HomeMy WebLinkAboutMS 02-05; CARLSBAD OCEANVIEW ESTATES; PDP STORM WATER QUALITY MANAGEMENT PLAN; 2018-05-23CITY OF CARLSBAD
RECORD COPY l
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PRIORITY DEVELOPMENT PROJECT (PDP)
STORM WATER QUALITY MANAGEMENT PLAN (SWQMP)
FOR
CARLSBAD OCEANVIEW ESTATES
NE Corner of Hoover Street & Adams Street,
Carlsbad, CA, 92008
MS 02-05
G R2016-0030
DWG 438-2A
ENGINEER OF WORK:
Weidong Liu, PE,
PREPARED FOR:
HENRY OLIVIER & ILEANA VISCAL
P.O. Box 9493
San Bernardino, CA 92427
Ph: (909) 880-1146
Fax: (909) 880-1557
holivier@geo-cal.com
PREPARED BY:
W&W LAND DESIGN & CONSULTANTS LLC.
2335 W. Foothill Blvd., Suite 1
Upland, CA 91786
(909) 608-7118
Email: winstonliu@ww-technologies.com
DATE:
May 23, 2018
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TABLE OF CONTENTS
• Certification Page
• Project Vicinity Map
• FORM E-34 Storm Water Standard Questionnaire
• Site Information
• FORM E-36 Standard Project Requirement Checklist
• Summary of PDP Structural BMPs
• Attachment 1: Backup for PDP Pollutant Control BMPs
• Attachment 1 a: OMA Exhibit
• Attachment 1 b: Tabular Summary of DMAs and Design Capture Volume
Calculations
• Attachment 1 c: Harvest and Use Feasibility Screening (when applicable)
• Attachment 1 d: Categorization of Infiltration Feasibility Condition (when
applicable)
• Attachment 1 e: Pollutant Control BMP Design Worksheets I Calculations
• Attachment 1f Stormwater Pollutant Sources I Source Control Checklist
• Attachment 2: Backup for POP Hydromodification Control Measures
• Not Applicable
• Attachment 3 Structural BMP Maintenance Thresholds and Actions
• Attachment 4: Single Sheet BMP (SSBMP) Exhibit
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CERTIFICATION PAGE
Project Name: CARLSBAD OCEAN ESTATES
Project ID: MS 02-05
I hereby declare that I am the Engineer in Responsible Charge of design of storm water
BMPs for this project, and that I have exercised responsible charge over the design of the
project as defined in Section 6703 of the Business and Professions Code, and that the
design is consistent with the requirements of the BMP Design Manual, which is based on
the requirements of SDRWQCB Order No. R9-2013-0001 (MS4 Permit) or the current Order.
I have read and understand that the City Engineer has adopted minimum requirements for
managing urban runoff, including storm water, from land development activities, as
described in the BMP Design Manual. I certify that this SWQMP has been completed to the
best of my ability and accurately reflects the project being proposed and the applicable
source control and site design BMPs proposed to minimize the potentially negative impacts
of this project's land development activities on water quality. I understand and acknowledge
that the plan check review of this SWQMP by the City Engineer is confined to a review and
does not relieve me, as the Engineer in Responsible Charge of design of storm water BMPs
for this project, of my responsibilities for project design.
Engineer of Work's Signature, PE Number & Expiration Date
Winston Liu
Print Name
W&W Land Design & Consultants, LLC.
Company
PROJECT VICINITY MAP
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CITY OF CARLSBAD
VICINITY MAP
NOT TO
SCALE
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,r ~· i-' City o Carlsbad
STORM WATER STANDARDS
QUESTIONNAIRE
Develop_rr1_ent Services
Land Development Engineering
1635 Faraday Avenue
(760) 602-2750
www .ca rl sbadca .gov
E-34
I INSTRUCTIONS:
To address post-development pollutants that may be generated from development projects. the city requires that new
development and significant redevelopment priority projects incorporate Permanent Storm Water Best Management
Practices (BMPs) into the project design per Carlsbad BMP Design Manual (BMP Manual). To view the BMP Manual.
refer to the Engineering Standards (Volume 5).
This questionnaire must be completed by the applicant in advance of submitting for a development application
(subdivision. discretionary permits and/or construction permits). The results of the questionnaire determine the level of
storm water standards that must be applied to a proposed development or redevelopment project Depending on the
outcome. your project will either be subject to 'STANDARD PROJECT' requirements or be subject to 'PRIORITY
DEVELOPMENT PROJECT' (PDP) requirements.
Your responses to the questionnaire represent an initial assessment of the proposed project conditions and impacts. City
staff has responsibility for making the final assessment after submission of the development application. If staff
determines that the questionnaire was incorrectly filled out and is subject to more stringent storm water standards than
initially assessed by you. this will result in the return of the development application as incomplete. In this case. please
make the changes to the questionnaire and resubmit to the city.
If you are unsure about the meaning of a question or need help in determining how to respond to one or more of the
questions, please seek assistance from Land Development Engineering staff.
!\ completed and signed questionnaire must be submitted with each development project application Only one
completed and signed questionnaire is required when multiple development applications for the same project are
submitted concurrently.
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PROJECT NAME CARLSBAD OCEAN ESTATES PROJECT ID
ADDRESS NE Corner of Hoover Street & Adams Street. City of Carlsbad. CA APN 206-180 32
The project 1s (check one) Ill New Development D Redevelopment
The total proposed disturbed area is: 48352 ft'(l.11 ) acres
The total proposed newly created and/or replaced impervious area is 22001 ft2 ( 0.51 ) acres
If your project is covered by an approved SWQMP as part of a larger development project, provide the project ID and the
SWQMP # of the larger development project:
Project ID MS 02-05 SWQMP#
Then, go to Step 1 and follow the instructions. When completed, sign the form at the end and submit this with your
application to the city.
E-34 Page 1 of 4 REV 02116
'
i
I
STEP 1
T:O BE COMPLETED FOR ALL PROJECTS
o determine if your project is a "development project", please answer the fo llowing question:
Is your project LIMITED TO routine maintenance activity and/or repair/improvements to an existing building
or structure that do not alter the size (See Section 1.3 of the BMP Design Manual for guidance)?
YES NO
D
If you answered "yes" to the above question, provide justification below then go to Step 5, mark the third box stating "my
project is not a 'development project' and not subject to the requirements of the BMP manual" and complete applicant
information.
Justification/discussion: (e.g. the project includes only interior remodels within an existing building):
No, the project will discharge runoff directly to existing underground storm drains
If d ' s 2
I
To determine if your project is exempt from PDP requirements pursuant to MS4 Permit Provision E.3.b.(3), please answer
the following questions:
('s your project LIMITED to one or more of the following:
1. Constructing new or retrofitting paved sidewalks, bicycle lanes or trails that meet the following criteria:
a) Designed and constructed to direct storm water runoff to adjacent vegetated areas, or other non-
erodible permeable areas;
b) Designed and constructed to be hydraulically disconnected from paved streets or roads;
c) Designed and constructed with permeable pavements or surfaces in accordance with USEPA
Green Streets auidance?
2. Retrofitting or redeveloping existing paved alleys, streets, or roads that are designed and constructed in
accordance with the USEPA Green Streets guidance?
3. Ground Mounted Solar Array that meets the criteria provided in section 1.4.2 of the BMP manual?
YES NO
D
D
D
If you answered "yes" to one or more of the above questions, provide discussion/justification below, then go to Step 5, mark
the second box stating "my project is EXEMPT from PDP ... " and complete applicant information .
Discussion to justify exemption ( e.g. the project redeveloping existing road designed and constructed in accordance with
the USEPA Green Street guidance):
I If you answered "no" to the above auestions, your project is not exempt from PDP, go to Steo 3.
E-34 Page 2 of 4 REV 02/16
~o determine if your project is a PDP, please answer the following questions (MS4 Permit Provision E.3.b.(1 )):
1. Is your project a new development that creates 10,000 square feet or more of impervious surfaces
collectively over the entire project site? This includes commercial, industrial, residential, mixed-use,
and ublic develo ment ro ·ects on ublic or rivate land.
2. Is your project a redevelopment project creating and/or replacing 5,000 square feet or more of
impervious surface collectively over the entire project site on an existing site of 10,000 square feet or
more of impervious surface? This includes commercial, industrial, residential, mixed-use, and public
develo ment ro ·ects on ublic or rivate land.
3. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more
of impervious surface collectively over the entire project site and supports a restaurant? A restaurant is
a facility that sells prepared foods and drinks for consumption, including stationary lunch counters and
refreshment stands selling prepared foods and drinks for immediate consumption (Standard Industrial
Classification SIC code 5812 .
4. Is your project a new or redevelopment project that creates 5,000 square feet or more of impervious
surface collectively over the entire project site and supports a hillside development project? A hillside
develo ment ro·ect includes develo ment on an natural slo e that is twent -five ercent or reater.
5. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more
of impervious surface collectively over the entire project site and supports a parking lot? A parking lot is
a land area or facility for the temporary parking or storage of motor vehicles used personally for
business or for commerce.
6. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more
of impervious surface collectively over the entire project site and supports a street, road, highway
freeway or driveway? A street, road, highway, freeway or driveway is any paved impervious surface
used for the trans ortation of automobiles, trucks, motorc cles, and other vehicles.
'(. Is your project a new or redevelopment project that creates and/or replaces 2,500 square feet or more
of impervious surface collectively over the entire site, and discharges directly to an Environmentally
Sensitive Area (ESA)? "Discharging Directly ton includes flow that is conveyed overland a distance of
200 feet or less from the project to the ESA, or conveyed in a pipe or open channel any distance as an
isolated flow from the ro ·ect to the ESA i.e. not commin led with flows from ad·acent lands . *
8. Is your project a new development or redevelopment project that creates and/or replaces 5,000 square
feet or more of impervious surface that supports an automotive repair shop? An automotive repair
shop is a facility that is categorized in any one of the following Standard Industrial Classification (SIC)
codes: 5013, 5014, 5541, 7532-7534, or 7536-7539.
9. Is your project a new development or redevelopment project that creates and/or replaces 5,000 square
feet or more of impervious area that supports a retail gasoline outlet (RGO)? This category includes
RGO's that meet the following criteria: (a) 5,000 square feet or more or (b) a project Average Daily
Traffic AD of 100 or more vehicles er da .
10. Is your project a new or redevelopment project that results in the disturbance of one or more acres of land
and are expected to generate pollutants post construction?
11 . Is your project located within 200 feet of the Pacific Ocean and (1) creates 2,500 square feet or more of
impervious surface or (2) increases impervious surface on the property by more than 10%? (CMG
21 .203.040
YES NO
D
D
D
D
D
D
D
D
D
D
D
If you answered "yes" to one or more of the above questions, your project is a PDP. If your project is a redevelopment
project, go to step 4. If your project is a new project. go to step 5, check the first box stating "My project is a PDP ... "
and complete applicant information.
If you answered "no" to all of the above questions, your project is a 'STANDARD PROJECT.' Go to step 5, check the
second box statin "M ro·ect is a 'STANDARD PROJECT' ... " and com lete a licant information.
E-34 Page 3 of 4 REV 02/16
I STEP 4
TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT ARE PRIORITY DEVELOPMENT PROJECTS (PDP)
.
ONLY
Complete the questions below regarding your redevelopment project (MS4 Permit Provision E.3.b.(2)):
YES NO
Does the redevelopment project result in the creation or replacement of impervious surface in an amount
of less than 50% of the surface area of the previously existing development? Complete the percent
impervious calculation below:
Existing impervious area (A) = sq. ft. D D
Total proposed newly created or replaced impervious area (B) = sq. ft.
Percent impervious area created or replaced (BIA)"100 = %
If you answered "yes", the structural BMPs required for PDP apply only to the creation or replacement of impervious
surface and not the entire development. Go to step 5, check the first box stating "My project is a PDP ... " and complete
applicant information.
If you answered "no," the structural BM P's required for PDP apply to the entire development. Go to step 5, check the
check the first box stating "My project is a PDP ... " and complete aoolicant information.
STEPS
CHECK THE APPROPRIATE BOX AND COMPLETE APPLICANT INFORMATION
IZI My project is a PDP and must comply with PDP stormwater requirements of the BMP Manual. I understand I must
prepare a Storm Water Quality Management Plan (SWQMP) for submittal at time of application.
0 My project is a 'STANDARD PROJECT' OR EXEMPT from PDP and must only comply with 'STANDARD PROJECT'
stormwater requirements of the BMP Manual. As part of these requirements, I will submit a "Standard Project
Requirement Checklist Form E-36" and incorporate low impact development strategies throughout my project.
Note: For projects that are close to meeting the PDP threshold, staff may require detailed impervious area calculations
and exhibits to verify if 'STANDARD PROJECT' stormwater requirements apply.
0 My Project is NOT a 'development project' and is not subject to the requirements of the BMP Manual.
Applicant Information and Signature Box
""''"'"'''·'' ~ Applicant Title: fZ_-.G
Date: s-ql,,ff!J Applicant Signature: ~=
Environmentally Sens1t1ve Areas include but are not 11m1ted to all Clean Water Act Section 303(d) impaired water bodies, areas designated as Areas of Special
Biological Significance by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); water bodies
designated with the RARE beneficial use by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and
amendments): areas designated as preserves or their equivalent under the Multi Species Conservation Program within the Cities and County of San Diego: Habitat
!'y1anagement Plan: and any other equivalent environmentally sensitive areas which have been identified by the City.
Th. B , C"t U O I IS ox or /CV se niv
YES NO
City Concurrence: D D
By:
Date:
Project ID:
E-34 Page 4 of 4 REV 02/16
SITE INFORMATION CHECKLIST
Project Summary Information , . . ,,;·,.., . _., ::·· :· .
Project Name Carlsbad Ocean Estates
Project ID MS 02-05
Project Address NE Corner of Hoover Street & Adams Street.
Carlsbad, CA, 92008
Assessor's Parcel Number(s) (APN(s)) 206· 180-32
Project Watershed (Hydrologic Unit) Carlsbad 904
Parcel Area 1.11 ! 48,352 Acres Square Feet)
Existing Impervious Area 0 Acres (0 Square Feet) (subset of Parcel Area)
Area to be disturbed by the project 1. 11 Acres (48,352 Square Feet) (Project Area)
Project Proposed Impervious Area 0.33 Aqes ( 14,229 Square Feet) ( subset of Proiect Area)
Project Proposed Pervious Area 0.77 Acres (33,568 Square Feet) (subset of Proiect Area)
Note: Proposed Impervious Area+ Proposed Pervious Area= Area to be Disturbed by the
Project.
This may be less than the Parcel Area.
Description of Existina Site Condition and Drainaae Patterns .. '·': '/~/'
Current Status of the Site (select all that apply):
·1 Existing development
i Previously graded but not built out
i Agricultural or other non-impervious use
0Vacant, undeveloped/natural
Description I Additional Information:
I
Existing Land Cover Includes (select all that apply):
0Vegetative Cover
I Non-Vegetated Pervious Areas
.J Impervious Areas
Description I Additional Information:
Underlying Soil belongs to Hydrologic Soil Group (select all that apply):
CJ NRCS Type A
0NRCS Type B
,-1 NRCS Type C
·CJ NRCS Type D
Approximate Depth to Groundwater (GW):
,J GW Depth < 5 feet
Cl 5 feet < GW Depth < 1 O feet
CJ 10 feet < GW Depth < 20 feet
0 GW Depth > 20 feet
Existing Natural Hydrologic Features (select all that apply):
'l Watercourses
::J Seeps
J Springs
:::I Wetlands
0None
Description I Additional Information:
', Descript1ori of Existing Site Topography and Drainage [How 1s storm water runoff conveyed from
' the site? At a minimum, this description should answer (1) whether existing drainage
conveyance 1s natural or urban, (2) describe existing constructed storm water conveyance
systems 1f applicable, and (3) 1s runoff from offsite conveyed through the site? 1f so. descnbe]
The existing tributary area 1s approximately 1 .1 O acre of vacant natural dirt drainage
tributary area. Refer to the "Existing Hydrology Map' in Appendix E in Hydrology Study
Report for an illustration of the drainage zones Sub area E-1 drains towards westerly to
an existing drainage inlet at SE corner Adams Street and Hoover Avenue.
Description of Proposed Site Development and Drainage Patterns
Project Description I Proposed Land Use and/or Activities
The proposed project is to build 3 Residential buildings with landscape and BMP
' List/describe proposed impervious features of the proiect (e.g buildings, roadways parking 1 lots, courtyards athletic courts, other impervious features)
I
3 Residential Buildings, Sidewalk & Driveways, Walls Concrete Ditches
List/describe proposed pervious features of the project (e.g, landscape areas)
Landscape
Does the project include grading and changes to site topography?
0Yes
~ No
Description I Additional Information
Please see grading plan for details
Does the project include changes to site drainage (e.g., installation of new storm water
conveyance systems)?
0Yes
_:: No
Description I Additional Information:
In the proposed condition, the project site could be divided into 9 drainage subareas. The subareas A 1
and AZ drains through brow ditch into a catch basin with rip-rap, and then drain with A3 and A4 runoffs
towards westerly into a BMP device that is connected to the iron pipe inverts at the northwest end of
the parcel on Hoover Street. The subarea Bl also drains through brow ditch into a catch basin that is
connected to a BMP device located in subarea B3. Runoffs from subarea BZ and B3 drain towards
westerly into the same BMP that is shared with runoffs from Bl and is connected to the iron pipe
inverts at the west end of the parcel on Adams street. Subarea Cl and CZ drain into a BMP device
located on Cl that is connected to the iron pipe inverts at the west south end of the parcel on Adams
street Refer to Hydraulic Study Report for details,
I I
I
Identify whether any of the following features. activities, and/or pollutant source arels will be
present (select all that apply):
[]On-site storm drain inlets
Olnterior floor drains and elevator shaft sump pumps
[]Interior parking garages
0Need for future indoor & structural pest control
[]Landscape/Outdoor Pesticide Use
0Pools, spas, ponds, decorative fountains, and other water features
::c Food service
: Refuse areas
Industrial processes
· Outdoor storage of equipment or materials
.. Vehicle and Equipment Cleaning
· Vehicle/Equipment Repair and Maintenance
Fuel Dispensing Areas
= Loading Docks
_: Fire Sprinkler Test Water
' , Miscellaneous Drain or Wash Water
0Plazas, sidewalks, and parking lots
Identification of Receiving Water Pollutants of Concern '" ..
Describe path of storm water from the project site to the Pacific Ocean (or bay, lagoon, lake or
reservoir, as applicable):
All proposed runoff volume will be detained into the proposed dry wells and emergency over flow into
Hoover and Adams Street through an existing 12" drainage pipe crossing adjacent residential property. An
existing 6 feet wide storm drain easement for the drainage pipe was shown on City drawing No. R-332.
List any 303(d) impaired water bodies within the path of storm water from the project site to the
Pacific Ocean (or bay, lagoon, lake or reservoir, as applicable), identify the
pollutant(s)/stressor(s) causing impairment, and identify any TMDLs for the impaired water
bodies:
303(d) Impaired Water Body Pollutant(s)/Stressor(s) TMDLs
Agua Hedionda Creek/Lagoon Enterococcus, Coliform, Manganese
Phophorus, Nitrogen, Selenium,
Diazinon & Toxicity
rd.n tiffctL_ ·~ J~R
Identify pollutants anticipated from the project site based on all proposed use(s) of the site (see
BMP Design Manual Appendix B.6):
Also a Receiving
Not Applicable to Anticipated from the Water Pollutant of
Pollutant the Project Site Project Site Concern
Sediment X
Nutrients X
Heavy Metals X
Oraanic Compounds X
Trash & Debris X
Oxygen Demanding X Substances
Oil & Grease X
Bacteria & Viruses X
Pesticides X
H dromodification Mana ement Re uirements
Do hydromodification management requirements apply (see Section 1.6 of the BMP Design
Manual)?
:J Yes, hydromodification management flow control structural BMPs required.
0 No, the project will discharge runoff directly to existing underground storm drains discharging
directly to water storage reservoirs, lakes, enclosed embayments, or the Pacific Ocean.
:J No, the project will discharge runoff directly to conveyance channels whose bed and bank are
concrete-lined all the way from the point of discharge to water storage reservoirs, lakes,
enclosed embayments, or the Pacific Ocean.
1 No, the project will discharge runoff directly to an area identified as appropriate for an
exemption by the WMM for the watershed in which the project resides.
Description I Additional Information (to be provided if a 'No' answer has been selected above):
No, the project will discharge runoff directly to existing underground storm drains
discharging directly to Agua Hedionda Creek/Lagoon.
ea n e ~
Based on the maps provided within the WMM, do potential critical coarse sediment yield areas
exist within the project drainage boundaries?
OYes
~ No, No critical coarse sediment yield areas to be protected based on WMM maps
If yes, have any of the optional analyses presented in Section 6.2 of the BMP Design Manual
been performed?
D 6.2.1 Verification of Geomorphic Landscape Units (GLUs) Onsite
D 6.2.2 Downstream Systems Sensitivity to Coarse Sediment
D 6 .2.3 Optional Additional Analysis of Potential Critical Coarse Sediment Yield Areas Onsite
O No optional analyses performed, the project will avoid critical coarse sediment yield areas
identified based on WMM maps
If optional analyses were performed, what is the final result?
D No critical coarse sediment yield areas to be protected based on verification of GLUs onsite
D Critical coarse sediment yield areas exist but additional analysis has determined that
protection is not required. Documentation attached in Attachment 8 of the SWQMP.
O Critical coarse sediment yield areas exist and require protection. The project will implement
management measures described in Sections 6.2.4 and 6.2.5 as applicable, and the areas
are identified on the SWQMP Exhibit.
Discussion I Additional Information:
·· ;:_"'·-;_·;;;'-~-flr.:, ,. . :_ ·--t~~:c ·-'·:;i<':~t;ii-~f.".).i _ OW_ 00 ro lO( _ OS - -ro ec U0011:,'":-~':·-. -_ " -. 1 • · :· '. _: , •• ·ft.!~,i.~: · ... "· ·· ···"····~····,F1· ·c· t· 1~· ··p tg ·· · t' R··· .. _ ·.~··!mF''·'··· .... , •.. ·, · · .. ,,.
.. ,.·· "This Secti~:foii:.i1J&'i1fred'ifhydr7frtiic11r.c!1Jroi rriiHa'tlem~nfte u r"em'i!rit$ ann~~/):.
List and describe point(s) of compliance (POCs) for flow control for hydromodification
management (see Section 6.3.1 ). For each POC, provide a POC identification name or number
correlating to the project's HMP Exhibit and a receiving channel identification name or number
correlating to the project's HMP Exhibit.
Has a geomorphic assessment been performed for the receiving channel(s)?
I No, the low flow threshold is 0.1Q2 (default low flow threshold)
, Yes, the result is the low flow threshold is 0.1 Q2
J Yes, the result is the low flow threshold is 0.3Q2
J Yes, the result is the low flow threshold is 0.5Q2
If a geomorphic assessment has been performed, provide title, date, and preparer:
Discussion I Additional Information: (optional)
" · Other Site Requirements and Constraints'i,j;i/1::"i\¥}"4',;.\,i'i•?-tt,'i·~,,'ilck •,,,
When applicable, list other site requirements or constraints that will influence storm water
management design, such as zoning requirements including setbacks and open space, or City
codes governing minimum street width, sidewalk construction, allowable pavement types, and
drainage requirements.
{_ City of
Carlsbad
STANDARD PROJECT
REQUIREMENT
CHECKLIST
E-36
I '"' ec< <ama Cac<sOaO Oreao C s<a<as
Project lnforrnation
Project ID MS 02-05
DWG No. or Bu1ld1ng Permit No.: 438-2A
/ Source Control BMPs --
Develoyment Services
Land Development Engineering
1635 Faraday Avenue
(760) 602-2750
www .carlsbadca.gov
__________ j
All development projects must implement source control BMPs SC-1 through SC-6 where applicable and feasible See
Chapter 4 and Appendix E.1 of the BMP Design Manual for information to implement source control BMPs shown in this
checklist.
Answer each category below pursuant to the following
• "Yes" means the project will implement the source control BMP as described in Chapter 4 and/or Appendix E.1 of the
Model BMP Design Manual. Discussion/justification is not required.
• "No" means the BMP is applicable to the project but it is not feasible to implement. Discussion/justification must be
provided Please add attachments if more space is needed.
• "N/A" means the BMP is not applicable at the project site because the project does not include the feature that is
addressed by the BMP (e g., the project has no outdoor materials storage areas). Discussion/justification may be
provided
,,;·~·-: _, ____ Sour_ce Control-Requirement '.>,';,.;,,;,
'y, ~t \/i. :;,..-. Applied?
SC-1 Prevention of Illicit Discharges into the MS4 IZl Yes D No D N/A
Discussion/justification if SC-1 not implemented:
SC-2 Storm Drain Stenciling or Signage IZl Yes D No D NIA
Discussion/justification if SC-2 not implemented
SC-3 Protect Outdoor Materials Storage Areas from Rainfall, Run-On, Runoff, and Wind D Yes D No IZl N/A Dispersal
Discussion/justification if SC-3 not implemented:
No outdoor material storage on site.
E-36 Page 1 of 4 Revised 03/16
Source Control Reauirement (continued) Annlied?
SC-4 Protect Materials Stored in Outdoor Work Areas from Rainfall, Run-On, Runoff, and D Yes 0 No D NIA Wind Dispersal
Discussion/justification if SC-4 not implemented:
SC-5 Protect Trash Storage Areas from Rainfall, Run-On, Runoff, and Wind Dispersal 0 Yes D No D NIA
Discussion/justification if SC-5 not implemented:
SC-6 Additional BMPs based on Potential Sources of Runoff Pollutants must answer for each source listed below and
identify additional BMPs. (See Table in Appendix E.1 of BMP Manual for quidance\.
IZI On-site storm drain inlets IZI Yes ONo D N/A
D Interior floor drains and elevator shaft sump pumps D Yes D No Ill NIA
IZI Interior parking garages IZIYes D No D N/A
D Need for future indoor & structural pest control D Yes D No 0 N/A
IZI Landscape/Outdoor Pesticide Use IZI Yes D No D N/A
D Pools, spas, ponds, decorative fountains. and other water features D Yes D No Ill N/A
D Food service D Yes D No IZI N/A
D Refuse areas D Yes D No IZI NIA
D Industrial processes D Yes D No 0 N/A
D Outdoor storage of equipment or materials OYes D No 0 N/A
D Vehicle and Equipment Cleaning OYes D No 0 N/A
D Vehicle/Equipment Repair and Maintenance D Yes D No Ill NIA
D Fuel Dispensing Areas D Yes ONo 0 N/A
D Loading Docks D Yes D No 0 NIA
D Fire Sprinkler Test Water OYes D No 0 NIA
D Miscellaneous Drain or Wash Water OYes D No 0 N/A
D Plazas, sidewalks, and parkino lots D Yes D No IZI N/A
For "Yes" answers, identify the additional BMP per Appendix E.1. Provide justification for "No" answers.
1. Onsite storm drain inlets have been designed per each lots and ,twas connected into proposed BMP; all inlets will be
signed "No dumpling' Flow to Bay"; 2 Interior parking garage will be installed floor drains that will be plumbed to sanitary
sewer directly; 3. Landscape Outdoor Use, all proposed landscaping area will be self-retaining landscaping area. maintain
landscaping using minimum or no pesticides
All 3 lots are residential. There are no plazas and parking lots designed and proposed. Sidewalk will be designed with
porous pavers per separate landscaping plans in the future.
BMP belongs to retention -infiltration INF-2 B1oretention per Appendix E 1
E-36 Page 2 of 4 Revised 03/16
I <"'f,}/: ' ~: ' ~\,lg'' · i,'·'·r,\r.uf• " ",, ' 'i - • ',· o"'" ''. . p . :. . •' c',C<i ,., ". : "
y '' ~ if' ' '-,,
¥,,: ,(-\f'.c,t~:f;ri~1Y:~,/(},a~:,}':'\~Y;,).'.:_-:0_~~;$J~~,-.}~.!I9" BM: s_:·:-ft· ~--_,_, ... , ''.: ,,, '~
All must site design BMPs SD-1 through SD-8 where applicable and feasible, See development projects implement
Chapter 4 and Appendix E.2 thru E,6 of the BMP Design Manual for information to implement site design BMPs shown in
this checklist.
Answer each category below pursuant to the following,
• "Yes" means the project will implement the site design BMPs as described in Chapter 4 and/or Appendix E,2 thru E,6 of
the Model BMP Design Manual. Discussion I justification is not required,
• "No" means the BMPs is applicable to the project but it is not feasible to implement. Discussion/justification must be
provided, Please add attachments if more space is needed.
• "N/A" means the BMPs is not applicable at the project site because the project does not include the feature that is
addressed by the BMPs (e,g,, the project site has no existing natural areas to conserve), Discussion/justification may be
orovided,
.. , ,,•···c,c>'·'-,_.1,',·_t'.L,.·,·:·,_,:,.a,l,-_;'•-'·c'S"J'-,.P'I,'',_,.-.. ,,.r:·-" ·,,;,,.,, -}-"',·'!'-"·. '--s"sV;,;?,'s'-·:°":~~~f·>·"' -·.)'''·"; \•,,'•~>~\,'•··-',.-_lit•~~ i~t~,~t~Pi>h~d~;,~fff, 0''sl~:,.t ... _·:0-r,:~;,?f_J:/;::· ... \-.s1,-::r'1-Jl'!J:t1 Otirce Colltro 'Requii"ement,ft -.-r · -·-.-~: .. ti"!",~(t.r',\~,,0~ _'ll>,">:~ .. :-:,:,,~;~ -.,_ ·· ,t·.'.:.·1:r·:._,, .-","-.t,.;J·"·"'"··· .. ,,.,:,.,._-, , .• , -·.:-_ .. ·.,,-,,,._.-,,~c:-;\;t.>'H,,·'t•I,.,-, ·,: .. ··c·,,,;-,,.·,-. .;:r;,-.. --,·-,·._, ··-··:',.,;
50-1 Maintain Natural Drainage Pathways and Hydroloaic Features ~ Yes 1 D No I D N/A
Discussion/justification if SD-1 not implemented:
50-2 Conserve Natural Areas, Soils, and Vegetation ~ Yes I ONo ID NIA
Discussion/justification if SD-2 not implemented:
50-3 Minimize lmoervious Area ~ Yes I D No I D N/A
Discussion(justification if SD-3 not implemented:
50-4 Minimize Soil Comoaction ~ Yes I ONo ID NIA
Discussion/justification if SD-4 not implemented:
5D-5 Impervious Area Dispersion ~ Yes I D No I D N/A
Discussion/justification if SD-5 not implemented:
I
C 00
. · ~ :' .. Source Control Renuirement (continued} ,-~-, . \ I ,,', C .. ,.·Aoolred?" .-..·,•, .•
SD-6 Runoff Collection I IZl Yes I D No ID NIA
Discussion/justification if SD-6 not implemented:
SD-7 Landscaping with Native or Drought Tolerant Species I IZl Yes I D No ! D NIA
Discussion/justification if SD-7 not implemented:
SD-8 Harvestina and Using Precioitation l D Yes I IZl No I D NIA
Discussion/justification if SD-8 not implemented:
Infeasible per worksheet 1-7
o..,,..,.. ,t ,..f ,1
SUMMARY OF PDP STRUCTURAL BMPS
PDP Structural BMPs
All PDPs must implement structural BMPs for storm water pollutant control (see Chapter 5 of
the BMP Design Manual). Selection of PDP structural BMPs for storm water pollutant control
must be based on the selection process described in Chapter 5. PDPs subject to
hydromodification management requirements must also implement structural BMPs for flow
control for hydromodification management (see Chapter 6 of the BMP Design Manual). Both
storm water pollutant control and flow control for hydromodification management can be
achieved within the same structural BMP(s).
PDP structural BMPs must be verified by the City at the completion of construction. This may
include requiring the project owner or project owner's representative to certify construction of
the structural BMPs (see Section 1.12 of the BMP Design Manual). PDP structural BMPs must
be maintained into perpetuity, and the City must confirm the maintenance (see Section 7 of the
BMP Design Manual).
Use this form to provide narrative description of the general strategy for structural BMP
implementation at the project site in the box below. Then complete the PDP structural BMP
summary information sheet for each structural BMP within the project (copy the BMP summary
information page as many times as needed to provide summary information for each individual
structural BMP).
Describe the general strategy for structural BMP implementation at the site. This information
must describe how the steps for selecting and designing storm water pollutant control BMPs
presented in Section 5.1 of the BMP Design Manual were followed, and the results (type of
BMPs selected). For projects requiring hydromodification flow control BMPs, indicate whether
pollutant control and flow control BMPs are integrated together or separate.
Self-mitigating or "De minimis" or self-retaining area on site: Yes, OMA Area DA3, 063, and DC2 consists
of driveways with steep slope where feasible, driveway will drain to basins via trench drain, which are
self-mitigating areas.
• Estimated total DCV after adjust runoff factor to account for site design BMPs:
BMP#1 for OMA Area DA 1 and DA2: 295 Cubic feet;
8MP#2 for OMA Area 081 and 082: 215 Cubic feet;
8MP#3 for OMA Area DC1 : 193 Cubic feet;
Each 8MP is connected with Cultec Storm Filter T-80 Water Quality Unit with a filtering
capacity of 438 gpm.
• Harvest and Use is considered infeasible.
Required demand for Harvest and Use/DCV: 25%
Estimated demand for Harvest and Use/Estimated Total DCV: 20%
• Full Infiltration on site: feasible, Infiltration 8MPs' details see Attachment 1 a-Pollutant Control 8MP
Design Worksheet
[Continue on next page as necessary.]
~ Structural BMP Summary Information
[Copy this page as needed to provide information for each individual proposed
· structural BMPl ·
Structural BMP ID No. BMP #1, #2, #3
DWG 48352 Sheet No. 1 11
Type of structural BMP
.. Retention by harvest and use (HU-1)
· Retention by infiltration basin (INF-1)
1 [2]Retention by bioretention (INF-2)
' _-Retention by permeable pavement (INF-3)
_ Partial retention by biofiltration with partial retention (PR-1)
__ Biofiltration (BF-1)
:: Flow-thru treatment control included as pre-treatment/forebay for an onsite retention or
biofiltration BMP (provide BMP type/description and indicate which onsite retention or
biofiltration BMP it serves in discussion section below)
:: Detention pond or vault for hydromodification management
= Other ( describe in discussion section below)
Purpose:
0 Pollutant control only
J Hydromodification control only
:: Combined pollutant control and hydromodification control
~ Pre-treatmentiforebay for another structural BMP
.. Other (describe in discussion section below)
Discussion (as needed): BMP #1, #2, and #3 are all bioretention basins. Their size vary
from 256 (16'Xl 6') to 196 (14'Xl 4') and 169 (13'Xl 3') Sqfts. See
attached WQMP site map for details.
Cultec Storm Filter T-80
Project Identification
Project Name: Carlsbad Oceanview Estates
PDP Structural BMPs
All PDPs must implement structural BMPs for storm water pollutant control (see Chapter 5 of the manual).
Selection of PDP structural BMPs for storm water pollutant control must be based on the selection process
described in Chapter 5. PDPs subject to hydromodification management requirements must also implement
structural BMPs for flow control for hydromodification management (see Chapter 6 of the manual). Both storm
water pollutant control and flow control for hydromodification management can be achieved within the same
structural BMP(s).
PDP structural BMPs must be verified by the local jurisdiction at the completion of construction. This may
include requiring the project owner or project owner's representative to certify construction of the structural
BMPs (see Section 1.12 of the manual). PDP structural BMPs must be maintained into perpetuity, and the local
jurisdiction must confirm the maintenance (see Section 7 of the manual).
Use this form to provide narrative description of the general strategy for structural BMP implementation at the
project site in the box below. Then complete the PDP structural BMP summary information sheet (page 3 of
this form) for each structural BMP within the project (copy the BMP summary information page as many times
as needed to provide summaty information for each individual structural BMP).
Describe the general strategy for structural BMP implementation at the site. This information must describe
how the steps for selecting and designing storm water pollutant control BMPs presented in Section 5.1 of the
manual were followed, and the results (type of BMPs selected). For projects requiring hydromodification flow
control BMPs, indicate whether pollutant control and flow control BMPs are integrated or separate.
BMP selection and design followed steps in Section 5.1 and are summarized below (supporting forms and
worksheets attached).
•' ~· ·-~ ~ -!~·~f ·': .,..~ iJ? Form 1-6 Pag~!, of,~, :·~:: ' ." ;~;i':~ .. ,.
,, •---4"~;)!1;.r~,!{\ • a .. ',' ... .· ... ~ :;f
Structural BMP Summary Information
(Copy this page as needed to provide information for each individual proposed structural BMP)
Structural BMP ID No. : INF-2
Construction Plan Sheet No.
Type of structural BMP:
Retention by bioretention aNF-2)
Individual lots with its drainage area drains to individual proposed bio-retention basins (total 3)
Cutec Strom filters are design within individual parcels with its drainage area too.
Purpose:
Pollutant control only
Who will certify construction of this BMP? HENRY OLIVIER & ILEANA VISCAL
Provide name and contact information for the party P.O. Box 9493
responsible to sign BMP verification forms if San Bernardino, CA 92427
required by the [City Engineer] (See Section 1.12 of Ph: (909) 880-1146
the manual)
Who will be the final owner of this BMP? HENRY OLMER & ILEANA VISCAL
P.O. Box 9493
San Bernardino, CA 92427
Ph: (909) 880-1146
Who will maintain this BMP into perpetuity? HENRY OLIVIER & ILEANA VISCAL
P.O. Box 9493
San Bernardino, CA 92427
Ph: (909) 880-1146
\Vhat is the funding mechanism for maintenance? 10, 000/year
ATTACHMENT 1
BACKUP FOR PDP POLLUTANT CONTROL BMPS
This is the cover sheet for Attachment 1.
Check which Items are Included behind this cover sheet:
Attachment Contents Checklist
Seauence
Attachment 1 a OMA Exhibit (Required) 01ncluded
See OMA Exhibit Checklist on the
back of this Attachment cover sheet.
(24"x36" Exhibit typically required)
Attachment 1 b Tabular Summary of DMAs Showing 01ncluded on OMA Exhibit in
OMA ID matching OMA Exhibit, OMA Attachment 1 a
Area, and OMA Type (Required)* r i Included as Attachment 1 b,
separate from OMA Exhibit
*Provide table in this Attachment OR
on OMA Exhibit in Attachment 1a
Attachment 1 c Form 1-7, Harvest and Use Feasibility 01ncluded
Screening Checklist (Required unless ONot included because the entire
the entire project will use infiltration project will use infiltration BMPs
BMPs)
Refer to Appendix B.3-1 of the BMP
Design Manual to complete Form 1-7.
Attachment 1 d Form 1-8, Categorization of Infiltration 01ncluded
Feasibility Condition (Required unless ONot included because the entire
the project will use harvest and use project will use harvest and use
BMPs) BMPs
Refer to Appendices C and D of the
BMP Design Manual to complete
Form 1-8.
Attachment 1 e Pollutant Control BMP Design 01ncluded
Worksheets I Calculations (Required)
Refer to Appendices B and E of the
BMP Design Manual for structural
pollutant control BMP design
guidelines
Use this checklist to ensure the required information has been included on the DMA
Exhibit:
The OMA Exhibit must identify:
0 Underlying hydrologic soil group
E]Approximate depth to groundwater
E]Existing natural hydrologic features (watercourses, seeps, springs, wetlands)
E]Critical coarse sediment yield areas to be protected (if present)
EJ Existing topography and impervious areas
[21Existing and proposed site drainage network and connections to drainage offsite
E]Proposed grading 0 Proposed impervious features
E]Proposed design features and surface treatments used to minimize imperviousness
E]Drainage management area (OMA) boundaries, OMA ID numbers, and OMA areas (square
footage or acreage), and OMA type (i.e., drains to BMP, self-retaining, or self-mitigating)
0 Structural BMPs (identify location and type of BMP)
1. Is there a demand for harvested water (check all that apply) at the project site that is reliably present during
the wet season?
Toilet and urinal flushing
Landscape irrigation
Other: _____ _
2. If there is a demand; estimate the anticipated average wet season demand over a period of 36 hours. Guidance
for planning level demand calculations for toilet/ urinal flushing and landscape irrigation is provided in Section
B.3.2.
Estimated Toilet and Urinal Flushing fo r 36 hours is: 1.24* 20*1.5=37 cubic feet
(residential total use per resident per day or 24 hours is 9.3 gallon or 1.24 cubic feet, estimated users on site is
20)
Estimated Landscape Irrigation Demand is : 196*0.60=124 cubic feet
(Assuming Hydrozone-Moderate Planter Water Use, 36 Hour Planning Level, demand is at 1470 gallon or 196
cubic feet/ acre)
Total D emand: 37+124 =161 for 36 hours or 107 for 24 hours
3. Calculate the D CV using worksheet B-2.1.
739 cubic feet for 24 hours
3a. Is the 36 hour demand greater
than or equal to the D CV?
Yes I No c::>
~
Harvest and use appears to be
feasible. Conduct more detailed
evaluation and sizing calculations
to confirm that D CV can be used
at an adequate rate to meet
drawdown criteria.
3b. Is the 36 hour demand greater than
0.25DCV but less than the full DCV?
Yes / Noc>
i
Harvest and use may be feasible. Conduct
more detailed evaluation and sizing
calculations to determine feasibility.
Harvest and use may only be able to be
used for a portion of the site, or
(optionally) the storage may need to be
upsized to meet long term capture targets
while draining in longer than 36 hours.
Is harvest and use feasible based on further evaluation?
Yes, refer to Appendix E to select and size harvest and use BMPs.
No, select alternate BMPs.
3c. Is the 36 hour demand
less than 0.25DCV?
Yes
Harvest and use is
considered to be
infeasible.
. . .
(,. ~ .
. . ' . ' . ~ .
• • • ' ,' '· ;:... ..... • ... ,.. • ' •• • : ·~ '. • ... • •• I,,;<(,(. • .-'-'I•' l ; If
Part 1 -Full Infiltration Feasibility Screening Criteria
Would infiltration of the full design volume be feasible from a physical perspective without any undesirable
conse uences that cannot be rcasonabl miti ated?
Criteria Screening Question Yes No
Is the estimated reliable infiltration rate below proposed facility
locations greater than 0.5 inches per hour? The response co this
Screening Question shall be based on a comprehensive evaluation of
the faccors presented in Appendix C.2 and Appendi., D.
Provide basis: per soil report, the infiltration rate is 1.2 inches/hour greater than 0.5 inches per hour.
The double ring mfiltration tesl data has been attached.
Summarize findings of srudies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative
discussion of srudy/ data source applicability.
2
Can infiltration greater than 0.5 inches per hour be allowed
without increasing risk of geotechnical hazards (slope stability,
groundwater mounding, utilities, or other factors) that cannot be
mitigated to an acceptable level? The response to this Screening
Q uestion shall be based on a comprehensive evaluation of the factors
presented in AppendLx C.2.
Provide basis: per soil report, existing soil has infiltration greater than 0.5 inches per hour and has no increasing risk of
geotecbrucaJ hazards (slope stability, groundwater mounding, utilities, or other factors.
Summarize findings of studies; provide reference to srudics, calculations, maps, data sources, etc. Provide narrative
discussion of stud , / data source a licabili .
"": ..... •• ----.,..,-;':'"' .... --~--•'""7P''"'· .--',l":,r' ..... --~. _..,. .. --~-.~ ·---· •• -~~~· ·1
· · t11tsfr, ·,d;';,~i~-': 1 ,,, ,1 i
Criteria
3
;,, " ; Ar : ,~· .. -, • -i
Screening Question
Can infiltration greater than 0.5 inches per hour be allowed
without increasing risk of groundwater contamination (shallow
water table, storm water pollutants or other factors) that cannot
be mitigated to an acceptable level? The response to this Screening
Question shall be based on a comprehensive evaluation of the factors
presented in Appendix C.3.
Yes No
Provide basis: per soil report, existing soil has infiltration greater than 0.5 inches per hour and has no increasing risk of
groundwater contamination (shallow water table, storm water pollutants or other factors) that cannot be mitigated to an
acceptable level
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative
discussion of study/data source applicability.
4
Can infiltration greater than 0.5 inches per hour be allowed
without causing potential water balance issues such as change of
seasonality of ephemeral streams or increased discharge of
contaminated groundwater to surface waters? The response to this
Screening Question shall be based on a comprehensive evaluation of
the factors presented in Appendix C.3.
Provide basis: per soil report, existing soil has infiltration greater than 0.5 inches per hour and do not cause potential
water balance issues such as change of seasonality of ephemeral streams or increased discharge of contaminated
groundwater to surface waters
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative
discussion of study/ data source applicability.
Part 1
Result
*
If all answers to rows 1 - 4 are ''Yes" a full infiltration design is potentially feasible. The
feasibility screening category is Full Infiltration
If any answer from row 1-4 is ''No", infiltration may be possible to some extent but
would not generally be feasible or desirable to achieve a "full infiltration" design.
Proceed to Part 2
Full Infiltration
lJ7 ;:.!"'--· -~-~-........ ~ ---, ....... _,~-----;~-:~~~~-.,...---::-----·· -. ,~---,-..... -----~ -. ,.
' . . l_ ~(..j {t!.-(.J~'f;'h_fo.~ \ -sinl. J)l~tj~~fn(il.(u-dito1.1 H...-:ic .. :
' ' \\'u)J:4.1•.l,{~: .t'!t•,~tu ~ -.!
r •v• 1 ' ......... ~., . .::;.. __ ; ' . ~ . .. _ ...... ··-· .. ~ ... -~ ' ·-... ..: .... .......... , ··-"'·-. -.... M,,,.-4._._kf...:.. ..... <..,..& •• ..... .
Assigned Factor Product (p) p
Factor Category Factor Description =wxv
Weight (w) Value (v)
Soil assessment methods 0.25 1 0.25
Predominant soil texture 0.25 1 0.25
Suitability Site soil variability 0.25 1 0.25
A Assessment Depth to groundwater / impervious
layer 0.25 1 0.25
Suitability Assessment Safety Factor, SA = I:p 1
Level of pretreatment/
expected sediment loads 0.5 1 0.5
Redundancy/ resiliency 0.25 3 0.75 B Design
Compaction during construction 0.25 2 0.5
Design Safety Factor, SB = Lp 2.75
Combined Safety Factor, Stow= SA x SB 2.75
Observed Infiltration Rate, inch/hr, Kobservcd 1.2
(corrected for test-specific bias)
Design Infiltration Rate, in/hr, Klesign = Kobscrvcd / Stota1 0.44
'l ~upi;,o~'Data ~;; I ' . ·' : • '-T:;'.1',," ~ffij~ ., . t._,; . ·/; -· .. ;x-~ .1~? ·, ,. --·· "
,<; .;%.' f;, # .. ' ''. . · . ~:e!;;. -,, .L'c ,~ .. f,,'""
Briefly describe infiltration test and provide reference to test forms:
Todd R. Wyland, Civi I Engineer
PO Box 293622 Phelan, CA 92329
Phone: (760) 475-7371 email: toddinwrightwood@yahoo.com
Slope Stability Analyses * Percolation & Compaction Testing * Soil Reports
September 14, 2015
Mr. Henry Olivier Project No: 1471
4370 Hallmark Drive, Suite 101
San Bernardino, CA 92407
SUBJECT: Infiltration Testing
NE Comer of Hoover & Adams Street
Carlsbad, California
REFERENCES: 1. Response to City of Carlsbad Geotechnical Plan Check Comments
Prepared By Todd Wyland, Project No: 147G, July 24, 2015
Dear Mr. Olivier:
2. Update to Preliminary Geotechnical Engineering Study Report
Prepared By Todd Wyland, Project No: 147G, April 10, 2014
3. Preliminary Geotechnical Engineering Study Report
Henry's Lots Located at NE Corner of Hoover & Adams Street
Carlsbad, California, Report Dated June 22, 2001
Prepared By Geotechnical Solutions, Inc., Project No. G-1845-06
As requested, I have performed an infiltration test on each of the three subject parcels, at the
planned infiltration trench location and depth. The tests were performed using ELE Model 25-
0660 double ring infiltrometers with Mariotte tubes to maintain constant head according to
ASTM 03385.
The purpose of the infiltration testing was to provide appropriate infiltration test rate data for
design and to determine if the proposed infiltration trench locations are geotechnically feasible.
Infiltration Testing
Car1sbad Ocean Estates
Procedure:
September 14, 2015
A backhoe was utilized to excavate three test trenches, approximately 10 feet deep. The
exposed materials and conditions were confirmed to be as described in Reference No. 3.
The rings were carefully set, then presoaked by filling the rings with water to at least 8 inches.
Based upon the measured drop over two 30-minute time intervals during presoak, the testing
proceeded with 20-minute time intervals. Volume determinations and height readings were in
centimeters and converted to inches in the infiltration rate calculations. The test pits were
backfilled upon completion.
Results:
The test results are included on the attached Infiltration Test Data Sheets. The resulting
Infiltration rates vs. time for each inner ring are plotted on the attached Chart. The most
conservative stabilized infiltration test rate was 1.2 inches/hour.
Conclusions:
Based upon the sandstone conditions encountered and the results of the subject infiltration
tests, it is my opinion that the proposed infiltration trenches are feasible from a geotechnical
standpoint. ~IL... S1..v~<E r ·,A-"<r • 1 t.h "-'IA --:-11.,.:;·;, .. .,.:t. 15 .M,":'\. ... :,.-1 iVt ,·,>•-,_,
S..J (. i..t .,. 5 v r.c "'-r" ""-11<'\P c..l'v1, -.JI J ) "" '"" t. tt i ~ i>1..i ,..\.t A~ n c.~ """'""''n .,,., :
Groundwater or evidence of previous shallow groundwater was not encountered and the depth
to groundwater beneath the Site was estimated to be about 60 feet (sea level). Therefore,
both the depth of permeable soil beneath the proposed infiltration trenches and the separation
to the historical high water depth exceed the standard minimums of 5 and 10 feet, respectively.
The proposed infiltration trenches will not adversely affect the adjacent properties.
I trust that this is sufficient for your needs at this time. If there any questions, please do not
hesitate to contact me.
Respectfully submitted,
~
Todd R. Wyland, RCE 60618
Attachments: Test Location Map
Infiltration Test Data Sheets (3)
Chart
-EAN ESTATES
CARLSBAD OC d Ada ms Streets f Hoover an NE Corner o b d California Carls a ,
Test Location Map
DOUBLE RING INFILTROMETER TEST DATA (ASTM D 3385) Test No: IT-1 (sheet 1 of 1) ~
Ring Data Marriotte Tube
CARLSBAD OCEAN ESTATES Water
NE Corner of Hoover and Adams Streets Area, Ar Depth No. Vol., V,
Carlsbad, California (cm 2} (in) (cc/cm)
Inner Ring (12" ID): 729.7 4.5 1 (3,000 cc) 53.52
Test By: Todd Wyland I uses Class: (SP-SM) Annular Space (24" outer ring): 2189.0 4.5 2 (10,000 cc} 167.53
Depth to Water : 60' (approx) Penetration of Rings into Soil (in): Inner: 3 Outer: 3
Date of Test: 9/2/2015 I Water Source: Tank Filled From Fire Hydrant (water warmer than ground)
Constant Head Maintanied by Using: Marriotte Tubes
Test Location: Parcel 3
T0 st Elevation· 60 ft (approx) -
Time Time t.T (min)
Interval (hr:min) Total
1-Start 9:00 20
End 9:20 20
2 -Start 9:20 20
End '-9:40 40
3 -Start 9:40 20
End 10:00 60
4 -Start 10:00 20
End 10:20 80
5 -Start 10:20 20
End 10:40 100
6 -Start 10:45 20
End 11:05 120
7 -Start 11:05 20
End 11:25 140
8 -Start 11:25 20
End 11:45 160
9 -Start 11:45 20
End 12:05 180
0 -Start 12:10 30
End 12:40 210
,1-Start 12:40 30
End 1:10 240
,2 -Start 1:10 15
End 1:25 255
Inner Ring
Elev. H t.H Qf*
(cm) (cm) (cc)
58.3 8.2
50.1 438.9
50.1 9.8
40.3 524.5
40.3 10.7
29.6 572.7
29.6 12.9
16.7 690.4
16.7 13.2
3.5 706.5
58.3 13.4
44.9 717.2
44.9 14.1
30.8 754.6
30.8 14.2
16.6 760.0
16.6 14.1
2.5 754.6
58.3 21.7
36.6 1161.4
36.6 21.7
14.9 1161.4
14.9 10.8
4.1 578.0
* Flow, Qf = l'.H x Vr
•• Infiltration Rate, I = {Qf/ Ar)/ l'.t
Annular Ring Infiltration Rate
1••
Elev. H t.H Qf* Inner Outer
(cm) (cm) (cc) in/hr in/hr
58.3 8.5 0.71 0.77
49.8 1424.0
49.8 10.0 0.85 0.90
39.8 1675.3
39.8 10.5 0.93 0.95
29.3 1759.1
29.3 13.1 1.12 1.18
16.2 2194.6
16.2 13.3 1.14 1.20
2.9 2228.1
58.3 13.8 1.16 1.25
44.5 2311.9
44.5 14.4 1.22 1.30
30.1 2412.4
30.1 14.3 1.23 1.29
15.8 2395.7
15.8 14.1 1.22 1.27
1.7 2362.2
58.3 22.1 1.25 1.33
36.2 3702.4
36.2 21.9 1.25 1.32
14.3 3668.9
14.3 10.7
1792.6 1.25 1.29 3.6
Remarks
Cool, Partly Cloudy
No Wind
Warm and Sunny
Refilled Tubes
Refilled Tubes
DOUBLE RING INFILTROMETER TEST DATA (ASTM D 3385) Test No: IT-2 (sheet 1 of 1)
Ring Data Marriotte Tube
CARLSBAD OCEAN ESTATES Water
NE Corner of Hoover and Adams Streets Area, A, Depth No. Vol., V,
Carlsbad, California (cm 1) {in) (cc/cm)
Inner Ring (12" ID): 729.7 5 1 (3,000 cc) 53.52
Test By: Todd Wyland I USCS Class: (SP-SM) /\nnular Space (24"10 outer ring): 2189 5 2 (10,000 cc) 167.53
Depth to Water : 60' (approx)! Penetration of Rings into Soil (in): Inner: 3 Outer: 3
Date of Test: 9/2/2015 I Water Source: Tank Filled From Fire Hydrant (water warmer than ground)
Constant Head Maintanied by Using: Marriotte Tubes
Test Location: Parcel 2
Test Elevation-57 ft (approx)
Time Time LIT (min)
Interval (hr:min) Total
1-Start 10:10 20
End 10:30 20
2 -Start 10:30 20
End 10:50 40
:s-Start 10:50 20
End 11:10 60
4 -Start 11:10 20
End 11:30 80
5 -Start 11:30 20
End 11:50 100
6 -Start 11:55 20
End 12:15 120
7 -Start 12:15 20
End 12:35 140
8 -Start 12:35 20
End 12:55 160
9 -Start 12:55 20
End 1:15 180
0 -Start 1:20 30
End 1:50 210
1-Start 1:50 30
End 2:20 240
.L -Start 2:20 15
End 2:35 255
Inner Ring
Elev. H LIH Qf*
(cm) (cm) (cc)
58.3 7.6
50.7 406.8
50.7 9.6
41.1 513.8
41.1 10.S
30.6 562.0
30.6 11.4
19.2 610.1
19.2 12.2
7.0 652.9
58.3 13.1
45.2 701.1
45.2 13.6
31.6 727.9
31.6 13.8
17.8 738.6
17.8 13.8
4.0 738.6
58.3 20.8
37.5 1113.2
37.5 21.0
16.5 1123.9
16.5 10.4
6.1 556.6
* Flow, Qf = llH x Vr
** Infiltration Rate, I= (Qf/Ar)/llt
Annular Ring Infiltration
c~•• I**
Elev. H LIH Qf* Inner Outer
(cm) (cm) (cc) in/hr in/hr
58.3 7.9 0.66 0.71
50.4 1323.5
50.4 9.6 0.83 0.87
40.8 1608.3
40.8 10.3 0.91 0.93
30.5 1725.6
30.5 11.4 0.99 1.03
19.1 1909.8
19.1 12.3 1.06 1.11
6.8 2060.6
58.3 12.7 1.13 1.15
45.6 2127.6
45.6 13.4 1.18 1.21
32.2 2244.9
32.2 13.5 1.20 1.22
18.7 2261.7
18.7 13.6 1.20 1.23
5.1 2278.4
58.3 20.3 1.20 1.22
38.0 3400.9
38.0 20.5 1.21 1.24
17.5 3434.4
17.S 10.2 1.20 1.23
7.3 1708.8
Remarks
Warm and Sunny
No Wind
Refilled Tubes
Refilled Tubes
J '"IQUBLE RING INFILTROMETER TEST DATA {ASTM D 3385) Test No: IT-3 (sheet 1 of 1)
Ring Data Marriotte Tube
CARLSBAD OCEAN ESTATES Area, Water
NE Corner of Hoover and Adams Streets A, Depth No. Vol., V,
Carlsbad, CA (cm2) (in) (cc/cm)
Inner Ring (12" ID): 729.7 4.5 1 (3,000 cc) 53.52
Test By: Todd Wyland 1 uses Class: (SP-SM) nnular Space (24"1D outer ring): 2189 4.5 2 (10,000 cc) 167.53
Depth to Water : 60' (approxj Penetration of Rings into Soil (in): Inner: 2.5 Outer: 2.5
Date of Test: 9/2/2015 I Water Source: Tank Filled From Fire Hydrant (water warmer than ground)
Constant Head Maintanied by Using: Marriotte Tubes
Test Location: Parcel 1
Test Elevation· 61 ft (approx)
Time Time LIT (min)
Interval lhr:minl Total
1 -Start 1:45 20
End 2:05 20
2-Start 2:05 20
End 2:25 40
Start 2:25 20
End 2:45 60
4-Start 2:45 20
End 3:05 80
5 -Start 3:05 20
End 3:25 100
6-Start 3:30 20
End 3:50 120
7 -Start 3:50 20
End 4:10 140
8-Start 4:10 20
End 4:30 160
9-Start 4:30 20
End 4:50 180
0-Start 4:SS 30
End 5:25 210
Inner Ring
Elev. H IIH Qf*
(cm) (cm) (cc)
58.3 8.5
49.8 454.9
49.8 10.3
39.5 551.3
39.5 11.5
28.0 615.5
28.0 12.3
15.7 658.3
15.7 13.2
2.5 706.5
58.3 13.8
44.5 738.6
44.5 14.6
29.9 781.4
29.9 14.7
15.2 786.7
15.2 14.8
0.4 792.1
58.3 23.1
35.2 1236.3
* Flow, Qf = AH x Vr
•• Infiltration Rate, I= (Qf/Ar)/At
Annular Ring Infiltration
n_.a. ... I**
Elev. H IIH Qf* Inner Outer
(cm) (cm) (cc) in/hr in/hr
58.3 8.6 0.74 0.78 49.7 1440.8
49.7 10.2 0.89 0.92 39.5 1708.8
39.5 11.4
28.1 1909.8 1.00 1.03
28.1 12.3 1.07 1.11 15.8 2060.6
15.8 12.9 1.14 1.17 2.9 2161.1
58.3 14.0 1.20 1.27 44.3 2345.4
44.3 14.7 1.26 1.33 29.6 2462.7
29.6 14.6 1.27 1.32 15.0 2445.9
15.0 14.8 1.28 1.34 0.2 2479.4
58.3 22.5 1.33 1.36 35.8 3769.4
Remarks
Warm and Sunny
No Wind
Refilled Tubes
Refilled Tubes
.1 -Start 5:25 30 35.2 22.8 35.8 22.7 1.32 1.37 End 5:55 240 12.4 1220.3 13.1 3802.9
2 -Start 5:55 15 12.4 11.4 13.1 11.3 1.32 1.36 End 6:10 255 1.0 610.1 1.8 1893.1
1.4
1.2
1
.... 0.8 .c .......
C: 0.6
0.4
0.2
0
-..
CARLSBAD OCEAN ESTATES
IIIE Carner of Hoover and Adams Streets
Carlsbad, CA
lnflitration Rate vs. Time
~IT-11
-8-IT-2
-ft-lT-3 l -, ---,,__, . -
20 40 60 80 100 120 140 160 180 210 240 255
Time (min)
\l: Hen;y Oh··1ier
43 7 0 rlailrnarK Drive Suite 'C •
San Bernardino. CA 9240.,.
SUBJECT Update to Preliminary Geotechntcal Eng:neering Study Report
REFERENCE. Preliminary Geotechnical Engineering Study Report
Henry's Lots
Located at NE Corner of Hoover & Adams Street
Carlsbad, California
Report Dated June 22. 2001
Prepared By Geotechrncal Solutions, Inc
Project No. G-1845-06
Dear Mr. Olivier:
As requested, i have performed an update to the above referenced report prepared for
the subject site. The update was needed due to the passage of time since the report
date. The purpose of this update was to determine if the findings, conclusions, and
recommendations of the referenced report remain valid for the subject project and to
provide additional recommendations, if needed
This update was based upon review of the referenced report and current site conditions
with respect to the planned intended use and the current standards of practice.
Since the time of the referenced report. the site conditions and intended use remain
essentially unchanged.
Based upon my review, it is my opinion that the findings, conclusions, and
recommendations of the referenced report remain valid and are applicable to the
currently proposed project with the following additional recommendations ( due to Code
changes)
,,.i:i1~c~2 r') P'."~:1m1nc:r"" ,Sew~~.::1n1cc.; .::~c;1teer!r19 ,Sr,JC'1 '<~,:;,~,~,·
'~f: ·:',1r"er ;f 1../.;r,-,,z,~ ~ ,,J.,jc("ls 5t,".zi · ,'.;;1r!sbaC ·.:::c::: r ">r''J:
Additional Recommendations
>··,:i,,e,::t'~c :.:.t';:,
-":;r,( 1:: ,:'.'...', ~
'"r.a .site coordinates (N33 ':42 7 deg \J'J~i7 3299 1j3g arid the USG3 vveos;-te
Ea;thq,.Jake Ground ~Actio,-: Pa.~3..r,eter Ca/cuTato.'" '·l'tas ,Jr1itzed to deterrr\r.,s, :::.irre::·.
seisrnic ground rnot10:: val!....es /1..\SC,';E 7-10 Sta.,-,,:;3.~c:11 .~, sopv of the '.JSGS Oes:g··
Mao3 Detailed Report ,s attacned
Tr,e a:tached seismic desigc: .,3:ues ';vere Llt:.iizej tJ pr0·,1Ce salsm;c lateral ea,i:-,
pressures for retaining walls, ,f required v'/ith respect to subterranean walls. the
additional seismic force 1s applicable for cases. such as walk-out basements. where
there is a significant difference (imbalance) in retained height on opposite sides of e
structure
Using K" = S0 s/2 5 and Sos = 0. 756g the Seismic Lateral Force (plf) to add to the
Active pressure is the resultant of an inverted triangular distribution of 14H acting at
0.6H from the bottom.
For braced conditions, the Peak Ground Accete;ation 0.448g was reduced by 1/3 for a
Seismic Lateral Force (plf) determined by the resultant of an inverted triangular
distribution of 18H acting at 0.6H, to be added to the 'at-rest" earth pressure and any
surcharge loadings.
This Update Letter should be attached to and should be considered as an integral part
of the referenced report.
I trust that this Update Letter is sufficient for your needs at this time If there are any
questions regarding this letter, please contact me at your convenience.
Respectfully submitted.
Attachment: USGS Design Maps Detailed Report
Distribution: Client (5)
Cakulated Runoff Codlicient Worksheet
CARLSBAD OCEAN ESTATES, CARLSBAD, CALIFORNIA
0.14 4,978 0.11 0 00 0 0 11
DA2 0.48 11,304 0 26 0.12 5,084 0 14 6220
DA3 0.32 2,252 0.05 0.01 533 0 04 1719
DB1 0.14 6,132 0.14 0.00 0 0 14 6132
DB2 0.40 9,129 0.21 0.07 3,076 0 14 6053
DB3 0.56 2,308 0.05 0 03 1,285 0 02 1023
DC1 0 39 10,415 0.24 0.08 3,384 0 16 7031
DC2 0.60 1,432 0 03 0.02 867 0.01 565
Total 0.38 47,950 1 10 0.33 14,229 0.77 33721
0.9 Natura.!(:\ Soil) 0.1 ~
Natural (B Soil) 0.14 ~ Site Soil Group
Natural (C Soil) 0.23
0.9
Unit Pavers 0.9
03 Natural (D Soil) I 0.3
Cobbles or Crushed A 0.3
.\mcnJcJ, 1\lukhcJ Soib ur l.auJscapc 0.1
Compacted Soil ( e.g., unpaved parking) 0.3
DCV Caculation
CARLSBAD OCEAN ESTATES, CARLSBAD, CALIFORNIA
2 i\= 0.3737833 acres
3 IArea weighted runoff factor (estimate using ;\ppendix !3.1.1 and 13.2.1} C= IJ.38 unitlcss
4 I Street trees volume reduction TCV= (J cubic-feet
S I Rain barrels volume reducuon RCV= u cubic-feet
6 I Calculate DCV = (3630 x C x d x ;\) -TCV -RCV DCV= 294 cubic-feet
DMA Runoff Coefficient Drainage Area (acres) c•A
DA1 0.14 0.11 0.02
DA2 048 0.26 0 13
Total Drainage Area 0.373783287
Weighted Runoff Factor 0.38
Infiltration BMP Sizing-BMP#l
CARLSBAD OCEAN ESTATES, CARLSBAD, CALIFORNIA
,\:/(i]j:q1
DCV (Worksheet B-2.1) DCV=
2 l·:~timated desi~n infiltration rate (\X-'orkshee~_p.5-1} J(.lnoi.-'11::::
3 Available BMP surface area 1\1\\l!':::::
4 . \ verage effective depth in the BMP footprint (DCV / 1\i,,,w) l)"
5 Drawdown time, T (D"' *12/K,1e,,,,) T= 31.6lhours
6 Provide alternative calculation of dra\vdo\vn time-<-if needed.
DCV Caculation
CARLSBAD OCEAN ESTATES, CARLSBAD, CALIFORNIA
35th
Area tributary to BMP (s .-\= IJ .loU.l444 acres
3 Area weighted runoff factor {estimate usin endix B.1.1 and 13.2. Q C= 11.29 unitless
4 !Street trees volume reduction TCV= ll cubic-feet
5 I Rain barrels volume reduction RC\'= 0 cubic-feet
6 I Calculate DCV = (3630 x C x d x A) -TCV -RCV DCV= 213 cubic-feet
DMA Runoff Coefficient Drainage Area (acres) c•A
DB1 0.14 0.14 0.02
DB2 0.39 0.21 0.08
Total Drainage Area 0.350
Weighted Runoff Factor 0.29
Infiltration BMP Sizing-BMP#2
CARLSBAD OCEAN ESTATES, CARLSBAD, CALIFORNIA
DCV (Worksheet B-2.1)
2 Estimated design infiltration rate (Worksheet D.5-1) l(_k"y;n=
3 i\ vailable BMP surface area :\.B.\11'=
4 ,\ verage effective depth in the BMP footprint (DCV / A11,w) l)a, -11 feet
5 Drawdown time, T ~D·"!'. *_12/J<..k,.,,) T= :29.8[hours
6 I Provide alternative calculation of drawdown time! if needed.
DCV Caculation
CARLSBAD OCEAN ESTATES, CARLSBAD, CALIFORNIA
A= 0.2390955 acres
3 Appendix B.1.1 and B.2.12 C= 0.39 unitless
4 I Street trees volume reduction TCV= 0 cubic-feet
5 I Rain barrels volume reduction RCV= () cubic-feet
6 I Calculate DCV = (3630 x C x d x A) -TCV -RCV DC:V= 193 cubic-feet
DMA Runoff Coefficient Drainage Area (acres) c•A
DC1 0.39 0.24 0.09
Total Drainage Area 0.2390955
Weighted Runoff Factor 0.39
infiltration BMP Sizing -BMP #3
CARLSBAD OCEAN ESTATES, CARLSBAD, CALIFORNIA
DCV (Worksheet B-2.1)
7 Esumated design infiltration rate (\Vorksheet D.5-1) Kun,Y,t,=
3 Available BMP surface area ~.\H,\ll'=
4 Avera_g_e effective depth in the BMP footpnnt (DCV /A"'",) Dav 11 feet
5 Drawdown time, T (D", *12/K,b,e,) T= 31.3lhours
6 I Provide alternative calculation of drawdown t11ne2. if needed.
I
7
3.
STORMWATE:R POLLUTANT SOURCE:SISOURCE: CONTROL CHE!CKLIST
How to use this worksheet (also see instructions in Section G of the WQMP Template):
H.J.:v1t·w (:olu11111 1 aHJ 1denufy \V hu..:h uf thi.:::ic potential ::.uun.:t:s uf ~tun1nvater pollutant::, appl_\ to _\ uur -.ltc. Clit·ch L",IL l I b()_'i.. t11,H ,1pphc:-,
H..cv1c\\' CulL111111 2 auJ irn.:urpurate all uf tlu.· l:urre::ipunding apphcablt: H!\1Ps tn your \\'(,21\IP Fxhibit
lteview (~ulu11n1s 3 au<l 4 <uu.l incurpurale all uf the corresponding appltcablt.: pennanent controls and upcrat1unal 1$1\ I]>-; 111 _1 our \\ ·lJ l\l J> L\t· rht·
furn1at sho,vn iu · 1 'able (~. l rJn pa~e 2~) of this \\'(.21\tP ·rcrnplate. l )escribe your specific H f\11\, in an acco111pa11y111g narrau, c. ,ind e:-.Jil.un :1111
::,pec1al cunditiuus ur ::iituatiuus that n:l1uue<l u11Utti11g .Htvll's or substitutin)!, alttrnatlve Hiv1Ps for those shu\\"11 here
. ----------------
IF THE!SE: SOURCE:S WILL BE: ••• THE!N YOUR WQMP SHOULD INCLUDE: THE!SE: SOURCE: CONTROL BMPs, AS APPLICABLE: ON THE PROJE!CT SITE! •••
-~ -----------------·--------
1 2 3 4
_J
Potential Sources of Permanent Controls-Show on Permanent Controls-List in WQMP Operational BMPs-lnclude in WQMI
Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative
0 A, On-site sturu1 dr:.tiu 0 Lol'.atiuns of inlets. 0 Mark all inlets with the ,vords 0 l\'1ai11tain anJ periudicalh rep;.lint ur
inlets ''Only Rain D0\v11 the Stonn n..-plal."t' inlet 1uarkings.
Drain" or si1nilar. Cat1.:h Basin 0 Provide stornl\vatt'r pollution Markerti 1nay be available fru1n the
Rivt'rside County Flood Control prevention infonnatiuu to llt'\V sitt'
and Water Conservation Distri1.:t, O\vuers, lcsset's, or operator».
call 951.955.1200 to verit)1• 0 See applicable operational BMPs in
Fal.'t Sheet SC-4.t, ''Drainagt' Syste1n
l\.'1aintenant.:e," in the CASQA
Stonuwater Quality I-L.1.ndbouks at
\V\\\\·.t.:ab1uphandbooks.con1
0 I nt.:hn.le the fullo,ving in least'
,1gree1neuts: "Tenant shall not allo\\
anyone tu dis4:harge anything to sturn1
drains or to store or deposit materials
so as lo l.·re,ue a potential discharge tu
stonu drains."
--.
0 B. interior tluor dr:.tins 0 State that interior floor drains and 0 Inspect and 1uaintai11 drains to preven
and elt:vator shaft sump elev.i.tor shaft sump pumps will be blockages and overt1o\\'.
pu1nps plumbed to sanitary se\\'er.
--~ -------·-·--· ·---··· ----··------' 0 C, Interior p.i.rking 0 St.th~ th:.tt parking garage floor 0 Inspect and n1aintai11 drains tu prt'Vt'tll
garages drains will be plu1nbed to the blol.·kages and o\'t'rtlu\\'.
sanitary st'wer.
---------· --·---··-. --.--~ -------
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
--------~------I
IF THESE SOURCES WILL BE I
ON THE PROJECT SITE •.. ••• THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs, AS APPLICABLE I . ---------~--~~--~--. __ J
1 2 3 4
Potential Source5 of Permanent Controls-Show on Permanent Controls-List in WQMP Operational BMPs-lnclude in WQMP '
Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative !
0 D1. Need fur future 0 Note building design features that 0 Provide Integrated Pest ~lanage1ncnt
indoor & stru(.'.tural pest discourage entry of pests. infonnation tu o,vners, lt:·ssees, aud
control operators.
0 02. Landscape/ 0 Show lol:.ttiuus of native trees or State that final landscape plans ,vill 0 Maintain la1ulsL:aping using mininuun
I Outdoor Pesticide Use art'as of shrubs and ground 1,;over to aci:01nplish all of the following. or nu pt'sticides.
be undisturbed and retained. 0 Preserve existing native trees, [Z] See applicable operational B1\1Ps in
0 Shuw self~retaining landscape shrubs, and ground 1.:uver tu the "What, ou should kno\\ I
an:as, if any. maximutn extent possible. frH" ..... Landscape and Gardening" ,11
I
0 0 ht1p 1L·!luud.1Jrµ -;1un11\\':llLT hrror.1 ' Shu,v stormwater treatment and Design landscaping to n1ini1nize 1 l \ pl·rlink ITfl:rcnL·e nul ~ .did. I
hydrograph modifi1.:ation irrigation and runoff, to protnote
mauage111e11t BMPs. (See surface infiltration \\"here Provide lPJ\1 iufonuation tune,,-i
instrul'.tiuns in Chapter 3, Step 5 appropriate, and to 1nini1nize the [Z] o,vners, lessees and operators.
aud guidance in Chapter 5.) use of fertilizers and pesticides that
I can contribute tu storm,vater
0 pollution.
I
Wlu:re landscaped areas an: used tu
retain or detain stunnwater, specif\
plants that are tolerant uf saturated
0 suil conditions.
Consider using pest-resistant
0 plants, espet.::ially adjacent to
hardscape.
Tu insure successful establishn1ent,
s1::lect plants appropriate tu site
soils, slopes, climate, sun, ,vind,
rain, land use, air 1nuve1nent,
ecological consistency, and plant
inten1ctions.
--------·---------·--------,-----
STORMWATl:R POLLUTANT SOURCl:SISOURCI: CONTROL CHECKLIST
--------------·---"' --
IF THl:SI: SOURCES WILL Bl: ... THl:N YOUR WQMP SHOULD INCLUDE: THl:SI: SOURCE: CONTROL BMPs, AS APPLICABLE: I ON THI: PROJECT SITE: ••• I
-------------~------1 2 3 4
I Potential Sources of Permanent Controls-Show on Permanent Controls-List in WQMP Oper-ational BMPs-lnclude in WQMP
Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative i
[Z] E. Pools, spon1, pouds, [Z] Show lol:atiun of water feature and If the Co-Permittee n:quires pools [Z] See applicable operational BMPs in
I det.:orative fountains, a sanitary sewer cle:,u1out in an to be plu1nbed to tht: sanita~ "( ;u1Lkl111l''> h ,r \l:ll11Lllrllng ~ ( ,u1
and other water ai..:l:essiblt' area within 10 feet. sewer, place a note on the plans :--;,,.111H11111µ l\11Jl, l·.tl"Lt//.1 :111d li,11dvn
I
featlares. (E>1.ceptiu11: Publil: pools 1nust be and state in the narrative that this J '\JUllf,llll' JI
plumbed according tu County connection will be 1nade according hll p: rL tl, 1ud.tng Sir Jr1ll\\':tlv1
Depa:rtment of Environmental tu local require1nents. i
Health Guidelint:s.) I
------------------------
a F. Food st:rvice a Fur restaurants, grocery stores, and a Describe the loc.ttion and features a See the bro1.:hure, ... J ·1i ... J ;( ,od :-;L·1 \ ll t
I
other food se:rvice operations, show of the designated cleaning area. lndu~!n 1-'it"sl ,\Lu1;u',L'!nc1H 11LtL!ltt·~ lur
location (indoors or in a covered a Describe the itenis to be clcanetl in Rc~l.lLLLLllh, t >llJLl·n :-;!,>rL·..,,
are.t outdoors) of .t floor sink or this facility .tttd ho\\· it hots bl·en l)L·l11..11c~~L"ll" <tnd l\1Lvnc," ,ii
I other art'a tOr cleaning Hour 1nats1 sized to insurt' that the largest hi tp n tl(>lJLL,Jr~ -,111r111\1.".Llt·1
containers, and equip1nent. items can be aci..:onunodated. Pnn:itle this brochure tone\\ site
I a On the drawing, show a note that O\vnen,, lesst·es, and operators.
this drain will ht! i..:uunei..:ted tu a
I gre.tse interceptor betOre
dis1.:harging tu the sanitary st:wer.
a G, Refuse areas a Sho\v when: site refuse and a State ho\v site refuse \vill be a . -----~ --~-~-i
State ho\\' the tOllo\ving ,vill be
re1.:yi..:led materials will be handlt:d handled and provide supporting i111plenie11ted: i
and stored for pickup. Set! local detail tu what is sho\Vn on plans. ' 1'1uvide adequate nt11ube1· ut municipal requirenu:nts for sizes a State that signs ,vill be posted on or rt:1.:eptal'.les, lnspcct rc1.:eptal'.les I and other dt:tails of refuse areas. near dumpsters \Vith the words "Du reguh.trl~; repaif or rephtce leaky !
a lf dumpstt:rs or otht:r rei.:eptaclt!s nut dump hazardous 1naterials re1.:eptacles. Keep receptacles 1.:overed. I
are outdoors, sho\v how the here" or si1nilar. Prohibit/ prevent du1nping of liquid or
designatt:d area \Vill be covered, hazardous wastes. Post ''no hazardous
gradt:d, and paved to prevt:nt run-1naterials" signs. lnspet.:t and pick up
on and show locations of berms to liner dail~' and clean up spills
prevt:nt runoff front the area. i1nn1ediately. Keep spill control
I a Any drains fru1n dutnpsters, 111aterials available on-site. See Fact
cumpa\.:tors, and tallow bin areas She-et SC~J-1-, "'\V.isce l-Iandling and
shall be conneL:ted to a grease Disposal'' in the CASQA Storn1\vater
n:n1oval deviL:e bt:fore dis1.:harge to Qualitv l-landhouk~ at
sanitary sewer. ~.\\\\-."-·ab_!!!Vhandhouks.t.:01n
---~-~ ·---··---------------------"-~----------------~-~
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
IF THESE SOURCES WILL BE ••• THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs, AS APPLICABLE ON THE PROJECT SITE •..
---------
1 2 3 4
Potential Sources of Permanent Controls-Show on Permanent Controls-List in WQMP Operational BMPs-lnclude in WQMP
Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative I
D H. Industrial prot:t:sses. D Show prot:et;s area. D If industrial prucesses are to be D St:t' Fact Sheet SC-10, "Non-I
lol'.ated on silt:, state: ''All procesi; Stonn\\'ate-r lJist.·harges" in tht' I a1.:tivities tu be performed indoors. CASQA Scurnn.\'ater Qualit~
Nu prot:esses to drain tu exterior or Handbooks <\t '
tu storm drain system." '"""" .(;abn1phaudbooks .1.:tnn
I :-il·1.-· the lir()churc "!ndu:,rnal l'\:.
l\n111nc1.:i;il l·aul!11cs., Bl·q \L1n.tgenir·111
I l1r.tcflcc~ tt1r· l11du~1r1al. ( t11n11icrcul
i ';tLilllll'.~ ,, ;L!
h11p: 11,_J\tJUd.tH~ ',fLJr!1l\\-.lft'l" J
---------
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
IF THESE SOURCES WILL BE ••• THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs, AS APPLICABLE ON THE PROJECT SITE •••
-------------"--------
1 2 3 4
Potential Sources of Permanent Controls-Show on Permanent Controls-List in WQMP Operational BMPs-lnclude in WQMP
Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative
D I. Outduur storage of D Shu\\' any outdoor storage areas, Include a detailed desl'.ription of D See che F,u.:c Sheets SC-31, "Outdoor
equipment or materials. hu.:luding how materials will be n1aterials to be scored, slorage Liquid Container Storage" an<l SC-33,
(See rows J and K for covered. Show how areas ,vill be areas, and struL:tural feature8 to "Ourduor Storage of Ra,v l\lateri,ds " I
source control graded and bt:r1ned to prevent run-prevent pollutants fron1 entering in tltt' CASQA Stunnw.1ter Quality
nteasures fur veh.icli: on or run-utI frutn ari:a. stonn drains. J--landbuuks .lt
cli:aning, n:pair, .tnd D Storagi: of nun-hazardous liquids Where appropriate, reference \V\V\\ .cabn1pllandhooks.con1
maintenanci:.) shall bi: i..:overt:d by a ruof and/ ur doi..:un1.entation of i..:01npliance \Vith
drain to the sanitary si:wt:r syste1n, the requirements uf Hazardous !
and be contained by benns, dikes, Materials Programs fur:
liners, or vaults. • l-Iazardous Wastt:' Gent':ratiun
D Sturagt'.' of hazardous materials and • Hazardous Materials Release wastt:s 1nust be in compliance ,vith Response .tud lnvcntu~ the local hazardous 1naterials
ordiuaiu;e and a Hazardous • California Ai..:cidental Release
Mau:rials Management Plau fur the (Ca!ARP)
site. • Aboveground Storage Tank
• Uniforn1. Fire Code Articli: 80
Section IU3(b) & (c) 1991
• Underground Storage 'I'.tnk
W\VW .cchealth.urg {_ groups I haz1na t
L
---.___ ____ -------------
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
IF THESE SOURCES WILL BE
ON THE PROJECT SITE •..
1:1
1
Potential Sources of
Runoff Pollutants
J. Vehil:le .tnd
Eq uip1nent Cleaning
1:1
••. THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONT:OL BMPs, AS APPLICABLE _______ I
-• , 4 ~
Permanent Controls-Show on
WQMP Drawin_!l_s
Show un drawings as appropriate:
(1) Cummt:n.:i.il/industrial facilities
having vehicle/equip1nent cleaning
needs shall either provide a
i.:uvered, ber1ned area fur washing
al:tivities or dist:uurage
veh..icle/equip1nent \\'.tshing by
n:muving hose bibs and installing
signs prohibiting sui.:h uses.
(2) Multi-dwelling complexes shall
have a paved, bermed, and c...:overed
1.:ar wash area ( unless -.:ar washing
is prohibited on•site and hoses are
provided with an autu1natic shut-
utl 10 disl:ouragt: sul:b use),
(3) Washing art:as fur l:ars, vt:hil:les,
and e,1uip1nent shall be paved,
designed tu prevt:nt run-on tu or
runufl' from the area, and plu1nbed
to drain tu the sanitary sewer.
(4) Com1ut:rl:ial l:ar wash fa1:ilities
shall be designed su1:h that no
runoff front tht: fal:ility is
discharged to tht: storn1 drain
system. Wastewater fro1n the
facility shall discharge tu the
sanitary sewer, or a ,vastewater
recla1natiun syste1n shall be
installed.
Permanent Controls-List in WQMP
1:1
Table and Narrative
If a l:ar wash area is not provided,
desl:ribe any measures taken tu
discourage on-site l:ilt washing .tnd
explain how these ,vill be enforced.
Operational BMPs-lnclude in WQMP I
1:1
Table and Narrative I
l)t'sc.-ihe opt:rational 1neasurt:s to
iu1ple1ncnt the follu,ving (if
applicable):
Wash\vatcr fru1n \·ehiclt: and
eyuip1nent \\'ashing oper..1tions shall
uot be discharged to the stonn drain
syste1n. RclL·r 1,1 "I. lu1du11r Clcllllng
\ul\-lr!L'" ,Llld l'r()tL·~~!()Jl~d .\1,ilHk Scn·1L·L-
l\1)\llkr< fr)r ni.1111 ()1 ihL· P,i1L·111Ld
:',(JllrLL'~ ()t J{unDl°f p,J\lut~Ll\l~ ,._--,l{L'_l';(Jr!L"S
belt,\\ B1ucltu1-v l;\ll hl-found :ll
http: n·l1t,tJd.(Jn', S!(Jrn1,\·:1rL·1
DCar dealerships and sitnilar 1na~
rinst: cars \Vith \Vatt>r only.
"1
I
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
IF THESE SOURCES WILL BE
ON THE PROJECT SITE •••
-------,
.•• THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMP.s,-AS APPLICABLE ~
1 ·-·· 2 3 4 ,
Potential Sources of
Runoff Pollutants
Q K. Vehicle/ElJuip1ncnt
Repair and
Maint1:na1u.:e
Permanent Controls-Show on Permanent Controls-List in WQMP
WQMP Drawin.9.s Table and Narrative
CJ At.:t.:um111udate all vehiclt."
cquipnn:ut rt:pair and maintenance
indoors. Or designate an outdoor
work .irca and design the are.t to
pn:vcnt ruu-un and runutf uf
stunn,vater.
CJ Sho,v sc(;oudary containment for
exterior work areas when: 111utor
uil1 brake tluid, gasoline, diesel
fuel, radiator fluid, ai.:id-t:untaining
batteries or other h.-zardous
materials or hazardous wastes are
used or stored. Drains shall not be
installed within tl11: secondary
cuntainn1ent areas.
l:l Add a note on the plans that statt:s
either (1) there are no t1oor drains,
or (2) t1uor drains are connected to
wastewater pretreat1uenl syst1:n1s
prior tu discharge to the sanitary
st:wt:r and an industrial \A-'aste
discharge pem1it will be obtained.
I:] State that nu vehicle repair ur
1naintenance will be done outdoors,
or else describe the required
features of the outdoor work area.
CJ State that there are no floor drains
or if there are floor drains, note the
agency fron1 which an industrial
,vaste discharge pennit will be
obtaint:d and that the design 1neets
that agency's re4uin:n11;:nts.
I:] St.tie that there are nu tanks,
t:ontainers or sinks to be used fur
parts cleaning or rinsing ur, if there
are, note the agency fro1n ,vhich an
industrial waste discharge penuit
will be obtained and that the
design meets that agency's
req uiren1ents.
--
Operational BMPs-lnclude in WQMP
Table and Narrative
In the Sturn1,vater Control Plan, note
that all of the follu,ving resrrictiuns
apply tu use the site:
1:1 Nu person shall dispose of, nor pennit
the disposal, directly or indirectly of
vehil·le fluids, hazardous 111.iterials, or
rinse,vater frotn parts cleaning into
stunn drains.
1:J No ,·ehil·le fluid reinu\'al shall be
perfonned outside a building, nor on
asphalt or ground surf.u.:es, ,vhether
inside or uutside :.1 building, except in
su<.:h a 111aHnt'f .is tu eusurt' that any
spilled fluid ,vill be in an area of
se,:ondary l.'Ontainnu:nt. Leaking
vehicle tluids shall be <.:untained or
drained frun1 the vehicle i1nmediatel\".
Nu person shall leave unattendt:d drip
1:J parts or utht:r open <.:Ontainers
<.:ontainiug vehicle lluid, unless such
<.:ont.iiners an:: in use or in au area uf
secondary cuntai11n1cut.
Rclct lu •'_\ult)lll\l\1\,· \Lt1ntt·n,1nLL· & l ,I!
( ,1n· lh·~t .\Lu1agl·111uH Pra1.-l1LL'" I()! \u111
B,Jt\\ "lH1p-... \u1u Rq);\Jr Shup\. t:ar
l_)e;1krsl11ps, lia" ~1.tll\J\1~ ;1nd l'kcl
:-;cn!cc l l11cr:tlhl11-.." l)n)cl1u1T c·.u111L
[()Utld,ll b~ 1ctll1()du1u:-,1urJ11\\;t1u
RL·ftT f(1 l lurd11ur Cle:111111g \Lll\"llll"', <trld
llr()lc-..~J()ILil ~lt1bdc \LT\llt· l'r(>\·1dcr-.. h!l
1nan1 Lil the ]\Jtcn11a! ~tllJrLT~ l!!
--
]{untJtf P(!l.lu1.u1b.· c.ttq:(1UL.·, l,.d(,\\ _J
H1(1LhLlrc L,lII l1L· l,ntnd .LI
1.u.iµ____n tl1H1d.1Jn' -..11>11ll\\.tlL1
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
·--------,
IF THESE SOURCES WILL BE
ON THE PROJECT SITE ... ... THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs, AS APPLICABLE
-----------' ----~ ----j 1 2 3 4
D
I
Potential Sources of Permanent Controls-Show on Permanent Controls-List in WQMP Operational BMPs-lnclude in WQMP ' I
' Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative
L. Fuel Dispensing D Fueling area~.C· shall have D 'l'he propt'.rty owner shall dr~ ~"veep
Areas in1penneable flours (i.e., portland the fueling area routinely.
cement l.'.Ulll:rete or equivalent D Set' the Fact Sheet SD-JU, "Fueling s1nooth in1pervious surface) that Areas" in the CASQA Storunvater are: a) graded at the 1nini1nuni Quality 1-landbuoks at slope necessary to prevent ponding; \\'\\ \\ .1.:ab1nphandbuoks.con1 and b) separah:d from tht' rest of
th1;: sitt: by a grade break that
pn:vents run-on of stornlwater tu
the 1naximum extent pral.'.tii.:able.
D Fut'ling areas shall be 1.:overed by a
1.:anopy that extends a minimum of
tt:u ti:et in eai.:h direi.:tion from eai.:h
pump. [Alternative: Tiu~ fueling
art'a 1nust be 1.:uvered and tht'
i.:uver':s 1nini1num dimensions n1ust
be e1,1ual tu or greater than tht' area
within the grade break or fuel
di:spe1u,iug area1.} The 1.:anupy [or
i.:uverJ shall uut drain ontu the
fuefu1g art'a.
---·--·
1, Tin: fudiug au:a sh.tll bt: ddlncd as lhc area ex.lending a 111iniu1u111 ol 6.5 feet fruru the 1.:uruer ufcai:h had dispt:nst:r ur the lcn~th at wlud1 lht: hose .ind m11.1.le .1,,:,,ernhh ma\ he opcr.ikd plu~
a mi11i111u1I1 uf one foot, whid1cvcl' is 1,;rt:atc1·.
!
!
I
I
!
I
I
J
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
IF THESE SOURCES WILL BE
ON THE PROJECT SITE •••
1
Potential Sources of
Runoff Pollutants
Q M. Loading Du1..:ks
---------------------,-------------,
•.. THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs, AS APPLICABLE
I
1
D
2
Permanent Controls-Show on
WQMP Drawin_!!_S
Shu,v a pn,:limin.tI)' design fur the
loading duck area, including
routing and drainage. Loading
du1.:ks shall bt' covered and/ ur
graded to n1ini1nizi: run-on to and
runutl fro1n the loading area. Roof
downspouts shall be positioned tu
direl'.t !Storm,vater away tfom tl1t,.
loading area. Water from loading
dut:k areas shall be drained to tht"
sanitary sewer, or diverted and
l'.ollected fur ultimate dist:harge tu
the sanitary sewt:r.
0 Loading dock areas draining
direl:tl)' to the sanitary sewer shall
be equipped with a spill t.:ontrol
vo1lve or equivalent devit.:e, whil:h
shall be kept L:losed during periods
uf operation.
D Provide a roof overhang over tin:
loading areo1 or install door skirts
( t.:uwling) at l!ach bay that enclose
the end of the-trailer.
3
Permanent Controls-List in WQMP
Table and Narrative
4
Operational BMPs-lnclude in WQMP
D
D
Table and Narrative
l\:love loaded ant.1 unlo.ldcd iteins
indoors as soon as possible.
See fal:t Shet.·t SC-30, "Outdoor
Loading and Unloading," in the
CASQA Stortn\vater Quali~
l landbooks at
\V\\"\\'. cabin p ha ud boo ks. l.'.O 111
J
!
L-----------------'L------------------'-------------------~-------···--·---------------------____J
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
IF THESE SOURCES WILL BE
ON THE PROJECT SITE •••
1
Potential Sources of
Runoff Pollutants
0 N. Fire Sprinkler Test
Water
0
0
0
0
0
CJ
O. Miscellaneous Drain
or Wash Watt:r or Other
Sources
Boiler drain lines
Condensate drain lint:s
Rooftop equip1nent
Drainagl! sun1ps
Roofing, gutten:,, and
tri1n.
Otlu:r sourcets
••• THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs, AS APPLICABLE I
2
Permanent Controls-Show on
WQMP Drawinl!_s
3
Permanent Controls-List in WQMP
Table and Narrative
0
0
0
0
0
0
0
Provide a 1ne•u1s to drain tire
sprinkler test water to du: sanitary
sewer.
Buih:r drain lines shall be directly
or indirei.:tly connected to the
sanitary sewer syste1n and tnay not
discharge to the sturn1 drain
syste1n.
Condensate· drain lines tnay
discharge to landscaped areas if the
flow is s1nall enough that runoff
will nut occur. Condensate drain
lines tnay nut discharge tu Che
storm drain system.
Rooftop equipa1ent \Vith potential
cu produce pollutants shall be
routed and/ or have secondary
containtnent.
Any drainage sumps on-site shall
feature a sedi1nent sun1p tu reduce
the quantity uf st'di1nent in
pun1ped \Vater.
Avoid roofing, gutters, and trin1
made of copper or other
unprotected metals that 1nay leach
into runoff.
ltu:lude control!:i for other suurct's
a!:i specified by local revie\\'er.
4
Operational BMPs-lnclude in WQMP
Table and Narrative
0 I
See the note in Fact Shet'I SC-41) i
"Building and Grounds Maintenanc.:e," !
in the CASQA Stornnvater Quali~' I
f-landbuuks at
I \V\\'\\·.c,,bn1pha11Jbuuks.con1 J
STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST
IF THESE SOURCES WILL BE ..• THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs, AS APPLICABLE -----1
ON THE PROJECT SITE •••
1 2 3 4 -,
Potential Sources of Permanent Controls-Show on Permanent Controls-List in WQMP Operational BMPs-lnclude in WQMP j
Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative
0 0 S\\-ecp plazas, side,va)ks, and parking ' P. Plazas, sidewalks,
und parking luts. lors regularly to prevc::nt accun1ulation
uf littt~r and debris. Collect debris frun1
pressure ,vashing tu prevl'nt entry into
lhe stonn drain s~'stetn. Collect '
,vash\.valer containing any cleaning i
agent or degreaser and dist:harge to ,
the sanitary_~~\\.'t:f not lo a S{O~l~l. drain. I
ATTACHMENT 3
Structural BMP Maintenance Information
Use this checklist to ensure the required information has been included in the Structural
BMP Maintenance Information Attachment:
Preliminary Design/Planning/CEQA level submittal:
Attachment 3 must identify:
E]1 Typical maintenance indicators and actions for proposed structural BMP(s) based
on Section 7.7 of the BMP Design Manual
Final Design level submittal:
Attachment 3 must identify:
D Specific maintenance indicators and actions for proposed structural BMP(s). This
shall be based on Section 7.7 of the BMP Design Manual and enhanced to reflect
actual proposed components of the structural BMP(s) D How to access the structural BMP(s) to inspect and perform maintenance
O Features that are provided to facilitate inspection (e.g., observation ports,
cleanouts, silt posts, or other features that allow the inspector to view necessary
components of the structural BMP and compare to maintenance thresholds) O Manufacturer and part number for proprietary parts of structural BMP(s) when
applicable
O Maintenance thresholds for BMPs subject to siltation or heavy trash(e.g., silt level
posts or other markings shall be included in all BMP components that will trap and
store sediment, trash, and/or debris, so that the inspector may determine how full
the BMP is, and the maintenance personnel may determine where the bottom of
the BMP is . If required, posts or other markings shall be indicated and described
on structural BMP plans.)
D Recommended equipment to perform maintenance D When applicable, necessary special training or certification requirements for
inspection and maintenance personnel such as confined space entry or
hazardous waste management
CULTEC ST ORMFILTER™ T-80 Water Quality Unit
The CULTEC StormFilter™ T-80 is a stormwater filtra-
tion unit for use in non-traffic applications. CULTEC's
StormFilter™ T-80 has a filtering capacity of 438 gpm
with a recommended maximum inlet pipe size of 4"
(100 mm) to achieve optimal filtering performance.
This compact unit is easily transportable weighing
only 44 lbs (20 kg). It features a single removable
and serviceable filter measuring approximately 30"
W x 15" H (762 mm x 381 mm). The T-80 filter me-
dium has an Apparent Opening Size of U.S Sieve 40.
The StormFilter T-80 has an access opening of 12.5"
(318 mm) on the top center of the unit with a rec-
ommended maximum burial depth of 12" (305 mm)
below finished grade to allow adequate reach
for service. Storm Filter T-80 is best used as a Size {L x w x H)
cost-effective inline filter for light co mmercial
or residential applications. StormFilter T-80 is Access opening
designed as a serviceable unit which allows
for pollutant removal prior to water entering a
CULTEC stormwater management system but Capacity
it may be used as a stand alone product or
with other types of systems as well. Max. Inlet Opening in Endwall
Use the StormFilter T-80 with or without a
corrugated riser, grate or optional filter (each
sold separately) based on your needs.
Wh en the filter frames are not installed, the Storm-
Filter™ T-80 may be used as a holding tank or catch-
basin. This compact unit is easy to install and sim-
ple for the homeowner or maintenance personnel to
maintain. Perfect for treating or controlling roof and
driveway runoff for sm aller applications.
GENERAL
42" X 31" X 26.38"
1067 mm x 787 mm x 670 mm
12.5"
318 mm
90 gc11/unit
340. 7 I/unit
4"
100 mm
Shown with optional
accessories
(sold separately)
CULTEC StormFilter'M T-80 may be used as a stormwater filtration unit, holding tank or catchbasin.
CHAMBER PARAMETERS
1. The chambers will be manufactured by CULTEC, Inc. of Brookfield, CT. (203-775-4416 or 1-800-428-5832)
2. The chamber will be formed of high molecular weight high density polyethylene (HMWHDPE).
3. The nominal chamber dimensions of the CULTEC StormFilter"• T-80 shall be 26.38 inches (670 mm) tall, 31 inches (787
mm) wide and 42 inches (1067 mm) long.
4. The chamber will have a 12.5 inch (318 mm) diameter access opening located at the top of the unit.
5. Maximum inlet opening on the chamber endwall is 4 inches (100 mm).
6. The nominal storage volume of the StormFilter™ T-80 will be 90 gal I unit (340.7 I I unit).
7. The StormFilter™ T-80 chamber shall have 5 corrugations.
8. The Storm Filter™ has a maximum filtering capacity of 438 gpm.
9. The nominal filter bag dimensions are 30 inches wide x 15 inches high (762 mm x 381 mm).
10. The chamber will be designed for non-traffic applications when installed according to CULTEC's recommended installation
instructions.
11. The chamber shall be manufactured in an ISO 9001:2000 certified facility.
••
CULTEC STORMFILTER™ T-80 Water Quality Unit CULTEC
Three View Drawing
f --.-{
31.00"
[787 mm]
rt I 1,
• • •
42.00"
[1067 mm)
I I
l
l ' I l
'lJ -·,
', _ 0 12.50"
[0318 mm]
26.38"
[6701 mm) 23.00" l: [Si mm) I
, ____ Il D_QQ
Typical Cross Section for Non-Traffic Application
6"(152mmJ ---IS" lt52mm1 6" [152 ..... 1
4%'(1087 mml
31.00"
, --(787 mm)---
16.50"
(419 mm)-
-+--+--6" (152mml
.. -----
Oper"tion and Ma·intenance
Guidelines
-----------------------------------------~CULTEC
Operation & Maintenance
This manual contains guidelines recommended by CULTEC, Inc. and may be used in conjunction with, but not to supersede,
local regulations or regulatory authorities. OSHA Guidelines must be followed when inspecting or cleaning any structure.
Introduction
The CULTEC Subsurface Stormwater Management System is a high-density polyethylene (HOPE) chamber sys-
tem arranged in parallel rows surrounded by washed stone. The CULTEC chambers create arch-shaped voids
within the washed stone to provide stormwater detention, retention, infiltration, and reclamation. Filter fabric
is placed between the native soil and stone interface to prevent the intrusion of fines into the system. In
order to minimize the amount of sediment which may enter the CULTEC system, a sediment collection device
(stormwater pretreatment device) is recommended upstream from the CULTEC chamber system. Examples of
pretreatment devices include, but are not limited to, an appropriately sized catch basin with sump, pretreat-
ment catchment device, oil grit separator, or baffled distribution box. Manufactured pretreatment devices may
also be used in accordance with CULTEC chambers. Installation, operation, and maintenance of these devices
shall be in accordance with manufacturer's recommendations. Almost all of the sediment entering the storm-
water management system will be collected within the pretreatment device.
Best Management Practices allow for the maintenance of the preliminary collection systems prior to feeding
the CULTEC chambers. The pretreatment structures shall be inspected for any debris that will restrict inlet
flow rates. Outfall structures, if any, such as outlet control must also be inspected for any obstructions that
would restrict outlet flow rates. OSHA Guidelines must be followed when inspecting or cleaning any structure.
Operation and Maintenance Requirements
I. Operation
CULTEC stormwater management systems shall be operated to receive only stormwater run-off in accordance
with applicable local regulations. CULTEC subsurface stormwater management chambers operate at peak per-
formance when installed in series with pretreatment. Pretreatment of suspended solids is superior to treat-
ment of solids once they have been introduced into the system. The use of pretreatment is adequate as long
as the structure is maintained and the site remains stable with finished impervious surfaces such as parking
lots, walkways, and pervious areas are properly maintained. If there is to be an unstable condition, such as
improvements to buildings or parking areas, all proper silt control measures shall be implemented according
to local regulations.
II. Inspection and Maintenance Options
A. The CULTEC system may be equipped with an inspection port located on the inlet row.
The inspection port is a circular cast box placed in a rectangular concrete collar. When the
lid is removed, a 6-inch (150 mm) pipe with a screw-in plug will be exposed. Remove the
plug. This will provide access to the CULTEC Chamber row below. From the surface, through
this access, the sediment may be measured at this location. A stadia rod may be used to
measure the depth of sediment if any in this row. If the depth of sediment is in excess of
3 inches (76 mm), then this row should be cleaned with high pressure water through a
culvert cleaning nozzle. This would be carried out through an upstream manhole or through
the CULTEC StormFilter Unit (or other pre-treatment device). CCTV inspection of this row can
be deployed through this access port to determine if any sediment has accumulated in the
inlet row.
B. If the CULTEC bed is not equipped with an inspection port, then access to the inlet row will be
through an upstream manhole or the CULTEC StormFilter.
1. Manhole Access
This inspection should only be carried out by persons trained in confined space
entry and sewer inspection services. After the manhole cover has been removed
a gas detector must be lowered into the manhole to ensure that there are not high
concentrations of toxic gases present. The inspector should be lowered into the
manhole with the proper safety equipment as per OSHA requirements. The inspector
may be able to observe sediment from this location. If this is not possible, the inspec-
tor will need to deploy a CCTV robot to permit viewing of the ?ediment.
2~--------------------------------------------------------------------------------~ For more information. contact CULTEC at (203) 775-4416 or visit www.cultec.com.
Ope ration & Maintenance E
CULTEC
2. StormFilter Access
Remove the manhole cover to allow access to the unit. Typically a 30-inch (750 mm)
pipe is used as a riser from the StormFilter to the surface. As in the case with
manhole access, this access point requires a technician trained in confined space
entry with proper gas detection equipment. This individual must be equipped
with the proper safety equipment for entry into the Storm Filter. The technician will
be lowered onto the StormFilter unit. The hatch on the unit must be removed. Inside
the unit are two filters which may be removed according to StormFilter maintenance
guidelines. Once these filters are removed the inspector can enter the Storm Filter
unit to launch the CCTV camera robot.
C. The inlet row of the CULTEC system is placed on a polyethylene liner to prevent scouring
of the washed stone beneath this row. This also facilitates the flushing of this row with high
pressure water through a culvert cleaning nozzle. The nozzle is deployed through a manhole
or the StormFilter and extended to the end of the row. The water is turned on and the inlet
row is back-flushed into the manhole or StormFilter. This water is to be removed from the
manhole or StormFilter using a vacuum truck.
III. Maintenance Guidelines
The following guidelines shall be adhered to for the operation and maintenance of the CULTEC stormwater
management system:
A. The owner shall keep a maintenance log which shall include details of any events
which would have an effect on the system's operational capacity.
B. The operation and maintenance procedure shall be reviewed periodically and
changed to meet site conditions.
C. Maintenance of the stormwater management system shall be performed by qualified
workers and shall follow applicable occupational health and safety requirements.
D. Debris removed from the stormwater management system shall be disposed of in
accordance with applicable laws and regulations.
IV. Suggested Maintenance Schedules
A. Minor Maintenance
Frequency
The following suggested schedule shall be followed for routine maintenance during
the regular operation of the stormwater system:
Action
Monthly in first year Check inlets and outlets for clogging and remove any debris as
required.
Spring and Fall Check inlets and outlets for clogging and remove any debris as
required.
One year after commissioning and every third Check inlets and outlets for clogging and remove any debris as year following required.
B. Major Maintenance
The following suggested maintenance schedule shall be followed to maintain the performance
of the CULTEC stormwater management chambers. Additional work may be necessary due
to insufficient performance and other issues that might be found during the inspection of the
stormwater management chambers. (See table on next page)
~------------------------------------------------------------------------------------3 For more information. contact CULTEC at (203) 775-4416 or visit www:cultec.com.
CULTEC Stormwater
Chambers
Surrounding Site
Spring and Fall
2 years after commis-
sioning
9 years after commis-
sioning every 9 years
following
45 years after com-
missioning
45 to 50 years after
commissioning
Monthly in 1st year
Spring and Fall
Yearly
•
•
•
•
•
•
•
•
Obtain documentation that the inlets, outlets and vents have been
cleaned and will function as intended.
Check inlet and outlets for clogging and remove any debris as re-
quired.
Inspect the interior of the stormwater management chambers
through inspection port for deficiencies using CC1V or comparable
technique.
Obtain documentation that the stormwater management chambers
and feed connectors will function as anticipated.
Clean stormwater management chambers and feed connectors of
any debris.
Inspect the interior of the stormwater management structures for
deficiencies using CC1V or comparable technique.
Obtain documentation that the stormwater management chambers
and feed connectors have been cleaned and will function as intend-
ed.
Clean stormwater management chambers and feed connectors of
any debris.
Determine the remaining life expectancy of the stormwater man-
agement chambers and recommended schedule and actions to reha-
bilitate the stormwater management chambers as required.
• Inspect the interior of the stormwater management chambers for
deficiencies using CCTV or comparable technique.
• Replace or restore the stormwater management chambers in accor-
dance with the schedule determined at the 45-year inspection.
• Attain the appropriate approvals as required.
• Establish a new operation and maintenance schedule.
• Check for depressions in areas over and surrounding the stormwater
management system.
• Check for depressions in areas over and surrounding the stormwater
management system.
Confirm that no unauthorized modifications have been performed to
the site.
For additional information concerning the maintenance of CULTEC Subsurface Stormwater Management Chambers, please
contact CULTEC, Inc. at 1-800-428-5832.
CULTEC
Chamber of Choice~
CULTEC, Inc.
878 Federal Road • P.O. Box 280 • Brookfield, CT 06804
Phone: 203-775-4416 • Toll Free: 800-4-CULTEC • Fax: 203-775-1462
Web: www.cultec.com • E-mail: custservice@cultec.com
r1 11 r.nnR nfi-, n
STORM DRAIN REGULATIONS
IN SAN DIEGO
All outdoor activities, including construction,
are required to prevent pollutants from
entering the storm drain conveyance system.
Under the City of San Diego's Municipal
Code §43.0301, Storm Water Management
and Discharge Control ordinance, it is
illegal to discharge construction debris and
materials into the storm water conveyance
system. As a condition of your permit,
you are required to prevent construction
generated or related poll utants from entering
the storm drain system.
INSPECTION AND
ENFORCEMENT PROGl<.AM
The City of San Diego Storm Water Pollution
Prevention Division was established to ensure
that all businesses operate in compliance
with all Federal and State Clean Water
Regulations. The Division works with
Development Services field inspectors and
engineers to ensure construction sites are in
compliance with Storm Water laws.
ai!f$j
VIOLATIONS AND FINES
Contractors, site supervisors and property
owners will be held responsible for
violations, and failure to prevent illegal
discharges will result in penalties up to
$1,000 per incidence. Gross violations may
lead to fines of up to $10,000 per day and
may include reimbursing the City for all
expenses associated with clean up.
THE CnY OF SAN DIEGO
DEVELOPMENT SERVICES DEPARTMENT
Important Websites and Phone Numbers
City of San Diego, Development Services Dept.
www.sandiego.gov/development-services
City of San Diego, Storm Water Division
www.ThinkBlue.org
County of San Diego
www.projectcleanwater.org
California State Water Board
www.waterboards.ca.gov/sandiego
International BMP Database
www.bmpdatabase.org
California Storm Water Quality Association
www.cabmphandbooks.com
EDCO (Solid Waste)
www.edcodisposal.com
Development Services Phone Numbers:
Appointments 619 .446.5300
General /Technical Information 619.446.5000
DSD Field Office 858.492 .5070
Records
Inspection Scheduling
619.446.5200
858.581 .7111
Emergency Phone Numbers:
Hazardous Spills
County HazMat
EDCO (solid waste)
To report pollution in
the storm drain, call the
Think Blue Hotline at
619.2 35.1000
www.ThinkBlue.org
911
619 .338.2231
619.287.7555
,.~~,. -~
o,.C'' • I .,. I• •' ... ,:;-:t
f't,1 I I I ~¢,'i: ~ """1 .t,"q<"fot.!;i. Udy:, .i,,J. &
I nr, 111fot111cir1011 1s uv&/ab/t; 111 ulle11 ldl1ve /r)f 11/dlS uµo11 requ<1st
ru uµ<Jald U/ 111(.)<11/y l/11, i11/0fll•Jt1011. COllldU lilt! Oty', S!UlfTI ware, 01VISIUII
<),..> '(_.J-a t-'1111tdd ou He;n.;ydt:KJ P<ipt::r
...Ur.Jt.O:
1 ~ ~ii.JI
r Ht c, rv U t SAN DIEG(.)
CLEAN
CONST RUCTION
A Storm Water Pollution
Prevention Guide
for the
Construction Industry
D EVi-LOl'MLNl SERVICES DEl'Aln'MENI
STORM WAJ"ER POLLV'l lON
l'REVENl'ION DIVISION
How ·10 DEVELOP Youn WATER
POLLUTION CONTROL PLAN
The City of San Diego is working with
contractors to implement what are known
as Best Management Practices (BMPs) on all
construction sites. BMPs are methods used
to keep pollution out of storm drains and
off City property, such as sidewalks, streets,
parkways and alleys. Typical pollutants
generated and not properly controlled at
construction sites include sediment, concrete,
paints, chemicals, sealants and trash.
Important Steps for
Pollution Prevention
Every construction project must have
a water quality control or pollution
prevention plan (SWPCP or SWPPP) that
addresses efforts to prevent site generated
and construction related pollutants from
leaving the construction site.
Understand Storm Water
Compliance and create your SWPPP
to match your construction site and
project needs.
Identify the storm drains and the
conveyance system(s) nearest the
construction area.
Obtain Permits, including Traffic
Control Permits, if needed.
Contact the inspector assigned to
your project to answer any questions
and ensure compliance.
Follow your SWPPP. Adjust and
modify BMPs as necessary.
TYPICAL LIST OF
CONSTRUCTION SITE BMPs:
1. Conduct daily site inspections and clean
areas as necessary.
2. Develop spill response and containment
procedures. Keep kits stocked and ready.
3. Educate all employees, consu ltants and
subcontractors about your site BMPs.
4. Develop an erosion control plan for wind
and rain to prevent pollution from leaving
the construction site.
5. Regularly maintain all BMPs at the project site.
ADDITIONAL TIPS To SuPPORT BMPs:
• Do not allow concrete, paints, chemicals,
sediment, yard debris, etc. to enter the storm
drain system (curb, gutter, sidewalk, street,
drain or inlet). Store these products out of the
rain so they will stay dry
• Establish and use an adequately sized concrete
washout area to contain all liquids on site
• Provide erosion and sediment control to
prevent these pollutants from leavin g the site
• Provide a stabilized entrance and exit for
vehicles to prevent tracking dirt off site
• Sweep-up surface areas regularly and place
the waste in a dumpster. Don't use hose water
to clean
• Store materials in a secure place to prevent
seepage and spillage
• Properly dispose of all materials. Do not dump
unused or waste products on the ground, where
water can carry them to the storm drain
• When washing equipment on site, prevent
wastewater from entering the storm drain
system. Do not let the water leave the site
PREVENT POLLUTION ANJ> }\VOID
FINES -REMEMBER 1'HE 3 Cs
Control -The best line ot defense is to
prevent rnatenals and debris from entering
the storrn drain via procedural methods or
"good housekeeping."
Contain -Isolate your work area to
prevent discharges from leaving the site
Capture -Clean up the work area by
sweeping or vacuuming up any residue that
has the potential to be discharged. Properly
dispose of the residue, and check with
the manufacturer. as needed, for disposal
requirements.
Adopt these
behaviors and help
clean up our beaches,
bays and watersheds.
TRAl<'fl~ CONTROL PERMlTS
If at any point. you (as a contractor or
subcontractor) need to use the public
right-of-way 1n order to work or store
materi<lb, you must apply for a rr affic
Control Permit. To apply, contact the
Development Services Department at
(619) 446-5150.
Forms are also available online at
www.sandiego.gov I development-services
in the "Forms and Guidelines" section,
under "Information Bulletim "
See Bulletin #177. How to Obtain a
Public Right-of-Way Permit to, Ttathc
Contfol for information.
C0NSTRlJCTION SITE BEST MAN AGEM ENT PRACTICES
THE l'OLLOWING liMPs MUST JJE .1:-'l{Ol'EltLY USElJ AT ALL C0NST1WC 1'JON SITES IN THE CITY TO PROTEC I' S'J'Ol{M l>llAlNS \Nl> MlNIMIZI POU ll'I ION
The City of San Diego's Municipal Code §43.0301, (Storm Water Management and Discharge Control ordinance)
prohibits pollutant discharges at work sites from flowing into storm drains and polluting neighborhood
creeks, bays and the ocean. To stay in compliance w ith
the law and keep your project on schedule, make sure K \ ~-r CONCRETE TRUCKS I PUMPERS I FINISHERS
BMPs are in place and functioning. Sites must be ~ . J. . BMPs ,uch d." tarp, dlld gr.1vd Udg> ,hould l.te 1111ple1ne11ted to prevent
niatt:nal> drid 1e~1due h()rll enlr:'nng mtu the ':ltorm dr.i111 W"iit:!m. checked and maintained daily. . .
PAINT AN D STUCCO ----------,
All paint and ,tucco mdteriab stored on the site i 1iu,t be wntai11ed and
covered. It i, illegal to dump unused pa111t or stucw ,n the ,ewei 01
,toun drain sy,tern. Do not wash out paint u,ushe, 1r1 the street or dump
a11y residue, in the storm drain. Pa1r1t bru>he, a11d '>f.lrdY gun, mu,t b,:,
washed/deaned out into a hazaJdou, rndlendb dru111 01 Ltack into the
011gmal cuntamer and dispo,ed of J)roperly.
P ERIMETER CONTROLS ------~
Gravel bags. silt fences and straw wattles (we,ghled down) ,ue
acceptable pemneter controls, and must be used to surround the
entue s,te. Avoid running over perimeter w11trob with vehicle, or l,eavy
equipment as they can damage the mate11al>. Keef) extra al.tsorbent
materials and/or a wet -dry vacuum on "te to quickly p1<k uµ unintended spill,.
B U!LVlNG M ATERIALS/STAGI NG AREAS
Construd1011 rnatenal must be stored on site at all time,. tlullding
materials should always be covered when not m u,e to prevent runotf
caused L,y wind 01 rain. Flooding must abo bt p,evented by rno111toring
your site before, during and after rain event, to ensure th,,t llMPs are
tunct1on,ng and that there are not any 5dfety i»ues. ·
T RAFflC CONTROL P ERMITS
fhe City's nghl-of-way i, generally 10' from the face ot the curl, to the
private p1operty line. Any mate11al or equipment 1r1 the 11ghl-ol-way (such
as dUlllfJ>tcr, 01 1,ucks) requu<' a TrJtflC Cu11t1ol l'cr111it. ru df.lflly, co11!JLI tl11c
lJevelopment Services Department at (61~) 446-5150 Form, are also available
online at www.sand1ego.gov/devetoprne11t-services"' the "f orms and Guidelines"
section, under "lnlorrnat,on Bulletins." ,ee tlullelin #177. How to Obta111 a
/'ublic R1g/1t-of-W<1y Perr111t 101 r,affir (011lrul for informat,on
DUMPSTERS
Alway, cover durnp;te,; with a rollback tdrJ). Ared> dround duntfJsh:11
,hould be ;wept ddily. Penmr:ler control, d1Uu11d durllfJ>tc:1 dred> ,hould be
provided 11 pollutants dre leaking or d1>charging f,uin the dunipste,.
----------WASHOUT AREA
The dispo,al ot "wet" wmtruction rnaknab shuuld be handled 111 th,,
wa,huut area 1111, 111dude, paint. ,tucu.1 drltl rn11vete. Use d l.term with dn
1mpe1v1uu, l11rer to conta111 the wt>I mate11al, a11d J)ievent runoff 11111ea1by
areas The washout area rnu,t Uc' ch«<·ked c1nd md1nta1n.ed daily to en,urc
(Om1Jlla11ce All dnc,1 11nle11db mu,! be JisJ)O,ed ul al llw IJndl1II
DIRT AND GRADINli
Mounds of Jut or i;ktvel ,huuld be· ,toit'd on site a11d ,p,ayed
daily with water to J)rt:Vt'llt <'x,e,s1v,-dust. Ou1111g the rainy ,t'dson
(October bt -Ap11I 30th) th.,,.-111<Jtt>11aJ, ,hould be cove,~d Fur
tl1u,e areas that aie ddive and exposed ,1 wd wt'ather tnggert'd
action plan 111dud1ng add1t1onal BMPs should b~ 111 plate to p,,,t..d
the >1te dunng d ,ain ewnt. s,t.,, rnu,t ha\/<' ade4u.1k tracking ,ont1ol
to J)rtvenl the tramprnt ot d11l/g1.wel fium lhP "'"·
I I I '-~ f ,.,
EARTHMOVING EQUIPMENT
All ,Mrthr11ov1ng e4u1pment ,hould bt' stort'J 011 ,itt> Ma111kr1.mce
ot any equipment ,liouhJ bs> w11dulltd on ,,tc. ,md rnud t,a.-k,
and J11 t t1a1b ielt hy <'qu1prr1c>11l kac1ing t,, and lrom Lile sik
,hould be cle.tned up unmed,ately
,,---------STORM DRAINS
·~''--
Storn1 dra111> 111u,t be protected at <lll t1n1es with pe11111Ht>r
controls, ,u,h as g1avd b<lgs (Sand U<.l!(S a,~ typllally 1,ot
u1ed tor 1nlC'l p1ot,·cl1on becJuse they do not p,•11rnt llow-
through) Keplace ruptu1cd 01 da111aged grdvel bJgs dntl
remove the deb11s tro111 th<' 11gh1-ol-way 11nrned1ately
§9!1
Protecting water resources improves and preserve~ ~an Diego\
quality oflife for our children and tuturt' generations
Q uestions? Contact Your Assigned Inspector or the
Development Services Field Office at (858) 492-5070.
MunicipaC)>de §43.0301, (Storm Water Managemer)nd Discharge Control ordinance)
:harges at work sites from flowing into storm drains and polluting neighborhood
:ean. To stay in compliance with
ct on schedule, make sure
ioning. Sites must be
ly.
,e site must be contained and
or stucco in the sewer or
t brushes in the street or dump
hes and spray guns must be
:erials drum or back into the
y.
(weighted down) are
e used to surround the
:ontrols with vehicles or heavy
ials . Keep extra absorbent
: to quickly pick up unintended spills.
'STAGING AREAS
ite at all times. Building
not in use to prevent runoff
J be prevented by monitoring
nts to ensure that BMPs are
ety issues.
lMITS
,m the face of the curb to the
ipment in the right-of-way (such
ontrol Permit. To apply, contact the
~) 446-5150. Forms are also available
t-services in the "Forms and Guidelines"
e Bulletin #177, How to Obtain a
ntrol for information.
The disposal of "wet" constn
washout area. This includes paint, ·
impervious liner to contain the w«
areas. The washout area must bt:
,_ [' compliance. All dried mal
Mounds of dirt or grc
daily with water to preven
(October 1st -April 30tl
those areas that are acti\
action plan including addi1
the site during a rain event. S
to prevent ·
------EART l
All earthmoving equipme1
of any equipment shoL
and dirt trails left b,
/ Storm drains mus·
~~-· ··~·16:m.?.:'>~b controls, such as
used for inlet prot
through). Repla
remove the d
n ___ .._ __ .... !---·'r~•.,.... ...... ""'"' ......... ,,...,....." : ....................... "",Tr." n ...... A ~ ... r\C\rl ......... T~C' c .... ,.
Site Design & Landscape Planning SD-10
Description
Design Objectives
0 Maximize Infiltration
0 Provide Retention
0 Slow Runoff
---
0 Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
Each project site possesses unique topographic, hydrologic, and vegetative features, some of
which are more suitable for development than others. Integrating and incorporating
appropriate landscape planning methodologies into the project design is the most effective
action that can be done to minimize surface and groundwater contamination from stormwater.
Approach
Landscape planning should couple consideration ofland suitability for urban uses with
consideration of community goals and projected growth. Project plan designs should conserve
natural areas to the extent possible, maximize natural water storage and infiltration
opportunities, and protect slopes and channels.
Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for
development or redevelopment.
Design Considerations
Design requirements for site design and landscapes planning
should conform to applicable standards and specifications of
agencies with jurisdiction and be consistent with applicable
General Plan and Local Area Plan policies. -
ASQ
January 2003 California Stormwater BMP Handbook
New Development and Redevelopment
www .cabmphandbooks.com
1 of 4
SD-10 Site Design & Landscape Planning
Designing New Installations
Begin the development of a plan for the landscape unit with attention to the following general
principles:
• Formulate the plan on the basis of clearly articulated community goals. Carefully identify
co nflicts and choices between retaining and protecting desired resources and community
growth.
• Map and assess land suitability for urban uses. Include the following landscape features in
the assessment: wooded land, open unwooded land, steep slopes, erosion-prone soils,
foundation suitability, soil suitability for waste disposal, aquifers, aquifer recharge areas,
wetlands, floodplains, surface waters, agricultural lands, and various categories of urban
land use. When appropriate, the assessment can highlight outstanding local or regional
resources that the community determines should be protected (e.g., a scenic area,
recreational area, threatened species habitat, farmland, fish run). Mapping and assessment
should recognize not only these resources but also additional areas needed for their
sustenance.
Project plan designs should conserve natural areas to the extent possible, maximize natural
water storage and infiltration opportunities, and protect slopes and channels.
Conserve Natural Areas during Landscape Planning
If applicable, the following items are required and must be implemented in the site layout
during the subdivision design and approval process, consistent with applicable General Plan and
Local Area Plan policies:
• Cluster development on least-sensitive portions of a site while leaving the remaining land in
a natural undisturbed condition.
• Limit clearing and grading of native vegetation at a site to the minimum amount needed to
build lots, allow access, and provide fire protection.
• Maximize trees and other vegetation at each site by planting additional vegetation, clustering
tree areas, and promoting the use of native and/or drought tolerant plants.
• Promote natural vegetation by using parking lot islands and other landscaped areas.
• Preserve riparian areas and wetlands.
Maximize Natural Water Storage and Infiltration Opportunities Within the Landscape Unit
• Promote the conservation of forest cover. Building on land that is already deforested affects
basin hydrology to a lesser extent than converting forested land. Loss of forest cover reduces
interception storage, detention in the organic forest flo or layer, and water losses by
evapotranspiration, resulting in large peak runoff increases and either their negative effe cts
or the expense of countering them with structural solutions.
• Maintain natural storage reservoirs and drainage corridors, including depressions, areas of
permeable soils, swales, and intermittent streams. Develop and implement policies and
2 of 4 California Stormwater BMP Handbook
New Development and Redevelopment
www .cabmphandbooks.com
January 2003
Site Design & Landscape Planning SD-10
regulations to discourage the cleari ng, filling, and channelization of these features. Utilize
them in drainage networks in preference to pipes, culverts, and engineered ditches.
• Evaluating infiltration opportunities by referring to the stormwater management manual for
the jurisdiction and pay pa1ticular attention to the selection criteria for avoiding
groundwater contamination, poor soils, and hydrogeological conditions that cause these
facil ities to fa il. If necessary, locate developments with large amounts of impervious
surfaces or a potential to produce relatively contaminated runoff away from groundwater
recharge areas.
Protection of Slopes and Channels during Landscape Design
• Convey runoff safe ly from the tops of slopes.
• Avoid disturbing steep or unstable slopes.
• Avoid disturbing natural channels.
• Stabilize disturbed slopes as quickly as possible.
• Vegetate slopes with native or drought tolerant vegetation.
• Control and treat flows in landscaping and/ or other controls prior to reaching existing
natural drainage systems.
• Stabilize temporary and permanent channel crossings as quickly as possible, and ensure that
increases in run-off velocity and frequency caused by the project do not erode the channel.
• Install energy dissipaters, such as rip rap, at the outlets of new storm drains, culverts,
conduits, or channels that enter unlined channels in accordance with applicable
specifications to minimize erosion. Energy dissipaters shall be installed in such a way as to
minimize impacts to receiving waters.
• Line on-site conveyance channels where appropriate, to reduce erosion caused by increased
flow velocity due to increases in tributary impervious area. The first choice for linings
should be grass or some other vegetative surface, since these materials not only reduce
runoff velocities, but also provide water quality benefits from filtration and infiltration. If
velocities in the channel are high enough to erode grass or other vegetative linings, riprap,
concrete, soil cement, or geo-grid stabilization are other alternatives.
• Consider other design principles that are comparable and equally effective.
Redeveloping Existing Installations
Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.)
define "redevelopment" in terms of amounts of additional impervious area, increases in gross
floor area and/ or exterior construction, and land disturbing activities with structural or
impervious surfaces. The definition of" redevelopment" must be consulted to determine
whether or not the requirements for new development apply to areas intended for
redevelopment. If the definition applies, the steps outlined under "designing new installations"
above should be followed.
January 2003 California 5tormwater BMP Handbook
New Development and Redevelopment
www .cabmphandbooks.com
3 of 4
SD-10 Site Design & Landscape Planning
Redevelopment may present significant opportunity to add features which had not previously
been implemented. Examples include incorporation of depressions, areas of permeable soils,
and swales in newly redeveloped areas. While some site constraints may exist due to the st atus
of already existing infrastructure, opportunities should not be missed to maximize infiltration,
slow runoff, reduce imper\ious areas, disconnect directly connected impervious areas.
Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County
Department of Public Works, May 2002.
Stormwater Management Manual for Western Washington, Washington State Department of
Ecology, August 2001.
Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of
San Diego, and Cities in San Diego County, February 14, 2002.
Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood
Control District, and the Incorporated Cities of Orange County, Draft February 2003.
Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures,
July 2002.
4 of 4 Ca lifornia Stormwater BMP Handbook
New Development and Redevelopment
www .cabmphandbooks.com
January 2003
Roof Runoff Controls
Rain Garden
Description
Various roof runoff controls are available to address storm water
SD-11
Design Objectives
0 Maximize Infiltration
0 Provide Retention
0 Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
0 Contain Pollutants
Collect and Convey
that drains off rooftops. The objective is to reduce the total volume and rate of runoff from
individual lots, and retain the pollutants on site that may be picked up from roofing materials
and atmospheric deposition. Roof runoff controls consist of directing the roof runoff away from
paved areas and mitigating flow to the storm drain system through one of several general
approaches: cisterns or rain barrels; dry wells or infiltration trenches; pop-up emitters, and
foundation planting. The first three approaches require the roof runoff to be contained in a
gutter and downspout system. Foundation planting provides a vegetated strip under the drip
line of the roof.
Approach
Design of individual lots for single-family homes as well as lots for higher density residential and
commercial structures should consider site design provisions for containing and infiltrating roof
runoff or directing roof runoff to vegetative swales or buffer areas. Retained water can be reused
for watering gardens, lawns, and trees. Benefits.to the environment include reduced demand for
potable water used for irrigation, improved stormwater quality, increased groundwater
recharge, decreased runoff volume and peak flows, and decreased flooding potential.
Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for
development or redevelopment.
Design Considerations
Designing New Installations
Cisterns or Rain Barrels
One method of addressing roof runoff is to direct roof downspouts
to cisterns or rain barrels. A cistern is an above ground storage
vessel with either a manually operated valve or a permanently
open outlet. Roof runoff is temporarily stored and then released
for irrigation or infiltration between storms. The number of rain ASQ
January 2003 California Stormwater BMP Handbook
New Development and Redevelopment
www .cabmphandbook.com
1 of 3
SD-11 Roof Runoff Controls
barrels needed is a function of the rooftop area. Some low impact developers recommend that
every house have at least 2 rain barrels, with a minimum storage capacity of 1000 liters. Roof
barrels serve several purposes including mitigating the first flush from the roof which has a high
volume, amount of contaminants, and thermal load. Several types of rain barrels are
commercially available. Consideration must be given to selecting rain barrels that are vector
proof and childproof. In addition, some barrels are designed with a bypass valve that filters out
grit and other contaminants and routes overflow to a soak-away pit or rain garden.
If the cistern has an operable valve, the valve can be closed to store storm water for irrigation or
infiltration between storms. This system requires continual monitoring by the resident or
grounds crews, but provides greater flexibility in water storage and metering. If a cistern is
provided with an operable valve and water is stored inside for long periods, the cistern must be
covered to prevent mosquitoes from breeding.
A cistern system with a permanently open outlet can also provide for metering storm water
runoff. If the cistern outlet is significantly smaller than the size of the downspout inlet (say 1/4 to
V2 inch diameter), runoff will build up inside the cistern during storms, and will empty out
slowly after peak intensities subside. This is a feasible way to mitigate the peak flow increases
caused by rooftop impervious land coverage, especially for the frequent, small storms.
Dry wells and Infiltration Trenches
Roof downspouts can be directed to dry wells or infiltration trenches. A dry well is constructed
by excavating a hole in the ground and filling it with an open graded aggregate, and allowing the
water to fill the dry well and infiltrate after the storm event. An underground connection from
the downspout conveys water into the dry well, allowing it to be stored in the voids. To
minimize sedimentation from lateral soil movement, the sides and top of the stone storage
matrix can be wrapped in a permeable filter fabric, though the bottom may remain open. A
perforated observation pipe can be inserted vertically into the dry well to allow for inspection
and maintenance.
In practice, dry wells receiving runoff from single roof downspouts have been successful over
long periods because they contain very little sediment. They must be sized according to the
·amount of rooftop runoff received, but are typically 4 to 5 feet square, and 2 to 3 feet deep, with
a minimum of 1-foot soil cover over the top (maximum depth of 10 feet).
To protect the foundation, dry wells must be set away from the building at least 10 feet. They
must be installed in solids that accommodate infiltration. In poorly drained soils, dry wells have
very limited feasibility.
Infiltration trenches function in a similar manner and would be particularly effective for larger
roof areas. An infiltration trench is a long, narrow, rock-filled trench with no outlet that receives
storm water runoff. These are described under Treatment Controls.
Pop-up Drainage Emitter
Roof downspouts can be directed to an underground pipe that daylights some distance from the
building foundation, releasing the roof runoff through a pop-up emitter. Similar to a pop-up
irrigation head, the emitter only opens when there is flow from the roof. The emitter remains
flush to the ground during dry periods, for ease of lawn or landscape maintenance.
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Roof Runoff Controls SD-11
Foundation Planting
Landscape planting can be provided around the base to allow increased opportunities for
stormwater infiltration and protect the soil from erosion caused by concentrated sheet flow
coming off the roof. Foundation plantings can reduce the physical impact of water on the soil
and provide a subsurface matrix of roots that encourage infiltration. These plantings must be
sturdy enough to tolerate the heavy runoff sheet flows, and periodic soil saturation.
Redeveloping Existing Installations
Various jurisdictional stormwater management and mitigation plans (SUS MP, WQMP, etc.)
define "redevelopment" in terms of amounts of additional impervious area, increases in gross
floor area and/ or exterior construction, and land disturbing activities with structural or
impervious surfaces. The definition of·' redevelopment" must be consulted to determine
whether or not the requirements for new development apply to areas intended for
redevelopment. If the definition applies, the steps outlined under "designing new installations"
above should be followed.
Supplemental Information
Examples
• City of Ottawa's Water Links Smface -Water Quality Protection Program
• City of Toronto Downspout Disconnection Program
• City of Boston, MA, Rain Barrel Demonstration Program
Other Resources
Hager, Marty Catherine, Stormwater, "Low-Impact Development", January/February 2003.
www.stormh20.com
Low Impact Urban Design Tools, Low Impact Development Design Center, Beltsville, MD.
www.lid-stormwater.net
Start at the Source, Bay Area Storm water Management Agencies Association, 1999 Edition
January 2003 California Stormwater BMP Handbook
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www .cabmphandbook.com
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Efficient Irrigation SD-12
Design Objectives
0 Maximize Infiltration
0 Provide Retention
0 Slow Runoff
Minimize Impervious Land
Coverage
Prohibit Dumping of Improper
Materials
Description
Contain Pollu tants
Collect and Convey
Irrigation water provided to landscaped areas may result in excess irrigation water being
conveyed into stormwater drainage systems.
Approach
Project plan designs for development and redevelopment should include application methods of
irrigation water that minimize runoff of excess irrigation water into the storm water conveyance
system.
Suitable Applications
Appropriate applications include residential, commercial and industrial areas planned for
development or redevelopment. (Detached residential single-family homes are typically
excluded from this requirement.)
Design Considerations
Designing New Installations
The following methods to reduce excessive irrigation runoff should be considered, and
incorporated and implemented where determined applicable and feasible by the Permittee:
• Employ rain-triggered shutoff devices to prevent irrigation after precipitation.
• Design irrigation systems to each landscape area's specific water requirements.
• Include design featuring flow reducers or shutoff valves
triggered by a pressure drop to control water loss in the event
of broken sprinkler heads or lines.
• Implement landscape plans consistent with County or City
water conservation resolutions, which may include provision
of water sensors, programmable irrigation times (for sho rt
cycles), etc.
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SD-12 Efficient Irrigation
• Design timing and application methods of irrigation water to minimize the runoff of excess
irrigation water into the storm water drainage system.
• Group plants with similar water requirements in order to reduce excess irrigation runoff and
promote surface filtration. Choose plants with low irrigation requirements (for example,
native or drought tolerant species). Consider design features such as:
Using mulches (such as wood chips or bar) in planter areas without ground cover to
minimize sediment in runoff
Installing appropriate plant materials for the location, in accordance with amount of
sunlight and climate, and use native plant materials where possible and/or as
recommended by the landscape architect
Leaving a vegetative barrier along the property boundary and interior watercourses, to
act as a pollutant filter, where appropriate and feasible
Choosing plants that minimize or eliminate the use of fertilizer or pesticides to sustain
growth
• Employ other comparable, equally effective methods to reduce irrigation water runoff.
Redevelopin g Existing Installations
Various jurisdictional storm water management and mitigation plans (SUS MP, WQMP, etc.)
define "redevelopment" in terms of amounts of additional impervious area, increases in gross
floor area a nd/or exterior construction, and land disturbing activities with structural or
impervious surfaces. The definition of" redevelopment" must be consulted to determine
whether or not the requirements for new development apply to areas intended for
redevelopment. If the definition applies, the steps outlined under "designing new installations"
above should be followed.
Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County
Department of Public Works, May 2002.
Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of
San Diego, and Cities in San Diego County, February 14, 2002.
Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood
Control District, and the Incorporated Cities of Orange County, Draft February 2003.
Ventura Countywide Technical Guidance Manual fo r Stormwater Quality Control Measures,
July 2002.
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Storm Drain Signage
Description
SD-13
Design Objectives
Maximize Infiltration
Provide Retention
Slow Runoff
Minimize Impervious Land
Coverage
0 Prohibit Dumping of Improper
Materials
Contain Pollutants
Collect and Convey
Waste materials dumped into storm drain inlets can have severe impacts on receiving and
ground waters. Posting notices regarding discharge prohibitions at storm drain inlets can
prevent waste dumping. Storm drain signs and stencils are highly visible source controls that
are typically placed directly adjacent to storm drain inlets.
Approach
The stencil or affixed sign contains a brief statement that prohibits dumping of improper
materials into the urban runoff conveyance system. Storm drain messages have become a
popular method of alerting the public about the effects of and the prohibitions against waste
disposal.
Suitable Applications
Stencils and signs alert the public to the destination of pollutants discharged to the storm drain.
Signs are appropriate in residential, commercial, and industrial areas, as well as any other area
where contributions or dumping to storm drains is likely.
Design Considerations
Storm drain message markers or placards are recommended at all storm drain inlets within the
boundary of a development project. The marker should be placed in clear sight facing toward
anyone approaching the inlet from either side. All storm drain inlet locations should be
identified on the development site map.
Designing New Installations
The fo llowing methods should be considered for inclusion in the
project design and show on project plans:
• Provide stenciling or labeling of all storm drain inlets and
catch basins, constructed or modified, within the project area
with prohibitive language. Examples include "NO DUMPING
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SD-13 Storm Drain Signage
-DRAINS TO OCEAN" and/or other graphical icons to discourage illegal dumping.
• Post signs with prohibitive language and/or graphical icons, which prohibit illegal dumping
at public access points along cha nnels and creeks within the project area.
Note -Some local agencies have approved specific signage and/or storm drain message placards
for use. Consult local agency storm water staff to determine specific requirements for placard
types and methods of application.
Redeveloping Exi.sting Installations
Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.)
define "redevelopment" in terms of amounts of additional impervious area, increases in gross
Roor area and/or exterior construction, and land disturbing activities with structural or
impervious surfaces. If the project meets the definition of "redevelopment", then the
requirements stated under " designing new installations" above should be included in all project
design plans.
Additional Information
Maintenance Considerations
• Legibility of markers and signs should be maintained. If required by the agency with
jurisdiction over the project, the owner/operator or homeowner's association should enter
into a maintenance agreement with the agency or record a deed restriction upon the
property title to maintain the legibility of placards or signs.
Placement
• Signage on top of curbs tends to weather a nd fade.
• Signage on face of curbs tends to be worn by contact with vehicle tires and sweeper brooms.
Supplemental Information
Examples
• Most MS4 programs have storm drain signage programs. Some MS4 programs will provide
stencils, or arrange for volunteers to stencil storm drains as part of their outreach program.
Other Resources
A Manual for the Standard Urban Stormwater Mitigation Plan (SUSM P), Los Angeles County
Department of Public Works, May 2002.
Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of
San Diego, and Cities in San Diego County, February 14, 2002.
Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood
Control District, and the Incorporated Cities of Orange County, Draft February 2003.
Ventura Countywide Technical Guidance Manual fo r Stormwater Quality Control Measures,
July 2002.
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January 2003
Non-Stor mwater Discharges
I
Description
I ;
U!><· //re hv1i;efl~1/J i \ 1,ft·
r~ ·.1/'111°11/ F.1crltty
Non-stormwater discharges are those flows that do not consist
entirely of stormwater. Some non-stormwater discharges do not
include pollutants and may be discharged to the storm drain.
These include uncontaminated groundwater and natural springs.
There are also some non-stormwater discharges that typically do
not contain pollutants and may be discharged to the storm drain
with conditions. These include car washing, air conditioner
condensate, etc. However there are certain non-stormwater
discharges that pose environmental co ncern. These discharges
may originate from illegal dumping or from internal floor drains,
appliances, industrial processes, sinks, and toilets that are
co nnected to the nearby storm drainage system. These
discharges (which may include: process waste waters, cooling
waters, wash waters, and sanitary wastewater) can carry
substances such as paint, oil , fuel and other automotive fl uids,
chemicals and other pollutants into storm drains. They can
generally be detected through a combination of detection and
elimination. The ultimate goal is to effectively eliminate non-
stormwater discharges to the stormwater drainage system
through implementation of measures to detect, correct, and
enforce against illicit connections and illegal discharges of
pollutants on streets and into the storm drain system and creeks.
Approach
Initially the industry must make an assessment of non-
stormwater discharges to determine which types must be
eliminated or addressed through BMPs. The focus of the
following approach is in the elimination of non-storm water
discharges.
January 2003 California Stormwater BMP Handbook
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SC-10
Objectives
• Cover
• Contain
• Educate
• Reduce/Minimize
• Product Substitution
Targeted Constituents
Sediment
Nutrients
Trash
Metals
Bacteria
Oil and Grease
Organics
./
./
./
./
Stormwater
Quality
Association
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SC-10 Non-Stormwater Discharges
Pollution Prevention
• Ensure that used oil, used antifreeze, and hazardous chemical recycling programs are being
implemented. Encourage litter control.
Suggested Protocols
Recommended Complaint Investigation Equipment
• Field Screening Analysis
pH paper or meter
Commercial stormwater pollutant screening kit that can detect for reactive phosphorus,
nitrate nitrogen, ammonium nitrogen, specific conductance, and turbidity
Sample jars
Sample collection pole
A tool to remove access hole covers
• Laboratory Analysis
Sample cooler
Ice
Sample jars and labels
Chain of custody forms
• Documentation
Camera
Notebook
Pens
Notice of Violation forms
Educational materials
General
• Develop clear protocols and lines of communication for effectively prohibiting non-
stormwater discharges, especially those that are not classified as hazardous. These are often
not responded to as effectively as they need to be.
• Stencil or demarcate storm drains, where applicable, to prevent illegal disposal of pollutants.
Storm drain inlets should have messages such as "Dump No Waste Drains to Stream"
stenciled or demarcated next to them to warn against ignorant or intentional dumping of
pollutants into the storm drainage system.
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Non-Stormwater Discharges SC-10
• See SC44 Stormwater Drainage System Maintenance for additional information.
Illicit Connections
• Locate discharges from the industrial storm drainage system to the municipal storm drain
system through review of "as-built" piping schematics.
• Isolate problem areas and plug illicit discharge points.
• Locate and evaluate all discharges to the industrial storm drain system.
Visual Inspection and Inventory
• Inventory and inspect each discharge point during d1y weather.
• Keep in mind that drainage from a storm event can continue for a day or two following the
end of a storm and groundwater may infiltrate the underground storm water collection
system. Also, non-stormwater discharges are often intermittent and may require periodic
inspections.
Review Infield Piping
• A review of the "as-built" piping schematic is a way to determine if there are any connections
to the storm water collection system.
• Inspect the path of floor drains in older buildings.
Smoke Tes ting
• Smoke testing of wastewater and storm water collection systems is used to detect
connections between the two systems.
• During dry weather the stormwater collection system is filled with smoke and then traced to
sources. The appearance of smoke at the base of a toilet indicates that there may be a
connection between the sanitary and the stormwater system.
Dye Testing
• A dye test can be performed by simply releasing a dye into either your sanitary or process
wastewater system and examining the discharge points from the stormwater collection
system for discoloration.
TV Inspection of Drainage System
• TV Cameras can be employed to visually identify illicit connections to the industrial storm
drainage system .
Illegal Dumping
• Regularly inspect and clean up hot spots and other storm drainage areas where illegal
dumping and disposal occurs.
• On paved surfaces, clean up spills with as little water as possible. Use a rag for small spills, a
damp mop fo r 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 a certified laundry (rags) or disposed of as hazardous waste.
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SC-10 Non-Stormwater Discharges
• Never hose down or bury dry material spills. Sweep up the material and dispose of properly.
• Use adsorbent materials on small spills rather than hosing down the spill. Remove the
adsorbent materials promptly and dispose of properly.
• For larger spills, a private spill cleanup company or Hazmat team may be necessary.
Once a site has been cleaned:
• Post "No Dumping" signs with a phone number for reporting dumping and disposal.
• Landscaping and beautification efforts of hot spots may also discourage future dumping, as
well as provide open space and increase property values.
• Lighting or barriers may also be needed to discourage future dumping.
• See fact sheet SC11 Spill Prevention, Control, and Cleanup.
Inspection
• Regularly inspect and clean up hot spots and other storm drainage areas where illegal
dumping and disposal occurs.
• Conduct field investigations of the industrial storm drain system for potential sources of
non-stormwater discharges.
• Pro-actively conduct investigations of high priority areas. Based on historical data, prioritize
specific geographic areas and/or incident type for pro-active investigations.
Reporting
• A database is useful for defining and tracking the magnitude and location of the problem.
• Report prohibited non-storm water discharges observed during the course of normal daily
activities so they can be investigated, contained, and cleaned up or eliminated.
• Document that non-storm water discharges have been eliminated by recording tests
performed, methods used, dates of testing, and any on-site drainage points observed.
• Document and report annually the results of the program.
• Maintain documentation of illicit connection and illegal dumping incidents, including
significant conditionally exempt discharges that are not properly managed.
Training
• Training of technical staff in identifying and documenting illegal dumping incidents is
required.
• Consider posting the quick reference table near storm drains to reinforce training.
• Train employees to identify non-stormwater discharges and report discharges to the
appropriate departments.
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Non-Stormwater Discharges SC-10
• Educate employees about spill prevention and cleanup.
• Well-trained employees can reduce human errors that lead to accidental releases or spills.
The employee should have the tools and knowledge to immediately begin cleaning up a spill
should one occur. Employees should be familiar with the Spill Prevention Control and
Countermeasure Plan.
• Determine and implement appropriate outreach efforts to reduce non-permissible non-
stormwater discharges.
• Conduct spill response drills annually (if no events occurred to evaluate your plan) in
cooperation with other industries.
• When a responsible party is identified, educate the party on the impacts of his or her actions.
Spill Response and Prevention
• See SC11 Spill Prevention Control and Cleanup.
Other Considerations
• Many facilities do not have accurate, up-to-date schematic drawings.
Requirements
Costs (including capital and operation & maintenance)
• The primary cost is for staff time and depends on how aggressively a program is
implemented.
• Cost for containment and disposal is borne by the discharger.
• Illicit connections can be difficult to locate especially if there is groundwater infiltration.
• Indoor floor drains may require re-plumbing if cross-connections to storm drains are
detected.
Maintenance (including administrative and staffing)
• Illegal dumping and illicit connection violations requires technical staff to detect and
investigate them.
Supplemental Information
Further Detail of the BMP
Illegal Dumping
• Substances illegally dumped on streets and into the storm drain systems and creeks include
paints, used oil and other automotive fluids, construction debris, chemicals, fresh concrete,
leaves, grass clippings, and pet wastes. All of these wastes cause stormwater and receiving
water quality problems as well as clog the storm drain system itself.
• Establish a system for tracking incidents. The system should be designed to identify the
following:
Illegal dumping hot spots
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SC-10 Non-Stormwater Discharges·
Types and quantities (in some cases) of wastes
Patterns in time of occurrence (time of day/night, month, or year)
Mode of dumping (abandoned co ntainers, "midnight dumping" from moving vehicles,
direct dumping of materials, accidents/spills)
Responsible parties
One of the keys to success of reducing or eliminating illegal dumping is increasing the number of
people at the facility who are aware of the problem and who have the tools to at least identify the
incident, if not correct it. Therefore, train field staff to recognize and report the incidents.
What constitutes a "non-stormwater" discharge?
• Non-storm water discharges to the stormwater collection system may include any water used
directly in the manufacturing process (process wastewater), air conditioning condensate and
coolant, non-contact cooling water, cooling equipment condensate, outdoor secondary
containment water, vehicle and equipment wash water, sink and drinking fountain
wastewater, sanitary wastes, or other wastewaters.
Permit Requirements
• Facilities subject to stormwater permit requirements must include a certification that the
stormwater coll ection system has been tested or evaluated for the presence of non-
stormwater discharges. The State's General Industrial Stormwater Permit requires that non-
stormwater discharges be eliminated prior to implementation of the facility's SWPPP.
Performance Evaluation
• Review annually internal investigation results; assess whether goals were met and what
changes or improvements are necessary.
• Obtain feedback from personnel assigned to respond to, or inspect for, illicit connections
and illegal dumping incidents.
References and Resources
California's Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.html
Clark County Storm Water Pollution Control Manual
http://www.co.clark.wa.us/pubworks/bmpman.pdf
King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htm
Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.org
The Storm Water Managers Resource Center http://M-vw.stormwatercenter.net/
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Vehicle and Equipment Cleaning SC-21
Photo Credit. Geoff Brosseau
Description
Wash water from vehicle and equipment cleaning activities
performed outdoors or in areas where wash water flows onto the
ground can contribute toxic hydrocarbons and other organic
compounds, oils and greases, nutrients, phosphates, heavy
metals, and suspended solids to storm water runoff. Use of the
procedures outlined below can prevent or reduce the discharge of
pollutants to stormwater during vehicle and equipment cleaning.
Approach
Reduce potential for pollutant discharge through source control
pollution prevention and BMP implementation. Successful
implementation depends on effective training of employees on
applicable BMPs and general pollution prevention strategies and
objectives
Polluti.on Preventi.on
• If possible, use properly maintained off-site commercial
washing and steam cleaning businesses whenever possible.
These businesses are better equipped to handle and properly
dispose of the wash waters.
• Good housekeeping practices can minimize the risk of
contamination from wash water discharges.
January 2003 California Stormwater BMP Handbook
Industrial and Commercial
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Objectives
• Cover
• Contain
• Educate
• Reduce/Minimize
• Product Substitution
Targeted Constituents
Sediment ./
Nutrients ./
Trash
Metals
Bacteria
Oil and Grease
Organics
./
./
./
Stormwater
Quality
Association
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SC-21 Vehicle and Equipment Cleaning
Suggested Protocols
General
• Use biodegradable, phosphate-free detergents for washing ve hicles as appropriate.
• Mark the area clearly as a wash area.
• Post signs stating that only washing is allowed in wash area.
• Provide trash container in wash area.
• Map on-site storm drain locations to avoid discharges to the storm drain system.
• Emphasize the connection between the storm drain system and runoff, help reinforce that
car washing activities affect local water quality through storm drain stenciling programs.
Vehicle and Equipment Cleaning
• Have all vehicle washing done in areas designed to collect and hold the wash and rinse water
or effluent generated. Recycle, collect or treat wash water effluent prior to discharge to the
sanitary sewer system.
• If washing/ cleaning must occur on-site, consider washing vehicle equipment inside the
building or on an impervious surface to control the targeted constituents by directing them
to the sanitary sewer.
• If washing must occur on-site and outdoor:
Use designated paved wash areas. Designated wash areas must be well marked with
signs indicating where and how washing must be done. This area must be covered or
bermed to collect the wash water and graded to direct the wash water to a treatment or
disposal facility.
Do not conduct oil changes and other engine maintenance in the designated washing
area. Perform these activities in a place designated for oil change and maintenance
activities.
Cover the wash area when not in use to prevent contact with rain water.
• Install sumps or drain lines to collect wash water for treatment.
• Use hoses with nozzles that automatically turn off when left unattended.
• Do not permit steam cleaning wash water to enter the storm drain.
• Pressure and steam clean off-site to avoid generating runoff with high pollutant
concentrations. If done on-site, no pressure cleaning and steam cleaning should be done in
areas designated as wellhead protection areas for public water supply.
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Drainage System Maintenance SC-44
Description
As a consequence of its function, the storm water conveyance
system collects and transports urban runoff and stormwater that
may contain certain pollutants. The protocols in this fact sheet
are intended to reduce pollutants reaching receiving waters
through proper conveyance system operation and maintenance.
Approach
Pollution Prevention
Maintain catch basins, storm water inlets, and other stormwater
co nveyance structures on a regular basis to remove pollutants,
reduce high pollutant concentrations during the first flush of
storms, prevent clogging of the downstream conveyance system,
restore catch basins' sediment trapping capacity, a nd ensure the
system functions properly hydraulically to avoid flooding.
Suggested Protocols
Catch Basins/Inlet Structures
• Staff should regularly inspect facilities to ensure compliance
with the following:
Immediate repair of any deterioration threatening
structural integrity.
Cleaning before the sump is 40% full. Catch basins
should be cleaned as frequently as needed to meet this
standard.
Stenciling of catch basins and inlets (see SC34 Waste
Handling and Disposal).
January 2003 California Stormwater BMP Handbook
Industrial and Commercial
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Objectives
• Cover
• Contain
• Educate
• Reduce/Minimize
Targeted Constituents
Sediment ./
Nutrients
Trash ./
Metals
Bacteria ./
Oil and Grease
Organics
Stormwater
Quality
Association
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SC-44 Drainage System Maintenance
• Clea n catch basins, storm drain inlets, and other conveyance structures before the wet
season to remove sediments and debris accumulated during the summer.
• Conduct inspections more frequently during the wet season for problem areas where
sediment or trash accumulates more often. Clean and repair as needed.
·• Keep accurate logs of the number of catch basins cleaned.
• Store wastes collected from cleaning activities of the drainage system in appropriate
containers or temporary storage sites in a manner that prevents discharge to the storm
drain.
• Dewater the wastes if necessary with outflow into the sanitary sewer if permitted. Water
should be treated with an appropriate filtering device prior to discharge to the sanitary
sewer. If discharge to the sanitary sewer is not allowed, water should be pumped or
vacuumed to a tank and properly disposed. Do not dewater near a storm drain or stream.
Storm Drain Conveyance System
• Locate reaches of storm drain with deposit problems and develop a flushing schedule that
keeps the pipe clear of excessive buildup.
• Collect and pump flushed effluent to the sanitary sewer for treatment whenever possible.
Pump Stations
• Clean all storm drain pump stations prior to the wet season to remove silt and trash.
• Do not allow discharge to reach the storm drain system when cleaning a storm drain pump
station or other facility.
• Conduct routine maintenance at each pump station.
• Inspect, clean, and repair as necessary all outlet structures prior to the wet season.
Open Channel
• Modify storm channel characteristics to improve channel hydraulics, increase pollutant
removals, and enhance channel/creek aesthetic and habitat value.
• Conduct channel modification/improvement in accordance with existing laws. Any person,
government agency, or public utility proposing an activity that will change the natural
(emphasis added) state of any river, stream, or lake in California, must enter into a Steam or
Lake Alteration Agreement with the Department of Fish and Game. The developer-applicant
should also contact local governments (city, county, special districts), other state agencies
(SWRCB, RWQCB, Department of Forestry, Department of Water Resources), and Federal
Corps of Engineers and USFWS.
Illicit Connections and Discharges
• Look for evidence of illegal discharges or illicit connections during routine maintenance of
conveyance system and drainage structures:
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Is there evidence of spills such as paints, discoloring, etc?
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Drainage System Maintenance SC-44
Are the re any odors associated with the drainage system?
Record locations of apparent illegal discharges/illicit connections?
Track flows back to potential dischargers and conduct aboveground inspections. This
can be done through visual inspection of upgradient manholes or alternate techniques
including zinc chl oride smoke testing, fluorometric dye testing, physical inspection
testing, or television camera inspection.
Eliminate the discharge once the origin of flow is established.
• Stencil or demarcate storm drains, where applicable, to prevent illegal disposal of pollutants.
Storm drain inlets should have messages such as "Dump No Waste Drains to Stream"
stenciled next to them to warn against ignorant or intentional dumping of pollutants into the
storm drainage system.
• Refer to fact sheet SC-10 Non-Stormwater Discharges.
Illegal Dumping
• Inspect and clean up hot spots and other storm drainage areas regularly where illegal
dumping and disposal occurs.
• Establish a system for tracking incidents. The system should be designed to identify the
following:
Illegal dumping hot spots
Types and quantities (in some cases) of wastes
Patterns in time of occurrence (time of day/night, month, or year)
Mode of dumping (abandoned containers, "midnight dumping" from moving vehicles,
direct dumping of materials, accidents/spills)
Responsible parties
• Post "No Dumping" signs in problem areas with a phone number for reporting dumping and
disposal. Signs should also indicate fines and penalties for illegal dumping.
• Refer to fact sheet SC-10 Non-Stormwater Discharges.
Training
• Train crews in proper maintenance activities, including record keeping and disposal.
• Allow only properly trained individuals to handle hazardous materials/wastes.
• Have staff involved in detection and removal of illicit connections t rained in the following:
OSHA-required Health and Safety Training (29 CFR 1910.120) plus annual refresher
training (as needed).
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SC-44 Drainage System Maintenance
OSHA Confined Space Entry training (Cal-OSHA Confined Space, Title 8 and Federal
OSHA 29 CFR 1910.146).
Procedural training (fi eld screening, sampling, smoke/dye testing, TV inspection).
Spill Response and Prevention
• Investigate all reports of s pills, leaks, and/or illegal dumping promptly.
• Clean up all spills and leaks using "dry" methods (with absorbent materials and/or rags) or
dig up, rem ove, and properly dispose of contaminated soil.
• Refer to fact sheet SC-11 Spill Prevention, Control, and Cleanup.
Other Considerations (Limitations and Regulations)
• Clean-up activities may create a slight disturbance for local aquatic species. Access to items
and material on private property may be limited. Trade-offs may exist between channel
hydraulics and water quality/riparian habitat. If storm channels or basins are recognized as
wetlands, many activities, including maintenance, may be subject to regulation and
permitting.
• Storm drain flushing is most effective in small diameter pipes (36-inch diameter pipe or less,
depending on water supply and sediment collection capacity). Other considerations
associated with storm drain flu shing may include the availability of a water source, finding a
downstream area to collect sediments, liquid/sediment disposal, and prohibition against
disposal of flus hed effluent to sanitary sewer in some areas.
• Regulations may include adoption of substantial penalties for illegal dumping and disposal.
• Local municipal codes may include sections prohibiting discharge of soil , debris, refuse,
hazardous wastes, and other pollutants into the storm drain system.
Requirements
Costs
• An aggressive catch basin cleaning program could require a significant capital and O&M
budget.
• The elimination of illegal dumping is dependent on the availability, convenience, and cost of
alternative means of disposal. The primary cost is for staff time. Cost depends on how
aggressively a program is implemented. Other cost considerations for an illegal dumping
program include:
4 of 6
Purchase and install ation of signs.
Rental of vehicle(s) to haul illegally-disposed items a nd material to landfi lls.
Rental of heavy equipment to remove larger items (e.g., car bodies) from channels.
Purchase of landfill space to dispose of illegally-dumped items and material.
California Stormwater BMP Handbook
Industrial and Commercial
www .cabmphandbooks.com
January 2003
Drainage System Maintenance SC-44
• Methods used for illicit connect ion detection (smoke testing, dye testing, visual inspection,
and flow monitoring) can be costly and time-consuming. Site-specific factors, such as the
level of impervious area, the density and ages of buildings, and type of land use will
determine the level of investigation necessary.
Maintenance
• Two-person teams may be required to clean catch basins wit h vactor trucks.
• Teams of at least two people plus administrative personnel are required to identify illicit
discharges, depending on t he complexity of the storm sewer system.
• Arrangements must be made for proper disposal of collected wastes.
• Technical staff are required to detect and investigate illegal dumping violations.
Supplemental Information
Further Detail of the BMP
Storm Drain Flushing
Flushing is a common maintenance activity used to improve pipe hydraulics and to remove
pollutants in storm drainage systems. Flushing may be designed to hydraulically convey
accumulated material to strategic locations, such as an open channel, another point where
flushing will be initiated, or the sanitary sewer and the treatment facilities, thus preventing
resuspension and overflow of a portion of the solids during storm events. Flushing prevents
"plug flow" discharges of concentrated pollutant loadings and sediments. Deposits can hinder
the designed conveyance capacity of the storm drain system and potentially cause backwater
conditions in severe cases of clogging.
Storm drain flushing usually takes place along segments of pipe with grades that are too flat to
maintain adequate velocity to keep particles in suspension. An upstream manhole is selected to
place an inflatable device that temporarily plugs the pipe. Further upstream, water is pumped
into the line to create a flushing wave. When the upstream reach of pipe is sufficiently full to
cause a flushing wave, the inflated device is rapidly deflated with the assistance of a vacuum
pump, thereby releasing the backed up water and resulting in the cleaning of the storm drain
segment.
To further reduce impacts of storm water pollution, a second inflatable device placed well
downstream may be used to recollect the water after the force of the flushing wave has
dissipated. A pump may then be used to transfer the water and accumulated material to the
sanitary sewer for treatment. In some cases, an interceptor structure may be more practical or
required to recollect the flushed waters.
It has been found that cleansing efficiency of periodic flush waves is dependent upon flush
volume, flush discharge rate, sewer slope, sewer length, sewer fl ow rate, sewer diameter, and
population density. As a rule of thumb, the length of line to be flushed should not exceed 700
feet. At this maximum recommended length, the percent removal efficiency ranges between 65-
75% for organics and 55-65% for dry weather grit/inorganic material. The percent removal
efficiency drops rapidly beyond that. Water is commonly supplied by a water truck, but fire
hydrants can also supply water. To make the best use of water, it is recommended that
reclaimed water be used or that fire hydrant line flushing coincide with storm sewer flushing.
January 2003 California Stormwater BMP Handbook
Industrial and Commercial
www.cabmphandbooks.com
5 of 6
SC-44 Drainage System Maintenance
References and Resources
California's Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.html
Clark County Storm Water Pollution Control Manual
http://www.co.clark.wa.us/pubworks/bmpman.pdf
Ferguson, B.K. 1991. Urban Stream Reclamation, p. 324-322, Journal of Soil and Water
Conservation.
King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htm
Oregon Association of Clean Water Agencies. Oregon Municipal Stormwater Toolbox fo r
Maintenance Practices. June 1998.
Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.org
The Storm Water Managers Resource Center http://www.stormwatercenter.net
United States Environmental Protection Agency (USEPA). 2002. Pollution Prevention/Good
Housekeeping for Municipal Operations Storm Drain System Cleaning. On line:
http://www.epa.gov/npdes/menuofbmps/poll 16.htm
6 of 6 California Stormwater BMP Handbook
Industrial and Commercial
www.cabmphandbooks.com
January 2003
Infiltration Trench
General Description
An infiltration trench is a long, narrow, rock-filled trench with no
outlet that receives stormwater runoff. Runoff is stored in the
void space between the stones and infiltrates through the bottom
and into the soil matrix. Infiltration trenches perform well for
removal of fine sediment and associated pollutants.
Pretreatment using buffer strips, swales, or detention basins is
important for limiting amounts of coarse sediment entering the
trench which can clog and render the trench ineffective.
Inspection/Maintenance Considerations
Frequency of clogging is dependant on effectiveness of
pretreatment, such as vegetated buffer strips, at removing
sediments. See appropriate maintenance factsheets for
associated pretreatment. If the trench clogs, it may be necessary
to remove and replace all or part of the fil ter fabric and possibly
the coarse aggregate. Clogged infiltration trenches with surface
standing water can become a nuisance due to mosquito breeding.
Maintenance efforts associated with infiltration trenches should
include frequent inspections to ensure that water infiltrates into
the subsurface completely at a recommended infiltration rate of
72 hours or less to prevent creating mosquito and other vector
habitats. Most of the maintenance should be concentrated on the
pretreatment practices, such as buffer strips and swales
upstream of the trench to ensure that sediment does not reach
the infiltration trench. Regular inspection should determine if
the sediment removal structures require routine maintenance.
Infiltration trenches should not be put into operation until the
upstream tributary area is stabilized.
January 2003 California Stormwater BMP Handbook
Industrial and Commercial
www.cabmphandbooks.com
TC-10
Maintenance Concerns,
Objectives, and Goals
• Accumulation of Metals
• Clogged Soil Outlet Structures
• Vegetation/Landscape
Maintenance
Targeted Constituents
./ Sediment •
./ Nutrients •
./ Trash •
./ Metals •
./ Bacteria •
./ Oil and Grease •
./ Organics •
Legend (Removal Effectiveness)
• Low .. Medium
• High
Stormwater
Quality
Association
1 of 3
TC-10 Infiltration Trench
• Inspect after every major storm for the first few months to ensure proper functionin g.
Drain times should be observed to confirm that designed drain times has been achieved.
• Inspect facility for signs of wetness or damage to structures, signs of petroleum
hydrocarbon contamination, standing water, trash and debris, sediment accumulation,
slope stability, standing water. and material buildup.
• Check for standing water or, if available. check observation wells following 3 days of dry
weather to ensure proper drain time.
• Inspect pretreatment devices and diversion structures for damage, sediment buildup, and
structural damage.
After construction
Semi-annual and
after extreme
events
• Trenches with filt;r fabric should be inspected for sediment deposits by removing a small ,-· ·-~nual
section of the top layer. If inspection indicates that the trench is partially or completely I
clogged, it should be restored to its design condition.
• Repair undercut and eroded areas at inflow and outflow structures.
• Remove sediment, debris, and oil/grease from pretreatment devices and overflow
structures.
• Remove trash, debris, grass clippings, trees, and other large vegetation from the trench
perimeter and dispose of properly.
• Mow and trim vegetation to prevent establishment of woody vegetation, and fo r aesthetic
and vector reasons.
• Clean out sediment traps, forebays, inlet/outlet structures, overflow spillway, and
trenches if necessary.
• Remove grass clippings, leaves, and accumulated sediment from the surface of the trench.
Replace first layer of aggregate and filter fabric if clogging appears only to be at the
surface.
• Clean trench when loss of infiltrative capacity is observed. If drawdown time is observed
to have increased significantly over the design drawdown time, removal of sediment may
be necessary. This is an expensive maintenance activity and the need for it can be
minimized through prevention of upstream erosion.
• If bypass capability is available, it may be possible to regain the infiltration rate in the
short term by providing an extended dry period.
• Seed or sod to restore ground cover.
• Total rehabilitation of the trench should be conducted to maintain storage capacity within
2/3 of the design treatment volume and 72-hour ex:filtration rate limit.
• Trench walls should be excavated to expose clean soil.
• AJl of the stone aggregate and filter fabric or media must be removed. Accumulated
sediment should be stripped from the trench bottom. At this point the bottom may be
scarified or tilled to help induce infiltration. New fabric and clean stone aggregate should
be refilled.
2 of 3 California Stormwater BMP Handbook
Industrial and Commercial
www .cabmphandbooks.com
Standard
maintenance (as
needed)
Semi-annual, more
often as needed
Annual
5-year maintenance
Upon failure
January 2003
Infiltration Trench TC-10
Additional Information
Infiltration practices have historically had a high rate of failure compared to other storm water
management practices. One study co nducted in Prince George's County, Maryland (Galli, 1992),
revealed that less than half of the infiltration trenches investigated (of about 50) were still
functioning properly, and less tha n one-third still functioned properly afters years. Many of
these practices, however, did not incorporate advanced pretreatment. By carefully selecting the
location and improving the design features of infiltration practi ces, their performance should
improve.
It is absolutely critical that settleable particles and fl oatable organic materials be removed from
runoff water before it enters the infiltration trench. The trench will clog and become
nonfunctional if excessive particulate matter is allowed to enter the trench.
Cold climate considerations -see http://www.cwp.org/cold-climates.htm
References
EPA, StormwaterTechnology Fact Sheet -Infiltration Trench . EPA 832-F-99-019. September,
1999.
Metropolitan Council, Urban Small Sites Best Management Practices Manual. Available at:
http://www.metrocouncil.org/environment/Watershed/BMP /manual.htm
Michigan Department of Environmental Quality. Infiltration Trench Factsheet. Available at:
http:l/www.deg.state.mi.us/documents/deg-swg-nps-it.pdf
Montgomery County Department of Environmental Protection. Maintaining Urban Stormwater
Facilities -A Guidebook for Common Ownership Communities. Available at:
http://·www.montgomerycountyrnd.gov/mc/services/dep/Stormwater/maintain.htm
Stormwater Managers Resource Center, Manual Builder. Available at:
http://,.,vww.stormwatercenter.net/intro manual.htm
Stormwater Managers Resource Center. On-line: http://www.stormwatercenter.net
U.S. Department of Agriculture, Natural Resources Conservation Service. Illinois Urban
Manual: A Technical Manual Designed for Urban Ecosystem Protection and Enhancement,
1995.
U.S. Environmental Protection Agency, Post-Construction Stormwater Management in New
Development & Redevelopment BMP Factsheets. Available at:
http://www.cfpub.epa.gov/npdes/stormwater/menuofbmps/bmp files.cfm
Ventura Countywide Stor mwater Quality Management Program, Technical Guidance Manual
for Stormwater Quality Control Measures. July, 2002.
January 2003 California Stormwater BMP Handbook
Industrial and Commercial
www .cabmphandbooks.com
3 of 3
ATTACHMENT 4
City standard Single Sheet BMP (SSBMP) Exhibit
[Use the City's standard Single Sheet BMP Plan.]
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STORM WATER QUALITY MANAGEMENT PLAN
CARLSBAD OCEANVIEW ESTATES, MS 02-05
... OMA EXHIBIT
NE CORNER OF HOOVER STREET & ADAMS STREET, CARLSBAD, CA, 92008 SWMPNO. 16-07
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Land Design Consultants, Inc
Civil Engineering • Subdivision • Land Planning
2335 W. FOOTHILL BLVD., SUITE 1, UPLAND, CA 91786
TEL: (909) 608-7118 • FAX: (909) 946-1137
MAINTENANCE AGREEMENT DOCUMENT: YES_X_NO
RECORDATION NO. -~M~S~0~2-~05~-
PARTY RESPONSIBLE FOR MAINTENANCE:
NAME HENRY OLIVIER CONTACT ______ _
ADDRESS P.O. BOX 9493
SAN BERNARDINO, CA 92427
PHONE NO. (951) 232-4378
PLAN PREPARED BY:
NAME WILL ZHENG
COMPANY W&W LAND DESIGN CONSULTANT, INC.
ADDRESS 2335 W. FOOTHILL BLVD , SUITE 1
Upland, CA 91786
BMP NOTES:
1. THESE BMPS ARE MANDATORY TO BE INSTALLED PER MANUFACTURER'S
RECOMMENDATIONS OR THESE PLANS.
2. NO CHANGES TO THE PROPOSED BMPS ON THIS SHEET WITHOUT PRIOR
APPROVAL FROM THE CITY ENGINEER.
3. NO SUBSTITUTIONS TO THE MATERIAL OR TYPES OR PLANTING TYPES
WITHOUT PRIOR APPROVAL FROM THE CITY ENGINEER.
PHONE NO. _90_9_-6_08_-_71_1_8_x_1_00_1 __ CERTIFICATION------
4. NO OCCUPANCY WILL BE GRANTED UNTIL THE CITY INSPECTION STAFF
HAS INSPECTED THIS PROJECT FOR APPROPRIATE BMP CONSTRUCTION
AND INSTALLATION.
BMP TABLE
BMP ID# BMPTYPE SYMBOL CASQA NO. QUANTITY DRAWING NO. SHEET NO.(S) INSPECTION MAINTENANCE CONSTRUCTION
FREQUENCY FREQUENCY SIGN OFF
TREATMENT CONTROL
CD BIO RETENTION l50d TC-32 BASIN 238 438-2a 3 SEMI-ANNUALLY ANNUALLY
0 BIO RETENTION l50d TC-32 BASIN 176 438-2a 3 SEMI-ANNUALLY ANNUALLY
Q) BIORETENTJON l50_d TC-32 BASIN 156 438-2a 3 SEMI-ANNUALLY ANNUALLY
LOW IMPACT DESIGN (l.l.D.)
.
SOURCE CONTROL
~ ONSITE STORM SD-13 DRAIN INLETS lliI
DRAINAGE MANAGEMENT AREAS (DMAs) SUMMARY
DMA NAME/JD SURFACE TYPE (S) AREA(SF) DMA TYPE
DA1 LANDSCAPE 4978 AREA DRAIN TO BMP
DA2 ROOF 11304 AREA DRAIN TO BMP
DA3 ASPHALT DRIVEWAYS, 2252 AREA DRAIN TO BMP LANDSCAPE
DB1 LANDSCAPE 6132 AREA DRAIN TO BMP
DB2 ROOF 9129 AREA DRAIN TO BMP
DB3 ASPHALT DRIVEWAYS, 2308 AREA DRAIN TO BMP
LANDSCAPE
DC1 ROOF 10415 AREA DRAIN TO BMP
DC2 ASPHALT DRIVEWAYS, 1432 AREA DRAIN TO BMP LANDSCAPE
BMP #1 LANDSCAPE 238 SELF RETAINING AREA
BMP #2 LANDSCAPE 176 SELF RETAINING AREA
BMP #3 LANDSCAPE 156 SELF RETAINING AREA
1--~-1------1-~~~~~~~~~~~-l-----lf----+~--+~~ISH1EETI CITY OF CARLSBAD ISHE1ETSI
ENGINEERING DEPARTMENT :=::==::'...:::===================----=====: SINGLE SHEET BMP SITE PLAN
CARLSBAD OCEANVIEW ESTATES
RECORD COPY PROJECT NO.
MS 02-05
DRAWING NO.
438-2 SW DATE INITIAL DATE INITIAL DATE INlllAL
OlHER APPROVAL CITY APPROVAL INITIAL DATE ENGINEER OF WORK REVISION DESCRIPTION