HomeMy WebLinkAboutCT 13-03; ROBERTSON RANCH-RANCHO COSTERA; STORM WATER POLLUTION PREVENTION PLAN FOR RANCHO COSTERA; 2014-05-17FILE -COPY
Storm Water Pollution Prevention Plan
for
Rancho Costera
(Carl sbad Tract No. 13-03)
Risk Level 2 /
Legally Responsible Person:
Peter Kim,P.E.
Toll Brothers, Inc.
725 W. Town & Country Road, Suite 200
Orange, CA. 92868
Project Site Location/Address:
North of El Camino Real between
Tamarack Avenue and Cannon Road
Carlsbad, CA 92010
SWPPP Prepared by:
ChININMORM
Civil Engineering Hydrology. Hydraulics . Se1n
P.O. Box 9496
Rancho Santa Fe, CA 92067
(858) 692-0760
SWPPP Preparation Date:
May 17, 2014
Estimated Project Dates:
Start of Construction: June 15, 2014
Completion of Construction:. January 15, 2015 (Rough Grading)
June 15, 2017 (Final Construction)
TABLE OF CONTENTS
SECTION 1: SWPPP Requirements
1.1 Introduction
1.2 Permit Registration Documents
1.3 SWPPP Availability and Implementation
1.4 SWPPP Amendments
1.5 Retention of Records
1.6 Required Non-Compliance Reporting
1.7 Annual Report
1.8 Changes to Permit Coverage
1.9 Notice of Termination
SECTION 2: Project Information
2.1 Project and Site Description
2.2 Stormwater Run-On From Off-site Areas
2.3 Findings of the Construction Site Sediment and Receiving Water Risk Determination
2.4 Construction Schedule
2.5 Potential Construction Site Pollutant Sources
2.6 Identification of Non-Stormwater Discharges
SECTION 3: Best Management Practices
3.1 Schedule for BMP Implementation
3.2 Erosion Control and Sediment Control
3.3 Non-Stormwater and Materials Management
3.4 Post-Construction Stormwater Management Measures
3.5 Good Site Management "Housekeeping"
SECTION 4: BMP Inspection, Maintenance, and Rain Event Action Plans
4.1 BMP Inspection and Maintenance
4.2 Rain Event Action Plans
SECTION 5: Training
SECTION 6 Responsible Parties and Operators
6.1 Responsible Parties
6.2 Contractor List
SECTION 7 Construction Site Monitoring Program
7.1 Purpose
7.2 Applicability of Permit Requirements/Objectives
7.3 Monitoring Locations
7.4 Safety
7.5 Visual Monitoring (Inspections)
7.6 Water Quality Sampling and Analysis
7.7 Storm Water Discharge Water Quality Sampling Locations
7.8 Visual Observation and Sample Collection Exemptions
7.9 Storm Water Sample Collection and Handling Instructions
7.10 Monitoring Methods
7.11 Risk Level 2— Analytical Methods
7.12 Risk Level 2 - Non-Storm Water Discharge Monitoring Requirements
7.13 Risk Level 2— Non-Visible Pollutant Monitoring Requirements
7.14 Risk Level 2— Watershed Monitoring Option
7.15 Risk Level 2 - Particle Size Analysis for Project Risk Justification
7.16 Risk Level 2 - Records
7.17 Risk Level 2 - NAL Exceedance Report
APPENDIX A CONSTRUCTION GENERAL PERMIT
APPENDIX B SUBMITTED PERMIT REGISTRATION DOCUMENTS: NOL
Risk Level Assessment (Construction Site Sediment and Receiving Water
Risk Determination). Site Map (including vicinity map); Signed Certification
Statement.
APPENDIX C SWPPP AMENDMENT LOG
APPENDIX D NAL EXCEEDANCE SITE EVALUATIONS
APPENDIX E SUBMITTED CHANGES TO PRDs (DUE TO CHANGE IN
OWNERSHIP OR ACREAGE)
APPENDIX F CONSTRUCTION SCHEDULE
APPENDIX G SPILL RESPONSE ACTIONS
APPENDIX H CASQA BMP HANDBOOK FACT SHEETS
APPENDIX I CONSTRUCTION SITE INSPECTION REPORT FORMS
APPENDIX J RAIN EVENT ACTION PLAN (FORMS AND COMPLETED PLANS)
APPENDIX K TRAINING REPORTING FORM
APPENDIX L RESPONSIBLE PARTIES
APPENDIX M CONTRACTORS AND SUBCONTRACTORS
MAP POCKET CONSTRUCTION BMP EXHIBIT
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SECTION 1: SWPPP Requirements
1.1 Introduction
This project is being developed by Toll Brothers, Inc. and is located on the north side of El
Camino Real between Tamarack Avenue and Cannon Road in the city of Carlsbad (see Vicinity
Map in Appendix B). This Storm Water Pollution Prevention Plan (SWPPP) has been prepared
to comply with the National Pollutant Discharge Elimination System (NPDES) General Permit
for Storm Water Discharges Associated with Construction and Land Disturbance Activities
(General Permit), which is the State Water Resources Control Board's (SWRCB) Order No.
2009-0009-DWQ. A copy of the General Permit is included in Appendix A.
The major objectives of this SWPPP are:
All pollutants and their sources, including sources of sediment associated with
construction, construction site erosion and all other activities associated with
construction activity are controlled.
Where not otherwise required to be under a Regional Water Quality Control Board
(RWQCB) permit, all non-stormwater discharges are identified and either eliminated,
controlled, or treated.
Site best management practices (BMPs) are effective and result in the reduction or
elimination of pollutants in stormwater discharges and authorized non-stormwater
discharges from construction activity to the Best Available Technology/Best Control
Technology (BATIBCT) standard.
Calculations and design details as well as BUT controls for site run-on are complete
and correct.
Stabilization BMPs are installed to reduce or eliminate pollutants after construction is
completed.
Identify post-construction BMPs, which are those measures to be installed during
construction that are intended to reduce or eliminate pollutants after construction is
completed.
Identify and provide methods to implement BMP inspection, visual monitoring, Rain
Event Action Plan (REAP) and Construction Site Monitoring Program (CSMP)
requirements to comply with the General Permit
1.2 Permit Registration Documents
To obtain coverage under the Construction General Permit, Permit Registration Documents
(PRDs) must be submitted to the SWRCB via the Storm Water Multi-Application Reporting and
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Tracking System (SMARTS) by the Legally Responsible Person (LRP)(General Permit Sections
I.D.36, ll.B and Attachment B) assigned by the developer/owner. The PRDs include:
PRD Item
Date uploaded to the SWRCB
SMARTs System (to be completed by LRP)
Notice of Intent
Risk Assessment (Construction Site
Sediment and Receiving Water Risk
Determination)
Site Map
SWPPP
Annual Fee
Signed Certification Statement
General Permit Section ll.B.5 requires documentation of a valid WDJD upon demand. Copies of
the PRDs, including a valid WDID, shall be included in Appendix B by the LRP.
1.3 SWPPP Availability and Implementation
The General Permit (Section XIV.C) requires the SWPPP be available at the construction site
during working hours while construction is occurring and upon request by a State or Municipal
inspector. When the original SWPPP is retained by a crew member in a construction vehicle and
is not currently at the construction site, current copies of the BMPs and map/drawing will be left
with the field crew and the original SWPPP shall be made available via a request by
radio/telephone. The SWPPP shall be implemented concurrently with the start of ground
disturbing activities.
1.4 SWPPP Amendments
The General Permit requires that this SWPPP be amended or revised by a Qualified SWPPP
Developer (QSD)(Section Vll.B and XIV.A) and that the SWPPP include a listing of the date of
initial preparation and the date of each amendment. Amendments must be signed by a QSD
(Section Vll.B.6). It is recommended that all amendments be dated, directly attached to the
SWPPP, and logged in Appendix C.
1.5 Retention of Records
The General Permit (Sections I.J.6 and PIG) requires that all dischargers maintain a paper or
electronic copy of all required records for three years from the date generated or date submitted,
whichever is last. These records must be available at the construction site until construction is
completed. The discharger shall furnish the Regional Water Quality Control Board (RWQCB),
SWRCB, or US Environmental Protection Agency (USEPA) within a reasonable time, any
requested information to determine compliance with this General Permit. After construction is
complete this SWPPP will be retained at the developer's (Toll Brothers, Inc.) offices.
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1.6 Required Non-Compliance Reporting
The General Permit identifies several areas of non-compliance reporting. It is the responsibility
of the permittee to properly document reportable discharges or other violations of the General
Permit. Exceedances and violations should be reported using the SMARTS system. Risk Level 2
dischargers shall comply with the narrative effluent standards listed below:
Numeric Action Level (NAL) exceedances (NAL Exceedance Report upon request of the
RWQCB).
Self-reporting of discharge violations or to comply with RWQCB enforcement actions.
Storm water discharges and authorized non-storm water discharges regulated by this
General Permit shall not contain a hazardous substance equal to or in excess of reportable
quantities established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit
has been issued to regulate those discharges.
Dischargers shall minimize or prevent pollutants in storm water discharges and
authorized non-storm water discharges through the use of controls, structures, and
management practices that achieve Best Available Technology Economically Achievable
(BAT) for toxic and non-conventional pollutants and Best Conventional Pollutant Control
Technology (BCT) for conventional pollutants.
Risk Level 2 dischargers are subject to a pH Numeric Action Level of 6.5-8.5, and a turbidity
NAL of 250 Nephelometric Turbidity Units (Nit).
1.7 Annual Report
The General Construction Permit requires that all permittees prepare, certify, and
electronically submit an Annual Report through SMARTS no later than September 1 of each
year. Reporting requirements are identified in Section XVI of the General Permit and include
(but are not limited to) providing a summary of:
Sampling and analysis results including, if appropriate, laboratory reports, analytical
methods and reporting limits and chain of custody forms;
Corrective actions and compliance activities, including those not implemented;
Violations of the General Permit (if applicable);
Date, time, place, and name(s) of the inspector(s) for all sampling, inspections, and
field measurement activities;
Visual observation and sample collection exception records; and
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6) Training documentation of all personnel responsible for General Permit compliance
activities.
1.8 Changes to Permit Coverage
The General Permit (Section ll.C) allows a permittee to reduce or increase the total acreage
covered under the General Permit when a portion of the project is complete and/or conditions for
termination of coverage have been met; when ownership of a portion of the project is sold to a
different entity; or when new acreage is added to the project.
To change the acreage covered, the permittee must electronically file modifications to the PRDs
(revised NOI, site map, SWPPP revisions as appropriate, and certification that new landowners
have been notified of applicable requirements to obtain permit coverage (including name,
address, phone number, and email of new landowner) in accordance with the requirements of the
General Permit within 30 days of a reduction or increase in the total disturbed area. Include any
updates to PRDs submitted via SMARTS in Appendix E. Document any related SWPPP
revisions/amendments (Section ll.C.2) in Appendix C. If the project acreage has increased,
dischargers shall mail payment of revised annual fees within 14 days of receiving the revised
annual fee notification.
The discharger shall continue coverage under the General Permit for any parcel that has not
achieved "Final Stabilization" as defined in Section ll.D.
When an LRP owns property with active General Permit coverage and the LRP sells the
property, or a parcel thereof, to another person, that person shall become an LRP with respect to
whatever parcel was sold. The existing LRP shall inform the new LRP of the General Permit's
requirements. In order for the new LRP to continue the construction activity on its parcel of
property, the new LRP, or the new LRP's approved signatory, must submit PRDs in accordance
with this General Permit's requirements.
1.9 Notice of Termination
To terminate coverage under the General Permit, a Notice of Termination (NOT) must be
submitted electronically via SMARTS. A final "site map" and photos are required to be
submitted with the NOT. Filing an NOT certifies that all General Permit requirements have been
met. The NOT is submitted when the construction project is complete and within 90 days of
meeting all General Permit requirements for termination and final stabilization (Section ll.D)
including:
The site will not pose any additional sediment discharge risk than it did prior to
construction activity.
There is no potential for construction-related storm water pollutants to be discharged
into site runoff.
Final stabilization has been reached.
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. Construction materials and wastes have been disposed of properly.
Compliance with the Post-Construction Standards in Section XIII of the General
Permit has been demonstrated.
Post-construction stormwater management measures are installed and a long-term
maintenance plan that is designed for a minimum of 5 years has been developed.
All construction-related equipment, materials, and any temporary BMPs no longer
needed are removed from the site.
The NOT must demonstrate through photos, Revised Universal Soil Loss Equation (RUSLE)
results, or results of testing and analysis that the project meets all of the requirements of Section
ll.D.1 of the General Permit by one of the following methods:
70% final cover method (no computational proof required); or
RUSLEIRUSLE2 method (computational proof required); or
Custom method (discharger demonstrates that site complies with final stabilization
requirement in Section ll.D.1.a of the General Permit)
SECTION 2: Project Information
2.1 Project and Site Description
The Rancho Costera site is currently undeveloped and supports agricultural uses. The proposed
site development varies by planning area (PA): PA 1 and 23A-C are designated as open space;
PA 2 is a community facility site; PA 3, 5, 6, 9 and 10 are single-family residential
developments; PA 4 is for community recreation, PA 7 and 8 are multi-family residential; and
PA 11 is designated village center/commercial.
Under pre-project conditions, storm runoff from the Rancho Costera site generally flows towards
the south and occurs as sheet flow over the natural ground or as surface flow within natural
drainage courses. The majority of this runoff is conveyed to an existing double 8-foot by 4-foot
reinforced concrete box culvert (RCB) under El Camino Real east of Kelly Drive or to an
existing 8-foot by 8-foot RCB under El Camino Real west of Cannon Road. Some of the runoff
will also flow onto El Camino Real where it will be collected by public storm drain systems
along with the roadway runoff. The runoff from all of these areas is ultimately conveyed to Agua
Hedionda Creek, which outlets into the Agua Hedionda Lagoon and then the Pacific Ocean.
Under post-project conditions, proposed storm drain systems will be constructed to serve Rancho
Costera and the existing El Camino Real storm drain system will be altered to accommodate the
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widening. However, the storm runoff will continue to be conveyed to Agua Hedionda
Creek/Lagoon and the Pacific Ocean.
The project is located within the Los Monos Hydrologic Subarea (904.31) of the Agua Hedionda
Watershed in the Carlsbad Hydrologic Unit in the San Diego Region. Under both existing and
proposed conditions, storm runoff is eventually conveyed to Agua Hedionda Creek, and then
continues westerly to Agua Hedionda Lagoon. The project site represents less than one percent
of the overall watershed.
According to the 2008 303(d) list of water quality limited segments requiring TMDLs approved
by the State Water Resources Control Board, Agua Hedionda Creek is impaired for
enterococcus, fecal coliform, manganese, phosphorus, selenium, sulfates, total dissolved solids,
total nitrogen as N, and toxicity.
2.2 Storm Water Run-On from Off-site Areas
Risk Level 2 dischargers shall effectively manage all run-on, all runoff within the site, and all runoff
that discharges off the site. Run-on from off-site shall be directed away from all disturbed areas or
shall collectively be in compliance with the effluent limitations in this General Permit.
The off-site runoff primarily occurs within drainage courses, so will not impact the majority of
the project area. Nonetheless, any grading that extends across the drainage courses shall be
properly protected.
2.3 Findings of the Construction Site Sediment and Receiving Water Risk Determination
A risk determination was performed to determine the proposed project risk level. A project's
overall risk is based on two elements: (1) project sediment risk (the relative amount of sediment
that can be discharged, given the project and location details), and (2) receiving water risk (the
risk sediment discharges pose to the receiving waters).
Project sediment risk is determined by multiplying the R, K, and LS factors from the Revised
Universal Soil Loss Equation (RUSLE) to obtain an estimate of project-related bare ground soil
loss expressed in tons/acre. The RUSLE equation is as follows:
A = (R)(}(xL5)(C)(p)
where, A = the rate of sheet and rill erosion, R = rainfall-runoff erosivity factor, K = soil
erodibility factor, LS = length-slope factor, C = cover factor (erosion controls), P = management
operations and support practices (sediment controls).
The C and P factors are given values of 1.0 to simulate bare ground conditions. The R factor
(120) was obtained from the procedure described in the EPA's March 2012 Storm'ivaier Phase II
Final Rule (see Appendix B) based on the construction schedule provided by the developer (see
next section). if the construction period varies from the schedule, the project sediment risk shall
be recalculated and the SWPPP shall be revised if the resulting risk level increases. The General
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grading completed after approximately 6 months (January 15, 2014). The final construction is
estimated to be complete two and a half years later or by approximately June 15, 2017.
2.5 Potential Construction Site Pollutant Sources
The following is a list of activities that may occur at the construction site. The list generally
presents activities taking place on-site, during the construction phase, that have the potential to
contribute sediment and other pollutants to either storm water or non-storm water discharges:
Activities
Concrete waste management
Construction of erosion control measures
Construction of structures
Demolition
Excavation
Fire hydrant and water main testing and flushing
Landscaping (including irrigation system construction)
Material delivery and storage
Painting
Paving (asphalt and concrete)
Portable sanitary and septic waste management.
Sandblast grit management
Solid and hazardous waste management (including disposal)
Street sweeping and cleaning
Utility installation (including gas, electric, domestic water, reclaimed water, cable,
storm drain, telephone and related communication lines, and sanitary sewer)
Vehicle and construction equipment storage, cleaning, maintenance, fueling, and
stored fuel management
The following is a list of materials that may be located at the construction site. The list generally
represents construction materials, other than sediment, that have a potential to contribute
pollutants to either storm water or non-storm water discharges.
Materials
Acids
Adhesives
Air conditioning condensate
Aluminum building and drainage materials
Antifreeze
Asphalt paving materials and solvents
Chalk (landscaping)
Chlorine
Cleaning solutions and detergents
Concrete and concrete slurry
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Construction debris (including scrap flooring, carpeting, metals, rubber, plastic,
glass, wood, and masonry)
Curing compounds
Domestic wastes, food containers, and cigarettes
Equipment parts and fluids (including hydraulic fluid and batteries)
Fertilizers and mulch
Green waste (e.g., scrap tree trimmings and landscaping wastes)
Herbicides and pesticides
Lime and gypsum (landscaping)
Masonry products
Natural earthen materials (including sand, gravel, and topsoil)
Non-contact cooling water
Packaging materials
Paints and solvents
Petroleum products
Plaster and other products (included with concrete products)
Portable toilet waste
Roofing materials
.. Steel products
The following is a list of equipment and vehicles that may operate at the construction site. The
list generally represents equipment and vehicles that have a potential to contribute pollutants to
either storm water or non-storm water discharges.
EguiDment and Vehicles
Asphalt paving equipment
Concrete trucks
Cranes
Delivery and materials trucks
Earth moving equipment (including bulldozers, scrapers, and compactors)
Personal vehicles
Street cleaning trucks (including sweepers)
Street striping equipment
Water trucks
Welding equipment
2.6 Identification of Non-Stormwater Discharges
The following is a list of non-stormwater discharges that could occur at the site. The General
Permit (Section XJV.A.2) requires that dischargers identify all non-stormwater discharges and
that discharges be eliminated, controlled, or treated.
Non-Storm Water Discharges and Activities
Vehicle and equipment cleaning, fueling, and maintenance
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Surface water diversions
Dewatering
Sawcutting
Drilling
Boring
Asphalt and concrete grinding and recycling
Concrete mixing
Crushing
Painting
Mortar mixing
Air-blown mortar
Irrigation runoff
Water line and hydrant flushing
SECTION 3: Best Management Practices
3.1 Schedule for BMP Implementation
The General Permit requires compliance on a year-round basis not just during the rainy season,
which is traditionally defined in California to be October 1 through April 1. BMPs must be
implemented in a pro-active manner during all seasons while construction is occurring.
During the rainy season, an effective combination of erosion and sediment control BMPs must
be implemented on all disturbed areas. At a minimum, during the non-rainy season, the
discharger is responsible for ensuring that adequate erosion and sediment control measures are
available to be put in place in the event of a predicted storm.
Special attention should be given to larger areas of soil disturbance. The contractor should keep
the disturbance area as small as possible in order to implement erosion control as a first resort
and sediment control as a last resort.
In addition, the contractor shall implement a schedule for all BUT maintenance and
implementation. This schedule is usually associated with the construction schedule, which is
located in Appendix F.
3.2 Erosion Control and Sediment Control
Risk Level 2 dischargers shall implement effective wind erosion control.
Risk Level 2 dischargers shall provide effective soil cover for inactive areas and all finished
slopes, open space, utility backfill, and completed lots. Inactive areas of construction are
areas of construction activity that have been disturbed and are not scheduled to be re-
disturbed for at least 14 days.
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Risk Level 2 dischargers shall limit the use of plastic materials when more sustainable,
environmentally friendly alternatives exist. Where plastic materials are deemed necessary,
the discharger shall consider the use of plastic materials resistant to solar degradation.
Risk Level 2 dischargers shall establish and maintain effective perimeter controls and
stabilize all construction entrances and exits to sufficiently control erosion and sediment
discharges from the site.
On sites where sediment basins are to be used, Risk Level 2 dischargers shall, at minimum,
design sediment basins according to the method provided in CASQA's Construction BMP
Guidance Handbook. The LRP should contact the QSP for basin sizing, if it is decided to
implement basins during the course of construction.
Risk Level 2 dischargers shall implement appropriate erosion control BMPs (runoff control
and soil stabilization) in conjunction with sediment control BMPs for areas under active
construction. Active areas of construction are areas undergoing land surface disturbance.
This includes construction activity during the preliminary stage, mass grading stage, streets
and utilities stage, and the vertical construction stage.
Risk Level 2 dischargers shall apply linear sediment controls along the toe of the slope, face
of the slope, and at the grade breaks of exposed slopes to comply with sheet flow lengths in
accordance with the following table (sheet flow length is the length that shallow, low
velocity flow travels across a site):
Slope
Percentage
Sheet Flow Length
Not to Exceed
0-25% 20 feet
25-50% 15 feet
11 >50% 10 feet
Critical Slope/Sheet Flow Length Combinations
Risk Level 2 dischargers shall ensure that construction activity traffic to and from the project
is limited to entrances and exits that employ effective controls to prevent offsite tracking of
sediment.
Risk Level 2 dischargers shall ensure that all storm drain inlets and perimeter controls, runoff
control BMPs, and pollutant controls at entrances and exits (e.g., tire washoff locations) are
maintained and protected from activities that reduce their effectiveness.
Risk Level 2 dischargers shall inspect on a daily basis all immediate access roads. At a
minimum daily (when necessary) and prior to any rain event, the discharger shall remove any
sediment or other construction activity-related materials that are deposited on the roads (by
vacuuming or sweeping).
The following table lists specific Erosion and Sediment Control BMPs available to be used by
the contractor to reduce the likelihood of on-site erosion and of introducing sediment to the
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storm drain system. The BMPs are provided in a "fact sheet" format and are taken from the
California Stormwaler Best Management Handbook, Construction. Copies of the BMP fact
sheets are attached in Appendix Ii
The Construction BMPs Exhibit in the map pocket shall be used to show specific BMPs for the
site. The contractor shall make a laminated copy of the exhibit and keep it posted in the
construction trailer. The contractor/QSP shall show the stabilized construction entrances, gravel
bag inlet protection, gravel bag check dams, silt fencing, and fiber rolls. The exhibit shall be
updated on a weekly basis, or more frequently, if needed. The fact sheets provide details on the
erosion and sediment control BMPs that the contractor shall implement, as needed.
Erosion and Sediment Control BMPs
Temporary Sediment Control APPLICABLE BMP
Silt Fence SE-i
Sediment Trap SE-3
Check Dams SE-4
Fiber Rolls SE-5
Gravel Bag Berm SE-6
Street Sweeping and Vacuuming SE-7
Sandbag Barrier SE-8
Storm Drain Inlet Protection SE-10
Wind Erosion Control
Wind Erosion Control WE-I
Tracking Control
Stabilized Construction Entrance/Exit TC-1
Entrance/Outlet Tire Wash TC-3
3.3 Non-Stormwater and Materials Management
Risk Level 2 dischargers shall implement measures to control all non-storm water discharges
during construction.
Risk Level 2 dischargers shall wash vehicles in such a manner as to prevent non-storm water
discharges to surface waters or MS4 drainage systems.
Risk Level 2 dischargers shall clean streets in such a manner as to prevent unauthorized non-
storm water discharges from reaching surface water or MS4 drainage systems.
The following table lists specific construction-related activities that can occur at the construction
site and the applicable BMPs that are to be followed by the contractor to reduce the likelihood of
introducing non-stormwater related pollutants to the storm drain system. The BMPs are provided
in a "fact sheet" format and are taken from the California Stormwater Best Management
Handbook, Construction. Copies of the applicable BMPs and fact sheets are attached in
Appendix H.
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The contractor shall identify specific management areas (e.g., material storage, concrete wash-
out, fueling, etc.) in the field once construction starts. These areas may be relocated as
construction progresses, but they must be clearly identified to the appropriate contractors, and
BMPs must be used to prevent pollutants from leaving the areas. The areas shall be identified on
the laminated Construction BMPs Exhibit by the contractor/QSP.
Contractor Activity BMPs
Nóii.Stàrñitêr Mànigement Applicable BMP
Water Conservation Practices NS-1
Paving and Grinding Operations NS-3
Illicit Connection/Illegal Discharge Detection and Reporting NS-6
Potable Water/Irrigation NS-7
Vehicle and Equipment Cleaning NS-8
Vehicle and Equipment Fueling NS-9
Vehicle and Equipment Maintenance NS-10
Concrete Curing NS-12
Concrete Finishing NS-13
WièMiiièméntañd.Májerials Pollution Control
Material Delivery and Storage WM-1
Material Use WM-2
Stockpile Management WM-3
Spill Prevention and Control WM-4
Solid Waste Management WM-5
Hazardous Waste Management WM-6
Contaminated Soil Management WM-7
Concrete Waste Management WM-8
Sanitary/Septic Waste Management WM-9
Note: BMPs anticipated to be used during construction are in bold.
3.4 Post-Construction Stormwater Management Measures
The project is subject to the City of Carlsbad's January 14, 2011, Standard Urban Storm Water
Management Plan (SUSMP). The SUSMP mandates low impact development and
hydromodification measures that must be implemented for post-construction water quality
treatment. Bioretention basins and flow-through planters are being used to meet the SUSMP
treatment control and hydromodification requirements. The project will also include inlet
stenciling, roof drains to landscaping, and an efficient landscape and irrigation system design.
3.5 Good Site Management "Housekeeping"
Risk Level 2 dischargers shall implement good site management (i.e., "housekeeping")
measures for construction materials that could potentially be a threat to water quality if
discharged. At a minimum, Risk Level 2 dischargers shall implement the following good
housekeeping measures:
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Conduct an inventory of the products used and/or expected to be used and the end
products that are produced and/or expected to be produced. This does not include
materials and equipment that are designed to be outdoors and exposed to environmental
conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.). See
Section 2.5 for a list of potential pollutant sources.
Cover and berm loose stockpiled construction materials that are not actively being used
(i.e. soil, spoils, aggregate, fly-ash, stucco, hydrated lime, etc.).
Store chemicals in watertight containers (with appropriate secondary containment to
prevent any spillage or leakage) or in a storage shed (completely enclosed).
Minimize exposure of construction materials to precipitation. This does not include
materials and equipment that are designed to be outdoors and exposed to environmental
conditions (i.e. poles, equipment pads, cabinets, conductors, insulators, bricks, etc.).
Implement BMPs to prevent the off-site tracking of loose construction and landscape
materials.
2. Risk Level 2 dischargers shall implement good housekeeping measures for waste
management, which, at a minimum, shall consist of the following:
Prevent disposal of any rinse or wash waters or materials on impervious or pervious site
surfaces or into the storm drain system.
Ensure the containment of sanitation facilities (e.g., portable toilets) to prevent discharges
of pollutants to the storm water drainage system or receiving water.
Clean or replace sanitation facilities and inspect them regularly for leaks and spills.
Cover waste disposal containers at the end of every business day and during a rain event.
Prevent discharges from waste disposal containers to the storm water drainage system or
receiving water.
Contain and securely protect stockpiled waste material from wind and rain at all times
unless actively being used.
Implement procedures that effectively address hazardous and nonhazardous spills.
Develop a spill response and implementation element of the SWPPP prior to
commencement of construction activities (see the WM-4 Fact Sheet in Appendix H and
the Spill Response Actions in Appendix G for this element). This shall require that:
Equipment and materials for cleanup of spills shall be available on site and that spills
and leaks shall be cleaned up immediately and disposed of properly; and
ii. Appropriate spill response personnel are assigned and trained.
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i. Ensure the containment of concrete washout areas and other washout areas that may
contain additional pollutants so there is no discharge into the underlying soil and onto the
surrounding areas.
3. Risk Level 2 dischargers shall implement good housekeeping for vehicle storage and
maintenance, which, at a minimum, shall consist of the following:
Prevent oil, grease, or fuel to leak into the ground, to storm drains, or to surface waters.
Oil, grease, orfuel storage shall have secondary containment.
Place all equipment or vehicles, which are to be fueled, maintained and stored in a
designated area fitted with appropriate BMPs.
Clean leaks immediately and dispose of leaked materials properly.
4. Risk Level 2 dischargers shall implement good housekeeping for landscape materials,
which, at a minimum, shall consist of the following:
Contain stockpiled materials such as mulches and topsoil when they are not actively
being used.
Contain fertilizers and other landscape materials when they are not actively being used.
Discontinue the application of any erodible landscape material within 2 days before a
forecasted rain event or during periods of precipitation.
Apply erodible landscape material at quantities and application rates according to
manufacture recommendations or based on written specifications by knowledgeable and
experienced field personnel.
Stack erodible landscape material on pallets and covering or storing such materials when
not being used or applied.
5. Risk Level 2 dischargers shall conduct an assessment and create a list of potential pollutant
sources and identify any areas of the site where additional BMPs are necessary to reduce or
prevent pollutants in storm water discharges and authorized non-storm water discharges.
This potential pollutant list shall be kept with the SWPPP and shall identify all non-visible
pollutants which are known, or should be known, to occur on the construction site. At a
minimum, when developing BMPs, Risk Level 2 dischargers shall do the following:
Consider the quantity, physical characteristics (e.g., liquid, powder, solid), and locations
of each potential pollutant source handled, produced, stored, recycled, or disposed of at
the site.
Consider the degree to which pollutants associated with those materials may be exposed
to and mobilized by contact with storm water.
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Consider the direct and indirect pathways that pollutants may be exposed to storm water
or authorized non-storm water discharges. This shall include an assessment of past spills
or leaks, non-storm water discharges, and discharges from adjoining areas.
Ensure retention of sampling, visual observation, and inspection records.
Ensure effectiveness of existing BMPs to reduce or prevent pollutants in storm water
discharges and authorized non-storm water discharges.
See Section 2.5 for a list of potential pollutant sources. The contractor shall notify the
Qualified SWPPP Developer of additional sources to this SWPPP, as needed, based on
construction activities. Additional BIVIPs implemented by the contractor shall be added to the
SWPPP by the QSD.
Risk Level 2 dischargers shall implement good housekeeping measures on the construction
site to control the air deposition of site materials and from site operations. Such particulates
can include, but are not limited to, sediment, nutrients, trash, metals, bacteria, oil and grease
and organics.
Risk Level 2 dischargers shall document all housekeeping BMPs in the SWPPP and REAP(s)
in accordance with the nature and phase of the construction project. Construction phases at
traditional land development projects include Grading and Land Development Phase, Streets
and Utilities, or Vertical Construction for traditional land development projects.
SECTION 4: BMIP Inspection, Maintenance, and Rain
Event Action Plans
4.1 BMP Inspection and Maintenance
Risk Level 2 dischargers shall ensure that all inspection, maintenance repair and sampling
activities at the project location shall be performed or supervised by a Qualified SWPPP
Practitioner (QSP) representing the discharger. The QSP may delegate any or all of these
activities to an employee trained to do the task(s) appropriately, but shall ensure adequate
deployment.
2. Risk Level 2 dischargers shall perform weekly inspections and observations, and at least
once each 24-hour period during extended storm events, to identify and record BMPs that
need maintenance to operate effectively, that have failed, or that could fail to operate as
intended. Inspectors shall be the QSP or be trained by the QSP.
Upon identifying failures or other shortcomings, as directed by the QSP, Risk Level 2
dischargers shall begin implementing repairs or design changes to BMPs within 72 hours of
identifiëation and complete the changes as soon as possible.
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For each inspection required, Risk Level 2 dischargers shall complete an inspection
checklist, using the forms in Appendix I, a form provided by the State Water Board or
Regional Water Board, or an alternative format.
Risk Level 2 dischargers shall ensure that checklists shall remain on-site with the SWPPP
and at a minimum, shall include:
Inspection date and date the inspection report was written.
Weather information, including presence or absence of precipitation, estimate of
beginning of qualifying storm event, duration of event, time elapsed since last storm, and
approximate amount of rainfall in inches.
Site information, including stage of construction, activities completed, and approximate
area of the site exposed.
A description of any BMPs evaluated and any deficiencies noted.
If the construction site is safely accessible during inclement weather, list the observations
of all BMPs: erosion controls, sediment controls, chemical and waste controls, and non-
storm water controls. Otherwise, list the results of visual inspections at all relevant
outfalls, discharge points, downstream locations and any projected maintenance
activities.
Report the presence of noticeable odors or of any visible sheen on the surface of
discharges.
Any corrective actions required, including any necessary changes to the SWPPP and the
associated implementation dates.
Photographs taken during the inspection, if any.
Inspector's name, title, and signature.
4.2 Rain Event Action Plans (REAPs)
The discharger shall ensure a QSP develop a Rain Event Action Plan (REAP) 48 hours prior
to any likely precipitation event. A likely precipitation event is any weather pattern that is
forecast to have a 50% or greater probability of producing precipitation in the project area
The discharger shall ensure a QSP obtain a printed copy of precipitation forecast
information from the National Weather Service Forecast Office (e.g., by entering the zip
code of the project's location at http://www.srh.noaa.gov/forecast).
2. The discharger shall ensure a QSP develop the REAPs for all phases of construction (i.e.,
Grading and Land Development, Streets and Utilities, Vertical Construction, Final
Landscaping and Site Stabilization).
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3. The discharger shall ensure a QSP ensure that the REAP include, at a minimum, the
following site information:
Site Address
Calculated Risk Level (2 or 3)
Site Storm Water Manager Information including the name, company, and 24-hour
emergency telephone number
Erosion and Sediment Control Provider information including the name, company, and
24-hour emergency telephone number
Storm Water Sampling Agent information including the name, company, and 24-hour
emergency telephone number
4. The discharger shall ensure a QSP include in the REAP, at a minimum, the following
project phase information:
Activities associated with each construction phase
Trades active on the construction site during each construction phase
Trade contractor information
Suggested actions for each project phase
5. The discharger shall ensure a QSP develop additional REAPs for project sites where
construction activities are indefinitely halted or postponed (Inactive Construction). At a
minimum, Inactive Construction REAPs must include:
Site Address
Calculated Risk Level (2 or 3)
Site Storm Water Manager Information including the name, company, and 24-hour
emergency telephone number
Erosion and Sediment Control Provider information including the name, company, and
24-hour emergency telephone number
Storm Water Sampling Agent information including the name, company, and 24-hour
emergency telephone number
Trades active on site during Inactive Construction
Trade contractor information
Suggested actions for inactive construction sites
6. The discharger shall ensure a QSP begin implementation and make the REAP available on-
site no later than 24 hours prior to the likely precipitation event.
7. The discharger shall ensure a QSP maintain on-site a paper copy of each REAP in
compliance with the record retention requirements of the Special Provisions in this General
Permit.
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SECTION 5: Training
The General Permit (Section VII) requires that all elements of the SWPPP be developed by a
Qualified SWPPP Developer (QSD) and implemented by a Qualified SWPPP Practitioner (QSP).
The QSP may delegate tasks to trained employees provided adequate supervision and oversight
is given. Personnel at this site shall receive training appropriate for individual roles and
responsibilities on the project. Appropriate personnel shall receive training on SWPPP
implementation, BMP inspection and maintenance, and record keeping. All training activities
(formal and informal) shall be documented and records of training activities shall be retained in
this SWPPP Appendix K. Training documentation will also be submitted in the Annual Report.
The Responsible Parties listed in Appendix L will be responsible for training persons involved in
the installation, inspection, maintenance, and repair of BMPs. Training sessions should be held at
the commencement of construction and continue approximately every six weeks to the
completion of construction. The training will, at a minimum, include:
Discussion of the proper selection of pollution control measures.
Discussion of the proper installation and maintenance techniques.
Review of the SWPPP and established BUN.
SECTION 6: Responsible Parties and Operators
6.1 Responsible Parties
The General Permit requires (Section VII.B.4) that the name of any "Approved Signatory" be
listed in the SWPPP, and a copy of the written agreement or other mechanism that provides this
authority from the LRP be provided in the SWPPP.
A list of authorized representatives shall be provided by the LRP in Appendix L along with
project site personnel who will be responsible for SWPPP activities, including the QSD and
QSP. This list should include the names of the individuals granted authority to sign permit-
related document as well as a copy of the written agreement or other mechanism that provides
this authority from the LRP.
Include copies of the written authorizations for duly authorized representatives in Appendix L.
Appendix L should include the name and complete contact information (address, phone, email,
etc.) for each individual and their role on the project.
6.2 Contractor List
The General Permit (Section VII.B.5) requires that the SWPPP include a list of names of all
contractors, subcontractors, and individuals who will be directed by the QSP. The list is required
to include telephone numbers and work addresses and the specific areas of responsibility of each
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subcontractor and emergency contact numbers. See Appendix M for a list of contractors and
subcontractors.
SECTION 7: Construction Site Monitoring Program
7.1 Purpose
The General Permit requires that a written site specific Construction Site Monitoring Program
(CSMP) be developed by each discharger prior to the commencement of construction activities,
and be revised as necessary to reflect project revisions and that the CSMP be included with the
SWPPP. The Construction Site Monitoring Program requirements are as follows:
Pursuant to Water Code Sections 13383 and 13267, all dischargers subject to the
General Permit shall develop and implement a written site-specific Construction Site
Monitoring Program (CSMP) in accordance with the requirements of this section. The
CSMP consists of all the monitoring procedures and instructions, location maps,
forms, and checklists in this section. The CSMP shall be revised as necessary to
reflect project revisions.
Existing dischargers registered under the State Water Board Order No. 99-08-DWQ
shall make and implement necessary revisions to their Monitoring Program to reflect
the changes in the General Permit in a timely manner, but no later than July 1, 2010.
Existing dischargers shall continue to implement their existing Monitoring Programs
in compliance with State Water Board Order No. 99-08DWQ until the necessary
revisions are completed according to the schedule above.
When a change of ownership occurs for all or any portion of the construction site
prior to completion or final stabilization, the new discharger shall comply with these
requirements as of the date the ownership change occurs.
Visual Inspections Sample Collection
Quarterly Non- Pre- Pre- Daily Storm
Risk Storm Water Storm Storm Storm Post- Water Receiving
Level Discharge Baseline REAP BMP Storm Discharge Water
2 X X X X X X
Summary of Monitoring Requirements
7.2 Applicability of Permit Requirements/Objectives
The CSMP shall be developed and implemented to address the following objectives:
a. To demonstrate that the site is in compliance with the Discharge Prohibitions and
applicable Numeric Action Levels (NALs) of the General Permit;
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To determine whether non-visible pollutants are present at the construction site and
are causing or contributing to exceedances of water quality objectives;
To determine whether immediate corrective actions, additional BMP implementation,
or SWPPP revisions are necessary to reduce pollutants in storm water discharges and
authorized non-storm water discharges; and
To determine whether BMPs included in the SWPPP/Rain Event Action Plan (REAP)
are effective in preventing or reducing pollutants in storm water discharges and
authorized non-storm water discharges.
7.3 Monitoring Locations
Risk Level 2 dischargers shall include a description of the visual observation locations, visual
observation procedures, and visual observation follow-up and tracking procedures in the CSMP
(see sections below for details). The forms in Appendix I shall be used to record the monitoring
data-
7.4 Safety
Risk Level 2 dischargers shall be prepared to conduct visual observation (inspections) until the
minimum requirements in the next section are complete. Risk Level 2 dischargers are not
required to conduct visual observation (inspections) under the following conditions:
a During dangerous weather conditions such as flooding and electrical storms.
b. Outside of scheduled site business hours.
If no required visual observations (inspections) are collected due to these exceptions, Risk Level
2 dischargers shall include an explanation in this SWPPP and in the Annual Report documenting
why the visual observations (inspections) were not conducted.
7.5 Visual Monitoring (Inspections)
The following are the visual monitoring (inspection) requirements for qualifying rain events (see
Appendix I for forms):
a Risk Level 2 dischargers shall visually observe (inspect) storm water discharges at all
discharge locations within two business days (48 hours) after each qualifying rain
event.
b. Risk Level 2 dischargers shall visually observe (inspect) the discharge of stored or
contained storm water that is derived from and discharged subsequent to a qualifying
rain event producing precipitation of V2 inch or more at the time of discharge. Stored
or contained storm water that will likely discharge after operating hours due to
anticipated precipitation shall be observed prior to the discharge during operating
hours.
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c. Risk Level 2 dischargers shall conduct visual observations (inspections) during
business hours only.
d. Risk Level 2 dischargers shall record the time, date, and rain gauge reading of all
qualifying rain events.
e. Within 2 business days (48 hours) prior to each qualifying rain event, Risk Level 2
dischargers shall visually observe (inspect):
1. All storm water drainage areas to identify any spills, leaks, or uncontrolled
pollutant sources. If needed, the discharger shall implement appropriate corrective
actions.
All BMPs to identify whether they have been properly implemented in
accordance with the SWPPP. if needed, the discharger shall implement
appropriate corrective actions.
Any storm water storage and containment areas to detect leaks and ensure
maintenance of adequate freeboard.
f. For the visual observations (inspections) described in e.i and e.iii above, Risk Level 2
dischargers shall observe the presence or absence of floating and suspended materials,
a sheen on the surface, discolorations, turbidity, odors, and source(s) of any observed
pollutants.
g. Within two business days (48 hours) after each qualifying rain event, Risk Level 2
dischargers shall conduct post rain event visual observations (inspections) to (1)
identify whether BMPs were adequately designed, implemented, and effective, and
(2) identify additional BMPs and revise the SWPPP accordingly.
h. Risk Level 2 dischargers shall maintain on-site records of all visual observations
(inspections), personnel performing the observations, observation dates, weather
conditions, locations observed, and corrective actions taken in response to the
observations.
7.6 Water Quality Sampling and Analysis
Risk Level 2 dischargers shall collect storm water grab samples from sampling locations, as
defined in Section 7.7. The storm water grab sample(s) obtained shall be representative of the
flow and characteristics of the discharge.
At minimum, Risk Level 2 dischargers shall collect 3 samples per day of the qualifying
event.
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Risk Level 2 dischargers shall ensure that the grab samples collected of stored or contained
storm water are from discharges subsequent to a qualifying rain event (producing
precipitation of 1/2 inch or more at the time of discharge).
Storm Water Effluent Monitoring Requirements
Risk Level 2 dischargers shall analyze their effluent samples for:
pH and turbidity.
Any additional parameters for which monitoring is required by the Regional Water
Board.
7.7 Storm Water Discharge Water Quality Sampling Locations
Effluent Sampling Locations
Risk Level 2 dischargers shall perform sampling and analysis of storm water discharges to
characterize discharges associated with construction activity from the entire project disturbed
area
Risk Level 2 dischargers shall collect effluent samples at all discharge points where storm
water is discharged off-site (the contractor/QSP shall use the exhibit in map pocket to
identify the locations as construction progresses).
Risk Level 2 dischargers shall ensure that storm water discharge collected and observed
represent the effluent in each drainage area based on visual observation of the water and
upstream conditions. For example, if there has been concrete work recently in an area, or
drywall scrap is exposed to the rain, a pH sample shall be taken of drainage from the relevant
work area Similarly, if sediment laden water is flowing through some parts of a silt fence,
samples shall be taken of the sediment-laden water even if most water flowing through the
fence is clear.
Risk Level 2 dischargers shall monitor and report site run-on from surrounding areas if there
is reason to believe run-on may contribute to an exceedance of Numeric Action Levels
(NALs) or Numeric Effluent Limitations (NELs).
Risk Level 2 dischargers who deploy an Active Treatment System (ATS) on their site, or a
portion on their site, shall collect ATS effluent samples and measurements from the
discharge pipe or another location representative of the nature of the discharge.
Risk Level 2 dischargers shall select analytical test methods from the list provided in the
table at the end of this section.
All storm water sample collection preservation and handling shall be conducted in
accordance with Section 7.9 Storm Water Sample Collection and Handling Instructions
below.
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7.8 Visual Observation and Sample Collection Exemptions
a. Risk Level 2 dischargers shall be prepared to collect samples and conduct visual observation
(inspections) until the minimum requirements of Sections 7.5 and 7.6 above are completed.
Risk Level 2 dischargers are not required to physically collect samples or conduct visual
observation (inspections) under the following conditions:
During dangerous weather conditions such as flooding and electrical storms.
Outside of scheduled site business hours.
b. If no required samples or visual observation (inspections) are collected due to these
exceptions, Risk Level 2 dischargers shall include an explanation in this SWPPP and in the
Annual Report documenting why the sampling or visual observation (inspections) were not
conducted.
7.9 Storm Water Sample Collection and Handling Instructions
Risk Level 2 dischargers shall retain records of all storm water monitoring information and
copies of all reports (including Annual Reports) for a period of at least three years. Risk Level 2
dischargers shall retain all records on-site while construction is ongoing. These records include:
Risk Level 2 dischargers shall refer to the Risk Level Test Methods table below for
test methods, detection limits, and reporting units.
Risk Level 2 dischargers shall ensure that testing laboratories will receive samples
within 48 hours of the physical sampling (unless otherwise required by the
laboratory), and shall use only the sample containers provided by the laboratory to
collect and store samples.
Risk Level 2 dischargers shall designate and train personnel to collect, maintain, and
ship samples in accordance with the Surface Water Ambient Monitoring Program's
(SWAMP) 2008 Quality Assurance Program Plan (QAPrP). Additional information
regarding SWAMP's QAPrP and QAMP can be found at:
hLtp://www.waterboards.ca.&ov/water issues/programs/swamp/
QAPrP:
hiip://www.waterboards.ca.gov/water issues/programs/swamp/docs/ggp2/swamp qa
pp_master090 108a.pdf.
QAMP:
hgp://www.waterboards.ca.-izo-v/-w--ater_issues/Drograms/swamD/pamp.shtml.
7.10 Monitoring Methods
a. Risk Level 2 dischargers shall include a description of the following items:
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Visual observation locations, visual observation procedures, and visual observation
follow-up and tracking procedures.
Sampling locations, and sample collection and handling procedures. This shall include
detailed procedures for sample collection, storage, preservation, and shipping to the
testing lab to assure that consistent quality control and quality assurance is maintained.
Dischargers shall attach to the monitoring program an example Chain of Custody form
used when handling and shipping samples.
Identification of the analytical methods and related method detection limits (if
applicable) for each parameter required in Section 7.6 above.
b. Risk Level 2 dischargers shall ensure that all sampling and sample preservation are in accordance
with the current edition of "Standard Methods for the Examination of Water and Wastewater"
(American Public Health Association). All monitoring instruments and equipment (including a
discharger's own field instruments for measuring pH and turbidity) should be calibrated and
maintained in accordance with manufacturers' specifications to ensure accurate measurements.
Risk Level 2 dischargers shall ensure that all laboratory analyses are conducted according to test
procedures under 40 CFR Part 136, unless other test procedures have been specified in this
General Permit or by the Regional Water Board. With the exception of field analysis conducted
by the discharger for turbidity and pH, all analyses should be sent to and conducted at a
laboratory certified for such analyses by the State Department of Health Services. Risk Level 2
dischargers shall conduct their own field analysis of pH and may conduct their own field analysis
of turbidity if the discharger has sufficient capability (qualified and trained employees, properly
calibrated and maintained field instruments, etc.) to adequately perform the field analysis.
7.11 Risk Level 2 - Analytical Methods
Risk Level 2 dischargers shall refer to the Risk Level 2 Test Methods table below for test
methods, detection limits, and reporting units.
pH: Risk Level 2 dischargers shall perform pH analysis on-site with a calibrated pH meter
or a pH test kit. Risk Level 2 dischargers shall record pH monitoring results on paper and
retain these records in accordance with Section 7.16, below.
Turbidity: Risk Level 2 dischargers shall perform turbidity analysis using a calibrated
turbidity meter (turbidimeter), either on-site or at an accredited lab. Acceptable test methods
include Standard Method 2130 or USEPA Method 180.1. The results will be recorded in the
site log book in Nephelometric Turbidity Units (NTU).
7.12 Risk Level 2 - Non-Storm Water Discharge Monitoring Requirements
a. Visual Monitoring Requirements:
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Risk Level 2 dischargers shall visually observe (inspect) each drainage area for the
presence of (or indications of prior) unauthorized and authorized non-storm water
discharges and their sources.
Risk Level 2 dischargers shall conduct one visual observation (inspection) quarterly in
each of the following periods: January-March, April-June, July-September, and October-
December. Visual observation (inspections) are only required during daylight hours
(sunrise to sunset).
Risk Level 2 dischargers shall ensure that visual observations (inspections) document the
presence or evidence of any non-storm water discharge (authorized or unauthorized),
pollutant characteristics (floating and suspended material, sheen, discoloration, turbidity,
odor, etc.), and source. Risk Level 2 dischargers shall maintain on-site records indicating
the personnel performing the visual observation (inspections), the dates and approximate
time each drainage area and non-storm water discharge was observed, and the response
taken to eliminate unauthorized non-storm water discharges and to reduce or prevent
pollutants from contacting non-storm water discharges.
b. Effluent Sampling Locations:
Risk Level 2 dischargers shall sample effluent at all discharge points where non-storm
water and/or authorized non-storm water is discharged off-site.
Risk Level 2 dischargers shall send all non-storm water sample analyses to a laboratory
certified for such analyses by the State Department of Health Services.
ill. Risk Level 2 dischargers shall monitor and report run-on from surrounding areas if there
is reason to believe run-on may contribute to an exceedance of NALs.
7.13 Risk Level 2— Non-Visible Pollutant Monitoring Requirements
Risk Level 2 dischargers shall collect one or more samples during any breach, malfunction,
leakage, or spill observed during a visual inspection which could result in the discharge of
pollutants to surface waters that would not be visually detectable in storm water.
Risk Level 2 dischargers shall ensure that water samples are large enough to characterize the
site conditions.
Risk Level 2 dischargers shall collect samples at all discharge locations that can be safely
accessed.
Risk Level 2 dischargers shall collect samples during the first two hours of discharge from
rain events that occur during business hours and which generate runoff.
Risk Level 2 dischargers shall analyze samples for all non-visible pollutant parameters (if
applicable) - parameters indicating the presence of pollutants identified in the pollutant
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source assessment required (Risk Level 2 dischargers shall modify their CSMPs to address
these additional parameters in accordance with any updated SWPPP pollutant source
assessment).
Risk Level 2 dischargers shall collect a sample of storm water that has not come in contact
with the disturbed soil or the materials stored or used on-site (uncontaminated sample) for
comparison with the discharge sample.
Risk Level 2 dischargers shall compare the uncontaminated sample to the samples of
discharge using field analysis or through laboratory analysis. For laboratory analysis, all
sampling, sample preservation, and analyses must be conducted according to test procedures
under 40 CFR Part 136. Field discharge samples shall be collected and analyzed according to the
specifications of the manufacturer of the sampling devices employed.
Risk Level 2 dischargers shall keep all field for analytical data in this SWPPP document.
7.14 Risk Level 2— Watershed Monitoring Option
Risk Level 2 dischargers who are part of a qualified regional watershed-based monitoring
program may be eligible for relief from the requirements in Section 7.7. The Regional Water
Board may approve proposals to substitute an acceptable watershed-based monitoring program
by determining if the watershed-based monitoring program will provide substantially similar
monitoring information in evaluating discharger compliance with the requirements of the
General Permit.
7.15 Risk Level 2— Particle Size Analysis for Project Risk Justification
Risk Level 2 dischargers justifying an alternative project risk shall report a soil particle size
analysis used to determine the RUSLE K-Factor. ASTM D-422 (Standard Test Method for
Particle-Size Analysis of Soils), as revised, shall be used to determine the percentages of sand,
very fine sand, silt, and clay on the site.
7.16 Risk Level 2— Records
Risk Level 2 dischargers shall retain records of all storm water monitoring information and
copies of all reports (including Annual Reports) for a period of at least three years. The forms in
Appendix I shall be used to record the monitoring data. Risk Level 2 dischargers shall retain all
records on-site while construction is ongoing. These records include:
a The date, place, time of facility inspections, sampling, visual observation
(inspections), and/or measurements, including precipitation.
The individual(s) who performed the facility inspections, sampling, visual
observation (inspections), and or measurements.
The date and approximate time of analyses.
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The individual(s) who performed the analyses.
A summary of all analytical results from the last three years, the, method detection
limits and reporting units, the analytical techniques or methods used, and the chain of
custody forms.
Rain gauge readings from site inspections;
Quality assurance/quality control records and results.
Non-storm water discharge inspections and visual observation (inspections) and
storm water discharge visual observation records (see Sections 7.5 and 7.12 above).
Visual observation and sample collection exception records (see Section 7.8 above).
J. The records of any corrective actions and follow-up activities that resulted from
analytical results, visual observation (inspections), or inspections.
7.17 Risk Level 2— NAL Exceedance Report
In the event that any effluent sample exceeds an applicable NAL, Risk Level 2 dischargers
shall electronically submit all storm event sampling results to the State Water Board no later
than 10 days after the conclusion of the storm event. The Regional Boards have the authority
to require the submittal of an NAL Exceedance Report (see Appendix D).
Risk Level 2 dischargers shall certify each NAL Exceedance Report in accordance with the
Special Provisions for Construction Activity.
Risk Level 2 dischargers shall retain an electronic or paper copy of each NAL Exceedance
Report for a minimum of three years after the date the annual report is filed.
Risk Level 2 dischargers shall include in the NAL Exceedance Report:
i. The analytical method(s), method reporting unit(s), and method detection limit(s) of each
analytical parameter (analytical results that are less than the method detection limit shall
be reported as "less than the method detection limit").
111. The date, place, time of sampling, visual observation (inspections), and/or measurements,
including precipitation.
iii. A description of the current BMPs associated with the effluent sample that exceeded
the NAL and the proposed corrective actions taken.
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Test Method! Discharge Mm. Detection Reporting Numeric Action
Parameter Protocol Type Limit Units Level
Field test with Risk Level 2
pH calibrated portable Discharges 0.2 pH Units Lower NAL = 6.5
equipment
Upper NAL = 8.5
Risk Level 2
Turbidity
0180.1 and/or field Discharges 1 NTU 250 NTU
EPA test with calibrated other than ATS
For ATS portable instrument
Discharges I 1NTU N/A
Risk Level 2 Test Methods, Detection Limits, Reporting Units and Applicable NALs/NELs
29
APPENDIX A
CONSTRUCTION GENERAL PERMIT
10
State Water Resources Control Board
Linda S. Adams
Secretaty for Division of Water Quality Arnold Schwarzenegger
Envirme,talP,rjection 1001 I Street• Sacramento, California 95814 . (916)341-5455
Mailing Address: P.O. Box 100. Sacramento, California • 95812-0100
Fax (916) 341-5463. http:/Iwww.waterboards.ca.gov
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)
GENERAL PERMIT FOR
STORM WATER DISCHARGES
ASSOCIATED WITH CONSTRUCTION AND LAND DISTURBANCE
ACTIVITIES
ORDER NO. 2009-0009-DWQ
NPDES NO. CAS000002
This Order was adopted by the State Water Resources Control
Board on: September 2, 2009
This Order shall become effective on: July 1, 2010
This Order shall expire on: September 2, 2014
IT IS HEREBY ORDERED, that this Order supersedes Order No. 99-08-DWQ
except for enforcement purposes. The Discharger shall comply with the
requirements in this Order to meet the provisions contained in Division 7 of the
California Water Code (commencing with section 13000) and regulations
adopted thereunder, and the provisions of the federal Clean Water Act and
regulations and guidelines adopted thereunder.
I, Jeanine Townsend, Clerk to the Board, do hereby certify that this Order with all
attachments is a full, true, and correct copy of an Order adopted by the State
Water Resources Control Board, on September 2, 2009.
AYE: Vice Chair Frances Spivy-Weber
Board Member Arthur G. Baggett, Jr.
Board Member Tam M. Doduc
NAY: Chairman Charles R. Hoppin
ABSENT: None
ABSTAIN: None
4eanmv-
Townsend
Clerk to the Board
TABLE OF CONTENTS
I. FINDINGS ...................................................................................................................................... i
IL CONDITIONS FOR PERMIT COVERAGE............................................................................14
DISCHARGE PROHIBITIONS.................................................................................................20
SPECIAL PROVISIONS.............................................................................................................22
EFFLUENT STANDARDS.........................................................................................................29
RECEIVING WATER LIMITATIONS....................................................................................32
VIL TRAINING QUALIFICATIONS AND CERTIFICATION REQUIREMENTS ................... 33
RISK DETERMINATION..........................................................................................................34
RISK LEVEL 1 REQUIREMENTS...........................................................................................35
RISK LEVEL 2 REQUIREMENTS...........................................................................................35
RISK LEVEL 3 REQUIREMENTS...........................................................................................35
ACTIVE TREATMENT SYSTEMS (ATS)...............................................................................35
Xffl. POST-CONSTRUCTION STANDARDS..................................................................................36
SWPPP REQUIREMENTS ........................................................................................................ 38
REGIONAL WATER BOARD AUTHORITIES......................................................................39
ANNUAL REPORTING REQUIREMENTS............................................................................40
LIST OF ATTACHMENTS
Attachment A - Linear Underground/Overhead Requirements
Attachment A.1 - LUP Type Determination
Attachment A.2 - LUP Permit Registration Documents
Attachment B - Permit Registration Documents
Attachment C - Risk Level I Requirements
Attachment 0— Risk Level 2 Requirements
Attachment E - Risk Level 3 Requirements
Attachment F - Active Treatment System (ATS) Requirements
LIST OF APPENDICES
Appendix I - Risk Determination Worksheet
Appendix 2— Post-Construction Water Balance Performance Standard
Appendix 2.1 - Post-Construction Water Balance Performance Standard Spreadsheet
Appendix 3 - Bioassessment Monitoring Guidelines
Appendix 4— Adopted/implemented Sediment TMDLS
Appendix 5— Glossary
Appendix 6— Acronyms
Appendix 7— State and Regional Water Resources Control Board Contacts
Order
STATE WATER RESOURCES CONTROL BOARD
ORDER NO. 2009-0009-DWQ
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
GENERAL PERMIT NO. CAS000002
WASTE DISCHARGE REQUIREMENTS
FOR
DISCHARGES OF STORM WATER RUNOFF ASSOCIATED WITH
CONSTRUCTION AND LAND DISTURBANCE ACTIVITIES
I. FINDINGS
A. General Findings
The State Water Resources Control Board (State Water Board) finds that:
The federal Clean Water Act (CWA) prohibits certain discharges of
storm water containing pollutants except in compliance with a National
Pollutant Discharge Elimination System (NPDES) permit (Title 33
United States Code (U.S.C.) §§ 1311 and 1342(p); also referred to as
Clean Water Act (CWA) §§ 301 and 402(p)). The U.S. Environmental
Protection Agency (U.S. EPA) promulgates federal regulations to
implement the CWA's mandate to control pollutants in storm water
runoff discharges. (Title 40 Code of Federal Regulations (C.F.R.)
Parts 122, 123, and 124). The federal statutes and regulations require
discharges to surface waters comprised of storm water associated with
construction activity, including demolition, clearing, grading, and
excavation, and other land disturbance activities (except operations
that result in disturbance of less than one acre of total land area and
which are not part of a larger common plan of development or sale), to
obtain coverage under an NPDES permit. The NPDES permit must
require implementation of Best Available Technology Economically
Achievable (BAT) and Best Conventional Pollutant Control Technology
(BCT) to reduce or eliminate pollutants in storm water runoff. The
NPDES permit must also include additional requirements necessary to
implement applicable water quality standards.
This General Permit authorizes discharges of storm water associated
with construction activity so long as the dischargers comply with all
requirements, provisions, limitations and prohibitions in the permit. In
addition, this General Permit regulates the discharges of storm water
associated with construction activities from all Linear
Underground/Overhead Projects resulting in the disturbance of greater
than or equal to one acre (Attachment A).
2009-0009-DWQ 1 September 02, 2009
Order
This General Permit regulates discharges of pollutants in storm water
associated with construction activity (storm water discharges) to waters
of the United States from construction sites that disturb one or more
acres of land surface, or that are part of a common plan of
development or sale that disturbs more than one acre of land surface.
This General Permit does not preempt or supersede the authority of
local storm water management agencies to prohibit, restrict, or control
storm water discharges to municipal separate storm sewer systems or
other watercourses within their jurisdictions.
This action to adopt a general NPDES permit is exempt from the
provisions of Chapter 3 of the California Environmental Quality Act
(CEQA) (Public Resources Code Section 21100, et seq.), pursuant to
Section 13389 of the California Water Code.
Pursuant to 40 C.F.R. § 131.12 and State Water Board Resolution No.
6816,1 which incorporates the requirements of § 131.12 where
applicable, the State Water Board finds that discharges in compliance
with this General Permit will not result in the lowering of water quality
standards, and are therefore consistent with those provisions.
Compliance with this General Permit will result in improvements in
water quality.
This General Permit serves as an NPDES permit in compliance with
CWA § 402 and will take effect on July 1, 2010 by the State Water
Board provided the Regional Administrator of the U.S. EPA has no
objection. If the U.S. EPA Regional Administrator objects to its
issuance, the General Permit will not become effective until such
objection is withdrawn.
Following adoption and upon the effective date of this General Permit,
the Regional Water Quality Control Boards (Regional Water Boards)
shall enforce the provisions herein.
Regional Water Boards establish water quality standards in Basin
Plans. The State Water Board establishes water quality standards in
various statewide plans, including the California Ocean Plan. U.S.
EPA establishes water quality standards in the National Toxic Rule
(NTR) and the California Toxic Rule (CTR).
1 Resolution No. 68-16 generally requires that existing water quality be maintained unless degradation is
justified based on specific findings.
2009-0009-DWQ 2 September 02, 2009
Order
This General Permit does not authorize discharges of fill or dredged
material regulated by the U.S. Army Corps of Engineers under CWA §
404 and does not constitute a waiver of water quality certification under
CWA401.
The primary storm water pollutant at construction sites is excess
sediment. Excess sediment can cloud the water, which reduces the
amount of sunlight reaching aquatic plants, clog fish gills, smother
aquatic habitat and spawning areas, and impede navigation in our
waterways. Sediment also transports other pollutants such as
nutrients, metals, and oils and greases.
Construction activities can impact a construction site's runoff sediment
supply and transport characteristics. These modifications, which can
occur both during and after the construction phase, are a significant
cause of degradation of the beneficial uses established for water
bodies in California. Dischargers can avoid these effects through
better construction site design and activity practices.
This General Permit recognizes four distinct phases of construction
activities. The phases are Grading and Land Development Phase,
Streets and Utilities Phase, Vertical Construction Phase, and Final
Landscaping and Site Stabilization Phase. Each phase has activities
that can result in different water quality effects from different water
quality pollutants. This General Permit also recognizes inactive
construction as a category of construction site type.
Compliance with any specific limits or requirements contained in this
General Permit does not constitute compliance with any other
applicable requirements.
Following public notice in accordance with State and Federal laws and
regulations, the State Water Board heard and considered all comments
and testimony in a public hearing on 06/03/2009. The State Water
Board has prepared written responses to all significant comments.
Construction activities obtaining coverage under the General Permit
may have multiple discharges subject to requirements that are specific
to general, linear, and/or active treatment system discharge types.
The State Water Board may reopen the permit if the U.S. EPA adopts
a final effluent limitation guideline for construction activities.
2009-0009-DWQ 3 September 02, 2009
Order
B. Activities Covered Under the General Permit
Any construction or demolition activity, including, but not limited to,
clearing, grading, grubbing, or excavation, or any other activity that
results in a land disturbance of equal to or greater than one acre.
Construction activity that results in land surface disturbances of less
than one acre if the construction activity is part of a larger common
plan of development or the sale of one or more acres of disturbed land
surface.
Construction activity related to residential, commercial, or industrial
development on lands currently used for agriculture including, but not
limited to, the construction of buildings related to agriculture that are
considered industrial pursuant to U.S. EPA regulations, such as dairy
barns or food processing facilities.
Construction activity associated with Linear Underground/Overhead
Utility Projects (LUPs) including, but not limited to, those activities
necessary for the installation of underground and overhead linear
facilities (e.g., conduits, substructures, pipelines, towers, poles, cables,
wires, connectors, switching, regulating and transforming equipment
and associated ancillary facilities) and include, but are not limited to,
underground utility mark-out, potholing, concrete and asphalt cutting
and removal, trenching, excavation, boring and drilling, access road
and pole/tower pad and cable/wire pull station, substation construction,
substructure installation, construction of tower footings and/or
foundations, pole and tower installations, pipeline installations,
welding, concrete and/or pavement repair or replacement, and
stockpile/borrow locations.
Discharges of sediment from construction activities associated with oil
and gas exploration, production, processing, or treatment operations or
transmission facilities.2
Storm water discharges from dredge spoil placement that occur
outside of U.S. Army Corps of Engineers jurisdiction (upland sites) and
that disturb one or more acres of land surface from construction activity
are covered by this General Permit. Construction sites that intend to
disturb one or more acres of land within the jurisdictional boundaries of
a CWA § 404 permit should contact the appropriate Regional Water
Board to determine whether this permit applies to the site.
2 Pursuant to the Ninth Circuit Court of Appeals' decision in NRDC v. EPA (9th Cir. 2008) 526 F.3d 591, and
subsequent denial of the U.S. EPA's petition for reconsideration in November 2008, oil and gas construction
activities discharging storm water contaminated only with sediment are no longer exempt from the NPDES
program.
2009-0009-DWQ 4 September 02, 2009
Order
C. Activities Not Covered Under the General Permit
Routine maintenance to maintain original line and grade, hydraulic
capacity, or original purpose of the facility.
Disturbances to land surfaces solely related to agricultural operations
such as disking, harrowing, terracing and leveling, and soil preparation.
Discharges of storm water from areas on tribal lands; construction on
tribal lands is regulated by a federal permit.
Construction activity and land disturbance involving discharges of
storm water within the Lake Tahoe Hydrologic Unit. The Lahontan
Regional Water Board has adopted its own permit to regulate storm
water discharges from construction activity in the Lake Tahoe
Hydrologic Unit (Regional Water Board 6SLT). Owners of construction
sites in this watershed must apply for the Lahontan Regional Water
Board permit rather than the statewide Construction General Permit.
Construction activity that disturbs less than one acre of land surface,
and that is not part of a larger common plan of development or the sale
of one or more acres of disturbed land surface.
Construction activity covered by an individual NPDES Permit for storm
water discharges.
Discharges from small (1 to 5 acre) construction activities with an
approved Rainfall Erosivity Waiver authorized by U.S. EPA Phase II
regulations certifying to the State Board that small construction activity
will occur only when the Rainfall Erosivity Factor is less than 5 ("R" in
the Revised Universal Soil Loss Equation).
Landfill construction activity that is subject to the Industrial General
Permit.
Construction activity that discharges to Combined Sewer Systems.
Conveyances that discharge storm water runoff combined with
municipal sewage.
Discharges of storm water identified in CWA § 402(/)(2), 33 U.S.C. §
1342(I)(2).
2009-0009-DWQ 5 September 02, 2009
Order
35. Discharges occurring in basins that are not tributary or hydrologically
connected to waters of the United States (for more information contact
your Regional Water Board).
D. Obtaining and Modifying General Permit Coverage
36. This General Permit requires all dischargers to electronically file all
Permit Registration Documents (PRDs), Notices of Termination (NOT),
changes of information, annual reporting, and other compliance
documents required by this General Permit through the State Water
Board's Storm water Multi-Application and Report Tracking System
(SMARTS) website.
37. Any information provided to the Regional Water Board shall comply
with the Homeland Security Act and any other federal law that
concerns security in the United States; any information that does not
comply should not be submitted.
38. This General Permit grants an exception from the Risk Determination
requirements for existing sites covered under Water Quality Orders No.
99-08-DV, and No. 2003-0007-DWQ. For certain sites, adding
additional requirements may not be cost effective. Construction sites
covered under Water Quality Order No. 99-08-DWQ shall obtain permit
coverage at the Risk Level 1. LUPs covered under Water Quality
Order No. 2003-0007-DWQ shall obtain permit coverage as a Type I
LUP. The Regional Water Boards have the authority to require Risk
Determination to be performed on sites currently covered under Water
Quality Orders No. 99-08-DWQ and No. 2003-0007-DWQ where they
deem it necessary. The State Water Board finds that there are two
circumstances when it may be appropriate for the Regional Water
Boards to require a discharger that had filed an NOI under State Water
Board Order No. 99-08-DWQ to recalculate the site's risk level. These
circumstances are: (I) when the discharger has a demonstrated
history of noncompliance with State Water Board Order No. 99-08-
DWQ or; (2) when the discharger's site poses a significant risk of
causing or contributing to an exceedance of a water quality standard
without the implementation of the additional Risk Level 2 or 3
requirements.
E. Prohibitions
39. All discharges are prohibited except for the storm water and non-storm
water discharges specifically authorized by this General Permit or
another NPDES permit. Non-storm water discharges include a wide
variety of sources, including improper dumping, spills, or leakage from
storage tanks or transfer areas. Non-storm water discharges may
2009-0009-DWQ 6 September 02, 2009
Order
contribute significant pollutant loads to receiving waters. Measures to
control spills, leakage, and dumping, and to prevent illicit connections
during construction must be addressed through structural as well as
non-structural Best Management Practices (BMPs)3. The State Water
Board recognizes, however, that certain non-storm water discharges
may be necessary for the completion of construction.
This General Permit prohibits all discharges which contain a
hazardous substance in excess of reportable quantities established in
40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has
been issued to regulate those discharges.
This General Permit incorporates discharge prohibitions contained in
water quality control plans, as implemented by the State Water Board
and the nine Regional Water Boards.
Pursuant to the Ocean Plan, discharges to Areas of Special Biological
Significance (ASBS) are prohibited unless covered by an exception
that the State Water Board has approved.
This General Permit prohibits the discharge of any debns4 from
construction sites. Plastic and other trash materials can cause
negative impacts to receiving water beneficial uses. The State Water
Board encourages the use of more environmentally safe,
biodegradable materials on construction sites to minimize the potential
risk to water quality.
F. Training
In order to improve compliance with and to maintain consistent
enforcement of this General Permit, all dischargers are required to
appoint two positions - the Qualified SWPPP Developer (QSD) and the
Qualified SWPPP Practitioner (QSP) - who must obtain appropriate
training. Together with the key stakeholders, the State and Regional
Water Boards are leading the development of this curriculum through a
collaborative organization called The Construction General Permit
(CGP) Training Team.
The Professional Engineers Act (Bus. & Prof. Code section 6700, et
seq.) requires that all engineering work must be performed by a
California licensed engineer.
BMPs are scheduling of activities, prohibitions of practices, maintenance procedures, and other
management practices to prevent or reduce the discharge of pollutants to waters of the United States. BMPs
also include treatment requirements, operating procedures, and practice to control site runoff, spillage or
leaks, sludge or waste disposal, or drainage from raw material storage.
Litter, rubble, discarded refuse, and remains of destroyed inorganic anthropogenic waste.
2009-0009-DWQ 7 September 02, 2009
Order
G. Determining and Reducing Risk
The risk of accelerated erosion and sedimentation from wind and water
depends on a number of factors, including proximity to receiving water
bodies, climate, topography, and soil type.
This General Permit requires dischargers to assess the risk level of a
site based on both sediment transport and receiving water risk. This
General Permit contains requirements for Risk Levels 1, 2 and 3, and
LUP Risk Type 1, 2, and 3 (Attachment A). Risk levels are established
by determining two factors: first, calculating the site's sediment risk;
and second, receiving water risk during periods of soil exposure (i.e.
grading and site stabilization). Both factors are used to determine the
site-specific Risk Level(s). LUPs can be determined to be Type I
based on the flowchart in Attachment A. 1.
Although this General Permit does not mandate specific setback
distances, dischargers are encouraged to set back their construction
activities from streams and wetlands whenever feasible to reduce the
risk of impacting water quality (e.g., natural stream stability and habitat
function). Because there is a reduced risk to receiving waters when
setbacks are used, this General Permit gives credit to setbacks in the
risk determination and post-construction storm water performance
standards. The risk calculation and runoff reduction mechanisms in
this General Permit are expected to facilitate compliance with any
Regional Water Board and local agency setback requirements, and to
encourage voluntary setbacks wherever practicable.
Rain events can occur at any time of the year in California. Therefore,
a Rain Event Action Plan (REAP) is necessary for Risk Level 2 and 3
traditional construction projects (LUPs exempt) to ensure that active
construction sites have adequate erosion and sediment controls
implemented prior to the onset of a storm event, even if construction is
planned only during the dry season.
Soil particles smaller than 0.02 millimeters (mm) (i.e., finer than
medium silt) do not settle easily using conventional measures for
sediment control (i.e., sediment basins). Given their long settling time,
dislodging these soils results in a significant risk that fine particles will
be released into surface waters and cause unacceptable downstream
impacts. If operated correctly, an Active Treatment System (ATS5) can
prevent or reduce the release of fine particles from construction sites.
An ATS is a treatment system that employs chemical coagulation, chemical flocculation, or electro
coagulation in order to reduce turbidity caused by fine suspended sediment.
2009-0009-DWQ 8 September 02, 2009
Order
Use of an ATS can effectively reduce a site's risk of impacting
receiving waters.
Dischargers located in a watershed area where a Total Maximum Daily
Load (TM DL) has been adopted or approved by the Regional Water
Board or U.S. EPA may be required by a separate Regional Water
Board action to implement additional BMPs, conduct additional
monitoring activities, and/or comply with an applicable waste load
allocation and implementation schedule. Such dischargers may also
be required to obtain an individual Regional Water Board permit
specific to the area.
H. Effluent Standards
The State Water Board convened a blue ribbon panel of storm water
experts that submitted a report entitled, "The Feasibility of Numeric
Effluent Limits Applicable to Discharges of Storm Water Associated
with Municipal, Industrial and Construction Activities," dated
June 19, 2006. The panel concluded that numeric limits or action
levels are technically feasible to control construction storm water
discharges, provided that certain conditions are considered. The panel
also concluded that numeric effluent limitations (NELs) are feasible for
discharges from construction sites that utilize an ATS. The State
Water Board has incorporated the expert panel's suggestions into this
General Permit, which includes both numeric action levels (NALs) and
NELs for pH and turbidity, and special numeric limits for ATS
discharges.
Numeric Effluent Limitations
Discharges of storm water from construction activities may become
contaminated from alkaline construction materials resulting in high pH
(greater than pH 7). Alkaline construction materials include, but are
not limited to, hydrated lime, concrete, mortar, cement kiln dust (CKD),
Portland cement treated base (CTB), fly ash, recycled concrete, and
masonry work. This General Permit includes an NEL for pH (6.0-9.0)
that applies only at sites that exhibit a "high risk of high pH discharge."
A "high risk of high pH discharge" can occur during the complete
utilities phase, the complete vertical build phase, and any portion of
any phase where significant amounts of materials are placed directly
on the land at the site in a manner that could result in significant
alterations to the background pH of any discharges.
For Risk Level 3 discharges, this General Permit establishes
technology-based, numeric effluent limitations (NELs) for turbidity of
500 NTU. Exceedances of the turbidity NEL constitutes a violation of
this General Permit.
2009-0009-DWQ 9 September 02, 2009
Order
55. This General Permit establishes a 5 year, 24 hour (expressed in inches
of rainfall) Compliance Storm Event exemption from the technology-
based NELs for Risk Level 3 dischargers.
Determining Compliance with Numeric Limitations
56. This General Permit sets a pH NAL of 6.5 to 8.5, and a turbidity NAL of
250 NTU. The purpose of the NAL and its associated monitoring
requirement is to provide operational information regarding the
performance of the measures used at the site to minimize the
discharge of pollutants and to protect beneficial uses and receiving
waters from the adverse effects of construction-related storm water
discharges. The NALs in this General Permit for pH and turbidity are
not directly enforceable and do not constitute NELs.
57. This General Permit requires dischargers with NAL exceedances to
immediately implement additional BM Ps and revise their Storm Water
Pollution Prevention Plans (SWPPPs) accordingly to either prevent
pollutants and authorized non-storm water discharges from
contaminating storm water, or to substantially reduce the pollutants to
levels consistently below the NALs. NAL exceedances are reported in
the State Water Boards SMARTS system, and the discharger is
required to provide an NAL Exceedance Report when requested by a
Regional Water Board.
58. If run-on is caused by a forest fire or any other natural disaster, then
NELs do not apply.
59. Exceedances of the NELs are a violation of this Permit. This General
Permit requires dischargers with NEL exceedances to implement
additional monitoring, BMPs, and revise their SWPPP5 accordingly.
Dischargers are required to notify the State and Regional Water
Boards of the violation through the State Water Boards SMARTs
system, and provide an NEL Violation Report sharing additional
information concerning the NEL exceedance.
I. Receiving Water Limitations
60. This General Permit requires all enrolled dischargers to determine the
receiving waters potentially affected by their discharges and to comply
with all applicable water quality standards, including any more stringent
standards applicable to a water body.
J. Sampling, Monitoring, Reporting and Record Keeping
61. Visual monitoring of storm water and non-storm water discharges is
required for all sites subject to this General Permit.
2009-0009-DWQ 10 September 02, 2009
Order
Records of all visual monitoring inspections are required to remain on-
site during the construction period and for a minimum of three years.
For all Risk Level 3 and Risk Level 2 sites, this General Permit
requires effluent monitoring for pH and turbidity. Sampling, analysis
and monitoring requirements for effluent monitoring for pH and turbidity
are contained in this General Permit.
Risk Level 3 sites in violation of the Numeric Effluent Limitations
contained in this General Permit and with direct discharges to receiving
water are required to conduct receiving water monitoring.
For Risk Level 3 sites larger than 30 acres and with direct discharges
to receiving waters, this General Permit requires bioassessment
sampling before and after site completion to determine if significant
degradation to the receiving waters biota has occurred.
Bioassessment sampling guidelines are contained in this General
Permit.
A summary and evaluation of the sampling and analysis results will be
submitted in the Annual Reports.
This General Permit contains sampling, analysis and monitoring
requirements for non-visible pollutants at all sites subject to this
General Permit.
Compliance with the General Permit relies upon dischargers to
electronically self-report any discharge violations and to comply with
any Regional Water Board enforcement actions.
This General Permit requires that all dischargers maintain a paper or
electronic copy of all required records for three years from the date
generated or date submitted, whichever is last. These records must be
available at the construction site until construction is completed. For
LUPs, these documents may be retained in a crew members vehicle
and made available upon request.
K. Active Treatment System (ATS) Requirements
Active treatment systems add chemicals to facilitate flocculation,
coagulation and filtration of suspended sediment particles. The
uncontrolled release of these chemicals to the environment can
negatively affect the beneficial uses of receiving waters and/or degrade
water quality (e.g., acute and chronic toxicity). Additionally, the batch
storage and treatment of storm water through an ATS' can potentially
2009-0009-DWQ 11 September 02, 2009
Order
cause physical impacts on receiving waters if storage volume is
inadequate or due to sudden releases of the ATS batches and
improperly designed ouffalls.
If designed, operated and maintained properly an ATS can achieve
very high removal rates of suspended sediment (measured as
turbidity), albeit at sometimes significantly higher costs than traditional
erosion/sediment control practices. As a result, this General Permit
establishes NELs consistent with the expected level of typical ATS
performance.
This General Permit requires discharges of storm water associated
with construction activity that undergo active treatment to comply with
special operational and effluent limitations to ensure that these
discharges do not adversely affect the beneficial uses of the receiving
waters or cause degradation of their water quality.
For ATS discharges, this General Permit establishes technology-based
NELs for turbidity.
This General Permit establishes a 10 year, 24 hour (expressed in
inches of rainfall) Compliance Storm Event exemption from the
technology-based numeric effluent limitations for ATS discharges.
Exceedances of the ATS turbidity NEL constitutes a violation of this
General Permit.
L. Post-Construction Requirements
This General Permit includes performance standards for post-
construction that are consistent with State Water Board Resolution No.
2005-0006, "Resolution Adopting the Concept of Sustainability as a
Core Value for State Water Board Programs and Directing Its
Incorporation," and 2008-0030, "Requiring Sustainable Water
Resources Management." The requirement for all construction sites to
match pre-project hydrology will help ensure that the physical and
biological integrity of aquatic ecosystems are sustained. This "runoff
reduction" approach is analogous in principle to Low Impact
Development (LID) and will serve to protect related watersheds and
waterbodies from both hydrologic-based and pollution impacts
associated with the post-construction landscape.
LUP projects are not subject to post-construction requirements due to
the nature of their construction to return project sites to pre-
construction conditions.
2009-0009-DWQ 12 September 02, 2009
Order
M. Storm Water Pollution Prevention Plan Requirements
This General Permit requires the development of a site-specific
SWPPP. The SWPPP must include the information needed to
demonstrate compliance with all requirements of this General Permit,
and must be kept on the construction site and be available for review.
The discharger shall ensure that a QSD develops the SWPPP.
To ensure proper site oversight, this General Permit requires a
Qualified SWPPP Practitioner to oversee implementation of the BMPs
required to comply with this General Permit.
N. Regional Water Board Authorities
79. Regional Water Boards are responsible for implementation and
enforcement of this General Permit. A general approach to permitting
is not always suitable for every construction site and environmental
circumstances. Therefore, this General Permit recognizes that
Regional Water Boards must have some flexibility and authority to
alter, approve, exempt, or rescind permit authority granted under this
General Permit in order to protect the beneficial uses of our receiving
waters and prevent degradation of water quality.
2009-0009-DWQ 13 September 02, 2009
Order
IT IS HEREBY ORDERED that all dischargers subject to this General Permit
shall comply with the following conditions and requirements (including all
conditions and requirements as set forth in Attachments A, B, C, D, E and F)6:
II. CONDITIONS FOR PERMIT COVERAGE
A. Linear Underground/Overhead Projects (LUPs)
Linear Underground/Overhead Projects (LUPs) include, but are not
limited to, any conveyance, pipe, or pipeline for the transportation of
any gaseous, liquid (including water and wastewater for domestic
municipal services), liquescent, or slurry substance; any cable line or
wire for the transmission of electrical energy; any cable line or wire for
communications (e.g. telephone, telegraph, radio or television
messages); and associated ancillary facilities. Construction activities
associated with LUPs include, but are not limited to, (a) those activities
necessary for the installation of underground and overhead linear
facilities (e.g., conduits, substructures, pipelines, towers, poles, cables,
wires, connectors, switching, regulating and transforming equipment,
and associated ancillary facilities); and include, but are not limited to,
(b) underground utility mark-out, potholing, concrete and asphalt
cutting and removal, trenching, excavation, boring and drilling, access
road and pole/tower pad and cable/wire pull station, substation
construction, substructure installation, construction of tower footings
and/or foundations, pole and tower installations, pipeline installations,
welding, concrete and/ or pavement repair or replacement, and
stockpile/borrow locations.
The utility company, municipality, or other public or private company or
agency that owns or operates the linear underground/overhead project
is responsible for obtaining coverage under the General Permit where
the construction of pipelines, utility lines, fiber-optic cables, or other
linear underground/overhead projects will occur across several
properties unless the LUP construction activities are covered under
another construction storm water permit.
Only LUPs shall comply with the conditions and requirements in
Attachment A, A.1 & A.2 of this Order. The balance of this Order is not
applicable to LUPs except as indicated in Attachment A.
B. Obtaining Permit Coverage Traditional Construction Sites
6 These attachments are part of the General Permit itself and are not separate documents that are capable
of being updated independently by the State Water Board.
2009-0009-DWQ 14 September 02, 2009
Order
1. The Legally Responsible Person (LRP) (see Special Provisions,
Electronic Signature and Certification Requirements, Section IV. l.1)
must obtain coverage under this General Permit.
2. To obtain coverage, the LRP must electronically file Permit
Registration Documents (PRDs) prior to the commencement of
construction activity. Failure to obtain coverage under this General
Permit for storm water discharges to waters of the United States is a
violation of the CWA and the California Water Code.
3. PRDs shall consist of:
Notice of Intent (NOI)
Risk Assessment (Section VIII)
Site Map
Storm Water Pollution Prevention Plan (Section XIV)
Annual Fee
Signed Certification Statement
Any information provided to the Regional Water Board shall comply
with the Homeland Security Act and any other federal law that
concerns security in the United States; any information that does not
comply should not be submitted.
Attachment B contains additional PRD information. Dischargers must
electronically file the PRDs, and mail the appropriate annual fee to the
State Water Board.
4. This permit is effective on July 1, 2010.
Dischargers Obtaining Coverage On or After July 1, 2010: All
dischargers requiring coverage on or after July 1, 2010, shall
electronically file their PRDs prior to the commencement of
construction activities, and mail the appropriate annual fee no later
than seven days prior to the commencement of construction
activities. Permit coverage shall not commence until the PRDs and
the annual fee are received by the State Water Board, and a WDID
number is assigned and sent by SMARTS.
Dischargers Covered Under 99-08-DWQ and 2003-0007-DWQ:
Existing dischargers subject to State Water Board Order No. 99-08-
DWQ (existing dischargers) will continue coverage under 99-08-
DWQ until July 1, 2010. After July 1, 2010, all NOIs subject to
State Water Board Order No. 99-08-DWQ will be terminated.
Existing dischargers shall electronically file their PRDs no later than
2009-0009-DWQ 15 September 02, 2009
Order
July 1, 2010. If an existing discharger's site acreage subject to the
annual fee has changed, it shall mail a revised annual fee no less
than seven days after receiving the revised annual fee notification,
or else lose permit coverage. All existing dischargers shall be
exempt from the risk determination requirements in Section VIII of
this General Permit until two years after permit adoption. All
existing dischargers are therefore subject to Risk Level I
requirements regardless of their site's sediment and receiving water
risks. However, a Regional Board retains the authority to require
an existing discharger to comply with the Section VIII risk
determination requirements.
The discharger is only considered covered by this General Permit upon
receipt of a Waste Discharger Identification (WDID) number assigned
and sent by the State Water Board Storm water Multi-Application and
Report Tracking System (SMARTS). In order to demonstrate
compliance with this General Permit, the discharger must obtain a
WDID number and must present documentation of a valid WDID upon
demand.
During the period this permit is subject to review by the U.S. EPA, the
prior permit (State Water Board Order No. 99-08-DWQ) remains in
effect. Existing dischargers under the prior permit will continue to have
coverage under State Water Board Order No. 99-08-DWQ until this
General Permit takes effect on July 1, 2010. Dischargers who
complete their projects and electronically file an NOT prior to July 1,
2010, are not required to obtain coverage under this General Permit.
Small Construction Rainfall Erosivity Waiver
EPA's Small Construction Erosivity Waiver applies to sites between
one and five acres demonstrating that there are no adverse water
quality impacts.
Dischargers eligible for a Rainfall Erosivity Waiver based on low
erosivity potential shall complete the electronic Notice of Intent (NOI)
and Sediment Risk form through the State Water Board's SMARTS
system, certifying that the construction activity will take place during a
period when the value of the rainfall erosivity factor is less than five.
Where the LRP changes or another LRP is added during construction,
the new LRP must also submit a waiver certification through the
SMARTS system.
If a small construction site continues beyond the projected completion
date given on the waiver certification, the LRP shall recalculate the
rainfall erosivity factor for the new project duration and submit this
2009-0009-DWQ 16 September 02, 2009
Order
information through the SMARTS system. If the new R factor is below
five (5), the discharger shall update through SMARTS all applicable
information on the waiver certification and retain a copy of the revised
waiver onsite. The LRP shall submit the new waiver certification 30
days prior to the projected completion date listed on the original waiver
form to assure exemption from permitting requirements is
uninterrupted. If the new R factor is five (5) or above, the LRP shall be
required to apply for coverage under this Order.
8. In the case of a public emergency that requires immediate construction
activities, a discharger shall submit a brief description of the
emergency construction activity within five days of the onset of
construction, and then shall submit all PRDs within thirty days.
C. Revising Permit Coverage for Change of Acreage or New Ownership
The discharger may reduce or increase the total acreage covered
under this General Permit when a portion of the site is complete and/or
conditions for termination of coverage have been met (See Section ll.D
Conditions for Termination of Coverage); when ownership of a portion
of the site is sold to a different entity; or when new acreage, subject to
this General Permit, is added to the site.
Within 30 days of a reduction or increase in total disturbed acreage,
the discharger shall electronically file revisions to the PRDs that
include:
A revised NOI indicating the new project size;
A revised site map showing the acreage of the site completed,
acreage currently under construction, acreage sold/transferred or
added, and acreage currently stabilized in accordance with the
Conditions for Termination of Coverage in Section ll.D below.
SWPPP revisions, as appropriate; and
Certification that any new landowners have been notified of
applicable requirements to obtain General Permit coverage. The
certification shall include the name, address, telephone number,
and e-mail address of the new landowner.
If the project acreage has increased, dischargers shall mail
payment of revised annual fees within 14 days of receiving the
revised annual fee notification.
2009-0009-DWQ 17 September 02, 2009
Order
The discharger shall continue coverage under the General Permit for
any parcel that has not achieved "Final Stabilization" as defined in
Section ll.D.
When an LRP owns property with active General Permit coverage, and
the LRP sells the property, or a parcel thereof, to another person, that
person shall become an LRP with respect to whatever parcel was sold.
The existing LRP shall inform the new LRP of the General Permit's
requirements. In order for the new LRP to continue the construction
activity on its parcel of property, the new LRP, or the new LRP's
approved signatory, must submit PRDs in accordance with this
General Permit's requirements.
D. Conditions for Termination of Coverage
Within 90 days of when construction is complete or ownership has
been transferred, the discharger shall electronically file a Notice of
Termination (NOT), a final site map, and photos through the State
Water Boards SMARTS system. Filing a NOT certifies that all General
Permit requirements have been met. The Regional Water Board will
consider a construction site complete only when all portions of the site
have been transferred to a new owner, or all of the following conditions
have been met:
For purposes of "final stabilization," the site will not pose any
additional sediment discharge risk than it did prior to the
commencement of construction activity;
There is no potential for construction-related storm water pollutants
to be discharged into site runoff;
Final stabilization has been reached;
Construction materials .and wastes have been disposed of properly;
Compliance with the Post-Construction Standards in Section XIII of
this General Permit has been demonstrated;
Post-construction storm water management measures have been
installed and a long-term maintenance plan has been established;
and
For the purposes of this requirement a long-term maintenance plan will be designed for a minimum of five
years, and will describe the procedures to ensure that the post-construction storm water management
measures are adequately maintained.
2009-0009-DWQ 18 September 02, 2009
Order
g. All construction-related equipment, materials and any temporary
BMPs no longer needed are removed from the site.
The discharger shall certify that final stabilization conditions are
satisfied in their NOT. Failure to certify shall result in continuation of
permit coverage and annual billing.
The NOT must demonstrate through photos, RUSLE or RUSLE2, or
results of testing and analysis that the site meets all of the conditions
above (Section ll.D.1) and the final stabilization condition (Section
ll.D.1.a) is attained by one of the following methods:
70% final cover method," no computational proof required
OR:
"RUSLE or RUSLE2 method," computational proof required
OR:
"Custom method", the discharger shall demonstrate in some other
manner than a or b, above, that the site complies with the "final
stabilization" requirement in Section II. D. l.a.
2009-0009-DWQ 19 September 02, 2009
Order
III. DISCHARGE PROHIBITIONS
Dischargers shall not violate any discharge prohibitions contained in
applicable Basin Plans or statewide water quality control plans. Waste
discharges to Areas of Special Biological Significance (ASBS) are
prohibited by the California Ocean Plan, unless granted an exception
issued by the State Water Board.
All discharges are prohibited except for the storm water and non-storm
water discharges specifically authorized by this General Permit or another
NPDES permit.
Authorized non-storm water discharges may include those from de-
chlorinated potable water sources such as: fire hydrant flushing, irrigation
of vegetative erosion control measures, pipe flushing and testing, water to
control dust, uncontaminated ground water from dewatenng, and other
discharges not subject to a separate general NPDES permit adopted by a
Regional Water Board. The discharge of non-storm water is authorized
under the following conditions:
The discharge does not cause or contribute to a violation of any water
quality standard;
The discharge does not violate any other provision of this General
Permit;
The discharge is not prohibited by the applicable Basin Plan;
The discharger has included and implemented specific BMPs required
by this General Permit to prevent or reduce the contact of the non-
storm water discharge with construction materials or equipment.
The discharge does not contain toxic constituents in toxic amounts or
(other) significant quantities of pollutants;
The discharge is monitored and meets the applicable NALs and NELs;
and
The discharger reports the sampling information in the Annual Report.
If any of the above conditions are not satisfied, the discharge is not
authorized by this General Permit. The discharger shall notify the
Regional Water Board of any anticipated non-storm water discharges not
already authorized by this General Permit or another NPDES permit, to
determine whether a separate NPDES permit is necessary.
2009-0009-DWQ 20 September 02, 2009
Order
Debris resulting from construction activities are prohibited from being
discharged from construction sites.
When soil contamination is found or suspected and a responsible party is
not identified, or the responsible party fails to promptly take the
appropriate action, the discharger shall have those soils sampled and
tested to ensure proper handling and public safety measures are
implemented. The discharger shall notify the appropriate local, State, and
federal agency(ies) when contaminated soil is found at a construction site,
and will notify the appropriate Regional Water Board.
2009-0009-DWQ 21 September 02, 2009
Order
IV.SPECIAL PROVISIONS
A. Duty to Comply
The discharger shall comply with all of the conditions of this General
Permit. Any permit noncompliance constitutes a violation of the Clean
Water Act (CWA) and the Porter-Cologne Water Quality Control Act
and is grounds for enforcement action and/or removal from General
Permit coverage.
The discharger shall comply with effluent standards or prohibitions
established under Section 307(a) of the CWA for toxic pollutants within
the time provided in the regulations that establish these standards or
prohibitions, even if this General Permit has not yet been modified to
incorporate the requirement.
B. General Permit Actions
This General Permit may be modified, revoked and reissued, or
terminated for cause. The filing of a request by the discharger for a
General Permit modification, revocation and reissuance, or
termination, or a notification of planned changes or anticipated
noncompliance does not annul any General Permit condition.
If any toxic effluent standard or prohibition (including any schedule of
compliance specified in such effluent standard or prohibition) is
promulgated under Section 307(a) of the CWA for a toxic pollutant
which is present in the discharge and that standard or prohibition is
more stringent than any limitation on the pollutant in this General
Permit, this General Permit shall be modified or revoked and reissued
to conform to the toxic effluent standard or prohibition and the
dischargers so notified.
C. Need to Halt or Reduce Activity Not a Defense
It shall not be a defense for a discharger in an enforcement action that it
would have been necessary to halt or reduce the permitted activity in
order to maintain compliance with the conditions of this General Permit.
D. Duty to Mitigate
The discharger shall take all responsible steps to minimize or prevent any
discharge in violation of this General Permit, which has a reasonable
likelihood of adversely affecting human health or the environment.
2009-0009-DWQ 22 September 02, 2009
Order
E. Proper Operation and Maintenance
The discharger shall at all times properly operate and maintain any
facilities and systems of treatment and control (and related
appurtenances) which are installed or used by the discharger to achieve
compliance with the conditions of this General Permit. Proper operation
and maintenance also includes adequate laboratory controls and
appropriate quality assurance procedures. Proper operation and
maintenance may require the operation of backup or auxiliary facilities or
similar systems installed by a discharger when necessary to achieve
compliance with the conditions of this General Permit.
F. Property Rights
This General Permit does not convey any property rights of any sort or
any exclusive privileges, nor does it authorize any injury to private
property or any invasion of personal rights, nor does it authorize any
infringement of Federal, State, or local laws or regulations.
G. Duty to Maintain Records and Provide Information
The discharger shall maintain a paper or electronic copy of all required
records, including a copy of this General Permit, for three years from
the date generated or date submitted, whichever is last. These
records shall be available at the construction site until construction is
completed.
The discharger shall furnish the Regional Water Board, State Water
Board, or U.S. EPA, within a reasonable time, any requested
information to determine compliance with this General Permit. The
discharger shall also furnish, upon request, copies of records that are
required to be kept by this General Permit.
H. Inspection and Entry
The discharger shall allow the Regional Water Board, State Water Board,
U.S. EPA, and/or, in the case of construction sites which discharge
through a municipal separate storm sewer, an authorized representative of
the municipal operator of the separate storm sewer system receiving the
discharge, upon the presentation of credentials and other documents as
may be required by law, to:
1. Enter upon the discharger's premises at reasonable times where a
regulated construction activity is being conducted or where records
must be kept under the conditions of this General Permit;
2009-0009-DWQ 23 September 02, 2009
Order
Access and copy at reasonable times any records that must be kept
under the conditions of this General Permit;
Inspect at reasonable times the complete construction site, including
any off-site staging areas or material storage areas, and the
erosion/sediment controls; and
Sample or monitor at reasonable times for the purpose of ensuring
General Permit compliance.
I. Electronic Signature and Certification Requirements
All Permit Registration Documents (PRDs) and Notice of Terminations
(NOTs) shall be electronically signed, certified, and submitted via
SMARTS to the State Water Board. Either the Legally Responsible
Person (LRP) or a person legally authorized to sign and certify PRDs
and NOTs on behalf of the LRP (the LRP's Approved Signatory) must
submit all information electronically via SMARTS.
a. The LRP's Approved Signatory must be one of the following:
For a corporation: a responsible corporate officer. For the
purpose of this section, a responsible corporate officer means:
(a) a president, secretary, treasurer, or vice-president of the
corporation in charge of a principal business function, or any
other person who performs similar policy or decision-making
functions for the corporation; or (b) the manager of the facility if
authority to sign documents has been assigned or delegated to
the manager in accordance with corporate procedures;
For a partnership or sole proprietorship: a general partner or the
proprietor, respectively;
For a municipality, State, Federal, or other public agency: either
a principal executive officer or ranking elected official. The
principal executive officer of a Federal agency includes the chief
executive officer of the agency or the senior executive officer
having responsibility for the overall operations of a principal
geographic unit of the agency (e.g., Regional Administrators of
U.S. EPA);
For the military: Any military officer who has been designated.
For a public university: An authorized university official
2009-0009-DWQ 24 September 02, 2009
Order
b. Changes to Authorization. If an approved signatory's authorization
is no longer accurate, a new authorization satisfying the
requirements of paragraph (a) of this section must be submitted via
SMARTS prior to or together with any reports, information or
applications to be signed by an approved signatory.
2. All Annual Reports, or other information required by the General Permit
(other than PRDs and NOTs) or requested by the Regional Water
Board, State Water Board, U.S. EPA, or local storm water
management agency shall be certified and submitted by the LRP or
the LRP's approved signatory as described above.
Certification
Any person signing documents under Section IV.l above, shall make the
following certification:
"I certify under penalty of law that this document and all attachments were
prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate
the information submitted. Based on my inquiry of the person or persons
who manage the system or those persons directly responsible for
gathering the information, to the best of my knowledge and belief, the
information submitted is, true, accurate, and complete. I am aware that
there are significant penalties for submitting false information, including
the possibility of fine and imprisonment for knowing violations."
Anticipated Noncompliance
The discharger shall give advance notice to the Regional Water Board and
local storm water management agency of any planned changes in the
construction activity, which may result in noncompliance with General
Permit requirements.
Bypass
Bypass8 is prohibited. The Regional Water Board may take enforcement
action against the discharger for bypass unless:
1. Bypass was unavoidable to prevent loss of life, personal injury or
severe property damage;9
8 The intentional diversion of waste streams from any portion of a treatment facility
Severe property damage means substantial physical damage to property, damage to the treatment
facilities that causes them to become inoperable, or substantial and permanent loss of natural resources that
can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean
economic loss caused by delays in production.
2009-0009-DWQ 25 September 02, 2009
Order
There were no feasible alternatives to bypass, such as the use of
auxiliary treatment facilities, retention of untreated waste, or
maintenance during normal periods of equipment downtime. This
condition is not satisfied if adequate back-up equipment should have
been installed in the exercise of reasonable engineering judgment to
prevent a bypass that could occur during normal periods of equipment
downtime or preventative maintenance;
The discharger submitted a notice at least ten days in advance of the
need for a bypass to the Regional Water Board; or
The discharger may allow a bypass to occur that does not cause
effluent limitations to be exceeded, but only if it is for essential
maintenance to assure efficient operation. In such a case, the above
bypass conditions are not applicable. The discharger shall submit
notice of an unanticipated bypass as required.
M. Upset
1. A discharger that wishes to establish the affirmative defense of an
upset1° in an action brought for noncompliance shall demonstrate,
through properly signed, contemporaneous operating logs, or other
relevant evidence that:
An upset occurred and that the discharger can identify the cause(s)
of the upset
The treatment facility was being properly operated by the time of
the upset
The discharger submitted notice of the upset as required; and
d: The discharger complied with any remedial measures required
2. No determination made before an action of noncompliance occurs,
such as during administrative review of claims that noncompliance was
caused by an upset, is final administrative action subject to judicial
review.
3. In any enforcement proceeding, the discharger seeking to establish the
occurrence of an upset has the burden of proof
10 An exceptional incident in which there is unintentional and temporary noncompliance the technology
based numeric effluent limitations because of factors beyond the reasonable control of the discharger. An
upset does not include noncompliance to the extent caused by operational error, improperly designed
treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper
operation.
2009-0009-DWQ 26 September 02, 2009
Order
N. Penalties for Falsification of Reports
Section 309(c)(4) of the CWA provides that any person who knowingly
makes any false material statement, representation, or certification in any
record or other document submitted or required to be maintained under
this General Permit, including reports of compliance or noncompliance
shall upon conviction, be punished by a fine of not more than $10,000 or
by imprisonment for not more than two years or by both.
0. Oil and Hazardous Substance Liability
Nothing in this General Permit shall be construed to preclude the
institution of any legal action or relieve the discharger from any
responsibilities, liabilities, or penalties to which the discharger is or may be
subject to under Section 311 of the CWA.
Severability
The provisions of this General Permit are severable; and, if any provision
of this General Permit or the application of any provision of this General
Permit to any circumstance is held invalid, the application of such
provision to other circumstances and the remainder of this General Permit
shall not be affected thereby.
Reopener Clause
This General Permit may be modified, revoked and reissued, or
terminated for cause due to promulgation of amended regulations, receipt
of U.S. EPA guidance concerning regulated activities, judicial decision, or
in accordance with 40 Code of Federal Regulations (CFR) 122.62, 122.63,
122.64, and 124.5.
Penalties for Violations of Permit Conditions
Section 309 of the CWA provides significant penalties for any person
who violates a permit condition implementing Sections 301, 302, 306,
307, 308, 318, or 405 of the CWA or any permit condition or limitation
implementing any such section in a permit issued under Section 402.
Any person who violates any permit condition of this General Permit is
subject to a civil penalty not to exceed $37,50011 per calendar day of
such violation, as well as any other appropriate sanction provided by
Section 309 of the CWA.
"Maybe further adjusted in accordance with the Federal Civil Penalties Inflation Adjustment Act
2009-0009-DWQ 27 September 02, 2009
Order
2. The Porter-Cologne Water Quality Control Act also provides for civil
and criminal penalties, which in some cases are greater than those
under the CWA.
Transfers
This General Permit is not transferable.
Continuation of Expired Permit
This General Permit continues in force and effect until a new General
Permit is issued or the SWRCB rescinds this General Permit. Only those
dischargers authorized to discharge under the expiring General Permit are
covered by the continued General Permit.
2009-0009-DWQ 28 September 02, 2009
Order
V. EFFLUENT STANDARDS
A. Narrative Effluent Limitations
Storm water discharges and authorized non-storm water discharges
regulated by this General Permit shall not contain a hazardous
substance equal to or in excess of reportable quantities established in
40 C.F.R. §§ 117.3 and 302.4, unless a separate NPDES Permit has
been issued to regulate those discharges.
Dischargers shall minimize or prevent pollutants in storm water
discharges and authorized non-storm water discharges through the
use of controls, structures, and management practices that achieve
BAT for toxic and non-conventional pollutants and BCT for
conventional pollutants.
B. Numeric Effluent Limitations (NELs)
Table 1-Numeric Effluent Limitations, Numeric Action Levels, Test Methods,
Detection Limits, and Reporting Units
Parameter Test Discharge Mm. Units Numeric Numeric
Method Type Detection Action Effluent
Limit Level Limitation
pH lower NAL=
Field test Risk Level 6. 5
upper NAL = N/A
with PH 8.5 calibrated 0.2 units lower NAL = lower NEL = portable 6.5 instrument Risk Level 3 6.0 upper NAL = upper NEL =
8.5 9.0
Turbidity EPA
0180.1 Risk Level 250 NTU N/A
and/or field
test with I NTU
calibrated Risk Level 3 250 NTU 500 NTU portable
instrument
1. Numeric Effluent Limitations (NELs):
a. Storm Event, Daily Average pH Limits - For Risk Level 3
dischargers, the pH of storm water and non-storm water discharges
2009-0009-DWQ 29 September 02, 2009
Order
shall be within the ranges specified in Table I during any site phase
where there is a "high risk of pH discharge. 02
b. Storm Event Daily Average Turbidity Limit - For Risk Level 3
dischargers, the turbidity of storm water and non-storm water
discharges shall not exceed 500 NTU.
If daily average sampling results are outside the range of pH NELs
(i.e., is below the lower NEL for pH or exceeds the upper NEL for pH)
or exceeds the turbidity NEL (as listed in Table I), the discharger is in
violation of this General Permit and shall electronically file monitoring
results in violation within 5 business days of obtaining the results.
Compliance Storm Event:
Discharges of storm water from Risk Level 3 sites shall comply with
applicable NELs (above) unless the storm event causing the
discharges is determined after the fact to be equal to or larger than the
Compliance Storm Event (expressed in inches of rainfall). The
Compliance Storm Event for Risk Level 3 discharges is the 5 year,
24 hour storm (expressed in tenths of an inch of rainfall), as
determined by using these maps:
httD://www.wrcc.dri.edu/gcpnfrea/nca5v24.aif
httD://www.wrcc.dri.edu/nconfreg/sca5v24.aif
Compliance storm event verification shall be done by reporting on-site
rain gauge readings as well as nearby governmental rain gauge
readings.
Dischargers shall not be required to comply with NELs if the site
receives run-on from a forest fire or any other natural disaster.
C. Numeric Action Levels (NALs)
I. For Risk Level 2 and 3 dischargers, the lower storm event average
NAL for pH is 6.5 pH units and the upper storm event average NAL for
pH is 8.5 pH units. The discharger shall take actions as described
below if the discharge is outside of this range of pH values.
12A period of high risk of pH discharge is defined as a projects complete utilities phase, complete vertical
build phase, and any portion of any phase where significant amounts of materials are placed directly on the
land at the site in a manner that could result in significant alterations of the background pH of the
discharges.
2009-0009-DWQ 30 September 02, 2009
Order
For Risk Level 2 and 3 dischargers, the NAL storm event daily average
for turbidity is 250 NTU. The discharger shall take actions as
described below if the discharge is outside of this range of turbidity
values.
Whenever the results from a storm event daily average indicate that
the discharge is below the lower NAL for pH, exceeds the upper NAL
for pH, or exceeds the turbidity NAL (as listed in Table 1), the
discharger shall conduct a. construction site and run-on evaluation to
determine whether pollutant source(s) associated with the site's
construction activity may have caused or contributed to the NAL
exceedance and shall immediately implement corrective actions if they
are needed.
The site evaluation shall be documented in the SWPPP and
specifically address whether the source(s) of the pollutants causing the
exceedance of the NAL:
Are related to the construction activities and whether additional
BMPs are required to (1) meet BAT/BCT requirements; (2) reduce
or prevent pollutants in storm water discharges from causing
exceedances of receiving water objectives; and (3) determine what
corrective action(s) were taken or will be taken and with a
description of the schedule for completion.
AND/OR:
Are related to the run-on associated with the construction site
location and whether additional BMPs measures are required to (1)
meet BATIBCT requirements; (2) reduce or prevent pollutants in
storm water discharges from causing exceedances of receiving
water objectives; and (3) what corrective action(s) were taken or
will be taken with a description of the schedule for completion.
2009-0009-DWQ 31 September 02, 2009
Order
VI.RECEIVING WATER LIMITATIONS
The discharger shall ensure that storm water discharges and authorized
non-storm water discharges to any surface or ground water will not
adversely affect human health or the environment.
The discharger shall ensure that storm water discharges and authorized
non-storm water discharges will not contain pollutants in quantities that
threaten to cause pollution or a public nuisance.
The discharger shall ensure that storm water discharges and authorized
non-storm water discharges will not contain pollutants that cause or
contribute to an exceedance of any applicable water quality objectives or
water quality standards (collectively, WQS) contained in a Statewide
Water Quality Control Plan, the California Toxics Rule, the National Toxics
Rule, or the applicable Regional Water Board's Water Quality Control Plan
(Basin Plan).
Dischargers located within the watershed of a CWA § 303(d) impaired
water body, for which a TMDL has been approved by the U.S. EPA, shall
comply with the approved TMDL if it identifies "construction activity" or
land disturbance as a source of the pollution.
2009-0009-DWQ 32 September 02, 2009
Order
VII. TRAINING QUALIFICATIONS AND CERTIFICATION
REQUIREMENTS
General
The discharger shall ensure that all persons responsible for implementing
requirements of this General Permit shall be appropriately trained in
accordance with this Section. Training should be both formal and
informal, occur on an ongoing basis, and should include training offered by
recognized governmental agencies or professional organizations. Those
responsible for preparing and amending SWPPPs shall comply with the
requirements in this Section VII.
The discharger shall provide documentation of all training for persons
responsible for implementing the requirements of this General Permit in
the Annual Reports.
SWPPP Certification Requirements
1. Qualified SWPPP Developer: The discharger shall ensure that
SWPPPs are written, amended and certified by a Qualified SWPPP
Developer (QSD). A QSD shall have one of the following registrations
or certifications, and appropriate experience, as required for:
A California registered professional civil engineer;
A California registered professional geologist or engineering
geologist;
A California registered landscape architect;
A professional hydrologist registered through the Amencan Institute
of Hydrology;
A Certified Professional in Erosion and Sediment Control (CPESC)
TM registered through Enviro Cert International, Inc.;
A Certified Professional in Storm Water Quality (CPSWQ)TM
registered through Enviro Cert International, Inc.; or
A professional in erosion and sediment control registered through
the National Institute for Certification in Engineering Technologies
(NICET);
2009-0009-DWQ 33 September 02, 2009
Order
Effective two years after the adoption date of this General Permit, a
QSD shall have attended a State Water Board-sponsored or approved
QSD training course.
2. The discharger shall list the name and telephone number of the
currently designated Qualified SWPPP Developer(s) in the SWPPP.
3. Qualified SWPPP Practitioner: The discharger shall ensure that all
BMPs required by this General Permit are implemented by a Qualified
SWPPP Practitioner (QSP). A QSP is a person responsible for non-
storm water and storm water visual observations, sampling and
analysis. Effective two years from the date of adoption of this General
Permit, a QSP shall be either a QSD or have one of the following
certifications:
A certified erosion, sediment and storm water inspector registered
through Enviro Cert International, Inc.; or
A certified inspector of sediment and erosion control registered
through Certified Inspector of Sediment and Erosion Control, Inc.
Effective two years after the adoption date of this General Permit, a
QSP shall have attended a State Water Board-sponsored or approved
QSP training course.
4. The LRP shall list in the SWPPP, the name of any Approved Signatory,
and provide a copy of the written agreement or other mechanism that
provides this authority from the LRP in the SWPPP.
5. The discharger shall include, in the SWPPP, a list of names of all
contractors, subcontractors, and individuals who will be directed by the
Qualified SWPPP Practitioner. This list shall include telephone
numbers and work addresses. Specific areas of responsibility of each
subcontractor and emergency contact numbers shall also be included.
6. The discharger shall ensure that the SWPPP and each amendment will
be signed by the Qualified SWPPP Developer. The discharger shall
include a listing of the date of initial preparation and the date of each
amendment in the SWPPP.
VIII. RISK DETERMINATION
The discharger shall calculate the site's sediment risk and receiving water risk
during periods of soil exposure (i.e. grading and site stabilization) and use the
calculated risks to determine a Risk Level(s) using the methodology in
2009-0009-DWQ 34 September 02, 2009
Order
Appendix 1. For any site that spans two or more planning watersheds, 13 the
discharger shall calculate a separate Risk Level for each planning watershed.
The discharger shall notify the State Water Board of the site's Risk Level
determination(s) and shall include this determination as a part of submitting
the PRDs. If a discharger ends up with more than one Risk Level
determination, the Regional Water Board may choose to break the project
into separate levels of implementation.
IX.RISK LEVEL I REQUIREMENTS
Risk Level I Dischargers shall comply with the requirements included in
Attachment C of this General Permit.
RISK LEVEL 2 REQUIREMENTS
Risk Level 2 Dischargers shall comply with the requirements included in
Attachment D of this General Permit.
RISK LEVEL 3 REQUIREMENTS
Risk Level 3 Dischargers shall comply with the requirements included in
Attachment E of this General Permit.
ACTIVE TREATMENT SYSTEMS (ATS)
Dischargers choosing to implement an ATS on their site shall comply with all of
the requirements in Attachment F of this General Permit.
13 Planning watershed: defined by the Caiwater Watershed documents as a watershed that ranges in size
from approximately 3,000 to 10,000 acres httD://cain.ice.ucdavis.edu/calwater/calwfap.html,
http://gis.ca.gov/catalog/BrowseRecord.epl?id=22175.
2009-0009-DWQ 35 September 02, 2009
Order
XIII. POST-CONSTRUCTION STANDARDS
A. All dischargers shall comply with the following runoff reduction
requirements unless they are located within an area subject to post-
construction standards of an active Phase I or II municipal separate storm
sewer system (MS4) permit that has an approved Storm Water
Management Plan.
This provision shall take effect three years from the adoption date of
this permit, or later at the discretion of the Executive Officer of the
Regional Board.
The discharger shall demonstrate compliance with the requirements of
this section by submitting with their NOI a map and worksheets in
accordance with the instructions in Appendix 2. The discharger shall
use non-structural controls unless the discharger demonstrates that
non-structural controls are infeasible or that structural controls will
produce greater reduction in water quality impacts.
The discharger shall, through the use of non-structural and structural
measures as described in Appendix 2, replicate the pre-project water
balance (for this permit, defined as the volume of rainfall that ends up
as runoff) for the smallest storms up to the 85th percentile storm event
(or the smallest storm event that generates runoff, whichever is larger).
Dischargers shall inform Regional Water Board staff at least 30 days
prior to the use of any structural control measure used to comply with
this requirement. Volume that cannot be addressed using non-
structural practices shall be captured in structural practices and
approved by the Regional Water Board. When seeking Regional
Board approval for the use of structural practices, dischargers shall
document the infeasibility of using non-structural practices on the
project site, or document that there will be fewer water quality impacts
through the use of structural practices.
For sites whose disturbed area exceeds two acres, the discharger shall
preserve the pre-construction drainage density (miles of stream length
per square mile of drainage area) for all drainage areas within the area
serving a first order stream 14 or larger stream and ensure that post-
project time of runoff concentration is equal or greater than pre-project
time of concentration.
14 A first order stream is defined as a stream with no tributaries.
2009-0009-DWQ 36 September 02, 2009
Order
B. All dischargers shall implement BMPs to reduce pollutants in storm water
discharges that are reasonably foreseeable after all construction phases
have been completed at the site (Post-construction BMPs).
2009-0009-DWQ 37 September 02, 2009
Order
XIV. SWPPP REQUIREMENTS
A. The discharger shall ensure that the Storm Water Pollution Prevention
Plans (SWPPPs) for all traditional project sites are developed and
amended or revised by a QSD. The SWPPP shall be designed to address
the following objectives:
All pollutants and their sources, including sources of sediment
associated with construction, construction site erosion and all other
activities associated with construction activity are controlled;
Where not otherwise required to be under a Regional Water Board
permit, all non-storm water discharges are identified and either
eliminated, controlled, or treated;
Site BMPs are effective and result in the reduction or elimination of
pollutants in storm water discharges and authorized non-storm water
discharges from construction activity to the BAT/BCT standard;
Calculations and design details as well as BMP controls for site run-on
are complete and correct, and
Stabilization BMPs installed to reduce or eliminate pollutants after
construction are completed.
B. To demonstrate compliance with requirements of this General Permit, the
QSD shall include information in the SWPPP that supports the
conclusions, selections, use, and maintenance of BMPs.
C. The discharger shall make the SWPPP available at the construction site
during working hours while construction is occurring and shall be made
available upon request by a State or Municipal inspector. When the
original SWPPP is retained by a crewmember in a construction vehicle
and is not currently at the construction site, current copies of the BMPs
and map/drawing will be left with the field crew and the original SWPPP
shall be made available via a request by radio/telephone.
2009-0009-DWQ 38 September 02, 2009
Order
XV. REGIONAL WATER BOARD AUTHORITIES
In the case where the Regional Water Board does not agree with the
dischargers self-reported risk level (e.g., they determine themselves to be
a Level I Risk when they are actually a Level 2 Risk site), Regional Water
Boards may either direct the discharger to reevaluate the Risk Level(s) for
their site or terminate coverage under this General Permit.
Regional Water Boards may terminate coverage under this General
Permit for dischargers who fail to comply with its requirements or where
they determine that an individual NPDES permit is appropriate.
Regional Water Boards may require dischargers to submit a Report of
Waste Discharge / NPDES permit application for Regional Water Board
consideration of individual requirements.
Regional Water Boards may require additional Monitoring and Reporting
Program Requirements, including sampling and analysis of discharges to
sediment-impaired water bodies.
Regional Water Boards may require dischargers to retain records for more
than the three years required by this General Permit.
2009-0009-DWQ 39 September 02, 2009
Order
XVI. ANNUAL REPORTING REQUIREMENTS
A. All dischargers shall prepare and electronically submit an Annual Report
no later than September 1 of each year.
B. The discharger shall certify each Annual Report in accordance with the
Special Provisions.
C. The discharger shall retain an electronic or paper copy of each Annual
Report for a minimum of three years after the date the annual report is
filed.
D. The discharger shall include storm water monitoring information in the
Annual Report consisting of:
a summary and evaluation of all sampling and analysis results,
including copies of laboratory reports;
the analytical method(s), method reporting unit(s), and method
detection limit(s) of each analytical parameter (analytical results that
are less than the method detection limit shall be reported as "less than
the method detection limit");
a summary of all corrective actions taken during the compliance year;
identification of any compliance activities or corrective actions that
were not implemented;
a summary of all violations of the General Permit;
the names of individual(s) who performed the facility inspections,
sampling, visual observation (inspections), and/or measurements;
the date, place, time of facility inspections, sampling, visual
observation (inspections), and/or measurements, including
precipitation (rain gauge); and
the visual observation and sample collection exception records and
reports specified in Attachments C, D, and E.
E. The discharger shall provide training information in the Annual Report
consisting of:
1. documentation of all training for individuals responsible for all activities
associated with compliance with this General Permit;
2009-0009-DWQ 40 September 02, 2009
Order
documentation of all training for individuals responsible for BMP
installation, inspection, maintenance, and repair; and
documentation of all training for individuals responsible for overseeing,
revising, and amending the SWPPP.
2009-0009-DWQ 41 September 02, 2009
ATTACHMENT B
ATTACHMENT B
PERMIT REGISTRATION DOCUMENTS (PRDs) TO COMPLY WITH THE TERMS
OF THE GENERAL PERMIT TO DISCHARGE STORM WATER
ASSOCIATED WITH CONSTRUCTION ACTIVITY
GENERAL INSTRUCTIONS
All Linear Construction Projects shall comply with the PRD requirements in
Attachment A.2 of this Order.
Who Must Submit
Discharges of storm water associated with construction that results in the
disturbance of one acre or more of land must apply for coverage under the
General Construction Storm Water Permit (General Permit). Any construction
activity that is a part of a larger common plan of development or sale must also
be permitted, regardless of size. (For example, if 0.5 acre of a 20-acre
subdivision is disturbed by the construction activities of discharger A and the
remaining 19.5 acres is to be developed by discharger B, discharger A must
obtain a General Storm Water Permit for the 0.5 acre project).
Other discharges from construction activities that are covered under this General
Permit can be found in the General Permit Section ll.B.
It is the LRP's responsibility to obtain coverage under this General Permit by
electronically submitting complete PRDs (Permit Registration Documents).
In all cases, the proper procedures for submitting the PRDs must be completed
before construction can commence.
Construction Activity Not Covered By This General Permit
Discharges from construction that are not covered under this General Permit can
be found in the General Permit Sections ll.A &B..
Annual Fees and Fee Calculation
Annual fees are calculated based upon the total area of land to be disturbed not
the total size of the acreage owned. However, the calculation includes all acres
to be disturbed during the duration of the project. For example, if 10 acres are
scheduled to be disturbed the first year and 10 in each subsequent year for 5
years, the annual fees would be based upon 50 acres of disturbance. The State
Water Board will evaluate adding acreage to an existing Permit Waste Discharge
Identification (WDlD) number on a case-by-case basis. In general, any acreage
to be considered must be contiguous to the permitted land area and the existing
2009-0009-DWQ 1 September 2, 2009
ATTACHMENT B
SWPPP must be appropriate for the construction activity and topography of the
acreage under consideration. As acreage is built out and stabilized or sold, the
Change of Information (COI) form enables the applicant to remove those acres
from inclusion in the annual fee calculation. Checks should be made payable to:
State Water Board.
The Annual fees are established through regulations adopted by the State Water
Board. The total annual fee is the current base fee plus applicable surcharges for
all construction sites submitting an NOI, based on the total acreage to be
disturbed during the life of the project. Annual fees are subject to change by
regulation.
Dischargers that apply for and satisfy the Small Construction Erosivity Wavier
requirements shall pay a fee of $200.00 plus an applicable surcharge, see the
General Permit Section ll.B.7.
E. When to Apply
LRP's proposing to conduct construction activities subject to this General Permit
must submit their PRDs prior to the commencement of construction activity.
F. Requirements for Completing Permit Registration Documents (PRDs)
All dischargers required to comply with this General Permit shall electronically
submit the required PRDs for their type of construction as defined below.
G. Standard PRD Requirements (All Dischargers)
Notice of Intent
Risk Assessment (Standard or Site-Specific)
Site Map
SWPPP
Annual Fee
Certification
H. Additional PRD Requirements Related to Construction Type
1. Discharger in unincorporated areas of the State (not covered under an
adopted Phase I or II SUSMP requirements) and that are not a linear project
shall also submit a completed:
a. Post-Construction Water Balance Calculator (Appendix 2).
2. Dischargers who are proposing to implement ATS shall submit:
a. Complete ATS Plan in accordance with Attachment F at least 14 days
prior to the planned operation of the ATS and a paper copy shall be
available onsite during ATS operation.
2009-0009-DWQ 2 September 2, 2009
ATTACHMENT B
b. Certification proof that design done by a professional in accordance with
Attachment F.
3. Dischargers who are proposing an alternate Risk Justification:
a. Particle Size Analysis.
Exceptions to Standard PRD Requirements
Construction sites with an R value less than 5 as determined in the Risk
Assessment are not required to submit a SWPPP.
Description of PRDs
1. Notice of Intent (NOI)
2. Site Map(s) Includes:
The project's surrounding area (vicinity)
Site layout
Construction site boundaries
Drainage areas
Discharge locations
Sampling locations
Areas.of soil disturbance (temporary or permanent)
Active areas of soil disturbance (cut or fill)
Locations of all runoff BMPs
Locations of all erosion control BMPs
Locations of all sediment control BMPs
I. ATS location (if applicable)
Locations of sensitive habitats, watercourses, or other features which are
not to be disturbed
Locations of all post-construction BMPs
Locations of storage areas for waste, vehicles, service, loading/unloading
of materials, access (entrance/exits) points to construction site, fueling,
and water storage, water transfer for dust control and compaction
practices
3. SWPPP5
A site-specific SWPPP shall be developed by each discharger and shall be
submitted with the PRDs.
4. Risk Assessment
All dischargers shall use the Risk Assessment procedure as describe in the
General Permit Appendix 1.
a. The Standard Risk Assessment includes utilization of the following:
i. Receiving water Risk Assessment interactive map
2009-0009-DWQ 3 September 2, 2009
ATTACHMENT B
EPA Rainfall Erosivity Factor Calculator Website
Sediment Risk interactive map
Sediment sensitive water bodies list
b. The Site-Specific Risk Assessment includes the completion of the hand
calculated R value Risk Calculator
Post-Construction Water Balance Calculator
All dischargers subject to this requirement shall complete the Water Balance
Calculator (in Appendix 2) in accordance with the instructions.
ATS Design Document and Certification
All dischargers using ATS must submit electronically their system design (as
well as any supporting documentation) and proof that the system was
designed by a qualified ATS design professional (See Attachment F).
To obtain coverage under the General Permit PRDs must be included and completed.
If any of the required items are missing, the PRD submittal is considered incomplete
and will be rejected. Upon receipt of a complete PRD submittal, the State Water Board
will process the application package in the order received and assign a (WDID) number.
Questions?
If you have any questions on completing the PRDs please email
stormwatercwaterboards.ca.gov or call (866) 563-3107.
2009-0009-DWQ 4 September 2, 2009
ATTACHMENT D
ATTACHMENT D
RISK LEVEL 2 REQUIREMENTS
A. Effluent Standards
[These requirements are the same as those in the General Permit order.]
1. Narrative - Risk Level 2 dischargers shall comply with the narrative
effluent standards listed below:
Storm water discharges and authorized non-storm water
discharges regulated by this General Permit shall not contain a
hazardous substance equal to or in excess of reportable quantities
established in 40 C.F.R. §§ 117.3 and 302.4, unless a separate
NPDES Permit has been issued to regulate those discharges.
Dischargers shall minimize or prevent pollutants in storm water
discharges and authorized non-storm water discharges through the
use of controls, structures, and management practices that achieve
BAT for toxic and non-conventional pollutants and BCT for
conventional pollutants.
2. Numeric - Risk level 2 dischargers are subject to a pH NAL of 6.5-8.5,
and a turbidity NAL of 250 NTU.
B. Good Site Management "Housekeeping"
1. Risk Level 2 dischargers shall implement good site management (i.e.,
"housekeeping") measures for construction materials that could
potentially be a threat to water quality if discharged. At a minimum,
Risk Level 2 dischargers shall implement the following good
housekeeping measures:
Conduct an inventory of the products used and/or expected to be
used and the end products that are produced and/or expected to be
produced. This does not include materials and equipment that are
designed to be outdoors and exposed to environmental conditions
(i.e. poles, equipment pads, cabinets, conductors, insulators,
bricks, etc.).
Cover and berm loose stockpiled construction materials that are not
actively being used (i.e. soil, spoils, aggregate, fly-ash, stucco,
hydrated lime, etc.).
2009-0009-DWQ 1 September 2, 2009
ATTACHMENT D
Store chemicals in watertight containers (with appropriate
secondary containment to prevent any spillage or leakage) or in a
storage shed (completely enclosed).
Minimize exposure of construction materials to precipitation. This
does not include materials and equipment that are designed to be
outdoors and exposed to environmental conditions (i.e. poles,
equipment pads, cabinets, conductors, insulators, bricks, etc.).
Implement BMPs to prevent the off-site tracking of loose
construction and landscape materials.
2. Risk Level 2 dischargers shall implement good housekeeping
measures for waste management, which, at a minimum, shall consist
of the following:
Prevent disposal of any rinse or wash waters or materials on
impervious or pervious site surfaces or into the storm drain system.
Ensure the containment of sanitation facilities (e.g., portable toilets)
to prevent discharges of pollutants to the storm water drainage
system or receiving water.
Clean or replace sanitation facilities and inspecting them regularly
for leaks and spills.
Cover waste disposal containers at the end of every business day
and during a rain event.
Prevent discharges from waste disposal containers to the storm
water drainage system or receiving water.
Contain and securely protect stockpiled waste material from wind
and rain at all times unless actively being used.
Implement procedures that effectively address hazardous and non-
hazardous spills.
Develop a spill response and implementation element of the
SWPPP prior to commencement of construction activities. The
SWPPP shall require:
Equipment and materials for cleanup of spills shall be available
on site and that spills and leaks shall be cleaned up immediately
and disposed of properly.
2009-0009-DWQ 2 September 2, 2009
ATTACHMENT D
ii. Appropriate spill response personnel are assigned and trained.
i. Ensure the containment of concrete washout areas and other
washout areas that may contain additional pollutants so there is no
discharge into the underlying soil and onto the surrounding areas.
3. Risk Level 2 dischargers shall implement good housekeeping for
vehicle storage and maintenance, which, at a minimum, shall consist of
the following:
Prevent oil, grease, or fuel to leak in to the ground, storm drains or
surface waters.
Place all equipment or vehicles, which are to be fueled, maintained
and stored in a designated area fitted with appropriate BMPs.
Clean leaks immediately and disposing of leaked materials
properly.
4. Risk Level 2 dischargers shall implement good housekeeping for
landscape materials, which, at a minimum, shall consist of the
following:
Contain stockpiled materials such as mulches and topsoil when
they are not actively being used.
Contain all fertilizers and other landscape materials when they are
not actively being used.
Discontinue the application of any erodible landscape material
within 2 days before a forecasted rain event or during periods of
precipitation.
Apply erodible landscape material at quantities and application
rates according to manufacture recommendations or based on
written specifications by knowledgeable and experienced field
personnel.
Stack erodible landscape material on pallets and covering or
storing such materials when not being used or applied.
5. Risk Level 2 dischargers shall conduct an assessment and create a list
of potential pollutant sources and identify any areas of the site where
additional BMPs are necessary to reduce or prevent pollutants in storm
water discharges and authorized non-storm water discharges. This
potential pollutant list shall be kept with the SWPPP and shall identify
2009-0009-DWQ 3 September 2, 2009
ATTACHMENT D
all non-visible pollutants which are known, or should be known, to
occur on the construction site. At a minimum, when developing BMPs,
Risk Level 2 dischargers shall do the following:
Consider the quantity, physical characteristics (e.g., liquid, powder,
solid), and locations of each potential pollutant source handled,
produced, stored, recycled, or disposed of at the site.
Consider the degree to which pollutants associated with those
materials may be exposed to and mobilized by contact with storm
water.
Consider the direct and indirect pathways that pollutants may be
exposed to storm water or authorized non-storm water discharges.
This shall include an assessment of past spills or leaks, non-storm
water discharges, and discharges from adjoining areas.
Ensure retention of sampling, visual observation, and inspection
records.
Ensure effectiveness of existing BMPs to reduce or prevent
pollutants in storm water discharges and authorized non-storm
water discharges.
Risk Level 2 dischargers shall implement good housekeeping
measures on the construction site to control the air deposition of site
materials and from site operations. Such particulates can include, but
are not limited to, sediment, nutrients, trash, metals, bacteria, oil and
grease and organics.
Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall
document all housekeeping BMPs in the SWPPP and REAP(s) in
accordance with the nature and phase of the construction project.
Construction phases at traditional land development projects include
Grading and Land Development Phase, Streets and Utilities, or
Vertical Construction for traditional land development projects.
C. Non-Storm Water Management
Risk Level 2 dischargers shall implement measures to control all non-
storm water discharges during construction.
Risk Level 2 dischargers shall wash vehicles in such a manner as to
prevent non-storm water discharges to surface waters or MS4
drainage systems.
2009-0009-DWQ 4 September 2, 2009
ATTACHMENT D
3. Risk Level 2 dischargers shall clean streets in such a manner as to
prevent unauthorized non-storm water discharges from reaching
surface water or MS4 drainage systems.
D. Erosion Control
Risk Level 2 dischargers shall implement effective wind erosion
control.
Risk Level 2 dischargers shall provide effective soil cover for inactive'
areas and all finished slopes, open space, utility backfill, and
completed lots.
Risk Level 2 dischargers shall limit the use of plastic materials when
more sustainable, environmentally friendly alternatives exist. Where
plastic materials are deemed necessary, the discharger shall consider
the use of plastic materials resistant to solar degradation.
E. Sediment Controls
Risk Level 2 dischargers shall establish and maintain effective
perimeter controls and stabilize all construction entrances and exits to
sufficiently control erosion and sediment discharges from the site.
On sites where sediment basins are to be used, Risk Level 2
dischargers shall, at minimum, design sediment basins according to
the method provided in CASQA's Construction BMP Guidance
Handbook.
Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall
implement appropriate erosion control BMPs (runoff control and soil
stabilization) in conjunction with sediment control BMPs for areas
under active 2 construction.
Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall
apply linear sediment controls along the toe of the slope, face of the
slope, and at the grade breaks of exposed slopes to comply with sheet
flow lengths3 in accordance with Table 1.
Table I - Critical Slope/Sheet Flow Length Combinations
I Slope Percentage I Sheet flow length no(]
1 Inactive areas of construction are areas of construction activity that have been disturbed and are not
scheduled to be re-disturbed for at least 14 days.
2 Active areas of construction are areas undergoing land surface disturbance. This includes construction
activity during the preliminary stage, mass grading stage, streets and utilities stage and the vertical
construction stage.
Sheet flow length is the length that shallow, low velocity flow travels across a site.
2009-0009-DWQ 5 September 2, 2009
ATTACHMENT D
to exceed
0-25%20 feet
25-50%15 feet
Over 50% 10 feet
Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall
ensure that construction activity traffic to and from the project is limited
to entrances and exits that employ effective controls to prevent offsite
tracking of sediment.
Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall
ensure that all storm drain inlets and perimeter controls, runoff control
BMPs, and pollutant controls at entrances and exits (e.g. tire washoff
locations) are maintained and protected from activities that reduce their
effectiveness.
Additional Risk Level 2 Requirement: Risk Level 2 dischargers shall
inspect on a daily basis all immediate access roads daily. At a
minimum daily (when necessary) and prior to any rain event, the
discharger shall remove any sediment or other construction activity-
related materials that are deposited on the roads (by vacuuming or
sweeping).
Run-on and Run-off Controls
Risk Level 2 dischargers shall effectively manage all run-on, all runoff
within the site and all runoff that discharges off the site. Run-on from off
site shall be directed away from all disturbed areas or shall collectively be
in compliance with the effluent limitations in this General Permit.
Inspection, Maintenance and Repair
Risk Level 2 dischargers shall ensure that all inspection, maintenance
repair and sampling activities at the project location shall be performed
or supervised by a Qualified SWPPP Practitioner (QSP) representing
the discharger. The QSP may delegate any or all of these activities to
an employee appropriately trained to do the task(s).
Risk Level 2 dischargers shall perform weekly inspections and
observations, and at least once each 24-hour period during extended
storm events, to identify and record BMPs that need maintenance to
operate effectively, that have failed, or that could fail to operate as
intended. Inspectors shall be the QSP or be trained by the QSP.
Upon identifying failures or other shortcomings, as directed by the
QSP, Risk Level 2 dischargers shall begin implementing repairs or
2009-0009-DWQ 6 September 2, 2009
ATTACHMENT D
design changes to BMPs within 72 hours of identification and complete
the changes as soon as possible.
For each inspection required, Risk Level 2 dischargers shall complete
an inspection checklist, using a form provided by the State Water
Board or Regional Water Board or in an alternative format.
Risk Level 2 dischargers shall ensure that checklists shall remain
onsite with the SWPPP and at a minimum, shall include:
Inspection date and date the inspection report was written.
Weather information, including presence or absence of
precipitation, estimate of beginning of qualifying storm event,
duration of event, time elapsed since last storm, and approximate
amount of rainfall in inches.
Site information, including stage of construction, activities
completed, and approximate area of the site exposed.
A description of any BMPs evaluated and any deficiencies noted.
If the construction site is safely accessible during inclement
weather, list the observations of all BMPs: erosion controls,
sediment controls, chemical and waste controls, and non-storm
water controls. Otherwise, list the results of visual inspections at all
relevant outfalls, discharge points, downstream locations and any
projected maintenance activities.
Report the presence of noticeable odors or of any visible sheen on
the surface of any discharges.
Any corrective actions required, including any necessary changes
to the SWPPP and the associated implementation dates.
Photographs taken during the inspection, if any.
Inspectors name, title, and signature.
H. Rain Event Action Plan
1. Additional Risk Level 2 Requirement: The discharger shall ensure a
QSP develop a Rain Event Action Plan (REAP) 48 hours prior to any
likely precipitation event. A likely precipitation event is any weather
pattern that is forecast to have a 50% or greater probability of
producing precipitation in the project area. The discharger shall
2009-0009-DWQ 7 September 2, 2009
ATTACHMENT D
ensure a QSP obtain a printed copy of precipitation forecast
information from the National Weather Service Forecast Office (e.g., by
entering the zip code of the project's location at
hftp://www.srh.noaa.govtforecast .
2. Additional Risk Level 2 Requirement: The discharger shall ensure a
QSP develop the REAPs for all phases of construction (i.e., Grading
and Land Development, Streets and Utilities, Vertical Construction,
Final Landscaping and Site Stabilization).
3. Additional Risk Level 2 Requirement: The discharger shall ensure a
QSP ensure that the REAP include, at a minimum, the following site
information:
Site Address
Calculated Risk Level (2 or 3)
Site Storm Water Manager Information including the name,
company, and 24-hour emergency telephone number
Erosion and Sediment Control Provider information including the
name, company, and 24-hour emergency telephone number
Storm Water Sampling Agent information including the name,
company, and 24-hour emergency telephone number
4. Additional Risk Level 2 Requirement: The discharger shall ensure a
QSP include in the REAP, at a minimum, the following project phase
information:
Activities associated with each construction phase
Trades active on the construction site during each construction
phase
Trade contractor information
Suggested actions for each project phase
5. Additional Risk Level 2 Requirement: The discharger shall ensure a
QSP develop additional REAPs for project sites where construction
activities are indefinitely halted or postponed (Inactive Construction).
At a minimum, Inactive Construction REAPs must include:
Site Address
Calculated Risk Level (2 or 3)
Site Storm Water Manager Information including the name,
company, and 24-hour emergency telephone number
Erosion and Sediment Control Provider information including the
name, company, and 24-hour emergency telephone number
Storm Water Sampling Agent information including the name,
company, and 24-hour emergency telephone number
2009-0009-Df 8 September 2, 2009
ATTACHMENT D
Trades active on site during Inactive Construction
Trade contractor information
Suggested actions for inactive construction sites
Additional Risk Level 2 Requirement: The discharger shall ensure a
QSP begin implementation and make the REAP available onsite no
later than 24 hours prior to the likely precipitation event.
Additional Risk Level 2 Requirement: The discharger shall ensure a
QSP maintain onsite a paper copy of each REAP onsite in compliance
with the record retention requirements of the Special Provisions in this
General Permit.
2009-0009-DWQ 9 September 2, 2009
ATTACHMENT D
I. Risk Level 2 Monitoring and Reporting Requirements
Table 2- Summary of Monitoring Requirements
Visual Inspections Sample Collection
Quarterly Pre-storm
Risk Non- Event Daily Post Storm Receiving Baseline I REAP Level storm Storm Storm Water Water Water I BMP Discharge
Discharge I
2 X X I x x I x I
1. Construction Site Monitoring Program Requirements
Pursuant to Water Code Sections 13383 and 13267, all dischargers
subject to this General Permit shall develop and implement a
written site-specific Construction Site Monitoring Program (CSMP)
in accordance with the requirements of this Section. The CSMP
shall include all monitoring procedures and instructions, location
maps, forms, and checklists as required in this section. The CSMP
shall be developed prior to the commencement of construction
activities, and revised as necessary to reflect project revisions. The
CSMP shall be a part of the Storm Water Pollution Prevention Plan
(SWPPP), included as an appendix or separate SWPPP chapter.
Existing dischargers registered under the State Water Board Order
No. 99-08-DWQ shall make and implement necessary revisions to
their Monitoring Program to reflect the changes in this General
Permit in a timely manner, but no later than July 1, 2010. Existing
dischargers shall continue to implement their existing Monitoring
Programs in compliance with State Water Board Order No. 99-08-
DWQ until the necessary revisions are completed according to the
schedule above.
When a change of ownership occurs for all or any portion of the
construction site prior to completion or final stabilization, the new
discharger shall comply with these requirements as of the date the
ownership change occurs.
2. Objectives
The CSMP shall be developed and implemented to address the
following objectives:
2009-0009-DWQ 10 September 2, 2009
ATTACHMENT D
To demonstrate that the site is in compliance with the Discharge
Prohibitions and applicable Numeric Action Levels (NALs)/Numenc
Effluent Limitations (NELs) of this General Permit.
To determine whether non-visible pollutants are present at the
construction site and are causing or contributing to exceedances of
water quality objectives.
To determine whether immediate corrective actions, additional Best
Management Practice (BMP) implementation, or SWPPP revisions
are necessary to reduce pollutants in storm water discharges and
authorized non-storm water discharges.
To determine whether BMPs included in the SWPPP/Rain Event
Action Plan (REAP) are effective in preventing or reducing
pollutants in storm water discharges and authorized non-storm
water discharges;
3. Risk Level 2— Visual Monitoring (Inspection) Requirements for
Qualifying Rain Events
Risk Level 2 dischargers shall visually observe (inspect) storm
water discharges at all discharge locations within two business
days (48 hours) after each qualifying rain event.
Risk Level 2 dischargers shall visually observe (inspect) the
discharge of stored or contained storm water that is derived from
and discharged subsequent to a qualifying rain event producing
precipitation of 1/2 inch or more at the time of discharge. Stored or
contained storm water that will likely discharge after operating
hours due to anticipated precipitation shall be observed prior to the
discharge during operating hours.
Risk Level 2 dischargers shall conduct visual observations
(inspections) during business hours only.
Risk Level 2 dischargers shall record the time, date and rain gauge
reading of all qualifying rain events.
Within 2 business days (48 hours) prior to each qualifying rain
event, Risk Level 2 dischargers shall visually observe (inspect):
i. all storm water drainage areas to identify any spills, leaks, or
uncontrolled pollutant sources. If needed, the discharger shall
implement appropriate corrective actions.
2009-0009-D'M 11 September 2, 2009
ATTACHMENT D
all BMPs to identify whether they have been properly
implemented in accordance with the SWPPP/REAP. If needed,
the discharger shall implement appropriate corrective actions.
any storm water storage and containment areas to detect leaks
and ensure maintenance of adequate freeboard.
f. For the visual observations (inspections) described in c.i and c.iii
above, Risk Level 2 dischargers shall observe the presence or
absence of floating and suspended materials, a sheen on the
surface, discolorations, turbidity, odors, and source(s) of any
observed pollutants.
g. Within two business days (48 hours) after each qualifying rain
event, Risk Level 2 dischargers shall conduct post rain event visual
observations (inspections) to (1) identify whether BMPs were
adequately designed, implemented, and effective, and (2) identify
additional BMPs and revise the SWPPP accordingly.
h. Risk Level 2 dischargers shall maintain on-site records of all visual
observations (inspections), personnel performing the observations,
observation dates, weather conditions, locations observed, and
corrective actions taken in response to the observations.
4. Risk Level 2— Water Quality Sampling and Analysis
Risk Level 2 dischargers shall collect storm water grab samples
from sampling locations, as defined in Section 1.5. The storm water
grab sample(s) obtained shall be representative of the flow and
characteristics of the discharge.
At minimum, Risk Level 2 dischargers shall collect 3 samples per
day of the qualifying event.
Risk Level 2 dischargers shall ensure that the grab samples
collected of stored or contained storm water are from discharges
subsequent to a qualifying rain event (producing precipitation of
Y2 inch or more at the time of discharge).
Storm Water Effluent Monitoring Requirements
Risk Level 2 dischargers shall analyze their effluent samples for:
i. pH and turbidity.
2009-0009-DWQ 12 September 2, 2009
ATTACHMENT D
ii. Any additional parameters for which monitoring is required by
the Regional Water Board.
5. Risk Level 2— Storm Water Discharge Water Quality Sampling
Locations
Effluent Sampling Locations
Risk Level 2 dischargers shall perform sampling and analysis of
storm water discharges to characterize discharges associated with
construction activity from the entire project disturbed area.
Risk Level 2 dischargers shall collect effluent samples at all
discharge points where storm water is discharged off-site.
Risk Level 2 dischargers shall ensure that storm water discharge
collected and observed represent4 the effluent in each drainage
area based on visual observation of the water and upstream
conditions.
Risk Level 2 dischargers shall monitor and report site run-on from
surrounding areas if there is reason to believe run-on may
contribute to an exceedance of NALs or NELs.
Risk Level 2 dischargers who deploy an ATS on their site, or a
portion on their site, shall collect ATS effluent samples and
measurements from the discharge pipe or another location
representative of the nature of the discharge.
Risk Level 2 dischargers shall select analytical test methods from
the list provided in Table 3 below.
All storm water sample collection preservation and handling shall
be conducted in accordance with Section 1.7 "Storm Water Sample
Collection and Handling Instructions" below.
6. Risk Level 2— Visual Observation and Sample Collection
Exemptions
a. Risk Level 2 dischargers shall be prepared to collect samples and
conduct visual observation (inspections) until the minimum
requirements of Sections 1.3 and 1.4 above are completed. Risk
For example, if there has been concrete work recently in an area, or drywall scrap is exposed to the rain, a
pH sample shall be taken of drainage from the relevant work area. Similarly, if sediment laden water is
flowing through some parts of a silt fence, samples shall be taken of the sediment-laden water even if most
water flowing through the fence is dear.
2009-0009-DWQ 13 September 2, 2009
ATTACHMENT D
Level 2 dischargers are not required to physically collect samples
or conduct visual observation (inspections) under the following
conditions:
During dangerous weather conditions such as flooding and
electrical storms.
Outside of scheduled site business hours.
b. If no required samples or visual observation (inspections) are
collected due to these exceptions, Risk Level 2 dischargers shall
include an explanation in their SWPPP and in the Annual Report
documenting why the sampling or visual observation (inspections)
were not conducted.
7. Risk Level 2— Storm Water Sample Collection and Handling
Instructions
Risk Level 2 dischargers shall refer to Table 3 below for test
methods, detection limits, and reporting units.
Risk Level 2 dischargers shall ensure that testing laboratories will
receive samples within 48 hours of the physical sampling (unless
otherwise required by the laboratory), and shall use only the
sample containers provided by the laboratory to collect and store
samples.
Risk Level 2 dischargers shall designate and train personnel to
collect, maintain, and ship samples in accordance with the Surface
Water Ambient Monitoring Program's (SWAMP) 2008 Quality
Assurance Program Plan (QAPrP).5
8. Risk Level 2— Monitoring Methods
a. Risk Level 2 dischargers shall include a description of the following
items in the CSMP:
Visual observation locations, visual observation procedures, and
visual observation follow-up and tracking procedures.
Sampling locations, and sample collection and handling
procedures. This shall include detailed procedures for sample
Additional information regarding SWAMP's QAPrP and QAMP can be found at
http:/Iwww.waterboards.ca.gov/water issues/programs/swamp!.
QAPrP:http://www.waterboards.ca.gov/water issues/programs/swamp!docs!gapp/swamp ciapp master090
108a.pdf.
QAMP: httD:/Iwww.waterboards.ca.aov/water issuesløroarams/swamp/aamp.shtml.
2009-0009-DWQ 14 September 2, 2009
ATTACHMENT D
collection, storage, preservation, and shipping to the testing lab
to assure that consistent quality control and quality assurance is
maintained. Dischargers shall attach to the monitoring program
an example Chain of Custody form used when handling and
shipping samples.
iii. Identification of the analytical methods and related method
detection limits (if applicable) for each parameter required in
Section 1.4 above.
b. Risk Level 2 dischargers shall ensure that all sampling and sample
preservation are in accordance with the current edition of "Standard
Methods for the Examination of Water and Wastewater" (American
Public Health Association). All monitoring instruments and
equipment (including a discharger's own field instruments for
measuring pH and turbidity) should be calibrated and maintained in
accordance with manufacturers' specifications to ensure accurate
measurements. Risk Level 2 dischargers shall ensure that all
laboratory analyses are conducted according to test procedures
under 40 CFR Part 136, unless other test procedures have been
specified in this General Permit or by the Regional Water Board.
With the exception of field analysis conducted by the discharger for
turbidity and pH, all analyses should be sent to and conducted at a
laboratory certified for such analyses by the State Department of
Health Services. Risk Level 2 dischargers shall conduct their own
field analysis of pH and may conduct their own field analysis of
turbidity if the discharger has sufficient capability (qualified and
trained employees, properly calibrated and maintained field
instruments, etc.) to adequately perform the field analysis.
9. Risk Level 2— Analytical Methods
Risk Level 2 dischargers shall refer to Table 3 below for test
methods, detection limits, and reporting units.
pH: Risk Level 2 dischargers shall perform pH analysis on-site with
a calibrated pH meter or a pH test kit. Risk Level 2 dischargers
shall record pH monitoring results on paper and retain these
records in accordance with Section 1. 14, below.
Turbidity: Risk Level 2 dischargers shall perform turbidity analysis
using a calibrated turbidity meter (turbidimeter), either on-site or at
an accredited lab. Acceptable test methods include Standard
Method 2130 or USEPA Method 180.1. The results will be
recorded in the site log book in Nephelometric Turbidity Units
(NTU).
2009-0009-DWQ 15 September 2, 2009
ATTACHMENT D
10. Risk Level 2 - Non-Storm Water Discharge Monitoringi
Requirements
a. Visual Monitoring Requirements:
Risk Level 2 dischargers shall visually observe (inspect) each
drainage area for the presence of (or indications of prior)
unauthorized and authorized non-storm water discharges and
their sources.
Risk Level 2 dischargers shall conduct one visual observation
(inspection) quarterly in each of the following periods: January-
March, April-June, July-September, and October-December.
Visual observation (inspections) are only required during
daylight hours (sunrise to sunset).
Risk Level 2 dischargers shall ensure that visual observations
(inspections) document the presence or evidence of any non-
storm water discharge (authorized or unauthorized), pollutant
characteristics (floating and suspended material, sheen,
discoloration, turbidity, odor, etc.), and source. Risk Level 2
dischargers shall maintain on-site records indicating the
personnel performing the visual observation (inspections), the
dates and approximate time each drainage area and non-storm
water discharge was observed, and the response taken to
eliminate unauthorized non-storm water discharges and to
reduce or prevent pollutants from contacting non-storm water
discharges.
b. Effluent Sampling Locations:
Risk Level 2 dischargers shall sample effluent at all discharge
points where non-storm water and/or authorized non-storm
water is discharged off-site.
Risk Level 2 dischargers shall send all non-storm water sample
analyses to a laboratory certified for such analyses by the State
Department of Health Services.
Risk Level 2 dischargers shall monitor and report run-on from
surrounding areas if Ahere is reason to believe run-on may
contribute to an exceedance of NALs.
11: Risk Level 2— Non-Visible Pollutant Monitoring Requirements
2009-0009-DWQ 16 September 2, 2009
ATTACHMENT D
Risk Level 2 dischargers shall collect one or more samples during
any breach, malfunction, leakage, or spill observed during a visual
inspection which could result in the discharge of pollutants to
surface waters that would not be visually detectable in storm water.
Risk Level 2 dischargers shall ensure that water samples are large
enough to characterize the site conditions.
Risk Level 2 dischargers shall collect samples at all discharge
locations that can be safely accessed.
Risk Level 2 dischargers shall collect samples during the first two
hours of discharge from rain events that occur during business
hours and which generate runoff.
Risk Level 2 dischargers shall analyze samples for all non-visible
pollutant parameters (if applicable) - parameters indicating the
presence of pollutants identified in the pollutant source assessment
required (Risk Level 2 dischargers shall modify their CSMPs to
address these additional parameters in accordance with any
updated SWPPP pollutant source assessment).
Risk Level 2 dischargers shall collect a sample of storm water that
has not come in contact with the disturbed soil or the materials
stored or used on-site (uncontaminated sample) for comparison
with the discharge sample.
Risk Level 2 dischargers shall compare the uncontaminated sample
to the samples of discharge using field analysis or through
laboratory analysis.6
Risk Level 2 dischargers shall keep all field /or analytical data in the
SWPPP document.
12. Risk Level 2— Watershed Monitoring Option
Risk Level 2 dischargers who are part of a qualified regional
watershed-based monitoring program may be eligible for relief from the
requirements in Sections 1.5. The Regional Water Board may approve
proposals to substitute an acceptable watershed-based monitoring
program by determining if the watershed-based monitoring program
6 For laboratory analysis, all sampling, sample preservation, and analyses must be conducted
according to test procedures under 40 CFR Part 136. Field discharge samples shall be collected
and analyzed according to the specifications of the manufacturer of the sampling devices
employed.
2009-0009-DWQ 17 September 2, 2009
ATTACHMENT D
will provide substantially similar monitoring information in evaluating
discharger compliance with the requirements of this General Permit.
Risk Level 2— Particle Size Analysis for Project Risk Justification
Risk Level 2 dischargers justifying an alternative project risk shall
report a soil particle size analysis used to determine the RUSLE
K-Factor. ASTM D-422 (Standard Test Method for Particle-Size
Analysis of Soils), as revised, shall be used to determine the
percentages of sand, very fine sand, silt, and clay on the site.
Risk Level 2— Records
Risk Level 2 dischargers shall retain records of all storm water
monitoring information and copies of all reports (including Annual
Reports) for a period of at least three years. Risk Level 2 dischargers
shall retain all records on-site while construction is ongoing. These
records include:
The date, place, time of facility inspections, sampling, visual
observation (inspections), and/or measurements, including
precipitation.
The individual(s) who performed the facility inspections, sampling,
visual observation (inspections), and or measurements.
The date and approximate time of analyses.
The individual(s) who performed the analyses.
A summary of all analytical results from the last three years, the
method detection limits and reporting units, the analytical
techniques or methods used, and the chain of custody forms.
Rain gauge readings from site inspections;
Quality assurance/quality control records and results.
Non-storm water discharge inspections and visual observation
(inspections) and storm water discharge visual observation records
(see Sections 1.3 and 1.10 above).
Visual observation and sample collection exception records (see
Section 1.6 above).
2009-0009-DWQ 18 September 2, 2009
ATTACHMENT D
j. The records of any corrective actions and follow-up activities that
resulted from analytical results, visual observation (inspections), or
inspections.
15. Risk Level 2— NAL Exceedance Report
In the event that any effluent sample exceeds an applicable NAL,
Risk Level 2 dischargers shall electronically submit all storm event
sampling results to the State Water Board no later than 10 days
after the conclusion of the storm event. The Regional Boards have
the authority to require the submittal of an NAL Exceedance
Report.
Risk Level 2 dischargers shall certify each NAL Exceedance Report
in accordance with the Special Provisions for Construction Activity.
Risk Level 2 dischargers shall retain an electronic or paper copy of
each NAL Exceedance Report for a minimum of three years after
the date the annual report is filed.
Risk Level 2 dischargers shall include in the NAL Exceedance
Report:
The analytical method(s), method reporting unit(s), and method
detection limit(s) of each analytical parameter (analytical results
that are less than the method detection limit shall be reported as
less than the method detection limit").
The date, place, time of sampling, visual observation
(inspections), and/or measurements, including precipitation.
A description of the current BMPs associated with the effluent
sample that exceeded the NAL and the proposed corrective
actions taken.
2009-0009-DWQ 19 September 2, 2009
ATTACHMENT D
Table 3— Risk Level 2 Test Methods, Detection Limits. Reportinq Units and Applicable NALsINELs
Parameter Test Method I Discharge Min.- - Reporting Numeric Action
Protocol Type Detection Units Level
Limit
pH Field test with
calibrated lower NAL = 6.5 portable Risk Level 2 0.2 pH UflitS upper NAL = 8.5 instrument Discharges
Turbidity EPA 0180.1 Risk Level 2
and/or field test Discharges 1 NTU 250 NTU with calibrated other than
portable ATS
instrument For ATS
discharges 1 NTU I
N/A
2009-0009-DWQ 20 September 2, 2009
APPENDIX 5
APPENDIX 5:
Glossary
Active Areas of Construction
All areas subject to land surface disturbance activities related to the project
including, but not limited to, project staging areas, immediate access areas and
storage areas. All previously active areas are still considered active areas until
final stabilization is complete. [The construction activity Phases used in this
General Permit are the Preliminary Phase, Grading and Land Development
Phase, Streets and Utilities Phase, and the Vertical Construction Phase.]
Active Treatment System (ATS)
A treatment system that employs chemical coagulation, chemical flocculation, or
electrocoagulation to aid in the reduction of turbidity caused by fine suspended
sediment.
Acute Toxicity Test
A chemical stimulus severe enough to rapidly induce a negative effect; in aquatic
toxicity tests, an effect observed within 96 hours or less is considered acute.
Air Deposition
Airborne particulates from construction activities..
Approved Signatory
A person who has legal authority to sign, certify, and electronically submit Permit
Registration Documents and Notices of Termination on behalf of the Legally
Responsible Person.
Beneficial Uses
As defined in the California Water Code, beneficial uses of the waters of the state
that may be protected against quality degradation include, but are not limited to,
domestic, municipal, agricultural and industrial supply; power generation;
recreation; aesthetic enjoyment; navigation; and preservation and enhancement
of fish, wildlife, and other aquatic resources or preserves.
Best Available Technology Economically Achievable (BAT)
As defined by USEPA, BAT is a technology-based standard established by the
Clean Water Act (CWA) as the most appropriate means available on a national
basis for controlling the direct discharge of toxic and nonconventional pollutants
to navigable waters. The BAT effluent limitations guidelines, in general,
represent the best existing performance of treatment technologies that are
economically achievable within an industrial point source category or
subcategory.
Best Conventional Pollutant Control Technology (BCT)
2009-0009-DWQ 1 September 2, 2009
APPENDIX 5
As defined by USEPA, BCT is a technology-based standard for the discharge
from existing industrial point sources of conventional pollutants including
biochemical oxygen demand (BOD), total suspended sediment (TSS), fecal
coliform, pH, oil and grease.
Best Professional Judgment (BPJ)
The method used by permit writers to develop technology-based NPDES permit
conditions on a case-by-case basis using all reasonably available and relevant
data.
Best Management Practices (BMPs)
BMPs are scheduling of activities, prohibitions of practices, maintenance
procedures, and other management practices to prevent or reduce the discharge
of pollutants. BMPs also include treatment requirements, operating procedures,
and practices to control site runoff, spillage or leaks, sludge or waste disposal, or
drainage from raw material storage.
Chain of Custody (COC)
Form used to track sample handling as samples progress from sample collection
to the analytical laboratory. The COC is then used to track the resulting
analytical data from the laboratory to the client. COC forms can be obtained from
an analytical laboratory upon request.
Coagulation
The clumping of particles in a discharge to settle out impurities, often induced by
chemicals such as lime, alum, and iron salts.
Common Plan of Development
Generally a contiguous area where multiple, distinct construction activities may
be taking place at different times under one plan. A plan is generally defined as
any piece of documentation or physical demarcation that indicates that
construction activities may occur on a common plot. Such documentation could
consist of a tract map, parcel map, demolition plans, grading plans or contract
documents Any of these documents could delineate the boundaries of a
common plan area. However, broad planning documents, such as land use
master plans, conceptual master plans, or broad-based CEQA or NEPA
documents that identify potential projects for an agency or facility are not
considered common plans of development.
Daily Average Discharge
The discharge of a pollutant measured during any 24-hour period that reasonably
represents a calendar day for purposes of sampling. For pollutants with
limitations expressed in units of mass, the daily discharge is calculated as the
total mass of the pollutant discharged during the day. For pollutants with
limitations expressed in other units of measurement (e.g., concentration) the
daily discharge is calculated as the average measurement of the pollutant
2009-0009-DWQ 2 September 2, 2009
iã*I'iKf1
throughout the day (40 CFR 122.2). In the case of pH, the pH must first be
converted from a log scale.
Debris
Litter, rubble, discarded refuse, and remains of destroyed inorganic
anthropogenic waste.
Direct Discharge
A discharge that is routed directly to waters of the United States by means of a
pipe, channel, or ditch (including a municipal storm sewer system), or through
surface runoff.
Discharger
The Legally Responsible Person (see definition) or entity subject to this General
Permit.
Dose Rate (for ATS)
In exposure assessment, dose (e.g. of a chemical) per time unit (e.g. mg/day),
sometimes also called dosage.
Drainage Area
The area of land that drains water, sediment, pollutants, and dissolved materials
to a common outlet.
Effluent
Any discharge of water by a discharger either to the receiving water or beyond
the property boundary controlled by the discharger.
Effluent Limitation
Any numeric or narrative restriction imposed on quantities, discharge rates, and
concentrations of pollutants which are discharged from point sources into waters
of the United States, the waters of the contiguous zone, or the ocean.
Erosion
The process, by which soil particles are detached and transported by the actions
of wind, water, or gravity.
Erosion Control BMPs
Vegetation, such as grasses and wildflowers, and other materials, such as straw,
fiber, stabilizing emulsion, protective blankets, etc., placed to stabilize areas of
disturbed soils, reduce loss of soil due to the action of water or wind, and prevent
water pollution.
Field Measurements
Testing procedures performed in the field with portable field-testing kits or
meters.
2009-0009-DWQ 3 September 2, 2009
APPENDIX 5
Final Stabilization
All soil disturbing activities at each individual parcel within the site have been
completed in a manner consistent with the requirements in this General Permit.
First Order Stream
Stream with no tributaries.
Flocculants
Substances that interact with suspended particles and bind them together to form
flocs.
Good Housekeeping BMPs
BMPs designed to reduce or eliminate the addition of pollutants to construction
site runoff through analysis of pollutant sources, implementation of proper
handling/disposal practices, employee education, and other actions.
Grading Phase (part of the Grading and Land Development Phase)
Includes reconfiguring the topography and slope including; alluvium removals;
canyon cleanouts; rock undercuts; keyway excavations; land form grading; and
stockpiling of select matenal for capping operations.
Hydromodlfication
Hydromodification is the alteration of the hydrologic characteristics of coastal and
non-coastal waters, which in turn could cause degradation of water resources.
Hydromod ifi cation can cause excessive erosion and/or sedimentation rates,
causing excessive turbidity, channel aggradation and/or degradation.
Identified Organisms
Organisms within a sub-sample that is specifically identified and counted.
Inactive Areas of Construction
Areas of construction activity that are not active and those that have been active
and are not scheduled to be re-disturbed for at least 14 days.
Index Period
The period of time during which bioassessment samples must be collected to
produce results suitable for assessing the biological integrity of streams and
rivers. Instream communities naturally vary over the course of a year,and
sampling during the index period ensures that samples are collected during a
time frame when communities are stable so that year-to-year consistency is
obtained. The index period approach provides a cost-effective alternative to year-
round sampling. Furthermore, sampling within the appropriate index period will
yield results that are comparable to the assessment thresholds or criteria for a
given region, which are established for the same index period. Because index
2009-0009-DWQ 4 September 2, 2009
APPENDIX 5
periods differ for different parts of the state, it is essential to know the index
period for your area.
K Factor
The soil erodibility factor used in the Revised Universal Soil Loss Equation
(RUSLE). It represents the combination of detachability of the soil, runoff
potential of the soil, and the transportability of the sediment eroded from the soil.
Legally Responsible Person
The person who possesses the title of the land or the leasehold interest of a
mineral estate upon which the construction activities will occur for the regulated
site. For linear underground/overhead projects, it is in the person in charge of
the utility company, municipality, or other public or private company or agency
that owns or operates the LUP.
Likely Precipitation Event
Any weather pattern that is forecasted to have a 50% or greater chance of
producing precipitation in the project area. The discharger shall obtain likely
precipitation forecast information from the National Weather Service Forecast
Office (e.g., by entering the zip code of the project's location at
http:/Iwww. srh. noaa.qov/fo recast).
Maximum Allowable Threshold Concentration (MATC)
The allowable concentration of residual, or dissolved, coagulant/flocculant in
effluent. The MATC shall be coagulant/flocculant-specific, and based on toxicity
testing conducted by an independent, third-party laboratory. A typical MATC
would be:
The MATC is equal to the geometric mean of the NOEC (No Observed Effect
Concentration) and LOEC (Lowest Observed Effect Concentration) Acute and
Chronic toxicity results for most sensitive species determined for the specific
coagulant. The most sensitive species test shall be used to determine the
MATC.
Natural Channel Evolution
The physical trend in channel adjustments following a disturbance that causes
the river to have more energy and degrade or aggrade more sediment. Channels
have been observed to pass through 5 to 9 evolution types. Once they pass
though the suite of evolution stages, they will rest in a new state of equilibrium.
Non-Storm Water Discharges
Discharges are discharges that do not originate from precipitation events. They
can include, but are not limited to, discharges of process water, air conditioner
condensate, non-contact cooling water, vehicle wash water, sanitary wastes,
concrete washout water, paint wash water, irrigation water, or pipe testing water.
Non-Visible Pollutants
2009-0009-DWQ 5 September 2, 2009
Pollutants associated with a specific site or activity that can have a negative
impact on water quality, but cannot be seen though observation (ex: chlorine).
Such pollutants being discharged are not authorized.
Numeric Action Level (NAL)
Level is used as a warning to evaluate if best management practices are
effective and take necessary corrective actions. Not an effluent limit.
Original Sample Material
The material (i.e., macroinvertebratés, organic material, gravel, etc.) remaining
after the subsample has been removed for identification.
pH
Unit universally used to express the intensity of the acid or alkaline condition of a
water sample. The pH of natural waters tends to range between 6 and 9, with
neutral being 7. Extremes of pH can have deleterious effects on aquatic
systems.
Post-Construction BMPs
Structural and non-structural controls which detain, retain, or filter the release of
pollutants to receiving waters after final stabilization is attained.
Preliminary Phase (Pre-Construction Phase - Part of the Grading and Land
Development Phase)
Construction stage including rough grading and/or disking, clearing and grubbing
operations, or any soil disturbance prior to mass grading.
Project
Qualified SWPPP Developer
Individual who is authorized to develop and revise SWPPPs.
Qualified SWPPP Practitioner
Individual assigned responsibility for non-storm water and storm water visual
observations, sampling and analysis, and responsibility to ensure full compliance
with the permit and implementation of all elements of the SWPPP, including the
preparation of the annual compliance evaluation and the elimination of all
unauthorized discharges.
Qualifying Rain Event
Any event that produces 0.5 inches or more precipitation with a 48 hour or
greater period between rain events.
R Factor
Erosivity factor used in the Revised Universal Soil Loss Equation (RUSLE). The
R factor represents the erosivity of the climate at a particular location. An
2009-0009-DWQ 6 September 2, 2009
average annual value of R is determined from historical weather records using
erosivity values determined for individual storms. The erosivity of an individual
storm is computed as the product of the storm's total energy, which is closely
related to storm amount, and the storm's maximum 30-minute intensity.
Rain Event Action Plan (REAP)
Written document, specific for each rain event, that when implemented is
designed to protect all exposed portions of the site within 48 hours of any likely
precipitation event.
Remaining Sub sampled Material
The material (e.g., organic material, gravel, etc.) that remains after the organisms
to be identified have been removed from the subsample for identification.
(Generally, no macroinvertebrates are present in the remaining subsampled
material, but the sample needs to be checked and verified using a complete
Quality Assurance (QA) plan)
Routine Maintenance
Activities intended to maintain the original line and grade, hydraulic capacity, or
original purpose of a facility.
Runoff Control BMPs
Measures used to divert runon from offsite and runoff within the site.
Run-on
Discharges that originate offsite and flow onto the property of a separate project
site.
Revised Universal Soil Loss Equation (RUSLE)
Empirical model that calculates average annual soil loss as a function of rainfall
and runoff erosivity, soil erodibility, topography, erosion controls, and sediment
controls.
Sampling and Analysis Plan
Document that describes how the samples will be collected, under what
conditions, where and when the samples will be collected, what the sample will
be tested for, what test methods and detection limits will be used, and what
methods/procedures will be maintained to ensure the integrity of the sample
during collection, storage, shipping and testing (i.e., quality assurance/quality
control protocols).
Sediment
Solid particulate matter, both mineral and organic, that is in suspension, is being
transported, or has been moved from its site of origin by air, water, gravity, or ice
and has come to rest on the earth's surface either above or below sea level.
2009-0009-DWQ 7 September 2, 2009
FTIMMINDIEW
Sedimentation
Process of deposition of suspended matter carried by water, wastewater, or other
liquids, by gravity. It is usually accomplished by reducing the velocity of the liquid
below the point at which it can transport the suspended material.
Sediment Control BMPs
Practices that trap soil particles after they have been eroded by rain, flowing
water, or wind. They include those practices that intercept and slow or detain the
flow of storm water to allow sediment to settle and be trapped (e.g., silt fence,
sediment basin, fiber rolls, etc.).
Settleable Solids (SS)
Solid material that can be settled within a water column during a specified time
frame. It is typically tested by placing a water sample into an Imhoff settling cone
and then allowing the solids to settle by gravity for a given length of time.
Results are reported either as a volume (mL/L) or a mass (mg/L) concentration.
Sheet Flow
Flow of water that occurs overland in areas where there are no defined channels
where the water spreads out over a large area at a uniform depth.
Site
Soil Amendment
Any material that is added to the soil to change its chemical properties,
engineering properties, or erosion resistance that could become mobilized by
storm water.
Streets and Utilities Phase
Construction stage including excavation and street paving, lot grading, curbs,
gutters and sidewalks, public utilities, public water facilities including fire
hydrants, public sanitary sewer systems, storm sewer system and/or other
drainage improvements.
Structural Controls
Any structural facility designed and constructed to mitigate the adverse impacts
of storm water and urban runoff pollution
Suspended Sediment Concentration (SSC)
The measure of the concentration of suspended solid material in a water sample
by measuring the dry weight of all of the solid material from a known volume of a
collected water sample. Results are reported in mg/L.
Total Suspended Solids (TSS)
The measure of the suspended solids in a water sample includes inorganic
substances, such as soil particles and organic substances, such as algae,
2009-0009-DWQ 8 September 2, 2009
APPENDIX 5
aquatic plant/animal waste, particles related to industrial/sewage waste, etc. The
TSS test measures the concentration of suspended solids in water by measuring
the dry weight of a solid material contained in a known volume of a sub-sample
of a collected water sample. Results are reported in mg/L.
Toxicity
The adverse response(s) of organisms to chemicals or physical agents ranging
from mortality to physiological responses such as impaired reproduction or
growth anomalies.
Turbidity
The cloudiness of water quantified by the degree to which light traveling through
a water column is scattered by the suspended organic and inorganic particles it
contains. The turbidity test is reported in Nephelometric Turbidity Units (NTU) or
Jackson Turbidity Units (JTU).
Vertical Construction Phase
The Build out of structures from foundations to roofing, including rough
landscaping.
Waters of the United States
Generally refers to surface waters, as defined by the federal Environmental
Protection Agency in 40 C.F.R. § 122.2.1
Water Quality Objectives (WQO)
Water quality objectives are defined in the California Water Code as limits or
levels of water quality constituents or characteristics, which are established for
the reasonable protection of beneficial uses of water or the prevention of
nuisance within a specific area.
1 The applicalion of the definition of "waters of the United States" may be difficult to determine; there are
currently several judicial decisions that create some confusion. If a landowner is unsure whether the
discharge must be covered by this General Permit, the landowner may wish to seek legal advice.
2009-0009-DWQ 9 September 2, 2009
APPENDIX 6
APPENDIX 6:
Acronym List
ASBS Areas of Special Biological Significance
ASTM American Society of Testing and Materials; Standard Test
Method for Particle-Size Analysis of Soils
ATS Active Treatment System
BASMAA Bay Area Storm water Management Agencies Association
BAT Best Available Technology Economically Achievable
BCT Best Conventional Pollutant Control Technology
BMP Best Management Practices
BOD Biochem ical Oxygen Demand
BPJ Best Professional Judgment
CAFO Confined Animal Feeding Operation
CCR California Code of Regulations
CEQA California Environmental Quality Act
CFR Code of Federal Regulations
CGP NPDES General Permit for Storm Water Discharges
Associated with Construction Activities
CIWQS California Integrated Water Quality System
CKD Cement Kiln Dust
COC Chain of Custody
CPESC Certified Professional in Erosion and Sediment Control
CPSWQ Certified Professional in Storm Water Quality
CSMP Construction Site Monitoring Program
CTB Cement Treated Base
CTR California Toxics Rule
CWA Clean Water Act
CWC California Water Code
CWP Center for Watershed Protection
DADMAC Diallyldimethyl-ammonium chloride
DDNR Delaware Department of Natural Resources
DFG Department of Fish and Game
DHS Department of Health Services
DWQ Division of Water Quality
EC Electrical Conductivity
ELAP Environmental Laboratory Accreditation Program
EPA Environmental Protection Agency
ESA Environmentally Sensitive Area
ESC Erosion and Sediment Control
HSPF Hydrologic Simulation Program Fortran
JTU Jackson Turbidity Units
LID Low Impact Development
LOEC Lowest Observed Effect Concentration
LRP Legally Responsible Person
LU P Linear Underground/Overhead Projects
2009-0009-DWQ 1 September 2, 2009
APPENDIX 6
MATC Maximum Allowable Threshold Concentration
MDL Method Detection Limits
MRR Monitoring and Reporting Requirements
MS4 Municipal Separate Storm Sewer System
MUSLE Modified Universal Soil Loss Equation
NAL Numeric Action Level
NEL Numeric Effluent Limitation
NICET National Institute for Certification in Engineering
Technologies
NOAA National Oceanic and Atmospheric Administration
NOEC No Observed Effect Concentration
NOI Notice of Intent
NOT Notice of Termination
NPDES National Pollutant Discharge Elimination System
NRCS Natural Resources Conservation Service
NTR National Toxics Rule
NTU Nephelometric Turbidity Units
O&M Operation and Maintenance
PAC Polya luminum chloride
PAM Polyacryla mide
PASS Polya luminum chloride Silica/sulfate
POC Pollutants of Concern
POP Probability of Precipitation
POTW Publicly Owned Treatment Works
PRDs Permit Registration Documents
PWS Planning Watershed
QAMP Quality Assurance Management Plan •
QA/QC Quality Assurance/Quality Control
REAP Rain Event Action Plan
Regional Board Regional Water Quality Control Board
ROWD Report of Waste Discharge
RUSLE Revised Universal Soil Loss Equation
RW Receiv ing Water
SMARTS Storm water Multi Application Reporting and Tracking
System
SS Settleable Solids
SSC Suspended Sediment Concentration
SUSMP Standard Urban Storm Water Mitigation Plan
SW Storm Water
SWARM Storm Water Annual Report Module
SWAMP Surface Water Ambient Monitoring Program
SWMM Storm Water Management Model
SWMP Storm Water Management Program
SWPPP Storm Water Pollution Prevention Plan
TC Treatment Control
TDS Total Dissolved Solids
2009-0009-DWQ 2 September 2, 2009
APPENDIX 6
TMDL
TSS Total
USACOE
USC Uhited
USEPA
USGS
WDID Waste
WDR Waste
WLA Waste
WET Whole
WRCC
WQBEL
WQO Water
WQS Water
Total Maximum Daily Load
Suspended Solids
U.S. Army Corpsof Engineers
States Code
United States Environmental Protection Agency
United States Geological Survey
Discharge Identification Number
Discharge Requirements
Load Allocation
Effluent Toxicity
Western Regional Climate Center
Water Quality Based Effluent Limitation
Quality Objective
Quality Standard
2009-0009-DWQ 3 September 2, 2009
APPENDIX B
SUBMITTED PERMIT REGISTRATION DOCUMENTS
(TO BE INSERTED BY LEGALLY
RESPONSIBLE PERSON)
NO!, Risk Level Assessment (see Section 2.3),
Site Map, Signed Certification Statement
CITY OF OCEANSIDE
cShTE. CI . rl!- - PIVE CITY OF VISTA
CARLSBAD -'P
CI TY. OF U SAN MARCOS
,0
CITY OF ENCINITAS
VICINITY MAP
I!
PACIFIC
OCEAN
United States Office of Water EPA 833-F-00-014
Environmental Protection (4203) Revised March 2012
Agency Fact Sheet 3.11
vorEPA Stormwater Phase II
Final Rule
Construction Rainfall Erosivity
Waiver
The 1972 amendments to the Federal Water Pollution Control Act, later referred to as the Clean
Water Act (CWA), prohibit the discharge of any pollutant to navigable waters of the United States
unless the discharge is authorized by a National Pollutant Discharge Elimination System (NPDES)
permit. Because construction site stormwwater runoff can contribute significantly to water quality
problems, the Phase I Stormwater Rule imposed a requirement that all construction sites with a planned
land disturbance of 5 acres or more obtain an NPDES permit and implement stormwater runoff control
plans. Phase II extends the requirements of the stormwater program to sites of between 1 and 5 acres.
The Rainfall erosivity waiver allows permitting authorities to waive those sites that do not have adverse
water quality impacts.
What is Erosivity?
E rosiv is the term used to describe the potential for soil to wash off disturbed, devegetated earth
during storms. The potential for erosion is in part determined by the soil type and geology of the
site. For instance, dense, clay-like soils on a glacial plain will erode less readily when it rains than will
sandy soils on the side of a hill. Another important factor is the amount and force of precipitation
expected during the time the earth will be exposed. While it is impossible to predict the weather several
months in advance of construction, for many areas of the country, there are definite optimal periods,
such as a dry season when rain tends to fall less frequently and with less force. When feasible, this is
the time to disturb the earth, so that the site can be stabilized by the time the seasonal wet weather
returns. There are many other important factors to consider in determining erosivity, such as
freeze/thaw cycles and snow pack.
How Is Site Erosivity Determined?
The Universal Soil Loss Equation (USLE) was developed by the U.S. Department of Agriculture
(USDA) in the 1950s to help farmers conserve their valuable topsoil. The methodology for
determining if a site qualifies for the erosivity waiver provided in this guide is based on the USDA
Handbook 703 - Predicting Soil Erosion by Water: A Guide to Conservation Planning With the Revised
Universal Soil Loss Equation (RUSLE), dated January 1997. (Note that a more updated version of
USLE, the Revised USLE, Version 2 (RUSLE2), is available and can be used as an alternative method
for determining if a site qualifies for the erosivity waiver. Information about the RUSLE2 computer
program is provided later in this fact sheet.)
Using a computer model supported by decades' worth of soil and rainfall data, USDA established
estimates of annual erosivity values (R factors) for sites throughout the country. These R factors are
used as surrogate measures of the impact that rainfall had on erosion from a particular site. They have
been mapped using isoerodent contours, as shown in Figures 2 through 5.
USDA developed the Erosivity Index Table (El Table, provided here in Table 1), to show how the
annual erosivity factor is distributed throughout the year in two-week increments. Table I is based on
120 rainfall distribution zones for the continental U.S. Detailed instructions for calculating a project
R factor are provided later in this fact sheet.
This revised fact sheet corrects errors identified in calculating the R factor from the 2001 version, and includes
updated information about the USLE.
Stormwater Phase II
Final Rule
Fact Sheet Series
Overview
1.0- Stormwater Phase II
Proposed Rule Overview
Small MS4 Program
2.0- Small MS4 Stormwater
Program Overview
2.1 -Who's Covered? Designation
and Waivers of Regulated Small MS4s
2.2- Urbanized Areas: Definition
and Description
Minimum Control Manures
2.3- Public Education and
Outreach
2.4- Public Participation!
Involvement
2.5- Illicit Discharge Detection
and Elimination
2.6- Construction Site Runoff
Control
2.7- Post-Construction Runoff Control
2.8- Pollution Prevention/Good Housekeeping
2.9- Permitting and Reporting: The Process and Requirements
2.10- Federal and State- Operated MS4s: Program Implementation
Construction Program
3.0- Construction Program
Overview
3.1 - Construction Rainfall
Erosivity Waiver
Industrial uNo Exposure"
4.0-Conditional No Exposure Exclusion for Industrial Activity
Fact Sheet 3.1 - Construction Rainfall Erusivity Waiver Page 2
The Stonnwater Phase II rule allows permitting authorities to
waive NPDES requirements for small construction sites if the
value of the rainfall erosivity factor is less than 5 during the
period of construction activity (see § 122.26(b)(l 5)(i)(A)). Note
that the permitting authority has the option to not allow waivers
for small construction activity.
If the R factor for the period of construction calculates to less
than 5, and the permitting authority allows the use of the waiver,
the site owner may apply for a waiver under the low rainfall
erosivity provision of the applicable EPA or State NPDES
regulations. When applying, owners are encouraged to consider
other site-specific factors, such as proximity to water resources
and the sensitivity of receiving waters to sedimentation impacts.
The small construction operator must certify to the permitting
authority that the construction activity will take place during a
period when the rainfall erosivity factor is less than 5.
The start and end dates used for the construction activity will be
the initial date of disturbance and the anticipated date when the
site will have achieved final stabilization as defined by the permit,
respectively. If the construction continues beyond this period, the
operator will need to recalculate the Erosivity Index for the site
based on this new ending date (but keeping the old start date) and
either resubmit the certification form or apply for NPDES permit
coverage.
What Other Factors Can Affect Waiver
Availability and Eligibility?
EPA has established the R factor of less than 5 as the criteria
for determining waiver eligibility. However, since the intent
is to waive only those construction activities that will not
adversely impact water quality, State and Tribal permitting
authorities have considerable discretion in determining where,
when, and how to offer it. They can establish an R factor
threshold lower than 5, or they can suspend the waiver within un
area where watersheds are known to be heavily impacted by, or
sensitive to, sedimentation. They can also suspend the waiver
during certain periods of the year. They may opt not to offer the
waiver at all. NOTE: This waiver is not available to sites that will
disturb more than 5 acres of land (large construction).
What if My Site Is Not Eligible?
If your site is not eligible for a waiver, you must submit a
Notice of Intent, or whichever type of application is required,
to obtain coverage under the applicable NPDES construction
stormwater permit, and comply with its requirements. For
information about EPA's Construction General Permit (COP), see
http://www.epa.gov/nDdes/stormwater/cgp. State program
information is available at
http://cfpub.epa.ov/npdcs/contacts.cfm?program id=6&type=
STATE.
Examples
Construction started and completed in one
calendar year.
Find the Rfactor value of a construction site in Dnver, Colorado.
Assume the site will be dislurbe4from March 10 to May 10 of the
same year.
The El distribution zone is 84 (Figure 1). Referring to Table 1, the
project period will span from March 1 (from Table 1, the closest
date prior to the actual March 10 start date) to May 15 (from Table
1, the closest date after the actual May 10 end date). The difference
in values between these two dates is 9.7% (9.9 - 02 = 9.7). Since the
annual erosion index for this location is about 45 (interpolated from
Figure 2), the R factor for the scheduled construction project is 9.7%
of 45, or 4.4.
Because 4.4 is less than 5, the operator of this site would be able to
seek a waiver under the low rainfall erosivity provision.
Construction spanning two calendar years.
Find the Rfactor value for a construction site in Pittsburgh,
Pennsylvania. Assume the site will be dislurbedfron: August 1 to
April 15.
The El distribution zone is 111 (Figure 1). Referring to Table 1, the
project period will span from July 29 (from Table 1, the closest date
prior to the actual August 1 start date) to April 15. The difference in
values between July 29 and December 31 is 35% (100-65.0 =
35.0). The difference between January 1 and April 15 is 8%. The
total percentage El for this project is 43% (35 + 8 43). Since the
annual erosion index for this location is 112 (interpolated from
Figure 2), the R factor for the scheduled construction is 43% of 112,
or 48.
Since 48 is greater than 5, the operator of this site would not be able
to seek a waiver under the low rainfall erosivity provision.
How Do I Compute the R factor for My Project?
Estimate the construction start date. This is the day you
expect to begin disturbing soils, including grubbing,
stockpiling, excavating, and grading activities.
Estimate the day you expect to achieve final
stabilization, as defined by your permitting authority's
regulations or NPDES construction stormwater permit,
over all previous disturbed areas. This is your
construction end date.
Refer to Figure 1 to find your Erosivity Index (El) Zone
based on your geographic location.
I,
SWPPP Certification by QSD
This Storm Water Pollution Prevention Plan has been prepared under the direction of the
following Registered Civil Engineer and Qualified SWPPPP Developer:
May 17, 2014
Wayne W. Chang, P.E. 43568, Date
Exp. June 30, 2015
Certification Statement by Legally Responsible Person (LRP)
I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, the
information submitted is, true, accurate, and complete. I am aware that there are significant
penalties for submitting false information, including the possibility of fine and imprisonment for
knowing violations.
Signed:
Title: Director of Land Development
Printed Name: Peter H. Kim, P.E.
Date:
APPENDIX C
SWPPP AMENDMENT LOG
SWPPP Amendment No.
Project Name: Rancho Costera
Project Number: Carlsbad Tract No. 13-03
Qualified SWPPP Developer's Certification of the
Stormwater Pollution Prevention Plan Amendment
"This Stormwater Pollution Prevention Plan and attachments were prepared under my direction to
meet the requirements of the California Construction General Permit (SWRCB Order No.
2009-009-DWQ as amended by 2010-0014-DWQ). I certify that I am a Qualified SWPPP Developer
in good standing as of the date signed below."
QSD's Signature Date
QSD Name QSD Certificate Number
Title and Affiliation Telephone
Address Email
APPENDIX D
NAL EXCEEDANCE SITE EVALUATIONS
NAL EXCEEDANCE SITE EVALUATIONS
NAL Exceedance Evaluation Summary Report Rage" of -.
Project Name Rancho Costera
Project WDID
Project Location North of El Camino Real between Tamarack Avenue and Cannon Road
Date of Exceedance
NAL Daily Average 0 pH 0 Turbidity
Type of Exceedance
E] Other (specify)
O Field meter
(Sensitivity:
Measurement or 0 Lab method (specify) Analytical Method
(Reporting Limit: 11
(MDL:
Calculated Daily DpH_pH units
Average 0 Turbidity - NTU
Rain Gauge inches Measurement
Compliance Storm inches (5-year, 24-hour event) Event
Visual Observations
on Day of
Exceedance
NAL Exceedance Evaluation Summary Report Page of
Description of BMPs
in Place at Time of
Event
Initial Assessment of
Cause
Corrective Actions
Taken (deployed
after exceedance)
Additional Corrective
Actions Proposed
Report Completed By
(Print Name, Title)
Signature
APPENDIX E
SUBMITTED CHANGES TO PRDs
(DUE TO CHANGE IN OWNERSHIP OR ACREAGE)
Log of Updated PRDs
The General Permit allows for the reduction or increase of the total acreage covered under the
General Permit when a portion of the project is complete and/or conditions for termination of
coverage have been met; when ownership of a portion of the project is purchased by a different
entity; or when new acreage is added to the project.
Modified PRDs shall be filed electronically within 30 days of a reduction or increase in total
disturbed area if a change in permit covered acreage is to be sought. The SWPPP shall be
modified appropriately, with revisions and amendments recorded in Appendix C. Updated PRDs
submitted electronically via SMARTS can be found in this Appendix.
This appendix includes all of the following updated PRDs (check all that apply):
Revised Notice of Intent (NO!);
E Revised Site Map;
Revised Risk Assessment;
M New landowner's information (name, address, phone number, email address); and
F-1 New signed certification statement.
Legally Responsible Person
Signature of Legally Responsible Person or Date
Approved Signatory
Name of Legally Responsible Person or Approved Telephone Number
Signatory
APPENDIX F
CONSTRUCTION SCHEDULE
(TO BE INSERTED BY CONTRACTOR)
APPENDIX G
SPILL RESPONSE ACTIONS
Spill Response Actions
If a spill of diesel, oil, or other hazardous substance occurs, then the response will be:
Immediately notify the construction superintendent, Qualified SWPPP Practitioner, and
Legally Responsible Person.
Contain the spill if necessary, and cleanup.
Ensure no spill enters the receiving drainage systems or waterbodies.
Determine whether to notify agencies.
NOTIFY CONSTRUCTION SUPERINTENDENT AND LRP
In the event of a spill or threatened spill, regardless of size, involving a hazardous
material or waste, the event will be reported immediately to the construction
superintendent, LRP, and QSP.
Title Name Office Mobile Home
CONTAIN AND CLEANUP
On-site Spill on Asphalt or Concrete
Material Spilled Response
Oil (Gear, Contain the spill if necessary by using absorbent, or sand
Hydraulic, Motor, for larger spills.
Turbine, etc.) and Place contaminated material in a drum. If more than four
Diesel drums are needed, then contaminated material can also be
placed on plastic, asphalt, or concrete.
Label the drum, if used to store contaminated material.
Call environmental cleanup company to arrange for
disposal of contaminated material, if needed.
Anti-Freeze, Contain the spill if necessary by using absorbent, or sand
Solvent, Waste for larger spills.
Oil, Gasoline, Call environmental cleanup company to arrange for
Other disposal of contaminated material, if needed.
On-site Spill on Unpaved Surfaces
Material Spilled Response
Oil (Gear, Contain the spill if necessary by using absorbent, or sand
Hydraulic, Motor, for larger spills.
Turbine) and Dig up all stained soil plus one (1) foot. Place any
Diesel excavated soil in a drum, or on plastic, asphalt, or
concrete.
Label the drum, if used to store contaminated material.
Call environmental cleanup company to arrange for
disposal of contaminated material, if needed.
Anti-Freeze, Contain the spill if necessary by using absorbent, or sand
Solvent, Waste for larger spills.
Oil, Gasoline, Call environmental cleanup company to arrange for
Other disposal of contaminated material, if needed.
C) RECEIVING STORM DRAINS AND WATERBODIES
Do not let any spillenter the receiving drainage systems or waterbodies. Secondary
containment shall be used, where feasible, to protect against this possibility. Use
absorbent, sand, and/or whatever is available to prevent migration of the spill.
D). NOTIFY AGENCIES:
Shall be contacted as tollows:
Description of Spill Agencies to be Notified
Presents no health or safety hazard. None
Does not enter the atmosphere.
Does no harm to the environment.
Is completely contained on-site.
Completely and quickly contained and
removed.
A threatened release that creates a substantial 911
probability of harm (even though harm has not State OES - (800) 852-7550
yet occurred) and makes it reasonably necessary San Diego County DEH (619) 338-
to take immediate actions to prevent, reduce, or 2222
mitigate damages to persons, property, or the
environment. For example:
A hazardous material or waste storage
tank becomes unstable, and it begins to
tilt off center and leans to one side. The
tank is in danger of falling over and
releasing its contents to the floor or
ground.
A valve on a container or on piping has
corroded and it could fail under normal
operating conditions.
A significant release, such as:
Causes injury, evacuation, or damage to
off-site property
A release that goes off-site
A release that enters the environment
A spill that is a threat to groundwater
Requires agency assistance to contain or
clean up
Any amount of gasoline or other
flammable liquid spills near a heat source
at the plant or offsite
More than 10 gallons of gasoline spills
onto unlined area (dirt).
More than 20 gallons of gasoline spills
onto lined (asphalt, concrete) area
Exceeds 42 gallons of a petroleum
product
Increases potential for fire or explosion,
or somehow endangers employees.
911
State OES - (800) 852-7550
National Response Center - (800)
424-8802
US EPA, Region 9— (213) 244-1800
If the significant release enters into a
watercourse, also call the San Diego
Regional Water Quality Control
Board at (858) 467-2952, California
Department of Fish and Game at
(858) 467-4201
If in doubt about the extent of the threat, call all
listed agencies.
If a call is made to an agency, be prepared to discuss the following:
Name of business and identity of caller.
Chemical name and quantity released.
Location, date, and time of release.
Description of what happened.
Whether spill has been contained and cleaned up.
Whether injuries or evacuation conducted.
Whether release entered waterway or storm drain.
APPENDIX H
CASQA BMP HANDBOOK FACT SHEETS
Objectives
EC Erosion Control
SE Sediment Control
IR Tracking Control
WE Wind Erosion Control
NS NonStomiwater
Margement Control
IMM Waste Margemert and
Materials Pollution Control
Legend:
EZ Primary Objective
IN Secondary Objective
Silt Fence SE-1
Description and Purpose
A silt fence is made of a filter fabric that has been entrenched,
attached to supporting poles, and sometimes backed by a
plastic or wire mesh for support. The silt fence detains
sediment-laden water, promoting sedimentation behind the
fence.
Suitable Applications
Silt fences are suitable for perimeter control, placed below
areas where sheet flows discharge from the site. They should
also be used as interior controls below disturbed areas where
runoff may occur in the form of sheet and nil erosion. Silt
fences are generally ineffective in locations where the flow is
concentrated and are only applicable for sheet or overland
flows. Silt fences are most effective when used in combination
with erosion controls. Suitable applications include:
Along the perimeter of a project.
Below the toe or down slope of exposed and erodible slopes.
Along streams and channels.
Around temporary spoil areas and stockpiles.
Targeted Constituents
Sediment 21
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
SE-5 Fiber Rolls
SE-6 Gravel Bag Berm
SE-8 Sandbag Barrier
SE-9 Straw Bale Barrier
Below other small cleared areas. -
Limitations
Do not use in streams, channels, drain inlets, or anywhere flow
is concentrated. 8,04.
CkL"KNIA 51IJWV.%I UL
-- •t.'h U \
January 2003 California Stormwatr BMP Handbook 1 of 8
Construction
www.cabmptmndbooks.com
SE-1 Silt Fence
Do not use in locations where ponded water may cause flooding.
Do not place fence on a slope, or across any contour line. If not installed at the same
elevation throughout, silt fences will create erosion.
Filter fences will create a temporary sedimentation pond on the upstream side of the fence
and may cause temporary flooding. Fences not constructed on a level contour will be
overtopped by concentrated flow resulting in failure of the filter fence.
Improperly installed fences are subject to failure from undercutting, overlapping, or
collapsing.
- Not effective unless trenched and keyed in.
- Not intended for use as mid-slope protection on slopes greater than 4:1 (H:V).
- Do not allow water depth to exceed 1.5 ft at any point.
Implementation
General
Asilt fence is a temporary sediment barrier consisting of filter fabric stretched across and
attached to supporting posts, entrenched, and, depending upon the strength of fabric used,
supported with plastic or wire mesh fence. Silt fences trap sediment by intercepting and
detaining small amounts of sediment-laden runoff from disturbed areas in order to promote
sedimentation behind the fence.
Silt fences are preferable to straw bale barriers in many cases. Laboratory work at the Virginia
Highway and Transportation Research Council has shown that silt fences can trap a much
higher percentage of suspended sediments than can straw bales. While the failure rate of silt
fences is lower than that of straw bale barriers, there are many instances where silt fences have
been improperly installed. The following layout and installation guidance can improve
performance and should be followed:
Use principally in areas where sheet flow occurs.
Don't use in streams, channels, or anywhere flow is concentrated. Don't use silt fences to
divert flow.
Don't use below slopes subject to creep, slumping, or landslides.
Select filter fabric that retains 85% of soil by weight, based on sieve analysis, but that is not
finer than an equivalent opening size of 7o.
Install along a level contour, so water does not pond more than 1.5 ft at any point along the
silt fence.
The maximum length of slope draining to any point along the silt fence should be 200 ft or
less.
The maximum slope perpendicular to the fence line should be i:i.
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Silt Fence SE-1
Provide sufficient room for runoff to pond behind the fence and to allow sediment removal
equipment to pass between the silt fence and toes of slopes or other obstructions. About
1200 ft2 of ponding area should be provided for every acre draining to the fence.
Turn the ends of the filter fence uphill to prevent storinwater from flowing around the fence.
Leave an undisturbed or stabilized area immediately down slope from the fence where
feasible.
Silt fences should remain in place until the disturbed area is permanently stabilized.
Design and Layout
Selection of a filter fabric is based on soil conditions at the construction site (which affect the
equivalent opening size (EOS) fabric specification) and characteristics of the support fence
(which affect the choice of tensile strength). The designer should specify a filter fabric that
retains the soil found on the construction site yet that it has openings large enough to permit
drainage and prevent clogging. The following criteria is recommended for selection of the
equivalent opening size:
If 50 percent or less of the soil, by weigh; will pass the U.S. Standard Sieve No. 200,
select the EOS to retain 85 % of the soil. The EOS should not be finer than EOS 70.
For all other soil types, the EOS should be no larger than the openings in the U.S.
Standard Sieve No. 70 except where direct discharge to a stream, lake, or wetland
will occur, then the EOS should be no larger than Standard Sieve No. ioo.
To reduce the chance of clogging, it is preferable to specify a fabric with openings as large as
allowed by the criteria. No fabric should be specified with an EOS smaller than U.S. Standard
Sieve No. 100. If 85% or more of a soil, by weight, passes through the openings in a No. 200
sieve, filter fabric should not be used. Most of the particles in such a soil would not be retained
if the EOS was too large and they would clog the fabric quickly if the EOS were small enough to
capture the soil.
The fence should be supported by a plastic or wire mesh if the fabric selected does not have
sufficient strength and bursting strength characteristics for the planned application (as
recommended by the fabric manufacturer). Filter fabric material should contain ultraviolet
inhibitors and stabilizers to provide a minimum of six months of expected usable construction
life at a temperature range of 0 OF to 120 OF.
Layout in accordance with attached figures.
For slopes steeper than 2:1 (H:V) and that contain a high number of rocks or large dirt clods
that tend to dislodge, it may be necessary to install additional protection immediately
adjacent to the bottom of the slope, prior to installing silt fence. Additional protection may
be a chain link fence or a cable fence.
For slopes adjacent to sensitive receiving waters or Environmentally Sensitive Areas (ESAs),
silt fence should be used in conjunction with erosion control BMPs.
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SE-i Silt Fence
Mate?iais
Silt fence fabric should be woven polypropylene with a minimum width of 36 in. and a
minimum tensile strength of ioo lb force. The fabric should conform to the requirements in
ASTM designation D4632 and should have an integral reinforcement layer. The
reinforcement layer should be a polypropylene, or equivalent, net provided by the
manufacturer. The permittivity of the fabric should be between o.i sec-' and 0.15 sec in
conformance with the requirements in ASTM designation D4491.
Wood stakes should be commercial quality lumber of the size and shape shown on the plans.
Each stake should be free from decay, splits or cracks longer than the thickness of the stake
or other defects that would weaken the stakes and cause the stakes to be structurally
unsuitable.
Staples used to fasten the fence fabric to the stakes should be not less than 1.75 in. long and
should be fabricated from 15 gauge or heavier wire. The wire used to fasten the tops of the
stakes together whenjoining two sections offence should be 9 gauge or heavier wire.
Galvanizing of the fastening wire will not be required.
There are new products that may use prefabricated plastic holders for the silt fence and use
bar reinforcement instead of wood stakes. If bar reinforcement is used in lieu of wood
stakes, use number four or greater bar. Provide end protection for any exposed bar
reinforcement.
Installation Guidelines
Silt fences are to be constructed on a level contour. Sufficient area should exist behind the fence
fbr ponding to occur without flooding or overtopping the fence.
A trench should be excavated approximately 6 in wide and 6 in. deep along the line the
proposed silt fence.
Bottom of the silt fence should be keyed-in a minimum of 12 in.
Posts should be spaced a maximum of 6 ft apart and driven securely into the ground a
minimum of 18 in. or 12 in. below the bottom of the trench.
When standard strength filter fabric is used, a plastic or wire mesh support fence should be
fastened securely to the upsiope side of posts using heavy—duty wire staples at least 1 in.
long. The mesh should extend into the trench. When extra-strength filter fabric and closer
post spacing are used, the mesh support fence may be eliminated. Filter fabric should be
purchased in a long roll, then cut to the length of the barrier. Whenjoints are necessary,
filter cloth should be spliced together only at a support post, with aminimuin 6 in. overlap
and both ends securely fastened to the post.
The trench should be backfllled with compacted native material.
Construct silt fences with a setback of at least 3 ft from the toe of a slope. Where a silt fence
is determined to be not practicable due to specific site conditions, the silt fence may be
constructed at the toe of the slope, but should be constructed as far from the toe of the slope
as practicable. Silt fences close to the toe of the slope will be less effective and difficult to
maintain.
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Silt Fence SE-1
Construct the length of each reach so that the change in base elevation along the reach does
not exceed 1/3 the height of the barrier; in no case should the reach exceed 500 ft.
Costs
Average annual cost for installation and maintenance (assumes 6 month useful life): $ per
lineal foot ($850 per drainage acre). Range of cost is $3.50 - $9.10 per lineal foot.
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
Repair undercut silt fences.
Repair or replace split, torn, slumping, or weathered fabric. The lifespan of silt fence fabric
is generally 5 to 8 months.
Silt fences that are damaged and become unsuitable for the intended purpose should be
removed from the site of work, disposed of; and replaced with new silt fence barriers.
Sediment that accumulates in the BMP must be periodically removed in order to maintain
BMP effectiveness. Sediment should be removed when the sediment accumulation reaches
one-third of the barrier height. Sediment removed during maintenance maybe incorporated
into earthwork on the site or disposed at an appropriate location.
Silt fences should be left in place until the upstream area is permanently stabilized. Until
then, the silt fence must be inspected and maintained.
Holes, depressions, or other ground disturbance caused by the removal of the silt fences
should be backfilled and repaired.
References
Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area
Governments, May 1995.
National Management Measures to Control Nonpoint Source Pollution from Urban Areas,
United States Environmental Protection Agency, 2002.
Proposed Guidance Speci1'ing Management Measures for Sources of Nonpoint Pollution in
Coastal Waters, Work Group-Working Paper, USEPA, April 1992.
Sedimentation and Erosion Control Practices, and Inventory of Current Practices (Draft),
IJESPA, 1990.
Southeastern Wisconsin Regional Planning Commission (SWRPC). Costs of Urban Nonpoint
Source Water Pollution Control Measures. Technical Report No. 31. Southeastern Wisconsin
Regional Planning Commission, Waukesha, WI. 1991
Stonnwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
January 2003 California Stormwat2r BMP Handbook 5 of 8
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SE-i Silt Fence
Stormwater Management Manual for The Puget Sound Basin, Washington State Department of
Ecology, Public Review Draft, 1991.
U.S. Environmental Protection Agency (USEPA). Stormwater Management for Industrial
Activities: Developing Pollution Prevention Plans and Best Management Practices. U.S.
Environmental Protection Agency, Office of Water, Washington, DC, 1992.
Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of
Management Practices, Tahoe Regional Planning Agency, November 1988.
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Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
NS NonStormwater
Management Control
WM Waste Management and
Materials PonCorflol
Legend:
2 Primary Objective
IN Secondary Objective
Targeted Constituents
Sediment L1
Niltiente
Trash
Metals
Bacteria
Oil and Greise
Organics
Potential Alternatives
SE-2 Sediment Basin ffor lager
areas)
Sediment Trap SE-3
S. •S '•" • . • ;.S4_5S.% S.. *
---------------
Description and Purpose
A sediment trap is a containment area where sediment-laden
runoff is temporarily detained under quiescent conditions,
allowing sediment to settle out or before the runoff is
discharged. Sediment traps are formed by excavating or
constructing an earthen embankment across a waterway or low
drainage area.
Suitable Applications
Sediment traps should be considered for use:
At the perimeter of the site at locations where sediment-
laden runoff is discharged offsite.
At multiple locations within the project site where sediment
control is needed.
Around or upsiope from storm drain inlet protection
measures.
u Sediment traps may be used on construction projects where
the drainage area is less than 5 acres. Traps would be
placed where sediment-laden stormwater may enter a storm
drain or watercourse. SE-2, Sediment Basins, must be used
for drainage areas greater than 5 acres.
Asa supplemental control, sediment traps provide additional
protection for a water body or fbr reducing sediment before it
enters a drainage system.
CAIi.fl1?4W.TR-QSj.JtV Acac
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SE-3 Sediment Trap
Limitations
Requires large surface areas to permit infiltration and settling of sediment.
Not appropriate for drainage areas greater than 5 acres.
Only removes large and medium sized particles and requires upstream erosion control.
Attractive and dangerous to children, requiring protective fencing.
Conducive to vector production.
Should not be located in live streams.
Implementation
Design
A sediment trap is a small temporary ponding area, usually with a gravel outlet, formed by
excavation or by construction of an earthen embankment. Its purpose is to collect and store
sediment from sites cleared or graded during construction. It is intended for use on small
drainage areas with no unusual drainage features and projected for a quick build-out time. It
should help in removing coarse sediment from runoff. The trap is a temporary measure with a
design life of approximately six months to one year and is to be maintained until the site area is
permanently protected against erosion by vegetation and/or structures.
Sediment traps should be used only for small drainage areas. If the contributing drainage area
is greater than 5 acres, refer to SE-2, Sediment Basins, or subdivide the catchment area into
smaller drainage basins.
Sediment usually must be removed from the trap after each rainfall event. The SWPPP should
detail how this sediment is to be disposed of such as in fill areas onsite, or removal to an
approved offsite dump. Sediment traps used as perimeter controls should be installed before
any land disturbance takes place in the drainage area.
Sediment traps are usually small enough that a failure of the structure would not result in a loss
of life, damage to home or buildings, or interruption in the use of public roads or utilities.
However, sediment traps are attractive to children and can be dangerous. The following
recommendations should be implemented to reduce risks:
Install continuous fencing around the sediment trap or pond. Consult local ordinances
regarding requirements for maintaining health and safety.
Restrict basin side slopes to 3:1 or flatter.
Sediment trap size depends on the type of soil, size of the drainage area, and desired sediment
removal efficiency (see SE-2, Sediment Basin). As a rule of thumb, the larger the basin volume
the greater the sediment removal efficiency. Sizing criteria are typically established under the
local grading ordinance or equivalent. The runoff volume from a 2-year storm is a common
design criteria for a sediment trap. The sizing criteria below assume that this runoff volume is
0.042 acre-ft/acre (0.5 in. of runoff). While the climatic, topographic, and soil type extremes
make it difficult to establish a statewide standard, the following criteria should trap moderate to
high amounts of sediment in most areas of California:
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Sediment Trap SE-3
Locate sediment traps as near as practical to areas producing the sediment.
Trap should be situated according to the following criteria: (i) by excavating a suitable area
or where a low embankment can be constructed across a swale, (2) where failure would not
cause loss of life or property damage, and () to provide access for maintenance, including
sediment removal and sediment stockpiling in a protected area.
Trap should be sized to accommodate a settling zone and sediment storage zone with
recommended minimum volumes of 67 yd3/acre and .33 yd3/acre of contributing drainage
area, respectively, based on 0.5 in. of runoff volume over a 24-hour period. In many cases,
the size of an individual trap is limited by available space. Multiple traps or additional
volume may be required to accommodate specific rainfall, soil, and site conditions.
Traps with an impounding levee greater than 4.5 ft tall, measured from the lowest point to
the impounding area to the highest point of the levee, and traps capable of impounding more
than 35,000 fta, should be designed by a Registered Civil Engineer. The design should
include maintenance requirements, including sediment and vegetation removal, to ensure
continuous function of the trap outlet and bypass structures.
The outlet pipe or open spillway must be designed to convey anticipated peak flows.
Use rock or vegetation to protect the trap outlets against erosion.
Fencing should be provided to prevent unauthorized entry.
Installation
Sediment traps can be constructed by excavating a depression in the ground or creating an
impoundment with a small embankment Sediment traps should be installed outside the area
being graded and should be built prior to the start of the grading activities or removal of
vegetation. To minimize the area disturbed by them, sediment traps should be installed in
natural depressions or in small swales or drainage ways. The following steps must be followed
during installation.
The area under the embankment must be cleared, grubbed, and stripped of any vegetation
and root mat. The pool area should be cleared.
The fill material for the embankment must be free of roots or other woody vegetation as well
as oversized stones, rocks, organic material, or other objectionable material. The
embankment may be compacted by traversing with equipment while it is being constructed.
All cut-and-fill slopes should be :i or flatter.
When a riser is used, all pipe joints must be watertight.
When a riser is used, at least the top two-thirds of the riser should be perforated with 0.5 in.
diameter holes spaced 8 in. vertically and 10 to 12 in. horizontally. See SE-2, Sediment
Basin.
When an earth or stone outlet is used, the outlet crest elevation should be at least i ft below
the top of the embankment.
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SE-3 Sediment Trap
When crushed stone outlet is used, the crushed stone used in the outlet should meet
AASHTO M43, size No. 2 or 24, or its equivalent such as MSHA No. 2. Gravel meeting the
above gradation may be used if crushed stone is not available.
Costs
Average annual cost per installation and maintenance (18 month useful life) is $0.73 per ft3
($1,300 per drainage acre). Maintenance costs are approximately 20% of installation costs.
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
Inspect outlet area for erosion and stabilize if required.
Inspect trap banks for seepage and structural soundness, repair as needed.
Inspect outlet structure and spillway for any damage or obstructions. Repair damage and
remove obstructions as needed.
Inspect fencing for damage and repair as needed.
Inspect the sediment trap for area of standing water during every visit. Corrective measures
should be taken if the BMP does not dewater completely in 72 hours or less to prevent vector
production
Sediment that accumulates in the BMP must be periodically removed in order to maintain
BMP effectiveness. Sediment should be removed when the sediment accumulation reaches
one-third of the trap capacity. Sediment removed during maintenance may be incorporated
into earthwork on the site or disposed of at an appropriate location.
Remove vegetation from the sediment trap when first detected to prevent pools of standing
water and subsequent vector production.
BMPs that require dewate ring shall be continuously attended while dewatering takes place.
Dewateririg BMPs shall be implemented at all times during dewatering activities.
References
Brown, W., and T. Schueler. The Economics of Stormwater BMPs in the Mid-Atlantic Region
Prepared for Chesapeake Research Consortium, Edgewater, MD, by the Center for Watershed
Protection, Ellicott City, MD, 1997.
Draft - Sedimentation and Erosion Control, an Inventory of Current Practices, USEPA, April
1990.
Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area
Governments, May 1995.
Metzger, ME., D.F. Messer, C.L. Beitia, C.M. Myers, and V.L Kramer, The Dark Side of
Storrnwater Runoff Management: Disease Vectors Associated with Structural BMPs, 2002.
401 6 -- --California Stormwathr BMP Handbook January 2003
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Sediment Trap SE-3
National Management Measures to Control Nonpoint Source Pollution from Urban Areas,
United States Environmental Protection Agency, 2002.
Proposed Guidance Speciiring Management Measures for Sources of Nonpomt Pollution in
Coastal Waters, Work Group-Working Paper, USEPA, April1992.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management Manual for The Puget Sound Basin, Washington State Department of
Ecology, Public Review Draft 1991.
U.S. Environmental Protection Agency (USEPA). Guidance Specifying Management Measures
for Nonpoint Pollution in Coastal Waters. EPA 840-B-9-002. U.S. Environmental Protection
Agency, Office of Water, Washington, DC, 1993.
Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of
Management Practices, Tahoe Regional Planning Agency, November 1988.
January 2003 California StormwalEr BMP Handbook 5of6
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Objectives
EC Erosion Control
SE Sediment Control
T Tracking Control
WE Wind Erosion Control
NS NorStormwater
Management Control
WM Waste Management and
Matedats Pollution Control
Legend:
FJ Primary Objective
IN Secondary Objective
Check Dams SE-4
Description and Purpose
A check dam is a small barrier constructed of rock, gravel bags,
sandbags, fiber rolls, or reusable products, placed across a
constructed swale or drainage ditch. Check dams reduce the
effective slope of the channel, thereby reducing the velocity of
flowing water, allowing sediment to settle and reducing erosion.
Suitable Applications
Check dams may be appropriate in the following situations:
. To promote sedimentation behind the dam.
To prevent erosion by reducing the velocity of channel flow
in small intermittent channels and temporary swales.
In small open channels that drain 10 acres or less.
In steep channels where stormwater runoff velocities
exceed 5 ft/s.
During the establishment of grass linings in drainage
ditches or channels.
In temporary ditches where the short length of service does
not warrant establishment of erosion-resistant linings.
Targeted Constituents
Sediment I1
Nutilents
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
SE-5 Fiber Rolls
SE-6 Gravel Bag Berm
SE-8 Sandbag Barrier
Limitations
Not to be used in live streams or in channels with extended S
base flows.
CALTMNIA SMPUNAVATMI.I. (J.3D IT1t
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SE-4 Check Dams
Not appropriate in channels that drain areas greater than 10 acres.
Not appropriate in channels that are already grass-lined unless erosion is expected, as
installation may damage vegetation.
Require extensive mpintenance following high velocity flows.
Promotes sediment trapping which can be re-suspended during subsequent storms or
removal of the check dam.
Implementation
General
Check dams reduce the effective slope and create small pools in swales and ditches that drain 10
acres or less. Reduced slopes reduce the velocity of stormwater flows, thus reducing erosion of
the swale or ditch and promoting sedimentation. Use of check dams for sedimentation will
likely result in little net removal of sediment because of the small detention time and probable
scour during longer storms. Using a series of check dams will generally increase their
effectiveness. A sediment trap (SE-3) may be placed immediately upstream of the check dam to
increase sediment removal efficiency.
Design and Layout
Check dams work by decreasing the effective slope in ditches and swales. An important
consequence of the reduced slope is a reduction in capacity of the ditch or swale. This reduction
in capacity must be considered when using this BMP, as reduced capacity can result in
overtopping of the ditch or swale and resultant consequences. In some cases, such as a
"permanent!' ditch or swale being constructed early and used as a "temporary" conveyance for
construction flows, the ditch or swale may have sufficient capacity such that the temporary
reduction in capacity due to check dams is acceptable. When check dams reduce capacities
beyond acceptable limits, there are several options:
Don't use check dams. Consider alternative BMPs.
Increase the size of the ditch or swale to restore capacity.
Maximum slope and velocity reduction is achieved when the toe of the upstream dam is at the
same elevation as the top of the downstream dam. The center section of the dam should be
lower than the edge sections so that the check dam will direct flows to the center of the ditch or
swale.
Check dams are usually constructed of rock, gravel bags, sandbags and fiber rolls. A number of
products manufactured specifically for use as check dams are also being used, and some of these
products can be removed and reused. Check dams can also be constructed of logs or lumber,
and have the advantage of a longer lifespan when compared to gravel bags, sandbags, and fiber
rolls. Straw bales can also be used for check dams and can work if correctly installed; but in
practice, straw bale check dams have a high failure rate. Check dams should not be constructed
from straw bales or silt fences, since concentrated flows quickly wash out these materials.
Rock check dams are usually constructed of 8 to 12 in. rock. The rock is placed either by hand or
mechanically, but never just dumped into the channel. The dam must completely span the ditch
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Check Dams SE-4
or swale to prevent washout. The rock used must be large enough to stay in place given the
expected design flow through the channel.
Log check dams are usually constructed of 4 to 6 in. diameter logs. The logs should be
embedded into the soil at least 18 in. Logs can be bolted or wired to vertical support logs that
have been driven or buried into the soil.
Gravel bag and sandbag check dams are constructed by stacking bags across the ditch or swale,
shaped as shown in the drawings at the end of this fact sheet
Manufactured products should be installed in accordance with the manufacturer's instructions.
If grass is planted to stabilize the ditch or swale, the check dam should be removed when the
grass has matured (unless the slope of the swales is greater than 4916).
The following guidance should be followed for the design and layout of check dams:
Install the first check dam approximately 16 ft from the outfall device and at regular
intervals based on slope gradient and soil type.
Check dams should be placed at a distance and height to allow small pools to form between
each check dam.
Backwater from a downstream check dam should reach the toes of the upstream check dam.
A sediment trap provided immediately upstream of the check dam will help capture
sediment. Due to the potential for this sediment to be resuspended in subsequent storms,
the sediment trap must be cleaned following each storm event.
High flows (typically a 2-year storm or larger) should safely flow over the check dam without
an increase in upstream flooding or damage to the check dam.
Where grass is used to line ditches, check dams should be removed when grass has matured
sufficiently to protect the ditch or swale.
Gravel bags may be used as check dams with the following specifications:
Materials
Gravel bags used for check dams should conform to the requirements of SE-6, Gravel Bag
Bemis. Sandbags used for check dams should conform to SE-8, Sandbag Barrier. Fiber rolls
used for check dams should conform to SE-5, Fiber Rolls. Straw bales used for check dams
should conform to SE-g, Straw Bale Barrier.
Installation
Rock should be placed individually by hand or by mechanical methods (no dumping of rock)
to achieve complete ditch or swale coverage.
Tightly abut bags and stack according to detail shown in the figure at the end of this section.
Gravel bags and sandbags should not be stacked any higher than 3 ft.
Fiber rolls and straw bales must be trenched in and firmly staked in place.
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SE-4 Check Dams
Costs
Cost consists of only installation costs if materials are readily available. If material must be
imported, costs may increase. For material costs, see SE-5, SE-6, SE-8 and SE-9.
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
Replace missing rock, bags, bales, etc. Replace bags or bales that have degraded or have
become damaged.
If the check dam is used as a sediment capture device, sediment that accumulates in the
BMP must be periodically removed in order to maintain BMP effectiveness. Sediment
should be removed when the sediment accumulation reaches one-third of the barrier height.
Sediment removed during maintenance may be incorporated into earthwork on the site or
disposed at an appropriate location.
If the check dam is used as a grade control structure, sediment removal is not required as
long as the system continues to control the grade.
Remove accumulated sediment prior to permanent seeding or soil stabilization.
Remove check dam and accumulated sediment when check dams are no longer needed.
References
Draft - Sedimentation and Erosion Control, and Inventory of Current Practices, IJSEPA, April
1990.
Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area
Governments, May 1995.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75,
Washington State Department of Ecology, February 1992.
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8" to 12"
diamet
LI)
Check Dams SE-4
ELEVATION
TYPICAL ROCK CHECK DAM SECTION
ROCK CHECK DAM
NOT TO SCALE
GRAVEL BAG CHECK DAM ELEVATION
NOT TO SCALE
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SE-5
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
NS NonStomiwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
EZ Primary Objective
IN Secondary Objective
Targeted Constituents
Sediment l?1
NLMents
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
SE-1 Sit Fence
SE-6 Gravel Bag Berm
SE-8 Sandbag Barrier
SE-9 Straw Bale Barrier
Fiber Rolls
Description and Purpose
A fiber roll consists of straw, flax, or other simile r materials
bound into a tight tubular roll. When fiber rolls are placed at
the toe and on the face of slopes, they intercept runoff; reduce
its flow velocity, release the runoff as sheet flow, and provide
removal of sediment from the runoff. By interrupting the
length of a slope, fiber rolls can also reduce erosion.
Suitable Applications
Fiber rolls may be suitable:
Along the toe, top, face, and at grade breaks of exposed and
erodible slopes to shorten slope length and spread runoff as
sheet flow
At the end of a downward slope where it transitions to a
steeper slope
Along the perimeter of a project
'. As check dams in unlined ditches
Down-slope of exposed soil areas
Around temporary stockpiles
Limitations
Fiber rolls are not effective unless trenched
C1 TrfltAwvEfl A. t •,
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SE-5 Fiber Rolls
Fiber rolls at the toe of slopes greater than 5:1 (H:V) should be a minimum of 20 in.
diameter or installations achieving the same protection (i.e. stacked smaller diameter fiber
rolls, etc.).
Difficult to move once saturated.
If not properly staked and trenched in, fiber rolls could be transported by high flows.
Fiber rolls have a very limited sediment capture zone.
Fiber rolls should not be used on slopes subject to creep, slumping, or landslide.
Implementation
Fiber Roll Materials
Fiber rolls should be either prefabricated rolls or rolled tubes of erosion control blanket.
Assembly ofField Rolled Fiber Roll
Roll length of erosion control blanket into a tube of minimum 8 in. diameter.
Bind roll at each end and every 4 ft along length of roll with jute-type twine.
Installation
. Locate fiber rolls on level contours spaced as follows:
- Slope inclination of :i (H:V)or flatter: Fiber rolls should be placed atamaximum
interval of 20 ft.
- Slope inclination between :i and :i (H:V): Fiber Rolls should be placed at a maximum
interval of 15 ft. (a closer spacing is more effective).
- Slope inclination :i (H:V) or greater: Fiber Rolls should be placed at a maximum
interval of 10 ft. (a closer spacing is more effective).
Turn the ends of the fiber roll up slope to prevent runoff from going around the roll.
Stake fiber rolls into a 2 to 4 in. deep trench with a width equal to the diameter of the fiber
roll.
- Drive stakes at the end of each fiber roll and spaced 4 ft maximum on center.
- Use wood stakes with a nominal classification of 0.75 by 0.75 in. and minimum length of
24 in.
• If more than one fiber roll is placed in a row, the rolls should be overlapped, not abutted.
Removal
Fiber rolls are typically left in place.
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Fiber Rolls SE-5
If fiber rolls are removed, collect and dispose of sediment accumulation, and fill and
compact holes, trenches, depressions or any other ground disturbance to blend with
adjacent ground.
Costs
Material costs for fiber rolls range from $20 - $30 per 25 ft roll.
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
Repair or replace split; torn, unraveling, or slumping fiber rolls.
If the fiber roll is used as a sediment capture device, or as an erosion control device to
maintain sheet flows, sediment that accumulates in the BMP must be periodically removed
in order to maintain BMP effectiveness. Sediment should be removed when sediment
accumulation reaches one-half the designated sediment storage depth, usually one-half the
distance between the top of the fiber roll and the adjacent ground surface. Sediment
removed during maintenance maybe incorporated into earthwork on the site of disposed at
an appropriate location.
If fiber rolls are used for erosion control, such as in a mini check dam, sediment removal
should not be required as long as the system continues to control the grade. Sediment
control BMPs will likely be required in conjunction with this type of application.
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
January 2003 California StormwatEr BMP Handbook 3 of 4
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SE-5 Fiber Rolls
IV
-V
IV
I*- Note:
Install fiber roll
-
along a level contour.
IV -V
31 31
3'
Fiber rolls ,
'V 31 -V 3'
31 *
Vertical spacing
measured along the
face of the slope
varies between
10' and 20'
Install a fiber roll near
slope where it transitions
into a steeper slope
TYPICAL FIBER ROLL INSTALLATION
Fiber roll
slope 8" nun
vQf es
3/4" x 3/4"
wood stokes
max 4'
spacing
ENTRENCHMENT DETAIL
N.T.S.
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Gravel Bag Berm SE-6
- Objectives
EC Erosion Control go
SE Sediment Control 10
TR Tracking Control
WE Wind Erosion Control
NS NonStomiwater
Management Control
WM Waste Management and
Mates Pollution Control
Legend:
0 Primary Objective
IN Secondary Objective
Description and Purpose
A gravel bag berm is a series of gravel-filled bags placed on a
level contour to intercept sheet flows. Gravel bags pond sheet
flow runoff, allowing sediment to settle out, and release runoff
slowly as sheet flows, preventing erosion.
Suitable Applications
Gravel bag berms may be suitable:
As a linear sediment control measure:
- Below the toe of slopes and erodible slopes
- As sediment traps at culvert/pipe outlets
- Below other small cleared areas
- Along the perimeter of a site
- Down slope of exposed soil areas
- Around temporary stockpiles and spoil areas
- Parallel to a roadway to keep sediment off paved areas.
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
SE-1 Silt Fence
SE-5 Fiber Roll
SE-6 Sandbag Barrier
SE-9 Straw Bale Barrier
- Along streams and channels
. As linear erosion control measure:
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SE-6 Gravel Bag Berm
- Along the face and at grade breaks of exposed and erodible slopes to shorten slope length
and spread runoff as sheet flow
- At the top of slopes to divert runoff away from disturbed slopes
- As check dams across mildly sloped construction roads
Limitations
Gravel berms may be difficult to remove.
Removal problems limit their usefulness in landscaped areas.
Gravel bag berm may not be appropriate for drainage areas greater than 5 acres.
Runoff will pond upstream of the filter, possibly causing flooding if sufficient space does not
exist
Degraded gravel bags may rupture when removed, spilling contents.
Installation can be labor intensive.
Berms may have limited durability for long-term projects.
When used to detain concentrated flows, maintenance requirements increase.
Implementation
General
A gravel bag berm consists of a row of open graded gravel—filled bags placed on a level contour.
When appropriately placed, a gravel bag berm intercepts and slows sheet flow runog causing
temporary ponding. The temporary ponding provides quiescent conditions allowing sediment
to settle. The open graded gravel in the bags is porous, which allows the ponded runoff to flow
slowly through the bags, releasing the runoff as sheet flows. Gravel bag berms also interrupt the
slope length and thereby reduce erosion by reducing the tendency of sheet flows to concentrate
into rivulets, which erode rills, and ultimately gullies, into disturbed, sloped soils. Gravel bag
berms are similar to sand bag barriers, but are more porous.
Design and Layout
Locate gravel bag berms on level contours.
- Slopes between 20:1 and 2:1 (H: V): Gravel bags should be placed at a maximum interval
of 50 ft (a closer spacing is more effective), with the first row near the slope toe.
- Slopes 2:1 (H:V) or steeper: Gravel bags should be placed at a maximum interval of 25 ft
(a closer spacing is more effective), with the first row placed the slope toe.
Turn the ends of the gravel bag barriers up slope to prevent runoff from going around the
berm.
Allow sufficient space up slope from the gravel bag berm to allow ponding, and to provide
room for sediment storage.
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Gravel Bag Berm SE-6
For installation near the toe of the slope, consider moving the gravel bag barriers away from
the slope toe to facilitate cleaning. To prevent flows behind the barrier, bags can be placed
perpendicular to a berm to serve as cross barriers.
Drainage area should not exceed 5 acres.
. In Non-Traffic Areas:
- Height =18 in. maximum
- Top width = 24 in. minimum for three or more layer construction
- Top width =12 in. minimum for one or two layer construction
- Side slopes = :i or flatter
. In Construction Traffic Areas:
- Height =12 in. maximum
- Top Width = 24 in. minimum for three or more layer construction.
- Top width =12 in. minimum for one or two layer construction.
- Side slopes = :i or flatter.
Butt ends of bags tightly
On multiple row, or multiple layer construction, overlapp buttjoints of adjacent row and row
beneath.
Use a pyramid approach when stacking bags.
Materials
Bag Material: Bags should be woven polypropylene, polyethylene or polyamide fabric or
burlap, minimum unit weight of 4 ounces/yd2, Mullen burst strength exceeding 300 lb/in2 m
conformance with the requirements in ASTM designation D3786, and ultraviolet stability
exceeding 70% in conformance with the requirements in ASTM designation D4355.
Bag Size: Each gravel-filledbag should have a length of 18 in., width of 12 in., thickness of
3 in., and mass of approximately 33 lbs. Bag dimensions are nominal, and may vary based
on locally available materials.
Fill Material: Fill material should be 0.5 to 1 in. Class 2 aggregate base, clean and free
from clay, organic matter, and other deleterious material, or other suitable open graded,
non-cohesive, porous gravel
Costs
Gravel filter: Expensive, since off-site materials, hand construction, and demolition/removal
are usually required. Material costs for gravel bags are average of $2.50 per empty gravel bag.
Gravel costs range from $20-$ per yd3.
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SE-6 Gravel Bag Berm
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
Gravel bags exposed to sunlight will need to be replaced every two to three months due to
degrading of the bags.
Reshape or replace gravel bags as needed.
Repair washouts or other damage as needed.
Sediment that accumulates in the BMP must be periodically removed in order to maintain
BMP effectiveness. Sediment should be removed when the sediment accumulation reaches
one-third of the barrier height. Sediment removed during maintenance maybe incorporated
into earthwork on the site or disposed at an appropriate location.
Remove gravel bag berms when no longer needed. Remove sediment accumulation and
clean, re-grade, and stabilize the area Removed sediment should be incorporated in the
projector disposed of.
References
Handbook of Steel Drainage and Highway Construction, American Iron and Steel Institute,
1983.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Pollution Plan Handbook, First Edition, State of California, Department of
Transportation Division of New Technology, Materials and Research, October 1992.
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Objectives
EC Erosion Control
BE Sediment Control
TR Tracking Control
WE Wind Erosion Control
P19 NonStoimwater
Management Control
WM Waste Management and
Mateiials Pollution Cord
Legend:
Primary Objective
ll Secondary Objective
Street Sweeping and Vacuuming SE-7
Description and Purpose
Street sweeping and vacuuming includes use of self-propelled
and walk-behind equipment to remove sediment from streets
and roadways, and to clean paved surfaces in preparation for
final paving. Sweeping and vacuuming prevents sediment from
the project site from entering storm drains or receiving waters.
Suitable Applications
Sweeping and vacuuming are suitable anywhere sediment is
tracked from the project site onto public or private paved
streets and roads, typically at points of egress. Sweeping and
vacuuming are also applicable during preparation of paved
surfaces for final paving.
Limitations
Sweeping and vacuuming may not be effective when sediment
is wet or when tracked soil is caked (caked soil may need to be
scraped loose).
Implementation
Controlling the number of points where vehicles can leave
the site will allow sweeping and vacuuming efforts to be
focused, and perhaps save money.
a Inspect potential sediment tracking locations daily.
in Visible sediment tracking should be swept or vacuumed on a
daily basis.
Targeted Constituents
Sediment
Nutrient
Trash I1
Metals
Bacteria
Oil and Grease F1
Organics
Potential Alternatives
None
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SE-7 Street Sweeping and Vacuuming
Do not use kick brooms or sweeper attachments. These tend to spread the dirt rather than
remove it.
If not mixed with debris or trash, consider incorporating the removed sediment back into
the project
Costs
Rental rates for self-propelled sweepers vary depending on hopper size and duration of rental.
Expect rental rates from $58/hour (3 yd3 hopper) to $88/hour (g yd3 hopper), plus operator
costs. Hourly production rates vary with the amount of area to be swept and amount of
sediment. Match the hopper size to the area and expect sediment load to minimize time spent
dumping.
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
When actively in use, points of ingress and egress must be inspected daily.
When tracked or spilled sediment is observed outside the construction limits, it must be
removed at least daily. More frequent removal, even continuous removal, may be required
in some jurisdictions.
Be careful not to sweep up any unknown substance or any object that may be potentially
hazardous.
Adjust brooms frequently; maximize efficiency of sweeping operations.
After sweeping is finished, properly dispose of sweeper wastes at an approved dumpsite.
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Labor Surcharge and Equipment Rental Rates, State of California Department of Transportation
(Caltrans), April 1, 2002 - March 31, 2003.
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Targeted Constituents
Sediment El
Nutilenta
Trash El
Metals
Bacteria
Oil and Grease El
Organics
Potential Alternatives
None
Street Sweeping and Vacuuming SE-7
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control El
WE Wind Erosion Control
NS Nori-Stomiwater
Management Control
WM Waste Management and
Matenals Pollution Control
Legend:
El Primary Objective
IN Secondary Objective
Description and Purpose
Street sweeping and vacuuming includes use of self-propelled
and walk-behind equipment to remove sediment from sheets
and roadways, and to clean paved surfaces in preparation for
final paving. Sweeping and vacuuming prevents sediment from
the project site from entering storm drains or receiving waters.
Suitable Applications
Sweeping and vacuuming are suitable anywhere sediment is
tracked from the project site onto public or private paved
streets and roads, typically at points of egress. Sweeping and
vacuuming are also applicable during preparation of paved
surfaces for final paving.
Limitations
Sweeping and vacuuming may not be effective when sediment
is wet or when tracked soil is caked (caked soil may need to be
scraped loose).
Implementation
Controlling the number of points where vehicles can leave
the site will allow sweeping and vacuuming efforts to be
focused, and perhaps save money.
. Inspect potential sediment tracking locations daily.
Visible sediment tracking should be swept or vacuumed on a
daily basis.
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SE-7 Street Sweeping and Vacuuming
Do not use kick brooms or sweeper attachments. These tend to spread the dirt rather than
remove it
If not mixed with debris or trash, consider incorporating the removed sediment back into
the project
Costs
Rental rates for self-propelled sweepers vary depending on hopper size and duration of rental.
Expect rental rates from $58/hour (3 yd3 hopper) to $88/hour (g yd3 hopper), plus operator
costs. Hourly production rates vary with the amount of area to be swept and amount of
sediment. Match the hopper size to the area and expect sediment load to minimize time spent
dumping.
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
When actively in use, points of ingress and egress must be inspected daily.
When tracked or spilled sediment is observed outside the construction limits, it must be
removed at least daily. More frequent removal, even continuous removal, may be required
in some jurisdictions.
Be careful not to sweep up any unknown substance or any object that may be potentially
hazardous.
Adjust brooms frequently; maximize efficiency of sweeping operations.
After sweeping is finished, properly dispose of sweeper wastes at an approved dumpsite.
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Labor Surcharge and Equipment Rental Rates, State of California Department of Transportation
(Caltrans), April 1, 2002 - March 31, 2003.
2 of 2 CalWornlaStormwatEr BMP Handbook January 2003
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Barrier
AIR
, .
Ii WK.
..bJectie .
EC Erosion Control lj
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
NS NonStomiwater
Management Control
WM Waste Management and
Matenats Pollution Control
Legend:
lI Primary Objective
lJ Secondary Objective
Description and Purpose
A sandbag barrier is a series of sand-filled bags placed on a
level contour to intercept sheet flows. Sandbag barriers pond
sheet flow runoff; allowing sediment to settle out.
Suitable Applications
Sandbag barriers may be suitable:
. Asa linear sediment control measure:
- Below the toe of slopes and erodible slopes
-. As sediment traps at culvert/pipe outlets
Targeted Constituents
Sediment 11
Nutiienb
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
SE-I Silt Fence
SE-5 Fiber Rolls
SE-6 Gravel Bag Berm
SE-9 Straw Bale Baffler
- Down slope of exposed soil areas
- Around temporary stockpiles and spoil areas
- Parallel to a roadway to keep sediment off paved areas
- Along streams and channels
u As linear erosion control measure:
- Along the face and at grade breaks of exposed, and erodible
slopes to shorten slope length and spread runoff as sheet
flow ,,,
bui'.n
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- Below other small cleared areas
- Along the perimeter of a site
SE-8 Sandbag Barrier
- At the top of slopes to divert runoff away from disturbed slopes
- As check dams across mildly sloped construction roads
Limitations
It is necessary to limit the drainage area upstream of the barrier to 5 acres.
Degraded sandbags may rupture when removed, spilling sand.
Installation can be labor intensive.
Barriers may have limited durability for long-term projects.
When used to detain concentrated flows, maintenance requirements increase.
Burlap should not be used for sandbags.
Implementation
General
A sandbag barrier consists of a row of sand-filled bags placed on a level contour. When
appropriately placed, a sandbag barrier intercepts and slows sheet flow runoff causing
temporary ponding. The temporary ponding provides quiescent conditions allowing sediment
to settle. While the sand-filled bags are porous, the fine sand tends to quickly plug with
sediment, limiting the rate of flow through the barrier. If a porous barrier is desired, consider
SE-1, Silt Fence, SE-S, Fiber Rolls, SE-6, Gravel Bag Berms, or SE-9, Straw Bale Barriers.
Sandbag barriers also interrupt the slope length and thereby reduce erosion by reducing the
tendency of sheet flows to concentrate into rivulets which erode rills, and ultimately gullies, into
disturbed, sloped soils. Sandbag barriers are similar to ground bag berms, but less porous.
Design and Layout
. Locate sandbag barriers on a level contour.
- Slopes between 20:1 and 2:1 (H: V): Sandbags should be placed at a maximum interval of
50 ft (a closer spacing is more effective), with the first row near the slope toe.
- Slopes 2:1 (H:V) or steeper: Sandbags should be placed at a maximum interval of 25 ft (a
closer spacing is more effective), with the first row placed near the slope toe.
Turn the ends of the sandbag barrier up slope to prevent runoff from going around the
barrier.
Allow sufficient space up slope from the barrier to allow ponding, and to provide room for
sediment storage.
For installation near the toe of the slope, consider moving the barrier away from the slope
toe to facilitate cleaning. To prevent flow behind the barrier, sandbags can be placed
perpendicular to the barrier to serve as cross barriers.
Drainage area should not exceed 5 acres.
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Sandbag Barrier SE-8
Stack sandbags at least three bags high.
Butt ends of bags tightly.
Overlapp butt joints of row beneath with each successive row.
Use a pyramid approach when stacking bags.
In non-traffic areas
- Height = 18 in. maximum
- Top width = 24 in. minimum for three or more layer construction
- Side slope = 2:1 or flatter
In construction traffic areas
- Height =12 in. maximum
- Top width = 24 in. minimum for three or more layer construction.
- Side slopes = :i or flatter.
Materials
Sandbag Material: Sandbag should be woven polypropylene, polyethylene or polyamide
fabric, minimum unit weight of 4 ounces/yd2, Mullen burst strength exceeding 300 lb/in2 in
conformance with the requirements in ASTM designation D3786, and ultraviolet stability
exceeding 70% in conformance with the requirements in ASTM designation D4355. Use of
burlap may not acceptable in some jurisdictions.
Sandbag Size: Each sand-filled bag should have a length of 18 in., width of 12 in.,
thickness of 3 in., and mass of approximately 33 lbs. Bag dimensions are nominal, and may
vary based on locally available materials.
Fill Material: All sandbag fill material should be non-cohesive, Class 1 or Class 2
permeable material free from clay and deleterious material
Costs
Sandbag barriers are more costly, but typically have a longer useful life than other barriers.
Empty sandbags cost $0.25 - $0.75. Average cost of fill material is $8 per yd3. Pre-filled
sandbags are more expensive at $1.50 - $2.00 per bag.
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
Sandbags exposed to sunlight will need to be replaced every two to three months due to
degradation of the bags.
Reshape or replace sandbags as needed.
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SE-8 Sandbag Barrier
Repair washouts or other damage as needed.
Sediment that accumulates in the BMP must be periodically removed in order to maintain
BMP effectiveness. Sediment should be removed when the sediment accumulation reaches
one-third of the barrier height. Sediment removed during maintenance may be incorporated
into earthwork on the site or disposed at an appropriate location.
Remove sandbags when no longer needed. Remove sediment accumulation, and clean, re-
grade, and stabilize the area.
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
4of 6 California StormwatEr BMP Handbook January 2003
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SE-10
Objectives
EC Erosion Control
BE Sediment Control
TR Tracking Control
WE Wind Erosion Control
NS Non Stormwster
Management Conbo!
VIM Waste Management and
Materials Pollution Cor*ol
Legend:
1?! Primary Objective
IN Secondary Objective
Storm Drain Inlet Protection
Description and Purpose
Storm drain inlet protection consists of a sediment filter or an
impounding area arOund or upstream of a storm drain, drop
inlet, or curb inlet. Storm drain inlet protection measures
temporarily pond runoff before it enters the storm drain,
allowing sediment to settle. Some filter configurations also
remove sediment by filtering, but usually-the ponding action
results in the greatest sediment reduction.
Suitable Applications
Every storm drain inlet receiving sediment-laden runoff should
be protected.
Limitations
Drainage area should not exceed 1 acre.
Straw bales, while potentially effective, have not produced
in practice satisfactory results, primarily due to improper
installation.
Requires an adequate area for water to pond without
encroaching into portions of the roadway subject to traffic.
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
SE-1 Silt Fence
SE-5 Fiber Rolls
SE-6 Gravel Bag Berm
SE-8 Sandbag Barrier
SE-9 Straw Bale Barrier
Inlet protection usually requires.other methods of
temporary protection to prevent sediment-laden
stormwater and non-stormwater discharges from entering the
storm drain system.
Sediment removal maybe difficult in high flow conditions or if
runoff is heavily sediment laden If high flow conditions are £ a
cAt kST.1FMW.' r i:irr
January 2003 California Stormwatr BMP Handbook 1 of 9
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SE-10 Storm Drain Inlet Protection
expected, use other onsite sediment trapping techniques in conjunction with inlet
protection.
Frequent maintenance is required.
For drainage areas larger than 1 acre, runoff should be routed to a sediment-trapping device
designed for larger flows. See BMPs SE-2, Sediment Basin, and SE-3, Sediment Traps.
Excavated drop inlet sediment traps are appropriate where relatively heavy flows are
expected, and overflow capability is needed.
Implementation
General
Large amounts of sediment may enter the storm drain system when storm drains are installed
before the upslope drainage area is stabilized, or where construction is adjacent to an existing
storm drain. In cases of extreme sediment loading the storm drain itself may clog and lose a
major portion of its capacity. To avoid these problems, it is necessary to prevent sediment from
entering the system at the inlets.
Inlet control measures presented in this handbook should not be used for inlets draining more
than one acre. Runoff from larger disturbed areas should be first routed through SE-2,
Sediment Basin or SE-3, Sediment Trap. Different types of inlet protection are appropriate for
different applications depending on site conditions and the type of inlet Inlet protection
methods not presented in this handbook should be approved by the local stormwater
management agency.
Design and Layout
Identify existing and planned storm drain inlets that have the potential to receive sediment-
laden surface runoff. Determine if storm drain inlet protection is needed and which method to
use.
Limit upstream drainage area to i acre maximum. For larger drainage areas, use SE-2,
Sediment Basin, or SE-3, Sediment Trap, upstream of the inlet protection device.
The key to successful and safe use of storm drain inlet protection devices is to know where
runoff will pond or be diverted.
- Determine the acceptable location and extent of ponding in the vicinity of the drain inlet.
The acceptable location and extent ofponding will influence the type and design of the
storm drain inlet protection device.
- Determine the extent of potential runoff diversion caused by the storm drain inlet
protection device. Runoff ponded by inlet protection devices may flow around the device
and towards the next downstream inlet In some cases, this is acceptable; in other cases,
serious erosion or downstream property damage can be caused by these diversions. The
possibility of runoff diversions will influence whether or not storm drain inlet protection
is suitable; and, if suitable, the type and design of the device.
The location and extent of ponding, and the extent of diversion, can usually be controlled
through appropriate placement of the inlet protection device. In some cases, moving the
20f 9 - - Cah1orniaStormwatr BMP Handbook January 2003
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Storm Drain Inlet Protection SE-10
inlet protection device a short distance upstream of the actual inlet can provide more
efficient sediment control, limit pondingto desired areas, and prevent or control diversions.
Four types of inlet protection are presented below. However, it is recognized that other
effective methods and proprietary devices exist and maybe selected.
- Filter Fabric Fence: Appropriate for drainage basins with less than a 5% slope, sheet
flows, and flows under 0.5 cfs.
- Excavated Drop Inlet Sediment Trap: An excavated area around the inlet to trap
sediment (SE-3).
- Gravel bag barrier: Used to create a small sediment trap upstream of inlets on sloped,
paved streets. Appropriate for sheet flow or when concentrated flow may exceed 0.5 cfs,
and where overtopping is required to prevent flooding.
- Block and Gravel Filter: Appropriate for flows greater than 0.5 cfs.
Select the' appropriate type of inlet protection and design as referred to or as described in
this fact sheet.
Provide area around the inlet for water to pond without flooding structures and property.
Grates and spaces around all inlets should be sealed to prevent seepage of sediment-laden
water.
Excavate sediment sumps (where needed) 1 t 2 ft with 2:1 side slopes around the inlet.
Installation
DI Protection Type i -Filter Fabric Fence -The filter fabric fence (Type i) protection
is shown in the attached figure. Similar to constructing a silt fence; see BMP SE-i, Silt
Fence. Do not place filter fabric underneath the inlet grate since the collected sediment may
fall into the drain inlet when the fabric is removed or replaced.
Excavate a trench approximately 6 in. wide and 6 in. deep along the line of the silt fence
inlet protection device.
Place 2 in. by 2 in. wooden stakes around the perimeter of the inlet a maximum 0f3 ft
apart and drive them at least 18 in. into the ground or 12 in below the bottom of the
trench. The stakes must be at least 48 in.
Lay fabric along bottom of trench, up side of trench, and then up stakes. See SE-1, Silt
Fence, for details. The maximum silt fence height around the inlet is 24 in.
Staple the filter fabric (for materials and specifications, see SE-1, Silt Fence) to wooden
stakes. Use heavy-duty wire staples at least 1 in. in length.
Backfill the trench with gravel or compacted earth all the way around.
a DlProtectüm Type 2-Excavated Drop Inlet Sediment Thap -The excavated drop
inlet sediment trap (Type 2) is shown in the attached figures. Install filter fabric fence in
January 2003 California Stormwatr BMP Handbook 3 of 9
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SE-10 Storm Drain Inlet Protection
accordance with DI Protection Type 1. Size excavated trap to provide a minimum storage
capacity calculated at the rate 67yd3/acre of drainage area.
DI Protection Type 3- Gravel bag - The gravel bag barrier (Type 3) is shown in the
figures. Flow from a severe storm should not overtop the curb. In areas of high clay and
silts, use filter fabric and gravel as additional filter media. Construct gravel bags in
accordance with SE-6, Gravel Bag Berm. Gravel bags should be used due to their high
permeability.
Use sandbag made of geotextile fabric (not burlap) and fill with 0.75 in. rock or 0.25 in.
pea gravel
Construct on gently sloping street.
Leave room upstream of barrier for water to pond and sediment to settle.
Place several layers of sand bags - overlapping the bags and packing them tightly
together.
. Leave gap of one bag on the top row to serve as a spillway. Flow from a severe storm
(e.g., 10 year storm) should not overtop the curb.
DI Protection Type 4—Block and Gravel Filter -The block and gravel filter (Type 4)
is shown in the figures. Block and gravel filters are suitable for curb inlets commonly used in
residential, commercial, and industrial construction
Place hardware cloth or comparable wire mesh with 0.5 in. openings over the drop inlet
so that the wire extends a minimum of i. ft beyond each side of the inlet structure. If
more than one strip is necessary, overlap the strips. Place filter fabric over the wire
mesh.
Place concrete blocks lengthwise on their sides in a single row around the perimeter of
the inlet, so that the open ends face outward, not upward. The ends of adjacent blocks
should abut. The height of the barrier can be varied, depending on design needs, by
stacking combinations of blocks that are 4 in., 8 in., and 12 in. wide. The row of blocks
should be at least 12 in. but no greater than 24 in. high.
Place wire mesh over the outside vertical face (open end) of the concrete blocks to
prevent stone from being washed through the blocks. Use hardware cloth or comparable
wire mesh with 0.5 in. opening.
Pile washed stone against the wire mesh to the top of the blocks. Use 0.75 to 3 in.
Costs
Average annual cost for installation and maintenance (one year useful life) is $200 per inlet.
Inspection and Maintenance
Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events,
weekly during the rainy season, and at two-week intervals during the non-rainy season.
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Storm Drain Inlet Protection SE-10
Filter Fabric Fences. If the fabric becomes clogged, torn, or degrades, it should be replaced.
Make sure the stakes are securely driven in the ground and are in good shape (i.e., not bent,
cracked, or splintered, and are reasonably perpendicular to the ground). Replace damaged
stakes.
Gravel Filters. If the gravel becomes clogged with sediment, it must be carefully removed
from the inlet and either cleaned or replaced. Since cleaning gravel at a construction site
may be difficult, consider using the sediment-laden stone as fill material and put fresh stone
around the inlet. Inspect bags for holes, gashes, and snags, and replace bags as needed.
Check gravel bags for proper arrangement and displacement.
Sediment that accumulates in the BMP must be periodically removed in order to maintain
BMP effectiveness. Sediment should be removed when the sediment accumulation reaches
one-third of the barrier height. Sediment removed during maintenance maybe incorporated
into earthwork on the site ore disposed at an appropriate location.
Remove storm drain inlet protection once the drainage area is stabilized.
- Clean and regrade area around the inlet and clean the inside of the storm drain inlet as it
must be free of sediment and debris at the time of final inspection.
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management Manual for The Puget Sound Basin, Washington State Department of
Ecology, Public Review Dra.ft, 1991.
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Wind Erosion Control
Description and Purpose
Wind erosion or dust control consists of applying water or other
dust palliatives as necessary to prevent or alleviate dust
nuisance generated by construction activities. Covering small
stockpiles or areas is an alternative to applying water or other
dust palliatives.
Suitable Applications
Wind erosion control BMPs are suitable during the following
construction activities:
WE-i
Objectives
EC Erosion Control
SE Sediment Control 11
TC Tracking Control
WE Wind Erosion Control
NS NonStormwater
Management Control
WM Waste Management and
Materials PoIluon Conbol
Legend:
[0 Primary Objective
IN Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteila
Oil and Grease
Organics
Potential Alternatives
Construction vehicle traffic on unpaved roads None
Drilling and blasting activities
Sediment tracking onto paved roads
Soils and debris storage piles
Batch drop from front-end loaders
Areas with unstabilized soil
. Final grading/site stabilization
Limitations
Watering prevents dust only for a short period and should be
applied daily (or more often) to be effective. ..
Over watering may cause erosion.
.tr. ri_P
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WE-1 Wind Erosion Control
Oil or oil-treated subgrade should not be used for dust control because the oil may migrate
into drainageways and/or seep into the soil.
Effectiveness depends on soil, temperature, humidity, and wind velocity.
Chemically treated sub grades may make the soil water repellan; interfering with long-term
infiltration and the vegetation/re-vegetation of the site. Some chemical dust suppressants
may be subject to freezing and may contain solvents and should be handled properly.
Asphalt, as a mulch tack or chemical mulch, requires a 24-hour curing time to avoid
adherence to equipment, worker shoes, etc. Application should be limited because asphalt
surfacing may eventually migrate into the drainage system.
In compacted areas, watering and other liquid dust control measures may wash sediment or
other constituents into the drainage system.
Implementation
General
California's Mediterranean climate, with short wet seasons and long hot dry seasons, allows the
soils to thoroughly dry out. During these dry seasons, construction activities are at their peak,
and disturbed and exposed areas are increasingly subject to wind erosion, sediment tracking
and dust generated by construction equipment.
Dust control, as a BMP, is a practice that is already in place for many construction activities.
Los Angeles, the North Coast, and Sacramento, among others, have enacted dust control
ordinances for construction activities that cause dust to be transported beyond the construction
project property line.
Recently, the State Air Resources Control Board has, under the authority of the Clean Air Act,
started to address air quality in relation to inhalable particulate matter less than 10 microns
(PM-1o). Approximately 90 percent of these small particles are considered to be dust Existing
dust control regulations by local agencies, municipal departments, public works department,
and public health departments are in place in some regions within California.
Many local agencies require dust control in order to comply with local nuisance laws, opacity
laws (visibility impairment) and the requirements of the Clean Air Act. The following are
measures that local agencies may have already implemented as requirements for dust control
from contractors:
Construction and Grading Permits: Require provisions for dust control plans.
Opacity Emission Limits: Enforce compliance with California air pollution control laws.
Increase Overall Enforcement Activities: Priority given to cases involving citizen complaints.
Maintain Field Application Records: Require records of dust control measures from
contractor;
Stormwater Pollution Prevention Plan: (SWPPP): Integrate dust control measures into
swPPP.
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Wind Erosion Control
Dust Control Practices
Dust control BMPs generally stabilize exposed surfaces and minimize activities that suspend or
track dust particles. The followrng table shows dust control practices that can be applied to site
conditions that cause dust. For heavily traveled and disturbed areas, wet suppression
(watering), chemical dust suppression, gravel asphalt surfacing, temporary gravel construction
entrances, equipment wash-out areas, and haul truck covers can be employed as dust control
applications. Permanent or temporary vegetation and mulching can be employed for areas of
occasional or no construction traffic. Preventive measures would include minimiiing surface
areas to be disturbed, limiting onsite vehicle traffic to 15 mph, and controlling the number and
activity of vehicles on a site at any given time.
OUST CONTROIPRAC110ES
SITE CONDITION Permanent t Chemical Gravel or Silt
Temporary Gravel
Construction Haul Minimize
Extert of
Vegetation Mulching Suppression
(Watering)
Oust
Suppression Ahaft Fences EntranceslEquipmen Covers Disturbed
Wesh DOM Area
DIsturbed Areas
riot Subject to X X X X X X
Traffic
Disturbed Areas X x x x x Subject to Traffic
Materal Stock Pile X x x x Stabilization
Demolition X X X
Clearing/ x x x x Excavation
Truck Traffic on X x x x x Unpaved Roads
Mud/Dirt Carry x x out
Additional preventive measures include:
. Schedule construction activities to minimi.e exposed area (EC-1, Scheduling).
Quickly stabilize exposed soils using vegetation, mulching, spray-on adhesives, calcium
chloride, sprinkling, and stone/gravel layering.
. Identify and stabilize key access points prior to commencement of construction.
. Minimize the impact of dust by anticipating the direction of prevailing winds.
. Direct most construction traffic to stabilized roadways within the project site.
Water should be applied by means of pressure-type distributors or pipelines equipped with a
spray system or hoses and nozzles that will ensure even distribution.
. All distribution equipment should be equipped with a positive means of shutoff.
Unless water is applied by means of pipelines, at least one mobile unit should be available at
all times to apply water or dust palliative to the project.
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WE-1 Wind Erosion Control
If reclaimed waste water is used, the sources and discharge must meet California
Department of Health Services water reclamation criteria and the Regional Water Quality
Control Board requirements. Non-potable water should not be conveyed in tanks or drain
pipes that will be used to convey potable water and there should be no connection between
potable and non-potable supplies. Non-potable tanks, pipes, and other conveyances should
be marked, "NON-POTABLE WATER - DO NOT DRINK"
Materials applied as temporary soil stabilizers and soil binders also generally provide wind
erosion control benefits.
Pave or chemically stabilize access points where unpaved traffic surfaces adjoin paved roads.
Provide covers for haul trucks transporting materials that contribute to dust.
Provide for wet suppression or chemical stabilization of exposed soils.
Provide for rapid cleanup of sediments deposited on paved roads. Furnish stabilized
construction road entrances and vehicle wash down areas.
Stabilize inactive construction sites using vegetation or chemical stabilization methods.
Limit the amount of areas disturbed by clearing and earth moving operations by scheduling
these activities in phases.
For chemical stabilization, there are many products available for chemically stabilizing gravel
roadways and stockpiles. If chemical stabilization is used, the chemicals should not create any
adverse effects on stormwater, plant life, or groundwater.
Costs
Installation costs for water and chemical dust suppression are low, but annual costs may be
quite high since these measures are effective for only a few hours to a few days.
Inspection and Maintenance
Inspect and verify that activity-based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and at two-week intervals in the non-rainy season to verify
continued BMP implementation.
Check areas protected to ensure coverage.
Most dust control measures require frequent, often daily, or multiple times per day
attention.
References
Best Management Practices and Erosion Control Manual for Construction Sites, Flood Control
District of Maricopa County, Arizona, September 1992.
California Air Pollution Control Laws, California Air Resources Board, 1992.
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Wind Erosion Control WE-1
Caltrans, Standard Specifications, Sections 10, "Dust Contror'; Section 17, "Watering'; and
Section 18, "Dust Palliative".
Prospects for Attaining the State Ambient Air Quality Standards for Suspended Particulate
Matter (PMio), Visibility Reducing Particles, Sulfates, Lead, and Hydrogen Sulfide, California
Air Resources Board, April 1991.
Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
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Objectives
EC Erosion Control 99
SE Sediment Contra go
IC Tracking Control
WE Wind Erosion Control
NS NonStormwer
Management Control
WM Waste Management and
Materials Polliiion Control
Legend:
lI Primary Objective
IN Secondary Objective
Targeted Constituents
Sediment
Nililents
Trash
Metals
Bacteria
Oil and Grease
Organics
POtential Alternatives
None
Stabilized Construction Entrance/Exit TC-1
Description and Purpose
A stabilized construction access is defined by a point of
entrance/exit to a construction site that is stabilized to reduce
the tracking of mud and dirt onto public roads by construction
vehicles.
Suitable Applications
Use at construction sites:
Where dirt or mud can be tracked onto public roads.
Adjacent to water bodies.
Where poor soils are encountered.
u Where dust is a problem during thy weather conditions.
Limitations
Entrances and exits require periodic top dressing with
additional stones.
This BMP should be used in conjunction with street'
sweeping on adjacent public right of way.
Entrances and exits should be constructed on level ground
only.
Stabilized construction entrances are rather expensive to
construct and when a wash rack is included, a sediment trap of
some kind must also be provided to collect wash water runoff.
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Stabilized Construction Entrance/Exit TC-1
Implementation
General
A stabilized construction entrance is a pad of aggregate underlain with filter cloth located at any
point where traffic will be entering or leaving a construction site to or from a public right of way,
street, alley, sidewalk, or parking area. The purpose of a stabilized construction entrance is to
reduce or eliminate the tracking of sediment onto public rights of way or streets. Reducing
tracking of sediments and other pollutants onto paved roads helps prevent deposition of
sediments into local storm drains and production of airborne dust.
Where traffic will be entering or leaving the construction site, a stabilized construction entrance
should be used. NPDES permits require that appropriate measures be implemented to prevent
tracking of sediments onto paved roadways, where a significant source of sediments is derived
from mud and dirt carried out from unpaved roads and construction sites.
Stabilized construction entrances are moderately effective in removing sediment from
equipment leaving a construction site. The entrance should be built on level ground.
Advantages of the Stabilized Construction Entrance/Exit is that it does remove some sediment
from equipment and serves to channel construction traffic in and out of the site at specified
locations. Efficiency is greatly increased when a washing rack is included as part of a stabilized
construction entrance/exit.
Design and Layout
Construct on level ground where possible.
Select 3 to 6 in. diameter stones.
Use minimum depth of stones of 12 in or as recommended by soils engineer.
Construct length 0f50 ft minimum, and 30 ft minimum width.
Rumble racks constructed of steel panels with ridges and installed in the stabilized
entrance/exit will help remove additional sediment and to keep adjacent streets clean.
Provide ample turning radii as part of the entrance.
Limit the points of entrance/exit to the construction site.
Limit speed of vehicles to control dust.
Properly grade each construction entrance/exit to prevent runoff from leaving the
construction site.
Route runoff from stabilized entrances/exits through a sediment trapping device before
discharge.
Design stabilized entrance/exit to support heaviest vehicles and equipment that will use it.
Select construction access stabilization (aggregate, asphaltic concrete, concrete) based on
longevity, required performance, and site conditions. Do not use asphalt concrete (AC)
grinding for stabilized construction access/roadway.
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Stabilized Construction Entrance/Exit TC-1.
If aggregate is selected, place crushed aggregate over geotextile fabric to at least 12 in. depth,
or place aggregate to a depth recommended by a geotechnical engineer. A crushed aggregate
greater than 3 in. but smaller than 6 in. should be used.
Designate combination or single purpose entrances and exits to the construction site.
Require that all employees, subcontractors, and suppliers utilize the stabilized construction
access.
Implement SE-7, Street Sweeping and Vacuuming, as needed.
All exit locations intended to be used for more than a two-week period should have stabilized
construction entrance/exit BMPs.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMPs are under way, inspect
weekly during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect local roads adjacent to the site daily. Sweep or vacuum to remove visible
accumulated sediment.
Remove aggregate, separate and dispose of sediment if construction entrance/exit is clogged
with sediment.
Keep all temporary roadway ditches clear.
Check for damage and repair as needed.
Replace gravel material when surface voids are visible.
Remove all sediment deposited on paved roadways within 24 hours.
Remove gravel and filter fabric at completion of construction
Costs
Average annual cost for installation and maintenance may vary from $4200 to $4,800 each,
averaging $2,400 per entrance. Costs will increase with addition of washing rack, and sediment
trap. With wash rack, costs range from $1,200 - $6,000 each, averaging $3,600 per entrance.
References
Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area
Governments, May 1995.
National Management Measures to Control Nonpoint Source Pollution from Urban Areas,
USEPA Agency, 2002.
Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in
Coastal Waters, Work Group Working Paper, USEPA, April 1992.
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Stabilized Construction Entrance/Exit TC-1
Storrnwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stomiwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75,
Washington State Department of Ecology, February 1992.
Virginia Erosion and Sedimentation Control Handbook, Virginia Department of Conservation
and Recreation, Division of Soil and Water Conservation, 1991.
Guidance SpeciIvthg Management Measures for Nonpoint Pollution in Coastal Waters, EPA
840-B-9-002, USEPA, Office of Water, Washington, DC, 1993.
Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of
Management Practices, Tahoe Regional Planning Agency, November 1988.
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EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS NonStoimwater
Management Control
WM Waste Management and
Matedats Polkiion Control
Legend:
lJ Primary Objective
IN Secondary Objective
NA
Entrance/Outlet Tire Wash TC-3
Objectives
Description and Purpose
A tire wash is an area located at stabilized construction access
points to remove sediment from tires and under carriages and
to prevent sediment from being transported onto public
roadways.
Suitable Applications
Tire washes may be used on construction sites where dirt and
mud tracking onto public roads by construction vehicles may
occur.
Limitations
The tire wash requires a supply of wash water.
A turnout or doublewide exit is required to avoid having
entering vehicles drive through the wash area.
Targeted Constituents
Sediment (1
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
TC-1 Stabilized Constiuction
Ertance/Exit
Do not use where wet tire trucks leaving the site leave the
road dangerously slick.
Implementation
Incorporate with a stabilized construction entrance/exit.
See TO-1, Stabilized Construction Entrance/Exit.
Construct on level ground when possible, on a pad of coarse
aggregate greater than 3 in but smaller than 6 in. A geo textile
fabric should be placed below the aggregate.
Wash rack should be designed and constructed/manufactured
for anticipated traffic loads. A £
n
QUALM .(
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TC-3 Entrance/Outlet Tire Wash
Provide a drainage ditch that will convey the runoff from the wash area to a sediment
trapping device. The drainage ditch should be of sufficient grade, width, and depth to carry
the wash runoff.
Use hoses with automatic shutoff nozzles to prevent hoses from being left on.
Require that all employees, subcontractors, and others that leave the site with mud caked
tires and undercarriages to use the wash facility.
Implement SC-7, Street Sweeping and Vacuuming, as needed.
Costs
Costs are low for installation of wash rack.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges
occur.
Remove accumulated sediment in wash rack and/or sediment trap to maintain system
performance.
Inspect routinely for damage and repair as needed.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Coastal Nonpoint Pollution Control Program; Program Development and Approval Guidance,
Working Group, Working Paper; USEPA, April1992.
Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area
Governments, May 1995.
Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities, Developing Pollution Prevention Plans
and Best Management Practices, EPA 832-R-oo5; USEPA, April 1992.
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Water Conservation Practices NS-1
Objectives
EC Erosion Control 99
SE Sediment Control Im
TR Tracking Control
WE Wind Erosion Control
NS NonStormwater
Management Control
WlYl Waste Management and
Matenals Pollution Control
Legend:
0 Primary Objective
IN Secxrndary Objective
Description and Purpose
Water conservation practices are activities that use water
during the construction of a project in a manner that avoids
causing erosion and the transport of pollutants offsite. These
practices can reduce or e1iminte non-stormwater discharges.
Suitable Applications
Water conservation practices are suitable for all construction
sites where water is used, including piped water, metered
water, trucked water, and water from a reservoir.
Limitations
None identified.
Implementation
Keep water equipment in good working condition.
Stabilize water truck filling area
Repair water leaks promptly.
Washing of vehicles and equipment on the construction site
is discouraged.
Avoid using water to clean construction areas. If water
must be used for cleaning or surface preparation, surface
should be swept and vacuumed first to remove dirt. This will
minimize amount of water required.
Targeted Constituents
Sediment (1
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
None
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NS-1 Water Conservation Practices
Direct construction water runoff to areas where it can soak into the ground or be collected
and reused.
Authorized non-stormwater discharges to the storm drain system, channels, or receiving
waters are acceptable with the implementation of appropriate BMPs.
Lock water tank valves to prevent unauthorized use.
Costs
The cost is small to none compared to the benefits of conserving water.
Inspection and Maintenance
Inspect and verify that activity based BMPs are in place prior to the commencement of
authorized non-stormwater discharges.
Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges
are occuring.
Repair water equipment as needed to prevent unintended discharges.
- Water trucks
- Water reservoirs (water buffalos)
- Irrigation systems
- Hydrant connections
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
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Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
NS Non-Stomiwater
Management Control
WM Waste Management and ro
Materials Pollution Control
Legend:
Primary Objective
91 Secondary Objective
Paving and Grinding Operations NS-3
Description and Purpose
Prevent or reduce the discharge of pollutants from paving
operations, using measures to prevent runon and runoff
pollution, properly disposing of wastes, and training employees
and subcontractors.
Suitable Applications
These procedures are implemented where paving, surfacing,
resurfacing, or sawcutting may pollute stormwater runoff or
discharge to the storm drain system or watercourses.
Limitations
Finer solids are not effectively removed by filtration
systems.
Paving opportunities maybe limited during wet weather.
Implementation
General
a Avoid paving during the wet season when feasible.
fdrécàst
Tram.
preventionand reduci:ion.
'a Store materials away:'from drainagecourses .to;preyent.
stormwater runon (see WM-1, Màterinl Deliveiy and Storage).
Targeted Constituents
Sediment I1
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
None
cAItfA$r1nlwI!*
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NS-3 Paving and Grinding Operations
Protect drainage courses, particularly in areas with a grade, by employing BMPs to divert
runoff or to trap and filter sediment
If paving involves an onsite mixing plant, follow the stormwater permitting requirements for
industrial activities.
Stockpile material removed from roadways away from drain inlets, drainage ditches, and
watercourses, These materials should be stored consistent with WM-3, Stockpile
Management.
Disposal of PCC and AC waste should be in conformance with WM-8, Concrete Waste
Management.
Saw Cutting, Grinding, and Pavement Removal
Shovel or vacuum saw-cut slurry and remove from site. Cover or barricade storm drains
during saw cutting to contain slurry.
When paving involves AC, the following steps should be implemented to prevent the
discharge of grinding residue, uncompacted or loose AC, tack coats, equipment cleaners, or
unrelated paving materials:
- AC grindings, pieces, or chunks used in embankments or shoulder backing must not be
allowed to enter any storm drains or watercourses. Install silt fence until structure is
stabilized or permanent controls are in place. Examples oftemporary perimeter controls
can be found in EC-g, Earth Dikes and Drainage Swaies; SE-1, Silt Fence; or SE-5, Fiber
Rolls.
- Collect and remove all broken asphalt and recycle when practical Old or spilled asphalt
must be recycled or disposed.
- Any AC chunks and pieces used in embankments must be placed above the water table
and covered by at least 1 ft of material.
Do not allow saw-cut slurry to enter storm drains or watercourses. Residue from grinding
operations should be picked up by means of a vacuum attachment to the grinding machine,
should not be allowed to flow across the pavement, and should not be left on the surface of
the pavement. See also WM-8, Concrete Waste Management and WM-io, Liquid Waste
Management.
Dig out activities should not be conducted in the rain.
Collect dig out material by mechanical or manual methods. This material may be recycled
for use as shoulder backing or base material
If dig out material cannot be recycled, transport the material back to an approved storage
site.
Asphaltic Concrete Paving
If paving involves asphaltic cement concrete, follow these steps:
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Paving and Grinding Operations NS-3
- Do not allow sand or gravel placed over new asphalt to wash into storm drains, streets,
or creeks. Vacuum or sweep loose sand and gravel and properly dispose of this waste by
referring to W'M-5, Solid Waste Management.
- Old asphalt must be disposed of properly. Collect and remove all broken asphalt from
the site and recycle whenever possible.
Portland Cement Concrete Paving
Do not wash sweeping from exposed aggregate concrete into a storm drain system. Collect
and return to aggregate base stockpile or dispose of properly.
Allow aggregate rinse to settle. Then, either allow rinse water to dry in a temporary pit as
described in WM-8, Concrete Waste Management, or pump the water to the sanitary sewer
if allowed by the local wastewater authority.
Sealing Operations
During chip seal application and sweeping operations, petroleum or petroleum covered
aggregate must not be allowed to enter any storm drain or water courses. Apply temporary
perimeter controls until structure is stabilized.
Drainage inlet structures and manholes should be covered with filter fabric during
application of seal coat, tack coat, slurry seal, and fog seal.
Seal coat, tack coat, slurry seal, or fog seal should not be applied if rainfall is predicted to
occur during the application or curing period.
Paving Equipment
Leaks and spills from paving equipment can contain toxic levels of heavy metals and oil and
grease. Place drip pans or absorbent materials under paving equipment when not in use.
Cleanup spills with absorbent materials rather than burying. See NS-1o, Vehicle and
Equipment Maintenance, WM-4, Spill Prevention and Control, and WM-io, Liquid Waste
Management.
Substances used to coat asphalt transport trucks, and asphalt spreading equipment should
not contain soap and should be non-foaming and non-toxic.
Use only non-toxic substances to coat asphalt transport trucks and asphalt spreading
equipment
Paving equipment parked onsite should be parked over plastic to prevent soil
contamination
Clean asphalt coated equipment offsite whenever possible. When cleaning dry, hardened
asphalt from equipment, manage hardened asphalt debris as described in WM-5, Solid
Waste Management. Any cleaning onsite should follow NS-8, Vehicle and Equipment
Cleaning.
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NS-3 Paving and Grinding Operations
Thermoplastic Striping
Thermoplastic striper and pre-heater equipment shutoff valves should be inspected to
ensure that they are working properly to prevent leaking thermoplastic from entering drain
inlets, the stormwater drainage system, or watercourses.
Pre-heaters should be filled carefully to prevent splashing or spilling of hot thermoplastic.
Leave six inches of space at the top of the pre-heater container when fiJling thermoplastic to
allow room for material to move when the vehicle is deadheaded.
Do not pre-heat, transfer, or load thermoplastic near drain inlets or watercourses.
Clean truck beds daily of loose debris and melted thermoplastic. When possible, recycle
thermoplastic material.
Raised/Recessed Pavement Marker Application and Removal
Do not transfer or load bituminous material near drain inlets, the stormwater drainage
system, or watercourses.
Melting tanks should be loaded with care and not filled to beyond six inches from the top to
leave room for splashing when vehicle is deadheaded.
When servicing or filling melting tanks, ensure all pressure is released before removing lids
to avoid spills.
On large-scale projects, use mechanical or manual methods to collect excess bituminous
material from the roadway after removal of markers.
Costs
All of the above are low cost measures.
Inspection and Maintenance
Inspect and verify that activity-based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and at two-week intervals in the non-rainy season to verify
continued BMP implementation.
Keep ample supplies of drip pans or absorbent materials onsite.
Inspect and maintain machinery regularly to mirimie leaks and drips.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Hot Mix Asphalt-Paving Handbook AC 150/5370-14, Appendix I, U.S. Army Corps of Engineers,
July 1991.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
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Objectives
EC Erosion Control
SE Sediment Cordial
TR Tracking Control
WE Wind Erosion Control
NS NonStocmwster
Management Control
WM Waste Management and
Materiab Pollution Control
Legend:
l Primary Objective
t1 Secondary Objective
Targeted Constituents
Sediment
Nutrient
Trash
Metals 11
Bacteria ll
Oil and Grease
Organics ll
Potential Alternatives
None
Illicit Connection/Discharge NS-6
Description and Purpose
Procedures and practices designed for construction contractors
to recognize illicit connections or illegally dumped or
discharged materialson a construction site and report
incidents.
Suitable Applications
This best management practice,(BMP) applies to all
construction projects. Illicit connection/discharge and
reporting is applicable anytime an illicit connection or
discharge is discovered or illegally dumped material is found on
the construction site.
Limitations
Illicit connections and illegal discharges or dumping for the
purposes of this BMP, refer to discharges and dumping caused
by parties other than the contractor. If pie-existing hazardous
materials or wastes are known to exist onsite, they should be
identified in the SWPPP and handled as set forth in the SWPPP.
Implementation
Planning
Review the SWPPP. Pie-existing areas of contamination
should be identified and documented in the SWPPP.
Inspect site before beginning the job for evidence of illicit
connections, illegal dumping or discharges. Document any
pre-existing conditions and notify the owner.
£
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NS-6 Illicit Connection/ Discharge
Inspect site regularly during project execution for evidence of illicit connections, illegal
dumping or discharges.
Observe site perimeter for evidence for potential of illicitly discharged or illegally dumped
material, which may enter the job site.
Identification oflllicit Connections and Illegal Dumping or Discharges
General - unlabeled and unidentifiable material should be treated as hazardous.
Solids - Look for debris, or rubbish piles. Solid waste dumping often occurs on roadways
with light traffic loads or in areas not easily visible from the traveled way.
Liquids - signs of illegal liquid dumping or discharge can include:
- Visible signs of staining or unusual colors to the pavement or surrounding adjacent
soils
- Pungent odors coming from the drainage systems
- Discoloration or oily substances in the water or stains and residues detained within
ditches, channels or drain boxes
- Abnormal water flow during the dry weather season
Urban Areas - Evidence of illicit connections or illegal discharges is typically detected at
storm drain outfall locations or at manholes. Signs of an illicit connection or illegal
discharge can include:
- Abnormal water flow during the thy weather season
- Unusual flows in sub drain systems used for dewatering
- Pungent odors coming from the drainage systems
- Discoloration or oily substances in the water or stains and residues detained within
ditches, channels or drain boxes
- Excessive sediment deposits, particularly adjacent to or near active offsite construction
projects
Rural Areas - Illicit connections or illegal discharges involving irrigation drainage ditches
are detected by visual inspections. Signs of an illicit discharge can include:
- Abnormal water flow during the non-irrigation season
- Non-standard junction structures
- Broken concrete or other disturbances at or near junction structures
Reporting
Notify the owner of any illicit connections and illegal dumping or discharge incidents at the time
of discovery. For illicit connections or discharges to the storm drain system, notify the local
stormwater management agency. For illegal dumping, notify the local law enforcement agency.
Cleanup and Removal
The responsibility for cleanup and removal of illicit or illegal dumping or discharges will vary by
location. Contact the local stormwater management agency for further information-
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Illicit Connection/ Discharge NS-6
Costs
Costs to look for and report illicit connections and illegal discharges and dumping are low. The
best way to avoid costs associated with illicit connections and illegal discharges and dumping is
to keep the project perimeters secure to prevent access to the site, to observe the site for vehicles
that should not be there, and to document any waste or hazardous materials that exist onsite
before taking possession of the site.
Inspection and Maintenance
Inspect and verify that activity-based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and at two-week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect the site regularly to check for any illegal dumping or discharge.
Prohibit employees and subcontractors from disposing of non-job related debris or materials
at the construction site.
Notify the owner of any illicit connections and illegal dumping or discharge incidents at the
time of discovery.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities, Developing Pollution Prevention Plans
and Best Management Practices, EPA 832-R-92005; IJSEPA, April 1992.
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Potable Water/ Irrigation
Description and Purpose
Potable Water/Irrigation consists of practices and procedures
to manage the discharge of potential pollutants generated
during discharges from irrigation water lines, landscape
irrigation, lawn or garden watering, planned and unplanned
discharges from potable water sources, water line flushing and
hydrant flushing
Suitable Applications
Implement this BMP whenever potable water or irrigation
water discharges occur at or enter a construction site.
NS-7
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
NS NonStomiwater
Management Control
WM Waste Management and
Metenals Poon Control
Legend:
1J Primary Objective
Secondary Objective
Targeted Constituents
Sediment Il
Niirients 11
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
None
Urn itations
None identified.
Implementation
Direct water from offsite sources around or through a
construction site, where feasible, in a way that minim ies
contact with the construction site.
Discharges from water line flushing should be reused for
landscaping purposes where feasible.
Shut off the water source to broken lines, sprinklers, or
valves as soon as possible to prevent excess water flow.
Protect downstream stormwater drainage systems and
watercourses from water pumped or bailed from trenches
excavated to repair water lines.
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NS-7 Potable Water/Irrigation
Inspect irrigated areas within the construction limits for excess watering. Adjust watering
times and schedules to ensure that the appropriate amount of water is being used and to
minimi7e runoff. Consider factors such as soil structure, grade, time of year, and type of
plant material in determining the proper amounts of water for a specific area.
Costs
Cost to manage potable water and irrigation are low and generally considered to be a normal
part of related activities.
Inspection and Maintenance
Inspect and verify that activity-based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and at two-week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect BMPs subject to non-stormwater discharges daily while non-stomiwater discharges
occur.
Repair broken water lines as soon as possible.
Inspect irrigated areas regularly for signs of erosion and/or discharge.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities, Developing Pollution Prevention Plans
and Best Management Practices, EPA 832-R-92005; LISEPA, April 1992.
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Objectives
EC Erosion Control
BE Sediment Cordial
TR Tracking Control
WE Wind Erosion Control
NS NonStormwater
Management Control
WM Wade Management and
Mateiiats Pollution Corirol
Legend:
lI Primary Objective
Secondary Objective
Targeted Constituents
Sediment
ents
Trash
Metals
Bacteria
Oil and Grease 11
Organics El
Potential Alternatives
None
Vehicle and Equipment Cleaning NS-8
L%AREA
L L
Description and Purpose.
Vehicle and equipment cleaning procedures and practices
eliminate or reduce the discharge of pollutants to stormwater
from vehicle and equipment cleaning operations. Procedures
and practices include but are not limited to: using offite
facilities; washing in designated, contained areas only;
eliminating discharges to the storm drain by infiltrating the
wash water; and training employees and subcontractors in
proper cleaning procedures.
Suitable Applications
These procedures are suitable on all construction sites where
vehicle and equipment cleaning is performed.
Limitations
Even phosphate-free, biodegradable soaps have been shown to
be toxic to fish before the soap degrades. Sending
vehicles/equipment offsite should be done in conjunction with
TR-1, Stabilized Construction Entrance/Exit.
Implementation
Other options to washing equipment onsite include contracting
with either an offsite or mobile commercial washing business.
These businesses may be better equipped to handle and dispose
of the wash waters properly. Performing this work offsite can
also be economical by eliminating the need for a separate washing
operation onsite.
If washing operations are to take place onsite, then:
.8 06
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NS-8 Vehicle and Equipment Cleaning
Use phosphate-free, biodegradable soaps.
Educate employees and subcontractors on pollution prevention measures.
Do not permit steam cleaning onsite. Steam cleaning can generate significant pollutant
concentrates.
Cleaning of vehicles and equipment with soap, solvents or steam should not occur on the
project site unless resulting wastes are fully contained and disposed of. Resulting wastes
should not be discharged or buried, and must be captured and recycled or disposed
according to the requirements of WM-io, Liquid Waste Management or WM-6, Hazardous
Waste Management, depending on the waste characteristics. Minimize use of solvents. Use
of diesel for vehicle and equipment cleaning is prohibited.
All vehicles and equipment that regularly enter and leave the construction site must be
cleaned offsite.
When vehicle and equipment washing and cleaning must occur onsite, and the operation
cannot be located within a structure or building equipped with appropriate disposal
facilities, the outside cleaning area should have the following characteristics:
- Located away from storm drain inlets, drainage facilities, or watercourses
- Paved with concrete or asphalt and bermed to contain wash waters and to prevent runon
and runoff
- Configured with a sump to allow collection and disposal of wash water
- No discharge of wash waters to storm drains or watercourses
- Used only when necessary
When cleaning vehicles and equipment with water.
- Use as little water as possible. High-pressure sprayers may use less water than a hose
and should be considered
- Use positive shutoff valve to minimize water usage
- Facility wash racks should discharge to a sanitary sewer, recycle system or other
approved discharge system and must not discharge to the storm drainage system,
watercourses, or to groundwater
Costs
Cleaning vehicles and equipment at an offsite facility may reduce overall costs for vehicle and
equipment cleaning by eliminating the need to provide similar services onsite. When onsite
cleaning is needed, the cost to establish appropriate facilities is relatively low on larger, long-
duration projects, and moderate to high on small, short-duration projects.
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Vehicle and Equipment Cleaning NS-8
Inspection and Maintenance
Inspect and verify that activity-based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are underway, inspect weekly
during the rainy season and at two-week intervals in the non-rainy season to verify
continued BMP implementation:
Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges
occur.
Inspection and maintenance is minimal, although some berm repair may be necessary.
Monitor employees and subcontractors throughout the duration of the construction project
to ensure appropriate practices are being implemented.
Inspect sump regularly and remove liquids and sediment as needed.
Prohibit employees and subcontractors from washing personal vehicles and equipment on
the construction site.
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Swisher, R.D. Surfactant Biodegradation, Marcel Decker Corporation, 1987.
January 2003 California Stormwathr BMP Handbook 3 of 3
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Vehicle and Equipment Fueling NS-9
FUELING
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
NS NoriStormwster
Management Control
WlYl Waste Management and
Materials Pollubon Confrol
Legend:
IJ Primary Objective
I1 Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease Ef
Organics
Potential Alternatives
None
Description and Purpose
Vehicle equipment fueling procedures and practices are
designed to prevent fuel spills and leaks, and reduce or
eliminate contamination of stormwater. This can be
accomplished by using offsite facilities, fueling in designated
areas only, enclosing or covering stored fuel, implementing spill
controls, and training employees and subcontractors in proper
fueling procedures.
Suitable Applications
These procedures are suitable on all construction sites where
vehicle and equipment fueling takes place.
Limitations
Onsite vehicle and equipment fueling should only be used
where it is impractical to send vehicles and equipment of1ite
for fueling. Sending vehicles and equipment offsite should be
done in conjunction withTR-i, Stabilized Construction
Entrance! Exit.
Implementation
Use offsite fueling stations as much as possible. These
businesses are better equipped to handle fuel and spills
properly. Performing this work offsite can also be
economical by eliminating the need for a separate fueling
area at a site.
Discourage "topping-off' of fuel tanks.
I.;LiI4jtk'., r',.' •' -
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NS-9 Vehicle and Equipment Fueling
Absorbent spill cleanup materials and spill kits should be available in fueling areas and on
fueling trucks, and should be disposed of properly alter use.
Drip pans or absorbent pads should be used during vehicle and equipment fueling, unless
the fueling is performed over an impermeable surface in a dedicated fueling area.
Use absorbent materials on small spills. Do not hose down or bury the spill. Remove the
adsorbent materials promptly and dispose of properly.
Avoid mobile fueling of mobile construction equipment around the site; rather, transport the
equipment to designated fueling areas. With the exception of tracked equipment such as
bulldozers and large excavators, most vehicles should be able to travel to a designated area
with little lost time.
Train employees and subcontractors in proper fueling and cleanup procedures.
When fueling must take place onsite, designate an area away from drainage courses to be
used. Fueling areas should be identified in the SWPPP.
Dedicated fueling areas should be protected from stormwater runon and mnof and should
be located at least 50 ft away from downstream drainage facilities and watercourses. Fueling
must be performed on level-grade areas.
Protect fueling areas with berms and dikes to prevent runon, runoff, and to contain spills.
Nozzles used in vehicle and equipment fueling should be equipped with an automatic shutoff
to control drips. Fueling operations should not be left unattended.
Use vapor recovery nozzles to help control drips as well as air pollution where required by
Air Quality Management Districts (AQMD).
Federal, state, and local requirements should be observed for any stationary above ground
storage tanks.
Costs
All of the above measures are low cost except for the capital costs of above ground tanks that
meet all local environmental, zoning, and fire codes.
Inspection and Maintenance
Vehicles and equipment should be inspected each day of use for leaks. Leaks should be
repaired immediately or problem vehicles or equipment should be removed from the project
site.
Keep ample supplies of spill cleanup materials orisite.
Immediately cleanup spills and properly dispose of contaminated soil and cleanup
materials.
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Vehicle and Equipment Fueling NS-9
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance,
Working Group Working Paper; USEPA, April 1992.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities, Developing Pollution Prevention Plans
and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.
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Vehicle & Equipment Maintenance NS-10
Objectives
EC Erosion Control
SE Sediment Control
TR Tracing Control
WE Wind Erosion Contra
NS NonStormwater
Management Control
Waste Management and WM Materials onContrci
Legend:
(l Primary Objective
IN Secondary Objective
Targeted Constituents
Description and Purpose Sediment Prevent or reduce the contamination of stormwater resulting N&ents L1 from vehicle and equipment maintenance by running a "dry Trash 11 and clean site". The best option would be to perform
maintenance activities at an offsite facility. If this option is not Metals
available then work should be performed in designated areas Bacteria
only, while providing cover for materials stored outside, Oil and Grease I1
checking for leaks and spills, and containing and cleaning up Organics L1
spills immediately. Employees and subcontractors must be
trained in proper procedures. Potential Alternatives
Suitable Applications None
These procedures are suitable on all construction projects
where an onsite yard area is necessary for storage and
maintenance of heavy equipment and vehicles.
Limitations
Onsite vehicle and equipment maintenance should only be used
where it is impractical to send vehicles and equipment ofiMte
for maintenance and repair. Sending vehicles/equipment
offsite should be done in conjunction with TR-1, Stabilized
Construction Entrance/Exit.
Outdoor vehicle or equipment maintenance is a potentially
significant source of stormwater pollution. Activities that can
contaminate stormwater include engine repair and service,
changing or replacement of fluids, and outdoor equipment storage
and parking (engine fluid leaks). For further information on
vehicle or equipment servicing, see NS-8, Vehicle and Equipment
Cleaning, and NS-9, Vehicle and Equipment Fueling.
iiii,
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NS-10 Vehicle& uipment Maintenance
Implementation
Use offsite repair shops as much as possible. These businesses are better equipped to handle
vehicle fluids and spills properly. Performing this work of1ite can also be economical by
eliminating the need for a separate maintenance area.
If maintenance must occur onsite, use designated areas, located away from drainage courses.
Dedicated maintenance areas should be protected from stormwater runon and runog and
should be located at least 50 ft from downstream drainage facilities and watercourses.
Drip pans or absorbent pads should be used during vehicle and equipment maintenance
work that involves fluids, unless the maintenance work is performed over an impermeable
surface in a dedicated maintenance area.
Place a stockpile of spill cleanup materials where it will be readily accessible.
All fueling trucks and fueling areas are required to have spill kits and/or use other spill
protection devices.
Use adsorbent materials on small spills. Remove the absorbent materials promptly and
dispose of properly.
Inspect onsite vehicles and equipment daily at startup for leaks, and repair immediately.
Keep vehicles and equipment clean; do not allow excessive build-up of oil and grease.
Segregate and recycle wastes, such as greases, used oil or oil filters, antifreeze, cleaning
solutions, automotive batteries, hydraulic and transmission fluids. Provide secondary
containment and covers for these materials if stored onsite.
Train employees and subcontractors in proper maintenance and spill cleanup procedures.
Drip pans or plastic sheeting should be placed under all vehicles and equipment placed on
docks, barges, or other structures over water bodies when the vehicle or equipment is
planned to be idle for more than i. hour.
a For long-term projects, consider using portable tents or covers over maintenance areas if
maintenance cannot be performed offsite.
Consider use of new, alternative greases and lubricants, such as adhesive greases, for chassis
lubrication and fifth-wheel lubrication.
Properly dispose ofused oils, fluids, lubricants, and spill cleanup materials.
Do not place used oil in a dumpster or pour into a storm drain or watercourse.
Properly dispose of or recycle used batteries.
Do not bury used tires.
a Repair leaks of fluids and oil immediately.
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Vehicle & Equipment Maintenance NS-10
Listed below is further information if you must perform vehicle or equipment maintenance
onsite.
Safer Alternative Products
Consider products that are less toxic or hazardous than regular products. These products
are often sold under an "enviiormientally friendly" label.
Consider use of grease substitutes for lubrication of truck fifth-wheels. Follow
manufacturers label for details on specific uses.
Consider use of plastic friction plates on truck fifth-wheels in lieu ofgrease. Follow
manufacturers label for details on specific uses.
Waste Reduction
Parts are often cleaned using solvents such as trichioroethylene, trichloroethsne, or methylene
chloride. Many of these cleaners are listed in California Toxic Rule as priority pollutants. These
materials are harmful and must not contaminate stormwater. They must be disposed of as a
hazardous waste. Reducing the number of solvents makes recycling easier and reduces
hazardous waste management costs. Often, one solvent can perform ajob as well as two
different solvents. Also, if possible, eliminate or reduce the amount of hazardous materials and
waste by substituting non-hazardous or less hazardous materials. For example, replace
chlorinated organic solvents with non-chlorinated solvents. Non-chlorinated solvents like
kerosene or mineral spirits are less toxic and less expensive to dispose of properly. Check the
list of active ingredients to see whether it contains chlorinated solvents. The "chior" term
indicates that the solvent is chlorinated. Also, try substituting a wire brush for solvents to clean
parts.
Recycling and Disposal
Separating wastes allows for easier recycling and may reduce disposal costs. Keep hazardous
wastes separate, do not mix used oil solvents, and keep chlorinated solvents (like,-
trichloroethane) separate from non-chlorinated solvents (like kerosene and mineral spirits).
Promptly transfer used fluids to the proper waste or recycling drums. Don't leave full drip pans
or other open containers lying around. Provide cover and secondary containment until these
materials can be removed from the site.
Oil filters can be recycled. Ask your oil supplier or recycler about recycling oil filters.
Do not dispose of extra paints and coatings by dumping liquid onto the ground or throwing it
into dumpsters. Allow coatings to dry or harden before disposal into covered dumpsters.
Store cracked batteries in a non-leaking secondary container. Do this with all cracked batteries,
even if you think all the acid has drained out. If you drop a battery, treat it as if it is cracked.
Put it into the containment area until you are sure it is not leaking.
Costs
All of the above are low cost measures. Higher costs are incurred to setup and maintain onsite
maintenance areas.
January 2003 California Stormwathr BMP Handbook 3 of 4
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NS-10 Vehicle & Equipment Maintenance
Inspection and Maintenance
Inspect and verify that activity-based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and at two-week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges
occur.
Keep ample supplies of spill cleanup materials onsite.
Maintain waste fluid containers in leak proof condition.
Vehicles and equipment should be inspected on each day of use. Leaks should be repaired
immediately or the problem vehicle(s) or equipment should be removed from the project
site.
Inspect equipment for damaged hoses and leaky gaskets routinely. Repair or replace as
needed.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Coastal Nonpoint Pollution Control Program; Program Development and Approval Guidance,
Working Group, Working Paper; USEPA, April 1992.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
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Concrete Curing NS-12
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
NS NonStomiwater
Management Control
WM Waste Management and
Materials Poluon Control
Legend:
10 Primary Objective
IN Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease (ZI
Organics
Description and Purpose
Concrete curing is used in the construction of structures such as
bridges, retaining walls, pump houses, large slabs, and
structured foundations. Concrete curing includes the use of
both chemical and water methods. Discharges of stormwater
and non-stormwater exposed to concrete during curing may
have a high pH and may contain chemicals, metals, and fines.
Proper procedures reduce or eliminate the contamination of
stormwater runoff during concrete curing.
Suitable Applications Potential Alternatives
Suitable applications include all projects where Portland None
Cement Concrete (PCC) and concrete curing chemicals are
placed where they can be exposed to rainfall, runoff from other
areas, or where runoff from the PCC will leave the site.
Limitations
None identified.
Implementation
Chemical Curing
Avoid over spray of curing compounds.
Minimize the drift of chemical cure as much as possible by
applying the curing compound close to the concrete surface.
Apply an amount of compound that covers the surface, but
does not allow any runoff of the compound.
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NS-12 Concrete Curing
Use proper storage and handling techniques for concrete curing compounds. Refer to WM-
1, Material Delivery and Storage.
Protect drain inlets prior to the application of curing compounds.
Refer to WM-4, Spill Prevention and Control
Water Curingfor Bridge Decks, Retaining Walls, and other Structures
Direct cure water away from inlets and watercourses to collection areas for infiltration or
other means of removal in accordance with all applicable permits.
Collect cure water at the top of slopes and transport or dispose of water in a non-erodible
manner. See EC-9 Earth Dikes and Drainage Swales, EC-1o, Velocity Dissipation Devices,
and EC-u, Slope Drains.
Utilize wet blankets or a similar method that maintains moisture while minimizing the use
and possible discharge of water.
Costs
All of the above measures are generally low cost.
Inspection and Maintenance
Inspect and verify that activity-based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and at two-week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges
occur.
Ensure that employees and subcontractors implement appropriate measures for storage,
handling, and use of curing compounds.
Inspect cure containers and spraying equipment for leaks.
References
Blue Print for a Clean Bay-Construction-Related Industries: Best Management Practices for
Stormwater Pollution Prevention; Santa Clara Valley Non Point Source Pollution Control
Program, 1992.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities, Developing Pollution Prevention Plans
and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.
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Concrete Finishing NS-13
Objectives
EC Erosion Control
SE Secimert Control
TR Tracking Control
WE Wind Erosion Control
NS NonStomiwater
Margement Control
WM Waste Mafleftand
Materials Poliiion Control
Legend:
0 Primary Objective
IN Secondary Objective
Description and Purpose
Concrete finishing methods are used for bridge deck
rehabilitation, paint removal, curing compound removal, and
final surface finish appearances. Methods include sand
blasting, shot blasting, grinding, or high pressure water
blasting. Stormwater and non-stormwater exposed to concrete
finishing by-products may have a high pH and may contain
chemicals, metals, and fines. Proper procedures and
implementation of appropriate BMPs can minimize the impact
that concrete-finishing methods may have on stomiwater and
non-stormwater discharges.
Suitable Applications
These procedures apply to all construction locations where
concrete finishing operations are performed.
Limitations
None identified.
Implementation
Collect and properly dispose of water from high-pressure
water blasting operations.
Collect contaminated water from blasting operations at the
top of slopes. Transport or dispose of contaminated water
while using BMPs such as those for erosion control. Refer to
EC-9, Earth Dikes and Drainage Swales, EC-lo, Velocity
Dissipation Devices, and EC-u, Slope Drains.
Targeted Constituents
Sediment
Ni*iien
Trash
Metals
Bacteria
Oil and Grease
Organics I1
Potential Alternatives
None
ii
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(~tktiT IAIØN
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NS-13 Concrete Finishing
Direct water from blasting operations away from inlets and watercourses to collection areas
fbr infiltration or other means of removal (dewatering). Refer to NS-2 De-Watering
Operations.
Protect inlets during sandblasting operations. Refer to SE-in, Storm Drain Inlet Protection.
Refer to WM-8, Concrete Waste Management for disposal of concrete based debris.
Minimize the drift of dust and blast material as much as possible by keeping the blasting
nozzle close to the surface.
When blast residue contains a potentially hazardous waste, refer to WM-6, Hazardous Waste
Management.
Costs
These measures are generally of low cost.
Inspection and Maintenance
Inspect and verify that activity-based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and at two-week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect BMPs subject to non-stormwater discharges daily while non-storrnwater discharges
occur.
Sweep or vacuum up debris from sandblasting at the end of each shift.
At the end of each work shift remove and contain liquid and solid waste from containment
structures, if any, and from the general work area
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Stomiwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities, Developing Pollution Prevention Plans
and Best Management Practices, EPA 832-R-92005; USEPA, April 1992.
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Objectives
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS NonStonnwater
Management Control
WM Waste Management and
Materials Po!luon Control
Legend:
0 Primary Objective
99 Secondary Objective
Targeted Constituents
Sediment
NLtriente 11
Trash ll
Metals
Bacteria
Oil and Grease I1
Organics
Potential Alternatives
None
Material Delivery and Storage WM-1
Description and Purpose
Prevent, reduce, or eliminate the discharge of pollutants from
material delivery and storage to the stormwater system or
watercourses by minimizing the storage of hazardous materials
onsite, storing materials in a designated area, installing
secondary containment, conducting regular inspections, and
training employees and subcontractors.
This best management practice covers only material delivery
and storage. For other information on materials, see WM-2,
Material Use, or WM-4, Spill Prevention and Control. For
information on wastes, see the waste management BMPs in this
section.
Suitable Applications
These procedures are suitable for use at all construction sites
with delivery and storage of the following materials:
Soil stabilizers and binders
Pesticides and herbicides
Fertilizers
Detergents
Plaster ell
Petroleum products such as fuel, oil and grease
Asphalt and concrete components
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WM-1 Material Delivery and Storage
Hazardous chemicals such as acids, lime, glues, adhesives, paints, solvents, and curing
compounds
Concrete compounds
Other materials that may be detrimental if released to the environment
Umitations
Space limitation may preclude indoor storage.
Storage sheds often must meet building and fire code requirements.
Implementation
The following steps should be taken to minimize risk:
Temporary storage area should be located away from vehicular traffic.
Material Safety Data Sheets (MSDS) should be supplied for all materials stored.
Construction site areas should be designated for material delivery and storage.
Material delivery and storage areas should be located near the construction entrances, away
from waterways, if possible.
- Avoid transport near drainage paths or waterways.
- Surrourid with earth berms. See EC-g, Earth Dikes and Drainage Swales.
- Place in an area which will be paved.
Storage of reactive, ignitable, or flammable liquids must comply with the fire codes of your
area. Contact the local Fire Marshal to review site materials, quantities, and proposed
storage area to determine specific requirements. See the Flammable and Combustible
Liquid Code, NFPA3o.
An up to date inventory of materials delivered and stored onsite should be kept
Hazardous materials storage onsite should be minimized.
Hazardous materials should be handled as infrequently as possible.
During the rainy season, consider storing materials in a covered area. Store materials in
secondary containments such as earthen dike, horse trough, or even a children' wading pool
for non-reactive materials such as detergents, oil, grease, and paints. Small amounts of
material may be secondarily contained in "bus boy" trays or concrete mixing trays.
Do not store chemicals, drums, or bagged materials directly on the ground. Place these
items on a pallet and, when possible, in secondary containment.
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Material Delivery and Storage WM-1
If drums must be kept uncovered, store them at a slight angle to reduce ponding of rainwater
on the lids to reduce corrosion. Domed plastic covers are inexpensive and snap to the top of
drums, preventing water from collecting.
Chemicals should be kept in their original labeled containers.
Employees and subcontractors should be trained on the proper material delivery and storage
practices.
Employees trained in emergency spill cleanup procedures must be present when dangerous
materials or liquid chemicals are unloaded.
If significant residual materials remain on the ground after construction is complete,
properly remove materials and any contaminated soil. See WM-7, Contaminated Soil
Management. lfthe area is to be paved, pave as soon as materials are removed to stabilize
the soil
Material StorageAreas and Practices
Liquids, petroleum products, and substances listed in 40 CFR Parts 110, 117, or 302 should
be stored in approved containers and drums and should not be overfi.11ed. Containers and
drums should be placed in temporary containment facilities for storage.
A temporary containment facility should provide for a spill containment volume able to
contain precipitation from a 25 year storm event, plus the greater of io% of the aggregate
volume of all containers or i00% of the capacity of the largest container within its boundary,
whichever is greater.
A temporary containment facility should be impervious to the materials stored therein for a
minimum contact time of 72 hours.
A temporary containment facility should be maintained free of accumulated rainwater and
spills. In the event of spills or leaks, accumulated rainwater and spills should be collected
and placed into drums. These liquids should be handled as a hazardous waste unless testing
determines them to be non-hazardous. All collected liquids or non-hazardous liquids should
be sent to an approved disposal site.
Sufficient separation should be provided between stored containers to allow for spill cleanup
and emergency response access.
Incompatible materials, such as chlorine and ammonia, should not be stored in the same
temporary containment facility.
Throughout the rainy season, each temporary containment facility should be covered during
non-working days, prior to, and during rain events.
Materials should be stored in their original containers and the original product labels should
be maintained in place in a legible condition. Damaged or otherwise illegible labels should
be replaced immediately.
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WM-1 Material Delivery and Storage
Bagged and boxed materials should be stored on pallets and should not be allowed to
accumulate on the ground. To provide protection from wind and rain throughout the rainy
season, bagged and boxed materials should be covered during non-working days and prior to
and during rain events.
Stockpiles should be protected in accordance with WM-a Stockpile Management.
Materials should be siD red indoors within existing structures or sheds when available.
Proper storage instructions should be posted at all times in an open and conspicuous
location.
An ample supply of appropriate spill clean up material should be kept near storage areas.
Also see WM-6, Hazardous Waste Management for storing of hazardous materials.
Material Delivery Practices
Keep an accurate, up-to-date inventory of material delivered and stored onsite.
Arrange for employees trained in emergency spill cleanup procedures to be present when
dangerous materials or liquid chemicals are unloaded.
Spill Cleanup
Contain and clean up any spill immediately.
Properly remove and dispose of any hazardous materials or contaminated soil if significant
residual materials remain on the ground after construction is complete. See W1\4-7,
Contaminated Soil Management.
See WM-4, Spill Prevention and Control, for spills of chemicals and/or hazardous materials.
Cost
The largest cost of implementation maybe in the construction of a materials storage area
that is covered and provides secondary containment.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation.
Keep an ample supply of spill cleanup materials near the storage area.
Keep storage areas clean, well organized, and equipped with ample cleanup supplies as
appropriate for the materials being stored.
Repair or replace perimeter controls, containment structures, covers, and liners as needed to
maintain proper function
40f 5 California Stormwatar BMP Handbook January 2003
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Material Delivery and Storage WM-1
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance,
Working Group Working Paper; USEPA, April 1992.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities; Developing Pollution Prevention Plans
and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.
January 2003 California Stormwathr BMP Handbook 5 of 5
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Objectives
EC Erosion Control
SE Sediment Control
IC Tracking Control
WE Wind Erosion Control
NS NonStoimwater
Management Control
WIVI Waste Management and
Matenals Pollution Control
Legend:
10 Primary Objective
IN Secondary Objective
Targeted Constituents
Sediment 11
Ntlrients L1
Trash 11
Metals ll
Bacteria
Oil and Grease C1
Organics
Potential Alternatives
None
Material Use WM-2
Description and Purpose
Prevent or reduce the discharge of pollutants to the storm drain
system or watercourses from material use by using alternative
products, minimizing hazardous material use onsite, and
training employees and subcontractors.
Suitable Applications
This BMP is suitable for use at all construction projects. These
procedures apply when the following materials are used or
prepared onsite:
Pesticides and herbicides
Fertilizers
Detergents
Plaster
Petroleum products such as fuel, oil, and grease
Asphalt and other concrete components
Other hazardous chemicals such as acids, lime, glues,
adhesives, paints, solvents, and curing compounds
Concrete compounds
-
Other materials that may be detrimental if released to the
environment
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WM-2 Material Use
Limitations
Safer alternative building and construction products may not be available or suitable in every
instance.
Implementation
The following steps should be taken to minimize risk:
• Minimi7e use of hazardous materials onsite.
Follow manufacturer instructions regarding uses, protective equipment, ventilation,
flammability, and mixing of chemicals.
Train personnel who use pesticides. The California Department of Pesticide Regulation and
county agricultural commissioners license pesticide dealers, certify pesticide applicators,
and conduct onsite inspections.
Do not over-apply fertilizers, herbicides, and pesticides. Prepare only the amount needed.
Follow the recommended usage instructions. Over-application is expensive and
environmentally harmful. Unless on steep slopes, till fertilizers into the soil rather than
hydro seeding. Apply surface dressings in several smaller applications, as opposed to one
large application, to allow time for infiltration and to avoid excess material being carried
ofite by runoff. Do not apply these chemicals just before it rains.
Train employees and subcontractors in proper material use.
Supply Material Safety Data Sheets (MSDS) for all materials.
Dispose of latex paint and paint cans, used brushes, rags, absorbent materials, and drop
cloths, when thoroughly dry and are no longer hazardous, with other construction debris.
Do not remove the original product label; it contains important safety and disposal
information. Use the entire product before disposing of the container.
Mix paint indoors or in a containment area Never clean paintbrushes or rinse paint
containers into a street, gutter, storm drain, or watercourse. Dispose of any paint thinners,
residue, and sludge(s) that cannot be recycled, as hazardous waste.
For water-based paint, clean brushes to the extent practicable, and rinse to a drain leading to
a sanitary sewer where permitted, or into a concrete washout pit or temporary sediment
trap. For oil-based paints, clean brushes to the extent practicable, and filter and reuse
thinners and solvents.
Use recycled and less hazardous products when practical Recycle residual paints, solvents,
non-treated lumber, and other materials.
Use materials only where and when needed to complete the construction activity. Use safer
alternative materials as much as possible. Reduce or eliminate use of hazardous materials
onsite when practical.
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Material Use WM-2
Require contractors to complete the "Report of Chemical Spray Forms" when spraying
herbicides and pesticides.
Keep an ample supply of spill clean up material near use areas. Train employees in spill
clean up procedures.
Avoid exposing applied materials to rainfall and runoff unless sufficient time has been
allowed for them to thy.
Costs
All of the above are low cost measures.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and at two—week intervals in the non-rainy season to verify
continued BM implementation.
. Maintenance of this best management practice is minimal.
Spot check employees and subcontractors throughout the job to ensure appropriate practices
are being employed.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Coastal Nonpoint Pollution Control Program: Program Development and Approval Guidance,
Working Group Working Paper; USEPA, April 1992.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities; Developing Pollution Prevention Plans
and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.
January 2003 California Stormwatr BMP Handbook 3 of 3
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Objectives
EC Erosion Control
SE Sediment Contra
IC Tracking Control
WE Wind Erosion Control
NS NonStormwater
Management Control
WM Waste Management and
Mateilats PoUtion Cortol
Legend:
Primary Objective
19 Secondary Objective
Targeted Constituents
Sediment 11
Nutilents 11
Trash IZI
Metals I1
Bacteria
Oil and Grease 11
Organics C1
Potential Alternatives
None
Stockpile Manaciernent WM-3
-
Description and Purpose
Stockpile Management procedures and practices are designed
to reduce or eliminate air and stormwater pollution from
stockpiles of soil, paving materials such as portland cement
concrete (FCC) rubble, asphalt concrete (ACI asphalt concrete
rubble, aggregate base, aggregate sub base or pre-mixed
aggregate, asphalt minder (so called "cold mix" asphalt), and
pressure treated wood.
Suitable Applications
Implement in all projects that stockpile soil and other
materials.
Limitations
None identified.
Implementation
Protection of stockpiles is a year-round requirement. To
properly manage stockpiles:
Locate stockpiles a minimum of 50 ft away from
concentrated flows of stormwater, drainage courses, and
inlets.
Protect all stockpiles from stormwater runon using a
temporary perimeter sediment barrier such as berms, dikes,
fiber rolls, silt fences, sandbag, gravel bags, or straw bale
barriers.
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CVA*~[,.% ..i N
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WM-3 Stockpile Management
Implement wind erosion control practices as appropriate on all stockpiled material. For
specific information, see WE-1, Wind Erosion Control
Manage stockpiles of contaminated soil in accordance with WM-7, Contaminated Soil
Management.
Place bagged materials on pallets and under cover.
Protection ofNon-Active Stockpiles
Non-active stockpiles of the identified materials should be protected further as follows:
Soil stockpiles
During the rainy season, soil stockpiles should be covered or protected with soil stabilization
measures and a temporary perimeter sediment barrier at all times.
During the non-rainy season, soil stockpiles should be covered or protected with a
temporary perimeter sediment barrier prior to the onset of precipitation.
Stockpiles ofPortland cement concrete rubble, asphalt concrete, asphalt concrete rubble,
aggregate base, or aggregate sub base
During the rainy season, the stockpiles should be covered or protected with a temporary
perimeter sediment barrier at all times.
During the non-rainy season, the stockpiles should be covered or protected with a temporary
perimeter sediment barrier prior to the onset of precipitation.
Stockpiles of "cold mix"
During the rainy season, cold mix stockpiles should be placed on and covered with plastic or
comparable material at all times.
During the non-rainy season, cold mix stockpiles should be placed on and covered with
plastic or comparable material prior to the onset of precipitation.
Stockpiles/Storage ofpressure treated wood with copper, chromium, and arsenic or
ammonical, copper, zinc, and arsenate
During the rainy season, treated wood should be covered with plastic or comparable
material at all times.
During the non-rainy season, treated wood should be covered with plastic or comparable
material at all times and cold mix stockpiles should be placed on and covered with plastic or
comparable material prior to the onset of precipitation.
Protection ofActive Stockpiles
Active stockpiles of the identified materials should be protected further as follows:
All stockpiles should be protected with a temporary linear sediment barrier prior to the
onset of precipitation.
Stockpiles of "cold mix" should be placed on and covered with plastic or comparable
material prior to the onset of precipitation.
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Stockpile Management WM-3
Costs
All of the above are low cost measures.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation
Repair and/or replace perimeter controls and covers as needed to keep them functioning
properly.
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
p
January 2003 California Stormwathr BMP Handbook 3 of 3
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Objectives
EC Erosion Control
SE Sediment Control
IC Tracking Confrol
WE Wind Erosion Control
NS NonStoimwater
Management Control
Waste Management and WM Materials Pollution Control
Legend:
II Primary Objective
IN Secondary Objective
Targeted Constituents
Sediment 11
Nutrients EZ
Trash
Metals
Bacteria
Oil and Grease F1
Organics
Potential Alternatives
None
Spill Prevention and Control WM-4
Description and Purpose
Prevent or reduce the discharge of pollutants to drainage
systems or watercourses from leaks and spills by reducing the
chance for spills, stopping the source of spills, containing and
cleaning up spills, properly disposing of spill materials, and
training employees.
This best management practice covers only spill prevention and
control. However, WM-1, Materials Delivery and Storage, and
WM-2, Material Use, also contain useful information,
particularly on spill prevention. For information on wastes, see
the waste management BMPs in this section.
Suitable Applications
This BMP is suitable for all construction projects. Spill control
procedures are implemented anytime chemicals or hazardous
substances are stored on the construction site, including the
following materials:
. Soil stabilizers/binders
Dust palliatives
Herbicides
Growth inhibitors
Fertilizers
Deicing/anti-icing chemicals
Iii is
QAL
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ill Prevention and Control WM-4
Fuels
Lubricants
Other petroleum distillates
Limitations
In some cases it maybe necessary to use a private spill cleanup company.
• This BMP applies to spills caused by the contractor and subcontractors.
Procedures and practices presented in this BMP are general. Contractor should identify
appropriate practices for the specific materials used or stored onsite
Implementation
The following steps will help reduce the stormwater impacts of leaks and spills:
Education
in Be aware that different materials pollute in different amounts. Make sure that each
employee knows what a "significant spill" is for each material they use, and what is the
appropriate response for "significant" and "insignificant" spills.
Educate employees and subcontractors on potential dangers to humans and the
environment from spills and leaks.
Hold regular meetings to discuss and reinforce appropriate disposal procedures (incorporate
into regular safety meetings).
Establish a continuing education program to indoctrinate new employees.
Have contractor's superintendent or representative oversee and enforce proper spill
prevention and control measures.
General Measures
To the extent that the work can be accomplished safely, spills of oil, petroleum products,
substances listed under 40 CFR parts 110,117, and 302, and sanitary and septic wastes
should be contained and cleaned up immediately.
Store hazardous materials and wastes in covered containers and protect from vandalism.
Place a stockpile of spill cleanup materials where it will be readily accessible.
Train employees in spill prevention and cleanup.
Designate responsible individuals to oversee and enforce control measures.
Spills should be covered and protected from stormwater runon during rainfall to the extent
that it doesn't compromise cleanup activities.
Do not bury or wash spills with water.
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Spill Prevention and Control WM-4
Store and dispose of used clean up materials, contaminated materials, and recovered spill
material that is no longer suitable for the intended purpose in conformance with the
provisions in applicable BMPs.
Do not allow water used for cleaning and decontamination to enter storm drains or
watercourses. Collect and dispose of contaminated water in accordance with WM-io, Liquid
Waste Management.
Contain water overflow or minor water spillage and do not allow it to discharge into
drainage facilities or watercourses.
Place proper storage, cleanup, and spill reporting instructions for hazardous materials
stored or used on the project site in an open, conspicuous, and accessible location.
Keep waste storage areas clean, well organized, and equipped with ample cleanup supplies
as appropriate for the materials being stored. Perimeter controls, containment structures,
cover; and liners should be repaired or replaced as needed to maintain proper function.
Cleanup
Cleanup leaks and spills immediately.
Use a rag for small spills on paved surfaces, a damp mop for general cleanup, and absorbent
material for larger spills. If the spilled material is hazardous, then the used cleanup
materials are also hazardous and must be sent to either a certified laundry (rags) or disposed
of as hazardous waste.
Never hose down or bury dry material spills. Clean up as much of the material as possible
and dispose of properly. See the waste management BMPs in this section for specific
information.
Minor Spills
Minor spills typically involve small quantities of oil, gasoline, paint etc. which can be
controlled by the first responder at the discovery of the spill
Use absorbent materials on small spills rather than hosing down or burying the spill.
Absorbent materials should be promptly removed and disposed of properly.
Follow the practice below for a minor spill-
- Contain the spread of the spill.
- Recover spilled materials.
- Clean the contaminated area and properly dispose of contaminated materials.
Semi-Sign jfieant Spills
Semi-significant spills still can be controlled by the first responder along with the aid of
other personnel such as laborers and the foreman, etc. This response may require the
cessation of all other activities.
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ill Prevention and Control WM-4
Spills should be cleaned up immediately:
- Contain spread of the spill.
- Notify the project foreman immediately.
- If the spill occurs on paved or impermeable surfaces, clean up using "dry" methods
(absorbent materials, cat litter and/or rags). Contain the spill by encircling with
absorbent materials and do not let the spill spread widely.
- If the spill occurs in dirt areas, immediately contain the spill by constructing an earthen
dike. Dig up and properly dispose of contaminated soil.
- If the spill occurs during rain, cover spill with tarps or other material to prevent
contaminating runoff.
Sign jficant/Hazardous Spills
For significant or hazardous spills that cannot be controlled by personnel in the immediate
vicinity, the following steps should be taken:
- Notify the local emergency response by dialing 911. In addition to 911, the contractor will
notify the proper county officials. It is the contractor's responsibility to have all
emergency phone numbers at the construction site.
- Notify the Governor's Office of Emergency Services Warning Center, (916) 845-8911.
- For spills of federal reportable quantities, in conformance with the requirements in 40
CFR parts 110,119, and 302, the contractor should notify the National Response Center
at (800) 424-8802.
- Notification should first be made by telephone and followed up with a written report.
- The services of a spills contractor or a Haz-Mat team should be obtained immediately.
Construction personnel should not attempt to clean up until the appropriate and
qualified staffs have arrived at the job site.
- Other agencies which may need to be consulted include, but are not limited to, the Fire
Department, the Public Works Department, the Coast Guard, the Highway Patrol, the
City/County Police Department, Department of Toxic Substances, California Division of
Oil and Gas, Cal/OSHA etc.
Reporting
Report significant spills to local agencies, such as the Fire Department, they can assist in
cleanup.
Federal regulations require that any significant oil spill into a water body or onto an
adjoining shoreline be reported to the National Response Center (NRC) at 800-424-8802
(24 hours).
Use the following measures related to specific activities:
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Spill Prevention and Control WM-4
Vehicle and Equipment Maintenance
If maintenance must occur onsite, use a designated area and a secondary containment;
located away from drainage courses, to prevent the runon of stormwater and the runoff of
spills.
Regularly inspect onsite vehicles and equipment for leaks and repair immediately
Check incoming vehicles and equipment (including delivery trucks, and employee and
subcontractor vehicles) for leaking oil and fluids. Do not allow leaking vehicles or
equipment onsite.
Always use secondary containment, such as a drain pan or drop cloth, to catch spills or leaks
when removing or changing fluids.
Place drip pans or absorbent materials under paving equipment when not in use.
Use absorbent materials on small spills rather than hosing down or burying the spill.
Remove the absorbent materials promptly and dispose of properly.
Promptly transfer used fluids to the proper waste or recycling drums. Dont leave full drip
pans or other open containers lying around
Oil filters disposed of in trashcans or dumpsters can leak oil and pollute stormwater. Place
the oil filter in a funnel over a waste oil-recycling drum to drain excess oil before disposal.
Oil filters can also be recycled. Ask the oil supplier or recycler about recycling oil filters.
Store cracked batteries in a non-leaking secondary container. Do this with all cracked
batteries even if you think all the acid has drained out. If you drop a battery, treat it as if it is
cracked. Put it into the containment area until you are sure it is not leaking.
Vehicle and Equipment Fueling
If fueling must occur onsite, use designate areas, located away from drainage courses, to
prevent the runon of stormwater and the runoff of spills.
Discourage "topping off' of fuel tanks.
Always use secondary containment, such as a drain pan, when fueling to catch spills! leaks.
Costs
Prevention of leaks and spills is inexpensive. Treatment and/ or disposal of contaminated soil
or water can be quite expensive.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation
Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges
occur.
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Spill Prevention and Control WM-4
Keep ample supplies of spill control and cleanup materials onsite, near storage, unloading
and maintenance areas.
Update your spill prevention and control plan and stock cleanup materials as changes occur
in the types of chemicals onsite.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities; Developing Pollution Prevention Plans
and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.
6 of 6 California Stormwatr BMP Handbook January 2003
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Solid Waste Management
Description and Purpose
Solid waste management procedures and practices are designed
to prevent or reduce the discharge of pollutants to stormwater
from solid or construction waste by providing designated waste
collection areas and containers, arranging for regular disposal,
and training employees and subcontractors.
Suitable Applications
This BMP is suitable for construction sites where the following
wastes are generated or stored:
Solid waste generated from trees and shrubs removed
during land clearing demolition of existing structures
(rubble), and building construction
Packaging materials including wood, paper, and plastic
Scrap or surplus building materials including scrap metals,
rubber, plastic, glass pieces and masonry products
Domestic wastes including food containers such as beverage
cans, coffee cups, paper bag, plastic wrappers, and
cigarettes
Construction wastes including brick, mortar, timber, steel
and metal scraps, pipe and electrical cuttings, non-hazardous
equipment parts, styrofoam and other materials used to
transport and package construction materials
WM-5
Objectives
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS NoriStonnwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
IJ Secondary Objective
Targeted Constituents
Sediment El
Nutrients El
Trash El
Metals El
Bacteria
Oil and Grease El
Organics El
Potential Alternatives
None
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WM-5 Solid Waste Management
Highway planting wastes, including vegetative material, plant containers, and packaging
materials
Limitations
Temporary stockpiling of certain construction wastes may not necessitate stringent drainage
related controls during the non-rainy season or in desert areas with low rainfall.
Implementation
The following steps will help keep a clean site and reduce stormwater pollution:
• Select designated waste collection areas onsite.
Inform trash-hauling contractors that you will accept only watertight dumpsters for onsite
use. Inspect dumpsters for leaks and repair any dumpster that is not watertight.
Locate containers in a covered area or in a secondary containment
Provide an adequate number of containers with lids or covers that can be placed over the
container to keep rain out or to prevent loss of wastes when it is windy.
Plan for additional containers and more frequent pickup during the demolition phase of
construction.
Collect site trash daily, especially during rainy and windy conditions.
Remove this solid waste promptly since erosion and sediment control devices tend to collect
litter.
Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids,
pesticides, additives, curing compounds) are not disposed of in dumpsters designated for
construction debris.
Do not hose out dumpsters on the construction site. Leave dumpster cleaning to the trash
hauling contractor.
Arrange for regular waste collection before containers overflow.
Clean up immediately if a container does spill.
Make sure that construction waste is collected, removed, and disposed of only at authorized
disposal areas.
Education
Have the contractor's superintendent or representative oversee and enforce proper solid
waste management procedures and practices.
Instruct employees and subcontractors on identification of solid waste and hazardous waste.
Educate employees and subcontractors on solid waste storage and disposal procedures.
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Solid Waste Management WM-5
Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular
safety meetings).
Require that employees and subcontractors follow solid waste handling and storage
procedures.
Prohibit littering by employees, subcontractors, and visitors.
Minimize production of solid waste materials wherever possible.
Collection, Storage, and Disposal
Littering on the project site should be prohibited.
To prevent clogging of the storm drainage system, litter and debris removal from drainage
grates, trash racks, and ditch lines should be a priority.
Trash receptacles should be provided in the contractor's yard, field trailer areas, and at
locations where workers congregate for lunch and break periods.
Litter from work areas within the construction limits of the project site should be collected
and placed in watertight dumpsters at least weekly, regardless of whether the litter was
generated by the contractor, the public, or others. Collected litter and debris should not be
placed in or next to drain inlets, stormwater drainage systems, or watercourses.
Dumpsters of sufficient size and number should be provided to contain the solid waste
generated by the project.
Full dumpsters should be removed from the project site and the contents should be disposed
of by the trash hauling contractor.
Construction debris and waste should be removed from the site biweekly or more frequently
as needed.
Construction material visible to the public should be stored or stacked in an orderly manner.
Stormwater runon should be prevented from contacting stored solid waste through the use
of berms, dikes, or other temporary diversion structures or through the use of measures to
elevate waste from site surfaces.
Solid waste storage areas should be located at least 50 ft from drainage facilities and
watercourses and should not be located in areas prone to flooding or ponding.
Except during fair weather, construction and highway planting waste not stored in
watertight dumpsters should be securely covered from wind and rain by covering the waste
with tarps or plastic.
Segregate potentially hazardous waste from non-hazardous construction site waste.
Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids,
pesticides, additives, curing compounds) are not disposed of in dumpsters designated for
construction debris.
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WM-5 Solid Waste Management
For disposal of hazardous waste, see WM-6, Hazardous Waste Management Have
hazardous waste hauled to an appropriate disposal and/or recycling facility.
Salvage or recycle useful vegetation debris, packaging and surplus building materials when
practical. For example, trees and shrubs from land clearing can be used as a brush barrier,
or converted into wood chips, then used as mulch on graded areas. Wood pallets, cardboard
boxes, and construction scraps can also be recycled.
Costs
All of the above are low cost measures.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges
occur
Inspect construction waste area regularly.
Arrange for regular waste collection.
References
Processes, Procedures and Methods to Control Pollution Resulting from All Construction
Activity, 430/9-73-007, USEPA, 1973.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities; Developing Pollution Prevention Plans
and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.
4of 4 California Stormwater BMP Handbook January 2003
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Objectives
EC Erosion Control
SE Sediment Control
IC Tracking Control
WE Wind Erosion Control
NS NonStormwater
Margement Control
WM Materials
Waste Management and
on Control
Legend:
Primary Objective
IN Secondary Objective
Hazardous Waste Management WM-6
Description and Purpose
Prevent or reduce the discharge of pollutants to stormwater from
hazardous waste through proper material use, waste disposal,
and training of employees and subcontractors.
Suitable Applications
This best management practice (BMP) applies to all construction
projects. Hazardous waste management practices are
implemented on construction projects that generate waste from
the use of-
Targeted Constituents
Sediment
Nutrients
Trash 11
Metals
Bacteria
Oil and Grease
Organics [1
Potential Alternatives
- Petroleum Products
- Concrete Curing Compounds
- Palliatives
- Septic Wastes
- Stains
- Wood Preservatives
- Asphalt Products
- Pesticides
- Acids
- Paints
- Solvents
- RoofingTar
None
- Any materials deemed a hazardous waste in California,
Title 22 Division 4.5, or listed in 40 CFR Parts 110,117,
261, Or 302
."..'. it....
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Hazardous Waste Management WM-6
In addition, sites with existing structures may contain wastes, which must be disposed of in
accordance with federal, state, and local regulations. These wastes include:
Sandblasting grit mixed with lead-, cadmium-, or chromium-based paints
Asbestos
PCBs (particularly in older transformers)
Limitations
Hazardous waste that cannot be reused or recycled must be disposed of by a licensed
hazardous waste hauler.
Nothing in this BMP relieves the contractor from responsibility for compliance with federal,
state, and local laws regarding storage, handling, transportation, and disposal of hazardous
wastes.
This BMP does not cover aerially deposited lead (ADL) soils. For ADL soils refer to WM-7,
Contaminated Soil Management.
Implementation
The following steps will help reduce stormwater pollution from hazardous wastes:
Material Use
Wastes should be stored in sealed containers constructed of a suitable material and should
be labeled as required by Title 22 CCR, Division 4.5 and 49 CFR Parts 172,173, 178, and 179.
All hazardous waste should be stored, transported, and disposed as required in Title 22 CCR,
Division 4.5 and 49 CFR 261-263.
Waste containers should be stored in temporary containment facilities that should comply
with the following requirements:
- Temporary containment facility should provide for a spill containment volume equal to
1.5 times the volume of all containers able to contain precipitation from a 25 year storm
event, plus the greater of io% of the aggregate volume of all containers or i00% of the
capacity of the largest tank within its boundary, whichever is greater.
- Temporary containment facility should be impervious to the materials stored there for a
minimum contact time of 72 hours.
- Temporary containment facilities should be maintained free of accumulated rainwater
and spills. In the event of spills or leaks, accumulated rainwater and spills should be
placed into drums after each rainfall. These liquids should be handled as a hazardous
waste unless testing determines them to be non-hazardous. Non-hazardous liquids
should be sent to an approved disposal site.
- Sufficient separation should be provided between stored containers to allow for spill
cleanup and emergency response access.
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Hazardous Waste Management WM-6
- Incompatible materials, such as chlorine and ammonia, should not be stored in the same
temporary containment facility.
- Throughout the rainy season, temporary containment facilities should be covered during
non-working days, and prior to rain events. Covered facilities may include use of plastic
tarps for small facilities or constructed roofs with overhangs.
. Drums should not be overfilled and wastes should not be mixed.
Unless watertight, containers of cliy waste should be stored on pallets.
Do not over-apply herbicides and pesticides. Prepare only the amount needed. Follow the
recommended usage instructions. Over application is expensive and environmentally
harmful Apply surface dressings in several smaller applications, as opposed to one large
application. Allow time for infiltration and avoid excess material being carried offsite by
runoff. Do not apply these chemicals just before it rains. People applying pesticides must be
certified in accordance with federal and state regulations.
Paint brushes and equipment for water and oil based paints should be cleaned within a
contained area and should not be allowed to contaminate site soils, watercourses, or
drainage systems. Waste paints, thinners, solvents, residues, and sludges that cannot be
recycled or reused should be disposed of as hazardous waste. When thoroughly dry, latex
paint and paint cans, used brushes, rags, absorbent materials, and drop cloths should be
disposed of as solid waste.
Do not clean out brushes or rinse paint containers into the dirt, street, gutter, storm drain,
or stream. "Paint out" brushes as much as possible. Rinse water-based paints to the
sanitary sewer. Filter and reuse thinners and solvents. Dispose of excess oil-based paints
and sludge as hazardous waste.
The following actions should be taken with respect to temporary contaminant:
- Ensure that adequate hazardous waste storage volume is available.
- Ensure that hazardous waste collection containers are conveniently located.
- Designate hazardous waste storage areas onsite away from storm drains or watercourses
and away from moving vehicles and equipment to prevent accidental spills.
- Minimi2e production or generation of hazardous materials and hazardous waste on the
job site.
- Use containment berms in fueling and maintenance areas and where the potential for
spills is high.
- Segregate potentially hazardous waste from non-hazardous construction site debris.
- Keep liquid or semi-liquid hazardous waste inappropriate containers (closed drums or
similar) and undercover.
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Hazardous Waste Management WM-6
- Clearly label all hazardous waste containers with the waste being stored and the date of
accumulation.
- Place hazardous waste containers in secondary containment.
- Do not allow potentially hazardous waste materials to accumulate on the ground.
- Do not mix wastes.
- Use all of the product before disposing of the container.
- Do not remove the original product label; it contains important safety and disposal
information.
WasteRecycling Disposal
Select designated hazardous waste collection areas onsite.
Hazardous materials and wastes should be stored in covered containers and protected from
vandalism.
Place hazardous waste containers in secondary containment
Do not mix wastes, this can cause chemical reactions, making recycling impossible and
complicating disposal.
Recycle any useful materials such as used oil or water-based paint.
Make sure that toxic liquid wastes (used oils, solvents, and paints) and chemicals (acids,
pesticides, additives, curing compounds) are not disposed of in dumpsters designated for
construction debris.
Arrange for regular waste collection beibre containers overflow.
Make sure that hazardous waste (e.g., excess oil-based paint and sludge) is collected,
removed, and disposed of only at authorized disposal areas.
Disposal Procedures
Waste should be disposed of by a licensed hazardous waste transporter at an authorized and
licensed disposal facility or recycling facility utilizing properly completed Uniform
Hazardous Waste Manifest forms.
A Department of Health Services certified laboratory should sample waste to determine the
appropriate disposal facility.
Properly dispose of rainwater in secondary containment that may have mixed with
hazardous waste.
Attention is directed to "Hazardous Material, Contaminated Material, and "Aerially
Deposited Lead" of the contract documents regarding the handling and disposal of
hazardous materials.
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Hazardous Waste Management WM-6
Education
Educate employees and subcontractors on hazardous waste storage and disposal procedures.
Educate employees and subcontractors on potential dangers to humans and the
environment from hazardous wastes.
Instruct employees and subcontractors on safety procedures for common construction site
hazardous wastes.
Instruct employees and subcontractors in identification of hazardous and solid waste.
Hold regular meetings to discuss and reinforce hazardous waste management procedures
(incorporate into regular safety meetings).
The contractor's superintendent or representative should oversee and enforce proper
hazardous waste management procedures and practices.
Make sure that hazardous waste is collected, removed, and disposed of only at authorized
disposal areas.
Warning signs should be placed in areas recently treated with chemicals.
Place a stockpile of spill cleanup materials where it will be readily accessible.
If a container does spill, clean up immediately.
Costs
All of the above are low cost measures.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two week intervals in the non-rainy season to verify
continued BMP implementation.
Inspect BMPs subject to non-stormwater discharge daily while non-stormwater discharges
occur
Hazardous waste should be regularly collected.
A foreman or construction supervisor should monitor onsite hazardous waste storage and
disposal procedures.
Waste storage areas should be kept clean, well organized, and equipped with ample cleanup
supplies as appropriate for the materials being stored.
Perimeter controls, containment structures, covers, and liners should be repaired or
replaced as needed to maintain proper function.
Hazardous spills should be cleaned up and reported in conformance with the applicable
Material Safety Data Sheet (MSDS) and the instructions posted at the project site.
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Hazardous Waste Management WM-6
The National Response Center, at (8o0) 24-8802, should be notified of spills of federal
reportable quantities in conformance with the requirements in 40 CFR parts 110,117, and
302. Also notify the Governors Office of Emergency Services Warning Center at (916)845-
89u.
A copy of the hazardous waste manifests should be provided.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Processes, Procedures and Methods to Control Pollution Resulting from All Construction
Activity, 430/9-73-007, USEPA, 1973.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities; Developing Pollution Prevention Plans
and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.
6 of 6 California Stormwater BMP Handbook January 2003
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Objectives
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS NonStoimwater
Management Control
WM Waste Management and
Materials PoOuon Control
Legend:
lI Primary Objective
19 Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash Il
Metals
Bacteria ll
Oil and Grease
Organics I1
Potential Alternatives
None
Contaminated Soil Management WM-7
Description and Purpose
Prevent or reduce the discharge of pollutants to stormwater
from contaminated soil and highly acidic or alkaline soils by
conducting pre-construction surveys, inspecting excavations
regularly, and remediating contaminated soil promptly.
Suitable Applications
Contaminated soil management is implemented on
construction projects in highly urbanized or industrial areas
where soil contamination may have occurred due to spills, illicit
discharges, aerial deposition, past use and leaks from
underground storage tanks.
Limitations
Contaminated soils that cannot be treated onsite must be
disposed of offsite by a licensed hazardous waste hauler. The
presence of contaminated soil may indicate contaminated water
as well. See NS-2, Dewate ring Operations, for more
information.
The procedures and practices presented in this BMP are
general. The contractor should identify appropriate practices
and procedures for the specific contaminants known to exist or
discovered onsite.
Implementation
Most owners and developers conduct pre-construction
environmental assessments as a matter of routine. Contaminated
soils are often identified during project planning and development :
with known locations identified in the plans, specifications and in
the SWPPP. The contractor should review applicable reports and .
investigate appropriate call-outs in the plans, specifications, and a a
L .. .1% .t%.t'
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Contaminated Soil Management WM-7
SWPPP. Recent court rulings holding contractors liable fbr cleanup costs when they
unknowingly move contaminated soil highlight the need for contractors to confirm a site
assessment is completed before earth moving begins.
The following steps will help reduce stormwater pollution from contaminated soil:
Conduct thorough, pre-construction inspections of the site and review documents related to
the site. If inspection or reviews indicated presence of contaminated soils, develop a plan
before starting work.
Look for contaminated soil as evidenced by discoloration, odors, differences in soil
properties, abandoned underground tanks or pipes, or buried debris.
Prevent leaks and spills. Contaminated soil can be expensive to treat and dispose of
properly. However, addressing the problem before construction is much less expensive than
after the structures are in place.
The contractor may further identify contaminated soils by investigating
- Past site uses and activities
- Detected or undetected spills and leaks
- Acid or alkaline solutions from exposed soil or rock formations high in acid or alkaline
forming elements
- Contaminated soil as evidenced by discoloration, odors, differences in soil properties,
abandoned underground tanks or pipes, or buried debris.
- Suspected soils should be tested at a certified laboratory.
Education
Have employees and subcontractors complete a safety training program which meets 29
CFR 1910.120 and 8 CCR 5192 covering the potential hazards as identified, prior to
performing any excavation work at the locations containing material classified as hazardous.
Educate employees and subcontractors in identification of contaminated soil and on
contaminated soil handling and disposal procedures.
Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular
safety meetings).
Handling Proceduresfor Material with Aerially Deposited Lead (ADL)
Materials from areas designated as containing (ADL) may, if allowed by the contract special
provisions, be excavated, transported, and used in the construction of embankments and/or
backfill
Excavation, transportation, and placement operations should result in no visible dust.
Caution should be exercised to prevent spillage of lead containing material during transport
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Contaminated Soil Management WM-7
Quality should be monitored during excavation of soils contaminated with lead.
Handling Proced ureafor Contaminated Soils
Minimize onsite storage. Contaminated soil should be disposed of properly in accordance
with all applicable regulations. All hazardous waste storage will comply with the
requirements in Title 22, CCR, Sections 66265.250 to 66265.260.
Test suspected soils at an approved certified laboratory.
Work with the local regulatory agencies to develop options for treatment or disposal if the
soil is contaminated.
Avoid temporary stockpiling of contaminated soils or hazardous material.
Take the following precautions if temporary stockpiling is necessary:
- Cover the stockpile with plastic sheeting or tarps.
- Install a berm around the stockpile to prevent runoff from leaving the area
- Do not stockpile in or near storm drains or watercourses.
Remove contaminated material and hazardous material on exteriors of transport vehicles
and place either into the current transport vehicle or into the excavation prior to the vehicle
leaving the exclusion zone.
Monitor the air quality continuously during excavation operations at all locations containing
hazardous material.
Procure all permits and licenses, pay all charges and fees, and give all notices necessary and
incident to the due and lawful prosecution of the work, including registration for
transporting vehicles carrying the contaminated material and the hazardous material.
Collect water from decontamination procedures and treat or dispose of it at an appropriate
disposal site.
Collect non-reusable protective equipment, once used by any personnel, and dispose of at an
appropriate disposal site.
Install temporary security fence to surround and secure the exclusion zone. Remove fencing
when no longer needed.
Excavate, transport, and dispose of contaminated material and hazardous material in
accordance with the rules and regulations of the following agencies (the specifications of
these agencies supersede the procedures outlined in this BMP):
- United States Department of Transportation (USDOT)
- United States Environmental Protection Agency (USEPA)
- California Environmental Protection Agency (CAL-EPA)
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Contaminated Soil Management WM-7
- California Division of Occupation Safety and Health Administration (CAL-OSHA)
- Local regulatory agencies
Procedure3for Underground Storage Tank Removals
Prior to commencing tank removal operations, obtain the required underground storage
tank removal permits and approval from the federal, state, and local agencies that have
jurisdiction over such work.
To determine if it contains hazardous substances, arrange to have tested, any liquid or
sludge found in the underground tank prior to its removal
Following the tank removal, take soil samples beneath the excavated tank and perform
analysis as required by the local agency representative(s).
The underground storage tank, any liquid or sludge found within the tank, and all
contaminated substances and hazardous substances removed during the tank removal and
transported to disposal facilities permitted to accept such waste.
Water Control
All necessary precautions and preventive measures should be taken to prevent the flow of
water, including ground water, from mixing with hazardous substances or underground
storage tank excavations. Such preventative measures may consist of; but are not limited to,
berms, cofferdams, grout curtains, freeze walls, and seal course concrete or any combination
thereof.
If water does enter an excavation and becomes contaminated, such water, when necessary to
proceed with the work, should be discharged to clean, closed top, watertight transportable
holding tanks, treated, and disposed of in accordance with federal, state, and local laws.
Costs
Prevention of leaks and spills is inexpensive. Treatment or disposal of contaminated soil can be
quite expensive.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation.
Arrange for contractor's Water Pollution Control Manager, foreman, and/or construction
supervisor to monitor onsite contaminated soil storage and disposal procedures.
Monitor air quality continuously during excavation operations at all locations containing
hazardous material.
Coordinate contaminated soils and hazardous substances/waste management with the
appropriate federal, state, and local agencies.
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Contaminated Soil Management WM-7
Implement WM-4, Spill Prevention and Control, to prevent leaks and spills as much as
possible.
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from'
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
-
Processes, Procedures and Methods to Control Pollution Resulting from All Construction
Activity, 430/9-73-007, USEPA, 1973.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities; Developing Pollution Prevention Plans
and Best Management Practice, EPA 832-R-92005; USEPA, April 1992.
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Concrete Waste Management WM-8
CONCRETE
WASHOUT
AREA
Objectives
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS NonStonnwater
Management Control
WM Waste Management and
Materials Pollution Control
Legend:
ll Primary Objective
19 Secondary Objective
Targeted Constituents
Sediment (1
Nutrient
Trash
Metals El
Bacteria
Oil and Grease
Organics
Potential Alternatives
None
Description and Purpose
Prevent or reduce the discharge of pollutants to stormwater
from concrete waste by conducting washout offsite, performing
onsite washout in a designated area, and training employee and
subcontractors.
Suitable Applications
Concrete waste management procedures and practices are
implemented on construction projects where:
Concrete is used as a construction material or where
concrete dust and debris result form demolition activities
Slurries containing portland cement concrete (PCC) or
asphalt concrete (AC) are generated, such as from saw
cutting, coring, grinding, grooving, and hydra-concrete
demolition
Concrete trucks and other concrete-coated equipment are
washed onsite
. Mortar-mixing stations exist
See also NS-8, Vehicle and Equipment Cleaning
Limitations
.Offsite washout of concrete wastes may not always be possible.
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WM-8 Concrete Waste Management
Implementation
The following steps will help reduce stormwater pollution from concrete wastes:
Discuss the concrete management techniques described in this BMP (such as handling of
concrete waste and washout) with the ready-mix concrete supplier before any deliveries are
made.
Incorporate requirements for concrete waste management into material supplier and
subcontractor agreements.
Store dry and wet materials under cover, away from drainage areas.
Avoid mixing excess amounts of fresh concrete.
Perform washout of concrete trucks offsite or in designated areas only.
Do not wash out concrete trucks into storm drains, open ditches, streets, or streams.
Do not allow excess concrete to be dumped onsite, except in designated areas.
For onsite washout:
- Locate washout area at least 50 feet from storm drains, open ditches, or water bodies.
Do not allow runoff from this area by constructing a temporary pit or bermed area large
enough for liquid and solid waste.
- Wash out wastes into the temporary pit where the concrete can set, be broken up, and
then disposed properly.
Avoid creating runoff by draining water to a bermed or level area when washing concrete to
remove fine particles and expose the aggregate.
Do not wash sweepings from exposed aggregate concrete into the street or storm drain.
Collect and return sweepings to aggregate base stockpile or dispose in the trash
Education
Educate employees, subcontractors, and suppliers on the concrete waste management
techniques described herein.
Arrange for contractor's superintendent or representative to oversee and enforce concrete
waste management procedures.
Concrete Slurry Wastes
PCC and AC waste should not be allowed to enter storm drains or watercourses.
PCC and AC waste should be collected and disposed of or placed in a temporary concrete
washout facility.
A sign should be installed adjacent to each temporary concrete washout facility to inform
concrete equipment operators to utilize the proper facilities.
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Concrete Waste Management WM-8
Below grade concrete washout facilities are typical. Above grade facilities are used if
excavation is not practical
A foreman or construction supervisor should monitor onsite concrete working tasks, such as
saw cutting, coring, grinding and grooving to ensure proper methods are implemented.
Saw-cut PCC slurry should not be allowed to enter storm drains or watercourses. Residue
from grinding operations should be picked up by means of a vacuum attachment to the
grinding machine. Saw cutting residue should not be allowed to flow across the pavement
and should not be left on the surface of the pavement. See also NS-3, Paving and Grinding
Operations; and WM-io, Liquid Waste Management.
Slurry residue should be vacuumed and disposed in a temporary pit (as described in OnSite
Temporary Concrete Washout Facility, Concrete Transit Truck Washout Procedures, below)
and allowed to dry. Dispose of dry slurry residue in accordance with WM-, Solid Waste
Management.
Onsite Temporary Concrete WashoutFacility, Transit Truck Washout
Procedures
Temporary concrete washout facilities should be located a minimum of 50 ft from storm
drain inlets, open drainage facilities, and watercourses. Each facility should be located away
from construction traffic or access areas to prevent disturbance or tracking.
A sign should be installed adjacent to each washout facility to inform concrete equipment
operators to utilize the proper facilities.
Temporary concrete washout facilities should be constructed above grade or below grade at
the option of the contractor. Temporary concrete washout facilities should be constructed
and maintained in sufficient quantity and size to contain all liquid and concrete waste
generated by washout operations.
Temporary washout facilities should have a temporary pit or bermed areas of sufficient
volume to completely contain all liquid and waste concrete materials generated during
washout procedures.
Washout of concrete trucks should be performed in designated areas only.
Only concrete from mixer truck chutes should be washed into concrete wash out.
Concrete washout from concrete pumper bins can be washed into concrete pumper trucks
and discharged into designated washout area or properly disposed of offsite.
Once concrete wastes are washed into the designated area and allowed to harden, the
concrete should be broken up, removed, and disposed of per WM-5, Solid Waste
Management. Dispose of hardened concrete on a regular basis.
Temporary Concrete Washout Facility (T)rpe Above Grade)
- Temporary concrete washout facility (type above grade) should be constructed as shown
on the details at the end of this BMP, with a recommended minimum length and
January 2003 California Stormwathr BMP Handbook 3 of 7
Construction
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WM-8 Concrete Waste Management
minimum width of io ft, but with sufficient quantity and volume to contain all liquid and
concrete waste generated by washout operations.
- Straw bales, wood stakes, and sandbag materials should conform to the provisions in SE-
9, Straw Bale Barrier.
- Plastic lining material should be a minimum of 10 mfl in polyethylene sheeting and
should be free of holes, tears, or other defects that compromise the impermeability of the
material.
. Temporary Concrete Washout Facility (Type Below Grade)
Temporary concrete washout facilities (type below grade) should be constructed as
shown on the details at the end of this BMP, with a recommended minimum length and
minimum width of lo ft. The quantity and volume should be sufficient to contain all
liquid and concrete waste generated by washout operations.
- Lath and flagging should be commercial type.
- Plastic lining material should be amininium of io mil polyethylene sheeting and should
be free of holes, tears, or other defects that compromise the impermeability of the
material.
Removal of Temporary Concrete Washout Facilities
When temporary concrete washout facilities are no longer required for the work, the
hardened concrete should be removed and disposed of. Materials used to construct
temporary concrete washout facilities should be removed from the site of the work and
disposed of.
Holes, depressions or other ground disturbance caused by the removal of the temporary
concrete washout facilities should be backfilled and repaired.
Costs
All of the above are low cost measures.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation.
Temporary concrete washout facilities should be maintained to provide adequate holding
capacity with a minimum freeboard of 4 in. for above grade facilities and 12 in. for below
grade facilities. Maintaining temporary concrete washout facilities should include removing
and disposing of hardened concrete and returning the facilities to a functional condition.
Hardened concrete materials should be removed and disposed of.
Washout facilities must be cleaned, or new facilities must be constructed and ready for use
once the washout is 75% full.
4 of 7 California StormwatEr BMP Handbook January 2003
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Concrete Waste Management WM-8
References
Blueprint for a Clean Bay: Best Management Practices to Prevent Stormwater Pollution from
Construction Related Activities; Santa Clara Valley Nonpoint Source Pollution Control Program,
1995.
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Stormwater Management for Construction Activities; Developing Pollution Prevention Plans
and Best Management Practice, EPA 832-R-92005; IJSEPA, April 1992.
January 2003 California Stormwater BMP Handbook 5 of 7
Construction
www.cabmphandbooks.com
Sanitary/Septic Waste Management WM-9
EMEMESIM
Objectives
EC Erosion Control
SE Sediment Control
IC Tracking Control
WE Wind Erosion Control
NS NonStomiwater -
Management Control
WM Waste Management and
Metedals Pollution Control
Legend:
CI Primary Objective
IN Secondary Objective
Targeted Constituents
Description and Purpose Sediment Proper sanitary and septic waste management prevent the NI1II ents discharge of pollutants to stormwater from sanitary and septic Trash L1 waste by providing convenient well-maintained facilities, and
arranging for regular service and disposal. Metals
Bacteria CJ
Suitable Applications Oil and Grease
Sanitary septic waste management practices are suitable for use Organics
at all construction sites that use temporary or portable sanitary
and septic waste systems. Potential Alternatives
Umitations None
None identified.
Implementation
Sanitary or septic wastes should be treated or disposed of in
accordance with state and local requirements. In many cases,
one contract with a local facility supplier will be all that it takes
to make sure sanitary wastes are properly disposed.
Storage and Disposal Procedures
a Temporary sanitary facilities should be located away from
drainage facilities, watercourses, and from traffic
circulation. When subjected to high winds or risk of high
winds, temporary sanitary facilities should be secured to
prevent overturning.
Wastewater should not be discharged or buried within the
project site.
C.\LOI., SWTUt .:A::n 5t.vCtftlN
January 2003 California Stormwatar BMP Handbook 1 of 3
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WM-9 Sanitary/Septic Waste Management
Sanitary and septic systems that discharge directly into sanitary sewer systems, where
permissible, should comply with the local health agency, city, county, and sewer district
requirements.
Only reputable, licensed sanitary and septic waste haulers should be used.
Sanitary facilities should be located in a convenient location.
Untreated raw wastewater should never be discharged or buried.
Temporary septic systems should treat wastes to appropriate levels before discharging.
If using an onsite disposal system (OSDS), such as a septic system, local health agency
requirements must be followed.
Temporary sanitary facilities that discharge to the sanitary sewer system should be properly
connected to avoid illicit discharges.
Sanitary and septic facilities should be maintained in good working order by a licensed
service.
Regular waste collection by a licensed hauler should be arranged before facilities overflow.
Education
Educate employees, subcontractors, and suppliers on sanitary and septic waste storage and
disposal procedures.
Educate employees, subcontractors, and suppliers of potential dangers to humans and the
environment from sanitary and septic wastes.
Instruct employees, subcontractors, and suppliers in identification of sanitary and septic
waste.
Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular
safety meetings).
• Establish a continuing education program to indoctrinate new employees.
Costs
All of the above are low cost measures.
Inspection and Maintenance
Inspect and verify that activity—based BMPs are in place prior to the commencement of
associated activities. While activities associated with the BMP are under way, inspect weekly
during the rainy season and of two-week intervals in the non-rainy season to verify
continued BMP implementation.
Arrange for regular waste collection.
If high winds are expected, portable sanitary facilities must be secured with spikes or
weighed down to prevent over turning.
2 of 3 California Stormwathr BMP Handbook January 2003
Constriction
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Sanitary/Septic Waste Management WM-9
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltians), November 2000.
Stormwater Management for Construction Activities; Developing Pollution Prevention Plans
and Best Management Practice, EPA 832-R-92005; IJSEPA, April 1992.
January 2003 California Stormwater BMP Handbook 3 of 3
Construction
www.cabmphandbooks.com
APPENDIX I
CONSTRUCTION SITE
INSPECTION REPORT FORMS
Rain Gaugé. Log Sheet
Construction Site Name:
Rancho Costera
WDID#:
Date Time Initials I (mmlddlyy) (24-hr)
Rainfall Depth Notes
(Inches)
Risk Level
Visual Inspection Field Log Sheet
Date and Time of Inspection: Report Date:
Inspection
we. 0 Weekly 0 Before
predicted rain
0 During
rain event
0 Following
qualifying rain
event
0 Contained
stormwater
release
0 Quarterly non-
stormwater
Site Information
Construction Site Name:
Rancho Costera
Construction stage and
completed activities:
Approximate area
of exposed site:
Weather and Observations
Date Rain Predicted to Occur: Predicted % chance of rain:
Estimate storm beginning: Estimate storm
duration:
(hours)
Estimate time since last
storm:
(days or hours)
Rain gauge reading:
(inches) (date and time)
Observations: If yes identify location
Odors Yes 0 No 0
Floating material Yes 0 No 0
Suspended Material Yes 0 No 0
Sheen Yes 0 No 0
Discolorations Yes 0 No 0
Turbidity Yes 0 No 0
• Site Inspections
Outfalls or BMPs Evaluated Deficiencies Noted
(add additional sheets or attached detailed BMP Inspection Checklists)
Photos Taken: Yes 0 No 0 Photo Reference IDs:
Corrective Actions Identified (note if SWPPP!REAP change is needed)
Inspector Information
Inspector Name: Inspector Title:
Signature: Date:
Risk Level 2
Effluent Sampling Field Log Sheets
Construction Site Name:
Rancho Costera
Date: Time Start:
Sampler
Sampling Event Type: 0 Stormwater 0 Non-stormwater 0 Non-visible pollutant
Field Meter Calibration
pH Meter ID No./Desc.:
Calibration Date/Time:
Turbidity Meter ID No./Desc.:
Calibration Date/Time:
Field pH and Turbidity Measurements
Discharge Location Description pH Turbidity J Time
Grab Samples Collected
Discharge Location Description Sample Type Time
Additional Sampling Notes:
Time End:
BMP INSPECTION REPORT
Date and Time of Inspection: Date Report Written:
Inspection Type:
(Circle one) yp
Weekly
Complete Parts
/1, /// and VII
Pre-Storm
Complete Parts
I, II, 111,1 V and VII
During Rain Event
Complete Parts I II,
Ill, V. and VII
Post-Storm
Complete Parts
1,11,111, VI and VII
Part I General Information
Site Information
Construction Site Name:
Rancho Costera
Construction stage and
completed activities:
Approximate area
of site that is exposed:
Photos Taken:
(Circle one) Yes No Photo Reference IDs:
Weather
Estimate storm beginning:
(date and time)
Estimate storm duration:
(hours)
Estimate time since last storm:
(days or hours)
Rain gauge reading and location:
(in)
Is a "Qualifying Event" predicted or did one occur (i.e., 0.5° rain with 48-hrs or greater between events)? (Y/N)
If yes, summarize forecast:
Exemption Documentation (explanation required if inspection could not be conducted). Visual
inspections are not required outside of business hours or during dangerous weather conditions such as flooding
or electrical storms.
Inspector Information
Inspector Name: Inspector Title:
Signature: Date:
Part II BMP Observationsr Décribe defuciendies in PrVlU
Failures or Action Action
Minimum BMPs for Risk Level 2 Sites other ri gs Required Implemented
(yes/no) (Date) (yes, no, N/A)
Good HousekeepIn for Constructin MatrlaIs
Inventory of products (excluding materials designed to be
outdoors)
Stockpiled construction materials not actively in use are
covered and bermed
All chemicals are stored in watertight containers with
Appropriate secondary containment, or in a completely
enclosed storage shed
Construction materials are minimally exposed to precipitation
BMPs preventing the off-site tracking of materials are
implemented and properly effective
Good Housekeeping for Waste Management
Wash/rinse water and materials are prevented from being
disposed into the storm drain system
Portable toilets are contained to prevent discharges of waste
Sanitation facilities are clean and with no apparent for leaks
and spills
Equipment is in place to cover waste disposal containers at
the end of business day and during rain events
Discharges from waste disposal containers are prevented from
discharging to the storm drain system / receiving water
Stockpiled waste material is securely protected from wind and
rain if not actively in use
Procedures are in place for addressing hazardous and non-
hazardous spills
Appropriate spill response personnel are assigned and trained
Equipment and materials for cleanup of spills is available on-
site
Washout areas (e.g., concrete) are contained appropriately to
prevent discharge or infiltration into the underlying soil
17 Goad Housekeeping f& Vehicle Storage and Mauntnance'
Measures are in place to prevent oil, grease, or fuel from
leaking into the ground, storm drains, or surface waters
All equipment or vehicles are fueled, maintained, and stored in
a designated area with appropriate BMPs
Vehicle and equipment leaks are cleaned immediately and .
disposed of properly
Part II. BMP Observations Continued. Describe deficiencies in Part Ill.
Adequately
designed, Action Action
Minimum BMPs for Risk Level 2 Sites implemented and Required Implemented
effective (yes/no) (Date)
(yes, no, N/A)
Good Housekeeping for Landscape Materials
Stockpiled landscape materials such as mulches and topsoil
are contained and covered when not actively in use
Erodible landscape material has not been applied 2 days
before a forecasted rain event or during an event
Erodible landscape materials are applied at quantities and
rates in accordance with manufacturer recommendations
Bagged erodible landscape materials are stored on pallets and
covered
Good Housekeeping for Air Deposition of Site Materials
Good housekeeping measures are implemented on-site to
control the air deposition of site materials and from site
operations
Non-Stormwater Management
Non-Stormwater discharges are properly controlled
Vehicles are washed in a manner to prevent non-stormwater
discharges to surface waters or drainage systems
Streets are cleaned in a manner to prevent unauthorized non-
stormwater discharges to surface waters or drainage systems.
Erosion Controls
Wind erosion controls are effectively implemented
Effective soil cover is provided for disturbed areas inactive
(i.e., not scheduled to be disturbed for 14 days) as well as
finished slopes, open space, utility backfill, and completed lots
The use of plastic materials is limited in cases when a more
sustainable, environmentally friendly alternative exists.
Sediment Controls V
Perimeter controls are established and effective at controlling
erosion and sediment discharges from the site
Entrances and exits are stabilized to control erosion and
sediment discharges from the site
Sediment basins are properly maintained
Linear sediment control along toe of slope, face of slope an at
grade breaks (Risk Level 2 & 3 Only)
Limit construction activity to and from site to entrances and
exits that employ effective controls to prevent offsite tracking
(Risk Level 2 & 3 Only)
Ensure all storm, drain inlets and perimeter controls, runoff
control BMPs and pollutants controls at entrances and exits
are maintained and protected from activities the reduce their
effectiveness (Risk Level 2 & 3 Only)
Inspect all immediate access roads daily (Risk Level 2 & 3
Only)
Run-On and Run-Off Controls
Run-on to the site is effectively managed and directed away
from all disturbed areas.
Other
Are the project SWPPP and BMP plan up to date, available on-site
and being properly implemented?
Part Ill. Descriptions of BMP Deficiencies
Deficiency
Repairs Implemented:
Note - Repairs must begin within 72 hours of identification and,
complete repairs as soon as possible.
Start Date Action
Part IV. Additional Pre-Storm Observations. Note the presence or absence of floating and
suspended materials, sheen, discoloration, turbidity, odors, and source(s) of pollutants(s).
Yes, No, N/A
Do stormwater storage and containment areas have adequate freeboard? If no, complete Part Ill.
Are drainage areas free of spills, leaks, or uncontrolled pollutant sources? If no, complete Part VII
and describe below.
Notes:
Are stomwater storage and containment areas free of leaks? If no, complete Parts III and/or VII
and describe below.
Notes:
Part V. Additional During Storm Observations. If BMPs cannot be Inspected during
inclement weather, list the results of visual inspections at all relevant outfalls, discharge points,
and downstream locations. Note odors or visible sheen on the surface of discharges. Complete
Part VII (Corrective Actions) as needed.
Outfall, Discharge Point, or Other Downstream Location
Location Description
Location Description
Location Description
Location Description
Location Description
Location Description
Location Description
Location Description
Part VI. Additional Post-Storm Observations. Visually observe (inspect) stormwater
discharges at all discharge locations within two business days (48 hours) after each qualifying
rain event, and observe (inspect) the discharge of stored or contained stormwater that is derived
from and discharged subsequent to a qualifying rain event producing precipitation of 1/2 inch or
more at the time of discharge. Complete Part VII (Corrective Actions) as needed.
Discharge Location, Storage or
Containment Area
Visual Observation
Part VII. Additional Corrective Actions Required. Identify additional corrective actions not
included with BMP Deficiencies (Part Ill) above. Note if SWPPP change is requIred.
Required Actions Implementation Date
APPENDIX J
RAIN EVENT ACTION PLAN
(FORMS AND COMPLETED PLANS)
I Rain Event Action Plan (REAP)
Date of REAP I I WDID Number:
I ram: Date Rain Predicted to Occur: eted % chance of
Predicted Rain Event Triggered Actions
Below is a list of suggested actions and items to review for this project. Each active Trade should check all material storage
areas, stockpiles, waste management areas, vehicle and equipment storage and maintenance, areas of active soil disturbance,
and areas of active work to ensure the proper implementation of BMPs. Project-wide BMPs should be checked and cross-
referenced to the BMP progress map.
Trade or Activity Suggested action(s) to perform / item(s) to review prior to rain event
Information & Scheduling I] Inform trade supervisors of predicted rain
O Check scheduled activities and reschedule as needed
O Alert erosion/sediment control provider
Cl Alert sample collection contractor (if applicable)
Ci Schedule staff for extended rain inspections (including weekends & holidays)
0 Check Erosion and Sediment Control (ESC) material stock
O Review BMP progress map
O Other:______________________________
1 Material storage areas 0 Material under cover or in sheds (ex: treated woods and metals)
0 Perimeter control around stockpiles
O Other____________________________
] Waste management areas 0 Dumpsters closed
O Drain holes plugged
O Recycling bins covered
O Sanitary stations bermed and protected from tipping
O Other:______________________________
0
0
] Trade operations 0 Exterior operations shut down for event (e.g., no concrete pours or paving)
O Soil treatments (e.g.,: fertilizer) ceased within 24 hours of event
O Materials and equipment (ex: tools) properly stored and covered
O Waste and debris disposed in covered dumpsters or removed from site
O Trenches and excavations protected
a Perimeter controls around disturbed areas
U Fueling and repair areas covered and bermed
OOther:______________________________
0
0
Site ESC BMPs 0 Adequate capacity in sediment basins and traps
0 Site perimeter controls in place
O Catch basin and drop inlet protection in place and cleaned
O Temporary erosion controls deployed
O Temporary perimeter controls deployed around disturbed areas and stockpiles
C3 Roads swept; site ingress and egress points stabilized
OOther_____________________________
Concrete rinse out area 0 Adequate capacity for rain
U Wash-out bins covered
O Other:______________________________
I Spill and drips 0 All incident spills and drips, including paint, stucco, fuel, and oil cleaned
0 Drip pans emptied
OOther:_______________________________________
] Other I Discussion
Diagrams
Attach a printout of the weather forecast from the NOAA website to the REAP.
I certify under penalty of law that this Rain Event Action Plan (REAP) will be performed in accordance with the General Permit
by me or under my direction or supervision in accordance with a system designed to assure that qualified personnel properly
gathered and evaluated the information submitted. Based on my inquiry of the persons who manage the system, or those
persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief,
true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the
possibility of fine and imprisonment for knowing violations.
Date:
Qualified SWPPP Practitioner (Use ink please)
APPENDIX K
TRAINING REPORTING FORM
Storm Water Management Training Log
I Project Name: I Rancho Costera
Project Number/Location: Carlsbad Tract No. 13-03 / North of El Camino Real between
I Tamarack Avenue and Cannon Road
Storm Water Management Topic: (check as appropriate)
D Erosion Control U Sediment Control
U Wind Erosion Control U Tracking Control
U Non-storm water management U Waste Management and Materials Pollution Control
U Storm Water Sampling U Other
Specific Training Objective:
Location: Date:
Instructor: Telephone:
Course Length (hours):
Attendee Roster (attach additional forms if necessary)
Name Company - Phone
COMMENTS:
APPENDIX L
RESPONSIBLE PARTIES
Authorization of Approved Signatories
Project Name: Rancho Costera
WDID#:
Name of
Personnel Project Role Company Signature Date
LRP's Signature Date
LRP Name and Title Telephone Number
Identification of QSP
Project Name: Rancho Costera
WDID#:
The following are QSPs associated with this project
Name of Personnel (1) Company Date
(1) If additional QSPs are required on the job site add additional lines and include information here
APPENDIX M
CONTRACTORS AND SUBCONTRACTORS
CONTRACTORS AND SUBCONTRACTORS
COMPANY NAME ADDRESS PHONE TYPE OF WORK
GRAPHI
200 S 1
1 INCH
PROPOSED
PROPOSED DRAIN AGE a FACILITY
NOTES:
THIS EXHIBIT SHALL BE LAMIN ATED KEPT IN THE CO NS
TRAILER.
ICONTRACTOR AND/OR QU ALIFIED A • 5
J IDENTIFY CONSTRUCTION BM PS a • CONSTRUCTION
SILT FENCING, GRAVEL BAGS, STRAW WADDLES,
AA 5 5 AIN TEN STORAGE/WASH AN CE/DELI VERY LOC ATION'
STORMWATER SAMPLING LO CATIONS ON THIS EXHIBITCO
PROGRESSES.BE IDENTIFIED PRIOR TO
WOR K IN A AREA. SH ALL 5
COURSETHE OF CONSTRUCTI ON.
CONTRACTOR SHALL APPLY LINEAR A CONTR OLS
OF 5F ACE OF • GRADE
EXPOSED SLOPES TO COMPLY WITH SHEET FLOW
A FOLLOWING ACCORDANCE TABLE FLOW I-Et
LENGTH A SHALLOW, LOW VELOCITY • ACRII
SLOPE SHEET FLOW S I
S•. 20 FEET
I.. 15 FEET
I.. 10 FEET
t1AIIUiI