HomeMy WebLinkAboutAMEND 2024-0008; INNS OF AMERICA; TRASH CAPTURE STORMWATER QUALITY MANAGEMENT PLAN - SWQMP; 2025-05-081 Cityof
lsbad
TRASH CAPTURE STORM WATER
QUALITY MANAGEMENT PLAN
(SWQMP) TEMPLATE
E-35B
(FOR STANDARD PROJECTS ONLY)
CITY OF CARLSBAD
TRASH CAPTURE
Development Services
Land Development Engineering
1635 Faraday Avenue
442-339-2750
www.carlsbadca.gov
STORM WATER QUALITY MANAGEMENT PLAN (SWQMP)
E-35A
5010 AVENIDA ENCINAS
AMEND 2024-0008
CUP 2024-0009
PUD 2024-0009 (DEV99017)
ENGINEER OF WORK:
JOHN VAN RYN
C80667
PREPARED FOR:
ALLIANCE DEVELOPMENT SERVICES
17828 VILLAMOURA DR.,
POWAY, CA 92064
760-522-5767
PREPARED BY:
VAN RYN ENGINEERING
16766 BERNARDO CENTER DR. STE. 115,
SAN DIEGO, CA 92128
858-521-81 00
DATE:
05/08/2025
CITY OF CARLSBAD
MAY 2 2 2025
PLANNING DIVISION
REV 12/2024
1{_ City of
Carlsbad
TRASH CAPTURE STORM WATER
QUALITY MANAGEMENT PLAN
(SWQMP) TEMPLATE
E-358
Development Services
Land Development Engineering
1635 Faraday Avenue
442-339-2750
www.carlsbadca.gov
E-35A
(FOR STANDARD PROJECTS ONLY)
CITY OF CARLSBAD
TRASH CAPTURE
STORM WATER QUALITY MANAGEMENT PLAN (SWQMP)
5010 AVENIDA ENCINAS
AMEND 2024-0008
CUP 2024-0009
PUD 2024-0009 (DEV99017)
ENGINEER OF WORK:
[INSERT CIVIL ENGINEER'S NAME AND PE NUMBER HERE, PROVIDE WET
SIGNATURE AND STAMP ABOVE LINE]
JOHN VAN RYN
C80667
PREPARED FOR:
ALLIANCE DEVELOPMENT SERVICES
17828 VILLAMOURA DR.,
POWAY, CA 92064
760-522-5767
PREPARED BY:
VAN RYN ENGINEERING
16766 BERNARDO CENTER DR. STE . 115,
SAN DIEGO, CA 92128
858-521-8100
DATE:
05/08/2025
REV 12/2024
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 1 a: OMA Exhibit
Attachment 1 b: 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
Project Name: [Insert]
Project ID: [Insert]
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.
C80667, EXP: 03-31-25
Engineer of Work's Signature, PE Number & Expiration Date
John Van Ryn
Print Name
Van Ryn Engineering
Company
12/10/2024
Date
PROJECT VICINITY MAP
VICINITY MAP
N. T.S.
[Insert City's Storm Water Standard Questionnaire (Form E-34) here]
{'cityof
Carlsbad
STORM WATER STANDARDS
QUESTIONNAIRE
Development Services
Land Development Engineering
1635 Faraday Avenue
442-339-2750
www.carlsbadca.gov
E-34
j 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, "PRIORITY DEVELOPMENT PROJECT (PDP)
requirements or not considered a development project. This questionnaire will also determine if the project is subject to
TRASH CAPTURE 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
concurrentlv.
PROJECT INFORMATION
PROJECT NAME: 5010 AVENIDA ENCINAS APN:
ADDRESS: 5010 AVENI DA ENCINAS, CARLSBAD, CA 92008 210-090-24 & 210-090-52
The project is (check one): [81 New Development D Redevelopment
The total proposed disturbed area is: 7,160 ft2(0.16 ) acres
The total proposed newly created and/or replaced impervious area is: 4793 ft2 (0.11 ) 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
YES NO Date: Project ID:
City Concurrence:
□ □ By:
E-34 Page 1 of 4 REV 04/23
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 □ I&] 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.
STEP2
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 □ I&] 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 quidance?
2. Retrofitting or redeveloping existing paved alleys, streets, or roads that are designed and constructed in □ I&] 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? □ I&]
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 2 of 4 REV 04/23
~TEP.~ . u;/. ..( I
'· :, .. TO BE COMPLa'ED FOR ALL.NEW ~Jt f.t~DJ.NEL(l.PMl;~T PROJ~dtS .. ..: ' ;
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 qreater.
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, motorcvcles, 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 5, complete the trash capture question.
If you answered "no" to all of the above questions, your project is a 'STANDARD PROJECT'. Go to step 5, complete the
trash capture question.
.. .. • Environmentally Sens1t1ve Areas include but are not limited to all Clean Water Act Section 303(d) 1mpa1red 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.
E-34 Page 3 of 4 REV 04/23
STEP4
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. □ □
Total proposed newly created or replaced impervious area (B) = sq. ft.
Percent impervious area created or replaced (B/A)*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, complete the trash capture question.
If you answered "no," the structural BM P's required for PDP apply to the entire development. Go to step 5, complete the
trash capture question.
STEP5
TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS
Complete the question below regarding your Project (SDRWQCB Order No. 2017-0077):
YES NO
Is the Project within any of the following Priority Land Use (PLU) categories?
R-23 (15-23 du/ac), R-30 (23-30 du/ac), Pl (Planned Industrial), CF (Community Facilities), GC (General 18] □ Commercial), L (Local Shopping Center), R (Regional Commercial), V-8 (Village-Barrio), VC (Visitor
Commercial), 0 (Office), VC/OS (Visitor Commercial/Open Space), Pl/O (Planned Industrial/Office), or
Public Transportation Station
If you answered "yes", the 'PROJECT' is subject to TRASH CAPTURE REQUIREMENTS. Go to step 6, check the first
box stating, "My project is subject to TRASH CAPTURE REQUIREMENTS ... " and the second or third box as
determined in step 3.
If you answered "no", Go to step 6, check the second or third box as determined in step 3.
STEP6
CHECK THE APPROPRIATE BOX(ES) AND COMPLETE APPLICANT INFORMATION
lg] My project is subject to TRASH CAPTURE REQUIREMENTS and must comply with TRASH CAPTURE
REQUIREMENTS of the BMP Manual. I understand I must prepare a Storm Water Quality Management Plan (SWQMP).
lg] 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. If my
project is subject to TRASH CAPTURE REQUIREMENTS, I will submit a TRASH CAPTURE Storm Water Quality
Management Plan (TCSWQMP) per E-35A.
D 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) per E-35 template for submittal at time of application.
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.
D My project is NOT a 'development project' and is not subject to the requirements of the BMP Manual.
Applicant Information and Signature Box
Applicant Name: John Van Ryn Applicant Title: PE
Applicant Signature: r/tf?-Date: 12/10/2024
E-34 Page 4 of 4 REV 04/23
SITE INFORMATION CHECKLIST
Project Summary Information
Project Name 501 0 Avenida Encinas
Project ID
Project Address 5010 Avenida Encinas
Carlsbad, CA 92008
Assessor's Parcel Number(s) (APN(s)) 210-090-52
Project Watershed (Hydrologic Unit) Carlsbad 904
Parcel Area 2.703 ( 117,738 Square Feet) Acres
Description of Existina 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
El Pl (Planned Industrial)
Commercial
□CF (Community Facilities)
□ GC (General Commercial)
□ L (Local Shopping Center)
□ R (Regional Commercial)
□V-B (Village-Barrio)
□ VC (Visitor Commercial)
DO (Office)
□ VC/OS (Visitor Commercial/Open Space)
Mixed Urban
□ Pl/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]:
Most of the site drainage is conveyed through the parking lot to one of the existing
drains. One drain is located in the north-east corner of the parking lot while the other is
located in the south-west corner. Most of the existing conveyance is urban, using the
parking lot drains. The western side of the site has landscape area sloping down towards
Avenida Encinas. Offsite runoff is not conveyed through the site.
Description of Proposed Site Development and Drainage Patterns
Project Description / Proposed Land Use and/or Activities:
This project proposes the development of the northern portion of the site that runs along Cannon
Rd. This area exists landscape area, and will be developed into two pickle ball courts and small
storage room . Also, a roof will be added to the existing trash enclosure located on the
south-east site of the site. The existing hotel and associated hard scape will not be disturbed.
Does the project include grading and changes to site topography?
0Yes
□No
Description/ Additiona l Information:
This project proposes slight grading to accommodate the pickle ball courts and storage
room. A detention basin located in the north-west corner of the site will also be graded.
Does the project include changes to site drainage (e.g., installation of new storm water
conveyance systems)?
0Yes
□No
Description / Additional Information:
The proposed development convey the storm water from the new hard scape to the
proposed detention basin located in the north-west corner of the site. The proposed
improvements will tie in to existing storm drain structures.
Optional Additional Information or Continuation of Previous Sections As Needed
This space provided for add iti onal information or continuation of information from previous
sections as needed.
[Insert City's Standard Project Requirement Checklist Form E-36 (here)]
{'city of
Carlsbad
Project Name: 5010 AVENIDA ENCINAS
Project ID:
DWG No. or Building Permit No.:
STANDARD PROJECT
REQUIREMENT
CHECKLIST
E-36
Project Information
Development Services
Land Development Engineering
1635 Faraday Avenue
442-339-2750
www.carlsbadca.gov
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 1. Select the BMPs to be implemented for each identified feature. Explain
the site. why any BMP not selected is infeasible in the area below.
50-G 50-H
Conserve natural Provide buffers around waterbodies
features
□ Natural waterbodies u u
□ Natural storaqe reservoirs & drainaqe corridors u --
[!] Natural areas, soils, & veqetation (incl. trees) l!..I --
B. BMPs for Common Impervious Outdoor Site Features (see Fact Sheet BL-2)
1. Check the boxes below for each 2. Select the BMPs to be implemented for each proposed feature. If neither BMP SD-B nor
proposed feature. SD-I is selected for a feature, explain why both BMPs are infeasible in the area below.
50-B 50-1 Minimize size of
Direct runoff to pervious Construct surfaces from impervious areas
areas permeable materials
□ Streets and roads u u ~ Check this box to confirm
[i) Sidewalks & walkways l!..I u that all impervious areas on
the site will be minimized
□ Parking areas & lots u u where feasible.
□ Driveways u u If this box is not checked,
□ Patios, decks, & courtyards u u identify the surfaces that
cannot be minimized in area
[i) Hardcourt recreation areas l!..I u below, and explain why it is
E-36 Page 1 of 4 Revised 04/23
□Other: ______ _ □ □ infeasible to do so.
C. !j] BMPs for Rooftop Areas: Check this box if rooftop areas are proposed and select at least one BMP
below.
(see Fact
Sheet BL-3)
If no BMPs are selected, explain why they are infeasible in the area below.
Iii SD-B
Direct runoff to pervious areas
OSD-C
Install green roofs
OSD-E
Install rain barrels
D. !j] BMPs for Landscaped Areas: Check this box if landscaping is proposed and select the BMP below
lil SD-K Sustainable Landscaping
(see Fact
Sheet BL-4)
If SD-K is not selected, explain why it is infeasible in the area below.
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
Iii Trash & Refuse Storaqe
□ Materials & Equipment Storaqe
E-36
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
SC-A SC-B SC-C
Overhead Separation Wind
covering flows from protection
adjacent
areas
[!] u [!]
□ □ □
Page 2 of 4
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-D SC-E Other
Sanitary
sewer
u
□
Containment
system
u
u
Revised 04/23
□
□
□ Loadinq & Unloadinq □ □ □ □ u □
□ Fuelinq □ u □ □ □ □
□ Maintenance & Repair □ □ □ □ □ □
□ Vehicle & Eauioment Cleaning □ □ □ □ □ □
□ Other: u □ LJ LJ □ u
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 Iii will be labeled with stenciling or signage to
discouraqe dumpinq (SC-F)
• Interior work surfaces, floor drains & Iii are not proposed □ will not discharge directly or indirectly to the MS4
sumps ... or receiving waters
• Drain lines (e.g. air conditioning, boiler, Iii are not proposed □ will not discharge directly or indirectly to the MS4
etc.) ... or receiving waters
• Fire sprinkler test water ... Iii 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 3 of 4 Revised 04/23
rtlflcatlon
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
ro·ect desi n.
Preparer Signature: A/ ti?--
1------f ______ ____.__ __ _ Date: 12/10/2024
Print re arer name: John Van Ryn
E-36 Page 4 of 4 Revised 04/23
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).
Add certified trash capture device to existing storm drain structure that is connected to the
storm drain.
The BMP used will be the Bio Clean Bio-Grate 12x12x12 model. The trash capture bmp will
be installed in the box inlet for the proposed detention basin in order to catch any trash
before entering the storm drain.
Trash Capture BMP Sizing:
As seen on the Bio-Grate fact sheet attached to this SWQMP, the Bio-Grate-Full-12x12x12
model which was selected for this site has a treatment flow rate of 1.04 CFS, and a bypass
flow rate of 1.24 CFS. Both of these allowable flow rates are greater than the flow rate
which the proposed basin outlet will experience during a 100yr-6hr storm event (0.86 CFS).
Reference Drainage Study for detailed storm water calculations.
[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.
TR-1 Catch Baisn Inlet Filter (Bio Clean Bio-Grate 12x12x12) PUD 2024-0009 N/A
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 Contents Checklist
Seauence
Attachment 1 a OMA Exhibit (Required) El Included
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 El Included on OMA Exhibit in
OMA ID matching OMA Exhibit, OMA Attachment 1 a
Area, and OMA Type (Required)* □ Included as Attachment 1 b,
separate from OMA Exhibit
*Provide table in this Attachment OR
on OMA Exhibit in Attachment 1 a
Attachment 1 c Trash Capture BMP Design □Included
Worksheets/ Calculations (Required)
Refer to Appendices J of the BMP
Design Manual for trash capture BMP
design guidelines
Use this checklist to ensure the required information has been included on the OMA
Exhibit:
The OMA Exhibit must identify:
0 Site topography and impervious areas
0 Site drainage network and connections to drainage offsite
0 Proposed grading (if applicable)
0 Drainage management area (OMA) boundaries, OMA ID numbers, and OMA areas (square
footage or acreage)
□Trash Capture BMPs (identify location and type of BMP)
5010 A VEN/DA ENCINAS -DMA EXHIBIT
CARLSBAD, CA 92008
s
SCALE: 1" = 20'
20
Plot May 08, 2025 at 1: 09pm P: \ACTIVE J08S\2439_Carlsbad 10 Hospitallity\CIVIL \APPLICATIONS\2439-DMA-EXHIBIT.dwg
'
LEGEND
PROPERTY UNE
RIGHT-OF-WAY
ROAD CENTERUNE
ADJACENT PROPERTY UNE
DRAINAGE BASIN BOUNDARY
DRAINAGE FLOW PA 1H
POST-PRO.ECT IMPERVIOUS AREA
POST-PRO.ECT DE MIN/MIS AREA
FLOW ARROW
BASIN SUMMARY
40
--
r tl Z 2 I
...
r· . . j ................. .................... . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . . .. . . . .. . . . . . . . . . . .. .. .. .. .. . . . .. . .. .. . . .. . . . .. . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . . . . . . .. . . . .
---------
7,782 S.F. (0.179 AC)
2,525 S.F. (0.058 AC)
5,257 S.F. (0.121 AC)
0.457 CFS
VAN RVN
CIVIL ENGINEERING I LAND SURVEYING
San Diego I Manteca I 858.521 .8100
vanrynengineering.com
Full Trash Capture
Full Capture Removes 100% of Trash ...
The Full Trash Capture line of inlet filters are listed as Certified
Trash Full Capture Systems by the California State Water
Resources Control Board in both grate inlet and curb inlet
configurations.
The filters allow for higher flow rates and cleaning is easy
and efficient, making them a great choice for demanding
applications.
~ ~ Bypass Flow Path -;,
Full Capture Sizing
Treatment Flow Path
BIO-CURB-FULL-12 2.85 UNLIMITED
BIO-CURB-FULL-24 2.85 UNLIMITED
BIO-GRATE-FULL-12-12-12 1.04 1.24
BIO-GRATE-FULL-18-18-12 1.78 2.79
BIO-GRATE-FULL-24-24-12 2.70 4.96
BIO-GRATE-FULL-24-40-12 3.70 6.35
BIO-GRATE-FULL-24-24-24 7.31 4.96
BIO-GRATE-FULL-24-40-24 9.53 6.35
BIO-GRATE-FULL-36-36-24 11.93 7.74
Note: Flow rate includes safety factor of two for screen capacity. Storage capacity based on filter basket at 50% full.
0.70
1.40
0.15
0.33
0.59
0.88
1.22
1.82
2.73
Mounting
Flange
ATTACHMENT 2
Trash Capture 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 2 must identify:
□ Typical maintenance indicators and actions for proposed trash capture BMP(s)
based on Section 7.7 of the BMP Design Manual
Final Design level submittal:
Attachment 2 must identify:
□ Specific maintenance indicators and actions for proposed trash capture BMP(s).
This shall be based on Section 7. 7 of the BMP Design Manual and enhanced to
reflect actual proposed components of the trash capture BMP(s)
□ How to access the trash capture BMP(s) to inspect and perform maintenance
□ 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 trash capture BMP and compare to maintenance thresholds)
□ Manufacturer and part number for proprietary parts of trash capture BMP(s) when
applicable
□ 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.)
□ Recommended equipment to perform maintenance
□ When applicable, necessary special training or certification requirements for
inspection and maintenance personnel such as confined space entry or
hazardous waste management