HomeMy WebLinkAboutKTA Construction Inc; 2010-02-22; PWS10-13ENG Part 3 of 3Attachment F
Notice of Intent (NOI)
Attachment 2
State Water Resources Control Board
NOTICE OF INTENT
TO COMPLY WITH THE TERMS OF THE
GENERAL PERMIT TO DISCHARGE STORM WATER
ASSOCIATED WITH CONSTRUCTION ACTIVITY (WQ ORDER No. 99-08-DWQ)
I. NOI STATUS (SEE INSTRUCTIONS)
MARK ONLY ONE ITEM 1. ^| New Construction 2. Q Chaige of Information for WDID# | |j
II. PROPERTY OWNER
Name
City of Carlsbad
Mailing Address
1635 Faraday Avenue
City
Carlsbad
III. DEVELOPER/CONTRACTOR INFORMATION
Developer/Contractor
TBD
Mailing Address
City
Contact Person
TBD
Title
TBD
Slat Zip Phone
e
CA 92008 760-434-2830
Contact Person
TBD
Title
State Zip Phone
IV. CONSTRUCTION PROJECT INFORMATION
Site/Project Name
Alqa Norte Community Park
Physical Address/Location
Northwest corner of Alicante Rd and Poinsettia Lane
City (or nearest City)
Carlsbad
A. Total size of construction site area:
32 Acres
B. Total area to be disturbed:
32 Acres (% of total 100 )
Site Contact Person
TBD
Latitude Longitude
33° 117°
County
San Diego
Zip Site Phone Number Emergency Phone Number
92009 TBD TBD
C. Percent of site imperviousness (including rooftops):
Before Construction: 0 %
After Construction* 0 %
F. Is the construction site part of a larger common plan of development or sale?
Q| YES £3 NO
H. Construction commencement date: TBD
I. % of site to be mass araded: 100
D. Tract Number(s):
E. Mile Post Marker:
G. Name of plan or development:
J. Projected construction dates:
Complete qradinq: TBD Complete project: TBD
K. Type of Construction (Check all that apply):
1. I I Residential 2. M Commercial 3. I I Industrial 4. LJ Reconstruction
e. D utility Description: Grading for Community Park 7.
5. | 1 Transportation
1 1 Other (Please List):
V. BILLING INFORMATION
SEND BILL TO:
E3 OWNER
(as in II. above)
Q DEVELOPER
(as in III. above)
O OTHER
(enter information at right)
Name
City of Carlsbad
Mailing Address
1635 Faraday Avenue
City
Carlsbad
Contact Person
TBD
Phone/Fax
(760) 434-2830
State
CA
Zip
92008 „
'\. REGULATORY STATUS
A. Has a local agency approved a required erosion/sediment control plan? D\l YES | | NO
Does the erosion/sediment control plan address construction activities such as infrastructure and structures? IXI YES | ] NO
r 'local agency: CitV Of Carlsbad Phone: 760-434-2830
B. Is this project or any part thereof, subject to conditions imposed under a CWA Section 404 permit of 401 Water Quality Certification? [_J YES M NO
If yes, provide details:
'II. RECEIVING WATER INFORMATION
A. Does the storm water runoff from the construction site discharge to (Check all that apply):
1. [>3 Indirectly to waters of the U.S.
2. [><3 Storm drain system - Enter owner's name: City of Carlsbad
3. I I Directly to waters of U.S. (e.g., river, lake, creek, stream, bay, ocean, etc.)
B. Name of receiving water: (river, lake, creek, stream, bay, ocean): BatiQUJtOS LaQOOn
111. IMPLEMENTATION OF NPDES PERMIT REQUIREMENTS
A. STORM WATER POLLUTION PREVENTION PLAN (SWPPP) (check one)
0*3 A SWPPP has been prepared for this facility and is available for review: Date Prepared: 07/30/09 Date Amended:
I I A SWPPP will be prepared and ready for review by (enter date):
[ I A tentative schedule has been included in the SWPPP for activities such as grading, street construction, home construction, etc.
B. MONITORING PROGRAM
M A monitoring and maintenance schedule has been developed that includes inspection of the construction BMPs before
anticipated storm events and after actual storm events and is available for review.
,f checked above: A qualified person has been assigned responsibility for pre-storm and post-storm BMP inspections
to identify effectiveness and necessary repairs or design changes M YES ) I NO
Name: TBD Phone: 760-434-2830
C. PERMIT COMPLIANCE RESPONSIBILITY
A qualified person has been assigned responsibility to ensure full compliance with the Permit, and to implement all elements of the Storm Water Pollution
Prevention Plan including:
1. Preparing an annual compliance evaluation Psl YES I I NO
Name: TBD Phone: 760-434-2830
2. Eliminating all unauthorized discharges l/^ YES I I NO
X. VICINITY MAP AND FEE (must show site location in relation to nearest named streets, intersections, etc.)
Have you included a vicinity map with this submittal? £*J YES I I NO
Have you included payment of the annual fee with this submittal? I I YES ^ NO
(. CERTIFICATIONS
"I certify under penalty of law that this document and all attachments were prepared under my direction and 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, true, accurate, and complete. I am aware that there are significant penalties for submitting false
information, including the possibility of fine or imprisonment. In addition, I certify that the provisions of the permit, including the
development and implementation of a Storm Water Pollution Prevention Plan and a Monitoring Program Plan will be complied with."
Printed Name:
Sigrii Date:
Title:
COPY
Attachment G
Program for Maintenance, Inspection, and Repair of Construction Site BMPs
The contractor shall use the following guidelines for maintenance, inspection, and repair
of BMPs identified in the SWPPP
BEST MANAGEMENT
PRACTICES (BMPs)
INSPECTION FREQUENCY
(all controls)MAINTENANCE/REPAIR PROGRAM
TEMPORARY EROSION CONTROL BMPs
EC-1, Scheduling Avoid rainy periods. Schedule
major grading operations during
dry months when practical.
Allow enough time before
rainfall begins to stabilize the
soil with vegetation or physical
means or to install sediment
trapping devices.
Plan the project and develop a
schedule showing each phase
of construction. Clearly show
how the rainy season relates to
soil disturbing and
restabilization activities.
Incorporate the construction
schedule into the SWPPP.
Include on the schedule, details
on the rainy season
implementation and deployment
of BMPs
Include dates for activities that
may require non-stormwater
discharges such as dewatering,
sawcutting, grinding, drilling,
boring, crushing, blasting,
painting, hydro-demolition,
mortar mixing, pavement
cleaning, etc.
Work out the sequencing and
timetable for the start and
completion of each item such as
site clearing and grubbing,
grading, excavation, paving,
foundation pouring utilities
installation, etc., to minimize the
active construction area during
the rainy season.
Non-active areas should be
stabilized as soon as practical
after the cessation of soil
disturbing activities or one day
prior to the onset of
precipitation.
Monitor the weather forecast for
rainfall.
Verify that work is progressing in
accordance with the schedule. If
progress deviates, take corrective
actions.
Amend the schedule when changes are
warranted.
Amend the schedule prior to the rainy
season to show updated information on
the deployment and implementation of
construction site BMPs.
Attachment G
Sample Maintenance, Inspection and Repair Program
The contractor shall use the following guidelines for maintenance, inspection, and repair
ofBMPs identified in the SWPPP
BEST MANAGEMENT
PRACTICES (BMPs)
INSPECTION FREQUENCY
(all controls)MAINTENANCE/REPAIR PROGRAM
TEMPORARY SEDIMENT CONTROL BMPs
SE-1, Silt Fence Inspect 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.
SE-4, Check Dams Inspect 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 of 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.
Attachment G
Sample Maintenance, Inspection and Repair Program
The contractor shall use the following guidelines for maintenance, inspection, and repair
ofBMPs identified in the SWPPP
BEST MANAGEMENT
PRACTICES (BMPs)
INSPECTION FREQUENCY
(all controls)MAINTENANCE/REPAIR PROGRAM
SE-10, Storm Drain Inlet
Protection
Inspect 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.
SE-2, Sediment Basin Inspect 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 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 may be incorporated into
earthwork on the site ore disposed at an
appropriate location.
Examine basin banks for seepage and
structural soundness.
Check inlet and outlet structures and
spillway for any damage or obstructions.
Repair damage and remove obstructions as
needed.
Check inlet and outlet area for erosion and
stabilize if required.
Check fencing for damage and repair as
needed.
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 volume.
Sediment removed during maintenance may
be incorporated into earthwork on the site or
disposed of at appropriate locations.
Remove standing water from basin within
72 hours after accumulation.
BMPs that require dewatering shall be
continuously attended while dewatering takes
place. Dewatering BMPs shall be
implemented at all times during dewatering
activities.
To minimize vector production:
- Remove accumulation of live and dead
floating vegetation in basins during every
inspection.
- Remove excessive emergent and perimeter
vegetation as needed or as advised by local
or state vector control agencies
Attachment G
Sample Maintenance, Inspection and Repair Program
The contractor shall use the following guidelines for maintenance, inspection, and repair
ofBMPs identified in the SWPPP
BEST MANAGEMENT
PRACTICES (BMPs)
INSPECTION FREQUENCY
(all controls)MAINTENANCE/REPAIR PROGRAM
WIND EROSION CONTROL BMPs
WE-1 , Wind Erosion Control 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.
Most dust control measures
require frequent, often daily, or
multiple times per day
attention.
• Check areas protected to ensure
coverage.
TRACKING CONTROL BMPs
SE-7, Street Sweeping and
Vacuuming
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.
Attachment G
Sample Maintenance, Inspection and Repair Program
The contractor shall use the following guidelines for maintenance, inspection, and repair
ofBMPs identified in the SWPPP
BEST MANAGEMENT
PRACTICES (BMPs)
INSPECTION FREQUENCY
(all controls)MAINTENANCE/REPAIR PROGRAM
NON-STORM WATER MANAGEMENT BMPs
Immediately clean up spills and properly
dispose of contaminated soil and
cleanup materials
Prohibit employees and subcontractors
from washing personal vehicles and
equipment on the construction site.
Repair or replace damaged hoses and
leaky gaskets as needed.
Keep ample supplies of drip pans or
absorbent materials onsite.
Inspect and maintain machinery regularly
to minimize leaks and drips.
Repair broken water lines as soon as
possible.
Inspect irrigated areas regularly for signs
of erosion and/or discharge.
Ensure that employees and
subcontractors implement appropriate
measures for storage.handling, and use
of curing compounds.
Inspect cure containers and spraying
equipment for leaks. 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.
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.
NS-8, Vehicle and Equipment
Cleaning
NS-9, Vehicle and Equipment
Fueling
NS-10, Vehicle and Equipment
Maintenance
NS-3, Paving and Grinding
Operations
NS-6, Illicit Connection/Discharge
NS-7, Potable Water/Irrigation
NS-12, Concrete Curing
NS-13, Concrete Finishing
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.
Vehicles and equipment should
be inspected each day of use for
leaks.
Inspect equipment for damaged
hoses and leaky gaskets
routinely.
Attachment G
Sample Maintenance, Inspection and Repair Program
The contractor shall use the following guidelines for maintenance, inspection, and repair
ofBMPs identified in the SWPPP
BEST MANAGEMENT
PRACTICES (BMPs)
INSPECTION FREQUENCY
(all controls)MAINTENANCE/REPAIR PROGRAM
WASTE MANAGEMENT AND MATERIALS POLLUTION CONTROL BMPs
WM-1, Material Delivery and
Storage
WM-2, Material Use
WM-3, Stockpile Management
WM-4, Spill Prevention and
Control
WM-5, Solid Waste Management
WM-6, Hazardous Waste
Management
WM-7, Contaminated Soil
Management
WM-8, Concrete Waste
Management
WM-9 Sanitary Septic Waste
Management
WM-10, Liquid Waste
Management
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 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.
Repair and/or replace perimeter controls
and covers as needed to keep them
functioning properly.
Keep ample supplies of spill control and
cleanup materials onsite, near storage,
unloading, and maintenance areas.
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.
Hazardous waste should be regularly
collected. 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.
Attachment H
Storm Water Quality Construction Site Inspection Checklist
GENERAL INFORMATION
Project Name
Project N°
Contractor
Inspector's Name
Inspector's Title
Signature
Date of Inspection
Inspection Type
(Check Applicable)
Season
(Check Applicable)
Storm Data
Alga Norte Community Park
TBD
n Prior to forecast rain d After a rain event
C3 24-hr intervals during extended rain d Other
D Rainy O Non-Rainy
Storm Start Date & Time: Storm Duration (hrs):
Time elapsed since last storm Approximate Rainfall
(Circle Applicable Units) Mjn Hr. Days Amount (inches)
PROJECT AREA SUMMARY AND
DISTURBED SOIL AREA (DSA) SIZE
Total Project Area
Field Estimate of Active DSAs
Field Estimate of Non-Active DSAs
Acres
Acres
Acres
California Stormwater Quality Handbooks
Construction
January 2003
Storm Water Quality Construction Inspection Checklist
1of7
Attachment H
Storm Water Quality Construction Inspection Checklist
1 INSPECTION OF BMPs
BMP
'reservation of Existing Vegetation
s temporary fencing provided to preserve vegetation in areas
where no construction activity is planned?
.ocation:
Location:
.ocation:
Location:
Erosion Control
Does the applied temporary erosion control provide 100%
coverage for the affected areas?
Are any non-vegetated areas that may require temporary erosion
control?
Is the area where erosion controls are used required free from
visible erosion?
Location:
Location:
Location:
Location:
Temporary Linear Sediment Barriers (Silt Fence, Fiber Rolls,
Sandbag Barriers, etc.)
Are temporary linear sediment barriers properly installed,
functional and maintained?
Are temporary linear sediment barriers free of accumulated litter?
Is the built-up sediment less than 1/3 the height of the barrier?
Are cross barriers installed where necessary and properly
spaced?
Location:
Location:
Location:
Location:
Location:
Storm Drain Inlet Protection
Are storm drain inlets internal to the project properly protected?
Are storm drain inlet protection devices in working order and being
properly maintained?
.ocation:
_ocation:
Location:
Location:
Location:
.Sediment Basins
Yes No N/A Corrective Action
Storm Water Quality Construction Inspection Checklist
2 of 7
California Stormwater Quality Handbooks
Construction
January 2003
Attachment H
Storm Water Quality Construction Inspection Checklist
INSPECTION OF BMPs
BMP
Are basins designed in accordance with the requirements of the
General Permit?
Are basins maintained to provide the required retention/detention?
Are basin controls (inlets, outlets, diversions, weirs, spillways, and
racks) in working order?
Location:
Location:
Location:
Location:
Stockpiles
Are all locations of temporary stockpiles, including soil, hazardous
waste, and construction materials in approved areas?
Are stockpiles protected from run-on, run-off from adjacent areas
and from winds?
Are stockpiles located at least 1 5 m from concentrated flows,
downstream drainage courses and storm drain inlets?
Are required covers and/or perimeter controls in place?
Location:
Location:
Location:
Location:
Concentrated Flows
Are concentrated flow paths free of visible erosion?
Location:
Location:
Location:
Location:
Tracking Control
Is the entrance stabilized to prevent tracking
Is the stabilized entrance inspected daily to ensure that it is
working^properly
Are points of ingress/egress to public/private roads inspected and
swept and vacuumed as needed?
Are all paved areas free of visible sediment tracking or other
particulate matter?
Location:
Location:
Location:
Location:
Wind Erosion Control
Is dust control implemented?
Yes No N/A Corrective Action
California Stormwater Quality Handbooks
Construction
January 2003
Storm Water Quality Construction Inspection Checklist
3 of 7
Attachment H
Storm Water Quality Construction Inspection Checklist
INSPECTION OF BMPs
BMP
.ocation:
Location:
Location:
Location:
Dewatering Operations
Are all one-time dewatering operations covered by the General
Permit inspected before and as they occur and BMPs
implemented as necessary during discharge?
Is ground water dewatering handled in conformance with the
dewatering permit issued by the RWQCB?
Is required treatment provided for dewatering effluent?
Location:
Location:
Location:
Location:
Vehicle & Equipment Fueling, Cleaning, and Maintenance
Are vehicle and equipment fueling, cleaning and maintenance
areas reasonably clean and free of spills, leaks, or any other
deleterious material?
Are vehicle and equipment fueling, cleaning and maintenance
activities performed on an impermeable surface in dedicated
areas?
If no, are drip pans used?
Are dedicated fueling, cleaning, and maintenance areas located at
least 15m away from downstream drainage facilities and
watercourses and protected from run-on and runoff?
Is wash water contained for infiltration/ evaporation and disposed
of appropriately?
Is on-site cleaning limited to washing with water (no soap, soaps
substitutes, solvents, or steam)?
On each day of use, are vehicles and equipment inspected for
leaks and if necessary, repaired?
Location:
Location:
Location:
Location:
Waste Management & Materials Pollution Control
Are material storage areas and washout areas protected from
run-on and runoff, and located at least 15m from concentrated
flows and downstream drainage facilities?
Are all material handling and storage areas clean; organized; free
of spills, leaks, or any other deleterious material; and stocked with
appropriate clean-up supplies?
Are liquid materials, hazardous materials, and hazardous wastes
->tored in temporary containment facilities?
Yes No N/A Corrective Action
Storm Water Quality Construction Inspection Checklist
4 of 7
California Stormwater Quality Handbooks
Construction
January 2003
Attachment H
Storm Water Quality Construction Inspection Checklist
INSPECTION OF BMPs
BMP
Are bagged and boxed materials stored on pallets?
Are hazardous materials and wastes stored in appropriate,
labeled containers?
Are proper storage, clean-up, and spill-reporting procedures for
hazardous materials and wastes posted in open, conspicuous and
accessible locations adjacent to storage areas?
Are temporary containment facilities free of spills and rainwater?
Are temporary containment facilities and bagged/boxed materials
covered?
Are temporary concrete washout facilities designated and being
used?
Are temporary concrete washout facilities functional for receiving
and containing concrete waste and are concrete residues
prevented from entering the drainage system?
Do temporary concrete washout facilities provide sufficient volume
and freeboard for planned concrete operations?
Are concrete wastes, including residues from cutting and grinding,
contained and disposed of off-site or in concrete washout
facilities?
Are spills from mobile equipment fueling and maintenance
properly contained and cleaned up?
s the site free of litter?
Are trash receptacles provided in the yard, field trailer areas, and
at locations where workers congregate for lunch and break
periods?
s litter from work areas collected and placed in watertight
dumpsters?
Are waste management receptacles free of leaks?
Are the contents of waste management receptacles properly
protected from contact with storm water or from being dislodged
by winds?
Are waste management receptacles filled at or beyond capacity?
Location:
Location:
Location:
Location:
Temporary Water Body Crossing or Encroachment
Are temporary water body crossings and encroachments
constructed appropriately?
Does the project conform to the requirements of the 404 permit
and/or 1601agreement?
Location:
Location:
Location:
Location:
Illicit Connection/ Discharge
Yes No N/A Corrective Action
California Stormwater Quality Handbooks
Construction
January 2003
Storm Water Quality Construction Inspection Checklist
5 of 7
Attachment H
Storm Water Quality Construction Inspection Checklist
INSPECTION OF BMPs
BMP
Is there any evidence of illicit discharges or illegal dumping on the
project site?
If yes, has the Owner/Operator been notified?
Location:
Location:
Location:
Location:
Discharge Points
Are discharge points and discharge flows free from visible
pollutants?
Are discharge points free of any significant sediment transport?
Location:
Location:
Location:
Location:
SWPPP Update
Does the SWPPP and Project Schedule adequately reflect the
current site conditions and contractor operations?
Are all BMPs shown on the water pollution control drawings
installed in the proper location(s) and according to the details in
the SWPPP?
Location:
Location:
Location:
Location:
General
Are there any other potential concerns at the site?
Location:
.ocation:
Location:
.ocation:
Storm Water Monitoring
Does storm water discharge directly to a water body listed in the
General Permit as impaired for sediment/sedimentation or
turbidity?
f yes, were samples for sediment/sedimentation or turbidity
collected pursuant to the sampling and analysis plan in the
SWPPP?
Did the sampling results indicate that the discharges are causing
or contributing to further impairment?
Yes No N/A Corrective Action
Storm Water Quality Construction Inspection Checklist
6 of 7
California Stormwater Quality Handbooks
Construction
January 2003
Attachment H
Storm Water Quality Construction Inspection Checklist
INSPECTION OF BMPs
BMP
If yes, were the erosion/sediment control BMPs improved or
maintained to reduce the discharge of sediment to the water
body?
Were there any BMPs not properly implemented or breaches,
malfunctions, leakages or spills observed which could result in the
discharge of pollutants to surface waters that would not be visually
detectable in storm water?
If yes, were samples for non-visually detectable pollutants
collected pursuant to the sampling and analysis plan during rain
events?
If sampling indicated pollution of the storm water, were the leaks,
breaches, spills, etc. cleaned up and the contaminated soil
properly disposed of?
Were the BMPs maintained or replaced?
Were soil amendments (e.g., gypsum, lime) used on the project?
If yes, were samples for non-visually detectable pollutants
collected pursuant to the sampling and analysis plan in the
SWPPP?
If sampling indicated pollution of the storm water by the use of the
soil amendments, is there a contingency plan for retention onsite
of the polluted storm water?
Did storm water contact stored materials or waste and run off the
construction site? (Materials not in watertight containers, etc.)
If yes, were samples for non-visually detectable pollutants
collected pursuant to the sampling and analysis plan in the
SWPPP?
Yes No N/A Corrective Action
California Stormwater Quality Handbooks
Construction
January 2003
Storm Water Quality Construction Inspection Checklist
7 of 7
Attachment I
Trained Contractor Personnel Log
Storm Water Management Training Log
Project Name:Alga Norte Community Park
Project Number/Location: Carlsbad, CA
Storm Water Management Topic: (check as appropriate)
Q Erosion Control Q Sediment Control
Q Wind Erosion Control O Tracking Control
Q Non-storm water management Q Waste Management and Materials Pollution Control
Q Storm Water Sampling
Specific Training Objective:
Location:
Instructor:
Date:
Telephone:
Course Length (hours):
Attendee Roster (attach additional forms if necessary)
Name Company Phone
Attachment I
Trained Contractor Personnel Log
Name Company Phone
COMMENTS:
Attachment J
Subcontractor Notification Letter and Notification Log
SWPPP Notification
Company
Address
City, State, ZIP
Dear Sir/Madam,
Please be advised that the California State Water Resources Control Board has adopted the General
Permit (General Permit) for Storm Water Discharges Associated with Construction Activity
(CAS000002). The goal of these permits is prevent the discharge of pollutants associated with
construction activity from entering the storm drain system, ground and surface waters.
[Owner] has developed a Storm Water Pollution Prevention Plan (SWPPP) in order to implement
the requirements of the Permits.
As a subcontractor, you are required to comply with the SWPPP and the Permits for any work that
you perform on site. Any person or group who violates any condition of the Permits may be
subject to substantial penalties in accordance with state and federal law. You are encouraged to
advise each of your employees working on this project of the requirements of the SWPPP and the
Permits. A copy of the Permits and the SWPPP are available for your review at the construction
office. Please contact me if you have further questions.
Sincerely,
Name
Title
SUBCONTRACTOR NOTIFICATION LOG
Project Name:
Project Number/Location:
Alga Norte Community Park
Carlsbad, CA
SUBCONTRACTOR
COMPANY NAME
CONTACT
NAME ADDRESS PHONE
NUMBER
PAGER/
FIELD
PHONE
DATE
NOTIFICATION
LETTER SENT
TYPE OF
WORK
USE ADDITIONAL PAGES AS NECESSARY
Attachment K
Notice of Non-Compliance
To: Name of Owner [City/Agency Engineer]/Regional Board Staff Date:
Insert Date
Subject: Notice of Non-Compliance
Project Name: Alga Norte Community Park
Project Number/Location: Carlsbad, CA
In accordance with the NPDES Statewide Permit for Storm Water Discharges Associated with
Construction Activity, the following instance of discharge is noted:
Date, time, and location of discharge
Insert description and date of event
Nature of the operation that caused the discharge
insert description of operation
Initial assessment of any impact cause by the discharge
insert assessment
Existing BMP(s) in place prior to discharge event
list BMPs in place
Date of deployment and type of BMPs deployed after the discharge.
BMPs deployed after the discharge (with dates)
Steps taken or planned to reduce, eliminate and/or prevent recurrence of the
discharge
insert steps taken to prevent recurrence
Implementation and maintenance schedule for any affected BMPs
insert implementation and maintenance schedule
Attachment K
Notice of Non-Compliance - Sample
If further information or a modification to the above schedule is required, notify the contact
person below.
Name of Contact Person Title
Company Telephone Number
Signature Date
Attachment L
Storm Water Pollution Prevention Plan (SWPPP) and Monitoring Program
Checklist
CONSTRUCTION PROJECT: Alga Norte Community Park
PREPARER: R.E. Berg Engineering, Inc.
CONTRACT NO:
SECTION A: STORM WATER POLLUTION PREVENTION PLAN (SWPPP)
CHECK IF
ADDRESSED
N/A IF NOT
APPLICABLE
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SWPPP
Section
100
100.1
100.2
200
200.1
200.2
300
300.1
300.2
300.4
400
500.2
500.2
500.2
500.2
500.4
500.4
500.4
ITEM
SWPPP Certification and Approval
SWPPP Certification
SWPPP Approval
SWPPP Amendments
Amendment number and date entered into
SWPPP - Amendment Log
Amendment Certification and Approval
Introduction/Project Description
Project Description and Location (narrative)
Unique Site Features (narrative)
Project Schedule (narrative and graphical)
References
Vicinity Map (narrative or graphic)
Site perimeter
Geographic Features
General topography
Water Pollution Control Drawings (WPCDs)
(graphic or narrative)
Site perimeter
Existing and proposed buildings, lots, and
roadways
GENERAL
PERMIT
REF.
C.10
C.10
C.10
A.4.a, A.16
A.4.a, A.16
A.4.a, A.16
A.5.a.1
A.5.3.1
A.5.C.5
A.14
A.S.a.1
A.5.3.1
A.5.3.1
A.5.a.1
A.S.a.2
A.5.3.2
A.5.a.2
COMMENTS
California Storm Water Quality Handbooks
Construction
January 2003
BMP Consideration Checklist
1 of 5
Attachment L
SWPPP and Monitoring Program Checklist
SECTION A: STORM WATER POLLUTION PREVENTION PLAN (SWPPP)
CHECK IF
ADDRESSED
N/A IF NOT
APPLICABLE
X
X
X
X
X
X
X
X
N/A
N/A
X
X
X
X
X
X
X
X
X
X
N/A
X
X
SWPPP
Section
500.4
500.4
500.4
500.4
500.4
500.3
500.4
500.4
Attach. E
500.4
500.4
500.4
500.4
500.3.3
500.3.8 &
500.3.9
500.3.8 &
500.4
500.3.8 &
500.4
500.3.9 &
500.4
500.3.9 &
500.4
500.3.8 &
500.3.9
500.3.9 &
500.4
500.3.9 &
500.4
ITEM
Storm water collection and discharge points
General topography before and after
construction
Anticipated discharge location(s)
Drainage patterns including the entire relevant
drainage areas
Temporary on-site drainage(s)
Pollutant Source and BMP Identification
(narrate/ or indicate on site map)
Drainage
Drainage patterns after major grading
Slopes after major grading
Calculations for storm water run-on
BMPs that divert off-site drainage from
passing through site
Storm Water Inlets
Drainage patterns to storm water inlets or
receiving water
BMPs that protect storm water inlets or
receiving water
Site History (narrative; if possible, indicate
location(s) on the Water Pollution Control
Drawings)
Nature of fill material and data describing the
soil. Description of toxic materials treated,
stored, disposed, spilled or leaked on site
BMPs that minimize contact of contaminants
with storm water
Location of Areas Designated for:
Vehicle storage & service
Equipment storage, cleaning, maintenance
Soil or waste storage
Construction material loading, unloading,
storage and access
Areas outside of physical site (yards, borrow
areas, etc.)
BMP Locations or Descriptions for:
Waste handling and disposal areas
On-site storage and disposal of construction
materials and waste
GENERAL
PERMIT
REF.
A.5.a.2
A.S.a.2
A.5.3.2
A.S.a.2
A.5.3.2
A.5.b
A.5.b.1
A.5.b.1
A.5.b.1
A.5.b.1
A.5.b.1
A.5.b.2
A.5.b.2
A.5.b.2
A.S.b
A.5.b.3
A.5.b.3
A.5.b.4
A.5.b.4
A.5.b.4
A.5.b.4
A.5.b.4
A.S.b.5
A.S.b.5
A.5.b.5
COMMENTS
California Storm Water Quality Handbooks
Construction
January 2003
BMP Consideration Checklist
2 of 5
Attachment L
SWPPP and Monitoring Program Checklist
SECTION A: STORM WATER POLLUTION PREVENTION PLAN (SWPPP)
CHECK IF
ADDRESSED
N/A IF NOT
APPLICABLE
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SWPPP
Section
500.3.8,
500.3.9 &
500.4
500.6
500.6.1
500.4
500.6.2
500.3.1
500.3.2
500.3.1
500.3.8 &
500.3.9
300.4
300.4
Attach. F
300.3
300.5
500.4.1
500.4
500.4
500.4
300.4
500.3.4
500.3.7
500.3.5
500.3.5 &
500.4
300.4,
500.3.5
ITEM
Minimum exposure of storm water to
construction materials, equipment, vehicles,
waste
Post Construction BMPs
Listing or Description of Post-construction
BMPs
Location of post-construction BMPs
Parties responsible for long-term maintenance
Additional Information
Description of other pollutant sources and
BMPs
Pre-construction control practices
Inventory of materials and activities that may
pollute storm water
BMPs to reduce/eliminate potential pollutants
listed in the inventory
Runoff coefficient (before & after)
Percent impervious (before & after)
Copy of the NOT
Construction activity schedule
Contact information
SOIL STABILIZATION (EROSION
CONTROL)
The SWPPP shall include:
Areas of vegetation on site
Areas of soil disturbance that will be stabilized
during rainy season
Areas of soil disturbance which will be
exposed during any part of the rainy season
Implementation schedule for erosion control
measures
BMPs for erosion control
BMPs to control wind erosion
SEDIMENT CONTROL
Description/Illustration of BMPs to prevent
increase of sediment load in discharge
Implementation schedule for sediment control
measures
GENERAL
PERMIT
REF.
A.S.b.5
A.5.b.6
A.5.b.6
A.5.D.6
A.5.b.6
A.5.C
A.5.C.1
A.5.C.1
A.S.c.2
A.5.C.2
A.5.C.3
A.5.C.3
A.5.C.4
A.5.C.5
A.5.C.6
A.6
A.6.a-c
A.6.a.1
A.6.a.2
A.6.a.3
A.6.a.4
A.6.b
A.6.C
A.8
A.8
A.8
COMMENTS
California Storm Water Quality Handbooks
Construction
January 2003
BMP Consideration Checklist
3 of 5
Attachment L
SWPPP and Monitoring Program Checklist
SECTION A: STORM WATER POLLUTION PREVENTION PLAN (SWPPP)
CHECK IF
ADDRESSED
N/A IF NOT
APPLICABLE
X
X
X
X
X
X
X
X
X
X
X
SWPPP
Section
500.3.6
500.3.8 &
500.3.9
500.3.8 &
500.3.9
500.3.8 &
500.3.9
500.3.8 &
500.3.9
300.5
500.6
500.6.1
500.6.2
500.5
300.5,
600.1
600.1,
Attach. H
500.7
500.8
ITEM
BMPs to control sediment tracking
NON-STORM WATER MANAGEMENT
Description of non-storm water discharges to
receiving waters
Locations of discharges
Description of BMPs
Name and phone number of person
responsible for non-storm water management
POST-CONSTRUCTION
Description of post-construction BMPs
Operation/Maintenance of BMPs after project
completion (including short-term funding,
long-term funding and responsible party)
MAINTENANCE, INSPECTIONS, AND
REPAIR
Name and phone number of person(s)
responsible for inspections
Complete inspection checklist: date, weather,
inadequate BMPs, visual observations of
BMPs, corrective action, inspector's name,
title, signature
OTHER REQUIREMENTS
Documentation of all training
List of Contractors/Subcontractors
GENERAL
PERMIT
REF.
A.8
A.9
A.9
A.9
A.9
A.9
A.10
A.10
A.10
A.11
A.11
A.11.a-f
A. 12-1 6
A.12
A.13
COMMENTS
SECTION B: MONITORING AND REPORTING REQUIREMENTS
CHECK IF
ADDRESSED
N/A IF NOT
APPLICABLE
X
X
X
X
N/A
X
SWPPP
Section
600.1
100.3
600.2
600.3
600.4
600.5
ITEM
Description of Site Inspection Plans
Compliance certification (annually 7/1)
Discharge reporting
Keep records of all inspections, compliance
certifications, and noncompliance reports on
site for a period of at least three years
Sampling and Analysis Plan for Sediment
Sampling and Analysis Plan for Non-Visible
Pollutants
GENERAL
PERMIT
REF.
B.3
B.4
B.5
B.6
B.7
B.8
COMMENTS
California Storm Water Quality Handbooks
Construction
January 2003
BMP Consideration Checklist
4 of 5
Attachment L
SWPPP and Monitoring Program Checklist
SECTION C: STANDARD PROVISIONS FOR CONSTRUCTION ACTIVITIES
CHECK IF
ADDRESSED
N/A IF NOT
APPLICABLE
X
SWPPP
Section
100.1
ITEM
Signed SWPPP Certification
GENERAL
PERMIT
REF.
C.9,10
COMMENTS
California Storm Water Quality Handbooks
Construction
January 2003
BMP Consideration Checklist
5 of 5
Attachment M
Annual Certification of Compliance Form
Project Name:
Project Number:
Company Name:
Address:
Construction Start Date:
Alga Norte Community Park
Completion Date:
This project is in compliance with the General Permit and this SWPPP (check yes or no)
Description of Work:
YES NO
Work Now in Progress:
Work Planned for Next 12 Months:
"I certify under penalty of law that, during the past 12 months, the construction activities are in compliance with the requirements of the
General Permit and this SWPPP. This Certification is based upon the site inspections required in Section B, Item 3 of the General Permit.
This document was 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."
Owner (or Authorized Representative) Signature Date
Name and Title Telephone Number
Attachment N
Other Plans and Permits
STATE WATER RESOURCES CONTROL BOARD (SWRCB)
ORDER NO. 99 - 08 - DWQ
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES)
GENERAL PERMIT NO. CAS000002
WASTE DISCHARGE REQUIREMENTS (WDRS)
FOR
DISCHARGES OF STORM WATER RUNOFF ASSOCIATED WITH
CONSTRUCTION ACTIVITY
The State Water Resources Control Board finds that:
1. Federal regulations for controlling pollutants in storm water runoff discharges were
promulgated by the U.S. Environmental Protection Agency (USEPA) on November 16, 1990
(40 Code of Federal Regulations (CFR) Parts 122, 123, and 124). The regulations require
discharges of storm water to surface waters associated with construction activity including
clearing, grading, and excavation activities (except operations that result in disturbance of
less than five acres of total land area and which are not part of a larger common plan of
development or sale) to obtain an NPDES permit and to implement Best Available
Technology Economically Achievable (BAT) and Best Conventional Pollutant Control
Technology (BCT) to reduce or eliminate storm water pollution.
On December 8, 1999 federal regulations promulgated by USEPA (40CFR Parts 9, 122, 123,
and 124) expanded the NPDES storm water program to include storm water discharges from
municipal separate storm sewer systems (MS4s) and construction sites that were smaller than
those previously included in the program. Federal regulation 40 CFR § 122.26(b)(15)
defines small construction activity as including clearing, grading, and excavating that result
in land disturbance of equal to or greater than one acre or less than five acres or is part of a
larger common plan of development or sale. Permit applications for small construction
activities are due by March 10, 2003.
2. This General Permit regulates pollutants in discharges of storm water associated with
construction activity (storm water discharges) to surface waters, except from those areas
on Tribal Lands; Lake Tahoe Hydrologic Unit; construction projects which disturb less
than one acre, unless part of a larger common plan of development or sale; and storm
water discharges which are determined ineligible for coverage under this General Permit
by the California Regional Water Quality Control Boards (RWQCBs). Attachment 1
contains addresses and telephone numbers of each RWQCB office.
3. 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 separate
storm sewer systems or other watercourses within their jurisdiction, as allowed by State
and Federal law.
Pagel
4. To obtain authorization for proposed storm water discharges to surface waters, pursuant
to this General Permit, the landowner (discharger) must submit a Notice of Intent (NOI)
with a vicinity map and the appropriate fee to the SWRCB prior to commencement of
construction activities. In addition, coverage under this General Permit shall not occur
until the applicant develops a Storm Water Pollution Prevention Plan (SWPPP) in
accordance with the requirements of Section A of this permit for the project. For
proposed construction activity conducted on easements or on nearby property by
agreement or permission, or by an owner or lessee of a mineral estate (oil, gas,
geothermal, aggregate, precious metals, and/or industrial minerals) entitled to conduct the
activities, the entity responsible for the construction activity must submit the NOI and
filing fee and shall be responsible for development of the SWPPP.
5. If an individual NPDES Permit is issued to a discharger otherwise subject to this General
Permit or if an alternative General Permit is subsequently adopted which covers storm
water discharges regulated by this General Permit, the applicability of this General
Permit to such discharges is automatically terminated on the effective date of the
individual permit or the date of approval for coverage under the subsequent General
Permit.
6. This action to adopt an NPDES permit is exempt from the provisions of the California
Environmental Quality Act (Public Resources Code Section 21100, et seq.) in accordance
with section 13389 of the California Water Code.
7. The SWRCB adopted the California Ocean Plan, and the RWQCBs have adopted and the
SWRCB has approved Water Quality Control Plans (Basin Plans). Dischargers regulated
by this General Permit must comply with the water quality standards in these Basin Plans
and subsequent amendments thereto.
8. The SWRCB finds storm water discharges associated with construction activity to be a
potential significant sources of pollutants. Furthermore, the SWRCB finds that storm
water discharges associated with construction activities have the reasonable potential to
cause or contribute to an excursion above water quality standards for sediment in the
water bodies listed in Attachment 3 to this permit.
9. It is not feasible at this time to establish numeric effluent limitations for pollutants in
storm water discharges from construction activities. Instead, the provisions of this
General Permit require implementation of Best Management Practices (BMPs) to control
and abate the discharge of pollutants in storm water discharges.
10. Discharges of non-storm water may be necessary for the completion of certain
construction projects. Such discharges include, but are not limited to: irrigation of
vegetative erosion control measures, pipe flushing and testing, street cleaning, and
dewatering. Such discharges are authorized by this General Permit as long as they (a) do
comply with Section A.9 of this General Permit, (b) do not cause or contribute to
violation of any water quality standard, (c) do not violate any other provision of this
Page 2
General Permit, (d) do not require a non-storm water permit as issued by some RWQCBs,
and (e) are not prohibited by a Basin Plan. If a non-storm water discharge is subject to a
separate permit adopted by a RWQCB, the discharge must additionally be authorized by
the RWQCB permit.
11. Following adoption of this General Permit, the RWQCBs shall enforce the provisions
herein including the monitoring and reporting requirements.
12. Following public notice in accordance with State and Federal laws and regulations, the
SWRCB in a public meeting on June 8, 1998, heard and considered all comments. The
SWRCB has prepared written responses to all significant comments.
13. This Order is an NPDES permit in compliance with section 402 of the Clean Water Act
(CWA) and shall take effect upon adoption by the SWRCB provided the Regional
Administrator of the USEPA has no objection. If the USEPA Regional Administrator
objects to its issuance, the General Permit shall not become effective until such objection
is withdrawn.
14. This General Permit does not authorize discharges of fill or dredged material regulated
by the U.S. Army Corps of Engineers under CWA section 404 and does not constitute a
waiver of water quality certification under CWA section 401.
15 The Monitoring Program and Reporting Requirements are modified in compliance with a
judgment in the case of San Francisco BayKeeper. et al. v. State Water Resources
Control Board. The modifications include sampling and analysis requirements for direct
discharges of sediment to waters impaired due to sediment and for pollutants that are not
visually detectable in runoff that may cause or contribute to an exceedance of water
quality objectives.
16 Storm water discharges associated with industrial activity that are owned or operated by
municipalities serving populations less than 100,000 people are no longer exempt from
the need to apply for or obtain a storm water discharge permit. A temporary exemption,
which was later extended by USEPA, was provided under section 1068(c) of the
Intermodal Surface Transportation and Efficiency Act (ISTEA) of 1991. Federal
regulation 40 CFR § 122.26(e)(l)(ii) requires the above municipalities to submit permit
application by March 10, 2003.
17 This permit may be reopened and modified to include different monitoring requirements
for small construction activity than for construction activity over five (5) acres.
PageS
IT IS HEREBY ORDERED that all dischargers who file an NOI indicating their intention to be
regulated under the provisions of this General Permit shall comply with the following:
A. DISCHARGE PROHIBITIONS:
1. Authorization pursuant to this General Permit does not constitute an exemption to
applicable discharge prohibitions prescribed in Basin Plans, as implemented by
the nine RWQCBs.
2. Discharges of material other than storm water which are not otherwise authorized
by an NPDES permit to a separate storm sewer system (MS4) or waters of the
nation are prohibited, except as allowed in Special Provisions for Construction
Activity, C.3.
3. Storm water discharges shall not cause or threaten to cause pollution,
contamination, or nuisance.
4. Storm water discharges regulated by this General Permit shall not contain a
hazardous substance equal to or in excess of a reportable quantity listed in
40 CFR Part 117 and/or 40 CFR Part 302.
B. RECEIVING WATER LIMITATIONS:
1. Storm water discharges and authorized nonstorm water discharges to any surface
or ground water shall not adversely impact human health or the environment.
2. The SWPPP developed for the construction activity covered by this General
Permit shall be designed and implemented such that storm water discharges and
authorized nonstorm water discharges shall not cause or contribute to an
exceedance of any applicable water quality standards contained in a Statewide
Water Quality Control Plan and/or the applicable RWQCB's Basin Plan.
3. Should it be determined by the discharger, SWRCB, or RWQCB that storm water
discharges and/or authorized nonstorm water discharges are causing or
contributing to an exceedance of an applicable water quality standard, the
discharger shall:
a. Implement corrective measures immediately following discovery that
water quality standards were exceeded, followed by notification to the
RWQCB by telephone as soon as possible but no later than 48 hours after
the discharge has been discovered. This notification shall be followed by
a report within 14-calender days to the appropriate RWQCB, unless
otherwise directed by the RWQCB, describing (1) the nature and cause of
the water quality standard exceedance; (2) the BMPs currently being
implemented; (3) any additional BMPs which will be implemented to
Page 4
prevent or reduce pollutants that are causing or contributing to the
exceedance of water quality standards; and (4) any maintenance or repair
of BMPs. This report shall include an implementation schedule for
corrective actions and shall describe the actions taken to reduce the
pollutants causing or contributing to the exceedance.
b. The discharger shall revise its SWPPP and monitoring program
immediately after the report to the RWQCB to incorporate the additional
BMPs that have been and will be implemented, the implementation
schedule, and any additional monitoring needed.
c. Nothing in this section shall prevent the appropriate RWQCB from
enforcing any provisions of this General Permit while the discharger
prepares and implements the above report.
C. SPECIAL PROVISIONS FOR CONSTRUCTION ACTIVITY:
1. All dischargers shall file an NOI and pay the appropriate fee for construction
activities conducted at each site as required by Attachment 2: Notice of Intent-
General Instructions.
2. All dischargers shall develop and implement a SWPPP in accordance with
Section A: Storm Water Pollution Prevention Plan. The discharger shall
implement controls to reduce pollutants in storm water discharges from their
construction sites to the BAT/BCT performance standard.
3. Discharges of non-storm water are authorized only where they do not cause or
contribute to a violation of any water quality standard and are controlled through
implementation of appropriate BMPs for elimination or reduction of pollutants.
Implementation of appropriate BMPs is a condition for authorization of non-
storm water discharges. Non-storm water discharges and the BMPs appropriate
for their control must be described in the SWPPP. Wherever feasible, alternatives
which do not result in discharge of nonstorm water shall be implemented in
accordance with Section A.9. of the SWPPP requirements.
4. All dischargers shall develop and implement a monitoring program and reporting
plan in accordance with Section B: Monitoring Program and Reporting
Requirements.
5. All dischargers shall comply with the lawful requirements of municipalities,
counties, drainage districts, and other local agencies regarding discharges of
storm water to separate storm sewer systems or other watercourses under their
jurisdiction, including applicable requirements in municipal storm water
management programs developed to comply with NPDES permits issued by the
RWQCBs to local agencies.
Page 5
6. All dischargers shall comply with the standard provisions and reporting
requirements contained in Section C: Standard Provisions.
7. The discharger may terminate coverage for a portion of the project under this
General Permit when ownership of a portion of this project has been transferred
or when a phase within this multi-phase project has been completed. When
ownership has transferred, the discharger must submit to its RWQCB a Change of
Information Form (COI) Attachment 4 with revised site map and the name,
address and telephone number of the new owner(s). Upon transfer of title, the
discharger should notify the new owner(s) of the need to obtain coverage under
this General Permit. The new owner must comply with provisions of Sections A.
2. (c) and
B. 2. (b) of this General Permit. To terminate coverage for a portion of the project
when a phase has been completed, the discharger must submit to its RWQCB a
COI with a revised map that identifies the newly delineated site.
8. The discharger may terminate coverage under this General Permit for a complete
project by submitting to its RWQCB a Notice of Termination Form (NOT), and
the post-construction BMPs plan according to Section A. 10 of this General
Permit. Note that a construction project is considered complete only when all
portions of the site have been transferred to a new owner; or the following
conditions have been met:
a. There is no potential for construction related storm water pollution,
b. All elements of the SWPPP have been completed,
c. Construction materials and waste have been disposed of properly,
d. The site is in compliance with all local storm water management
requirements, and
e. A post-construction storm water management plan is in place as described
in the site's SWPPP.
9. This General Permit expires five years from the date of adoption.
Page 6
D. REGIONAL WATER QUALITY CONTROL BOARD (RWQCB) AUTHORITIES:
1. RWQCBs shall:
a. Implement the provisions of this General Permit. Implementation of this
General Permit may include, but is not limited to requesting the submittal
of SWPPPS, reviewing SWPPPs, reviewing monitoring reports,
conducting compliance inspections, and taking enforcement actions.
b. Issue permits as they deem appropriate to individual dischargers,
categories of dischargers, or dischargers in a geographic area. Upon
issuance of such permits by a RWQCB, the affected dischargers shall no
longer be regulated by this General Permit.
2. RWQCBs may require, on a case-by-case basis, the inclusion of an analysis of
potential downstream impacts on receiving waterways due to the permitted
construction.
3. RWQCBs may provide information to dischargers on the development and
implementation of SWPPPs and monitoring programs and may require revisions
to SWPPPs and monitoring programs.
4. RWQCBs may require dischargers to retain records for more than three years.
5. RWQCBs may require additional monitoring and reporting program requirements
including sampling and analysis of discharges to water bodies listed in
Attachment 3 to this permit. Additional requirements imposed by the RWQCB
should be consistent with the overall monitoring effort in the receiving waters.
6. RWQCBs may issue individual NPDES permits for those construction activities
found to be ineligible for coverage under this permit.
Page 7
CERTIFICATION
The undersigned, Administrative Assistant to the Board, does hereby certify that the foregoing is
a full, true, and correct copy of an order duly and regularly adopted at a meeting of the State
Water Resources Control Board held on August 19, 1999.
AYE: James M. Stubchaer
Mary Jane Forster
John W. Brown
Arthur G. Baggett, Jr.
NO: None
ABSENT: None
ABSTAIN: None
/s/
Maureen Marche
Administrative Assistant to the Board
PageS
SECTION A: STORM WATER POLLUTION PREVENTION PLAN
1. Objectives
A Storm Water Pollution Prevention Plan (SWPPP) shall be developed and implemented
to address the specific circumstances for each construction site covered by this General
Permit. The SWPPP shall be certified in accordance with the signatory requirements of
section C, Standard Provision for Construction Activities (9). The SWPPP shall be
developed and amended or revised, when necessary, to meet the following objectives:
a. Identify all pollutant sources including sources of sediment that may affect the
quality of storm water discharges associated with construction activity (storm
water discharges) from the construction site, and
b. Identify non-storm water discharges, and
c. Identify, construct, implement in accordance with a time schedule, and maintain
Best Management Practices (BMPs) to reduce or eliminate pollutants in storm
water discharges and authorized nonstorm water discharges from the construction
site during construction, and
d. Develop a maintenance schedule for BMPs installed during construction designed
to reduce or eliminate pollutants after construction is completed (post-
construction BMPs).
e. Identify a sampling and analysis strategy and sampling schedule for discharges
from construction activity which discharge directly into water bodies listed on
Attachment 3. (Clean Water Act Section 303(d) [303(d)] Water Bodies listed for
Sedimentation).
f. For all construction activity, identify a sampling and analysis strategy and
sampling schedule for discharges that have been discovered through visual
monitoring to be potentially contaminated by pollutants not visually detectable in
the runoff.
2. Implementation Schedule
a. For construction activity commencing on or after adoption of this General Permit,
the SWPPP shall be developed prior to the start of soil-disturbing activity in
accordance with this Section and shall be implemented concurrently with
commencement of soil-disturbing activities.
b. Existing permittees engaging in construction activities covered under the terms of
the previous General Construction Permit SWPPP (WQ Order No.92-08-DWQ)
shall continue to implement their existing SWPPP and shall implement any
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necessary revisions to their SWPPP in accordance with this Section of the
General Permit in a timely manner, but in no case more than 90-calender days
from the date of adoption of this General Permit.
c. For ongoing construction activity involving a change of ownership of property,
the new owner shall review the existing SWPPP and amend if necessary, or
develop a new SWPPP within 45-calender days.
d. Existing permittees shall revise their SWPPP in accordance with the sampling and
analysis modifications prior to August 1, 2001. For ongoing construction activity
involving a change of ownership the new owner shall review the existing SWPPP
and amend the sampling and analysis strategy, if required, within 45 days. For
construction activity commencing after the date of adoption, the SWPPP shall be
developed in accordance with the modification language adopted.
3. Availability
The SWPPP shall remain on the construction site while the site is under construction
during working hours, commencing with the initial construction activity and ending with
termination of coverage under the General Permit.
4. Required Changes
a. The discharger shall amend the SWPPP whenever there is a change in
construction or operations which may affect the discharge of pollutants to surface
waters, ground waters, or a municipal separate storm sewer system (MS4). The
SWPPP shall also be amended if the discharger violates any condition of this
General Permit or has not achieved the general objective of reducing or
eliminating pollutants in storm water discharges. If the RWQCB determines that
the discharger is in violation of this General Permit, the SWPPP shall be amended
and implemented in a timely manner, but in no case more than 14-calendar days
after notification by the RWQCB. All amendments should be dated and directly
attached to the SWPPP.
b. The RWQCB or local agency with the concurrence of the RWQCB may require
the discharger to amend the SWPPP.
5. Source Identification
The SWPPP shall include: (a) project information and (b) pollutant source identification
combined with an itemization of those BMPs specifically chosen to control the pollutants
listed.
a. Project Information
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(1) The SWPPP shall include a vicinity map locating the project site with
respect to easily identifiable major roadways, geographic features, or
landmarks. At a minimum, the map must show the construction site
perimeter, the geographic features surrounding the site, and the general
topography.
(2) The SWPPP shall include a site map(s) which shows the construction
project in detail, including the existing and planned paved areas and
buildings.
(a) At a minimum, the map must show the construction site perimeter;
existing and proposed buildings, lots, roadways, storm water
collection and discharge points; general topography both before
and after construction; and the anticipated discharge location(s)
where the storm water from the construction site discharges to a
municipal storm sewer system or other water body.
(b) The drainage patterns across the project area must clearly be
shown on the map, and the map must extend as far outside the site
perimeter as necessary to illustrate the relevant drainage areas.
Where relevant drainage areas are too large to depict on the map,
map notes or inserts illustrating the upstream drainage areas are
sufficient.
(c) Temporary on-site drainages to carry concentrated flow shall be
selected to comply with local ordinances, to control erosion, to
return flows to their natural drainage courses, and to prevent
damage to downstream properties.
3. Information presented in the SWPPP may be represented either by
narrative or by graphics. Where possible, narrative descriptions should be
plan notes. Narrative descriptions which do not lend themselves to plan
notes can be contained in a separate document which must be referenced
on the plan.
b. Pollutant Source and BMP Identification
The SWPPP shall include a description of potential sources which are likely to
add pollutants to storm water discharges or which may result in nonstorm water
discharges from the construction site. Discharges originating from off-site which
flow across or through areas disturbed by construction that may contain pollutants
should be reported to the RWQCB.
The SWPPP shall:
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(1) Show drainage patterns and slopes anticipated after major grading
activities are completed. Runoff from off-site areas should be prevented
from flowing through areas that have been disturbed by construction
unless appropriate conveyance systems are in place. The amount of
anticipated storm water run-on must be considered to determine the
appropriateness of the BMPs chosen. Show all calculations for
anticipated storm water run-on, and describe all BMPs implemented to
divert off-site drainage described in section A. 5 a. (2) (c) around or
through the construction project.
(2) Show the drainage patterns into each on-site storm water inlet point or
receiving water. Show or describe the BMPs that will protect operational
storm water inlets or receiving waters from contaminated discharges other
than sediment discharges, such as, but not limited to: storm water with
elevated pH levels from contact with soil amendments such as lime or
gypsum; slurry from sawcutting of concrete or asphalt ;washing of
exposed aggregate concrete; concrete rinse water; building washing
operations; equipment washing operations; minor street washing
associated with street delineation; and/or sealing and paving activities
occurring during rains.
(3) Show existing site features that, as a result of known past usage, may
contribute pollutants to storm water, (e.g., toxic materials that are known
to have been treated, stored, disposed, spilled, or leaked onto the
construction site). Show or describe the BMPs implemented to minimize
the exposure of storm water to contaminated soil or toxic materials.
(4) Show areas designated for the (a) storage of soil or waste, (b) vehicle
storage and service areas, (c) construction material loading, unloading,
and access areas, (d) equipment storage, cleaning, and maintenance areas.
(5) Describe the BMPs for control of discharges from waste handling and
disposal areas and methods of on-site storage and disposal of construction
materials and construction waste. Describe the BMPs designed to
minimize or eliminate the exposure of storm water to construction
materials, equipment, vehicles, waste storage areas, or service areas. The
BMPs described shall be in compliance with Federal, State, and local
laws, regulations, and ordinances.
(6) Describe all post-construction BMPs for the project, and show the location
of each BMP on the map. (Post-construction BMPs consist of permanent
features designed to minimize pollutant discharges, including sediment,
from the site after construction has been completed.) Also, describe the
agency or parties to be the responsible party for long-term maintenance of
these BMPs.
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(7) Show the locations of direct discharge from the construction site into a
Section 303(d) list water body. Show the designated sampling locations in
the receiving waters, which represent the prevailing conditions of the
water bodies upstream of the construction site discharge and immediately
downstream from the last point of discharge.
(8) Show the locations designated for sampling the discharge from areas
identified in Section A. 5. b. (2), (3), and (4) and Section A. 5. c. (1) and
(2). Samples shall be taken should visual monitoring indicate that there
has been a breach, malfunction, leakage, or spill from a BMP which could
result in the discharge in storm water of pollutants that would not be
visually detectable, or if storm water comes into contact with soil
amendments or other exposed materials or contamination and is allowed
to be discharged. Describe the sampling procedure, location, and rationale
for obtaining the uncontaminated sample of storm water.
c. Additional Information
(1) The SWPPP shall include a narrative description of pollutant sources and
BMPs that cannot be adequately communicated or identified on the site
map. In addition, a narrative description of preconstruction control
practices (if any) to reduce sediment and other pollutants in storm water
discharges shall be included.
(2) The SWPPP shall include an inventory of all materials used and activities
performed during construction that have the potential to contribute to the
discharge of pollutants other than sediment in storm water. Describe the
BMPs selected and the basis for their selection to eliminate or reduce
these pollutants in the storm water discharges.
(3) The SWPPP shall include the following information regarding the
construction site surface area: the size (in acres or square feet), the runoff
coefficient before and after construction, and the percentage that is
impervious (e.g., paved, roofed, etc.) before and after construction.
(4) The SWPPP shall include a copy of the NOI, and the Waste Discharge
Identification (WDID) number. Should a WDID number not be received
from the SWRCB at the time construction commences, the discharger
shall include proof of mailing of the NOI, e.g., certified mail receipt, copy
of check, express mail receipt, etc.
(5) The SWPPP shall include a construction activity schedule which describes
all major activities such as mass grading, paving, lot or parcel
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improvements at the site and the proposed time frame to conduct those
activities.
(6) The SWPPP shall list the name and telephone number of the qualified
person(s) who have been assigned responsibility for prestorm, poststorm,
and storm event BMP inspections; and the qualified person(s) assigned
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.
6. Erosion Control
Erosion control, also referred to as "soil stabilization" is the most effective way to retain
soil and sediment on the construction site. The most efficient way to address erosion
control is to preserve existing vegetation where feasible, to limit disturbance, and to
stabilize and revegetate disturbed areas as soon as possible after grading or construction.
Particular attention must be paid to large mass-graded sites where the potential for soil
exposure to the erosive effects of rainfall and wind is great. Mass graded construction
sites may be exposed for several years while the project is being built out. Thus, there is
potential for significant sediment discharge from the site to surface waters.
At a minimum, the discharger/operator must implement an effective combination of
erosion and sediment control on all disturbed areas during the rainy season. These
disturbed areas include rough graded roadways, slopes, and building pads. Until
permanent vegetation is established, soil cover is the most cost-effective and expeditious
method to protect soil particles from detachment and transport by rainfall. Temporary
soil stabilization can be the single-most important factor in reducing erosion at
construction sites. The discharger shall consider measures such as: covering with mulch,
temporary seeding, soil stabilizers, binders, fiber rolls or blankets, temporary vegetation,
permanent seeding, and a variety of other measures.
The SWPPP shall include a description of the erosion control practices, including a time
schedule, to be implemented during construction to minimize erosion on disturbed areas
of a construction site. The discharger must consider the full range of erosion control
BMPs. The discharger must consider any additional site-specific and seasonal conditions
when selecting and implementing appropriate BMPs. The above listed erosion control
measures are examples of what should be considered and are not exclusive of new or
innovative approaches currently available or being developed.
a. The SWPPP shall include:
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(1) An outline of the areas of vegetative soil cover or native vegetation onsite
which will remain undisturbed during the construction project.
(2) An outline of all areas of soil disturbance including cut or fill areas which
will be stabilized during the rainy season by temporary or permanent
erosion control measures, such as seeding, mulch, or blankets, etc.
(3) An outline of the areas of soil disturbance, cut, or fill which will be left
exposed during any part of the rainy season, representing areas of
potential soil erosion where sediment control BMPs are required to be
used during construction.
(4) A proposed schedule for the implementation of erosion control measures.
b. The SWPPP shall include a description of the BMPs and control practices to be
used for both temporary and permanent erosion control measures.
c. The SWPPP shall include a description of the BMPs to reduce wind erosion at all
times, with particular attention paid to stock-piled materials.
7. Stabilization
(1) All disturbed areas of the construction site must be stabilized. Final
stabilization for the purposes of submitting a NOT is satisfied when:
-All soil disturbing activities are completed AND EITHER OF THE
TWO FOLLOWING CRITERIA ARE MET:
-A uniform vegetative cover with 70 percent coverage has been
established OR:
-equivalent stabilization measures have been employed. These
measures include the use of such BMPs as blankets, reinforced
channel liners, soil cement, fiber matrices, geotextiles, or other
erosion resistant soil coverings or treatments.
(2) Where background native vegetation covers less than 100 percent of the
surface, such as in arid areas, the 70 percent coverage criteria is adjusted
as follows: If the native vegetation covers 50 percent of the ground
surface, 70 percent of 50 percent (.70 X .50=35) would require 35 percent
total uniform surface coverage.
8. Sediment Control
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The SWPPP shall include a description or illustration of BMPs which will be
implemented to prevent a net increase of sediment load in storm water discharge relative
to preconstruction levels. Sediment control BMPs are required at appropriate locations
along the site perimeter and at all operational internal inlets to the storm drain system at
all times during the rainy season. Sediment control practices may include filtration
devices and barriers (such as fiber rolls, silt fence, straw bale barriers, and gravel inlet
filters) and/or settling devices (such as sediment traps or basins). Effective filtration
devices, barriers, and settling devices shall be selected, installed and maintained properly.
A proposed schedule for deployment of sediment control BMPs shall be included in the
SWPPP. These are the most basic measures to prevent sediment from leaving the project
site and moving into receiving waters. Limited exemptions may be authorized by the
RWQCB when work on active areas precludes the use of sediment control BMPs
temporarily. Under these conditions, the SWPPP must describe a plan to establish
perimeter controls prior to the onset of rain.
During the nonrainy season, the discharger is responsible for ensuring that adequate
sediment control materials are available to control sediment discharges at the downgrade
perimeter and operational inlets in the event of a predicted storm. The discharger shall
consider a full range of sediment controls, in addition to the controls listed above, such as
straw bale dikes, earth dikes, brush barriers, drainage swales, check dams, subsurface
drain, sandbag dikes, fiber rolls, or other controls. At a minimum, the
discharger/operator must implement an effective combination of erosion and sediment
control on all disturbed areas during the rainy season.
If the discharger chooses to rely on sediment basins for treatment purposes, sediment
basins shall, at a minimum, be designed and maintained as follows:
Option 1: Pursuant to local ordinance for sediment basin design and maintenance,
provided that the design efficiency is as protective or more protective of
water quality than Option 3.
OR
Option 2: Sediment basin(s), as measured from the bottom of the basin to the
principal outlet, shall have at least a capacity equivalent to 3,600 cubic
feet of storage per acre draining into the sediment basin. The length of the
basin shall be more than twice the width of the basin. The length is
determined by measuring the distance between the inlet and the outlet; and
the depth must not be less than three feet nor greater than five feet for
safety reasons and for maximum efficiency.
OR
Option 3: Sediment basin(s) shall be designed using the standard equation:
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As=1.2Q/Vs
Where: As is the minimum surface area for trapping soil particles of a
certain size; Vs is the settling velocity of the design particle size chosen;
and Q=C x I x A where Q is the discharge rate measured in cubic feet per
second; C is the runoff coefficient; I is the precipitation intensity for the
10-year, 6-hour rain event and A is the area draining into the sediment
basin in acres. The design particle size shall be the smallest soil grain size
determined by wet sieve analysis, or the fine silt sized (0.01mm) particle,
and the Vs used shall be 100 percent of the calculated settling velocity.
The length is determined by measuring the distance between the inlet and
the outlet; the length shall be more than twice the dimension as the width;
the depth shall not be less than three feet nor greater than five feet for
safety reasons and for maximum efficiency (two feet of storage, two feet
of capacity). The basin(s) shall be located on the site where it can be
maintained on a year-round basis and shall be maintained on a schedule to
retain the two feet of capacity;
OR
Option 4: The use of an equivalent surface area design or equation, provided that the
design efficiency is as protective or more protective of water quality than
OptionS.
A sediment basin shall have a means for dewatering within 7-calendar days following a
storm event. Sediment basins may be fenced if safety (worker or public) is a concern.
The outflow from a sediment basin that discharges into a natural drainage shall be
provided with outlet protection to prevent erosion and scour of the embankment and
channel.
The discharger must consider any additional site-specific and seasonal conditions when
selecting and designing sediment control BMPs. The above listed sediment control
measures are examples of what should be considered and are not exclusive of new or
innovative approaches currently available or being developed.
The SWPPP shall include a description of the BMPs to reduce the tracking of sediment
onto public or private roads at all times. These public and private roads shall be
inspected and cleaned as necessary. Road cleaning BMPs shall be discussed in the
SWPPP and will not rely on the washing of accumulated sediment or silt into the storm
drain system.
9. Non-Storm Water Management
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Describe all non-storm water discharges to receiving waters that are proposed for the
construction project. Non-storm water discharges should be eliminated or reduced to the
extent feasible. Include the locations of such discharges and descriptions of all BMPs
designed for the control of pollutants in such discharges. Onetime discharges shall be
monitored during the time that such discharges are occurring. A qualified person should
be assigned the responsibility for ensuring that no materials other than storm water are
discharged in quantities which will have an adverse effect on receiving waters or storm
drain systems (consistent with BAT/BCT), and the name and contact number of that
person should be included in the SWPPP document.
Discharging sediment-laden water which will cause or contribute to an exceedance of the
applicable RWQCB's Basin Plan from a dewatering site or sediment basin into any
receiving water or storm drain without filtration or equivalent treatment is prohibited.
10. Post-Construction Storm Water Management
The SWPPP shall include descriptions of the BMPs to reduce pollutants in storm water
discharges after all construction phases have been completed at the site (Post-
Construction BMPs). Post-Construction BMPs include the minimization of land
disturbance, the minimization of impervious surfaces, treatment of storm water runoff
using infiltration, detention/retention, biofilter BMPs, use of efficient irrigation systems,
ensuring that interior drains are not connected to a storm sewer system, and appropriately
designed and constructed energy dissipation devices. These must be consistent with all
local post-construction storm water management requirements, policies, and guidelines.
The discharger must consider site-specific and seasonal conditions when designing the
control practices. Operation and maintenance of control practices after construction is
completed shall be addressed, including short-and long-term funding sources and the
responsible party.
11. Maintenance, Inspection, and Repair
The SWPPP shall include a discussion of the program to inspect and maintain all BMPs
as identified in the site plan or other narrative documents throughout the entire duration
of the project. A qualified person will be assigned the responsibility to conduct
inspections. The name and telephone number of that person shall be listed in the SWPPP
document. Inspections will be performed before and after storm events and once each
24-hour period during extended storm events to identify BMP effectiveness and
implement repairs or design changes as soon as feasible depending upon field conditions.
Equipment, materials, and workers must be available for rapid response to failures and
emergencies. All corrective maintenance to BMPs shall be performed as soon as possible
after the conclusion of each storm depending upon worker safety.
For each inspection required above, the discharger shall complete an inspection checklist.
At a minimum, an inspection checklist shall include:
a. Inspection date.
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b. Weather information: best estimate of beginning of storm event, duration of
event, time elapsed since last storm, and approximate amount of rainfall (inches).
c. A description of any inadequate BMPs.
d. If it is possible to safely access during inclement weather, list observations of all
BMPs: erosion controls, sediment controls, chemical and waste controls, and
non-storm water controls. Otherwise, list result of visual inspection at relevant
outfall, discharge point, or downstream location and projected required
maintenance activities.
e. Corrective actions required, including any changes to SWPPP necessary and
implementation dates.
f. Inspectors name, title, and signature.
The dischargers shall prepare their inspection checklists using the inspection checklist
form provided by the SWRCB or RWQCB or on forms that contain the equivalent
information.
12. Training
Individuals responsible for SWPPP preparation, implementation, and permit compliance
shall be appropriately trained, and the SWPPP shall document all training. This includes
those personnel responsible for installation, inspection, maintenance, and repair of BMPs.
Those responsible for overseeing, revising, and amending the SWPPP shall also
document their training. Training should be both formal and informal, occur on an
ongoing basis when it is appropriate and convenient, and should include
training/workshops offered by the SWRCB, RWQCB, or other locally recognized
agencies or professional organizations.
13. List of Contractors/Subcontractors
The SWPPP shall include a list of names of all contractors, (or subcontractors) and
individuals responsible for implementation of the SWPPP. This list should include
telephone numbers and addresses. Specific areas of responsibility of each subcontractor
and emergency contact numbers should also be included.
14. Other Plans
This SWPPP may incorporate by reference the appropriate elements of other plans
required by local, State, or Federal agencies. A copy of any requirements incorporated
by reference shall be kept at the construction site.
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15. Public Access
The SWPPP shall be provided, upon request, to the RWQCB. The SWPPP is considered
a report that shall be available to the public by the RWQCB under section 308(b) of the
Clean Water Act.
16. Preparer Certification
The SWPPP and each amendment shall be signed by the landowner (discharger) or his
representative and include the date of initial preparation and the date of each amendment.
SECTION B: MONITORING PROGRAM AND REPORTING REQUIREMENTS
1. Required Changes
The RWQCB may require the discharger to conduct additional site inspections, to submit
reports and certifications, or perform sampling and analysis.
2. Implementation
a. The requirements of this Section shall be implemented at the time of
commencement of construction activity (see also Section A. 2. Implementation
Schedule). The discharger is responsible for implementing these requirements
until construction activity is complete and the site is stabilized.
b. For ongoing construction activity involving a change in ownership of property
covered by this General Permit, the new owner must complete a NOI and
implement the requirements of this Section concurrent with the change of
ownership. For changes of information, the owner must follow instructions in
C. 7. Special Provisions for Construction Activity of the General Permit.
3. Site Inspections
Qualified personnel shall conduct inspections of the construction site prior to anticipated
storm events, during extended storm events, and after actual storm events to identify
areas contributing to a discharge of storm water associated with construction activity.
The name(s) and contact number(s) of the assigned inspection personnel shall be listed in
the SWPPP. Pre-storm inspections are to ensure that BMPs are properly installed and
maintained; post-storm inspections are to assure that the BMPs have functioned
adequately. During extended storm events, inspections shall be required each 24-hour
period. Best Management Practices (BMPs) shall be evaluated for adequacy and proper
implementation and whether additional BMPs are required in accordance with the terms
of the General Permit (see language in Section A. 11. Maintenance, Inspection, and
Repair). Implementation of nonstorm water discharge BMPs shall be verified and their
Page 20
effectiveness evaluated. One time discharges of non-storm water shall be inspected when
such discharges occur.
4. Compliance Certification
Each discharger or qualified assigned personnel listed by name and contact number in the
SWPPP must certify annually that construction activities are in compliance with the
requirements of this General Permit and the SWPPP. This Certification shall be based
upon the site inspections required in Item 3 of this Section. The certification must be
completed by July 1 of each year.
5. Noncompliance Reporting
Dischargers who cannot certify compliance, in accordance with Item 4 of this Section
and/or who have had other instances of noncompliance excluding exceedances of water
quality standards as defined in section B. 3. Receiving Water Limitations Language, shall
notify the appropriate RWQCB within 30 days. Corrective measures should be
implemented immediately following discovery that water quality standards were
exceeded. The notifications shall identify the noncompliance event, including an initial
assessment of any impact caused by the event; describe the actions necessary to achieve
compliance; and include a time schedule subject to the modifications by the RWQCB
indicating when compliance will be achieved. Noncompliance notifications must be
submitted within 30-calendar days of identification of noncompliance.
6. Monitoring Records
Records of all inspections, compliance certifications, and noncompliance reporting must
be retained for a period of at least three years from the date generated. With the
exception of noncompliance reporting, dischargers are not required to submit these
records.
7. Monitoring Program for Sedimentation/Siltation
Dischargers of storm water associated with construction activity that directly enters a
water body listed in Attachment 3 shall conduct a sampling and analysis program for the
pollutants (sedimentation/siltation or turbidity) causing the impairment. The discharger
shall monitor for the applicable parameter. If the water body is listed for sedimentation
or siltation, samples should be analyzed for Settleable Solids (ml/1) and Total Suspended
Solids (mg/1). Alternatively or in addition, samples may be analyzed for suspended
sediment concentration according to ASTM D3977-97. If the water body is listed for
turbidity, samples should be analyzed for turbidity (NTU). Discharges that flow through
tributaries that are not listed in Attachment 3 or that flow into Municipal Separate Storm
Sewer Systems (MS4) are not subject to these sampling and analysis requirements. The
sampling and analysis parameters and procedures must be designed to determine
whether the BMPs installed and maintained prevent discharges of sediment from
contributing to impairment in receiving waters.
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Samples shall be collected during the first two hours of discharge from rain events which
result in a direct discharge to any water body listed in Attachment 3. Samples shall be
collected during daylight hours (sunrise to sunset). Dischargers need not collect more
than four (4) samples per month. All samples shall be taken in the receiving waters and
shall be representative of the prevailing conditions of the water bodies. Samples shall be
collected from safely accessible locations upstream of the construction site discharge and
immediately downstream from the last point of discharge.
For laboratory analysis, all sampling, sample preservation, and analyses must be
conducted according to test procedures under 40 CFR Part 136. Field samples shall be
collected and analyzed according to the specifications of the manufacturer of the
sampling devices employed. Portable meters shall be calibrated according to
manufacturer's specification. All field and/or laboratory analytical data shall be kept in
the SWPPP document, which is to remain at the construction site at all times until a
Notice of Termination has been submitted and approved.
8. Monitoring Program for Pollutants Not Visually Detectable in Storm Water
A sampling and analysis program shall be developed and conducted for pollutants which
are not visually detectable in storm water discharges, which are or should be known to
occur on the construction site, and which could cause or contribute to an exceedance of
water quality objectives in the receiving water. Pollutants that should be considered for
inclusion in this sampling and analysis program are those identified in Sections A.5.b.
and A.S.c.
Construction materials and compounds that are not stored in water-tight containers under
a water-tight roof or inside a building are examples of materials for which the discharger
may have to implement sampling and analysis procedures. The goal of the sampling and
analysis is to determine whether the BMPs employed and maintained on site are effective
in preventing the potential pollutants from coming in contact with storm water and
causing or contributing to an exceedance of water quality objectives in the receiving
waters. Examples of construction sites that may require sampling and analysis include:
sites that are known to have contaminants spilled or spread on the ground; sites where
construction practices include the application of soil amendments, such as gypsum, which
can increase the pH of the runoff; or sites having uncovered stockpiles of material
exposed to storm water. Visual observations before, during, and after storm events may
trigger the requirement to collect samples. Any breach, malfunction, leakage, or spill
observed which could result in the discharge of pollutants to surface waters that would
not be visually detectable in storm water shall trigger the collection of a sample of
discharge. Samples shall be collected at all discharge locations which drain the areas
identified by the visual observations and which can be safely accessed. For sites where
sampling and analysis is required, personnel trained in water quality sampling procedures
shall collect storm water samples. A sufficiently large sample of storm water that has not
come in contact with the disturbed soil or the materials stored or used on-site
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(uncontaminated sample) shall be collected for comparison with the discharge sample.
Samples shall be collected during the first two hours of discharge from rain events that
occur during daylight hours and which generate runoff.
The uncontaminated sample shall be compared to the samples of discharge using field
analysis or through laboratory analysis. Analyses may include, but are not limited to,
indicator parameters such as: pH, specific conductance, dissolved oxygen, conductivity,
salinity, and TDS.
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. Portable meters shall be calibrated according to
manufacturer's specification. All field and/or analytical data shall be kept in the SWPPP
document, which is to remain at the construction site at all times until a Notice of
Termination has been submitted and approved.
SECTION C: STANDARD PROVISIONS FOR CONSTRUCTION ACTIVITY
1. Duty to Comply
The discharger must 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.
2. 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.
Page 23
3. 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.
4. 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.
5. 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 and with the
requirements of Storm Water Pollution Prevention Plans (SWPPP). 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.
6. 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.
7. Duty to Provide Information
The discharger shall furnish the RWQCB, State Water Resources Control Board, or
USEPA, within a reasonable time, any requested information to determine compliance
with this General Permit. The discharger shall also furnish, upon request, copies of
records required to be kept by this General Permit.
8. Inspection and Entry
The discharger shall allow the RWQCB, SWRCB, USEPA, 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:
Page 24
a. 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;
b. Access and copy at reasonable times any records that must be kept under the
conditions of this General Permit;
c. Inspect at reasonable times the complete construction site, including any off-site
staging areas or material storage areas, and the erosion/sediment controls; and
d. Sample or monitor at reasonable times for the purpose of ensuring General Permit
compliance.
9. Signatory Requirements
a. All Notice of Intents (NOIs), Notice of Terminations (NOTs), SWPPPs,
certifications, and reports prepared in accordance with this Order submitted to the
SWRCB shall be signed as follows:
(1) For a corporation: by 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 construction activity if authority to sign documents has
been assigned or delegated to the manager in accordance with corporate
procedures;
(2) For a partnership or sole proprietorship: by a general partner or the
proprietor, respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a
principal executive officer, ranking elected official, or duly authorized
representative. 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 Administrator of USEPA).
b. All SWPPPs, reports, certifications, or other information required by the General
Permit and/or requested by the RWQCB, SWRCB, USEPA, or the local storm
water management agency shall be signed by a person described above or by a
duly authorized representative. A person is a duly authorized representative if:
(1) The authorization is made in writing by a person described above and
retained as part of the SWPPP; or
Page 25
(2) The authorization specifies either an individual or a position having
responsibility for the overall operation of the construction activity, such as
the position of manager, operator, superintendent, or position of
equivalent responsibility, or an individual or position having overall
responsibility for environmental matters for the company. (A duly
authorized representative may thus be either a named individual or any
individual occupying a named position).
c. If an authorization is no longer accurate because a different individual or position
has responsibility for the overall operation of the construction activity, a new
authorization must be attached to the SWPPP prior to submittal of any reports,
information, or certifications to be signed by the authorized representative.
10. Certification
Any person signing documents under Section C, Provision 9 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."
11. Anticipated Noncompliance
The discharger will give advance notice to the RWQCB and local storm water
management agency of any planned changes in the construction activity which may result
in noncompliance with General Permit requirements.
12. 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.
Page 26
13. 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.
14. 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.
15. Reopener Clause
This General Permit may be modified, revoked and reissued, or terminated for cause due
to promulgation of amended regulations, receipt of USEPA 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.
16. Penalties for Violations of Permit Conditions
a. 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 $27,500
per calendar day of such violation, as well as any other appropriate sanction
provided by Section 309 of the CWA.
b. 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.
17. Availability
A copy of this General Permit shall be maintained at the construction site during
construction activity and be available to operating personnel.
18. Transfers
This General Permit is not transferable. A new owner of an ongoing construction activity
must submit a NOI in accordance with the requirements of this General Permit to be
authorized to discharge under this General Permit. An owner who sells property covered
Page 27
by this General Permit shall inform the new owner of the duty to file a NOI and shall
provide the new owner with a copy of this General Permit.
19. 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.
Page 28
Attachment 1
SWRCB AND RWQCB CONTACT LIST
Division of Water Quality
P.O. Box 1977
Sacramento, CA 95812-1977
(916) 341-5537 FAX: (916) 341-5543
Web Page: http://www.waterboards.ca.gov/stormwtr/index.html
Email: stormwater@waterboards.ca.gov
CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARDS
NORTH COAST REGION (1)
5550 Skylane Blvd, Ste. A
Santa Rose, CA 95403
(707) 576-2220 FAX: (707)523-0135
http://www.waterboards.ca.gov/rwqcbl
SAN FRANCISCO BAY REGION (2)
1515 Clay Street, Ste. 1400
Oakland, CA 94612
(510) 622-2300 FAX: (510) 622-2640
http://www.waterboards.ca.gov/nvqcb2
CENTRAL COAST REGION (3)
895 Aerovista Place, Ste 101
San Luis Obispo, CA 93401
(805) 549-3147 FAX: (805) 543-0397
http://www.waterboards.ca.gov/rwqcb3
LOS ANGELES REGION (4)
320 W. 4th Street, Ste. 200
Los Angeles, CA 90013
(213) 576-6600 FAX: (213) 576-6640
http://www.waterboards.ca.gov/rwqcb4
CENTRAL VALLEY REGION (5S)
11020 Sun Center Dr., #200
Rancho Cordova, CA 95670-6114
(916) 464-3291 FAX: (916) 464-4645
http:www.waterboards.ca.gov/rwqcb5
FRESNO BRANCH OFFICE (5F)
1685 E St.
Fresno, CA 93706
(559) 445-5116 FAX: (559) 445-5910
http://www.waterboards.ca.gov/rwqcb5
REDDING BRANCH OFFICE (5R)
415 Knollcrest Drive, Ste. 100
Redding, CA 96002
(530) 224-4845 FAX: (530) 224-4857
//www.waterboards.ca.gov/rwqcb5
LAHONTAN REGION (6 SLT)
2501 Lake Tahoe Blvd.
South Lake Tahoe, CA 96150
(530) 542-5400 FAX: (530) 544-2271
http://www.waterboards.ca.gov/rwqcb6
VICTORVILLE OFFICE (6V)
15428 Civic Drive, Ste. 100
Victorville, CA 92392-2383
(760) 241-6583 FAX: (760) 241-7308
http://www.waterboards.ca.gov/rwqcb6
COLORADO RIVER BASIN REGION
(7)
73-720 Fred Waring Dr., Ste. 100
Palm Desert, CA 92260
(760) 346-7491 FAX: (760) 341-6820
http://www.waterboards.ca.gov/rwqcb7
SANTA ANA REGION (8)
California Tower
3737 Main Street, Ste. 500
Riverside, CA 92501-3339
http://www.waterboards.ca.gov/rwqcb!.
SAN DIEGO REGION (9)
9174 Sky Park Court, Ste. 100
San Diego, CA 92123-4340
(858) 467-2952 FAX: (858) 571-6972
http://www.waterboards.ca.gov/rwqcb9
STATE OF CALIFORNIA
Arnold Schwarzenegger, Governor
CALIFORNIA ENVIRONMENTAL
PROTECTION AGENCY
Terry Tamminen, Secretary
STATE WATER RESOURCES
CONTROL BOARD
Arthur Baggett Jr., Chairman
Attachment 0
Water Pollution Control Cost Breakdown
Project Name:
Project Number:
Alga Norte Community Park
ITEM
EC-3
ECM
EC-5
EC-6
EC-7
EC-8
EC-9
EC-10
EC-11
EC-12
EC-13
SE-1
SE-2
SE-3
SE-4
SE-5
SE-6
SE-7
SE-8
SE-9
SE-10
WE-1
TC-1
TC-2
TC-3
ITEM DESCRIPTION
Hydraulic Mulch
Hydroseeding
Soil Binders
Straw Mulch
Gee-textiles & Mats
Wood Mulching
Earth Dikes & Drainage Swales
Velocity Dissipation Devices
Slope Drains
Streambank Protection
Polyacrylamide
Silt Fence
Sediment Basin
Sediment Trap
Check Dam
Fiber Rolls
Gravel Bag Berm
Street Sweeping and Vacuuming
Sandbag Barrier
Straw Bale Barrier
Storm Drain Inlet Protection
Wind Erosion Control
Stabilized Construction Entrance/Exit
Stabilized Construction Roadway
Entrance/Outlet Tire Wash
UNIT
FT2
FT2
FT2
FT2
FT2
FT2
FT
EA
EA
LS
LS
FT
EA
EA
EA
FT
FT
LS
FT
FT
EA
LS
EA
EA
EA
ESTIMATED
QUANTITY
32
10
100
4
1
VALUE
$800/AC
$850 DRAIN
ACRE
$20-$35/YD3
$20-$35/YD3
$100/HR
$200
LOW
$2400/
ENTRANCE
LOW
AMOUNT
$25,600
$8500
$3500
$3500
$800
$2400
Attachment O
Water Pollution Control Cost Breakdown
ITEM
NS-1
NS-2
NS-3
NS-4
NS-5
NS-6
NS-7
NS-8
NS-9
NS-10
NS-11
NS-1 2
NS-1 3
NS-1 4
NS-15
NS-1 6
WM-1
WM-2
WM-3
WM-4
WM-5
WM-6
WM-7
WM-8
WM-9
WM-10
ITEM DESCRIPTION
Water Conservation Practices
Dewatering Operations
Paving and Grinding Operations
Temporary Stream Crossing
Clear Water Diversion
Illicit Connection/ Discharge
Potable Water/Irrigation
Vehicle and Equipment Cleaning
Vehicle and Equipment Fueling
Vehicle and Equipment Maintenance
Pile Driving Operations
Concrete Curing
Material and Equipment Use Over Water
Concrete Finishing
Demolition Adjacent to Water
Temporary Batch Plants
Material Delivery and Storage
Material Use
Stockpile Management
Spill Prevention and Control
Solid Waste Management
Hazardous Waste Management
Contaminated Soil Management
Concrete Waste Management
Sanitary/Septic Waste Management
Liquid Waste Management
UNIT
LS
EA
LS
EA
EA
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
ESTIMATED
QUANTITY
3
TOTAL
VALUE
LOW
$360/MO
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
VARIES
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
AMOUNT
$1080
Attachment P
Notice of Termination
State Water Resources Control Board
Division of Water Quality
Linda S Adams I001 ' Street' Sacramento> California 95814 • (916) 341-5537 Arnold SchwarzeneggerLinaa s. Aaams Mailing Address: P.O. Box 1977 • Sacramento, California • 95812-1977 65
Secretary for FAX (916) 341.5543 . Internet Address: http://www.waterboards.ca.gov/stormwtr/index.htmlEnvironmental Protection
To: Storm Water Permit Holder
RE: NOTICE OF TERMINATION OF COVERAGE UNDER THE GENERAL
CONSTRUCTION STORM WATER PERMIT (GENERAL PERMIT)
In order for us to terminate your coverage under the General Permit, please complete and submit
the enclosed Notice of Termination (NOT) your local Regional Water Quality Control Board
(RWQCB). Refer to the last page of the NOT packet for RWQCB locations.
Submittal of a NOT does not guarantee termination and outstanding invoices are still valid. If
your NOT is denied, you will be required to continue complying with the requirements of the
General Permit and all outstanding invoice(s) are due. You will be notified of your NOT status
by the RWQCB or State Water Resources Control Board. Approval of your Notice of
Termination does not relieve you from paying any applicable outstanding invoices.
Should you have any questions regarding this matter, please contact your local RWQCB at the
number listed on the back page of the NOT package, or the Storm Water Unit at (916) 341-5537.
Sincerely,
Storm Water Unit
Division of Water Quality
Enclosure
SEND TO YOUR LOCAL RWQCB FOR APPROVAL
State of California
State Water Resources Control Board
NOTICE OF TERMINATION
OF COVERAGE UNDER THE NPDES GENERAL PERMIT NO. CAS000002
FOR DISCHARGES OF STORM WATER
ASSOCIATED WITH CONSTRUCTION ACTIVITY
Submission of this Notice of Termination constitutes notice that the owner (and his/her agent) of the site
identified on this form is no longer authorized to discharge storm water associated with construction
activity by NPDES General Permit No. CAS000002.
I. WDID NO.
II. OWNER
COMPANY NAME CONTACT PERSON
STREET ADDRESS TITLE
CITY STATE ZIP PHONE
III. CONSTRUCTION SITE INFORMATION
A. DEVELOPER NAME CONTACT PERSON
STREET ADDRESS TITLE
CITY CA ZIP PHONE
B. SITE ADDRESS COUNTY
CITY CA ZIP PHONE
IV. BASIS OF TERMINATION
1. The construction project is complete and the following conditions have been met.
- All elements of the Storm Water Pollution Prevention Plan have been completed.
- Construction materials and waste have been disposed of properly.
- The site is in compliance with all local storm water management requirements.
- A post-construction storm water operation and management plan is in place.
Date of project completion
2. Construction activities have been suspended, either temporarily or indefinitely
and the following conditions have been met.
- All elements of the Storm Water Pollution Prevention Plan have been completed.
- Construction materials and waste have been disposed of properly.
- All denuded areas and other areas of potential erosion are stabilized.
- An operation and maintenance plan for erosion and sediment control is in place.
- The site is in compliance with all local storm water management requirements.
Date of suspension Expected start up date
3. Site can not discharge storm water to waters of the United States (check one).
SEND TO YOUR LOCAL RWQCB FOR APPROVAL
. All storm water is retained on site.
. All storm water is discharged to evaporation or percolation ponds offsite.
4. Discharge of storm water from the site is now subject to another NPDES general permit or an
individual NPDES permit.
NPDES Permit No. Date coverage began
5. There is a new owner of the identified site. Date of owner transfer
Was the new owner notified of the General Permit requirements? YES NO
NEW OWNER INFORMATION
COMPANY NAME CONTACT PERSON
STREET ADDRESS TITLE
CITY STATE ZjP PHONE
V. EXPLANATION OF BASIS OF TERMINATION (Attach site photographs - see instructions).
VI. CERTIFICATION:
I certify under penalty of law that all storm water discharges associated with construction activity from the
identified site that are authorized by NPDES General Permit No. CAS000002 have been eliminated or
that I am no longer the owner of the site. I understand that by submitting this Notice of Termination, I am
no longer authorized to discharge storm water associated with construction activity under the general
permit, and that discharging pollutants in storm water associated with construction activity to waters of the
United States is unlawful under the Clean Water Act where the discharge is not authorized by a NPDES
permit. I also understand that the submittal of this Notice of Termination does not release an owner from
liability for any violations of the general permit or the Clean Water Act.
PRINTED NAME TITLE
SIGNATURE: DATE
REGIONAL WATER BOARD USE ONLY
This Notice of Termination has been reviewed, and I recommend termination of coverage under the
subject NPDES general permit.
Printed Name
Signature
Region No.
Date / /
NOT effective date:
Date: / /
State of California
State Water Resources Control Board
INSTRUCTIONS FOR COMPLETING
NOTICE OF TERMINATION
FOR CONSTRUCTION ACTIVITY
Who May File
Dischargers who are presently covered under NPDES General Permit No. CAS000002 for discharge of storm water
associated with construction activity may submit a Notice of Termination when they meet one of the following
criteria.
1. The construction project has been completed and the following conditions have been met: all elements of the
Stormwater Pollution Prevention Plan have been completed; construction materials and equipment maintenance
waste have been disposed of properly; the site is in compliance with all local storm water management
requirements including erosion/sediment control requirements and the appropriate use permits have been
obtained; and a post-construction storm water operation and management plan is in place.
2. Construction activities have been suspended, either temporarily or indefinitely and the following conditions
have been: all elements of the Stormwater Pollution Prevention Plan have been completed; construction
materials and equipment maintenance waste have been disposed of properly; all denuded areas and other areas
of potential erosion are stabilized; an operation and maintenance plan for erosion and sediment control is in
place; and the site is in compliance with all local storm water management requirements including
erosion/sediment control requirements.
The date construction activities were suspended, and the expected date construction activities will start up again
should be provided.
3. Construction site can not discharge storm water to waters of the United States. Please indicate if all storm
water is retained on site or if storm water is collected offsite.
4. Discharge of construction storm water from the site is now subject to another NPDES general permit or an
individual NPDES permit. The general permit or individual permit NPDES number and date coverage began
should be provided.
5. There is a new owner of the identified site. If ownership or operation of the facility has been transferred then
the previous owner must submit a Notice of Termination and the new owner must submit a Notice of Intent for
coverage under the general permit. The date of transfer and information on the new owner should be provided.
Note that the previous owner may be liable for discharge from the site until the new owner files a Notice of
Intent for coverage under the general permit.
Where to File
Submit the Notice of Termination to the Executive Officer of the Regional Water Quality Control Board responsible
for the area in which the facility is located. See attached. Submittal of a NOT does not guarantee termination and
outstanding invoices are still valid. If the Executive Officer, or his designated staff, agrees with the basis of
termination, the Notice of Termination will be transmitted to the State Water Board for processing at which time it
will be determined if any outstanding invoices are still valid. Approval of your Notice of Termination does not
relieve you from paying any applicable outstanding invoices. If the Executive Officer, or his designated staff, does
not agree with the basis of termination, the Notice of Termination will be returned. The Regional Water Board may
also inspect your site prior to accepting the basis of termination.
LINE-BY-LINE INSTRUCTIONS
All necessary information must be provided on the form. Type or print in the appropriate areas only.
Submit additional information, if necessary, on a separate sheet of paper.
SECTION I-WDID NO.
The WDID No. is a number assigned to each discharger covered under the General Permit. If you do not
know your WDID No., please call the State Water Board or Regional Water Board and request it prior to
submittal of the Notice of Termination.
SECTION II-OWNER
Enter the owner of the construction site's official or legal name (This should correspond with the name on
the Notice of Intent submitted for the site), address of the owner, contact person, and contact person's
title and telephone number.
SECTION HI-CONSTRUCTION SITE INFORMATION
In Part A, enter the name of the developer (or general contractor), address, contact person, and contact
person's title and telephone number. The contact person should be the construction site manager
completely familiar with the construction site and charged with compliance and oversight of the general
permit. This information should correspond with information on the Notice of Intent submitted for the site.
In Part B, enter the address, county, and telephone number (if any) of the construction site. Construction
sites that do not have a street address must attach a legal description of the site.
SECTION IV-BASIS OF TERMINATION
Check the category which best defines the basis of your termination request. See the discussion of the
criteria in the Who May File section of these instructions. Provide dates and other information requested.
Use the space under Explanation of Basis of Termination heading.
SECTION V-EXPLANATION OF BASIS OF TERMINATION
Please explain the basis or reasons why you believe your construction site is not required to comply with
the General Permit. To support your explanation, provide a site map and photograph of your site.
SECTION ^--CERTIFICATION
This section must be completed by the owner of the site.
The Notice of Termination must be signed by:
For a Corporation: a responsible corporate officer
For a Partnership or Sole Proprietorship: a general partner or the proprietor, respectively.
For a Municipality, State, or other Non-Federal Public Agency: either a principal executive officer or
ranking elected official.
For a Federal Agency: either the chief or senior executive officer of the agency.
Attachment Q
BMPs Selected for the Project
Scheduling EC-1
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
.._ Non-StormwaterNo
WM
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
S Secondary Objective
Description and Purpose
Scheduling is the development of a written plan that includes
sequencing of construction activities and the implementation of
BMPs such as erosion control and sediment control while
taking local climate (rainfall, wind, etc.) into consideration.
The purpose is to reduce the amount and duration of soil
exposed to erosion by wind, rain, runoff, and vehicle tracking,
and to perform the construction activities and control practices
in accordance with the planned schedule.
Suitable Applications
Proper sequencing of construction activities to reduce erosion
potential should be incorporated into the schedule of every
construction project especially during rainy season. Use of
other, more costly yet less effective, erosion and sediment
control BMPs may often be reduced through proper
construction sequencing.
Limitations
• Environmental constraints such as nesting season
prohibitions reduce the full capabilities of this BMP.
Implementation
• Avoid rainy periods. Schedule major grading operations
during dry months when practical. Allow enough time
before rainfall begins to stabilize the soil with vegetation or
physical means or to install sediment trapping devices.
• Plan the project and develop a schedule showing each phase of
construction. Clearly show how the rainy season relates to soil
Targeted Constituents
Sediment [
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
Potential Alternatives
None
CALTOR.M A :~rOR.V\VATD
January 2003 California Stormwater BMP Handbook
Construction
www.cabmphandbooks.com
lof 3
EC-1 Scheduling
disturbing and re-stabilization activities. Incorporate the construction schedule into the
SWPPP.
• Include on the schedule, details on the rainy season implementation and deployment of:
Erosion control BMPs
Sediment control BMPs
Tracking control BMPs
Wind erosion control BMPs
Non-stormwater BMPs
Waste management and materials pollution control BMPs
• Include dates for activities that may require non-stormwater discharges such as dewatering,
sawcutting, grinding, drilling, boring, crushing, blasting, painting, hydro-demolition, mortar
mixing, pavement cleaning, etc.
• Work out the sequencing and timetable for the start and completion of each item such as site
clearing and grubbing, grading, excavation, paving, foundation pouring utilities installation,
etc., to minimize the active construction area during the rainy season.
Sequence trenching activities so that most open portions are closed before new
trenching begins.
Incorporate staged seeding and re-vegetation of graded slopes as work progresses.
Schedule establishment of permanent vegetation during appropriate planting time for
specified vegetation.
• Non-active areas should be stabilized as soon as practical after the cessation of soil
disturbing activities or one day prior to the onset of precipitation.
• Monitor the weather forecast for rainfall.
• When rainfall is predicted, adjust the construction schedule to allow the implementation of
soil stabilization and sediment treatment controls on all disturbed areas prior to the onset of
rain.
• Be prepared year round to deploy erosion control and sediment control BMPs. Erosion may
be caused during dry seasons by un-seasonal rainfall, wind, and vehicle tracking. Keep the
site stabilized year round, and retain and maintain rainy season sediment trapping devices
in operational condition.
• Apply permanent erosion control to areas deemed substantially complete during the
project's defined seeding window.
Costs
Construction scheduling to reduce erosion may increase other construction costs due to reduced
economies of scale in performing site grading. The cost effectiveness of scheduling techniques
should be compared with the other less effective erosion and sedimentation controls to achieve a
cost effective balance.
2 of 3 California Stormwater BMP Handbook January 2003
Construction
www .ca bmpha ndbooks.com
Scheduling EC-1
Inspection and Maintenance
• Verify that work is progressing in accordance with the schedule. If progress deviates, take
corrective actions.
• Amend the schedule when changes are warranted.
• Amend the schedule prior to the rainy season to show updated information on the
deployment and implementation of construction site BMPs.
References
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-^92-005), U.S. Environmental Protection Agency, Office
of Water, September 1992.
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Preservation Of Existing Vegetation EC-2
Description and Purpose
Carefully planned preservation of existing vegetation minimizes
the potential of removing or injuring existing trees, vines,
shrubs, and grasses that protect soil from erosion.
Suitable Applications
Preservation of existing vegetation is suitable for use on most
projects. Large project sites often provide the greatest
opportunity for use of this BMP. Suitable applications include
the following:
• Areas within the site where no construction activity occurs,
or occurs at a later date. This BMP is especially suitable to
mufti year projects where grading can be phased.
• Areas where natural vegetation exists and is designated for
preservation. Such areas often include steep slopes,
watercourse, and building sites in wooded areas.
• Areas where local, state, and federal government require
preservation, such as vernal pools, wetlands, marshes,
certain oak trees, etc. These areas are usually designated on
the plans, or in the specifications, permits, or
environmental documents.
• Where vegetation designated for ultimate removal can be
temporarily preserved and be utilized for erosion control and
sediment control.
Objectives
EC
SE
TR
WE
NS
WM
Erosion Control 0
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
ID Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
El
Potential Alternatives
None
CALJTORMASrOKMWATO
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EC-2 Preservation Of Existing Vegetation
Limitations
• Requires forward planning by the owner/developer, contractor, and design staff.
• Limited opportunities for use when project plans do not incorporate existing vegetation into
the site design.
• For sites with diverse topography, it is often difficult and expensive to save existing trees
while grading the site satisfactory for the planned development.
Implementation
The best way to prevent erosion is to not disturb the land. In order to reduce the impacts of new
development and redevelopment, projects may be designed to avoid disturbing land in sensitive
areas of the site (e.g., natural watercourses, steep slopes), and to incorporate unique or desirable
existing vegetation into the site's landscaping plan. Clearly marking and leaving a buffer area
around these unique areas during construction will help to preserve these areas as well as take
advantage of natural erosion prevention and sediment trapping.
Existing vegetation to be preserved on the site must be protected from mechanical and other
injury while the land is being developed. The purpose of protecting existing vegetation is to
ensure the survival of desirable vegetation for shade, beautification, and erosion control.
Mature vegetation has extensive root systems that help to hold soil in place, thus reducing
erosion. In addition, vegetation helps keep soil from drying rapidly and becoming susceptible to
erosion. To effectively save existing vegetation, no disturbances of any kind should be allowed
within a defined area around the vegetation. For trees, no construction activity should occur
within the drip line of the tree.
Timing
m Provide for preservation of existing vegetation prior to the commencement of clearing and
grubbing operations or other soil disturbing activities in areas where no construction activity
is planned or will occur at a kter date.
Design and Layout
m Mark areas to be preserved with temporary fencing. Include sufficient setback to protect
roots.
- Orange colored plastic mesh fencing works well.
- Use appropriate fence posts and adequate post spacing and depth to completely support
the fence in an upright position.
• Locate temporary roadways, stockpiles, and layout areas to avoid stands of trees, shrubs,
and grass.
• Consider the impact of grade changes to existing vegetation and the root zone.
• Maintain existing irrigation systems where feasible. Temporary irrigation may be required.
• Instruct employees and subcontractors to honor protective devices. Prohibit heavy
equipment, vehicular traffic, or storage of construction materials within the protected area.
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Preservation Of Existing Vegetation EC-2
Costs
There is little cost associated with preserving existing vegetation if properly planned during the
project design, and these costs may be offset by aesthetic benefits that enhance property values.
During construction, the cost for preserving existing vegetation will likely be less than the cost of
applying erosion and sediment controls to the disturbed area. Replacing vegetation
inadvertently destroyed during construction can be extremely expensive, sometimes in excess of
$10,000 per tree.
Inspection and Maintenance
During construction, the limits of disturbance should remain clearly marked at all times.
Irrigation or maintenance of existing vegetation should be described in the landscaping plan. If
damage to protected trees still occurs, maintenance guidelines described below should be
followed:
• Verify that protective measures remain in place. Restore damaged protection measures
immediately.
• Serious tree injuries shall be attended to by an arborist.
• Damage to the crown, trunk, or root system of a retained tree shall be repaired immediately.
• Trench as far from tree trunks as possible, usually outside of the tree drip line or canopy.
Curve trenches around trees to avoid large roots or root concentrations. If roots are
encountered, consider tunneling under them. When trenching or tunneling near or under
trees to be retained, place tunnels at least 18 in. below the ground surface, and not below the
tree center to minimize impact on the roots.
• Do not leave tree roots exposed to air. Cover exposed roots with soil as soon as possible. If
soil covering is not practical, protect exposed roots with wet burlap or peat moss until the
tunnel or trench is ready for backfill.
• Cleanly remove the ends of damaged roots with a smooth cut.
• Fill trenches and tunnels as soon as possible. Careful filling and tamping will eliminate air
spaces in the soil, which can damage roots.
• If bark damage occurs, cut back all loosened bark into the undamaged area, with the cut
tapered at the top and bottom and drainage provided at the base of the wood. Limit cutting
the undamaged area as much as possible.
• Aerate soil that has been compacted over a trees root zone by punching holes 12 in. deep
with an iron bar, and moving the bar back and forth until the soil is loosened. Place holes 18
in. apart throughout the area of compacted soil under the tree crown.
• Fertilization
- Fertilize stressed or damaged broadleaf trees to aid recovery.
- Fertilize trees in the late fall or early spring.
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EC-2 Preservation Of Existing Vegetation
Apply fertilizer to the soil over the feeder roots and in accordance with label instructions,
but never closer than 3 ft to the trunk. Increase the fertilized area by one-fourth of the
crown area for conifers that have extended root systems.
• Retain protective measures until all other construction activity is complete to avoid damage
during site cleanup and stabilization.
References
County of Sacramento Tree Preservation Ordinance, September 1981.
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.
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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Hydroseeding EC-4
Description and Purpose
Hydro seeding typically consists of apply ing a mixture of wood
fiber, seed, fertilizer, and stabilizing emulsion with hydro-
mulch equipment, to temporarily protect exposed soils from
erosion by water and wind.
Suitable Applications
Hydroseeding is suitable for soil disturbed areas requiring
temporary protection until permanent stabilization is
established, and disturbed areas that will be re-disturbed
following an extended period of inactivity.
Limitations
• Hydroseeding may be used alone only when there is
sufficient time in the season to ensure adequate vegetation
establishment and coverage to provide adequate erosion
control. Otherwise, hydroseeding must be used in
conjunction with mulching (i.e., straw mulch).
• Steep slopes are difficult to protect with temporary seeding.
• Temporary seeding may not be appropriate in dry periods
without supplemental irrigation.
• Temporary vegetation may have to be removed before
permanent vegetation is applied.
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
Non-Stormwater
El
NS Management Control
.,... Waste Management and
WM Materials Pollution Control
Legend:
EJ Primary Objective
S Secondary Objective
Targeted Constituents
Sediment I
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organics
Potential Alternatives
EC-3 Hydraulic Mulch
EC-5 Soil Binders
EC-6 Straw Mulch
EC-7 GeotextSes and Mats
EC-8 Wood Mulching
Temporary vegetation is not appropriate for short term inactivity.
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EC-4 Hydroseeding
Implementation
In order to select appropriate hydroseeding mixtures, an evaluation of site conditions shall be
performed with respect to:
Soil conditions - Maintenance requirements
Site topography - Sensitive adjacent areas
Season and climate - Water availability
- Vegetation types - Plans for permanent vegetation
The local office of the U.S.D. A. Natural Resources Conservation Service (NRCS) is an excellent
source of information on appropriate seed mixes.
The following steps shall be followed for implementation:
• Avoid use of hydroseeding in areas where the BMP would be incompatible with future
earthwork activities and would have to be removed.
• Hydroseeding can be accomplished using a multiple step or one step process. The multiple
step process ensures maximum direct contact of the seeds to soil. When the one step
process is used to apply the mixture of fiber, seed, etc., the seed rate shall be increased to
compensate for all seeds not having direct contact with the soil.
• Prior to application, roughen the area to be seeded with the furrows trending along the
contours.
• Apply a straw mulch to keep seeds in place and to moderate soil moisture and temperature
until the seeds germinate and grow.
• All seeds shall be in conformance with the California State Seed Law of the Department of
Agriculture. Each seed bag shall be delivered to the site sealed and clearly marked as to
species, purity, percent germination, dealer's guarantee, and dates of test. The container
shall be labeled to clearly reflect the amount of Pure Live Seed (PLS) contained. All legume
seed shall be pellet inoculated. Inoculant sources shall be species specific and shall be
applied at a rate of 2 Ib of inoculant per 100 Ib seed.
• Commercial fertilizer shall conform to the requirements of the California Food and
Agricultural Code. Fertilizer shall be pelleted or granular form.
• Follow up applications shall be made as needed to cover weak spots and to maintain
adequate soil protection.
• Avoid over spray onto roads, sidewalks, drainage channels, existing vegetation, etc.
Costs
Average cost for installation and maintenance may vary from as low as $300 per acre for flat
slopes and stable soils, to $1600 per acre for moderate to steep slopes and/or erosive soils.
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Hydroseeding EC-4
Hydroseeding
High Density
Fast Growing
Non -Competing
Sterile
Ornamentals
Turf Species
Bunch Grasses
Annual
Perennial
Native
Non-Native
Cereal Grain
Installed
Cost per Acre
$400 - $1600
$350
$300 - $1300
$350 - $650
$300 - $800
$300 - $1600
$400 - $500
$500
Source: Caltrans Guidance for Soil Stabilization for Temporary Slopes, Nov. 1999
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.
• Areas where erosion is evident shall be repaired and BMPs re-applied as soon as possible.
Care should be exercised to minimize the damage to protected areas while making repairs, as
any area damaged will require re-application of BMPs.
• Where seeds fail to germinate, or they germinate and die, the area must be re-seeded,
fertilized, and mulched within the planting season, using not less than half the original
application rates.
• Irrigation systems, if applicable, should be inspected daily while in use to identify system
malfunctions and line breaks. When line breaks are detected, the system must be shut down
immediately and breaks repaired before the system is put back into operation.
• Irrigation systems shall be inspected for complete coverage and adjusted as needed to
maintain complete coverage.
References
Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of
Transportation (Caltrans), November 1999.
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Geotextiles and Mats EC-7
Description and Purpose
Mattings of natural materials are used to cover the soil surface
to reduce erosion from rainfall impact, hold soil in place, and
absorb and hold moisture near the soil surface. Additionally,
matting may be used to stabilize soils until vegetation is
established.
Suitable Applications
Mattings are commonly applied on short, steep slopes where
erosion hazard is high and vegetation will be slow to establish.
Mattings are also used on stream banks where moving water at
velocities between 3 ft/s and 6 ft/s are likely to wash out new
vegetation, and in areas where the soil surface is disturbed and
where existing vegetation has been removed. Matting may also
be used when seeding cannot occur (e.g., late season
construction and/or the arrival of an early rain season).
Erosion control matting should be considered when the soils
are fine grained and potentially erosive. These measures
should be considered in the following situations.
• Steep slopes, generally steeper than 3:1 (H:V)
• Slopes where the erosion potential is high
• Slopes and disturbed soils where mulch must be anchored
• Disturbed areas where plants are slow to develop
• Channels with flows exceeding 3.3 ft/s
Objectives
EC
SE
TR
WE
NS
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
0
3
..... Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
H Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
0
Potential Alternatives
EC-3 Hydraulic Mulch
EC-4 Hydroseeding
EC-5 Soil Binders
EC-6 Straw Mulch
EC-8 Wood Mulching
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EC-7 Geotextiles and Mats
Channels to be vegetated
• Stockpiles
• Slopes adjacent to water bodies of Environmentally Sensitive Areas (ESAs)
Limitations
• Properly installed mattings provide excellent erosion control but do so at relatively high cost.
This high cost typically limits the use of mattings to areas of concentrated channel flow and
steep slopes.
• Mattings are more costly than other BMP practices, limiting their use to areas where other
BMPs are ineffective (e.g. channels, steep slopes).
• Installation is critical and requires experienced contractors. The contractor should install
the matting material in such a manner that continuous contact between the material and the
soil occurs.
• Geotextiles and Mats may delay seed germination, due to reduction in soil temperature.
• Blankets and mats are generally not suitable for excessively rocky sites or areas where the
final vegetation will be mowed (since staples and netting can catch in mowers).
• Blankets and mats must be removed and disposed of prior to application of permanent soil
stabilization measures.
• Plastic sheeting is easily vandalized, easily torn, photodegradable, and must be disposed of
at a landfill.
• Plastic results in 100% runoff, which may cause serious erosion problems in the areas
receiving the increased flow.
• The use of plastic should be limited to covering stockpiles or very small graded areas for
short periods of time (such as through one imminent storm event) until alternative
measures, such as seeding and mulching, may be installed.
• Geotextiles, mats, plastic covers, and erosion control covers have maximum flow rate
limitations; consult the manufacturer for proper selection.
• Not suitable for areas that have heavy foot traffic (tripping hazard) - e.g., pad areas around
buildings under construction.
Implementation
Material Selection
Organic matting materials have been found to be effective where re-vegetation will be provided
by re-seeding. The choice of matting should be based on the size of area, side slopes, surface
conditions such as hardness, moisture, weed growth, and availability of materials.
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Geotextiles and Mats EC-7
The following natural and synthetic mattings are commonly used:
Geotextiles
m Material should be a woven polypropylene fabric with minimum thickness of 0.06 in.,
minimum width of 12 ft and should have minimum tensile strength of 150 Ibs (warp), 80 Ibs
(fill) in conformance with the requirements in ASTM Designation: D 4632. The permittivity
of the fabric should be approximately 0.07 sec-1 in conformance with the requirements in
ASTM Designation: 04491. The fabric should have an ultraviolet (UV) stability of 70
percent in conformance with the requirements in ASTM designation: 04355. Geotextile
blankets must be secured in place with wire staples or sandbags and by keying into tops of
slopes to prevent infiltration of surface waters under geotextile. Staples should be made of
minimum 11 gauge steel wire and should be U-shaped with 8 in. legs and 2 in. crown.
• Geotextiles may be reused if they are suitable for the use intended.
Plastic Covers
m Plastic sheeting should have a minimum thickness of 6 mils, and must be keyed in at the top
of slope and firmly held in place with sandbags or other weights placed no more than 10 ft
apart. Seams are typically taped or weighted down their entire length, and there should be
at least a 12 in. to 24 in. overlap of all seams. Edges should be embedded airiinimum of 6 in.
in soil.
• All sheeting must be inspected periodically after installation and after significant rainstorms
to check for erosion, undermining, and anchorage failure. Any failures must be repaired
immediately. If washout or breakages occur, the material should be re-installed after
repairing the damage to the slope.
Erosion Control Blankets/Mats
m Biodegradable rolled erosion control products (RECPs) are typically composed of jute fibers,
curled wood fibers, straw, coconut fiber, or a combination of these materials. In order for an
RECP to be considered 100% biodegradable, the netting, sewing or adhesive system that
holds the biodegradable mulch fibers together must also be biodegradable.
Jute is a natural fiber that is made into a yarn that is loosely woven into a biodegradable
mesh. It is designed to be used in conjunction with vegetation and has longevity of
approximately one year. The material is supplied in rolled strips, which should be
secured to the soil with U-shaped staples or stakes in accordance with manufacturers'
recommendations.
Excelsior (curled wood fiber) blanket material should consist of machine produced
mats of curled wood excelsior with 80 percent of the fiber 6 in. or longer. The excelsior
blanket should be of consistent thickness. The wood fiber must be evenly distributed
over the entire area of the blanket. The top surface of the blanket should be covered with
a photodegradable extruded plastic mesh. The blanket should be smolder resistant
without the use of chemical additives and should be non-toxic and non-injurious to plant
and animal life. Excelsior blankets should be furnished in rolled strips, a minimum of 48
in. wide, and should have an average weight of 0.8 lb/yd2, +10 percent, at the time of
manufacture. Excelsior blankets must be secured in place with wire staples. Staples
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Geotextiles and Mats EC-7
Plastic netting is a lightweight biaxially oriented netting designed for securing loose
mulches like straw or paper to soil surfaces to establish vegetation. The netting is
photodegradable. The netting is supplied in rolled strips, which must be secured with U--
shaped staples or stakes in accordance with manufacturers' recommendations.
Plastic mesh is an open weave geotextile that is composed of an extruded synthetic
fiber woven into a mesh with an opening size of less than */4 in. It is used with re-
vegetation or may be used to secure loose fiber such as straw to the ground. The material
is supplied in rolled strips, which must be secured to the soil with U-shaped staples or
stakes in accordance with manufacturers' recommendations.
Synthetic fiber with netting is a mat that is composed of durable synthetic fibers
treated to resist chemicals and ultraviolet light. The mat is a dense, three dimensional
mesh of synthetic (typically polyolefin) fibers stitched between two polypropylene nets.
The mats are designed to be re-vegetated and provide a permanent composite system of
soil, roots, and geomatrix. The material is furnished in rolled strips, which must be
secured with U-shaped staples or stakes in accordance with manufacturers'
recommendations.
Bonded synthetic fibers consist of a three dimensional geomatrix nylon (or other
synthetic) matting. Typically it has more than 90 percent open area, which facilitates
root growth. It's tough root reinforcing system anchors vegetation and protects against
hydraulic lift and shear forces created by high volume discharges. It can be installed
over prepared soil, followed by seeding into the mat. Once vegetated, it becomes an
invisible composite system of soil, roots, and geomatrix. The material is furnished in
rolled strips that must be secured with U-shaped staples or stakes in accordance with
manufacturers' recommendations.
Combination synthetic and biodegradable RECPs consist of biodegradable fibers,
such as wood fiber or coconut fiber, with a heavy polypropylene net stitched to the top
and a high strength continuous filament geomatrix or net stitched to the bottom. The
material is designed to enhance re-vegetation. The material is furnished in rolled strips,
which must be secured with U-shaped staples or stakes in accordance with
manufacturers' recommendations.
Site Preparation
m Proper site preparation is essential to ensure complete contact of the blanket or matting with
the soil.
• Grade and shape the area of installation.
• Remove all rocks, clods, vegetation or other obstructions so that the installed blankets or
mats will have complete, direct contact with the soil.
• Prepare seedbed by loosening 2 to 3 in. of topsoil.
Seeding
Seed the area before blanket installation for erosion control and revegetation. Seeding after mat
installation is often specified for turf reinforcement application. When seeding prior to blanket
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EC-7 Geotextiles and Mats
instalktion, all check slots and other areas disturbed during installation must be re-seeded.
Where soil filling is specified, seed the matting and the entire disturbed area after instalktion
and prior to filling the mat with soil
Fertilize and seed in accordance with seeding specifications or other types of landscaping plans.
When using jute matting on a seeded area, apply approximately half the seed before laying the
mat and the remainder after kying the mat. The protective matting can be laid over areas where
grass has been planted and the seedlings have emerged. Where vines or other ground covers are
to be planted, lay the protective matting first and then pknt through matting according to
design of pknting.
Check Slots
Check slots are made of glass fiber strips, excelsior matting strips or tight folded jute matting
bknket or strips for use on steep, highly erodible watercourses. The check slots are pkced in
narrow trenches 6 to 12 in. deep across the channel and left flush with the soil surface. They are
to cover the full cross section of designed flow.
Laying and Securing Matting
m Before laying the matting, all check slots should be installed and the friable seedbed made
free from clods, rocks, and roots. The surface should be compacted and finished according
to the requirements of the manufacturer's recommendations.
• Mechanical or manual lay down equipment should be capable of handling full rolls of fabric
and laying the fabric smoothly without wrinkles or folds. The equipment should meet the
fabric manufacturer's recommendations or equivalent standards.
Anchoring
m U-shaped wire staples, metal geotextile stake pins, or triangular wooden stakes can be used
to anchor mats and bknkets to the ground surface.
• Wire staples should be made of minimum 11 gauge steel wire and should be U-shaped with 8
in. legs and 2 in. crown.
• Metal stake pins should be 0.188 in. diameter steel with a 1.5 in. steel washer at the head of
the pin, and 8 in. in length.
• Wire staples and metal stakes should be driven flush to the soil surface.
Installation on Slopes
Installation should be in accordance with the manufacturer's recommendations. In general,
these will be as follows:
• Begin at the top of the slope and anchor the blanket in a 6 in. deep by 6 in. wide trench.
Backfill trench and tamp earth firmly.
• Unroll blanket down slope in the direction of water flow.
• Overlap the edges of adjacent parallel rolls 2 to 3 in. and staple every 3 ft.
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Geotextiles and Mats EC-7
• When blankets must be spliced, place blankets end over end (shingle style) with 6 in.
overlap. Staple through overlapped area, approximately 12 in. apart.
• Lay blankets loosely and maintain direct contact with the soil. Do not stretch.
• Staple blankets sufficiently to anchor blanket and maintain contact with the soil. Staples
should be placed down the center and staggered with the staples placed along the edges.
Steep slopes, 1:1 (H:V) to 2:1 (H:V), require a minimum of 2 staples/yd2. Moderate slopes,
2:1 (H:V)to 3:1 (H:V), require a minimum of l Vz staples/yd2.
Installation m Channels
Installation should be in accordance with the manufacturer's recommendations. In general,
these will be as follows:
• Dig initial anchor trench 12 in. deep and 6 in. wide across the channel at the lower end of the
project area.
• Excavate intermittent check slots, 6 in. deep and 6 in. wide across the channel at 25 to 30 ft
intervals along the channels.
• Cut longitudinal channel anchor trenches 4 in. deep and 4 in. wide along each side of the
installation to bury edges of matting, whenever possible extend matting 2 to 3 in. above the
crest of the channel side slopes.
• Beginning at the downstream end and in the center of the channel, place the initial end of
the first roll in the anchor trench and secure with fastening devices at 12 in. intervals. Note:
matting will initially be upside down in anchor trench.
• In the same manner, position adjacent rolls in anchor trench, overlapping the preceding roll
a minimum of 3 in.
• Secure these initial ends of mats with anchors at 12 in. intervals, backfill and compact soil.
• Unroll center strip of matting upstream. Stop at next check slot or terminal anchor trench.
Unroll adjacent mats upstream in similar fashion, maintaining a 3 in. overlap.
• Fold and secure all rolls of matting snugly into all transverse check slots. Lay mat in the
bottom of the slot then fold back against itself. Anchor through both layers of mat at 12 in.
intervals, then backfill and compact soil. Continue rolling all mat widths upstream to the
next check slot or terminal anchor trench.
• Alternate method for non-critical installations: Place two rows of anchors on 6 in. centers at
25 to 30 ft. intervals in lieu of excavated check slots.
• Staple shingled lap spliced ends a minimum of 12 in. apart on 12 in. intervals.
• Place edges of outside mats in previously excavated longitudinal slots; anchor using
prescribed staple pattern, backfill, and compact soil.
• Anchor, fill, and compact upstream end of mat in a 12 in. by 6 in. terminal trench.
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EC-7 Geotextiles and Mats
• Secure mat to ground surface using U-shaped wire staples, geotextile pins, or wooden stakes.
• Seed and fill turf reinforcement matting with soil, if specified.
Soil Filling (\fspecified for twfreinforcement)
• Always consult the manufacturer's recommendations for installation.
• Do not drive tracked or heavy equipment over mat.
• Avoid any traffic over matting if loose or wet soil conditions exist.
• Use shovels, rakes, or brooms for fine grading and touch up.
• Smooth out soil filling just exposing top netting of mat.
Temporary Soil Stabilization Removal
• Temporary soil stabilization removed from the site of the work must be disposed of if
necessary.
Costs
Relatively high compared to other BMPs. Biodegradable materials: $0.50 - $o.57/yd2.
Permanent materials: $3.00 - $4-5O/yd2. Staples: $0.04-$o.O5/staple. Approximate costs for
installed materials are shown below:
Rolled Erosion Control Products
Biodegradable
Non-Biodegradable
Jute Mesh
Curled Wood Fiber
Straw
Wood Fiber
Coconut Fiber
Coconut Fiber Mesh
Straw Coconut Fiber
Plastic Netting
Plastic Mesh
Synthetic Fiber with Netting
Bonded Synthetic Fibers
Combination with Biodegradable
Installed
Cost per Acre
$6,500
$10,500
$8,900
$8,900
$13,000
$31,200
$10,900
$2,000
$3,200
$34,800
$50,000
$32,000
Source: Caltrans Guidance for Soil Stabilization for Temporary Slopes, Nov. 1999
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, and
at two-week intervals during the non-rainy season.
• Inspect BMPs subject to non-stormwater discharges daily while non-stormwater discharges
occur.
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Geotextiles and Mats EC-7
• Areas where erosion is evident shall be repaired and BMPs reapplied as soon as possible.
Care should be exercised to minimize the damage to protected areas while making repairs, as
any area damaged will require reapplication of BMPs.
• If washout or breakage occurs, re-install the material after repairing the damage to the slope
or channel.
• Make sure matting is uniformly in contact with the soil.
• Check that all the lap joints are secure.
• Check that staples are flush with the ground.
• Check that disturbed areas are seeded.
References
Guides for Erosion and Sediment Controls in California, USDA Soils Conservation Service,
January 1991.
National Management Measures to Control Nonpoint Source Pollution from Urban Areas,
United States Environmental Protection Agency, 2002..
Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caltrans), November 2000.
Guidance Document: Soil Stabilization for Temporary Slopes, State of California Department of
Transportation (Caltrans), November 1999
Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75,
Washington State Department of Ecology, February 1992.
Water Quality Management Plan for The Lake Tahoe Region, Volume II, Handbook of
Management Practices, Tahoe Regional Planning Agency, November 1988.
January 2003 California Stormwater BMP Handbook 9 of 11
Construction
www.cabmphandbooks.com
EC-7 Geotextiles and Mats
•6" X 6"anchor trench
Mats/blankets should
be installed verticallydownslope.
ISOMETRIC VIEW
TYPICAL SLOPE
SOIL STABILIZATION
NTS
NOTES:
^N on—woven
geotextile filter
fabric under
typical treatment.
WET SLOPE LINING
NTS
1. Slope surface shall be free of rocks, clods, sticks
ana grass, Mats/blankets shall have good soil contact.
2. Lay blankets loosely and stake or staple to maintain
direct contact with the soil. Do not stretch.
3. Install per manufacturer's recommendations
TYPICAL INSTALLATION DETAIL
10 Of 11 California Stormwater BMP Handbook
Construction
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January 2003
Geotextiles and Mats EC-7
INITIAL CHANNEL ANCHOR TRENCH
NTS
Stake at 3' to
5" intervals
TERMINAL SLOPE AND CHANNEL
ANCHOR TRENCH
NTS
Check slot at 25'-30' intervals
ISOMETRIC VIEW
NTS
r4" X 4"
anchor shoe
4-
LONGITUDINAL ANCHOR TRENCH
NTS
INTERMITTENT CHECK SLOT
NTS
NOTE:S:
1. Check slots to be constructed per manufacturers specifications.
2. Staking or stapling layout per manufacturers specifications.
3. Install per manufacturer's recommendations
TYPICAL INSTALLATION DETAIL
January 2003 California Stormwater BMP Handbook
Construction
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11 of 11
Velocity Dissipation Devices EC-10
Description and Purpose
Outlet protection is a physical device composed of rock, grouted
riprap, or concrete rubble, which is placed at the outlet of a pipe
or channel to prevent scour of the soil caused by concentrated,
high velocity flows.
Suitable Applications
Whenever discharge velocities and energies at the outlets of
culverts, conduits, or channels are sufficient to erode the next
downstream reach. This includes temporary diversion
structures to divert runon during construction.
• These devices may be used at the following locations:
Outlets of pipes, drains, culverts, slope drains, diversion
ditches, swales, conduits, or channels.
Outlets located at the bottom of mild to steep slopes.
Discharge outlets that carry continuous flows of water.
Outlets subject to short, intense flows of water, such as
flash floods.
Points where lined conveyances discharge to unlined
conveyances
Limitations
• Large storms or high flows can wash away the rock outlet
protection and leave the area susceptible to erosion.
Objectives
EC
SE
TR
WE
NS
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
..... Waste Management and
wm Materials Pollution Control
Legend:
0 Primary Objective
IH Secondary Objective
Targeted Constituents
Sediment [
Nutrients
Trash
Metals
Bacteria
01 and Grease
Organics
Potential Alternatives
None
CALM-KMA TJR.MV/:tlI >
January 2003 California Stormwater BMP Handbook
Construction
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lof 4
EC-10 Velocity Dissipation Devices
• Sediment captured by the rock outlet protection may be difficult to remove without
removing the rock.
• Outlet protection may negatively impact the channel habitat.
• Grouted riprap may break up in areas of freeze and thaw.
• If there is not adequate drainage, and water builds up behind grouted riprap, it may cause
the grouted riprap to break up due to the resulting hydrostatic pressure.
Implementation
General
Outlet protection is needed where discharge velocities and energies at the outlets of culverts,
conduits or channels are sufficient to erode the immediate downstream reach. This practice
protects the outlet from developing small eroded pools (plange pools), and protects against gully
erosion resulting from scouring at a culvert mouth.
Design and Layout
As with most channel design projects, depth of flow, roughness, gradient, side slopes, discharge
rate, and velocity should be considered in the outlet design. Compliance to local and state
regulations should also be considered while working in environmentally sensitive streambeds.
General recommendations for rock size and length of outlet protection mat are shown in the
rock outlet protection figure in this BMP and should be considered minimums. The apron
length and rock size gradation are determined using a combination of the discharge pipe
diameter and estimate discharge rate: Select the longest apron length and largest rock size
suggested by the pipe size and discharge rate. Where flows are conveyed in open channels such
as ditches and swales, use the estimated discharge rate for selecting the apron length and rock
size. Flows should be same as the culvert or channel design flow but never the less than the
peak 5 year flow for temporary structures planned for one rainy season, or the 10 year peak flow
for temporary structures planned for two or three rainy seasons.
• There are many types of energy dissipaters, with rock being the one that is represented in
the attached figure.
• Best results are obtained when sound, durable, and angular rock is used.
• Install riprap, grouted riprap, or concrete apron at selected outlet. Riprap aprons are best
suited for temporary use during construction. Grouted or wired tied rock riprap can
minimize maintenance requirements.
• Rock outlet protection is usually less expensive and easier to install than concrete aprons or
energy dissipaters. It also serves to trap sediment and reduce flow velocities.
• Carefully place riprap to avoid damaging the filter fabric.
Stone 4 in. to 6 in. may be carefully dumped onto filter fabric from a height not to exceed
12 in.
Stone 8 in. to 12 in. must be hand placed onto filter fabric, or the filter fabric may be
covered with 4 in. of gravel and the 8 in. to 12 in. rock may be dumped from a height not
to exceed 16 in.
2 of 4 California Stormwater BMP Handbook January 2003
Construction
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Velocity Dissipation Devices EC-IP
Stone greater than 12 in. shall only be dumped onto filter fabric protected with a layer of
gravel with a thickness equal to one half the D50 rock size, and the dump height limited to
twice the depth of the gravel protection layer thickness.
• For proper operation of apron: Align apron with receiving stream and keep straight
throughout its length. If a curve is needed to fit site conditions, place it in upper section of
apron.
• Outlets on slopes steeper than 10 percent should have additional protection.
Costs
Costs are low if material is readily available. If material is imported, costs will be higher.
Average installed cost is $150 per device.
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 BMPs subjected to non-stormwater discharges daily while non-stormwater
discharges occur.
• Inspect apron for displacement of the riprap and damage to the underlying fabric. Repair
fabric and replace riprap that has washed away. If riprap continues to wash away, consider
using larger material.
• Inspect for scour beneath the riprap and around the outlet Repair damage to slopes or
underrying filter fabric immediately.
• Temporary devices should be completely removed as soon as the surrounding drainage area
has been stabilized or at the completion of construction.
References
County of Sacramento Improvement Standards, Sacramento County, May 1989.
Erosion and Sediment Control Handbook, S.J. Goldman, K. Jackson, T.A. Bursztynsky, P.E.,
McGraw Hill Book Company, 1986.
Handbook of Steel Drainage & Highway Construction, American Iron and Steel Institute, 1983.
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.
Water Quality Management Pkn for the Lake Tahoe Region, Volume II, Handbook of
Management Practices, Tahoe Regional Planning Agency, November 1988.
January 2003 California Stormwater BMP Handbook 3 of 4
Construction
www.cabmphandbooks.com
EC-10 Velocity Dissipation Devices
4d0 (min)
Pipe outlet to well
defined channel
PLAN VIEW
Key in 6"-9"
recommended for
entire perimeter
d=1.5 Max
rock dia.
Filter Fabric
SECTION A-A
Pipe Diameter
inches
12
18
24
Discharge
flP/s
5
10
10
20
30
40
30
40
50
60
Apron Length, La
ft
10
13
10
16
23
26
16
26
26
30
Rip Rap D50 Diameter
Min
inches
4
6
6
8
12
16
8
8
12
16
For larger or higher flows consult a Registered Civil Engineer
Source: USDA - SCS
4of 4 California Stormwater BMP Handbook
Construction
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January 2003
Velocity Dissipation Devices EC-10
Description and Purpose
Outlet protection is a physical device composed of rock, grouted
riprap, or concrete rubble, which is placed at the outlet of a pipe
or channel to prevent scour of the soil caused by concentrated,
high velocity flows.
Suitable Applications
Whenever discharge velocities and energies at the outlets of
culverts, conduits, or channels are sufficient to erode the next
downstream reach. This includes temporary diversion
structures to divert runon during construction.
• These devices may be used at the following locations:
Outlets of pipes, drains, culverts, slope drains, diversion
ditches, swales, conduits, or channels.
Outlets located at the bottom of mild to steep slopes.
Discharge outlets that carry continuous flows of water.
Outlets subject to short, intense flows of water, such as
flash floods.
Points where lined conveyances discharge to unlined
conveyances
Limitations
• Large storms or high flows can wash away the rock outlet
protection and leave the area susceptible to erosion.
Objectives
EC
SE
TR
WE
NS
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
..... Waste Management andW¥W1 Materials Pollution Control
Legend:
0 Primary Objective
13 Secondary Objective
Targeted Constituents
Sediment [
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organics
Potential Alternatives
None
r;,l..l'\ ''KM -V '-I ,'KJ'',VA I I'J
January 2003 California Stormwater BMP Handbook
Construction
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lof 4
EC-10 Velocity Dissipation Devices
• Sediment captured by the rock outlet protection may be difficult to remove without
removing the rock.
• Outlet protection may negatively impact the channel habitat.
• Grouted riprap may break up in areas of freeze and thaw.
• If there is not adequate drainage, and water builds up behind grouted riprap, it may cause
the grouted riprap to break up due to the resulting hydrostatic pressure.
Implementation
General
Outlet protection is needed where discharge velocities and energies at the outlets of culverts,
conduits or channels are sufficient to erode the immediate downstream reach. This practice
protects the outlet from developing small eroded pools (plange pools), and protects against gully
erosion resulting from scouring at a culvert mouth.
Design and Layout
As with most channel design projects, depth of flow, roughness, gradient, side slopes, discharge
rate, and velocity should be considered in the outlet design. Compliance to local and state
regulations should also be considered while working in environmentally sensitive streambeds.
General recommendations for rock size and length of outlet protection mat are shown in the
rock outlet protection figure in this BMP and should be considered minimums. The apron
length and rock size gradation are determined using a combination of the discharge pipe
diameter and estimate discharge rate: Select the longest apron length and largest rock size
suggested by the pipe size and discharge rate. Where flows are conveyed in open channels such
as ditches and swales, use the estimated discharge rate for selecting the apron length and rock
size. Flows should be same as the culvert or channel design flow but never the less than the
peak 5 year flow for temporary structures planned for one rainy season, or the 10 year peak flow
for temporary structures planned for two or three rainy seasons.
• There are many types of energy dissipaters, with rock being the one that is represented in
the attached figure.
• Best results are obtained when sound, durable, and angular rock is used.
• Install riprap, grouted riprap, or concrete apron at selected outlet. Riprap aprons are best
suited for temporary use during construction. Grouted or wired tied rock riprap can
minimize maintenance requirements.
• Rock outlet protection is usually less expensive and easier to install than concrete aprons or
energy dissipaters. It also serves to trap sediment and reduce flow velocities.
• Carefully place riprap to avoid damaging the filter fabric.
Stone 4 in. to 6 in. may be carefully dumped onto filter fabric from a height not to exceed
12 in.
Stone 8 in. to 12 in. must be hand placed onto filter fabric, or the filter fabric may be
covered with 4 in. of gravel and the 8 in. to 12 in. rock may be dumped from a height not
\ to exceed 16 in.
2 of 4 California Stormwater BMP Handbook January 2003
Construction
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Velocity Dissipation Devices EC-10
Stone greater than 12 in. shall only be dumped onto filter fabric protected with a layer of
gravel with a thickness equal to one half the Dso rock size, and the dump height limited to
twice the depth of the gravel protection layer thickness.
• For proper operation of apron: Align apron with receiving stream and keep straight
throughout its length. If a curve is needed to fit site conditions, place it in upper section of
apron.
• Outlets on slopes steeper than 10 percent should have additional protection.
Costs
Costs are low if material is readily available. If material is imported, costs will be higher.
Average installed cost is $150 per device.
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 BMPs subjected to non-stormwater discharges daily while non-stormwater
discharges occur.
• Inspect apron for displacement of the riprap and damage to the underlying fabric. Repair
fabric and replace riprap that has washed away. If riprap continues to wash away, consider
using larger material.
• Inspect for scour beneath the riprap and around the outlet. Repair damage to slopes or
underlying filter fabric immediately.
• Temporary devices should be completely removed as soon as the surrounding drainage area
has been stabilized or at the completion of construction.
References
County of Sacramento Improvement Standards, Sacramento County, May 1989.
Erosion and Sediment Control Handbook, S. J. Goldman, K. Jackson, T.A. Bursztynsky, P.E.,
McGraw Hill Book Company, 1986.
Handbook of Steel Drainage & Highway Construction, American Iron and Steel Institute, 1983.
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.
Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of
Management Practices, Tahoe Regional Planning Agency, November 1988.
January 2003 California Stormwater BMP Handbook 3 of 4
Construction
www.cabmphandbooks.com
EC-10 Velocity Dissipation Devices
4d0 (min)
Pipe outlet to well
defined channel
PLAN VIEW
Key in 6"-9"
recommended for
entire perimeter
Filter Fabric-
SECTION A-A
r-d=1.5 Max
rock dia.
6"
Pipe Diameter
inches
12
18
24
Discharge
ft3/S
5
10
10
20
30
40
30
40
50
60
Apron Length, La
ft
10
13
10
16
23
26
16
26
26
30
Rip Rap Djo Diameter
Min
inches
4
6
6
8
12
16
8
8
12
16
For larger or higher flows consults Registered Civil Engineer
Source: USDA - SCS
4of 4 California Stormwater BMP Handbook
Construction
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January 2003
Water Conservation Practices NS-1
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 eliminate 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.
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
NS
H
m
0
WM Materials Pollution Control
Legend:
0 Primary Objective
GH Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organics
0
Potential Alternatives
None
January 2003 California Stormwater BMP Handbook
Construction
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lof 2
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 (Caftrans), November 2000.
2 of 2 California Stormwater BMP Handbook January 2003
Construction
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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 stonnwater runoff or
discharge to the storm drain system or watercourses.
Limitations
• Finer solids are not effectively removed by filtration
systems.
• Paving opportunities may be limited during wet weather.
Implementation
General
m Avoid paving during the wet season when feasible.
• Reschedule paving and grinding activities if rain is in the
forecast.
• Train employees and sub-contractors in pollution
prevention and reduction.
• Store materials away from drainage courses to prevent
stormwater runon (see WM-i, Material Delivery and Storage).
Objectives
EC Erosion Control
SE Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
TR
WE
NS
...... Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
H Secondary Objective
Targeted Constituents
Sediment 0
Nutrients
Trash
Metals
Bacteria
01 and Grease 0
Organ ics
Potential Alternatives
None
:ASQ
January 2003 California Stormwater BMP Handbook 1 of 4California Stormwater BMP Handbook
Construction
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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 of temporary perimeter controls
can be found in EC-g, Earth Dikes and Drainage Swales; SE-i, 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 i 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:
2 of 4 California Stormwater BMP Handbook January 2003
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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 WM-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 sweepings 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. Appry 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 o f heavy metals and oil and
grease. Place drip pans or absorbent materials under paving equipment when not in use.
Clean up spills with absorbent materials rather than burying. See NS-io, 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.
January 2003 California Stormwater BMP Handbook 3 of 4
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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 filling thermoplastic to
allow room for material to move when the vehicle is deadheaded.
• Do not pre-heat, transfer, or load thermoplastic near dram inlets or watercourses.
• Clean truck beds dairy of loose debris and melted thermoplastic. When possible, recycle
thermoplastic material.
Raised/Recessed Pavement Marker Application and Removal
m 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 pkce 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 minimize 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 (Caftrans), November 2000.
4 of 4 California Stormwater BMP Handbook January 2003
Construction
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Illicit Connection/Discharge NS-6
Description and Purpose
Procedures and practices designed for construction contractors
to recognize illicit connections or illegally dumped or
discharged materials on 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 pre-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
m Review the SWPPP. Pre-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.
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
NS El
WM Materials Pollution Control
Legend:
El Primary Objective
GH Secondary Objective
Targeted Constituents
Sediment
Nutrients 0
Trash 0
Metals El
Bacteria El
Oi and Grease 0
Organics El
Potential Alternatives
None
(.ALIHHMAMUK.YIWA I feK
January 2003 California Storm water BMP Handbook
Construction
www .ca bmpha ndbooks .com
lof 3
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 of Illicit 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 dry 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 Storm water 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-^92005; USEPA, April 1992.
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Potable Water/Irrigation NS-7
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.
Limitations
None identified.
Implementation
• Direct water from offsite sources around or through a
construction site, where feasible, in a way that minimizes
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.
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
Non-StormwaterNSManagement Control 0
„... Waste Management andwm Materials Pollution Control
Legend:
0 Pri mary Objective
OH Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organics
0
0
0
0
Potential Alternatives
None
CALlK.'KMAilUKMWAIt.t
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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
minimize 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-stormwater 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 Storm water 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 (Caftrans), November 2000.
Stormwater Management for Construction Activities, Developing Pollution Prevention Plans
and Best Management Practices, EPA 832^-92005; USEPA, April 1992.
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Vehicle and Equipment Cleaning NS-8
Objectives
EC
SE
TR
WE
MS
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
13 Secondary Objective
Targeted Constituents
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 offsite
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-i, 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:
Sediment
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organics
0
0
0
0
Potential Alternatives
None
LALIHJKMA S1OKMWA I tK
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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 offeite 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 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.
• 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 Stormwater BMP Handbook 3 of 3
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Vehicle and Equipment Fueling NS-9
Objectives
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 offsite
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.
EC
SE
TR
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater ™
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
[HI Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oi and Grease [
Organic 5
Potential Alternatives
None
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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 after 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 runoff, 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 withberms 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 onsite.
• Immediately clean up 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-^92005; USEPA, April 1992.
January 2003 California Stormwaber BMP Handbook 3 of 3
Construction
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Vehicle & Equipment Maintenance NS-10
Description and Purpose
Prevent or reduce the contamination of stormwater resulting
from vehicle and equipment maintenance by running a "dry
and clean site". The best option would be to perform
maintenance activities at an offsite facility. If this option is not
available then work should be performed in designated areas
only, while providing cover for materials stored outside,
checking for leaks and spills, and containing and cleaning up
spills immediately. Employees and subcontractors must be
trained in proper procedures.
Suitable Applications
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 offsite
for maintenance and repair. Sending vehicles/equipment
offeite should be done in conjunction with TR-i, 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-g, Vehicle and Equipment Fueling.
Objectives
EC
SE
TR
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater „,
Management Control
Waste Management and
Materials Pollution Control
Legend:
Si Primary Objective
13 Secondary Objective
Targeted Constituents
Sediment
Nutrients El
Trash 0
Metals
Bacteria
Oi and Grease El
Organics El
Potential Alternatives
None
CALJORMA T
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NS-10 Vehicle & Equipment 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 offeite 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 runoff, 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.
• 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 of used 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.
• 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 "environmentally 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 of grease. Follow
manufacturers label for details on specific uses.
Waste Reduction
Parts are often cleaned using solvents such as trichloroethylene, trichloroethane, 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 a job 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 "chlor" 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.
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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
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
Suitable applications include all projects where Portland
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.
Objectives
EC
SE
TR
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater n,
Management Control
Waste Management and p*
Materials Pollution Control
Legend:
0 Pri mary Objective
13 Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organics
0
0
0
Potential Alternatives
None
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NS-12 Concrete Curing
• Use proper storage and handling techniques for concrete curing compounds. Refer to WM-
i, Material Delivery and Storage.
• Protect drain inlets prior to the application of curing compounds.
• Refer to WM-4, Spill Prevention and Control.
Water Curing far Bridge Decks, Retaining Walls, and other Structures
m 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-g Earth Dikes and Drainage Swales, EC-io, Velocity Dissipation Devices,
and EC-n, 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^-92005; USEPA, April 1992.
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Concrete Finishing NS-13
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 stormwater 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-io, Velocity
Dissipation Devices, and EC-n, Slope Drains.
Objectives
EC
SE
TR
WE
NS
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Pri mary Objective
(3 Secondary Objective
Targeted Constituents
Sediment 0
Nutrients
Trash
Metals 0
Bacteria
Oi and Grease
Organics 0
Potential Alternatives
None
CALTORM A SK>RMW.MT:<
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NS-13 Concrete Finishing
• Direct water from blasting operations away from inlets and watercourses to collection areas
for infiltration or other means of removal (dewatering). Refer to NS-2 De-Watering
Operations.
• Protect inlets during sandblasting operations. Refer to SE-io, 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-stormwater 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.
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^-92005; USEPA, April 1992.
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Silt Fence SE-1
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
Non-Stormwater
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 rill 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 credible slopes.
• Along streams and channels.
• Around temporary spoil areas and stockpiles.
• Below other small cleared areas.
Limitations
• Do not use in streams, channels, drain inlets, or anywhere flow
is concentrated.
NS Management Control
.._. Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
E Secondary Objective
Targeted Constituents
Sediment t
Nutnents
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
:ASQ,
January 2003 California Stormwater BMP Handbook
Construction
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1 of 8
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, it"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
A silt 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 70.
• 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 r.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 ft" of ponding area should be provided for every acre draining to the fence.
• Turn the ends of the filter fence uphill to prevent stormwater 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:
1. If 50 percent or less of the soil, by weight, 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.
2. 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. 100.
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 o °F to 120 °F.
• 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.
January 2003 California Stormwater BMP Handbook 3 of 8
Construction
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SE-1 Silt Fence
Materials
• Silt fence fabric should be woven polypropylene with a minimum width of 36 in. and a
minimum tensile strength of 100 Ib force. The fabric should conform to the requirements in
ASTM designation 04632 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 04491.
• 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 when joining two sections of fence 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
for 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 upslope side of posts using heavy-duty wire staples at least i 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, and then cut to the length of the barrier. When joints are necessary,
filter cloth should be spliced together only at a support post, with a minimum 6 in. overlap
and both ends securely fastened to the post.
• The trench should be backfilled 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): $7 per
lineal foot ($850 per drainage acre). Range of cost is $3.50 - 89.10 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 may be 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 Specifying 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),
UESPA, 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
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 5 of 8
Construction
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-1 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.
6 of 8 California Stormwater BMP Handbook January 2003
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§c
1
VJ
9.
Cross Barrier
(See note 10)
Mox reach «= 5OO' (See note il
Optional maintenanceopening detoil
LECENO
Tamped bach tiM
Slope direction
Direction of flow
Fabric
Toe of slop*
Cross barrier
SILT FENCE
End detail
NOTES
1. Construct the length of eocrt reach so that the change in boseelevation along the reach does not exceed 1/3 the height of the linearbarrier, in no cose shall the reoch length exceed 500'.
2. The last 8'-0" of fence shall be turned up slope.
J. Stoke dimensions are nominal.
4. Dimension rnoy vary to fit field condition.
5. Stakes shall be spaced a; 8'-Q" maximum and shell Be
positioned on downstream side of fence.
6. Stakes to overlap and fence fabric to fold around each stake
one full turn. Secure fobric to stoke with 4 staples.
7. Stakes shall be driven lightly together to prevent potential
flow-through of secimenl at joint. The tops of the stokesshall be secured with wire.
8. For end stoke, fence fabric shall be folded around two stakes
one full turn and secured with 4 staples
9. Minimum 4 staples per stoke. Dimensions shown ore typicai.
10. Cross barriers shell be a minimum of ' /3 and c maximum of 1/2 theheight of the linear barrier,
tl. Maintenance openings shall be constructed in o manner to ensuresediment remains behind silt fence.
12. Joining sections snail not be placed ot sump locations.
Silt fence
LToe of slope
CROSS BARRIER DETAIL
-Sandbags
See note 10
SECTION C-C
Tl
(D
o
(D
(Am
* 5Te 8CT i
1 I
§i
NJ
§
- Setback varies(See note 4)
Fabric _™. [ f—-2" x 2" Wood stoke(See notes 3 * S)
To« ot stone
Slope
S.lt fenc* -fobnc
6"
DETAIL A
Stoke 8
Pooric section A(See notes 6, 7 & 12)
footic section 9
(S«* notes f>, 1 4 12)
Stake A
LEGEND
Tamped
Slope direction
Direction of 'lo*
JOINING SECTION OETAil {TOP VIEW)
foorie
(S« note 8)
ENO S'AKE DETAIL (TOP VIEW}
2" x 2" *ooa stoke{See note 3)1/16"'
STAPLE DETAIL
(SEE NOTE 9)
Silt fence
Toe of slope
Eno gloke--Sondooqs (2-layers high)
END DETAIL OPTIONAL MAINTENANCE OPENING OETAIL
(SEE NOT£ 11)
m
Tl
<D
3
O
Sediment Basin SE-2
Description and Purpose
A sediment basin is a temporary basin formed by excavation or
by constructing an embankment so that sediment-laden runoff
is temporarily detained under quiescent conditions, allowing
sediment to settle out before the runoff is discharged.
Suitable Applications
Sediment basins may be suitable for use on larger projects with
sufficient space for constructing the basin. Sediment basins
should be considered for use:
• Where sediment-laden water may enter the drainage system
or watercourses
• On construction projects with disturbed areas during the
rainy season
• At the outlet of disturbed watersheds between 5 acres and
75 acres
• At the outlet of large disturbed watersheds, as necessary
• Where post construction detention basins are required
• In association with dikes, temporary channels, and pipes
used to convey runoff from disturbed areas
Limitations
Sediment basins must be installed only within the property limits
and where failure of the structure will not result in loss of life,
damage to homes or buildings, or interruption of use or service of
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
Non-StormwaterNSManagement Control
..... Waste Management andWM Materials Pollution Control
Legend:
0 Pri mary Objective
BH Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
01 and Grease
Organics
m
Potential Alternatives
SE-3 Sediment Trap (for smaller
areas)
January 2003
Errata 9-04
California Stormwater BMP Handbook
Construction
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lof 12
SE-2 Sediment Basin
public roads or utilities. In addition, sediment basins are attractive to children and can be very
dangerous. Local ordinances regarding health and safety must be adhered to. If fencing of the
basin is required, the type offence and its location should be shown in the SWPPP and in the
construction specifications.
• Generally, sediment basins are limited to drainage areas of 5 acres or more, but not
appropriate for drainage areas greater than 75 acres.
• Sediment basins may become an "attractive nuisance" and care must be taken to adhere to
all safety practices. If safely is a concern, basin may require protective fencing.
• Sediment basins designed according to this handbook are only practically effective in
removing sediment down to about the medium silt size fraction. Sediment-laden runoff with
smaller size fractions (fine silt and clay) may not be adequately treated unless chemical
treatment is used in addition to the sediment basin.
• Sites with very fine sediments (fine silt and clay) may require longer detention times for
effective sediment removal.
• Basins with a height of 25 ft or more or an impounding capacity of 50 ac-ft or more must
obtain approval from Division of Safety of Dams.
• Standing water may cause mosquitoes or other pests to breed.
• Basins require large surface areas to permit settling of sediment. Size may be limited by the
available area.
Implementation
General
A sediment basin is a controlled stormwater release structure formed by excavation or by
construction of an embankment of compacted soil across a drainage way, or other suitable
location. It is intended to trap sediment before it leaves the construction site. The basin is a
temporary measure with a design life of 12 to 28 months in most cases and is to be maintained
until the site area is permanently protected against erosion or a permanent detention basin is
constructed.
Sediment basins are suitable for nearly all types of construction projects. Whenever possible,
construct the sediment basins before clearing and grading work begins. Basins should be
located at the stormwater outlet from the site but not in any natural or undisturbed stream. A
typical application would include temporary dikes, pipes, and/or channels to divert runoff to the
basin inlet.
Many development projects in California will be required by local ordinances to provide a
stormwater detention basin for post-construction flood control, desilting, or stormwater
pollution control. A temporary sediment basin may be constructed by rough grading the post-
construction control basins earry in the project.
Sediment basins trap 70-80 % of the sediment that flows into them if designed according to this
handbook. Therefore, they should be used in conjunction with erosion control practices such as
2 of 12 California Stormwater BMP Handbook January 2003
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Sediment Basin SE-2
temporary seeding, mulching, diversion dikes, etc., to reduce the amount of sediment flowing
into the basin.
Planning
To improve the effectiveness of the basin, it should be located to intercept runoff from the
largest possible amount of disturbed area. The best locations are generally low areas. Drainage
into the basin can be improved by the use of earth dikes and drainage swales (see BMP EC-g).
The basin must not be located in a stream but it should be located to trap sediment-laden runoff
before it enters the stream. The basin should not be located where its failure would result in the
loss of life or interruption of the use or service of public utilities or roads.
• Construct before clearing and grading work begins when feasible.
• Do not locate in a stream.
• Basin sites should be located where failure of the structure will not cause loss of life, damage
to homes or buildings, or interruption of use or service of public roads or utilities.
• Large basins are subject to state and local dam safety requirements.
• Limit the contributing area to the sediment basin to only the runoff from the disturbed soil
areas. Use temporary concentrated flow conveyance controls to divert runoff from
undisturbed areas away from the sediment basin.
• The basin should be located: (i) by excavating a suitable area or where a low embankment
can be constructed across a swale, (2) where post-construction (permanent) detention
basins will be constructed, and (3) where the basins can be maintained on a year-round basis
to provide access for maintenance, including sediment removal and sediment stockpiling in
a protected area, and to maintain the basin to provide the required capacity.
Design
Sediment basins must be designed in accordance with Section A of the State of California
NPDES General Permit for Stormwater Discharges Associated with Construction Activities
(General Permit) where sediment basins are the only control measure proposed for the site. If
there is insufficient area to construct a sediment basin in accordance with the General Permit
requirements, then the alternate design standards specified herein may be used.
Sediment basins designed per the General Permit shall be designed as follows:
Option i:
Pursuant to local ordinance for sediment basin design and maintenance, provided that the
design efficiency is as protective or more protective of water quality than Option 3.
OR
Option 2:
Sediment basin(s), as measured from the bottom of the basin to the principal outlet, shall have
at least a capacity equivalent to 3,600 cubic feet (133 yds) of storage per acre draining into the
sediment basin. The length of the basin shall be more than twice the width of the basin. The
January 2003 California Stormwater BMP Handbook 3 of 12
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SE-2 Sediment Basin
length is determined by measuring the distance between the inlet and the outlet; and the depth
must not be less than 3 ft nor greater than 5 ft for safety reasons and for maximum efficiency.
OR
Option 3:
Sediment basin(s) shall be designed using the standard equation:
As=i.aQ/Vs (Eq. l)
Where:
As = Minimum surface area for trapping soil particles of a certain size
Vs = Settling velocity of the design particle size chosen
Q = CIA
Where
Q = Discharge rate measured in cubic feet per second
C = Runoff coefficient
1 = Precipitation intensity for the lo-year, 6-hour rain event
A = Area draining into the sediment basin in acres
The design particle size shall be the smallest soil grain size determined by wet sieve
analysis, or the fine silt sized (o.oi mm [or 0.0004 m-l) particle, and the Vs used shall be
100 percent of the calculated settling velocity.
The length is determined by measuring the distance between the inlet and the outlet; the
length shall be more than twice the dimension as the width; the depth shall not be less
than 3 ft nor greater than 5 ft for safety reasons and for maximum efficiency (2 ft of
sediment storage, 2 ft of capacity). The basin(s) shall be located on the site where it can
be maintained on a year-round basis and shall be maintained on a schedule to retain the
2 ft of capacity.
OR
Option 4:
The use of an equivalent surface area design or equation, provided that the design efficiency is
as protective or more protective of water quality than Option 3.
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Sediment Basin SE-2
Other design considerations are:
• The volume of the settling zone should be sized to capture runoff from a 2-year storm or
other appropriate design storms specified by the local agency. A detention time of 24 to 40
hours should allow 70 to 80 % of sediment to settle.
• The basin volume consists of two zones:
A sediment storage zone at least i ft deep.
A settling zone at least 2 ft deep.
• The length to settling depth ratio (L/SD) should be less than 200.
• Sediment basins are best used in conjunction with erosion controls. Sediment basins that
will be used as the only means of treatment, without upstream erosion and sediment
controls, must be designed according to the four options required by the General Permit (see
Options 1-4 above). Sediment basins that are used in conjunction with upstream erosion
and sediment controls should be designed to have a capacity equivalent to 67 yds of
sediment storage per acre of contributory area.
• The length of the basin should be more than twice the width of the basin; the length should
be determined by measuring the distance between the inlet and the outlet.
• The depth must be no less than 3 ft.
• Basins 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 basins 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 basin outlet and bypass structures.
• Basins should be designed to drain within 72 hours following storm events. If a basin fails to
drain within 72 hours, it must be pumped dry.
• Sediment basins, regardless of size and storage volume, should include features to
accommodate overflow or bypass flows that exceed the design storm event.
Include an emergency spillway to accommodate flows not carried by the principal
spillway. The spillway should consist of an open channel (earthen or vegetated) over
undisturbed material (not fill) or constructed of a non-erodible riprap.
The spillway control section, which is a level portion of the spillway channel at the
highest elevation in the channel, should be a minimum of 20 ft in length.
• Rock or vegetation should be used to protect the basin inlet and slopes against erosion.
• A forebay, constructed upstream of the basin may be provided to remove debris and larger
particles.
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SE-2 Sediment Basin
The outflow from the sediment basin should be provided with velocity dissipation devices
(see BMP EC-io) to prevent erosion and scouring of the embankment and channel.
Basin inlets should be located to maximize travel distance to the basin outlet.
The principal outlet should consist of a corrugated metal, high density polyethylene (HOPE),
or reinforced concrete riser pipe with dewatering holes and an anti-vortex device and trash
rack attached to the top of the riser, to prevent floating debris from flowing out of the basin
or obstructing the system. This principal structure should be designed to accommodate the
inflow design storm.
A rock pile or rock-filled gabions can serve as alternatives to the debris screen; although the
designer should be aware of the potential for extra maintenance involved should the pore
spaces in the rock pile clog.
The outlet structure should be placed on a firm, smooth foundation with the base securely
anchored with concrete or other means to prevent floatation.
Attach riser pipe (watertight connection) to a horizontal pipe (barrel). Provide anti-seep
collars on the barrel.
Cleanout level should be clearly marked on the riser pipe.
Proper hydraulic design of the outlet is critical to achieving the desired performance of the
basin. The outlet should be designed to drain the basin within 24 to 72 hours (also referred
to as "drawdown time"). The 24-hour limit is specified to provide adequate settling time; the
72-hour limit is specified to mitigate vector control concerns.
The two most common outlet problems that occur are: (i) the capacity of the outlet is too
great resulting in only partial filling of the basin and drawdown time less than designed for;
and (2) the outlet clogs because it is not adequately protected against trash and debris. To
avoid these problems, the following outlet types are recommended for use: (i) a single orifice
outlet with or without the protection of a riser pipe, and (2) perforated riser. Design
guidance for single orifice and perforated riser outlets follow:
- Flow Control Using a Single Orifice At The Bottom Of The Basin (Figure i): The outlet
control orifice should be sized using the following equation:
_ 2A(H-Ho)°5
= (lxW~5)A(H-Hd)05
3600Cr(2£)a5 ~ CT
where:
a = area of orifice (ft2)
A = surface area of the basin at mid elevation (ft2)
C = orifice coefficient
T = drawdown time of full basin (hrs)
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Sediment Basin _ SE-2
g = gravity (32.2 ft/s2)
H = elevation when the basin is full (ft)
Ho = final elevation when basin is empty (ft)
With a drawdown time of 40 hours, the equation becomes:
= (L75*10"6) A(H-Hof*
C (Eq-3)
Flow Control Using Multiple Orifices (see Figures):
at = - -05
With terms as described above except:
a* = total area of orifices
= maximum height from bwest orifice to the maximum water surface (ft)
roidof orifioes = height from the lowest orifice to the centroid of the orifice configuration
(ft)
Allocate the orifices evenly on two rows; separate the holes by 3x hole diameter
vertically, and by 120 degrees horizontally (refer to Figure 2).
Because basins are not maintained for infiltration, water loss by infiltration should be
disregarded when designing the hydraulic capacity of the outlet structure.
Care must be taken in the selection of "C"; 0.60 is most often recommended and used.
However, based on actual tests, GKY (1989), "Outlet Hydraulics of Extended Detention
Facilities for Northern Virginia Planning District Commission", recommends the
following:
C = 0.66 for thin materials; where the thickness is equal to or less than the orifice
diameter, or
C = 0.80 when the material is thicker than the orifice diameter
Installation
m Securely anchor and install an anti-seep collar on the outlet pipe/riser and provide an
emergency spillway for passing major floods (see local flood control agency).
• Areas under embankments must be cleared and stripped of vegetation.
• Chain link fencing should be provided around each sediment basin to prevent unauthorized
entry to the basin or if safety is a concern.
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SE-2 Sediment Basin
Costs
Average annual costs for installation and maintenance (2 year useful life) are:
• Basin less than 50,000 ft3: Range, $0.24 - $i.58/ft3. Average, $0.73 per ft3. $400 - $2,400,
$1,200 average per drainage acre.
• Basin size greater than 50,000 ft?: Range, $0.12 - $o.48/ft3. Average, $0.36 per fta. $200 -
$800, $600 average per drainage acre.
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.
• Examine basin banks for seepage and structural soundness.
• Check inlet and outlet structures and spillway for any damage or obstructions. Repair
damage and remove obstructions as needed.
• Check inlet and outlet area for erosion and stabilize if required.
• Check fencing for damage and repair as needed.
• 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 volume. Sediment removed during maintenance may
be incorporated into earthwork on the site or disposed of at appropriate locations.
• Remove standing water from basin within 72 hours after accumulation.
• BMPs that require dewatering shall be continuously attended while dewatering takes place.
Dewatering BMPs shall be implemented at all times during dewatering activities.
• To minimize vector production:
Remove accumulation of live and dead floating vegetation in basins during every
inspection.
Remove excessive emergent and perimeter vegetation as needed or as advised by local or
state vector control agencies.
References
A Current Assessment of Urban Best Management Practices: Techniques for Reducing
Nonpoint Source Pollution in the Coastal Zones, Metropolitan Washington Council of
Governments, March 1992.
Draft-Sedimentation and Erosion Control, an Inventory of Current Practices, USEPA. April
1990.
Guidelines for the Design and Construction of Small Embankment Dams, Division of Safety of
Dams, California Department of Water Resources, March 1986.
8of 12 California Stormwater BMP Handbook January 2003
Construction Errata 9-04
www.cabmphandbooks.com
Sediment Basin SE-2
Manual of Standards of Erosion and Sediment Control Measures, Association of Bay Area
Governments, May 1995.
McLean, J., 2000. Mosquitoes in Constructed Wetlands: A Management Bugaboo? InT.R.
Schueler and H.K. Holland [eds.], The Practice of Watershed Protection, pp. 29-33. Center for
Watershed Protection, Ellicott City, MD, 2000.
Metzger, M.E., D. F. Messer, C. L. Beitia, C. M. Myers, and V. L. Kramer. The dark site of
stormwater runoff management: disease vectors associated with structural BMPs, 2002.
National Management Measures to Control Nonpoint Source Pollution from Urban Areas,
United States Environmental Protection Agency, 2002.
Proposed Guidance Specifying Management Measures for Sources of Nonpoint Pollution in
Coastal Water, Work 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 of the Puget Sound Basin, Technical Manual, Publication #91-75,
Washington State Department of Ecology, February 1992.
U.S. Environmental Protection Agency (USEPA). Guidance Specifying Management Measures
for Nonpoint Pollution in Coastal Waters. EPA 840-6-9-002. 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 Sbormwater BMP Handbook 9 of 12
Errata 9-04 Construction
www.cabmphandbooks.com
SE-2 Sediment Basin
Stabilized
inlet ^ /
Embankment
Side slopes
3:1 (H:V)
Max
.^Outlet protection
TOP VIEW
Emergency
spillway
12 in Crest of
emergency
spillway
Design high water
Sediment storage
depth permanent pool
NOTE:SIDE VIEW
This outlet provides no drainage
for permanent pool.
FIGURE 1: TYPICAL TEMPORARY SEDIMENT BASIN
SINGLE QRIEICE DESIGN
NOT TO SCALE
10 of 12 California Stormwater BMP Handbook
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January 2003
Errata 9-04
Sediment Basin SE-2
Stabilized
inlet ^ I
Embankment
Side slopes
3:1 (H:V)
Max
L-Outlet protection
TOP VIEW
Emergency
spillway
Inflow
Settling depth
24" Win depth
Sediment storage
depth - 12" Min
Riser w/ hood
& trash rack
Riser encased in gravel
jacket. Upper two—thirds
perforated.
Emergency
spillway
12"
Stabilized Outlet
See EC-10
Anti—seep
collars
Anti—floatation block
SIDE VIEW
FIGURE 2: TYPICAL TEMPORARY SEDIMENT BASIN
MULTIPLE ORIFICE DESIGN
NOT TO SCALE
January 2003
Errata 9-04
California Stormwater BMP Handbook
Construction
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11 of 12
SE-2 Sediment
Maintenance &
emergency discharge
outlet
Debris screen
Trash rack
Debris screen
Water quality
discharge orifices
Maintenance &
emergency discharge
outlet
Outflow
Plan
Profile
Outflow
FIGURE 5: MULTIPLE ORIFICE OUTLET RISER
NOT TO SCALE
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Construction
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January 2003
Errata 9-04
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.
Limitations
• Not to be used in live streams or in channels with extended
base flows.
Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
Non-StormwaterNSManagement Control
..... Waste Management andWKI Materials Pollution Control
Legend:
0 Pri mary Objective
(HI Secondary Objective
Targeted Constituents
Sediment [
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organ ics
Potential Alternatives
SE-5 Fiber Rolls
SE-6 Gravel Bag Bern
SE-8 Sandbag Barrier
«-ALtH.«M.\MOKM'.V.\l
January 2003 California Stormwater BMP Handbook
Construction
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lof 5
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 maintenance following high velocity flows.
• Promotes sediment trapping which can be re-suspended during subsequent storms or
removal of the check dam.
Im plementation
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
2 of 5 California Stormwabar BMP Handbook January 2003
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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 4%).
The following guidance should be followed for the design and kyout 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 a-year storm or krger) 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
Berms. 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
m 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.
January 2003 California Stormwater BMP Handbook 3 of 5
Construction
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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-g.
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, USEPA, 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 (Caftrans), November 2000.
Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75,
Washington State Department of Ecology, February 1992.
4 of 5 California Stormwater BMP Handbook January 2003
Construction
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Check Dams SE-4
1.5 ft mirv
ELEVATION
8" to 12"
diameter rock
TYPICAL ROCK CHECK DAM SECTION
ROCK CHECK DAM
NOT TO SCALE
LO
GRAVEL BAG CHECK DAM ELEVATION
NOT TO SCALE
January 2003 California Stormwater BMP Handbook
Construction
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5 of 5
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.
• Inspect potential sediment tracking locations daily.
• Visible sediment tracking should be swept or vacuumed on a
dairy basis.
January 2003 California Stormwater BMP Handbook
Construction
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Objectives
EC Erosion Control
SE Sediment Control
TR Tracking Control
WE Wind Erosion Control
Non-Stormwater
H
0
MS Management Control
..... Waste Management andWM Materials Pollution Control
Legend:
121 Primary Objective
H Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organics
0
0
0
Potential Alternatives
None
lof 2
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 (9 yds 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 i, 2002 - March 31, 2003.
2 of 2 California Stormwater BMP Handbook January 2003
Construction
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Storm Drain Inlet Protection SE-10
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 i 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.
• 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 may be difficult in high flow conditions or if
runoff is heavily sediment laden. If high flow conditions are
Objectives
EC Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
..... Waste Management and
WW1 Materials Pollution Control
Legend:
0 Primary Objective
IHI Secondary Objective
SE
TR
WE
NS
Targeted Constituents
Sediment 13
Nutrients
Trash 0
Metals
Bacteria
0 3 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
:ASQ
January 2003 California Stormwater BMP Handbook 1 of 9California Stormwater BMP Handbook
Construction
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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 l 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 of ponding 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
2 of 9 California Stormwater 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 ponding to 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 may be selected.
Filter Fabric Fence: Appropriate for drainage basins with less than a 5% slope, sheet
flows, and flows under 0.5 cfe.
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 cfe,
and where overtopping is required to prevent flooding.
Bbck 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) i to 2 ft with 2:1 side slopes around the inlet.
Installation
m DIProtection 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.
1. Excavate a trench approximately 6 in. wide and 6 in. deep along the line of the silt fence
inlet protection device.
2. Place 2 in. by 2 in. wooden stakes around the perimeter of the inlet a maximum of 3 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.
3. Lay fabric along bottom of trench, up side of trench, and then up stakes. See SE-i, Silt
Fence, for details. The maximum silt fence height around the inlet is 24 in.
4. Staple the filter fabric (for materials and specifications, see SE-i, Silt Fence) to wooden
stakes. Use heavy-duty wire staples at least i in. in length.
5. Backfill the trench with gravel or compacted earth all the way around.
• DI Protection Type 2 - Excavated Drop Inlet Sediment Trap - The excavated drop
inlet sediment trap (Type 2) is shown in the attached figures. Install filter fabric fence in
January 2003 California Storm water BMP Handbook 3 of 9
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SE-10 Storm Drain Inlet Protection
accordance with DI Protection Type i. Size excavated trap to provide a minimum storage
capacity calculated at the rate 67 yds/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.
1. Use sand bag made of geotextile fabric (not burlap) and fill with 0.75 in. rock or 0.25 in.
pea graveL
2. Construct on gently sloping street.
3. Leave room upstream of barrier for water to pond and sediment to settle.
4. Place several layers of sand bags - overlapping the bags and packing them tightly
together.
5. 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.
1. 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.
2. Pkce 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.
3. 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.
4. 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.
4of 9 California Stormwater BMP Handbook January 2003
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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 may be 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 Draft, 1991.
January 2003 California Stormwater BMP Handbook 5 of 9
Construction
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SE-10 Storm Drain Inlet Protection
-Silt Fence per SE-01
SECTION A-A
6" Min
overlap at ends
of silt
Geotextile Blanket
Silt Fence per SE-01
PI PROTECTION TYPE 1
NOT TO SCALE
NOTES:
1. For use in areas where grading has been completed and final soil stabilization
and seeding are pending.
2. Not applicable in paved areas.
3. Not applicable with concentrated flows.
6 of 9 California Stormwater BMP Handbook
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January 2003
Storm Drain Inlet Protection SE-10
/;
3 MiiT^
Remove s
before rec
one— third
Cone
flow
X
— ;:
Sheet flow1^-
::
/
•'•
L
Notes
1. For use in c
2. Shape basin
3. For concentr
towards direcs
-Stabilize area and
grade uniformly
around perimeter
C .^Geotextile ?
/ Blanket f*- Silt fence Per SE-01: / x
/ 1:1 slope-n.
^V_y/__ [I l|
Ss&fc/ Drain inlet
'^S^?1^ ' "^~~
ediment
iching .—^/i LJ-
full.
Section A— A
* -~^^^x >< -f
jy^Sfiyf^(.K rVrVrVr*?
r
M^-
f t
L J
1
Plan
Dl PROTECTION TYPE
\ j£
O%> ' 12" Min
_J|P ' 24" Max-~-iX^.
4' ^
;
Rock filter(use if flow
is concentrated)
( .
T X ._ ,^^Edge of
j* sediment trap
^- — Drain inlet^-"x
^«!*. npnt^vtilp
x Blanket
— — Silt fence Per SE-01
J Y.
V\
\X*J
¥: 2
NOT TO SCALE
eared and grubbed and in graded areas,
so that longest inflow area faces longest length of trap,
"ated flows, shape basin in 2:1 ratio with length oriented
tion of flow.
January 2003 California Stormwater BMP Handbook
Construction
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7 of 9
SE-10 Storm Drain Inlet Protection
Inlet /-Edge of
/
Pavement
i
---Y-A
Spillway, 1—bag high
TYPICAL PROTECTION FOR INLET ON SUMP
Sandbags
2-bags high
Spillway, 1—bag high Sandbags
2—bags high
TYPICAL PROTECTION FOR INLET ON GRADE
NOTES:
1. Intended for short—term use.
2. Use to inhibit non-storm water flow.
3. Allow for proper maintenance and cleanup.
4. Bags must be removed after adjacent operation is completed
5. Not applicable in areas with high silts and clays without filter fabric.
PI PROTECTION TYPE 5
NOT TO SCALE
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Storm Drain Inlet Protection SE-10
Concrete block laidlengthwise on sides
@ perimeter of opening Hardware cloth orwire mesh
•Runoff with sediment
•Hardware clothwire mesh
PI PROTECTION - TYPE 4
NOT TO SCALE
Curb inlet
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Wind Erosion Control WE-1
Objectives
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:
• Construction vehicle traffic on unpaved roads
• 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.
January 2003 California Stormwater BMP Handbook
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EC Erosion Control
SE Sediment Control 13
TC Tracking Control
WE Wind Erosion Control 0
Non-Stormwater
Management Control
Waste Management and
Materials Pollution Control
NS
Legend:
0 Pri mary Objective
H Secondary Objective
Targeted Constituents
Sediment [
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organics
Potential Alternatives
None
lof 5
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 repellant, 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-io). 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 WE-1
Dust Control Practices
Dust control BMPs generally stabilize exposed surfaces and minimize activities that suspend or
track dust particles. The following 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 minimizing 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.
SITE CONDITION
Disturbed Areas
not Subject to
Traffic
Disturbed Areas
Subject to Traffic
Material Stock Pile
Stabilization
Demolition
Clearing/
Excavation
Truck Traffic on
Unpaved Roads
Mud/Dirt Carry
Out
DUST CONTROIPRACTICES
Permanent
Vegetation
X
Mulching
X
Wet
Suppression
(Watering)
X
X
X
X
X
X
Chemical
Dust
Suppression
X
X
X
X
X
Gravel or
Asphalt
X
X
X
X
Silt
Fences
X
X
Temporary Gravel
Construction
Entrances/Equipmeni
Wash Down
X
X
X
X
Haul
Truck
Covers
X
X
Minimize
Extent of
Disturbed
Area
X
X
X
X
Additional preventive measures include:
• Schedule construction activities to minimize exposed area (EC-l, Scheduling).
• Quickly stabilize exposed soik 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 clean up 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 Control"; 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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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.
• Where dust is a problem during dry 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.
Objectives
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
Non-Stormwater
H
H
NS
WM
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
(HI Secondary Objective
Targeted Constituents
Sediment [
Nutrients
Trash
Metals
Bacteria
0) and Grease
Organics
Potential Alternatives
None
CALTCflM \ -T
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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 of 50 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 runo ff from stabilized entrances/exits through a sediment trapping device befo re
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)
grindings 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 $1,200 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
Stormwater Quality Handbooks Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caftrans), November 2000.
Stormwater 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 Specifying Management Measures for Nonpoint Pollution in Coastal Waters, EPA
840-8-9-002, 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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Stabilized Construction Entrance/Exit TC-1
_Crushed aggregate greater than 3"
but smaller than 6"
Original
grade
12 " Min, unless otherwise
specified by a soils engineer
SECTION B-B
NTS
Q
01tr1
Q
LJ
Q_
en
x
-<=!u I
NOTE:
Construct sediment barrier
and channelize runoff to
sediment trapping device
B
Match
Existing
Grade
Width as
required to
accomodate
anticipated
traffic
Temporary pipe culvert
as needed
50' Min
or four times the circumference
of the largest construction vehicle tire,
whichever is greater
PLAN
NTS
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5 of 6
Stabilized Construction Entrance/Exit TC-1
Crushed aggregate greater than 3"
but smaller than 6".
Filter fabric
Original
'e
i— ur lyi
/.. grad
•12" Min, unless otherwise
specified by a soils engineer
SECTION B-BNTS
Crushed aggregate greater than 3"
but smaller than 6".
12" Min, unless otherwise
specified by a soils engineer
Corrugated steel panels
/-Originalgrade
Filter fabric
SECTION A-A
NOT TO SCAL£
NOTE:Construct sediment barrier
and channelize runoff to
sediment trapping device
Sediment trapping
device
oa:
a
CL
Corrugated steel panels
-B
: 10' min or
as required to
accomodate
anticipated
traffic, whichever
.is greater.
50' min
or four times the circumference
of the largest construction vehicle tire.
Match whichever is greater
Existing PLAN
Grade NTS
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January 2003
Stabilized Construction Roadway TC-2
Description and Purpose
Access roads, subdivision roads, parking areas, and other onsite
vehicle transportation routes should be stabilized immediately
after grading, and frequently maintained to prevent erosion and
control dust.
Suitable Applications
This BMP should be applied for the following conditions:
• Temporary Construction Traffic:
Phased construction projects and offsite road access
Construction during wet weather
• Construction roadways and detour roads:
Where mud tracking is a problem during wet weather
Where dust is a problem during dry weather
Adjacent to water bodies
Where poor soils are encountered
Limitations
• The roadway must be removed or paved when construction is
complete.
Objectives
NS
EC Erosion Control M
SE Sediment Control HI
TC Tracking Control 0
WE Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
@ Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oi and Grease
Organ ics
0
Potential Alternatives
None
t -V tH tMMA MIIKVIW-X II-K
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TC-2 Stabilized Construction Roadway
• Certain chemical stabilization methods may cause stormwater or soil pollution and should
not be used. See WE-i, Wind Erosion Control.
• Management of construction traffic is subject to air quality control measures. Contact the
local air quality management agency.
• Materials will likely need to be removed prior to final project grading and stabilization.
• Use of this BMP may not be applicable to very short duration projects.
Implementation
General
Areas that are graded for construction vehicle transport and parking purposes are especially
susceptible to erosion and dust. The exposed soil surface is continually disturbed, leaving no
opportunity for vegetative stabilization. Such areas also tend to collect and transport runoff
waters along their surfaces. During wet weather, they often become muddy quagmires that
generate significant quantities of sediment that may pollute nearby streams or be transported
offsite on the wheels of construction vehicles. Dirt roads can become so unstable during wet
weather that they are virtually unusable.
Efficient construction road stabilization not only reduces onsite erosion but also can
significantly speed onsite work, avoid instances of immobilized machinery and delivery vehicles,
and generally improve site efficiency and working conditions during adverse weather
Installation/Application Criteria
Permanent roads and parking areas should be paved as soon as possible after grading. As an
alternative where construction will be phased, the early application of gravel or chemical
stabilization may solve potential erosion and stability problems. Temporary gravel roadway
should be considered during the rainy season and on slopes greater than 5%.
Temporary roads should follow the contour of the natural terrain to the maximum extent
possible. Slope should not exceed 15%. Roadways should be carefully graded to drain
transversely. Provide drainage swales on each side of the roadway in the case of a crowned
section or one side in the case of a super elevated section. Simple gravel berms without a trench
can also be used.
Installed inlets should be protected to prevent sediment laden water from entering the storm
sewer system (SE-io, Storm Drain Inlet Protection). In addition, the following criteria should
be considered.
• Road should follow topographic contours to reduce erosion of the roadway.
• The roadway slope should not exceed 15%.
• Chemical stabilizers or water are usually required on gravel or dirt roads to prevent dust
(WE-i, Wind Erosion Control).
• Properly grade roadway to prevent runoff from leaving the construction site.
• Design stabilized access to support heaviest vehicles and equipment that will use it.
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Stabilized Construction Roadway TO2
• Stabilize roadway using aggregate, asphalt concrete, or concrete based on longevity, required
performance, and site conditions. The use of cold mix asphalt or asphalt concrete (AC)
grindings for stabilized construction roadway is not allowed.
• Coordinate materials with those used for stabilized construction entrance/exit points.
• If aggregate is selected, place crushed aggregate over geotextile fabric to at least 12 in. depth.
A crushed aggregate greater than 3 in. but smaller than 6 in. should be used.
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, impact weekly
during the rainy season and of two-week intervak in the non-rainy season to verify
continued BMP implementation.
• Keep all temporary roadway ditches clear.
• When no longer required, remove stabilized construction roadway and re-grade and repair
slopes.
• Periodically apply additional aggregate on gravel roads.
• Active dirt construction roads are commonly watered three or more times per day during the
dry season.
Costs
Gravel construction roads are moderately expensive, but cost is often balanced by reductions in
construction delay. No additional costs for dust control on construction roads should be
required above that needed to meet local air quality requirements.
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.
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 832-11-92005; USEPA, April 1992.
Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75,
Washington State Department of Ecology, February 1992.
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TO2 Stabilized Construction Roadway
Virginia Erosion and Sedimentation Control Handbook, Virginia Department of Conservation
and Recreation, Division of Soil and Water Conservation, 1991.
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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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
• Petroleum products such as fuel, oil, and grease
• Asphalt and concrete components
Objectives
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
NS Non-Stormwater
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
13 Secondary Objective
WM
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
01 and Grease
Organics
0
0
0
0
0
Potential Alternatives
None
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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
Limitations
• 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.
Surround 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, NFPAso.
• 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's 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. If the area is to be paved, pave as soon as materials are removed to stabilize
the soil.
Material Storage Areas and Practices
m Liquids, petroleum products, and substances listed in 40 CFR Parts no, 117, or 302 should
be stored in approved containers and drums and should not be overfilled. Containers and
drums should be pkced 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 10% of the aggregate
volume of all containers or 100% 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 pkced 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 then: 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-3, Stockpile Management.
• Materials should be stored 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.
• Ako see WM-6, Hazardous Waste Management, for storing of hazardous materials.
Material Delivery Practices
m 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 WM-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 may be 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.
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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-^92005; USEPA, April 1992.
January 2003 California Stormwater BMP Handbook 5 of 5
Construction
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Material Use WM-2
Objectives
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
EC
SE
TC
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and .-»
Materials Pollution Control u
Legend:
0 Primary Objective
H Secondary Objective
Targeted Constituents
Sediment 0
Nutrients 0
Trash 0
Metals 0
Bacteria
Oil and Grease 0
Organics 0
Potential Alternatives
None
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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:
• Minimize 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
offsite 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
cleanup procedures.
• Avoid exposing applied materials to rainfall and runoff unless sufficient time has been
allowed for them to dry.
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.
• 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^-92005; USEPA, April 1992.
January 2003 California Stormwater BMP Handbook 3 of 3
Construction
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Stockpile Management WM-3
Description and Purpose
Stockpile Management procedures and practices are designed
to reduce or eliminate air and stormwarer pollution from
stockpiles of soil, paving materials such as portland cement
concrete (PCC) rubble, asphalt concrete (AC), 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.
Objectives
EC Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
IWM Waste Management and
WWI Materials Pollution Control
Legend:
0 Primary Objective
13 Secondary Objective
SE
TC
WE
NS
Targeted Constituents
Sediment 0
Nutrients 0
Trash 0
Metals 0
Bacteria
OS and Grease 0
Organics 0
Potential Alternatives
None
ASQ
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WM-3 Stockpile Management
• Implement wind erosion control practices as appropriate on all stockpiled material. For
specific information, see WE-l, Wind Erosion Control.
• Manage stockpiles of contaminated soil in accordance with WM-y, Contaminated Soil
Management.
• Place bagged materials on pallets and under cover.
Protection of Non-Active Stockpiles
Non-active stockpiles of the identified materials should be protected further as follows:
Soil stockpiles
m 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 of Portland 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 of pressure treated wood with copper, chromium, and arsenic or
ammonical, copper, zinc, and arsenate
m 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 of Active 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.
January 2003 California Stormwater BMP Handbook 3 of 3
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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-l, 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 coinstruction 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
Objectives
EC
SE
TC
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
IE! Secondary Objective
Targeted Constituents
Sediment 0
Nutrients 0
Trash 0
Metals 0
Bacteria
Oi and Grease 0
Organics 0
Potential Alternatives
None
i- U !H:*M >M> > -M^ A IhK
January 2003 California Stormwater BMP Handbook
Construction
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lof 6
Spill Prevention and Control WM-4
• Fuels
• Lubricants
• Other petroleum distillates
Limitations
• In some cases it may be 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
• Be aware that different materials pollute in different amounts. Make sure that each
employee knows what a "significant spill" is for eachmaterial 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
m 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 clean up 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,
covers, and liners should be repaired or repkced as needed to maintain proper function.
Cleanup
m Clean up 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 property.
• 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-Significant 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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Spill 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.
Signtficant/Haxardous Spills
m 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. Don't 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-^92005; USEPA, April 1992.
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Solid Waste Management WM-5
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 bags, 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
Objectives
EC
SE
TC
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
Materials Pollution Control 0
Legend:
0 Primary Objective
1H1 Secondary Objective
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
0 land Grease
Organics
0
0
0
0
0
0
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.
• I nfo rm trash-hauling contractors that you will accept only watertight dumpsters for o nsite
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
m 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 orderry 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-^92005; USEPA, April 1992.
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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 gene rate waste from
the use of:
- Petroleum Products
- Concrete Curing Compounds
- Palliatives
- Septic Wastes
- Stains
- Wood Preservatives
- Asphalt Products
- Pesticides
- Acids
- Paints
- Solvents
- Roofing Tar
- Any materials deemed a hazardous waste in California,
Title 22 Division 4.5, or listed in 40 CFR Parts no, 117,
261, or 302
Objectives
EC
SE
TC
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
N on- Stormwater
Management Control
Waste Management and ,-»
Materials Pollution Control ""
Legend:
0 Primary Objective
13 Secondary Objective
Targeted Constituents
Sediment
Nutrients 0
Trash 0
Metals 0
Bacteria 0
01 and Grease 0
Organics 0
Potential Alternatives
None
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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
m 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 10% of the aggregate volume of all containers or 100% 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
pkced 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 dry 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 thoroughry 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.
Minimize 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 in appropriate containers (closed drums or
similar) and under cover.
January 2003 California Stormwater BMP Handbook 3 of 6
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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.
Waste Recycling Disposal
m 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 before 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
m 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
m 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 orgianized, 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.
January 2003 California Stormwater BMP Handbook 5 of 6
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Hazardous Waste Management WM-6
• The National Response Center, at (800) 424-8802, should be notified of spills of federal
reportable quantities in conformance with the requirements in 40 CFR parts no, 117, and
302. Also notify the Governors Office of Emergency Services Warning Center at (916) 845-
8911.
• 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, 43O/9-73-OO7, 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-^-92005; USEPA, April 1992.
6 of 6 California Stormwater BMP Handbook January 2003
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Contaminated Soil Management WM-7
Objectives
EC Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
..... Waste Management and
Materials Pollution Control
Legend:
0 Primary Objective
@ Secondary Objective
SE
TC
WE
NS
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, Dewatering 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
Targeted Constituents
Sediment
Nutrients 0
Trash 0
Metals 0
Bacteria 0
Oi and Grease 0
Organics 0
Potential Alternatives
None
'ASQ
January 2003 California Stormwater BMP Handbook 1 of 5California Stormwater BMP Handbook
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Contaminated Soil Management WM-7
SWPPP. Recent court rulings holding contractors liable for 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 starring 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 discobration, odors, differences in soil properties,
abandoned underground tanks or pipes, or buried debris.
Suspected soils should be tested at a certified laboratory.
Education
m 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 Procedures for Material with Aerially Deposited Lead (ADL)
m 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 Procedures for 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 Protectio n Agency (CAL-EPA)
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Contaminated Soil Management WM-7
California Divisio n of Occupation Safety and Health Administration (CAL-OSHA)
Local regulatory agencies
Procedures for Underground Storage Tank Removals
m 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
m 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-^-92005; USEPA, April 1992.
January 2003 California Stormwater BMP Handbook 5 of 5
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Concrete Waste Management WM-8
CONCRETE
WASHOUT
AREA
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 hydro-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.
Objectives
EC Erosion Control
SE Sediment Control
TC Tracking Control
WE Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and
NS
WM Materials Pollution Control 0
Legend:
0 Primary Objective
13 Secondary Objective
Targeted Constituents
Sediment 0
Nutrients
Trash
Metals 0
Bacteria
Oi and Grease
Organ ics
Potential Alternatives
None
January 2003 California Stormwater BMP Handbook
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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
m 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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• 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-5, Solid Waste
Management.
Onsite Temporary Concrete Washout Facility, 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. Dispo se o f hardened concrete on a regular basis.
• Temporary Concrete Washout Facility (Type 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
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WM-8 Concrete Waste Management
minimum width of 10 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 mil 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 10 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 a minimum of 10 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 pkce 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
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References
Blueprint for a Clean Bay: Best Management Practices to Prevent Storm water 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^-92005; USEPA, April 1992.
January 2003 California Stormwater BMP Handbook 5 of 7
Construction
www.cabmphandbooks.com
WM-8 Concrete Waste Management
LATH &-N
FLAGGING \
ON ALL N
SIDES
BERM — x
VARIES10'
•v WIN /-SANDBAG
0 a a a rf
\\ Y Y / _
'V
0 ^
n^ /
U
—( 10
o^ PL
^Q/ xLy A \"
o n/ a a D
10 MIL /PLASTIC LINING — /
PLAN
NOT TO SCALE
TYPE "BELOW GRADE"
10' /
i
UJ
a:<
i
MIN
9 !
a !
. \\
IT-
SANDBAG-y
MIL /
ASTIC LINING-^ /
WgglH^?
WP
\
^^ ^-BERM
SECTION A-A
NOT TO SCALE
10 MIL
, — PLASTIC LINING
1nr^ n
J ^WOOD FRAME SECURELY
i—1 FASTENED AROUND
ENTIRE PERIMETER WITH
TWO STAKES
SECTION B-B
\-STAKE
(TYP)
NOT TO SCALE
y ™ \ ™
10 MIL
mu-amurxcu PLASTIC LINING . .„-,-.,,., , , vnl IT ni-TCD,,IKII-n2 X 12 ROUGH 1- ACTUAL LAYOUT DETERMINED
WOOD FRAME PLAN IN FIELDl
NOT TO SCALE
TYPE "ABOVE GRADE"
2. THE CONCRETE WASHOUT SIGN
SHALL BE INSTALLED WITHIN
30 FT. OF THE TEMPORARY
CONCRETE WASHOUT FACILITY.
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Concrete Waste Management WM-8
UJ
o:
>
10'
MIN
\^-STAKE
(TYP)
1/8" DIA.
TEElSTEEL WIRE-4"
STAPLE DETAIL
10 MIL-
PLASTIC LINING PLAN
-STRAW BALE
(TYP)
NOT TO SCALE
PLYWOOD
48" X 24"
-PAINTED WHITE
TYPE "ABOVE GRADE"
WITH STRAW BALES
3'
3'
c
' CONCRETE °WASHOUT'
) O
•Wig&gr
', — BLACK LETTERS
6" HEIGHT
/-0.5" LAG' SCREWS
/-WOOD POST1" X 1" X fi'
CONCRETE WASHOUTSIGN DETAIL
(OR EQUIVALENT)
STAPLES
(2 PER BALE)
NATIVE MATERIAL-
(OPTIONAL)
10 MILPLASTIC LINING
WOOD OR
METAL STAKES
(2 PER BALE)
SECTION B-B
NOT TO SCALE
BINDING WIRE
STRAW BALE
NOTES
1. ACTUAL LAYOUT DETERMINED
IN FIELD.
2. THE CONCRETE WASHOUT SIGN
SHALL BE INSTALLED WITHIN
30 ET. OE THE TEMPORARY
CONCRETE WASHOUT FACILITY.
January 2003 California Stormwater BMP Handbook
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7 of 7
Sanitary/Septic Waste Management WM-9
Objectives
Description and Purpose
Proper sanitary and septic waste management prevent the
discharge of pollutants to stormwater from sanitary and septic
waste by providing convenient, well-maintained facilities, and
arranging for regular service and disposal.
Suitable Applications
Sanitary septic waste management practices are suitable for use
at all construction sites that use temporary or portable sanitary
and septic waste systems.
Limitations
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
m 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.
EC
SE
TC
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormwater
Management Control
Waste Management and ,-*
Materials Pollution Control m
Legend:
0 Pri mary Objective
03 Secondary Objective
Targeted Constituents
Sediment
Nutrients 121
Trash 0
Metals
Bacteria El
01 and Grease
Organics 0
Potential Alternatives
None
:_M_IKt:<MAS.IUKMW,\IKK
January 2003 California Stormwater BMP Handbook
Construction
www.cabmphandbooks.com
lof 3
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 colkction.
• If high winds are expected, portable sanitary facilities must be secured with spikes or
weighed down to prevent over turning.
2 of 3 California Stormwater BMP Handbook January 2003
Construction
www.cabmphandbooks.com
Sanitary/Septic Waste Management WM-9
References
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^-92005; USEPA, April 1992.
January 2003 California Stormwater BMP Handbook 3 of 3
Construction
www .cabmphandbooks .com
Liquid Waste Management WM-10
Description and Purpose
Liquid waste management includes procedures and practices to
prevent discharge of pollutants to the storm drain system or to
watercourses as a result of the creation, collection, and disposal
of non-hazardous liquid wastes.
Suitable Applications
Liquid waste management is applicable to construction projects
that generate any of the following non-hazardous by-products,
residuals, or wastes:
• Drilling slurries and drilling fluids
• Grease-free and oil-free wastewater and rinse water
• Dredgings
• Other non-stormwater liquid discharges not permitted by
separate permits
Limitations
• Disposal of some liquid wastes may be subject to specific
laws and regulations or to requirements of other permits
secured for the construction project (e.g., NPDES permits,
Army Corps permits, Coastal Commission permits, etc.).
• Liquid waste management does not apply to dewatering
operations (NS-2 Dewatering Operations), solid waste
management (WM-5, So lid Waste Management), hazardous
Objectives
EC
SE
TC
WE
NS
WM
Erosion Control
Sediment Control
Tracking Control
Wind Erosion Control
Non-Stormw/ater
Management Control
Waste Management and
Materials Pollution Control 0
Legend:
121 Primary Objective
OH Secondary Objective
Targeted Constituents
Sediment 0
Nutrients 0
Trash 0
Metals 0
Bacteria
Oi and Grease 0
Organ ics
Potential Alternatives
None
AMKVfV \-roRMIVAI F:J
January 2003 California Stormwater BMP Handbook
Construction
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lof 4
WM-10 Liquid Waste Management
wastes (WM-6, Hazardous Waste Management), or concrete slurry residue (WM-8, Concrete
Waste Management).
• Typical permitted non-stormwater discharges can include: water line flushing landscape
irrigation; diverted stream flows; rising ground waters; uncontaminated pumped ground
water; discharges from potable water sources; foundation drains; irrigation water; springs;
water from crawl space pumps; footing drains; lawn watering; flows from riparian habitats
and wetlands; and discharges or flows from emergency fire fighting activities.
Implementation
General Practices
• Instruct employees and subcontractors how to safely differentiate between non-hazardous
liquid waste and potential or known hazardous liquid waste.
• Instruct employees, subcontractors, and suppliers that it is unacceptable for any liquid waste
to enter any storm drainage device, waterway, or receiving water.
• Educate employees and subcontractors on liquid waste generating activities and liquid waste
storage and disposal procedures.
• Hold regular meetings to discuss and reinforce disposal procedures (incorporate into regular
safety meetings).
• Verify which non-stormwater discharges are permitted by the statewide NPDES permit;
different regions might have different requirements not outlined in this permit.
• Apply NS-8, Vehicle and Equipment Cleaning for managing wash water and rinse water
from vehicle and equipment cleaning operations.
Containing Liquid Wastes
m Drilling residue and drilling fluids should not be allowed to enter storm drains and
watercourses and should be disposed of.
• If an appropriate location is avaikble, drilling residue and drilling fluids that are exempt
under Title 23, CCR § 25ii(g) may be dried by infiltration and evaporation in a containment
facility constructed in conformance with the provisions concerning the Temporary Concrete
Washout Facilities detailed in WM-8, Concrete Waste Management.
• Liquid wastes generated as part of an operational procedure, such as water-laden dredged
material and drilling mud, should be contained and not allowed to flow into drainage
channels or receiving waters prior to treatment.
• Liquid wastes should be contained in a controlled area such as a holding pit, sediment basin,
roll-offbin, or portable tank.
• Containment devices must be structurally sound and leak free.
• Containment devices must be of sufficient quantity or volume to completely contain the
liquid wastes generated.
2 of 4 California Stormwater BMP Handbook January 2003
Construction
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Liquid Waste Management WM-10
• Precautions should be taken to avoid spills or accidental releases of contained liquid wastes.
Apply the education measures and spill response procedures outlined in WM-4, Spill
Prevention and Control
• Containment areas or devices should not be located where accidental release of the
contained liquid can threaten health or safety or discharge to water bodies, channels, or
storm drains.
Capturing Liquid Wastes
m Capture all liquid wastes that have the potential to affect the storm drainage system (such as
wash water and rinse water from cleaning walls or pavement), before they run off a surface.
• Do not allow liquid wastes to flow or discharge uncontrolled. Use temporary dikes or berms
to intercept flows and direct them to a containment area or device for capture.
• Use a sediment trap (SE-3, Sediment Trap) for capturing and treating sediment laden liquid
waste or capture in a containment device and allow sediment to settle.
Disposing of Liquid Wastes
m A typical method to handle liquid waste is to dewater the contained liquid waste, using
procedures such as described in NS-2, Dewatering Operations, and SE-2, Sediment Basin,
and dispose of resulting solids per WM-5, Solid Waste Management.
• Methods of disposal for some liquid wastes may be prescribed in Water Quality Reports,
NPDES permits, Environmental Impact Reports, 401 or 404 permits, and local agency
discharge permits, etc. Review the SWPPP to see if disposal methods are identified.
• Liquid wastes, such as from dredged material, may require testing and certification whether
it is hazardous or not before a disposal method can be determined.
• For disposal of hazardous waste, see WM-6, Hazardous Waste Management.
• If necessary, further treat liquid wastes prior to disposal. Treatment may include, though is
not limited to, sedimentation, filtration, and chemical neutralization.
Costs
Prevention costs for liquid waste management are minimal. Costs increase if cleanup or fines
are involved.
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.
January 2003 California Stormwater BMP Handbook 3 of 4
Construction
www.cabmphandbooks.com
WM-10 Liquid Waste Management
• Remove deposited solids in containment areas and capturing devices as needed and at the
completion of the task. Dispose of any solids as described in WM-5, Solid Waste
Management.
• Inspect containment areas and capturing devices and repair as needed.
References
Stormwater Quality Handbooks - Construction Site Best Management Practices (BMPs) Manual,
State of California Department of Transportation (Caftrans), November 2000.
4of 4 California Stormwater BMP Handbook January 2003
Construction
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Attachment R
Sampling Activity Log
RAIN EVENT GENERAL INFORMATION
Project Name
Project Number
Contractor
Sampler's Name
Signature
Date of Sampling
Season
(Check Applicable)
Storm Data
ALGA NORTE COMMUNITY PARK
D Rainy
Storm Start Date & Time:
Time elapsed since last storm
(Circle Applicable Units) Win. Hr. Days
CH Non-Rainy
Storm Duration (hrs):
Approximate Rainfall
Amount (inches)
For rainfall information: http://cdcc.water.ca.gov/weathcr.html or http://www.wrh.noaa.gov/wrhq/nwspagc.html
SAMPLE LOG
Sample Identification Sample Location Sample Collection
Date and Time
Specific sample locations descriptions may include: 1 00 ft upstream from discharge at eastern boundary, runoff from northern waste storage area, downgradient of inlet
located near the intersection of A Street and B avenue, etc.
FIELD ANALYSIS
QYes Q No
Sample Identification Test Result
Attachment S
Pollutant Testing Guidance Table
Attachment S
Pollutant Testing Guidance Table
Attachment S
Pollutant Testing Guidance Table 1
Category
Asphalt Products
Cleaning Products
Construction Site Material
Hot Asphalt
Asphalt Emulsion
Liquid Asphalt (tack coat)
Cold Mix
Crumb Rubber
Asphalt Concrete (Any
Type)
Acids
Bleaches
Detergents
TSP
Solvents
Visually Observable?
Yes - Rainbow Surface
or Brown Suspension
Yes - Black, solid
material
Yes - Rainbow Surface
or Brown Suspension
No
No
Yes - Foam
No
No
Pollutant Indicators 2 Suggested Analyses
Field 3 Laboratory
Visually Observable - No Testing Required
Visually Observable - No Testing Required
Visually Observable - No Testing Required
pH
Acidity
Anions (acetic acid,
phosphoric acid, sulfuric
acid, nitric acid,
hydrogen chloride)
Residual Chlorine
pH Meter
Acidity Test Kit
Chlorine
EPA 150.1 (pH)
SM 231 OB (Acidity)
EPA 300.0 (Anion)
SM 4500-CL G (Res.
Chlorine)
Visually Observable - No Testing Required
Phosphate
voc
svoc
Phosphate
None
None
EPA 365.3 (Phosphate)
EPA 601/602 or
EPA 624 (VOC)
EPA 625 (SVOC)
California Storm Water Quality Handbooks
Construction
January 200''DRAFT
Pollutant Testing Guidance Table
2 of 8
/ Mment S
Pollutant Testing Guidance Table
Attachment S
Pollutant Testing Guidance Table l
Category
Portland Concrete
Cement
&
Masonry Products
Construction Site Material
Portland Cement (PCC)
Masonry products
Sealant (Methyl
Methacrylate - MMA)
Incinerator Bottom Ash
Bottom Ash
Steel Slag
Foundry Sand
Fly Ash
Municipal Solid Waste
Mortar
Concrete Rinse Water
Non-Pigmented Curing
Compounds
Visually Observable?
Yes - Milky Liquid
No
No
No
Yes - Milky Liquid
Yes - Milky Liquid
No
Pollutant Indicators 2 Suggested Analyses
Field 3 Laboratory
Visually Observable - No Testing Required
pH
Alkalinity
Methyl Methacrylate
Cobalt
Zinc
Aluminum
Calcium
Vanadium
Zinc
pH Meter
Alkalinity or Acidity Test
Kit
None
Calcium Test
EPA 150.1 (pH)
SM 2320 (Alkalinity)
EPA 625 (SVOC)
EPA 200.8 (Metal)
EPA 200.8 (Metal)
EPA 200.7 (Calcium)
Visually Observable - No Testing Required
Visually Observable - No Testing Required
Acidity
Alkalinity
PH
voc
svoc
pH Meter
Alkalinity or Acidity Test
Kit
SM 231 OB (Acidity)
SM 2320 (Alkalinity)
EPA 150.1 (pH)
EPA 601/602 or
EPA 624 (VOC)
EPA 625 (SVOC)
California Storm Water Quality Handbooks
Construction
January 2003 DRAFT
Pollutant Testing Guidance Table
3 of 8
Attachment S
Pollutant Testing Guidance Table
Attachment S
Pollutant Testing Guidance Table 1
Category
Landscaping and Other
Products
Construction Site Material
Aluminum Sulfate
Sulfur-Elemental
Fertilizers-Inorganic 4
Fertilizers-Organic
Natural Earth (Sand,
Gravel, and Topsoil)
Herbicide
Pesticide
Lime
Visually Observable?
No
No
No
No
Yes - Cloudiness and
turbidity
No
Pollutant Indicators 2
Aluminum
TDS
Sulfate
Sulfate
Nitrate
Phosphate
Organic Nitrogen
Potassium
TOG
Nitrate
Organic Nitrogen
COD
Suggested Analyses
Field 3
TDS Meter
Sulfate
Sulfate
Nitrate
Phosphate
None
None
Nitrate
Laboratory
EPA 200.8 (Metal)
EPA 160.1 (TDS)
EPA 300.0 (Sulfate)
EPA 300.0 (Sulfate)
EPA 300.0 (Nitrate)
EPA 365.3 (Phosphate)
EPA351.3(TKN)
EPA 200.8 (Metal)
EPA 41 5.1 (TOC)
EPA 300.0 (Nitrate)
EPA351.3(TKN)
EPA 41 0.4 (COD)
Visually Observable - No Testing Required
Herbicide
Pesticide
Alkalinity
pH
None
pH Meter
Alkalinity or Acidity Test
Kit
Check lab for specific
herbicide or pesticide
SM 2320 (Alkalinity)
EPA 150.1 (pH)
California Storm Water Quality Handbooks
Construction
January 2003 DRAFT
Pollutant Testing Guidance Table
4 of 8
A. .jhmentS
Pollutant Testing Guidance Table
Attachment S
Pollutant Testing Guidance Table *
Category
Painting Products
Portable Toilet Waste
Products
Construction Site Material
Paint
Paint Strippers
Resins
Sealants
Solvents
Lacquers, Varnish,
Enamels, and Turpentine
Thinners
Portable Toilet Waste
Visually Observable?
Yes
No
No
No
No
No
No
Yes
Pollutant Indicators 2 Suggested Analyses
Field 3 Laboratory
Visually Observable - No Testing Required
VOC
SVOC
COD
SVOC
COD
COD
VOC
SVOC
COD
VOC
SVOC
VOC
COD
None
None
None
None
None
None
None
EPA 601/602 or
EPA 624 (VOC)
EPA 625 (SVOC)
EPA 41 0.4 (COD)
EPA 625 (SVOC)
EPA 41 0.4 (COD)
EPA 41 0.4 (COD)
EPA 601/602 or
EPA 624 (VOC)
EPA 625 (SVOC)
EPA 41 0.4 (COD)
EPA 601/602 or
EPA 624 (VOC)
EPA 625 (SVOC)
EPA 601/602 or
EPA 624 (VOC)
EPA 410.4 (COD)
Visually Observable - No Testing Required
California Storm Water Quality Handbooks
Construction
January 2003 DRAFT
Pollutant Testing Guidance Table
5 of 8
Attachment S
Pollutant Testing Guidance Table
Attachment S
Pollutant Testing Guidance Table 1
Category
Contaminated Soil 5
Line Flushing Products
Adhesives
Dust Palliative Products
Vehicle
Construction Site Material
Aerially Deposited Lead3
Petroleum
Other
Chlorinated Water
Adhesives
Salts (Magnesium Chloride,
Calcium Chloride, and
Natural Brines)
Antifreeze and Other
Vehicle Fluids
Batteries
Fuels, Oils, Lubricants
Visually Observable?
No
Yes - Rainbow Surface
Sheen and Odor
No
No
No
No
Yes - Colored Liquid
No
Yes - Rainbow Surface
Sheen and Odor
Pollutant Indicators 2
Lead
Suggested Analyses
Field 3
None
Laboratory
EPA 200.8 (Metal)
Visually Observable - No Testing Required
Contaminant Specific
Total chlorine
COD
Phenols
SVOC
Chloride
TDS
Cations (Sodium,
Magnesium, Calcium)
Contaminant Specific
Chlorine
None
Phenol
None
Chloride
TDS Meter
None
Contaminant Specific
SM 4500-CL G (Res.
Chlorine)
EPA 41 0.4 (COD)
EPA 420.1 (Phenol)
EPA 625 (SVOC)
EPA 300.0 (Chloride)
EPA 160.1 (TDS)
EPA 200.7 (Cations)
Visually Observable - No Testing Required
Sulfuric Acid
Lead
pH
None
None
pH Meter
Alkalinity or Acidity Test
Kit
EPA 300.0 (Sulfate)
EPA 200.8 (Metal)
EPA 150.1 (pH)
Visually Observable - No Testing Required
California Storm Water Quality Handbooks
Construction
January 20^DRAFT
Pollutant Testing Guidance Table
6 of 8
A, .imentS
Pollutant Testing Guidance Table
Attachment S
Pollutant Testing Guidance Table 1
Category
Soil
Amendment/Stabilization
Products
Construction Site Material
Polymer/Copolymer 6j 7
Straw/Mulch
Lignin Sulfonate
Psyllium
Guar/Plant Gums
Gypsum
Visually Observable?
No
Yes - Solids
No
No
No
No
Pollutant Indicators 2
Organic Nitrogen
BOD
COD
DOC
Nitrate
Sulfate
Nickel
Suggested Analyses
Field 3
None
None
None
None
Nitrate
Sulfate
None
Laboratory
EPA351.3(TKN)
EPA 405.1 (BOD)
EPA 41 0.4 (COD)
EPA 41 5.1 (DOC)
EPA 300.0 (Nitrate)
EPA 300.0 (Sulfate)
EPA 200.8 (Metal)
Visually Observable - No Testing Required
Alkalinity
IDS
COD
TOC
COD
TOC
Nickel
PH
Calcium
Sulfate
Aluminum
Barium
Manganese
Vanadium
Alkalinity
IDS Meter
None
None
pH Meter
Alkalinity or Acidity Test
Kit
Calcium
Sulfate
None
SM 2320 (Alkalinity)
EPA 160.1 (TDS)
EPA 41 0.4 (COD)
EPA 41 5.1 (TOC)
EPA 41 0.4 (COD)
EPA 41 5.1 (TOC)
EPA 200.8 (Metal)
EPA 150.1 (pH)
EPA 200.7 (Calcium)
EPA 300.0 (Sulfate)
EPA 200.8 (Metal)
California Storm Water Quality Handbooks
Construction
January 2003 DRAFT
Pollutant Testing Guidance Table
7 of 8
Attachment S
Pollutant Testing Guidance Table
Attachment S
Pollutant Testing Guidance Table 1
Category
Treated Wood Products
Construction Site Material
Ammoniacal-Copper-Zinc-
Arsenate (ACZA)
Copper-Chromium-Arsenic
(CCA)
Ammoniacal-Copper-
Arsenate (ACA)
Copper Naphthenate
Creosote
Visually Observable?
No
Yes - Rainbow Surface
or Brown Suspension
Pollutant Indicators 2
Arsenic
Total Chromium
Copper
Zinc
Suggested Analyses
Field 3
Total Chromium
Laboratory
EPA 200.8 (Metal)
Visually Observable - No Testing Required
Notes:
1. 1 If specific pollutant is known, analyze only for that specific pollutant. See MSDS to verify.
2. For each construction material, test for one of the pollutant indicators. Bolded pollutant indicates lowest analysis cost or best indicator. However, the
composition of the specific construction material, if known, is the first criterion for selecting which analysis to use.
3. See www.hach.com, www.lamotte.com. www.vsi.com and www.chemetrics.com for some of the test kits
4. If the type of inorganic fertilizer is unknown, analyze for all pollutant indicators listed.
5. Only if special handling requirements are required in the contract documents for aerially deposited lead (ADL)
6. If used with a dye or fiber matrix, it is considered visually observable and no testing is required.
7. Based upon research conducted by the State of California Department of Transportation (Caltrans), the following copolymers/polymers do not discharge
pollutants and water quality sampling and analysis is not required: Super Tak™, M-Binder™, Fish Stik™, Pro40dc™, Fisch-Bond™, and Soil Master
WR™.
California Storm Water Quality Handbooks
Construction
January 200^DRAFT
Pollutant Testing Guidance Table
8 of 8
Attachment T
Discharge Reporting Log
Project Name:
Project Number:
Date
ALGA NORTE COMMUNITY PARK
Material(s) Discharged Estimated Quantity Observed By
APPENDIX E
CALIFORNIA WATER QUALITY CONTROL
BOARD PERMIT WATER DISCHARGER
IDENTIFICATION (WDID) NUMBER - NOTICE OF
INTENT (NOI)
Linda S. Adams
Secretary for
Environmental
Protection
State Water Resources Control Board
Division of Water Quality
10011 Street o Sacramento, California 95814 o (916) 341-5536
Mailing Address: P.O. Box 1977 o Sacramento, California o
95812-1977
FAX (916) 341-5543 o Internet Address:
http://www.waterboards.ca.gov
Email Address:stormwater@waterboards.ca.gov
Approved Date: 08/31/2009
William Plummer
Carlsbad City
1635 Faraday Ave
Carlsbad, CA 92008
RECEIPT OF YOUR NOTICE OF INTENT (NOI)
Arnold
Schwarzenegger
Governor
DECEIVED
SEP 0 ; 2009
DEPARTMENT
The State Water Resources Control Board (State Water Board) has received and processed your NOI to comply
with the terms of the General Permit for Storm Water Discharges Associated with Construction Activity.
Accordingly, you are required to comply with the permit requirements.
The Waste Discharger Identification (WDID) number is: 9 37C356152 .
Please use this number in any future communications regarding this permit.
SITE DESCRIPTION
OWNER: Carlsbad City
DEVELOPER: Carlsbad City
SITE INFORMATION: Alga Norte Community Park
SITE LOCATION: NWC of Alicante Rd & Poinsettia Ln Carlsbad, CA
COUNTY: San Diego
TOTAL DISTRUBED ACRES: 33.0
START DATE: 01/10/2010
COMPLETION DATE: 09/01/2010
When construction is complete or ownership is transferred, dischargers are required to submit a Notice of
Termination (NOT) to the local Regional Water Board. All State and local requirements must be met in
accordance with Special Provision No. 7 of the General Permit. If you do not submit a NOT when construction
activity is completed you will continue and are responsible to pay the annual fee invoiced each July.
If you have any questions regarding permit requirements, please contact your Regional Water Board at(858)
467-2952. Please visit the storm water web page at www.waterboards.ca.gov/stormwtr/index.html to obtain an
NOT and other storm water related information and forms.
Sincerely,
Storm Water Section
Division of Water Quality
California Environmental Protection Agency
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