HomeMy WebLinkAboutMS 2021-0004; ACACIA BEACH HOMES; TRASH CAPTURE SWQMP; 2023-03-01
CITY OF CARLSBAD
TRASH CAPTURE
STORM WATER QUALITY MANAGEMENT PLAN (SWQMP)
FOR
ACACIA BEACH HOMES
MS/2021-0004
DWG NO.: 537-8A
GR. NO.: 2022-0022
ENGINEER OF WORK:
Bryan A. Knapp
R.C.E NO.: 86542
Expiration date: 03-31-2023
___________________
PREPARED FOR:
RREG Investments Series, LLC
Series I041, A Delaware Limited
Liability Company
5315 Avenida Encinas, Suite 200
Carlsbad, CA 92008
(949) 637-3254
PREPARED BY:
PLSA Engineering
1911 San Diego Avenue, Suite 100
San Diego, CA 92110
(858) 259-8212
DATE:
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 Trash Capture Structural BMPs
Attachment 1: Backup for Trash Capture BMPs
Attachment 1a: DMA Exhibit
Attachment 1b: Tabular Summary of DMAs
Attachment 1c: Trash Capture BMP Design Calculations
Attachment 2: Trash Capture BMP Maintenance Thresholds and Actions
Attachment 3: Single Sheet BMP (SSBMP) Exhibit
CERTIFICATION PAGE
GARFIELD HOMES
MS/2021-001
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.
Bryan A. Knapp, R.C.E. NO. 86542, 3/31/2023
PLSA Engineering
Company
Date
ACACIA BEACH HOMESMS/2021-0004
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, ‘STANDARD PROJECT’ with TRASH CAPTURE
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.
A 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.
PROJECT INFORMATION
PROJECT NAME: APN:
ADDRESS:
The project is (check one): New Development Redevelopment
The total proposed disturbed area is: ft2 ( ) acres
The total proposed newly created and/or replaced impervious area is: ft2 ( ) 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 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.
This Box for City Use Only
City Concurrence:
YES NO Date: Project ID:
By:
E-34 Page 1 of 4 REV 02/22
Development Services
Land Development Engineering
1635 Faraday Avenue
442-339-2750
www.carlsbadca.gov
STORM WATER STANDARDS
QUESTIONNAIRE
E-34
INSTRUCTIONS:
E-34 Page 2 of 4 REV 02/22
STEP 1
TO BE COMPLETED FOR ALL PROJECTS
To determine if your project is a “development project”, please answer the following question:
YES NO
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)?
If you answered “yes” to the above question, provide justification below then go to Step 6, mark the 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):
If you answered “no” to the above question, the project is a ‘development project’, go to Step 2.
STEP 2
TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS
To determine if your project is exempt from PDP requirements pursuant to MS4 Permit Provision E.3.b.(3), please answer
the following questions:
Is your project LIMITED to one or more of the following:
YES NO
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; OR
b) Designed and constructed to be hydraulically disconnected from paved streets or roads; OR
c) Designed and constructed with permeable pavements or surfaces in accordance with USEPA
Green Streets guidance?
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?
If you answered “yes” to one or more of the above questions, provide discussion/justification below, then go to Step 6, 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):
If you answered “no” to the above questions, your project is not exempt from PDP, go to Step 3.
E-34 Page 3 of 4 REV 02/22
* Environmentally Sensitive Areas include but are not limited 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 Management
Plan; and any other equivalent environmentally sensitive areas which have been identified by the City.
STEP 3
TO BE COMPLETED FOR ALL NEW OR REDEVELOPMENT PROJECTS
To determine if your project is a PDP, please answer the following questions (MS4 Permit Provision E.3.b.(1)):
YES NO
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 public development projects on public or private 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
development projects on public or private 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
development project includes development on any natural slope that is twenty-five percent or greater.
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 street, road, highway, freeway or driveway surface collectively over the entire project
site? A street, road, highway, freeway or driveway is any paved impervious surface used for the
transportation of automobiles, trucks, motorcycles, and other vehicles.
7. 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 to” 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 project to the ESA (i.e. not commingled with flows from adjacent 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 (ADT) of 100 or more vehicles per day.
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%? (CMC
21.203.040)
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 6, 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, complete the
trash capture questions..
SITE INFORMATION CHECKLIST
Project Summary Information
Project Name Acacia Beach Homes
Project ID MS 2021-0004
Project Address 245 Acacia Avenue
Carlsbad, CA 92008
Assessor's Parcel Number(s) (APN(s)) 204-240-08-00
Project Watershed (Hydrologic Unit) Carlsbad 904
Parcel Area
0.257 Acres ( 11,250 Square Feet)
Description of Existing Site Condition and Drainage Patterns
Select applicable Land Use Category:
High Density Residential
R-23 (15-23 du/ac)
R-30 (23-30 du/ac)
Industrial
PI (Planned Industrial)
Commercial
CF (Community Facilities)
GC (General Commercial)
L (Local Shopping Center)
R (Regional Commercial)
V-B (Village-Barrio)
VC (Visitor Commercial)
O (Office)
VC/OS (Visitor Commercial/Open Space)
Mixed Urban
PI/O (Planned Industrial/Office)
Public Transportation Stations
Description / Additional Information:
Description of Existing Site Topography and Drainage [How is storm water runoff conveyed from
the site? At a minimum, this description should answer (1) whether existing drainage
conveyance is natural or urban; (2) describe existing constructed storm water conveyance
systems, if applicable; and (3) is runoff from offsite conveyed through the site? if so, describe]:
The existing site can be categorized into one major drainage basin, with one primary discharge
location onto Acacia Avenue through a modified SDRSD D-25 curb outlet. Once on Acacia
Avenue runoff from the site travels east until the runoff enters an existing storm drain inlet at the
end of the public street approximately 0.1 miles from the site. Runoff continues in the public storm
water facilities until ultimately reaching the Pacific Ocean.
Description of Proposed Site Development and Drainage Patterns
Project Description / Proposed Land Use and/or Activities:
The project scope includes the demolition of all existing onsite improvements and the
construction of four new condominium units. The construction of the new condominiums will
include site grading, as well as drainage and utility improvements typical to this type of multi-
family residential development.
Does the project include grading and changes to site topography?
Yes
No
Description / Additional Information:
Project proposes to precise grade the site along with some changes to onsite topography the
onsite grading consists of approximately 10 CY of cut and 700 CY of fill, resulting in 690 CY of
import.
Does the project include changes to site drainage (e.g., installation of new storm water
conveyance systems)?
Yes
No
Description / Additional Information:
The proposed drainage system has a series of area drains on the easterly side of the site and a
pcc ribbon gutter on the westerly side of the site that leads to an area drain. Once runoff reaches
the area drains the runoff is routed through a buried storm drain system to one curb outlet that
discharge runoff on Acacia Avenue. Once discharging off the site runoff continues to drain east
down Acacia Avenue similar to predevelopment conditions.
Optional Additional Information or Continuation of Previous Sections As Needed
This space provided for additional information or continuation of information from previous
sections as needed.
E-36 Page 1 of 4 Revised 02/22
Development Services
Land Development Engineering
1635 Faraday Avenue
442-339-2750
www.carlsbadca.gov
STANDARD PROJECT
REQUIREMENT
CHECKLIST
E-36
Project Information
Project Name:
Project ID:
DWG No. or Building Permit No.:
Baseline BMPs for Existing and Proposed Site Features
Complete the Table 1 - Site Design Requirement to document existing and proposed site features and the BMPs to be
implemented for them. All BMPs must be implemented where applicable and feasible. Applicability is generally
assumed if a feature exists or is proposed.
BMPs must be implemented for site design features where feasible. Leaving the box for a BMP unchecked means it
will not be implemented (either partially or fully) either because it is inapplicable or infeasible. Explanations must be
provided in the area below. The table provides specific instructions on when explanations are required.
Table 1 - Site Design Requirement
A. Existing Natural Site Features (see Fact Sheet BL-1)
1. Check the boxes below for each existing feature on
the site.
1. Select the BMPs to be implemented for each identified feature. Explain
why any BMP not selected is infeasible in the area below.
SD-G
Conserve natural
features
SD-H
Provide buffers around waterbodies
Natural waterbodies
Natural storage reservoirs & drainage corridors --
Natural areas, soils, & vegetation (incl. trees) --
B. BMPs for Common Impervious Outdoor Site Features (see Fact Sheet BL-2)
1. Check the boxes below for each
proposed feature.
2. Select the BMPs to be implemented for each proposed feature. If neither BMP SD-B nor
SD-I is selected for a feature, explain why both BMPs are infeasible in the area below.
SD-B
Direct runoff to pervious
areas
SD-I
Construct surfaces from
permeable materials
Minimize size of
impervious areas
Streets and roads Check this box to confirm
that all impervious areas on
the site will be minimized
where feasible.
If this box is not checked,
identify the surfaces that
cannot be minimized in area
below, and explain why it is
Sidewalks & walkways
Parking areas & lots
Driveways
Patios, decks, & courtyards
Hardcourt recreation areas
E-36 Page 2 of 4 Revised 02/22
Other: _______________ infeasible to do so.
C. BMPs for Rooftop Areas: Check this box if rooftop areas are proposed and select at least one BMP
below.
If no BMPs are selected, explain why they are infeasible in the area below.
(see Fact
Sheet BL-3)
SD-B
Direct runoff to pervious areas
SD-C
Install green roofs
SD-E
Install rain barrels
D. BMPs for Landscaped Areas: Check this box if landscaping is proposed and select the BMP below
SD-K Sustainable Landscaping
If SD-K is not selected, explain why it is infeasible in the area below.
(see Fact
Sheet BL-4)
Provide discussion/justification for site design BMPs that will not be implemented (either partially or fully):
Baseline BMPs for Pollutant-generating Sources
All development projects must complete Table 2 - Source Control Requirement to identify applicable requirements for
documenting pollutant-generating sources/ features and source control BMPs.
BMPs must be implemented for source control features where feasible. Leaving the box for a BMP unchecked means it
will not be implemented (either partially or fully) either because it is inapplicable or infeasible. Explanations must be
provided in the area below. The table provides specific instructions on when explanations are required.
Table 2 - Source Control Requirement
A. Management of Storm Water Discharges
1. Identify all proposed outdoor
work areas below
Check here if none are proposed
2. Which BMPs will be used to prevent
materials from contacting rainfall or
runoff?
(See Fact Sheet BL-5)
Select all feasible BMPs for each work area
3. Where will runoff from the
work area be routed?
(See Fact Sheet BL-6)
Select one or more option for each
work area
SC-A
Overhead
covering
SC-B
Separation
flows from
adjacent
areas
SC-C
Wind
protection
SC-D
Sanitary
sewer
SC-E
Containment
system
Other
Trash & Refuse Storage
Materials & Equipment Storage
E-36 Page 3 of 4 Revised 02/22
Loading & Unloading
Fueling
Maintenance & Repair
Vehicle & Equipment Cleaning
Other: _________________
B. Management of Storm Water Discharges (see Fact Sheet BL-7)
Select one option for each feature below:
• Storm drain inlets and catch basins … are not proposed
will be labeled with stenciling or signage to
discourage dumping (SC-F)
• Interior work surfaces, floor drains &
sumps …
are not proposed
will not discharge directly or indirectly to the MS4
or receiving waters
• Drain lines (e.g. air conditioning, boiler,
etc.) …
are not proposed
will not discharge directly or indirectly to the MS4
or receiving waters
• Fire sprinkler test water … are not proposed will not discharge directly or indirectly to the MS4
or receiving waters
Provide discussion/justification for source control BMPs that will not be implemented (either partially or fully):
E-36 Page 4 of 4 Revised 02/22
Form Certification
This E-36 Form is intended to comply with applicable requirements of the city’s BMP Design Manual. I certify that it has
been completed to the best of my ability and accurately reflects the project being proposed and the applicable BMPs
proposed to minimize the potentially negative impacts of this project's land development activities on water quality. I
understand and acknowledge that the review of this form by City staff is confined to a review and does not relieve me as
the person in charge of overseeing the selection and design of storm water BMPs for this project, of my responsibilities for
project design.
Preparer Signature: Date:
Print preparer name:
SUMMARY OF TRASH CAPTURE BMPS
Trash Capture BMPs
All projects subject to trash capture requirements must implement trash capture BMPs (see
Chapter 4 of the BMP Design Manual). Selection of trash capture BMPs must be based on the
selection process described in Chapter 4.
Trash capture 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 trash capture BMPs (see Section 1.12 of the BMP Design Manual). Trash capture 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 trash capture BMP
implementation at the project site in the box below. Then complete the trash capture BMP
summary information sheet for each trash capture BMP within the project (copy the BMP
summary information page as many times as needed to provide summary information for each
trash capture BMP).
Describe the general strategy for trash capture BMP implementation at the site. This information
must describe how the steps for selecting and designing trash capture BMPs presented in
Section 4.4 of the BMP Design Manual were followed, and the results (type of BMPs selected).
There is one grated inlet on site to collect and retain trash in stormwater runoff prior to
discharge onto Acacia Avenue. The trash capture BMPs were selected using the rational
method to determine the flowrate to each grate inlet and CASQA’s list of approved trash
capture BMPs. A single DMA was created for the grate inlet, runoff coefficients were
calculated from a weighted average of the impervious and pervious areas of the site, and
the rainfall intensity was taken from Appendix J of the BMP design manual. The rational
method calculations are included in attachment 1c. After calculating the flow rate, a
Stormtek pipe screen connector was selected based on its treatment flow rate being
higher than then the flowrate the grate inlet will receive. Stormtek’s pipe screen connector
has apertures less than 5mm ensuring capture of all particles 5mm in size or larger.
The one DMA will use Stormtek Pipe Screen Connector ST3 / ST3G (24 X 18 X 12r)
model with a treatment flow of 5.86 cfs. DMA 1 will have a flow of 0.075 cfs reaching the
pipe connector screen.
[Continue on next page as necessary.]
[Continued from previous page – This page is reserved for continuation of description of general
strategy for trash capture BMP implementation at the site.]
Trash Capture BMP Summary Information
BMP ID No. Type of Trash Capture BMP Permit No. Drawing No.
1 Stormtek Pipe Screen Connector
ST3 / ST3G (24 x 18 x 12r)
Flowrate: 5.86 cfs
GR 2022-0022 537-8A
ATTACHMENT 1
BACKUP FOR TRASH CAPTURE BMPS
This is the cover sheet for Attachment 1.
Check which Items are Included behind this cover sheet:
Attachment
Sequence
Contents Checklist
Attachment 1a DMA Exhibit (Required)
See DMA Exhibit Checklist on the
back of this Attachment cover sheet.
(24”x36” Exhibit typically required)
Included
Attachment 1b Tabular Summary of DMAs Showing
DMA ID matching DMA Exhibit, DMA
Area, and DMA Type (Required)*
*Provide table in this Attachment OR
on DMA Exhibit in Attachment 1a
Included on DMA Exhibit in
Attachment 1a
Included as Attachment 1b,
separate from DMA Exhibit
Attachment 1c Trash Capture BMP Design
Worksheets / Calculations (Required)
Refer to Appendices J of the BMP
Design Manual for trash capture BMP
design guidelines
Included
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BW=49.7
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TC=51.73FL=51.67
TC=51.20FL=51.13
TC=50.76FL=50.68
TC=50.87FL=50.41
TC=50.27FL=49.78
TC=49.37FL=49.29
TC=49.10FL=49.01
TC=49.26FL=48.78
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LOT 10
MAP 1803
LOT 1MAP 1747
APN: 204-240-09-00 LOT 2MAP 1747
APN: 204-240-10-00 LOT 3MAP 1747
APN: 204-240-11-00
APN: 204-240-07-00
POR. LOT 10BLOCK QMAP 1803
APN: 204-240-12-00
LOT 4
MAP 1747
APN: 204-240-12-00
DMA 1 CONNECTION
TO OFFSITE
DRAINAGE
54.0 FL
53.1 FL
53.5 FG
54.5 FG54.0 FG53.5 FG
PROPOSED DI-MINIMISAREA: 250 SF STORMTEK PIPE SCREEN
CONNECTOR BMP
Q1 = 0.075 CFS
DMA 1
AREA = 5,905 SF
(0.212 AC)
Cn = 0.75
LEGEND
PROPERTY BOUNDARY
CENTERLINE OF ROAD
ADJACENT PROPERTY LINE
PUBLIC RIGHT-OF-WAY
BASIN / DMA BOUNDARY
FLOW LINE
PROPOSED IMPERVIOUS AREA
PROPOSED DI MINIMIS AREA
DMA - TRASH CAPTURE EXHIBIT
245 ACACIA AVE
CARLSBAD, CA 92008
10 20 30
GRAPHIC SCALE 1" = 10'
010
PLAN VIEW - DMA EXHIBIT
SCALE: 1" = 10' HORIZONTAL
DMA ID NUMBER DMA AREA (ACRES)
1 0.212
DMA TYPE
TRASH CAPTURE
J:\ACTIVE JOBS\3580 RINCON ACACIA\CIVIL\REPORTS\SWQMP\TRASH CAPTURE\0_APPENDIX\3580-CV-DMA.DWG PLSA 3580
1.C) Trash Capture BMP Design Calculations
Q = CIA *Rational Method Equation
I = 0.471 in/hr *BMP design manual rainfall intensity for 1-hr 1-yr storm
Total Area = 9,250 sf ➔ 0.212 Acres
Impervious Area = 7,115 sf ➔ 0.163 Acres
Pervious Area = 2,135 sf ➔ 0.049 Acres
Cn, Weighted Runoff Coefficient
- 0.25, Cn value for natural ground, Type B soils
* Per San Diego Hydrology Design Manual (SDHDM) Section 3.1.2
- 0.9, C value for developed / impervious surface
* Per SDHDM Section 3.1.2
Cn = 0.9 x 7,115 sf + 0.25 x 2,135 sf = 0.75
9,250 sf
DMA 1
Total Area = 0.058 Acres
Q1 = 0.75 * 0.471 in/hr * 0.212Acres
= 0.075 cfs
1. Cover Letter
a. Product Name and General Description of Device
The Stormtek ST3 & ST3G is a Connector Pipe Screen filter used specifically for catch basin or
curb inletsumps and installed in front of the outflow pipe at the bottom of the sump.The Stormtek
device provides physical screening of pollutants such as solids, trash and debris. It is best used
in central drains from paved surface areas in both arterial and non arterial along with
commercial and residential areas.
b. Applicant's Contact Information and Location
Chief Executive Officer: Keith Morgan
Storm Water Inspection & Maintenance Services, Inc
Chief Financial Officer and Office Manager
keith@swimsclean.com
(925) 783-9092
Vice President: Todd Hudson
Storm Water Inspection & Maintenance Services, Inc
Vice President of Operations
todd@swimsclean.com
(925) 570-4575
Authorized Representative: Ric Campos
Storm Water Inspection & Maintenance Services, Inc
President and Owner
ric@swimsclean.com
(510) 773-5461
Mailing Address: Storm Water Inspection & Maintenance Services, Inc
c/o Ric Campos
PO Box 1627
Discovery Bay, CA 94505
c. Manufacturer's Website for Device
https://swimsclean.com/stormtek/
i
d. Manufacturing Location for Device
Manufacturer Name: Storm Water Inspection & Maintenance Services, Inc
Manufacturer Address: 698 Enterprise Court
Livermore, CA 94550
Manufacturer Phone: (925) 516-8966
Manufacturer Representative: Ethan Purkey
(925) 698-5417
e. Summary of Field/Lab Testing Results
All solids, trash and debris for any storm event is captured with the Stormtek device with it's full trash
capture 5mm mesh screen. No lab testing has been recorded for the Stormtek ST3 or ST3G device.
f. Summary of Device Limitations, and Operational, Sizing and Maintenance
Considerations
Each Stormtek unit is specifically designed for a specific catch basin or outflow pipe. We wake all
elements into consideration for the design and build, which is for the benefit of both catching
contaminants and utilizing the space for best possible flow rates. Our durable frame is mounted to the
outflow pipe wall and is equipped with pins that will hold the device in place and can be easily removed
for maintenance and vector control. The STORMTEK device is made with a high grade steel (S-304) and
a 5mm mesh screen. Our welded mesh screen and framing throughout makes our device able to
withstand the toughest of conditions and with a track record of doing just that. Please refer to our website
www.swimsclean.com/stormtek to see a list of cities that have trusted the STORMTEK device.
Maintenance on the Stormtek unit is imperative for the function and durability of the device. The
schedule of maintenance should be Two (2) Times Per Year (once in the dry season and once in the wet
season) unless additional services are required in high traffic areas. The two cleanings are required to
ensure correct trash capture and bypass does not occur.
g. Description, or List of Locations, where Device has been installed
The Stormtek device has been installed throughout California and nationally to meet various trash
capture projects and applications. See list below with a few examples of installation areas:
Example of Installations
Project Location Contact
City of San Jose
City of Milpitas
Apple Spaceship Campus
Various streets in city
Great Mall Pkwy, Milpitas
Blvd
10955 N Tantau Ave,
Cupertino, CA 95014
Theresa Porter
Julie Waldron
Preston Pipelines
ii
h. Certification
I certify under penalty of law that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my injury of the person(s) that manage the system or
those persons directly responsible for gathering the information, to the best of my knowledge and belief,
the information submitted is, true, accurate, and complete. I am aware that there are significant penalties
for submitting false information, including the possibility of fine and imprisonment for knowing violations.
7/14/2021
Ric Campos Date
Storm Water Inspection & Maintenance, Inc
President/Owner
ric@swimsclean.com
(510) 773-5461
iii
Table of Contents
1. Cover Letter
a. Product Name and General Description of Device...........................................i
b. Applicant's Contact Information and Location...................................................i
c. Manufacturer's Website for Device....................................................................i
d. Manufacturing Location for Device...................................................................ii
e. Summary of Field/Lab Testing Results.............................................................ii
f. Summary of Device Limitations, and Operational, Sizing, and Maintenance
Considerations...................................................................................................ii
g. Description, or List of Locations, where Device has been installed..................ii
h. Certification......................................................................................................iii
2. Table of Contents............................................................................................1-2
3. Physical Description..........................................................................................3
a. Trash Capture: Description of Device..............................................................3
b. Peak Flows/Trash Volumes.............................................................................4
c. Hydraulic Capacity...........................................................................................4
1) Hydraulic Capacity Table.............................................................................4
2) Alternative Configuration Hydraulic Capacity Table.....................................4
3) Hydraulic Capacity Calculations or Field Test Results.................................4
d. Comparison Table............................................................................................4
e. Design Drawings..............................................................................................5
f. Alternative Configurations.................................................................................5
g. Internal Bypass................................................................................................5
h. Previously Trapped Trash................................................................................5
i. Calibration Feature............................................................................................5
j. Photos...............................................................................................................6
k. Material Type...................................................................................................7
l. Design Life........................................................................................................7
1
4. Installation Guidance........................................................................................8
a. Installation Procedures....................................................................................8
b. Device Installation Limitations/Non-standard Installation Procedures.............8
c. Diagnosing and Correcting Installation Errors.................................................8
5. Operation and Maintenance Information.........................................................9
a. Device Inspection Procedures and Frequency Considerations........................9
b. Device Maintenance Frequency Related to Hydraulic Capacity.......................9
c. Maintenance Procedures..................................................................................9
d. Maintenance Equipment and Materials..........................................................10
e. Effects of Deferred Maintenance....................................................................10
f. Repair Procedures...........................................................................................10
6. Vector Control Accessibility...........................................................................11
a. Date of Submittal to Mosquito Vector Control Association.............................11
b. Description of Access for Vector Control Personnel.......................................11
c. Letter of Verification from Mosquito Vector Control Association.....................11
7. Reliability Information.....................................................................................12
a. Estimated Design Life.....................................................................................12
b. Warranty Information......................................................................................12
c. Customer Support Information........................................................................12
8. Field/Lab Testing Information & Analysis.....................................................13
a. Available Field/Lab Testing Information - Devices with 5mm Screen.............13
b. Available Field/Lab Testing Information - Devices without 5mm Screen........13
APPENDIX A.........................................................................................................14
Stormtek Design Drawing...................................................................................15
APPENDIX B.........................................................................................................16
MVCAC Approval Document..............................................................................17
2
Section 1. Physical Description
DESCRIPTION OF DESIGN ELEMENTS
• The mounting frame can be made of coated or stainless steel. Frame
members are made from 2” flat bars with a minimum thickness of 3/16
inch.
• The insert screen is made of heavy-gage sheet metal with 5 millimeter
(mm) openings. Total openings constitute 50% of the screen surface. Top
4 inches of the screen is grated with bars spaced at 2 inches on center.
• Insert top cover is made of heavy-gage sheet metal screen with 5 mm
openings and 1” support frames.
• Structural support members for the screen and top cover are made of
coated or stainless steel. Members are made from 1” flat bars with a
minimum thickness of 1/8 inch.
• Mounting frame members are welded
• Structural support frame members are welded
• Insert screens are welded onto structural support frames.
• Mounting frames are bolted onto the catch basin wall at the outlet
opening. Mounting frames are to be anchored at all four corners with HILTI
expansion anchors or equal.
• Inserts are installed vertically onto the mounting frame directly in front of
the outlet opening.
•The insert is completely removable by lifting it off the mounting frame
a. Trash Capture: Description of Device
Internal Bypass: The bypass can range anywhere between 6-8 inches of an
opening near the top of the device for heavy flow rates. Once the flow
reaches the bypass it can flow freely into bypass.
3. Physical Desription
3
b. Peak Flows / Trash Volumes
The tables in Section 3 Hydraulic Capacities list Peak Flow and Trash
(Storage) Volume capacities for 4 common sizes of the Stormtek ST3 &
ST3G devices.
c. Hydraulic Capacity
1) Hydraulic Capacity Table
2) Alternative Configuration Hydraulic Capacity Table
Stormtek does not have alternative configurations
3) Hydraulic Capacity Calculations or Field Test Results
See Table Above
d. Comparison Table
The tables in table above lists storage and hydraulic capacities for 4 common sizes of
the Stormtek device
Stormtek ST3 & ST3G Connector Pipe Screen
Hydraulic Capacity
Filtered Flow
(CFS)Stormtek
device size
24 x 24 x 12r
24 x 36 12r
Peak/
Bypass Flow
(CFS)
Storage
Capacity
(CF)
24 x 18 x 12r
24 x 30 x 12r
5.86 3.81
Empty 25% Full 50% Full 75% Full
2.07 .73 10.29 .95
9.02 5.86 3.19 1.13 10.59 1.27
12.61 8.19 4.46 1.58 10.59 1.58
16.57 10.76 5.86 2.07 10.59 1.90
4
e. Design Drawings
Design drawings for Stormtek are included in Appendix A
f. Alernative Configurations
Stormtek does not have alternative configurations
g. Internal Bypass
The bypass on the Stormtek device is designed for the occasion when full
capacity of the sump surrounding the device has occurred. The bypass is
located on the upper area of the device right below the deflector plate.
This bypass is equal to the flow rate based on the size of the outflow pipe.
Note: Bypass should not occur when the device is properly maintained
and on a regular maintenance schedule.
h. Previously Trapped Trash
The Stormtek device is designed with a semi circle shape to provide more
of a storage area for trapped trash and helps roll trash to sides. This helps
give more room for storing previously trapped trash. This trash only
discharges downstream when there is no regular maintenance and the
storage height has reached the bypass area.
i. Calibration Feature
Stormtek does not have a calibration feature
5
j. Photos
Figure 1. Installed Stormtek device Figure 2. Installed Stormtek device
Figure 3. Installed Stormtek device Figure 4. Installed Stormtek device
Figure 6. Installed Stormtek device
in shallow sump
6
k. Material Type
The Stormtek device is made of all stainless steel 304 metal. The
mounting frame are made of 2" flat bars with a minimum thckness of 3/16
inch. The insert screen is made of heavy gage sheet metal with less than
5mm openings. The top openings of 4" of the screen is grated with bars
spaced 2" on center. The top cover is made of the same material as the
insert screen. The structural support members for the screen is made of
stainless steel and are made from 1" flat bars with a minimum thickness of
1/8".
l. Design Life
The design life for the Stormtek device is 15 years. This is dependent on
being correctly installed along with the recommended maintenance of at
least (2x) per year or more depending on surrounding conditions.
7
6
4. Installation Guidance
a. Installation Procedures
b. Device Installation Limitations/ Non-standard Installation Procedures
Although the STORMTEK device is manufactured to the specification of the catch basin/vault,
occasionally the CB sump is too shallow to be practical. In this case we recommend relocating the
device to an alternate CB. In the event of a non-standard installation procedure the installer can
contact STORMTEK customer service at (925) 516-8966. Ask for Ethan or Todd
c. Diagnosing and Correcting Installation Errors
STORMTEK has been designed for simple installation and maintenance. After installation, visually
inspect frame for contact with CB/vault wall. Install and remove STORMTEK screen from locator pins
on frame for easy removal for maintenance. If there a problem exists, please review all steps in the
above installation procedure. In the event of a problematic installation procedure the installer can
contact STORMTEK customer service at (925) 516-8966. Ask for Ethan or Todd
8
a. Installation Procedures
STORMTEK is custom manufactured to fit each specific installation. Proper
measurement is required prior to ordering the device. It is recommended that the
catch basins are cleaned and inspected for any damage or irregularities prior to
installing the STORMTEK device. If the installation surfaces on the catch basin/vault
walls are irregular or damaged, some modifications may be needed to create a smooth
mounting surface.
1. Set up all safety requirements prior to starting installation.
2. Remove the manhole cover or grate.
3. Clean CB/vault surfaces.
4. Center STORMTEK frame over effluent pipe.
5. Attach to CB/vault wall with expansion anchors.
6. The STORMTEK screen is placed on the frame locator pins and slide down to
secure in place.
7. Reinstall manhole cover or grate.
b. Device Installation Limitations / Non-standard Installtion Procedures
Although the Stormtek device is manufactured to the specification of the catch
basin/vault, occasionally the CB sump is too shallow to be practical. In this case we
recommend relocation the
device to an alternate CB. In the event of non-standard installation procedure the
installer can contact Stormtek customer service at (925) 516-8966. Ask for Ethan or
Todd.
c. Diagnosing and Correcting Installation Errors
Stormtek has been designed for simple installation and maintenance. After installation,
visually inspect frame for contact with CB/vault wall. Install and remove Stormtek
screen from locater pins on frame for easy removal for maintenance. If there a problem
exists, please review all steps in the above installation procedure. In the event of a
problematic installation procedure the installer can contact Stormtek customer service
at (925) 516-8966. Ask for Ethan or Todd.
4. Installation Guidance
7
5. Operation and Maintenance Information
a. Inspection Procedures and Frequency Considerations
Inspection and Maintenance intervals will depend on many factors such as location, size/quantity, storm
water runoff volume, surrounding vegetation and debris potential. The following is the minimum
inspection recommendation, but inspection and maintenance may need interval increases, as necessary.
STORMTEK recommends two inspection per year minimum. The first inspection should take place at the
start of the rainy season and the second inspection taking place near the end of the rainy season. **
Inspections in the first year of installation should be more frequent, 3-4 times per year, to establish a
base line for debris loading. ** If the region of installation has no definitive rainy season, inspections
should be spaced evenly throughout the year.
STORMTEK Connector Pipe Screens can be inspected without entry into the catch basin.
Follow all safety precautions, traffic control and PPE requirement for the specific work area.
SAFETY FIRST
1. Remove the manhole cover or grate.
2. Inspect the interior catch basin opening, walls and floor.
3. Inspect the STORMTEK connector pipe screen for damage or looseness.
4. Inspect vector control deflector plate for proper operation (if applicable)
5. Measure debris load with sludge judge, tape measure or equal.
6. Note findings and take photos as necessary.
7. Note if any vector problems.
8. Replace the manhole cover or grate.
b. Device Maintenance Frequency Related to Hydraulic Capacity
Periodic maintenance is required to ensure proper function of the STORMTEK Connector Pipe Screen and
to ensure continued protection of the receiving water bodies. A maintenance program should be based
on the data from the previous inspection history as well the size and location of the STORMTEK device. A
customized maintenance program provides the most benefit to operation while minimizing maintenance
costs. Maintenance should be performed when the STORMTEK device reaches 75% height /volume
capacity.
c. Maintenance Procedures
Follow all safety precautions, traffic control and PPE requirement for the specific work area.
SAFETY FIRST. STORMTEK recommends the following maintenance procedures:
5. Operation and Maintenance Information
a. Device Inspection Procedures and Frequency Considerations
b. Device Maintenance Frequency Related to Hydraulic Capacity
c. Maintenance Procedures
9
8
1. The manhole cover or grate shall be removed and set to one side.
2. The catch basin shall be visually inspected for defects and possible illegal dumping. If illegal
dumping has occurred, the proper authorities and property owner representative shall be
notified as soon as practicable.
3. Using an industrial vacuum, the collected debris/materials shall be removed from the catch
basin/vault.
4. When all collected debris/materials have been vacuumed, the STORMTEK device can be
easily removed by lifting the screen off of the locator pins. The STORMTEK screen can now
be inspected and cleaned.
5. Reinstall the screen on to the locator pins and secure in place.
6. The manhole cover or grate shall be reinstalled.
7. All removed debris shall be disposed of in accordance with local, state, and federal agency
requirements.
d. Maintenance Equipment and Materials
The following equipment should be used to conduct maintenance on the STORMTEK connector pipe
screen.
• Personal Protective Equipment (PPE), Safety equipment and traffic control as needed.
• Lighting as needed
• Industrial vacuum
• Pressure washer (recmended)
• Tools for safe removal/reinstallation of manhole or grate.
e. Effects of Deferred Maintenance
Deferred maintenance may allow the STORMTEK device to achieve capacity and go into bypass.
Once the system is in bypass, no additional trash or debris will be collected. If bypass occurs, the
debris in the bypass flows will pass through the system and discharge in receiving waters.
f. Repair Procedures
If inspection of the STORMTEK device reveals damage and is in need of repair, the damage should be
documented, photographed, and then submitted to STORMTEK (SWIMS) for assessment. STORMTEK
personnel will evaluate the damage and recommend or initiate any warranty repair. Responsibility for
the repair will depend on the cause of damage.
d. Maintenance Equipment and Materials
e. Effects of Deferred Maintenance
f. Repair Procedures
10
Section 4. Mosquito and Vector Control
The StormTek ST3G device has a hinged deflector plate that can lift-up for mosquito or vector
inspection, access, or treatment. This deflector plate can be lifted through the storm grate with
a simple hook tool or equal. The deflector plate is light weight and easy to lift and return into
position. The lid and hinges are made from stainless steel and therefore will not rust.
Application for the Mosquito and Vector Control Association of California approval of the
Stormtek device was submitted on February 3rd of 2021.
6. Vector Control Accesibility
a. Date of Submittal to Mosquito Vector Control Association
The Application for the Mosquito and Vector Control Association of California approval of the
Stormtek Device was submitted on August 4th of 2021.
b. Description of Access for Vector Control Personnel
a. Date of Submittal to Mosquito Vector Control Assocation
c. Letter of Verification from Mosquito Vector Control Association
Refer to Appendix B for letter of verification from MVCAC
11
10
7. Reliability Information
a. Estimated Design Life
The estimated design life for the STORMTEK Connector Pipe Screen is 15 years. Design life estimate is
dependent on the proper design, installation and maintenance of the system and assume no
extraordinary circumstances.
b. Warranty Information
STORMTEK warranties the ST3 and ST3G models to be free from manufacturing defects for a period of
one (5) year from the date of purchase. Abusive treatment, lack of routine maintenance, neglect or
improper use of the will not be covered by this warranty.
c. Customer Support Information
STORMTEK (and SWIMS) offers full customer service and support for all STORMTEK products.
Customer Support contact information:
STORMTEK and Storm Water Inspection and Maintenance Services, Inc.
PO Box 1627
Discovery Bay, CA 94505
(925) 516-8966
Web site: www.swimsclean.com
E-mail: info@swimsclean.com
7. Reliability Information
a. Estimated Design Life
b. Warranty Information
c. Customer Support Information
12
11
8. Field/Lab Testing Information and Analysis
a. Available Field/Lab Testing Information – Devices with 5mm Screen
STORMTEK includes a screen with 4.9mm apertures through which all treatment flow must pass to
travel downstream; therefore, testing is not required to demonstrate trash capture performance
because particles 5mm in diameter and larger cannot physically pass through the screen.
b. Available Field/Lab Testing Information – Devices without 5mm Screen
STORMTEK without the trash capture (4.9mm aperture) screen do not have testing or field data
available and will not be used for trash capture applications.
8. Field/Lab Testing Information and Analysis
a. Available Field/Lab Testing Information - Devices with 5mm Screen
b. Available Field/Lab Testing Information - Devices without 5mm Screen
13
APPENDIX A APPENDIX A
14
Catch Basin Sump
StormTek™ ST3/ST3G
Deflector Plate only
with ST3G Model
Stainless Steel Frame
(2" flat bars, 3/16" thick)
mounted to wall
Device fastens on pins
Outflow Pipe
Heavy-Gage Sheet Metal Screen
S-304 Stainless Steel
5mm openings
Structural Support Bars
(Bypass)
Stainless Steel
1" flat bars
1/8" thickness
- Bypass has
equivalent or greater
flow rate as outflow
pipe
10/25/2018
P.O. Box 1627
Discovery Bay, CA 94505
StormTek
a) StormTek™ ST3/ST3G
b) StormTek™ is installed in front of the
outflow pipe is supported by the frame
mounted on the existing catch basin wall
c) This device is designed to capture
trash, sediment and debris from entering
the storm water system.
StormTek™ ST3/ST3G Installation: Connector Pipe Screen Filter
P.O. Box 1627
Discovery Bay, CA 94505
NorCal: 925.516.8966
SoCal: 949.542.7234
www.swimsclean.com
General Notes:
Revision/Issue
Company Name and Address:
Product Name and Address:
Scale:
Scale
StormTek™ Pipe Screen
Model ST3/ST3G
Project:
No.
1
- Device is retro-fitted
to catch basin
specifications
- Deflector plate is the
only difference
between ST3 & ST3G
StormTek™
No Scale
Sheet:1 of 1
Plan View Section A
15
XXXX
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24"TC
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12"TD
SHED
GARAGE
GARAGE
1FT CONCRETE BLOCK WALL
1.5 FT CONCRETE BLOCK RETAINING WALL
6FT WOOD FENCE ON WALL 6FT WOOD FENCE ON WALL 6FT WOOD FENCE
1FT CONCRETE BLOCK WALL
6F
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6F
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CONCRETE
TW=53.8
BW=53.5
BW=53.4TW=53.5 TW=53.7BW=52.2
TW=54.1BW=53.7BW=54.1
TW=53.7BW=51.8
TW=54.1BW=53.4
BW=54.1 TW=54.1BW=53.5
BW=54.2
TW=53.6BW=51.8
BW=53.6
BW=52.9TW=53.7
BW=51.0TW=52.4
BW=50.9TW=51.3
BW=49.7
BW=50.9TW=51.9
BW=50.3
BW=49.9TW=51.3
BW=48.8
BRICK
1.5 FT CONCRETE BLOCK RETAINING
WALL
3FT CHAINLINK FENCE
56
55
55
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54
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5454
54
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535353
5
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CONCRETE
TC=55.38FL=54.94
TC=54.29FL=53.83
TC=53.18FL=52.72
TC=52.40FL=51.92
TC=51.73FL=51.67
TC=51.20FL=51.13
TC=50.76FL=50.68
TC=50.87FL=50.41
TC=50.27FL=49.78
TC=49.37FL=49.29
TC=49.10FL=49.01
TC=49.26FL=48.78
TC=49.05FL=48.58
51.8
51.7
51.6
51.2
51.6
51.5
51.4
51.2
51.7
51.8
52.6
51.6
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51.9 51.5
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51.7 51.752.2
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52.6
53.4
52.6
52.3
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50.6 50.6 50.4 50.8 50.6 50.8
54.2
54.253.854.254.5
Z:49.4 Z:49.4 49.4 49.6 50.2
IE OUT=37.0
IE IN=37.1
RIM=49.3
SHED
SHED
1 STORY HOUSE
1 STORY HOUSE
3FT WOOD FENCE
CANOPY
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30' 30'
60'
UNIT 2
TYPE 'B'
FF = 54.7
PAD = 54.0
N 34°03'15" W 150.00'
AC
A
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AV
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LOT 10
MAP 1803
LOT 1
MAP 1747
APN: 204-240-09-00 LOT 2
MAP 1747
APN: 204-240-10-00 LOT 3
MAP 1747
APN: 204-240-11-00
APN: 204-240-07-00
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& ASSOCIATES
Phone 858.259.8212 | www.plsaengineering.com
San Diego | Solana Beach | Orange County
ACACIA BEACH HOMES
245 ACACIA AVENUE
MS 2021-0004 537-8A
GR-2022-0022
10 20 30
GRAPHIC SCALE 1" = 10'
010
PLAN VIEW - TRASH CAPTURE BMP
SCALE: 1" = 10' HORIZONTAL
SINGLE SHEET BMP
PLSA 3580J:\ACTIVE JOBS\3580 RINCON ACACIA\CIVIL\DRAWING\GRADING PLANS\3580-CV-GRAD-07-BMP.DWG
1. THESE BMPS ARE MANDATORY TO BE INSTALLED PER MANUFACTURER'S
RECOMMENDATIONS AND/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.
4. NO OCCUPANCY WILL BE GRANTED UNTIL THE CITY INSPECTION STAFF
HAS INSPECTED THIS PROJECT FOR APPROPRIATE BMP CONSTRUCTION
AND INSTALLATION.
BMP NOTES:
PARTY RESPONSIBLE FOR MAINTENANCE:
NAME
ADDRESS
PHONE NO.
CONTACT
PLAN PREPARED BY:
NAME
ADDRESS
PHONE NO.
CERTIFICATION
COMPANY
5. REFER TO MAINTENANCE AGREEMENT DOCUMENT.
6. SEE PROJECT SWQMP FOR ADDITIONAL INFORMATION.
SIGNATURE
BMP CONSTRUCTION AND INSPECTION NOTES:
THE EOW WILL VERIFY THAT PERMANENT BMPS ARE CONSTRUCTED AND
OPERATING IN COMPLIANCE WITH THE APPLICABLE REQUIREMENTS.
PRIOR TO OCCUPANCY THE EOW MUST PROVIDE:
1.PHOTOGRAPHS OF THE INSTALLATION OF PERMANENT BMPSPRIOR TO CONSTRUCTION, DURING CONSTRUCTION, AND AT FINALINSTALLATION.
2.A WET STAMPED LETTER VERIFYING THAT PERMANENT BMPS ARE
CONSTRUCTED AND OPERATING PER THE REQUIREMENTS OF THE
APPROVED PLANS.
3.PHOTOGRAPHS TO VERIFY THAT PERMANENT WATER QUALITY
TREATMENT SIGNAGE HAS BEEN INSTALLED.
PRIOR TO RELEASE OF SECURITIES, THE DEVELOPER IS RESPONSIBLEFOR ENSURING THE PERMANENT BMPS HAVE NOT BEEN REMOVED ORMODIFIED BY THE NEW HOMEOWNER OR HOA WITHOUT THE APPROVAL
OF THE CITY ENGINEER.
BRYAN KNAPP
PLSA ENGINEERING
1911 SAN DIEGO AVENUNE
SAN DIEGO, CA 92110
(858) 259-8212
LEGEND
PROPERTY BOUNDARY
CENTERLINE OF ROAD
ADJACENT PROPERTY LINE
PUBLIC RIGHT-OF-WAY
RREG INVESMENT SERIES, LLC
SERIES I041, A DELAWARE
LIMITED LIABILITY COMPANY
(949)-637-3254
SUITE 200, CARLSBAD,
5315 AVENDIA ENCINAS,
CA 92008
KEVIN DUNN
ROOF DRAIN TOLANDSCAPING
BMP TYPEBMP ID #SYMBOL CASQA NO.DRAWING NO.SHEET NO.(S)MAINTENANCEFREQUENCY
TRASH CAPTURE BMP TABLE
SD-11
TC-50
INSPECTION FREQUENCYQUANTITY
TRASH CAPTURE BMPs
LOW IMPACT DESIGN (L.I.D.)
4 EA.537-8A ANNUALLY AS NEEDED
1 EA.537-8A 4 QUARTERLY AS NEEDED
424-
SCREENPIPE CONNECTOR1
86542
5 STENCIL SD-13 1 EA.537-8A 4 --STENCIL
TYPICAL DETAIL - STROMTEK ST3 / ST3G
PIPE SCREEN CONNECTOR (24 X 18 X 12r)
SCALE: NOT TO SCALE
TYPICAL DETAIL - NO DUMPING STENCILING
SCALE: NOT TO SCALE
STORMTEK ST3/ST3G
(24 X 18 X 12r)
Catch Basin Sump
StormTek™ ST3/ST3G
Outflow Pipe