HomeMy WebLinkAboutCT 14-01; STATE MIXED USE 30; PRIORITY DEVELOPEMENT PROJECT STORM WATER QUALITY MANAGEMENT PLAN; 2018-05-30-
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limJ K&S ENGINEERING, INC.
~ Planning Engineering SuNeylng
CITY OF CARLSBAD
PRIORITY DEVELOPMENT PROJECT (PDP)
STORM WATER QUALITY MANAGEMENT PLAN (SWQMP)
FOR
STATE MIXED USE 30
PROJECT NO. CT 14-01
GR 2016-0040
DRAWING NO. 478-1A
ENGINEER OF WORK:
RCE 43235 EXP 3/31/20
-------PREPARED FOR:
STATE AND OAK-CARLSBAD, LLC
1106 SECOND STREET
ENCINITAS, CA 92024
CONTACT: MATTHEW GORDON
TELEPHONE: (619) 572-3556
IlECORD COPY
PREPARED BY:
K&S ENGINEERING, INC
7801 MISSION CENTER COURT, SUITE 100
SAN DIEGO CA, 92108
(619) 296-5565
CONTACT: HOSSEIN ZOMORRODI, RCE
DATE:
MAY 30, 2018
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RECEIVED
JUN 2 6 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 1a: DMA Exhibit
Attachment 1 b: Tabular Summary of DMAs and Design Capture Volume Calculations
Attachment 1 c: Harvest and Use Feasibility Screening (when applicable)
Attachment 1d: Categorization of Infiltration Feasibility Condition (when applicable)
Attachment 1 e: Pollutant Control BMP Design Worksheets I Calculations
Attachment 2: Backup for PDP Hydromodification Control Measures
Attachment 2a: Hydromodification Management Exhibit
Attachment 2b: Management of Critical Coarse Sediment Yield Areas
Attachment 2c: Geomorphic Assessment of Receiving Channels
Attachment 2d: Flow Control Facility Design
Attachment 3: Structural BMP Maintenance Thresholds and Actions
Attachment 4: Single Sheet BMP (SSBMP) Exhibit
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Project Name: STATE MIXED USE 30
Project ID: CT 14-01
CERTIFICATION PAGE
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 f,or-1)1'6je-acle&ign. /'' ,,,,.,_
/ \
HOSSEIN ZOMORRODI
Print Name
K & S ENGINEERING, INC.
Company
Date
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PROJECT VICINITY MAP
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Carlsbad
STORM WATER STANDARDS
QUESTIONNAIRE
Development Services
Land Development Engineering
1635 Faraday Avenue
(760) 602-2750
www.carlsbadca.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.
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: State Mixed Use 30 PROJECT ID: CT 14-01
ADDRESS: 3068 State Street, Carlsbad CA 92008 APN : 203-297-06, 08, 09
The project is (check one): D New Development Ill Redevelopment
The total proposed disturbed area is: 19,602 ft2 ( 0.45 ) acres
The total proposed newly created and/or replaced impervious area is: 17,609 ft2 ( 0.40 ) 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 CT 14-01 SWQMP #: 15-08
Then, go to Step 1 and foffow the instructions. When completed, sign the form at the end and submit this with your
application to the city.
E-34 Page 1 of4 REV02116
STEP1
TO BE COMPLETED FOR ALL PROJECTS
To determine if your project is a "devetopment project", please answer the following 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
0
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 with in an existing building):
8TEP2
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 :
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 U SEPA
Green Streets uidance?
2. Retrofitting or redeveloping existin g 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
0
0
0
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):
E-34 Page 2 of 4 REV 02/16
To determine if your project is a PDP, please answer the following questions (MS4 Permit Provision E.3 .b.(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.
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.
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 .
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
deveto ment ro·ect includes develo ment on an natural slo e that is twen -five ercent or reater.
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.
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 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 ro ·ect to the ESA i.e. not commin led with flows from ad·acent lands . "
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.
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 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%? (CMC
21 .203.040
YES NO
0
0
0
0
0
0
0
0
0
0
0
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 infonnation.
E-34 Page 3 of 4 REV 02/16
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)):
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:
YES NO
Existing impervious area (A)= ?,SOO sq . ft. D
Total proposed newly created or replaced impervious area (B) = 10,109 sq. ft.
Percent impervious area created or replaced (B/A)*100 = 74 %
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 statin "M ro·ect is a PDP ... "and com lete a licant information.
STEPS
CHECK THE APPROPRIATE BOX AND COMPLETE APPLICANT INFORMATION
Ill 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.
D My Project is NOT a 'development project' and is not subject to the requirements of the BMP Manual.
Applicant Information and Signature Box
A I. t N STATE AND OAK-CARLSBAD, LLC pp1can ame: _____ _,_,~-----------
Applicant Signature: -~ A I. t T"tl Manager pp 1can I e: ----------------
Date: O S:l 'JI,/ .J.o/8
• 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.
This Box for Citv Use Only
YES NO
City Concurrence: D D
By:
Date:
Project ID:
E-34 Page 4 of 4 REV 02/16
SITE INFORMATION CHECKLIST
ProJect Summarv lnfonnation
Project Name ST A TE MIXED USE 30
Project ID CT 14-01
Project Address 3068 State Street, Carlsbad CA 92008
Assessor's Parcel Number(s) (APN(s)) 203-297-06, 08, 09
Project Watershed (Hydrologic Unit) Carlsbad 904
Parcel Area 0.41 18,001 Acres ( Square Feet)
Existing Impervious Area 0.17 Acres ( 7,500 Square Feet) (subset of Parcel Area)
Area to be disturbed by the project 0.45 Acres ( 19,602 Square Feet) (Project Area)
Project Proposed Impervious Area 0.40 Acres ( 17,609 Square Feet) (subset of Project Area)
Project Proposed Pervious Area 0.23 Acres ( 10,109 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 Exlstina Site Condition andlDralnaae Patterns
Current Status of the Site (select all that apply):
~ Existing development
D Previously graded but not built out
D Agricultural or other non-impervious use
D Vacant, undeveloped/natural
Description I Additional Information:
Existing site consist of 3 lots with 7 buildings and landscaping. Existing buildings will be
demolished.
Existing Land Cover Includes (select all that apply):
l2J Vegetative Cover
D Non-Vegetated Pervious Areas
ti Impervious Areas
Description I Additional Information:
The existing site is already develop with 7,500 sq ft of impervious area and 10,501 sq ft of
pervious area
Underlying Soil belongs to Hydrologic Soil Group (select all that apply):
D NRCS Type A
VJ NRCS Type B
D NRCS Type C
D NRCS Type D
Approximate Depth to Groundwater (GW):
D GW Depth < 5 feet No GW
D 5 feet < GW Depth < 10 feet
~ 10 feet < GW Depth < 20 feet
D GW Depth > 20 feet
Existing Natural Hydrologic Features (select all that apply):
D Watercourses
OSeeps
D Springs
DWetlands
l2J None
Description I Additional Information:
There are no existing natural hydrological features onsite, the site is surrounded by commercial
and residential developmets.
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 drainage is urban, and currently there are 6 small residential buildings and
landscape with no underground storm drain system and no storm water treatment facility,
and no offsite runoff into the site.
The existing site is relative flat located at the NE corner of State Street and Oak Avenue. There
is a high point at the southerly end of State Street and drainage is North on State and West on
Oak Avenue. Approximately 62% of the site drains to State Street and 38% to Oak Avenue
Drainage system. The Northerly portion drains underground storm drain sytem at corner of
Carlsbad Village Drive and State Street which eventually discharges to Buena Vista Lagoon.
The Southerly portion drains to underground storm drain system on Oak Avenue which
eventually discharges to Agua Hedionda Lagoon.
Description of Proposed Site Development and Drainage Patterns
Project Description I Proposed Land Use and/or Activities:
The proposed construction of a four story mixed-use building consisting of 14 residential
units, 13 timeshare units, 4,529 sf of commercial and enclosed at grade parking garage.
List/describe proposed impervious features of the project (e.g., buildings, roadways, parking
lots, courtyards, athletic courts, other impervious features):
Being proposed one building covering the entire property.
List/describe proposed pervious features of the project (e.g., landscape areas):
The only proposed pervious areas are 9 planters.
Does the project include grading and changes to site topography?
,ives
O No
Description I Additional Information:
The proposed project includes grading for the proposed building and parking at street level.
Does the project include changes to site drainage (e.g., installation of new storm water
conveyance systems)?
{/Yes
ONo
Description I Additional Information: Runoff generated drains to proposed planters and there
will be no diversion of flow and proposed tributary areas are similar to existing conditions.
There is a small increase of runoff due solely to increase "C" value from medium density
residential to high density residential and this increase in flow will not have a negative impact
to the existing downstream storm drain system
EXISTING jQ100) PROPOSED (Q100)
STATE ST 0.76cfs 1.06 cfs
OAK AVENUE 0.46cfs 0.71 cfs
Identify whether any of the following features, activities, and/or pollutant source areas will be
present (select all that apply):
.(J On-site storm drain inlets
QI Interior floor drains and elevator shaft sump pumps
$Interior parking garages
l\tNeed for future indoor & structural pest control
,ltlandscape/Outdoor Pesticide Use
D Pools, spas, ponds, decorative fountains, and other water features
O Food service
{/J Ref use areas
D Industrial processes
o Outdoor storage of equipment or materials
o Vehicle and Equipment Cleaning
D Vehicle/Equipment Repair and Maintenance
D Fuel Dispensing Areas
o Loading Docks
~Fire Sprinkler Test Water
~ Miscellaneous Drain or Wash Water
D Plazas, sidewalks, and parking lots
Identification of Recelvlng 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):
The proposed runoff from the project drain 63% to Buena Vista Lagoon and the remaining
37% drains to Agua Hedionda Lagoon
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 Lagoon Toxicity Required
Buena Vista Lagoon Indicator Bacteria, Nutrients Required
Sediment/Siltation
ldenttftcatlon of ProJect Site Pollutants
Identify pollutants anticipated from the project site based on all proposed use(s) of the site (see
BMP Design Manual Aooendix B.6):
Also a Receiving
Not Applicable to Anticipated from the Water Pollutant of
Pollutant the Project Site Project Site Concern
Sediment ./ ./
Nutrients ./ ./
Heavv Metals ./
Organic Compounds ./
Trash & Debris ./
Oxygen Demanding ./ Substances
Oil & Grease ./
Bacteria & Viruses ./
Pesticides ./
ulrements
Do hydromodification management requirements apply (see Section 1.6 of the BMP Design
Manual)?
O Yes, hydromodification management flow control structural BMPs required.
D 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. f No, the project will discharge runoff directly to an area identified as appropriate for an
exemption by the WMAA for the watershed in which the project resides.
Description I Additional Information (to be provided if a 'No' answer has been selected above):
Site is located at the hydromofication exempt area per City of Carlsbad HMP exemption
Exhibit see Attachment 2a
Based on the maps provided within the WMAA, do potential critical coarse sediment yield areas
exist within the project drainage boundaries?
O Yes
O No, No critical coarse sediment yield areas to be protected based on WMAA 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
O 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 WMAA 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.
D 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:
Project is not whit in or doesn't receive or drains from critical coarse sediment yield areas, see
Attachment 2b for exhibit
Flow Control for Post.Project Runoff'
*This Section onl re ulred If h dromodlfication mana ment ulrements a
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)?
D No, the low flow threshold is 0.102 (default low flow threshold)
o Yes, the result is the low flow threshold is 0.102
D Yes, the result is the low flow threshold is 0.302
D Yes, the result is the low flow threshold is 0.502
If a geomorphic assessment has been performed, provide title, date, and preparer:
Discussion I Additional Information: (optional)
Other Site Requirementa and Constraints
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.
Ootional Additional lnfonnatlon or Continuation of Previous Sections As Needed
This space provided for additional information or continuation of information from previous
sections as needed.
( City of
Carlsbad
Project Name: State Mixed Use 30
Project ID: CT 14--01
STANDARD PROJECT
REQUIREMENT
CHECKLIST
E-36
Project lnfonnaUon
DWG No. or Building Permit No.: 478-1A
Source Control BMPa
Development Services
Land Development Engineering
1635 Faraday Avenue
(760) 602-2750
www .carlsbadca.gov
-
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 (Volume 5 of City Engineering Standards) 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~ustification 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.
• "NIA" 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
orovided.
8oun:e Control Requirement Appllad?
SC-1 Prevention of Illicit Discharges into the MS4 Ill Yes ONO 0 N/A
Discussion/justification if SC-1 not implemented:
SC-2 Storm Drain Stenciling or Signage Iii Yes ONo ON/A
Discussion/justification if SC-2 not implemented:
SC-3 Protect Outdoor Materials Storage Areas from Rainfall, Run-On, Runoff, and Wind OYes ONo Iii N/A Dispersal
Discussion/justification if SC-3 not implemented:
There will be no outdoor material storage
E-36 Page 1 of 4 Revised 09/16
Source Control Reaulrement (continued} AD oiled?
SC-4 Protect Materials Stored in Outdoor Work Areas from Rainfall, Run-On, Runoff, and o Yes 0 No IIJ NIA Wind Dispersal
Discussion/justification if SC-4 not implemented:
There will be no outdoor work areas
SC-5 Protect Trash Storage Areas from Rainfall, Run-On, Runoff, and Wind Dispersal Ill Yes ONO 0 N/A
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 Aooendix E.1 of BMP Manual for ouidance).
Ii] On-site storm drain inlets Iii Yes ONo D N/A
II! Interior floor drains and elevator shaft sump pumps Ill Yes 0 No D NIA
Ill Interior parking garages l)Yes ONo D NIA
Ill Need for future indoor & structural pest control ll]Yes ONo 0 NIA
Ill Landscape/Outdoor Pesticide Use Ill Yes 0 No 0 NIA
O Pools, spas, ponds, decorative fountains, and other water features OYes ONo Ill N/A
O Food service D Yes ONO ii N/A
1!11 Refuse areas Ill Yes ONo 0 N/A
D Industrial processes D Yes ONo Ill N/A
D Outdoor storage of equipment or materials OYes 0 No Ill NIA
O Vehicle and Equipment Cleaning OYes 0 No ii N/A
O Vehicle/Equipment Repair and Maintenance D Yes ONo Iii N/A
O Fuel Dispensing Areas OYes 0 No IIJ NIA
D Loading Docks OYes 0 No IIJ N/A
Iii Fire Sprinkler Test Water Iii Yes ONo 0 N/A
Ii] Miscellaneous Drain or Wash Water OYes ONo Iii N/A
D Plazas sidewalks, and oarklno lots OYes 0 No Ill N/A
For "Yes· answers, identify the additional BMP per Appendix E.1. Provide justification for "No" answers.
For additional source control BM P's applied to the proposed project see Attachment 4 "Appendix E .1"
E-36 Page 2 of 4 Revised 09/16
Site Design BMPs
All development projects must implement site design BMPs SD-1 through SD-8 where applicable and feasible. See
Chapter 4 and Appendix E.2 thru E.6 of the BMP Design Manual (Volume 5 of City Engineering Standards) 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.
• "NIA" 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
provided.
Site DNlgn Requlnunent I Applied?
SD-1 Maintain Natural Drainaae Pathways and Hydrologic Features I Bil Yes I 0 No IO N/A
Discussion/justification if SD-1 not implemented:
SD-2 Conserve Natural Areas, Soils, and Vegetation I OYes I 0 No I Ill N/A
Discussion/justification if SD-2 not implemented:
There are no natural soils, vegetation to conserve.
SD-3 Minimize lmoervious Area I ml Yes I 0 No I O NIA
Discussion/justification if SD-3 not implemented:
SD-4 Minimize Soil Compaction I Iii Yes I O No I D NIA
Discussion/justification if SD-4 not implemented:
SD-5 Impervious Area Dispersion I II Yes I 0 No I ON/A
Discussion/justification if SD-5 not implemented:
E-36 Page 3 of 4 Revised 09/16
Site Deslan Reautrement (continued, I Applied?
SD-6 Runoff Collection I Iii Yes I D No I D NIA
Discussion/justification if SD-6 not implemented:
SD-7 Landscaoina with Native or Drouaht Tolerant Species I III Yes I ONo I D NIA
Discussion/justification if SD-7 not implemented:
SD-8 HarvestinQ and UsinQ Precipitation I OYes I D No I Ill N/A
Discussion/justification if SD-8 not implemented:
Project is infeasible per form 1-7 see Attachment 1
E-36 Page 4 of 4 Revised 09/16
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.
The proposed project consist's of 9 DMA's which each area has it's own flow-thru planter
where the stormwater will be treated and addressing water quality requirements before
exiting the site. The site is located on the hydromodification exempt area per Attachment
2a, regarding the Management of Critical Coarse Sediment Yield Areas the proposed
development not whitin or doesn't receive or drains from CCSYA see Attachment 2b.
This SWQMP has shown LID design, source control and treatment BM P's that should satisfy
the requirements identified in the order and standards by treating and mitigating runoff to
the most extend practicable, and it is anticipated that the downstream water will not be
affected by the proposed development.
[Continue on next page as necessary.)
[Continued from previous page -This page is reserved for continuation of description of general
strategy for structural BMP implementation at the site.]
Structural BMP Summary lnfonnation
[Copy this page as needed to provide infonnatlon for each Individual proposed
structural BMP]
Structural BMP ID No. BMP-A, BMP-B, BMP-C, BMP-D, BMP-E, BMP-F and BMP-G
DWG 478-lA Sheet No. 4
Type of structural BMP:
o Retention by harvest and use (HU-1)
o Retention by infiltration basin (INF-1)
D Retention by bioretention (INF-2)
o Retention by permeable pavement (INF-3)
o Partial retention by biofiltration with partial retention (PR-1)
q'Biofiltration (BF-1)
o 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)
o Detention pond or vault for hydromodification management
o Other (describe in discussion section below)
Purpose:
¥Pollutant control only
D Hydromodification control only
o Combined pollutant control and hydromodification control
o Pre-treatmentlforebay for another structural BMP
o Other (describe in discussion section below)
Discussion (as needed):
-
-
-
-
-
·-
..
-
..
...
.,
..
-
-
-
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
Seouence
Attachment 1 a OMA Exhibit (Required) $Included
Attachment 1 b
See OMA Exhibit Checklist on the
back of this Attachment cover sheet.
(24"x36" Exhibit typically required)
Tabular Summary of DMAs Showing I~ Included on OMA Exhibit in
OMA ID matching OMA Exhibit, OMA Attachment 1a
Area, and OMA Type (Required)* o Included as Attachment 1 b,
*Provide table in this Attachment OR
on OMA Exhibit in Attachment 1 a
separate from OMA Exhibit
Attachment 1c Form 1-7, Harvest and Use Feasibility I~ Included
Screening Checklist (Required unless D Not included because the entire
the entire project will use infiltration project will use infiltration BMPs
BMPs)
Attachment 1 d
Refer to Appendix 8.3-1 of the BMP
Design Manual to complete Form 1-7.
Form 1-B. Categorization of Infiltration
Feasibility Condition (Required unless
the project will use harvest and use
BMPs)
Refer to Appendices C and D of the
BMP Design Manual to complete
Form 1-8 .
~Included
D Not included because the entire
project will use harvest and use
BMPs
Attachment 1e Pollutant Control BMP Design ,11ncluded
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 OMA
Exhibit:
The OMA Exhibit must identify:
~Underlying hydrologic soil group
$ Approximate depth to groundwater
IJ Existing natural hydrologic features (watercourses, seeps, springs, wetlands)
o Critical coarse sediment yield areas to be protected (if present)
o Existing topography and impervious areas
o Existing and proposed site drainage network and connections to drainage offsite
.,/J Proposed grading
$Proposed impervious features
u Proposed design features and surface treatments used to minimize imperviousness
$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)
~ Structural BMPs (identify location and type of BMP)
I
I
MEASURESTOACCESSTHESTRUCTURALBMP
I rt£ 6'6' MUST 6E AC-C£55n:l.E 10 £:Cf·\f"JIT Hilt~ faf h'NtH[NAACE . .1ca:ss R(-CtJ:ru.tENTS f~ M.'ltH[Nn+a: Wl.L v .. ,;:y 11TH n-c T'JPE C1" fA.CIJTY SfilCTED
2. 11\=t.TRdlC)~ BMP'S. B1cn.ru~ BMPS "I(} MCST ABC\f-OKl!l\/0 tflENTICH BASINS-ANO S>N.: fll.TERS WIU "'WtCALLY
R(WR( ROJIDE. LJ,NDSCAP( MAlhTE\ANO: USING T-£ $,AW[ ErJ.:P\IEHT ""HAf !S USED FCR ::v.E~AL LA\OSC#.f[ M.l"lf"(NANCf
,&J MS Tl-ESE BVPS M.AY R£01..IR£ 0:CAVATICN a Ct0GG£D ~ro, (E G. e:CR£TENTOI ~ Y.ECU,. ~ S,.NC F:R n.:E s-..~
n.:r8:. 'NO 9tOJlO B( ACC£SS1Bl..r TO APf'Rtff,IATt (OVPIIENT FOR 0.C.ti'VAllOH "'° ft~OVAL~CEMENi o= tJ([P..
1 A8C\£·CRO<.NO 0£1[NT JN B>Sl<S SHOU.ll IHQ.UOE ,CCiSS R"'PS FM "'!l\JCKS TO ENTtR 1\;[ BASI< Q ERI..C EQIJPIIDH
A.i\0 TO RfMO\f: MATERIALS.
4. Ur,('(RGROJ\O BMPS SUCH ..lS OCLNTION 1/>.U.T'S. MEDtA Fft..f(R'S. 01: GJ..JSS PO..l.UTA,..T stPAA:ATCRS US£D ,1,5 fMEal YS TO
OTHER EIMPS, rrr,c:AU.Y Rt:0.H ACC[SS f~ A VA:;TC'! '"RU(): TO REMO\( MAITTl.lrlS ~ETARY BMDS SUO, -.s UEDA Fl.!HS OR CROSS P<llLJT,t,J,U S£P.lRA1JRS UAY RECUR[ .t.CCESS BY A r~ M OTHH TR\JO< FOR ti£..JVERY A.-.0 R£MCV-".. Cf MEDIA :ARTRIOGES CR OfliIR !.'-ilIRNAl C()MP()ofNTS ACCESS REOJf<O.IOHS MUST SE ~(Rlf{O 'Mlli TH£
S"'IJHCMO! CF PR:J'~'1'RY 8IIPs.
~ vACIOR 11Ml<S AR£ LJ,RGE, H[AV'r, ANO OJFflCU.l ro MANE\AfR ST<OCTU<Al Bo.f'S !,Al AR£ .... ,U<£D BY v.CTOR
1111!0< WUST NCU.Oc A LE'IO. P>O >OJ.lCENT TO M STRUCTURAL 91/P, ~ITTRABI.Y 'Ml\; NO \£CETAOON OR ~IIIG>TKN srsn:u (OTl-'ERVIISE ',{G(l,.Tl(»j CR IRRICAOO... SYSTOI WAY 8( t(S'TROl!O BY 1-£ I/ACT~ TRUO:).
PLANTING NOTES:
I\ATIVE Pl.ANTS ~[5i..J£NT TC VARIA3-.:: now. TOl.ERNiT lO ~MMER CROJQil ,\~ 54.TUU T[C $Ol. CCH!lOOS. (; THNGR"5S.
'1ER8A t.UNZA, ~A~ 9.l.t:AHRIS. CNJf~NI'-F'IO..D SEDCE, SAN CXE:.O StI:«. RVS TY S[CG(. SA. T CRASS, IIEXIC-'N RUSH,
C,lUf'O,.'"'t;l.t, CR('I' R\..SH. CANYCN ?RJNC:: 'MLC RYE. NEvlN'S 9>~~Y. O((fi(RASS A.'IO LO'AI El..URUSH. fl'U.Y li{CCTATE aonou « 8.\Sl's.
BMP CATEGORY/TYPE
blOll.lH,t.lJ(N dW (tlf-1) (~u.aw lrtaJ fll».IHI~
1-w w c:::: 1-(/)
w 1-<C 1-(/)
PROJECT AREA:
(.t1 t,C~S
DISTURBED AREAS:
C 45 Ac,,[S
CCSYA NOTE:
PRO..ECT IS ri<>T Yltl ~ a;, XlES'fT RECO',,£ CR ~AQ,jS f'RCil ~ITICAI.. COAR$£ 'x!ltWENT ~1ELD W.:AS
SOIL TYPE NOTE:
Tl£ ENtR'E 51TE IS CLASSfE) AS IJIC-M~,a L::icmy Cocne SmJ: SOL fYP{ 8
GROUNDWATER NOTE:
A?PROXJU~TF OFPTH ~ CRMOW,.lfR C'$ t3 FITT snow :Jl()W QI.IN SF PRflJMAAY GFOTFOiN:'.AI
£VALUATICN rM SlAlI ANO ON<, LLF 0AT£0 O(C(MB(R 24, 2013 Pfi:o.£C-NO. 6636-A-SC. fH£RES lS
~0 GROUND IATER CN~iE P£R GAMA ~0<.ER
WDID NO:
NOT ,'fFUC~Bl.E. Ffo'o..ECT 1S LESS THAN 1 ACRE
BMP"B" ... >-w .....J .....J
<C
1-w ~0--.,_J>
I-tJ-
1 ~~··~-
1
1-tr· ~ ->r (/) : ...
~ ;: Ile. ~ . ·I 5 · I I ' -~ _..A ~·' , , 5 th/~; ~7 5 ; ·qzr~~-$-~ _j)& ~ --j 1 /
OMA DISTRIBUTION
OAK AVE
)MA,l·~Sf
~S li55SF
:>MAO 111!dF
TOTAL: ~552 S~
STATE ST
81/:l"C" ZCOSF OWA1 mos~
SM?"C' 10.Js:= OM,U llldO Si=
EIM?"U" 9lSf OYA3 1512si=
DM.o\1 1$JS:-
0L'AS 2)6,JS;
DMA:J 1s10si=
TOTAL· 9662 SF
S~AP' ,. 2H 3f
3,IP"A" 21e5s;
31,.11'-S" 5:JSr
iSI.F'"'E" ,2s-=
M>,:0 IOSSF
3Mf'"'G'";47SF
OAK AVENUE
ROOF PLAN °"~'
SIR'.:C~~"l!.S 'MOt 'jlll.T(RM:)Ct"
,·
REQUIRED TREATMENT CONTROL BMP TABLE
DESCRIPTION QUANTITY
flQ',\ THil· Pl.ANTU~ (Q.£MSl'1C; l [A.
00,w,;SPC\JT
('lf.lNCUT '\111lt 'IU,1FRTl(),J 0?
.\80'.1: PCNOl"IC OErnt
FlN!SH ~UtFACF·
.1· O. lf-'1.1. PIP{ CCNICCT
TO ST'IEET
-0=:--·
12· Q.1'\IEL (J/!" TO 5/8°) O't JMI ,t,PPRCI/ED .,.,... imAL
DETAIL ONSITE FLOW THROUGH PLANTER
NCT TO SCALE
c:,
c:,
,r:: ... , .. . ' ·. l-· .,~•.j' ;, ~ ~~'>--~J/., OAK AVENUE
.,,. ·.r SOURCE CONTROL
;~
.....J
<C I
t
BMPIJI
LEGEND
!ID!
CM.\ TO STAT£ S1REET
ow" iO OA.K A\'E)ruE
DRAIN.Act MA.'IACEMEHT AREA
ill!ell.
I I !> ·.-_._ .. j
BMP TABLE
"""""" I SYJ.1:iOl C~ OTY l)AA.-..{; SHEET "'5f"EC'OCIH NO. NOjS) FRl'O\JENCY
MAI( TENANCE FRE.OUEHCV
TREATMENT CONTROL
@-@~F,~TE,-TC-32 7 .&71-1SW 1 AS/,jEEOED :1 TIWES A YEAR
SOURCE CONTROL
0 ~I
SITEOEstGW I [!] lANCSCAPE
EfACIENT I IRRIGATICN
~ so.:12 2 .f71S-1SW 1 ASNEEOEO AS fl.HOED
SO-iO
1 .&78-lSW 1 AS~E.EOE.O AS t,,.EECED
S0.12
SWQMP NO._·~N~/A~--
MAINTENANCE AGREEMENT DOCUMENT: YES Jl... NO_
RECQROATlONNO.··-----
PARTY RESPONSIBLE FCR MAINTENANCE:
NAVE: STATE AND ON<,C~ U.C
ACOf;.ESS: • "06 SECOh'D STREET
E.~NITAS_,_(:_~~.4
CONTACT. WArn£',\'GOR()Or,,
PHCtlE NO. f619) ST2..j55li
PLAN PREPARED BY
NAVE: 1-0SS&I ZOMOAAQ01
COMPANY i<&.S ENGINE£~
ADDRESS i801MISSIOHCENTE~CT,
~ SAN OEOO._CA_~1ca
PHON!:.NO.~
BMPNOTES:
CERTIAC,t.TlON -Urn
1. TI-ESE BJ.FS ME MA.~ATO~ TO BE INSTALLEO PERM»i'UFACTURER'S
RECOWJENO'-TIOhS OR MSE Pl.HIS.
2. '° CHANGES TO THE PROPOS::D BYPS OH Tl-IS S>,ffT VtffltOVT ~
APf'R<Nl,J.. FROM T-iE ClfT ENGIEER.
l 'IOSU6S,nmc:,t.13 TO THE IMTER1ALOR T'l'PES ORP\NfTI.'«'.. TYPES
WfTl10UT PRKlR ~Al FROM THE QTY ENGINEER.
4. '.c>OCC\JP/itHCYWI.L.6EGRAHlEOUNT1.. nECfTYINSPECTION ST.I.FF
HAS NSPECTEO T>IS PROJECT F~ APPROPRIA.TE 8MP CONSTRUCTlON
~ INSTAUATION.
S.. R:EFE~ TO MAINTEHANCEAGRE:E~ENT OOCUMENl .
ii,. SEE PROJECT SWMP FOR AOOfTIONAL. if,FQRMA.TION.
~-e-
Attachment 1 a
"""'"''" I I I H:ET I CITY OF CARLSBAD I s,,ms I
j... -----+----------------,lf-----ll---1-1--11----ll 1
ENGINEERING DEPARTMENT
1
OMA EXHIBIT
~ K& S ENGINEERING, INC.
Plarri'g . Engi'leerirg . S<ney,ng
'3 10 20 40 60 t...-t.-1 f
~~A.PHI: SC.l.LE: 1" • 20·
IF PLAN SIZE IS LESS THAN 2•"x36", THIS IS A
REDUCED COPY SCALE PLAN ACCORDINGLY.
~J}-j.'(J,~:::.::.:11<:· =m,?z:@mtt> ;:
TO "llN t.E.'IGW • • • '. l" cutrAU. ?IPE:OU: Q ($ :>i,.J..'ttER U:2' ""',ur,rus,..~.,,,..c, il.OCK Oit :,0s11N,::
r)IJN(IA."10H
JR>~S '5
ltfCllJ~O SOI.
DETAIL STREET FLOW THROUGH PLANTER BMP "F & G"
NOT TO SC,\L£
STATE MIXED USE 30
I I
& I 1GR2016-0040 RP1•.01, I OAT[ ....... I DAT[ 1 ....... 11 PROJECT NO. I DRA\~NC NO
I OTH<R """'°""-QTY .... ,v.... Cl 14-:)1 -P8-1SW >•It REV1Sl0f'< OESCR1PTIO~
Appendix I: Forms and Checklists
1. ls there a demand for haivested water (check all that apply) at the project site that is reliably present during
the wet season?
~ Toilet and urinal flushing '6 Landscape irrigation
La ndtype (Table B.3-1 J= Resldentlal/Commercia I
Total use per resident/employee ( Table B3-1)= 9.3
Plant water Use ( Table B.3-2)= Moderate 0 Other: _____ _ 36hr Irrigation demand (Table B.3-3)= 1,470 Gal/Ac (per 36hr period)
Total Resident/Employee= 27 Residents/, 54 Persons
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.
LI= 1,178 sf, Landscape Area= 0.027 Ac= 1,470 Gal x 0.027 x 1.5 Dav= 7.95
[Provide a summary of calculations here] Day-Ac 7.48 Gal/Ft3
Total 36hr demand= T & U +LI= 100.70 +7.95 = 0.16
DCV 671
T & U = 9.3 Gal x 54 Persons x 1.5 day= 100.70
Day 7 .48 Gal/Ft3
3. Calculate the DCV using worksheet B.2-1.
DCV = __ 6_7_1 __ (cubic feet)
3a. ls the 36 hour demand greater
than or equal to the DCV?
D Yes / v'No c>
-0.
Harvest and use appears to be
feasible. Conduct more detailed
evaluation and sizing calculations
to confirm that DCV can be used
at an adequate rate to meet
drawdown criteria.
3b. Is the 36 hour demand greater than
0.2SDCV but less than the full DCV?
I 9' No c:::> D Yes
.(\.
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 dnuning in longer than 36 hours.
ls harvest and use feasible based on further evaluation?
D Yes, refer to Appendix E to sclect and size harvest and use BMPs.
~ No, sdect alternate BMPs.
I-2
3c. Is the 36 hour demand
less than 0.25DCV?
Yes
J).
Harvest and use is
considered to be infeasible.
February 2016
Geotechnical • Geologic • Coastal • Environmental
5741 Palmer Way • Carlsbad, California 92010 • (760) 438-3155 • FAX (760) 931-0915 ° www.geosoilsinc.com
MEMORANDUM
DATE: October 21, 2016 W.O. 6636-A-SC
(Revised December 29, 2016)
TO: State and Oak, LLP
c/o MAA Architects
2173 Salk Avenue, Suite 250
Carlsbad, California 92008
Attn: Mr. Kirk Moeller
From: Robert G. Crisman, CEG 1934
SUBJECT: Revised Discussion of Permanent Site Design, Storm Water Treatment and
Hydromodification Management, 3068 State Street, Carlsbad, California
References: 1. "Geotechnical Update, 3068 State Street, City of Carlsbad, San Diego County, California, dated
March 23, 2015
2. "Preliminary Geotechnical Evaluation, 3068 State Street, Carlsbad, San Diego County, California,"
W.O. 6636-A-SC, dated December 24, 2013, by GeoSoils, Inc.
3. "Engineering Design Manual, Volume 5, Carlsbad BMP Design Manual, dated February 16, 2016,
by the City of Carlsbad.
4. " Grading and Improvement Plans for: State Mixed Use 30, CT 14-01, Sheet 1-3, Job No. 13-038,
Plot dated July 10, 2015, by K&S Engineering, Inc.
In accordance with your request, and authorization, GSI has reviewed the geotechnical reports
(Reference Nos. 1 and 2), and the grading plan (Reference No.4), for the purpose of preparing City
Form 1-8. and Work Sheet 0 .5-1, included in the City's BMP Design Manual (Reference No. 3), with
respect to site preparation and the construction of the planned multi-unit residential building
(Reference No. 4). Per Form 1-8, the site is classified as "No Infiltration."
Unless specifically superceded herein, the conclusions and recommendations presented in
Reference No. 1 remain valid and applicable. The conclusions and recommendations presented
herein are professional opinions. These opinions have been derived in accordance with current
standards of practice, and no warranty is express or implied. Standards of practice are subject to
change with time. GSI assumes no responsibility or liability for work or testing performed by
others, or their inaction, or work performed when GSI is not requested to be onsite, to evaluate if
our recommendations have been properly implemented. Use of this report constitutes an
agreement and consent by the user to all the limitations outlined above, notwithstanding any other
agreements that may be in place. In addition, this report may be subject to review by the
controlling authorities.
Attachment: City BMP Form 1-8 and FOS Worksheet 0.5-1
Appendix I: Forms and Checklists
• • • t ' • ' • • ~· • • • -'' ' • ' • • • • .~ Ca~cgorization of Infiltration ~ondition ·. ., .. . ·,. Form l -s ·-, ... ·_
Part i ~,Fun furnti'at1~11."i"e•sit>il1fi·s"c~c~iiie"'cr.1terf~ . ' · ... Y ,:· :~ .:· ·":. ' ·' , , r
, I\ \ :,. ~ I : '. • • ~· • ~ • • .'
Wou,)d_!,n.':il~~ti~ii: of tbi r~p .ddl;it_~-v·oluipe bcf~lb1~ff.om ~ ;hfs,lcal p~~sp~ti~~ ~1th.~ut'al)y. unJesi~a.ble ~ons~~l!e_nc~ .
. th~! ~,wi~t be ~~~-?n,a~Jy m1tlg~ted?_ .. . . ·.. . ,, _ . -' . ., . '. . .. . , . · '" . . . . ,-~ . __ .. ,_
•I• ' ~ '.• •, , ~ ' ~ I , \ ~ '• • •
~c.re~JiJng:Quest_lo~ · · -,. ·. · · Yes , ,, . . . .. No
Is the estimated reliable infiltration rate below proposed facility locations greater
than 0.5 inches per hour? The response to this Screening Question shall be based on
a comprehensive evaluation of the factors presented in Appendix C.2 and Appendix D.
Provide basis:
X
Yes. The United States Department of Agriculture {USDA) has evaluated the infiltration rate of natural surface soils
as on the order of 0.57 to 1.98 in/hr {Hydrologic Soil Group 8), based on soil taxonomy, which characterized site soil
as belonging to the "Marina Loamy Coarse Sand." However, the USDA's description of the Marina Sand indicates
that it is developed within Eolian sand derived from mixed sources. Based on our site exploration and review of
regional geologic mapping, site soils are mapped as marine and terrestrial "paralic'' deposits derived from many
regional formations, and typically contain local areas of fine grained soils. Our experience with similar site soils in the
vicinity, including the geologic units observed and/or encountered during our subsurface investigation {Reference No.
1), indicate that these soils typically become denser, and less permeable with depth, below more permeable surficial
layers of topsoil and colluvium. As such, the resultant infiltration rates for these much denser formational materials
would be expected to be well below the rate evaluated by the USDA. Furthermore, artificial flll created by the
recommended removal/recompaction of onsite soils would also be considered to be of a very low permeability.
Actual onsite infiltration testing is considered unnecessary, as regardless of the results, the reduced permeability of
formation at depth will tend to result in the lateral migration of water and saturated conditions at, or near the surface,
increasing the potential for distress to foundations, floor slabs, etc., due to either soil saturation and settlement, or
increased water vapor transmission through slabs/foundations, with resultant distress. Utility trenches, and planned
below grade building walls would also be subject to the adverse effects from water/moisture infiltration.
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion
of study/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 Question shall be based on a comprehensive evaluation of the factors
presented in Appendix C.2.
Provide basis:
X
No. The reduced permeability of formation at depth will tend to result in the lateral migration of water and saturated
conditions at, or near the surface, increasing the potential for distress to foundations, below grade building walls, floor
slabs, etc., due to either soil saturation and settlement, or increased water vapor transmission through
slabs/foundations, with resultant distress. There is an increased potential for the creation of perched groundwater
{mounding) conditions along zones of contrasting permeabilities, including shallow cuVfill contacts, and transitions
between potentially clayey and sandy formational materials within the formation. Utility trenches can potentially act
as trench drains and provide conduits for the movement of excessive moisture beneath the structure(s). Further such
utility trenches would be subject to piping and/or settlement in distress to overlying improvements, both onslte and
offsite.
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion
of study/data source applicability.
State and Oak, W.O. 6636-A-SC 1-3 February 2016
Appendix I: Forms and Checklists
3
•. I
·.,·: .. ... ·-·. ~ .
;~ ,{ •.• --~~t .::·'
I . ~ J '.~· ; • 'j •
Screenlii'g.Qiicstion· "'' "'": t_ , I .~, • ~ ' • • , 1
-', ·,: ... ·'.!·
l ' '\.
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 comprehensible evaluation of the factors
presented in Appendix C.3.
Provide basis:
X
Yes. A review using the Geotrackerwebsite (http://www.geotracker.waterboards.ca.gov) did not indicate the presence
of any documented onsite contamination. However, numerous LUST (leaking underground storage tank) sites are
located in the vicinity. Further review indicates that sites in relatively close proximity to the site are "closed." A
perched groundwater table was evaluated at a depth of about 13 feet below existing surface grades in 2008 (see
Reference No. 2), and should be considered in BMP design.
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 a change of seasonality of ephemeral streams
or Increased discharge of contaminated groundwater to surface waters? The
response to this Scteening Question shall be based on a comprehensive evaluation of
the factors presented in Appendix C.3.
Provide basis:
X
Yes. The site currently drains offsite and no runoff appears to be retained onsite. A full infiltration BMP would reduce
runoff into the adjacent lagoon. The regional groundwater table is not considered a factor in the development of this
site.
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion
of study/data source applicability.
Part 1 In the answers to rows 1-4 are "Yes" a full infiltration design is potentially feasible. The feasibility
Result* 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
Proceed
to Part 2
"'To be completed using gathered site infonnation and best professional judgement considering the definition ofMEP in the MS4
Pennit. Additional testing and/or studies may be required by [City Engineer] to substantiate findings.
State and Oak, W.O. 6636-A-SC I-4 February 2016
Appendix I: Forms and Checklists
5
Do soil and geologic conditions allow for infiltration in any appreciable
rate or volume? The response to this Screening Question shall be based on
a comprehensive evaluation of the factors presented in Appendix C.2 and
AppendixD.
Provide basis:
X
Yes, the United States Department of Agriculture (USDA) has evaluated the infiltration rate of natural surface soils In
the vicinity as on the order of 0.57 to 1.98 in/hr {Hydrologic Soll Group B), based on soil taxonomy, which
characterized site soil as belonging to the "Marina Loamy coarse Sand." However, the USDA's description of the
Marina Sand indicates that it is developed within Eolian deposits derived from mixed sources. Based on our site
exploration and review of regional geologic mapping, site soils are marine and terrestrial "paralic" deposits derived
from many regional formations, and typically contain local areas of fine grained soils. Our experience with similar site
soils In the vicinity, including the geologic units observed and/or encountered during our subsurface Investigation
(Reference No. 1 ), also indicate that these soils typically become denser, and less permeable with depth, below more
permeable surficial layers of topsoil and colluvium. As such, the resultant infiltration rates for these much denser
formational materials would be expected to be well below the rate evaluated by the USDA. Artificial fill, created by the
necessary removal/recompaction of onslte soils would also be considered to be of a lower permeability.
Actual onsite infiltration testing is considered unnecessary, as regardless of the results, the reduced permeability of
formation at depth will tend to result in the lateral migration of water and saturated conditions at, or near the surface,
increasing the potential for distress to foundations, floor slabs, etc., due to either soil saturation and settlement, or
increased water vapor transmission through slabs/foundations, with resultant distress. Utility trenches, and planned
below grade building walls would also be subject to the adverse effects from water/moisture Infiltration.
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion
of study/data source applicability.
6
Can inflltration in any appreciable quantity 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 Question shall be based on
a comprehensive evaluation of the factors presented in Appendix C.2.
Provide basis:
X
No. The reduced permeability of formation at depth will tend to result in the lateral migration of water and saturated
conditions at, or near the surface, Increasing the potential for distress to foundations, below grade building walls, floor
slabs, etc., due to either soil saturation and settlement, or increased water vapor transmission through
slabs/foundations, with resultant distress. There is an increased potential for the creation of perched groundwater
{mounding) conditions along zones of contrasting permeabilities, including shallow cuVfill contacts, and transitions
between potentially clayey and sandy formational materials within the formation. Utility trenches can potentially act
as french drains and provide conduits for the movement of excessive moisture beneath the structure(s). Further such
utility trenches would be subject to piping and/or settlement resulting In distress to overlying improvements, both
onsite and offsite.
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative-discussion
of study/data source applicability.
State and Oak, W.O. 6636-A-SC February 2016
7
Appendix I: Forms and Checklists
' -·,, .. /'f1•,.;•: I
... j ~~ " !
Can Infiltration in any appreciable quantity be allowed without posing
significant risk for groundwater related concerns (shallow water table,
storm water pollutants or other factors)? The response to this Screening
Question shall be based on a comprehensive evaluation of the factors
presented in Appendix C.3.
X
Provide basis:
Yes. A review using the Geotrackerwebsite (http://www.geotracker.waterboards.ca.gov) did not Indicate the presence
of any documented onsite contamination. However, numerous LUST (leaking underground storage tank) sites are
located in the vicinity. Further review indicates that sites in relatively close proximity to the site are "closed." A
perched groundwater table was evaluated at a depth of about 13 feet below existing surface grades In 2008 (see
Reference No. 2), and should be considered in BMP design.
Infiltration does have the potential to create a shallow "perched" water table, thereby increasing the potential for
distress to the structure(s) due to water vapor transmission through foundations, slabs, and any resultant corrosive
effects on metal conduit in trenches.
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion
of study/data source applicability.
8
Can infiltration be allowed without violating downstream water rights?
The response to this Screening Question shall be based on a comprehensive
evaluation of the factors presented in Appendix C.3.
X
Provide basis:
The site currently drains offslte and no runoff appears to be retained onslte. The regional groundwater table is not
considered a factor in the development of this site.
Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion
of study/data source applicability.
Part2
Result*
If all answers from row 5-8 are yes then partial infiltration design is potentially feasible. The
feasibility screening category is Partial Inflltration. No
lnflltratlon If any answer from row 5-8 is no, then infiltration of any volume is considered to be
infeasible within the drainage area. The feasibility screening category is No Infiltration.
•Tobe completed using gathered site information and best professional judgement considering the definition ofMEP in the MS4
Pennit. Additional testing and/or studies may be required by Agency/Jurisdictions to substantiate findings.
State and Oak, W.O. 6636-A-SC 1-6 February 2016
Appendix D: Approved Infiltration Rate Assessment Methods
Worksheet D.5-1: Factor of Safety and Design Infiltration Rate Worksheet, State and Oak W.O. 6636-A-SC
,·. ··· 'f : , A: .. s.'s.;1-'·io;e··d·~.: : r ,;;,J t,,.·r.· P. ,-d·,· t,-.(·,.) • ~:· .. ,· g ... , .. 1J .... : .... ~~ ~z:. .... ' .. !!> UC .P ~. . '"c~or·qrjferia . '. -~ : .',.
• I I • ~ ; l "'' • • , •
A Suitability
Assessment
Soil assessment methods
Predominant soil texture
Site soil variability
Depth to groundwater/impervious layer
Suitability Assessment Safety Factor, SA= :Ep
Level of pretreatment/expected sediment loads
Redundancy/resiliency
B Design
Compaction during construction
Design Safety Factor, S8 = :Ep
Combined Safety Factor, S,o1a1= S,.. x S8
Observed Infiltration Rate, inch/hr, K..t,..,...,
(corrected for test-specific bias)
Design Infiltration Rate, in/hr, K.i,.;,0 = K.it.,av.., I S10,.i
I .. ,.
-
Briefly describe infiltration test and provide reference to test forms:
I
W:cij~t.(w). :· · .ya1ti~ (~ .. ·; ·. ·~~"'·~ ~ ,·.
0.25 3 0.75
0.25 1 0.25
0.25 2 0.50
0.25 2 0.50
2.0
0.5
0.25
0.25
' , . ', . I ..
' ·, ·, '
Soil Survey Maps, and site specific geologic information presented in Reference No. 2.
D-19 February 26, 2016
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.2-1 DCV
2 ,\rea tributa()' to HMP M
3 ,\rea weighted runoff fac tor (estimate using Appendix H.1.1 and B.2.1)
4 Trees Credit Volume
5 Rain barrels Credit Volume
6 Calcula1c DCV = (3630 x C x d x J\) -TCV -RCV
City of Carslbad Design Manual
Appendices
Effective Date: February 16, 2016 13-10
PER STORM WATER STANDARDS TABLE B.1-1
Total Tributary Arca
Roof
Ammcnded, Mulched Soils or l-1n<lscapc
Impervious Tribut:t()' Arca
1>crvio11s Tributa()' Arca
February 2016
Calculate Wc=(Ca•)(Arca lmp)+(Cb•)(Arca Pcrv)/Total Arca
A=
C=
TCV=
RCV=
DCV= 116
A=
Ca=
Cb=
A imp=
,\per=
We=
acres
unitlcss
cubic-feet
cubic-feet
cubic-feet
sq ft
unitless
sq ft
sq ft
sq ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs
v ......... --.. .,. .... ~•·•v-,.,. •••··-·-~··-·•·•••••• •-,.·••• • -;1DMJ\ 2 I ~(~'#' · • · , · • t~ , . · · • ' • ; • • _ · ,
''Wotlaihcct 8 .5-t (Pa.gc ! of2)
11111 Remaining DCV after implementing retention B'tvfPs
ial Retention
2
9 Volume retained by BMP [[Line 4 + (Line 12 x Llne 8))/12] x Line 7
10 DCV that requires biofiltration [Line t -Line 9]
BMP Parameten
11 Surface Pondin 6 inch minimum, 12 inch maximum
12 Media Thickness (18 inches minimum], also add mulch layer thickness to this line
for ming calculations
13 Aggregate Star.age above underdrain invert (t 2 inches typical) -use 0
inches for sizing if the aggregate is not over the entire bottom surface area
15 Media filtration rate to be used for si7..ing (5 in/hr. with no outlet control; if the filtration
r.ate is controlled by the outlet use the outlet controlled rate which will be less than 5
in/hr.)
Outlet Control Rate (Q) x 3600 S / (Line 7 x 12) ---> Q
16 .Allow:iblc Routin Tune for sizin
17 Depth filtered during storm [ Line 15 x Line 16]
18 Depth of Detention Stonge
(Line 11 + (Linc 12 x Linc 14) + (Line 13 x Line 5)J
19 Total Depth Treated [Line 17 + Line 18)
0
24
0
0.40
0
0.1
26.1
89.9
6
30
14.4
44.4
Note: I~ 7 i• usal to estimate the amounl of volume rcmincd by the BMP. Updllre assumed surf.ace acca in Linc 1 until
its cquiv:tlcn1 to lhc ttquircd biofilh2rion footprint (either Linc 21 or Line 23)
BMP"A"
in/hr.
hours
inches
in/in
inches
s -ft
in/in
cubic-
feet
cubic-
feet
hours
inches
inches
inches
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs (contim1ed) BMP"A"
Simple'SizinglMcthod forBiofillralionlJMP,'t>.MA1 +'DMA 2 I Worksheet B:S-1 (Page 2 of 2) .. l f11 1·' • .~~ . . . . ' Option 1 -Biofiher 1.5 times th~ DCV
20 Required biofiltered volume [1.5 x Line 1 O] 134.85
21 Required Footprint [Line 20/ Line 19] x 12 36
Option 2 -Store 0.75 of remaining DCV in pore• and ponding
22 Required Storage (surface+ pores) Volume [0.75 x Line 10] 67.43
23 Required Footprint [Line 22/ Line 18) x 12 56.19
Footprint o( the BMP
24 Area dninin~ to the BMP ~ .. .·.
25 Adjusted Runoff Factor for dr.unage area (Refer to Appendix B.1 and ·--
B.2)
26 Minimum BMP Footprint [Linc 24 x Llne 25 x 0.03] 72
27 Footorint of the BMP = MaximumrMinimumfLlne 21, Line 23) Llne 26) 72
Note: Line 7 is used to estimate the amount of volume retained by the BMP. Update assumed surface area in Line 7
until its equivalent to the required biofiltration footprint (either Line 21 or Line 23)
cubic-feet
sq-ft
cubic-feet
sq-ft
·-
sq-ft
sq-ft
SQ-ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.2-1 DCV
2 Arca tributary to BM I' (s)
3 Arca weighted runoff factor (estimate using Appendix B.1.1 and B.2.1)
4 Trees Credit Volume
5 Rain barrels Credit Volume
6 Calculate DCV = (3630 x C x d x A) -TCV -RCV
City of Carslbad Dcsiw1 Manual
Appendices
Effective Date: Febru:tl)' 16, 2016 B-10
PER STORM WATER STANDARDS TABLE B 1-1
Total Tributary Arca
Roof
Ammcndcd, Mulched Soils or Landscape
Impervious Tributary Arca
J>crvious Tributary Arca
February 2016
Calculate Wc=(Ca*)(,\rca Jmp)+(Cb*)(Area J>crv)/Total Arca
,\=
C=
TCV=
RC\/= 0
OCV= 66
A= ~~
Ca= 11:JR·
,;i ~
Cb= ~~~·
,\imp= ~
,\per= D -· '
We= 0.9000
acres
unitlcss
cubic-feet
cubic-feet
cubic-feet
S<J ft
unitless
unitlcss
S<J ft
sq ft
sq ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs
Remaming DCV after implementing retention BMPs
Panilll Retention
2
3 below the underdrain
4
5
6 · e 4/ Line 5
7 Asswned surface area of the biofiltration BMP
8 Media retained ore stora e
9 Volume retained by BI'vfP [[Line 4 + (Line 12 x Line 8))/12] x Line 7
10 DCV that requires biofiltration (Line 1 -Line 9]
Parametel9
11 Surface Pondin 6 inch minimum, 12 inch maximum]
12 Media Thickness [18 inches minimum], also add mulch layer thickness to this line
for sizing calculations
13 Aggregate Storage above underdrain invert (12 inches typical) -use 0
inches for sizing if the aggregate is not over the entire bottom surface area
14
15 Media filtration rate to be used for sizing (5 in/hr. with no outlet control; if the filtration
rate is controlled by the outlet use the outlet controlled rate which will be less than 5
in/hr.)
Outlet Control Rate {Q) x 3600 S / (Line 1 x 12) ---> Q
16
17
18 Depth of Detention Storage
(Linc 11 + (Line 12 X Li.oe 14) + (Line 13 X Line 5))
19 Total Depth Treated (line 17 + Linc 18}
0
24
0
0.40
26.1
39.9
6
30
14.4
44.4
Note: Line 1 is used to estimate the amouot of volume: n-r.tim.,J by the BMP. Up<hte assumed surf.ace area in Linc 1 until
its cquiv2lcn1 10 the required bioliltration footpoot (eithtt Linc 21 or I.inc 23)
BMP"B"
in/hr.
hours
inches
cubic-
feet
cubic-
feet
hours
inches
inches
.inches
Appendix B: Storm Water Pollutant Control Hydrolog:ic Calculations and Sizing Methods
BMP"B" Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs (continued)
Si~Jc 'Sizing Met boil l'or'Biofiltrauon "BMPs'DMA 3 .. · ~ ··.~--:~·.iworkshectl3'.5-1!{Pagc 2or2r-1 {,~·. : . ' :-.. <. " J ! ..
Option 1-Biofllter 1.5 times the DCV 1
20 Required biofiltered volume [1.5 x Line 10) 59.85
21 Required Footprint [Line 20/ Line 19) x 12 16
Option 2 -Store 0. 75 of remaining DCV in pore• and ponding
22 Required Storage (surface+ pores) Volume (0.75 x Line 10) 29.93
23 Required Footprint [Line 22/ Line 18] x 12 24.94
Footprint o( the BMP
24 Area draining to the BMP ).ID:
25 Adjusted Runoff Factor for drainage area (Refer to Appendix B.1 and u
B.2)
26 :Minimum BMP Footprint !Linc 24 x Line 25 x 0.03] 41
27 Footnrint of the BMP = MaximumfMinimumfT .ine 21. Line 23). Line 26) 41
Note: Line 7 is used lo estimate the amount of volume retained by the BMP. Update assumed surface area in Line 7
until its equivalent to the required biofiltration footprint (either Linc 21 or Linc 23)
cubic-feet
sq-ft
cubic-feet
sq-ft
sq-ft
sq-ft
sa-ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.2-1 DCV
85,h percentile 24-hr storm depth from I 1igllrC B.1 -1
2 Arca tributary to B,\fP (s)
3 Arca weighted runoff factor (estimate using Appendix B.1.1 and B.2.1)
4 Trees Credit Volume
5 Rain barrels Credit Volume
6 Calculate DCV = (3630 x C x d x A) -TCV -RCV
City of Carslbad Design Manual
Appendices
Effective Date: February 16, 2016 B-10
PER STORM WATER STANDARDS TABLE B 1-1
Total Tributary Arca
Roof
Ammcndcd, Mulched Soils or Landscape
Impervious Tnbutary Arca
Pcrvious Tributary Arca
February 2016
Calculate Wc=(Ca*)(Area lmp)+(Cb*)(Area Pcrv)/Total Arca
d= 0~8
A= O II
C= 09
TCV= 0
RCV= 0
DCV= 201
,\= ~·
Ca= -· ..
Cb = a~: ..
,\imp-~·
Aper= t .
We= 0.9000
inches
acres
unitlcss
cubic-feet
cubic-feet
cubic-feet
sq ft
uni Liess
un.itlcss
S<J ft
sq ft
S<J ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.S-1: Simple Sizing Method for Biofiltration BMPs
Partial Retention
2
3
4
5
6
7
9 Volume retained by BMP [[Line 4 + (Line 12 x Line 8))/12] x Line 7
10 DCV that requires biofiltration [Line 1 -Llne 9]
MPPuameten
11 Surface Pon · 6 inch minimum, 12 inch maximum
12 Media Thickness (18 inches minimum], also add mulch layer thickness to this line
for sizing calculations
13 Aggregate Storage above underdrain invert (12 inches typical) -use 0
inches for sizing if the aggregate is not over the entire bottom surface area
15 Media filtration rate to be used for sizing (5 in/hr. with no outlet control; if the filtration
rate is controlled by the outlet use the outlet controlled rate which will be less than 5
in/hr.)
Outlet Control Rate (Q) x 3600 S I (Line 7 x 12) --> Q
17
18 Depth of Detention Storage
11 + (Line 12 X Line 14) + (Line 13 X Line 5)]
19 Total.Depth Treated (Line 17 + Line 18)
0
24
0
0.40
0.1
26.l
174.9
6
30
14.4
44.4
N()(C:: Linc 1 uo used to estimate the amount of vo)unw retained by the BMP. Update assumed surface arc2 in Line 1 until
its cquwalcnt to the n,quircd bio6ltcuioo footprint (either Linc 21 or I.inc 23)
BMP"C"
feet
in/hr.
hours
inches
cubic-
feet
cubic-
feet
in/in
hours
inches
inches
inches
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
BMP"C" Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs (continued)
$im111c Sir.fog MciJfod for 'Blortl1r111ion·lJMP1o· DMA 4 *°'.l>MA 5 , ! • I '·Wo~heea·B!S.:t (Page~of2) · ·-·, ., .,. • '•· < f • • t • • • 1/ I .i i ,;· • •
Option 1-Biofilter 1.5 times the DCV -
20 Required biofiltered volume (1.5 x Line 10] 262.35
21 Required Footprint [Line 20/ Line 19] x 12 71
1\.1 ion 2 • Store 0.75 of remaining DCV in pores and ponding .
22 Required Storage (surface+ pores) Volume [0.75 x Line 10] 131.18
23 Required Footprint [Line 22/ Line 18] x 12 109.31
Footprint of the BMP -'
24 Area draining to the BMP GIi
25 Adjusted Runoff Factor for drainage area (Refer to Appendix B.1 and -,,.
B.2)
26 Minimum BMP Footprint [Line 24 x Line 25 x 0.031 125
27 Footurint of the BMP = Maximwnl'Minimumrr .ine 21. Line 23) Line 26) 125
Note: Line 7 is used to estimate the amount of volume retained by the BMP. Update assumed surface area m Lme 7
until its equivalent to the required biofiltration footprint (either Line 21 or Line 23)
cubic-feet
sq-ft
cubic-feet
sq-ft
sq-ft
sq-ft
SQ-ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.2-1 DCV
2 ,\rea tributary to B:\11' (s)
3 Arca weighted runoff factor (estimate using Appendix B.1.1 and H.2.1 )
4 Trees Credit Volume
5 Rain barrels Credit Volume
6 Calculate DCV = (3630 x C x d x ,\) -TCV -RCV
City of Carslbad Design Manual
Appendices
Effective Date: February 16, 2016 8-10
PER STORM WATER STANDARDS TABLE B 1-1
Total Tributary Arca
Roof
,\mmcndcd, Mulched Soils or Landsc:ipe
Impervious Tributary Arca
Pervious Tributary ,\rca
February 2016
Calculate Wc=(Ca*)(Area lmp)+(Cb*)(J\rca Pcrv)/Total Arca
,\=
C=
TCV=
RCV= 0
DCV= 49
A= ~l~l.
Ca= "'r -·
Cb= ~u-... -.
,\imp-·~~· Aper= IIC' ·-We= 0.9000
acres
unitless
cubic-feet
cubic-feet
cubic-feet
Slj ft
unit less
unitlcss
Slj ft
Slj ft
sq ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs
Remaining DCV after implementing retention B}.fPs
ial Retention
2 artial infiltration is feasible
3
4
5
7 Assumed surface area of the biofiltration BMP
8 Media retained
9 Volume retained by BMP [[Line 4 + (Line 12 x Line 8))/12) x Line 7
10 DCV that requires biofiltration [Line 1 -Line 9]
BMP Paameten
11 Surface Pond.in 6 inch minimum, 12 inch maximum
12 Media Tuckness (18 inches minimum], also add mulch layer thickness to this line
for sizing calculations
13 Aggregate Storage above underdrain invert (12 inches typical) -use 0
inches for sizing if the aggregate is not over the entire bottom surface area
14 Freel drained ore stora e
15 .Media filtration rate to be used for sizing (5 in/hr. with no outlet control; if the filtration
.rate is controlled by the outlet use the outlet controlled rate which will be less than 5
in/hr.)
Outlet Control Rate (Q) x 3600 SI (Line 7 x 12) ---> Q
16 Allowable Rou Tune for ..
17 Depth filtered during storm ( Line 15 x Line 16)
18 Depth of Detention Storage
p..ioc 11 + (Linc 12 X Line 14) + (Linc 13 X Line 5)}
19 Tot21 Depth Treated [Line 17 + Line 18)
0
24
0
0.40
0
174
0.1
26.1
22.9
6
30
14.4
44.4
Nott: Linc 7 is USttl to csrimate the amount of volume retained by 1hc BMP. llpd:11c assumed suc&cc area in line 7 until
its equivaknt to the required bio61tration footprint (either I .inc 21 oc I.inc 23)
BMP"D"
in/hr.
hours
inches
in/in
inches
s -ft
in/in
cubic-
feet
cubic-
feet
inches
inches
inches
in/in
hours
inches
inches
inches
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.S-1: Simple Sizing Method for Biofiltration BMPs (continued) BMP"D"
w~~lcJS~~i~~''M"~1~<lfC?f B~<?~~~tio~~l\fPs'D~16 _. .... ~ .•• ' . ·:., ';'.'"""Vo~11cetfi!S!t r(Page'!'of2r· '·~·,
, f ~ ~ , I • ' f .,, ' 1 I~ ' 1 .' \ "' 1 l '
Option t -Biofilter t.S times the DCV 'c
20 Required biofiltered volume [1.5 x Llne 1 OJ 34.35
21 Required Footprint [Llne 20/ Llne 19) x 12 9
[. 'i\..;~. on 2 -Store O. 75 of remaining DCV in porca and ponding -
22 Required Storage (surface+ pores) Volume [0.75 x Llne 10] 17.18
23 Required Footprint [Llne 22/ Line 18] x 12 14.31
PC>Otprim of the BMP
24 Area dtaininv to the BMP UD
25 Adjusted Runoff Factor for drainage area (Refer to Appendix B. 1 and u.
B.2)
26 Minimum BMP Footprint !Line 24 x Line 25 x 0.031 30
27 Footnrint of the BMP = Maximurn<Minimumn ,inc 21 Line 23). Llne 26) 30
Note: Line 7 is used to estimate the amount of volume retained by the BMP. Update assumed surface area in Line 7
until its equivalent to the required biofiltration footprint (either Line 21 or Line 23)
cubic-feet
sq-ft
cubic-feet
sq-ft
sq-ft
sq-ft
SQ-ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worbheet B.2-1 DCV
85,h percentile 24-hr storm depth from Figure B.1-1
2 Arca tributary to BMP (s)
3 Arca weighted runoff factor (estimate using Appendix B.1.1 and B.2.1)
4 Trees Credit \'olume
5 Rain barrels Credit Volume
6 Calculate DCV = (3630 x C x d x r\) -TCV -RCV
City of Carslbad Design Manual
Appendices
Effective Date: February 16, 2016 B-10
PER STORM WATER STANDARDS TABI EB 1-1 -
Total Tribut-iry r\n.'ll
Roof
Ammended, Mulched Soils or Landscape
Impervious Tributary ,\rca
Pcrvious Tributary Arca
February 2016
Calculate Wc=(Ca*)(Arca lmp)+(Cb*)(Arca Pcrv)/Total Arca
d= 0~11
r\= (1()4
C= 09
TCV= 0
RCV= 0
DCV= 68
:\= IMO ...
Ca= Ult'•
Cb= o.•· .
1\imp= 1.-,
Aper= rr .
We= 0.9000
inches
acres
unitless
cubic-feet
cubic-feet
cubic-feet
sq ft
unit less
unitlcss
sq ft
sq ft
sq ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs
Remaining DCV after implementing retention B:MPs
Partial Retention
2 artial infiltration is feasible
3
4
5
6 vel below the underdrain · e 4 / Line 5
7 Assumed surface area of the biofiltration BMP
9 Volume retained by BMP [(Line 4 + (Line 12 x Line 8)]/12] x Line 7
10 DCV that requires biofiltration [Line 1 -Line 9]
BMP Parameten
11 Surface Pon · 6 inch minimum, 12 inch maximum]
12 Media Thickness £18 inches minimum), also add mulch layer thickness to this line
for sizing calculations
13 Aggregate Storage above underdrain invert (12 inches typical) -use 0
inches for sizing if the aggregate is not over the entire bottom surface area
0
24
0
0.40
0
0.1
26.1
41.9
15 Media filtration rate to be used for sizing (5 in/hr. with no outlet control; if the filtration S.00
rate is controlled by the outlet use the outlet controlled rate which will be less than 5
in/hr.)
Outlet Control lute (Q) x 3600 S / (Line 7 x 12) --> Q
16 Allowable Rou Tune for sizin 6
17 Depth filtered during storm £ Line 15 x Line 16) 30
18 Depth of Detention Stoage 9.6
(Linc 11 + (Line 12 X Linc 14) + (line 13 X Linc 5))
19 Total Depth Treated [Line 17 + Line 18] 39.6
Note: Linc 7 is used to estimate the amount of volume retained by the BMP. Update assumed surf.ice :uca in Linc 7 until
its cqunralcor ro tbc n,quittd biofihr:arioo footprint (either Linc 21 or Line 23)
BMP"E"
in/hr.
hours
inches
in/in
inches
s -ft
in/in
cubic-
feet
cubic-
feet
inches
inches
hours
inches
inches
inches
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs (continued) BMP "E"
~TP.!~.-S~1~g~~!~f ~ ,r~-~-i~~l~tion'fiMP,11itl~'7 : '· ., • ~ ~. 1 • •ti r ... ~orkshcct1B.S~l (Pagc~2bf.2) .+ -.!,
, .. i ,~ :.• • • ( llj, ,. .. i °:4 f ' ' I
Option 1 -Biofalter 1.5 tim~ the DCV
20 Required biofiltered volume [1.5 x Line 10) 62.85
21 Required Footprint [Llne 20 / Line 19) x 12 19
Option 2 -Store 0.75 ohemaining DCV in porea and ponding
22 Required Storage (surface+ pores) Volume (0.75 x Line 10] 31.43
23 Required Footprint [Line 22/ Line 18) x 12 39.28
Footprint of lhe BMP
24 Area draining to the B}.fP LIii
25 Adjusted Runoff Factor for drainage area (Refer to Appendix B.1 and ~
B.2)
26 Minimum BMP Footprint II.inc 24 x Line 25 x 0.031 42
27 Footorint of the BM1) = Maximum<Minimumn .inc 21, Linc 23) Line 26) 42
Note: Line 7 is used to estimate the amount of volume retained by the BMP. Update assumed surface area in Line 7
until its equivalent to the required biofiltration footprint (either Line 21 or Line 23)
cubic-feet
sq-ft
cubic-feet
sq-ft
sq-ft
sq-ft
so-ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.2-1 DCV
85,h percentile 24-hr storm depth from J o'igurc B.1 -1
2 Arca tributary to BMP (s)
3 t\rea weighted runoff factor (estimate using Appendix B.1.1 and B.2.1)
4 Trees Credit \I olume
5 R:1m barrels Credit Volume
6 Calculate DCV = (3630 x C x d x A) -TC:V -RCV
Gty of Carslbad Design Manual
Appendices
Effective Date: February 16, 2016 B-10
PER STORM WATER ST AND ARDS TABLE B 1-1
Tot2l Tnbutary Arca
Roof
,\mmcnded, Mulched Soils or Landscape
Impervious Tributary Arca
Pcrvious Tabutary Arca
February 2016
Calculate Wc=(Ca*)(Arca Imp)+(Cb*)(Arca Pcrv)/Total Arca
d= 0~8
,\= 001i
C= 09
'J"CV= 0
RCV= 0
DCV= 103
,\= Ute
Ca= 11.111
Cb= ruo
A imp= ~·
.
Aper= 0
We= 0.9000
inches
acres
unitlcss
cubic-feet
cubic-feel
cubic-feet
sq ft
unitlcss
unitlcss
sq ft
Slj ft
sq ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
BMP"F" Worksheet B.5-1: Simple Si~ng Method for Biofilttation BMPs
~~ . ..;,,r.r1iTiTi•lil7., ••• ,,.-.. a,•.11e:1•P·'·•·•: 1'.\Jr ,T•!•~ITIT~1£. l .. "1!'1£a~r1 ~
·.1~·;,I' x '{·•u..-..{r.,. ·~:A, ~1.,,..,v,•-.."-~ -
1 Remaining DCV after implementing retention B:MPs 103
~
1111 Jal Retention
2 Infiltration rate from Worksheet D.5-1 if partial infiltration is feasible 0
3 Allowable drawdown time for al!2regate storage below the underdrain 24
4 Depth of runoff that can be infiltrated [Line 2 x Llne 31 0
5 Aem:ei;rate pore space 0.40
6 Required depth of gravel below the underdrain lline 4/ Llne 51 0
7 Asswned surface area of the biofiltration B:MP l'U
8 Media retained pore storaee 0.1
9 Volume retained by BMP [[Line 4 + (Line 12 x Llne 8)]/12] x Llne 7 26.1
10 D CV that requires biofiltration [Line 1 -Line 9] 76.9
BMP Patameters .
11 Surface Ponding [6 inch minimum, 12 inch maximuml ,· it' .
12 Media 'Thickness fl 8 inches minimum], also add mulch layer thickness to this line ,: ~-
for sizing calculations
13 Aggregate Storage above underdrain invert (12 inches typical) -use 0 r-,,~•.-..C
inches for sizing if the aggregate is not over the entire bottom surface area
'
14 Fredv drained pore storage
-:;;·
15 Media filtration rate to be used for sizing (5 in/hr. with no outlet control; if the filtration 5.00
rate is controlled by the outlet use the outlet controlled rate which will be less than 5
in/hr.)
Outlet Control Rate (Q) x 3600 S / (Line 7 x 12) ---> Q L._ ....... ,., .. ~~-· I .... ;a • a -• . ' ---~ •. -.. ll,,.; ~-.... " ., ,~ ·11·
16 Allowable Routing TllDe for sizuw 6
17 Depth filtered during storm [ line 15 x line 16] 30
18 Depth of Detention Stonge 14.4
[Line 11 + {Llnc 12 X Line 14) + (line 13 X Line 5))
19 Total Depth Treated [Line 17 + Line 18] 44.4
Note: Linc 7 IS u.'iCd to estimate the amount of volume rc121t1cd by the BMP. Update assumed surface arc:a tn Linc 7 until
its equivalent to the required biofiltratioo footprint (citbcr Line 21 or line 23)
cubic-
feet
in/hr.
hours
inches
in/in
inches
sq-ft
in/in
cubic-
feet
cubic-
feet
inches
inches
inches
in/in
·, .
hours
inches
inches
inches
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
BMP"F" Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs (continued)
Simplc1SiziiiltM.ctli~'aifor1Biofiltr."iti oi1mMPs'lDMA~8 --,.,1
• 1•· ...... ~ I~ 1 ~-~, .... works licci'1B~5~1 l(Pitgc.,.2 of:.2)~
tfff;.J~l]!.f"_ . !l'f'~~'·.'1 ,, .,, ' •, ' • ·:, .~ °: ,,' ",,,, 111 • ' , 'I , 1 'j. I
Option 1 -Biofilter 1.5 times the DCV -
20 Required biofiltered volume [1.5 x Llne 10] 115.35
21 Required Footprint [Linc 20/ Line 19] x 12 31
Option 2 -Stott 0.75 of remaining DCV in pores and ponding ..
22 Required Storage (surface+ pores) Volume [0.75 x Line 10] 57.68
23 Required Footprint [Line 22/ Line 18] x 12 48.06
~).-:t;q,rint of the BMP
24 Area drain.int?: to the BMP J.JII_
25 Adjusted Runoff Factor for drainage area (Refer to Appendix B.1 and ..,
B.2)
26 Minimum BMP Footprint !Line 24 x Line 25 x 0.03] 64
27 Footorint of the BMP = Maximumt'Minimum(Line 21 Line 23). Line 26) 64
Note: Line 7 is used to estimate the amount of volume retained by the BMP. Update assumed surface area in Line 7
until its equivalent to the required biofiltration footprint (either Line 21 or Line 23)
cubic-feet
sq-ft
cubic-feet
sq-ft
sq-ft
sq-ft
so-ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.2-1 DCV
85,i. percentile 24-hr stonn depth from rigure B.1-1
2 Arca tributary to Bl\n> (s)
3 Arca weighted runoff factor (estimate using Appendix B.1.1 and B.2.1)
4 Trees Cn:dit Volume
5 Rain barrels Credit Volume
6 Calculate DCV = (3630 x C x <l x A) -TCV -RCV
C.1ty of Can-lbad Design Manual
Appendices
Effective Date: February 16, 2016 B-10
PER STORM WATER STANDARDS TABLE B.1-1
Total Tributary Arca
Roof
Ammendcd, Mulched Soils or Landscape
Impervious Tributary :\rca
Pervious Tributary Arca
February 2016
Calculllte Wc=(Ca*)(1\rca lmp)+(Cb*)(Arca Perv)/Total Arca
d= 0 58
A= OfM
C= 09
TCV= 0
RC\/=
DCV= 68
A= ~
Ca= ..
Cb= llcff,
,\imp-JIJfJ!lf
Aper= ' We= 0.9000
inches
acres
unitlcss
cubic-feet
cubic-feet
cubic-feet
sq ft
unitless
unit less
sq ft
sq ft
sq ft
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs BMP"G"
.m:wi: .--.,. ... ·-~:41-t.\~iil'iTi mr11~ ,1r1HIU,1'HI ,., ;fl~·~· I ,,r,mn= , .. .,,., __ ..,,.~ ....
1 Remaining DCV after implementing retention BMPs 68 cubic-
feet
Panial Retention
2 Infiltration rate &om Worksheet D.5-1 if partial infiltration is feasible 0
3 Allowable drawdown time for aru?tegate storage below the uoderdrain 24
4 Depth of runoff that can be infiltrated [Line 2 x Line 3] 0
5 Al!ercgate pore space 0.40
6 Required depth of gravel below the underdnin [Linc 4/ Line SJ 0
7 Assumed surface area of the biofiltration Bl\fP 174
8 Media retained pore storage 0.1
9 Volume retained by BMP [JI.inc 4 + (Line 12 x Linc 8))/12) x Line 7 26.1
10 DCV that requires biofiltration [Llne 1 -Line 9] 41.9
BMP Parameten
11 Surface Pondim? f6 inch minimum, 12 inch maximum] o' .z-C
12 Media Thickness [18 inches minimum], also add mulch layer thickness to this line ~
for sizing calculations
13 Aggregate Storage above underdrain invert (12 inches typical) -use 0 ·• inches for sizing if the aggregate is not over the entire bottom surface area .. :.
14 Freely drained pore storage I' T
.'
15 Media filtration rate to be used for sizing (5 in/hr. with no outlet control; if the filtration S.00
rate is controlled by the outlet use the outlet controlled rate which will be less than 5
in/hr.)
Outlet Control Rate (Q) x 3600 S I (Line 7 x 12) ---> Q l '.1 --.I, e. ·,•.~•. ....: 1 .. -. . ~ -' · • '• • · • •,11• • <f.i]! I ..... , ... ~. " •
16 Allowable Routing Ttm.e for sizing 6
17 Depth filtered during storm [ Line 15 x Line 16] 30
18 Depth of Detention Storage 9.6
[Line 11 + (Line 12 x Li.ne 14) + (Line 13 x Li.ne 5)]
19 Tot21 Depth Treated [Line 17 + Line 18] 39.6
Noce: Line 7 is used to estimate the amount of vnlurrw: retuned by the BMP. Update :assumed surface area in Line 7 until
its equivalent to the required bio6ltr.uion footpriot (either Linc 21 DI' J.mc 23)
in/hr.
hours
inches
in/in
inches
sq-ft
in/in
cubic-
feet
cubic-
feet
inches
inches
inches
in/in
...
hours
inches
inches
inches
Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods
Worksheet B.5-1: Simple Sizing Method for Biofiltration BMPs (continued) BMP"G"
1Simple1$ibngMclholl W"orllioliltration'IJMPsl)MA '9 ~ .. .. ·~·-. .. 1 · .. -•':"70-ibhcct1JJS-'1~agc·2or.2r R·. ·, . . • .. - . . . - . . • . .
.. ,·, '. ' .. .,..,I •
Option 1 -Biofihcr 1.5 timl!s the DCV
20 Required biofi.ltcrcd volume [1.5 x Line 1 OJ 62.85
21 Required Footprint [Line 20/ Line 19) x 12 19
Option 2 -Store O. 75 of remaining DCV in porea and ponding
22 Required Storage (surface+ pores) Volume [0.75 x Linc 10) 31.43
23 Required Footprint [Line 22/ Line 18) x 12 39.28
Footprint of' the BMP
24 Area drainin~ to the BMP Ult
25 Adjusted Runoff Factor for drainage area (Refer to Appendix B.1 and u
B.2)
26 Minimum BMP Footprint JLine 24 x Line 25 x 0.03] 42
27 Footorint of the BMP = MaximumfMinimum<Llne 21 Line 23), Line 26) 42
Note: Line 7 is used to estimate the amount of volume retained by the BMP. Update assumed surface a.rea in Linc 7
until its equivalent to the required biofiltration footprint (either Line 21 or Line 23)
cubic-feet
sq-ft
cubic-feet
sq-ft
sq-ft
sq-ft
so-ft
:,
ATTACHMENT 2
BACKUP FOR PDP HYDROMODIFICATION CONTROL MEASURES
[This is the cover sheet for Attachment 2.]
Indicate which Items are Included behind this cover sheet:
Attachment Contents Checklist
Sequence
Attachment 2a Hydromodification Management ¥Included
Exhibit (Required)
See Hydromodification Management
Exhibit Checklist on the back of this
Attachment cover sheet.
Attachment 2b Management of Critical Coarse .f, Exhibit showing project drainage
Sediment Yield Areas (WMAA Exhibit boundaries marked on WMAA
is required, additional analyses are Critical Coarse Sediment Yield
optional) Area Map (Required)
See Section 6.2 of the BMP Design Optional analyses for Critical Coarse
Manual. Sediment Yield Area Determination
D 6.2.1 Verification of Geomorphic
Landscape Units Onsite
11 6.2.2 Downstream Systems
Sensitivity to Coarse Sediment
D 6.2.3 Optional Additional Analysis
of Potential Critical Coarse
Sediment Yield Areas Onsite
Attachment 2c Geomorphic Assessment of Receiving o Not performed
Channels (Optional) D Included
See Section 6.3.4 of the BMP Design
Manual.
Attachment 2d Flow Control Facility Design and o Included
Structural BMP Drawdown
Calculations (Required)
See Chapter 6 and Appendix G of the
BMP Desian Manual
Use this checklist to ensure the required information has been included on the
Hydromodification Management Exhibit:
The Hydromodification Management Exhibit must identify:
lJ Underlying hydrologic soil group
o Approximate depth to groundwater
o Existing natural hydrologic features ( watercourses, seeps, springs, wetlands)
LJ Critical coarse sediment yield areas to be protected (if present)
[I Existing topography
LJ Existing and proposed site drainage network and connections to drainage offsile
o Proposed grading
[J Proposed impervious features
D Proposed design features and surface treatments used to minimize imperviousness
D Point(s) of Compliance (POC) for Hydromodification Management
u Existing and proposed drainage boundary and drainage area to each POC (when necessary,
create separate exhibits for pre-development and post-project conditions)
u Structural BMPs for hydromodificalion management (identify location, type of BMP, and
size/detail)
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:
LI 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:
¢ 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)
LI How to access the structural BMP(s) to inspect and perform maintenance
,I 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)
D 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.) .p 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
IZ] Owner shall make access to all onsite bmps available to City staff during City
business hours for inspection and if necessary, maintenance and/or repair when
property owner fails to maintain in accordance with bmp maintenance agreement
with the City.
ATTACHMENT 4
City standard Single Sheet BMP (SSBMP) Exhibit
[Use the City's standard Single Sheet BMP Plan.]
E.1
Appendix E: BMP Design Fact Sheets
Source Control BMP Requirements
Worksheet E.1~1: Source Control BMP Requirements
\ppJu ,1hilur sJrnll In: tk11·unml'll 1hro11~·h cnuhukralinn nf 1hr 1kYdnnnwn1 rrrntTt's karnrrs ;uul 1n1uap:ut·d pullo,;tn1 i>oun:l·~ ,\ppnliln, I' I prn,·uk.: 1•uidanq·
fur 1duu1fyfny :<ourc,· cuntro\ B~lP'-apphrahk 111 a pnug;J ·1111.-( ·,rr',. ~undard Pa,wn Kc~mrt·mrnt,; ''lwckh-:1 F·.36 shall hlr; 11.:rJ lo ducuro11JI cnmp\iaot\· with
source control Bi'.1P tc:SJ\UC<:UJcots
How to use this worksheet:
1. Review Column 1 and identify which of these potential sources of storm water pollutants apply to your site. Check each box that applies.
2. Review Column 2 and incorporate all of the corresponding applicable HMPs in your project site plan.
3. Hc,,i1.:w I :olunu1s 3 and 4 and innJrp11t,1h· all of the corresponding applicable permanent controls and operational HMPs in a table in your projcct-
spccilii: stunn ,vatl'r nrnna~t·nH·nt rl·port. 1 )l'sl·ribe your specific RMPs in an accompanying narrative, and explain any special conditions or situations that
rt·4uin:J l»ntirrlng H~·fPs tir suh~tinnin~ a\1<:rnativcs.
E-2 February 2016
Appendix E: BMP Design Fact Sheets
lfTht·st· Sourn:s \\'ill lk
on the l'ro1cc1 Si te . . . ·1·1 ,. J> · s·1 11 (' ·., ·11 s (' 1 lll\1J> .• . 1l'II our rOJl'(.'l ~ 1a .. on~1ucr IC!'<!C .. ourcc ... ontru ~
1
Potential Sources of
Runoff Pollutants
f A. Onsitc stonn drain
inlets
D Not Applicable
2
Permanent Controls-Show on
Drawings
~ Locations of inlets.
3
Permanent Controls-List in Table
and Narrative
f Mark aU inlets with the words "No
Dumping! Flows to Bay" or similar.
E-3
4
Operational BMPs-Include in
Table and Narrative
Maintain and periodicalJy repaint
or replace inlet markings.
Provide storm water pollution
prevention information to new
site owners, lessees, or operators.
~ Sec applicable operational BMJ>s
in Fact Sheet SC-44, "Drainage
System Maintenance," in the
CASQA Stormwatcr Quality
Handbooks at
www.cabmphandbooks.com .
.i Include the following in k-asc
agreements: "Tenant shall not
allow anyone to discharge
anything to storm drains or to
store or deposit ou.tcrials so as to
create a potential discharge to
storm drains."
February 1D16
Appendix E: BMP Design Fact Sheets
If These Source~ Will fie
on 1hc Projccl Sill' ... ..• Then Your Project ,hall { onsidcr ·1 hcsc S11un:c Conlrol Bl\11',
I
I
1 2 3 4
Potential Sources of Permanent Controls-Show on Permanent Controls-List in Table Operational BMPs-Include in
Runoff Pollutants Drawings and Narrative Table and Narrative
~ B. Interior floor drains Cf' State that interior floor drains and ~ Inspect and maintain drains to
and elevator shaft elevator shaft sump pumps will be prevent blockages and overflow.
sump pumps plumbed to sanitary sewer.
0 Not Aor,lic:11ble
./J C. Interior parking 'I State that parking garage floor ~ Inspect and maintain drains to
ganges drains will be plumbed to the prevent blockages and overflow.
[J Nol Applicibk: sanitary sewer or an approved BMP
~ D1. Need for future ~ Note building design fo·atures that v Provide Integrated Pest
indoor & structural discourage entry of pests. Management infonnation to
pest control owners, lessees, and operator,;;.
[J Nol Annlicablc
February 2016
Appendix E: BMP Design Fact Sheets
If Thl'SC Sources Will Be
on the Projcu Site · · · ... Thn1 Your Projcu sh.,11 consider Thl·M: Source Control Hl\1J>,
1
Potential Sources of
Runoff Pollutants
~ D2. LandSC1pc/
O utdoor Pesticide
Use
D Not Applioblc
2
Permanent Controls-Show on
Drawings
0
0
Show locations of existing
trees or areas of sh1Ubs and
ground cover to be
undisturbed and retained.
Show self-retaining landscape
areas, if any.
Show storm w:iter treatment
facilities.
3
Permanent Controls-List in Table
and Narrative
State that final landscape plans will
accomplish all of the following.
0 Preserve existing drought tolerant trees,
shrubs, and ground cover to the
maximum extent possible.
.(J Design landscaping to mtnlffilZc
irrigation and runoff, to promote
surface in@tcation where appropriate,
and to minimi.7.c the use of fertilizers
and pesticides that can contribute to
storm water pollution.
0 Where landscaped areas are used to
retain or detain storm watt..-r, specify
plants that arc tolerant of periodic
saturated soil conditions.
¢ Consider using pest-resistant plants,
especially adjacent to hardsc:tpc.
0 To ensure successful establishment,
select plants appropmtc to site soils,
slopes, climate, sun, wind, rain, land
use, air movement, ecological
consistency, and plant interactions.
E-5
4
Operational BMPs-Include in
Table and Narrative
'{ Maintain landscaping using
minimum or no pesticides.
'{ Sec applicable operational
BMPs m Fact Sheet SC-41,
"Ruilding and Grounds
Maintenance," in the C:\SQ.-\
Stormwater Quality I Jandbooks
at www.cabmphandbooks.com.
r/ Provide 1PM information to
new owners, lessees and
operators.
'
Fcbruaiy 2016
Appendix E: BMP Design Fact Sheets
If These Sources W'ill llc I
on the Pro1·cct Site . . 1·1 ,. J> • I II "d ·1·1 s (' l l'l\11' '. · ••• 1cn our r<lJCCI s 1.1 cons1 er ll'sc ourn· ,ontro , s I
1
Potential Sources of
Runoff Pollutants
CJ E. Pools, spas, ponds,
decorative fountains,
and other water
features.
~ Not Appliaiblc
CJ F. Food service
~ Not Applie1bk
CJ
2
Permanent Controls-Show on
Drawings
Show location of water feature
and a sanituy sewer clcanout in
an accessible area within 10 feet.
3
Permanent Controls-List in Table
and Narrative
CJ Pool backwash to be plumbed to the
sanitary sewer. Place a note on the
plans and state in the narrative that
this connection will be made
according to city requirements.
Cl ror rcstrnrants, grocery stores, CJ Describe the location and features of
the designated cleaning area. and other food service
operations, show location Cl
(mdoors or in a covt.-rcd area
outdoon.) of a floor sink or other
area for cleaning floor mats,
containers, and equipment.
CJ On the drawing, show a note that
th.is drain will be connecred to ;
grease intcn:cptor before
discharging to the sanitary sewer.
Dt.-scribc the items to be cleaned in
this facility and how it has been sizt.-d
to ensure that the largest items can be
accommodatc.-d.
E-6
4
Operational BMPs-Includc
in
Table and Narrative
[J Sec applicable operational
BMJ>s in Fact Sheet SC-72,
"Fountain and Pool
Maintenance," in the C\SQA
Stormwatcr Quality
Handbooks at
www.cabmphandbooks.com.
February 2016
Append.ix E: BMP Design Fact Sheets
If These Sunr<:l'S \\"ill Hl· I
011 the l'roJ· cct Si le . . .. · · · · • , 1 · .•. I hen 'I our Pmicct ,h.,11 consider 1 hcsc Source Control Bl\lPs I
l
Potential Sources of
Runoff Pollutants
.(J G. Refuse areas
a Not Appk2blc
2
Permanent Controls-Show on
Drawings
II Show where site refuse and
recycled materials will be
handled and stored for pickup.
.fJ l f dumpsters or other receptacles
arc outdoors, show how the
designate,-d area will be covered,
graded, and inved to prevent
run-on and show locations of
berms to prevent runoff from
the area. r\lso show how the
designat<--d area will be protected
from wind dispersal.
.fJ r\ny drains from dumpsters,
compactors, and t1llow bin areas
shall be di.o;chargcd to an
approved BMJ>.
.(J Refer to City Stindard Drawing
GS-16 for deti.ils.
3
Permanent Controls-List in Table
and Narrative
./J State how site refuse will be
handled and provide supporting
detail to what is shown on plans.
.fJ State that signs will be posted on
or near dumpsters with the words
"Do not dump hazardous
materials here" or similar.
E-7
4
Operational BMPs-Include in
Table and Narrative
I/ State how the following will be
implemented:
Provide adequate number of
receptacles. 1 nspect receptacles
regularly; repair or replace leaky
receptacles. Keep receptacles
covered. Prohibit/prevent
dumping of liquid or ha7.ardous
wastes. Post "no hazardous
materials" signs. 1 nspcct and pick
up litter daily and clean up spills
immediately. Keep spill control
materials available on-site. Sec
Fact Sheet SC-34, "Waste
Handling :md Disposal" in the
CASQr\ Stonnwater Quality
1 landbooks at
www.cabmphandbooks.com.
Februaiy 2016
Appendix E: BMP Design Fact Sheets
If These Sources Will Be 1
I I~ . ·s· •.. Then Your Project shall consider These Source Control Bl\lPs , on I 1c ro1cc1 lie . . . j
1
Potential Sources of
Runoff Pollutants
0 H. Industrial
processes.
.jf Not Applic,iblc
0 I. O utdoor storage of
equipment or
materi:lls. (Sec rows J
and K for source
control measures for
vehicle cleaning,
repair, and
maintenance.)
.(J Not Applioblc
2
Permanent Controls-Show on
Drawings
Q
0
0
a
Show process area.
Show any outdoor storage
areas, including how materials
will be covered. Show how
areas will be graded and
bcrmcd to prevent run-on or
runoff from an.-:i and protected
from wind dispersal.
Storage of non-hazardous
liquids shall be covered by a
roof and/ or drain to the
sanitary sewer system, and be
conttincd by berms, dikes,
liners, or vaults.
Storage of haz.ardous materials
and wastes must be in
compliance with the city's
hazardous materials ordinance
and a Hazardous Materials
Manapicot Plan for the site.
3
Permanent Controls-List in Table and
Narrative
0
0
If industrial processes arc to be located
onsitc, state: ",-\U process activities to be
performed indoors. No processes to
draio to exterior or to storm drain
~ystein.n
Include a detailed description of
materials to be stored, storage areas, and
structural features to prevent pollutants
from entering storm drains.
Where appropriate, reference
documentation of compliance with the
requirements of local Hazardous
Materials Programs for:
• Hazardous Waste Generation
• I lazardous Materials Release
Re:,ponsc and Inventory
• C..alifornia .\ccidental Release
Prevention Program
• Aboveground Storage Tank
• Uniform Fire Code Article 80
Section 103(b) & {c) 1991
• Underground Storage Tank
E-8
4
Operational BMPs-Include
in Table and Narrative
Table and Narrative
0 Sec Fact Sheet SC-10, "Non-
Stormwater Discharics" in the
CASQA Stormwatcr Quality
Handbooks at
www.cabmphandbooks.com.
0 Sec the Fact Sheets SC-31,
"Outdoor Liquid Container
Storage" and SC-33, "Outdoor
Storage of Raw Materials" in
the CASQA Stormwatcr
Quality I Jandbooks at
www.cabmphandbooks.com.
February 1.016
Appendix E: BMP Design Face Shee1s
Jf Thc,c '-ourccs Will Be ·
ti. I~ · S ... Then Your Prnjccl shall consickr Thcsl· Source Control BJ\f Ps :
Oil lC fOJCCI lie . . . I
1
Potential Sources of
Runoff Pollutants
0 J. Vehicle and
Equipment Cleaning
./ Not Applicable
2
Permanent Controls-Show on Drawings
0 Show on drawings as appropriate:
(1) Commercial/industrial facilities having
vehicle / equipment cleaning needs shall either
provide a covered, bcrmed area for washing
activities or discounge vehicle/ equipment
washing by removing hose bibs and installing
signs prohibiting such uses.
(2) Commercial car wash facilities shall be
designed such that no runoff from the facility
1s disch:u:ged to the storm drain system.
Wastewater from the facility shall discharge to
the sanitary sewer, or a wastewater reclamation
system shall be installed.
E-9
3
Permanent Controls-List in
Table and Narrative
CJ If a car wash area is not
provided, describe measures
lllken to discourage unsite
car washing and explain how
these will be enforced.
4
Operational BMPs-Include in
Table and Narrative
Describe operational measures to
implement the following (if
applicable):
0 Washwater from vehicle and
equipment washing operations
shall not be discharged to the
storm drain system.
CJ Car dealerships and similar
may rinse cars with water only.
CJ See Fact Sheet SC-21 , "Vehicle
and Equipment Cleaning," in
the CASQA Stormwater
Quality Handbooks at
www.cabmphandbooks.com
February 2016
Appendix E: BMP Design Fact Sheets
If These Sources Will Be 1. . 1, . 1 "d 'fl , (' 1 J>l\tP
h I> • s· ... hen "\ our ro1cc1 shal c1111s1 er 11:sc Source .ontro > s ,, on I C ro1ect He . . . ,
1
Potential Sources of
Runoff Pollutants
D K.
V chicle/ Equipment
Repair and
Maintenance
r/ Nor Applicable
D
D
D
2
Pem1anent Controls-Show on
Drawings
Accommodate all vehicle
equipment repair and
maintenance indoors or designate
an outdoor work area and design
the area to protect from rainfall,
run-on runoff, and wind dispersal.
Show secondary containment for
exterior work areas where motor
oil, brake fluid, gasoline, diesel
fuel, radiator fluid, acid-
containing batteries or other
haiardous materials or ha7.ardous
wastes arc used or stored. Drains
shall not be installed within the
secondary containment areas.
. \dd a note on the plans that states
either (1) there arc no floor drains,
or (2) floor drains are connected
to wastcwarer pretreatment
systems prior to di,;charge to the
sanitary sewer and an industtial
waste discharge pcnnit will be
obtained.
3
Permanent Controls-List in
Table and Narrative
D State that no vehicle repair or
maintenance will be done
outdoon;, or else describe the
re<Juired features of the
outdoor work area.
D State that there arc no floor
drains or if there arc floor
Jrains, note the city from
which an industrial waste
discharge permit will be
obtained and that the design
meets city's requirements.
[J State that there arc no tanks,
containers or sinks to be used
for parts cleaning or rinsing
or, if there arc, note the city
from which an industrial
waste discharge permit will be
obtained and that the design
meets city's requirements.
E-10
4
Operational BMPs-Include in
Table and Narrative
In the report, note that all of the following
restrictions apply to use the site:
Cl No person shall dispose of, nor permit
the disposal, directly or indirectly of
vehicle fluids, ha;,;ardous materials, or
rinsewater from parts cleaning into
storm drains.
D No vehicle fluid removal shall be
performed outside a building, nor on
asphalt or ground surfaces, whether
inside or outside a building, except in
such a manner as to ensure that any
spilled fluid will be m an an.'3 of
secondary containment. Leaking
vehicle fluids shall be contained or
drained from the vehicle irnm<.-diatcly.
D No person shall leave unattended drip
parts or other open containen;
conuining vehicle fluid, unless such
containers are in use or in an area of
secondary containment.
February 2016
Appendix E: BMP Design Fact Sheets
'If These S01m:es \X'ill He . on lhc Projccl Sile . . . , .. Then Your Projccl ~hall cons1tkr Thcsl' Source Cor11rol Hl\tl's
1
Potential Sources of
Runoff Pollutants
0 L Fuel Di~-pL"flsing
:\rL'2S
t/ Nol Applic~blc
2
Permanent Controls-Show on
Drawings
D foueling arcas1 shall have
impermeable floors (i.e., portland
cement concrete or equivalent
smooth impervious surface) that
arc (1) graded at the minimum
slope nccc.ssary to prevent
ponding; and (2) separated from
the rest of the site by a grade break
that prevL-nts run-on of storm
water to the MEP.
D Fueling areas shall be covered by a
canopy that extends a minimum of
ten feet in each direction from each
pump. !Alternative: The fueling
area must be covered and the
cover's minimum dimensions must
be equal to or greater than the area
within the grade bri.'2k or fuel
di~n.~ing arca1.J The canopy lor
covecJ shall not dnin onto the
fueling area.
3
Permanent Controls-List in
Table and Narrative
4
Operational BMPs-Include in
Table and Narrative
D The property owner shall dry sweep
the fuc:ling area routinely.
0 See the Business Guide Sheet,
"A Ulomotive Service~<;crvicc
Stations" in the C.\SQA Stormwatcr
Quality Handbooks at
www.cabmphandbooks.com.
I. The fueling an:a shall be defined as the area extending a minimum of 6.5 feet from the comer of each fuel dispt."flSl.'£ or the length at which the hose
and nozzle assembly may be operated plus a minimum of one foot, whichever is grearer.
E-11 Fcbrua,y 2016
Appendix E: BMP Design Fact Sheets
JfThcsc Sources \X'ill He , . ,. p . . ·r . C I l'l\f p
I l• . s· ... 1 hen 1 our ro1cc1 shall consider hcsc Source ontro , s • on I lC rOJCCI lie ...
1
Potential Sources of
Runoff Pollutants
M. Loading Docks
'+/ Nol Applicable
2
Permanent Controls-Show on
Drawings
Cl Show a preliminary design for the
loading dock area, including
roofing and drainage. Loading
docks shall be covered and/ or
graded to minimize run-on to and
runoff from the loading area. Roof
downspouts shall be positioned to
direct storm water away from the
loading area. Water from loading
dock areas should be dnincd to an
approved BMP. Direct
connections to storm drains from
depressed loading docks arc
prohibited.
[J Loading dock shall be equipped
with a spill control valve or
equivalent device, which shall be
kept closed during periods of
opcr.ition.
[J Provide a roof overhang over the
loading area or install door skirts
(cowling) at each bay that enclose
the end of the trailer.
3
Permanent Controls-List in
Table and Narrative
E-12
4
Operational BMPs-lnclude in
Table and Narrative
Cl Move loaded and unloaded items
indoors as soon as possible.
a Sec f.act Sheet SC-30, "Outdnor
Loading :ind Unloading," 111 the
CASQA Storrnwatcr Quality
Handbooks at
www.cabmphandbooks.com.
Febi:uary 2016
Appendix E: BMP Design Fact Sheets
lfThe~c Sources Will Be . . . . . . , ,
I I> • s· •.. I hen) our Pro1ec1 shall cons1dl'r 1 hl'se Smucc Control Hl\11'~ , on I IC ro1ect • Jtc . . . I
1
Potential Sources of
Runoff Pollutants
~ N. Fire Sprinkler
Test Water
CJ Not Applicable
0. Miscellaneous Drain or
Wash Water
ff Boiler drain lines
~ Condensate drain
lin~
./J Rooftop
equipment
Cl Drainage sumps
~ Roofing. gutters,
and trim
0 Not Applicable
2
Permanent Controls-
Show on Drawings
3
Permanent Controls-List in Table and
Narrative
fl Provide a means to drain fire sprinkler test water
to the sanitary sewer or approved HMP.
~ Roi.fer drain lines shall be directly or indirectly
connected to the sanitary sewer system and may
not discharge to the storm drain system.
~ Condensate drain lines may discharge to
landscaped areas if the flow is small enough that
runoff will not occur. Condensate drain lines may
not discharge to the storm drain system.
ff Rooftop mounted cciuipment with potential to
produce pollutants shall be roofed and/or have
secondary containment.
D Any drainage sumps on.«itc shall feature a
sediment sump to reduce the quantity of sediment
in pumped water .
. -\ void roofing, gutters, and trim made of copper
or other unprotected metals that may leach into
runoff.
E-13
4
Operational BMPs-lnclude in
Table and Narrative
V Sec the note in Fact Sheet SC-
41, "Building nnd Grounds
l\faintenancc," in the CASQA
Stormwatcr Quality
Handbooks at
www.cabmphandbooks.com.
•
February 2016
Appendix E: BMP Design Fact Sheets
If These Sources \'fill Be . . , . . , . 1
I I> -s· ... I hen \ our Pm1ect shall consider These Source Control DMl's on I IC rOJCC( IIC ..•
1
Potential Sources of
Runoff Pollutants
D P. Plazas, sidewalks,
and parking lots.
r/ Nor Appliable
2
Permanent Controls-Show on
Drawings
3
Permanent Controls-List in
Table and Narrative
E-14
4
Operational BMPs-Include in
Table and Narrative
D Plazas, sidewalks, and parking lots shall
be swept regularly to prevent the
accumulation of litter and debris.
Debris from pressure washing shall be
collected to prevent entry into the storm
drain system. Washwater containing any
cleaning agent or degreaser shall be
collected and discharged to the sanitary
sewer and not discharged to a storm
dnin.
February 1.016
ATTACHMENT 4
City standard Single Sheet BMP (SSBMP) Exhibit
[Use the City's standard Single Sheet BMP Plan.]
I
OMA 1 •2•3•8 r. o~::
1-w w c::: I-(/)
w ~ (/)
\!l
~
~. b ~ I" ~ ~ OMA DISTRIBUTION
OAK AVE STATE ST
OMA• !Mi(! Sf BMP "C" 2CO Sf
OMA5 l755Sf BMP"C'·200Sf
OMA6·111SSf BNPV.iZSF
TOTAL: t::552 SF
OMA.1 15a05; 81.F'A• 2<6 SF
Ot,1A2 1caos.= BMP·A· 2"E Sf OAK AVENUE
OM"3 1!12S1= BMP'11" 59SF ROOF PLAN
CW.A7 1!6CSF SUPT ~2SF
OW.AS ZJ60SF !:IMP"F" 106SF
OIi.Aii 1~1CSF BMP'G" .47SF
TOTAL 9662 SF
ST ANOARD PROJECT REQUIREMENT CHECKLIST
SOURCE COIHROl
SC-1 PRE'F-, ~ OF' wat flSO,tAACES
SC-:? ST<PM ~AIN STrNC.JNC OR SIGHAG£
SC-5 PROTECi Tfi'ASH SJOR.IJ',E ~ ~ ,u ... rAL.L. R\.NCN-0'!. R\JkOff, ANO llll'f> CISPE!tSJ.t
APPLIED
Y£S
ITT
Y£S
0
sc-6 Mnn:~Sl~i;ON CR~ N.£1:» I '1tS I
~ K&S ENGINEERING, INC.
Plarrw,g . Engneemg . Su-vey,ng
~
IBOI M"m C<nler Co.wt. S.,te liXJ Sm ~ CA 911~
(619) 1)6-5565 ,,~ (619) 1l6-5564
INT:RK>,'. F\.JOR OR.tJ.'IS AA) £..::.-Vo\~ SH"-!"J" :il.1,1> ~.A/:115 'ftS
N~ ?-.RKNG CAA.t:X:S YrS
f\CED -~ rJ'rl.llf N!XXlQ t STRJ,'.;:JUV... Pi::iT '.n,rRO. j ~
OC'(:flf'N".JlSE ,rs
Rr-1..SE ARt:AS "" R!E__~_R)\(i.E~ ITT lo!JS~...A'IECl.S .'.HAii ~ IAlH W.t..T::.~ ytS
MAINTENANCE NOTE:
OIIIN._R 'S>!AU.. MME AC:CSS TO "'1..1. OH51lt 8MPS AVM.Aa...£ fO OTY SIY"f {)lW"':; QTY !llSMSS ~FtS ~ tGPECfON A'liD Jf N(C[SSA.;rY, t,1A11ft:'4.\NC£
AKJ/r:M. REP-"..~ ~ PffOPOTY OttiNER FAILS TO IIWHTAIH l,,. ACCM!),t,>Q: Wl'l-1 BvP M.-J~!UWrta: A~~I 'lllllrH THE OTY
~
~~.!'·e·
>-w
....J ....J <(
..
?.::
tu -, I ~~::,R
I (/) , ---.
1
~ re,_. ::-
r
<( ~ uJ.··
I-.
Cl)
J
11-
;t
_J
Cl
<( I
Cl
t L I . . . -,_.-.:.;_.l'"'' . -~ . :r ··-: }.:-_,, ·'. ··,":---., ,-. -·._. . = -~,-. :.
,,.
LEGEND
LIEM S1l!aQI.
C~A TO STATE S~£ET I . =1
C\IA TC O>J< A\'S'lll( 1.-_: -_-_---1
BMP TABLE
SMPIOI !!MP TYPE S"'90\. ~ QTY O~~ SJ-EET INSPECTION
NO~SI FREOUENCY
TREATMENT CONTROL
@-@Fl~~~-lc-32 1 -41S-1S\'I 1 ASNEEOEO
SOURCE CONTROL
0 TIUSH 1ml 50-32 ENCLOSURE ' 47S-1SW \ ASNEED€0
SITE o:SK;N so-·o [TI l.>NDSCAPE
EFFIOENT 1 .. ,a.,sw ASNEE.DEO
IAAJGAOO, so-·,
SWQMPNO~-~~~A~~-
MAINTENANCE AGREE.ME.NT DOCUMENT: YES~ NO_
RECOROATlON \O _____ _
MM-ITENANCE FREOI.FJ.CY
2 TI\:ES A YEAR
ASNEEDEO
M>!EEOEO
OAK AVENUE w ~~---_
PARTY RESPONSIBLE FOR MAINTENANCE.
CONTACT· MATTIEVIGCROON
SOURCE CONTROL
NAAI{_ STATE Am>OAi<-cARLS8AO U.C
;100RE$S: ~ 100 SECOND STREET
ENCINITAS. CA 9202-i
0 IC 20 40 60 '..wl.-I I
CRIIPH C SCALE; ,~ = 20'
IF PLAN SIZE IS LESS THAN 2•"x36', THIS IS A
REDUCED COPY. SCALE PLAN ACCORDINGLY.
.,..
7T
OQllt,ISPOIJf
10" ::;RA~O. {l/8-0 S/S0
) ~ 0 ~ I ,UHO
~WATERlAL -·-PE~~Af(C PFt rllJ
ro ~~ lt\(;Mt .. -:..irr-"l.L :,i~111x ·~~~ = ~~S-~ GRA"'2./5.~StJ3-~
~QJfl:ED 11.0CX JR ~:<tirN;:;
SOil
DETAIL STREET FLOW THROUGH PLANTER BMP "F & G"
NOT TO SCAJ.E
O'J~AU P1P:: ::oMri£CT ro mur
oo-.SPWJ
il..E..WCUT ¥1104 UITRllQH CAP ABO',! P<:»OhC DEPTii
.\ 'b~j~-···,-
<)=I 7 l •. \7 .: --~ ~--·-
12.• Q(Afil (J/8" 10 !:,/8°) ~ 0
APPRO\'CD lrlATERlAL.
DETAIL ONSITE FLOW THROUGH PLANTER
NOT TO '.iCAlL
?HQt.ENO~
Pl/IN PREPARED BY:
NA.\E HOSSE_. ZOMO~OOI
COMPANY K&S ENGlrrl:£RJNG
AOORESS 1901 \ISSIONCE.'fTERCT.
SUfTE 100
SAN -OEGC. CA 921t6
~ENO.~ C£RTIFICATION~
SMPNOTES:
1. TIESE SJJPSARE MANDATORY TOBE l'iSTM.LED PER MAN.>FIC.TURER'S
REOOMMENO°'llONS OR THESE PLNIS.
2.. NO CHA.'«?.ES TO THE ?ROPOSED BMPS OH 1'HIS Sr!EET 1MlltOVT PRIOR
~Al. FROM Tl£ CfTY ENGlhEER.
l. NO SUBSTTTUT10NS TO TlE. MATERIM. M TYPES OR Pl.ANTING TYPES
W'ITHOU T PRIOR APPROVAL FROM 1l£ CflY E.NGfNEER.
4. NOOCC'UPMC't' Y\:'U BE GflAl'lrEOl.'NTL 1'HE CITY INSPECiX)N STIFf
HAS WS?ECTEO THISPRO.ECTFOA APPROPRIATE B'APCO,..STRUC'llON
NiOt.STN.uTION.
.S. REFER "'O WAINTEHAHCE AGREEMENT OOC\MENT
E. SEE PRO.A;CT SW\ffl FOR ADOHJCHAL N"ORMAOON.
Attachment 4
CITY OF CARLSBAD ENGINEERING DEPARTMENT I ~E~TS I
l------,-------------~--+-----+-~-t----l!~NGlESHEET8MPEXHl~TFOR
STATE MIXED USE 30
REVISION DESCRIPTION
I I a\ I I I I I 1GR201~ RP14-0q om "'""'-o.rc ,.""'-I ~o.c:r '? I D~A,~NG NO.
OIHCR-... OTY"""OV"'-C l 14-:.Jl 8-1SW
04TC \fin~ ----E'IQ. ... U,'t Of '#OR'<
MEASURES TO ACCESS THE STRUCTURAL BMP
1. TI-IE BMP MUST BE ACCESSIBLE TO EQUIPMENT NEEDED FOR MAINITNANCE. ACCESS REQUIREMENTS FOR MAINITNANCE 'MLL
VARY 'MTI-1 TI-IE TYPE OF FACILITY SELIECITD.
2. INFILTRATION BMPS, BIOFIL TRA TION BMPS AND MOST ABOVE-GROUND DEITNTION BA'..NS AND SAND FILTERS 'MLL TYPICALLY
REQUIRE ROUTINE LANDSCAPE MAINTENANCE USING THE SAME EQUIPMENT TI-IA T IS USED FOR GENERAL LANDSCAPE MAINTENANCE.
AT TIMES THESE BMPS MAY REQUIRE EXCAVATION OF CLOGGED MEDIA (E.G. BIORETENTION SOIL MEDIA, OR SANO FOR THE SAND
FILTER), AND SHOULID BE ACCESSIBLE TO APPROPRIATE EQUIPMENT FOR EXCAVATION AND REMOVAL/REPLACEMENT OF MEDIA.
3. ABOVE-GROUND DETENTION BASINS SHOULD INCLUDE ACCESS RAMPS FOR TRUCKS TO ENTER TI-IE BASIN TO BRING EQUIPMENT
ANO TO REMOVE MATERIALS.
4. UNDERGROUND BMPS SUCH AS DETENTION VAULTS, MEDIA FILTERS, OR GROSS POLLUTANT SEPARATORS USED AS FOREBAYS TO
OTHER BMPS, TYPICALLY REQUIRE ACCESS FOR A VACTOR TRUCK TO REMOVE MATERIALS PROPRIETARY BMPS SUCH AS MEDIA
FILTERS OR GROSS POLLUTANT SEPARATORS MAY REQUIRE ACCESS BY A FORKLIFT OR OTHER TRUCK FOR DELIVERY AND
REMOVAL OF MEDIA CARllRIDGES OR 011-IER INTERNAL COMPONENTS. ACCESS REQUIREMENTS MUST BE VERIFIED 111TH TI-IE
MANUFACTURER OF PROPRIETARY BMPS.
5. VACTOR TRUCKS ARE LARGE, HEAVY, AND DIFFICULT TO MANEUVER. STRUCTURAL BMPS THAT ARE MAINTAINED BY VACTOR
TRUCK MUST INCLUDE A LIEVEL PAO ADJACENT TO THE SllRUCTURAL BMP, PREFERABLY 111TH NO VEGETATION OR IRRIGATION
SYSTEM (OTHER\\1SE VEGETATION OR IRRIGATION SYSTEM MAY BE DESllROYED BY THE VACTOR llRUCK).
PLANTING NOTES:
NATIVE PLANTS RESILIENT TO VARIABLIE FLOW, TOLERANT TO SUMMER DROUGHT AND SATURATED SOIL COND!llONS. IE: THINGRASS,
YERBA MANZA, MARSH BACCAHRIS, CALIFORNIA FIELD SEDGE, SAN DIEGO SEDGE, RUSTY SEDGE, SALT GRASS, MEXICAN RUSH,
CALIFORNIA GREY RUSH, CANYON PRINCE \\1LD RYE, NEVIN'S BARBERRY, DEERGRASS AND LOW BULLRUSH, FULLY VEGETATE BOTTOM
OF BASIN.
BMP CATEGORY/TYPE
BIOFILTRATION BMP (BF-1) (FLOW THRU PLANTER).
1-w w
0::
I--en
w
~ en
C) = a..~ 2~ I
oo" I
DMA7 i ~;
i.u =
l
I l
G
DMA 9= 1570 SF
(STATEST)
BMP "F"
[8]106Sf'
Ltt
PROJECT AREA:
0.41 ACRES
DISTURBED AREAS:
0.45 ACRES
CCSYA NOTE:
PROJECT IS NOT WH!llN OR DOESN'T RECEIVE OR DRAINS FROM CR!llCAL COARSE SEDIMENT YIELD AREAS
SOIL TYPE NOTE:
THE ENTIRE SIIT IS CLASSIFIED AS MIC-Marina Laamy Coarse Sand SOIL TYPE B
GROUNDWATER NOTE:
APPROXIMATE DEPTH OF GROUNDWATER OF 13 FEET BELOW BELOW GRADE SEE PRELI MARY GEO TECHNICAL
EVALUATION FOR STATE AND OAK, LLP DATED DECEMBER 24, 2013 PROJECT NO. 6636-A-SC. THERES IS
NO GROUND WATER ONSIIT PER GAMA TRACKER.
WDID NO:
NOT APPLICABLE, PROJECT IS LIESS llHAN 1 ACRE
BMP"B"
f.;j) 59 SF
>-w
....J
....J
<(
1-w w
0::
I--en
w
I-<(
I--en
~· • ' • <
.. -· . .,_
-:"._ \i:.: . .
.------D-M_A_D_I_ST-R-IB_U_T-10-N-------, !i ! ~ ii <l
1-------------,-------------1 0 0 0 ----OAKAVE STATE ST
DMA4:860SF
DMA 5: 3755 SF
DMA6:1115SF
BMP "C": 200 SF DMA 1: 1580 SF BMP" A": 216 SF
BMP "C": 200 SF I OMA 2: 1080 SF BMP "A": 216 SF
BMP "D": 92 SF ! DMA 3: 1512 SF BMP "B": 59 SF
! DMA 7: 1560 SF BMP "E": 42 SF
! DMA 8: 2360 SF BMP "F": 106 SF -··-···--,-----f-------+-------+-------1
! DMA 9: 1570 SF BMP "G' : 47 SF
TOTAL: 5552 SF TOTAL: 9662 SF
K&S ENGINEERING, INC.
Planning . Engineering . Surveying
OAK AVENUE
ROOF PLAN
0 10 20 40 60 ----·-----<
GRAPHIC SCALE: 1" -20'
DOWNSPOUT
BUILDING
SllRUCTURAL WALLS
WITH WA ITRPROOF
MEMBRANE
18" S0IL/GR0\\1NG
MEDIUM
FlLITR FABRIC
. . ..
4'
REQUIRED TREATMENT CONTROL BMP TABLE
DESCRIPTION QUANTITY I
FLOW THRU PLANTER (CLEANSING) 7 EA.
VARIES DOWNSPOUT
CLEANOUT WITH WATERTIGHT CAP
ABOVE PONDING DEPTH
~~~
__rESERVOIR 6"MIN.
FINISH SURF ACE
3" OUTFALL PIPE CONNECT
TOSTREET ~-·~-~-~~-~·===~~~~~~~~i-·~·~-~-~-~~.-~.~~~~ ~~ ·-<:x.x<:,"Xx,,,,,:<'-0.-,_, _ •
. :,. .... ~ ;.-... :"7 ;,,~·. -:~"_.:· .-.. : .~.
12·· GRAVEL (3/8" TO 5/8") OR OTHER
APPROVED MATERIAL
FILTER FABRIC
DETAIL ONSITE FLOW THROUGH PLANTER
NOT TO SCALE
LJ
__ ..,__z• ·.· .-------=-1 . ~--., .
D=
ROW
7.7'
CLEANOUT 'MTH WATERTIGHT CAP
ABOVE PONDING DEPTH
PLANTI~GS
__J
OAK AVENUE
SOURCE CONTROL
· ... -.. :. .. ~--:_ ~-.
D
D
>-w
....J
....J
<CI
/ 3" ROUND GRATE OVERFLOW SET I 2· ABOVE SOIL
I ! RESERVOIR-2" MIN.
SMOOTH CONCRETE SEAT CAP
102.4g
100.66
DATE INITIAL
ENGINEER OF WORK
/1\
REVISION DESCRIPTION 7801 Mission Center Court, Suite 100
(619) 295-5565
Son Diego, CA 92108
Fax (519) 296-5564
IF PLAN SIZE IS LESS THAN 24"x36", THIS IS A
REDUCED COPY. SCALE PLAN ACCORDINGLY. NOT TO SCALE
LEGEND
SYMBOL
DMA TO STATE STREET
DMA TO OAK AVENUE
DRAINAGE MANAGEMENT AREA
BMP TABLE
BMP ID# BMPTYPE SYMBOL C~8a0A QTY DRAWING SHEET NO. NO.(S)
TREATMENT CONTROL
TC-32 7 47&-1SW 1
INSPECTION
FREQUENCY
AS NEEDED
MAINTENANCE
FREQUENCY
2 TIMES A YEAR
SOURCE CONTROL
TRASH
ENCLOSURE
SITE DESIGN/
LANDSCAPE
EFFICIENT
IRRIGATION
SD-32 2 47&-1 SW 1 AS NEEDED ASNEEOED
. . . . . . . . . . SD-10 .. ----... . -........ . . . . . -.... . . . . . --. --47&-1SW AS NEEDED AS NEEDED .. -. ---.. . . -....... . SD-12
.. SWQMP NO.: N/A ~------
MAINTENANCE AGREEMENT DOCUMENT: YES "1 NO
RECORDATION NO.: ____ _
PARTY RESPONSIBLE FOR MAINTENANCE:
NAME: STATE AND OAK-CARLSBAD, LLC
ADDRESS:1106 SECOND STREET
ENCINITAS, CA 92024
PHONE N0.:(619) 572-3556
PLAN PREPARED BY:
NAME HOSSE IN ZOMORRODI
COMPANY K&S ENGINEERING
ADDRESS 7801 MISSION CENTER CT.
SUITE 100
SAN DIEGO, CA 92108
PHONE NO. (619) 296-5565
BMPNOTES:
CONTACT:-MATTHEW GORDON
CERTIFICATION __ 4_3_23_5 __
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.
4. NO OCCUPANCY WILL BE GRANTED UNTIL THE CITY INSPECTION STAFF
HAS INSPECTED THIS PROJECT FOR APPROPRIATE BMP CONS1RUCTION
AND INSTALLATION.
5. REFER TO MAINTENANCE AGREEMENT DOCUMENT.
6. SEE PROJECT SWMP FOR ADDITIONAL INFORMATION. I I I
DATE INlllAL
OTHER APPROVAL
DMA2= 1080 SF -~
/
/
OMA 7= 1560 SF
BMP"D~ •••
I
, r--------.JI
o-.-..-------;,1 1
1 DMA1::158QSF :
>: ~-~ I
DMA9"' 1570SF
(S'JA'!E"1]
BMP "F"
OMA 5= 3755 SF
--I
I
\I ' 1\ ' " V "-/\ OMA 3=..1512 SF
!lll"M1''lls!
BMP"B" •••
DMA6=1115 F I \ I \
\ t"""'~""l DMA4='860 SF
lt::~'.1.1 \ I \ -'~
__ _,...._ __
--BMP"
Attachment 1 a
I SH~ET I CITY OF CARLSBAD I SHE~TS I
ENGINEERING DEPARTMENT
DMA EXHIBIT:
STATE MIXED USE 30
GR2016-0040 RP14-01
I
PROJECT NO. I DRAWING NO. DATE INlllAL
CT 14-01 CITY APPROVAL 478-1SW
~--·------------····-····~-.. ·········-·-······-·-··-----------------------------------------------------·--···-··· ---------------------------------------------------~ ---
Cl
a..~ ,-·,
:;;E :! cas
I-w i'u w =
a.." a::: ~~ l
I-CCE
DMA 9= 1570 SF
(STATE SO
BMP"F"
[S]1Cl6SF
CJ) I w
I-
1 ~
CJ)
I
1
L· .· • ' > ' [4]!51200 SF {181 SF}
BMP"O --
OMA DISTRIBUTION
OAK AVE STATE ST
DMA4:860SF BMP 'C" : 200 SF DMA 1: 1580 SF BMP" A": 216 SF
BMP "C' : 200 SF DMA 2: 1080 SF BMP "A": 216 SF OAK AVENUE DMA 5: 3755 SF
DMA6: 1115SF BMP 'D" : 92 SF DMA 3: 1512 SF BMP "B" : 59 SF ROOF PLAN
DMA 7: 1560 SF BMP "E' : 42 SF
DMA 8: 2360 SF BMP "F": 106 SF
DMA 9: 1570 SF BMP "G": 47 SF
TOTAL: 5552 SF TOTAL: 9662 SF
STANDARD PROJECT REQUIREMENT CHECKLIST
SOURCE CONTROL APPLIED
SC-1 PREVENTION OF LLICIT DISCHARGES YES
SC-2 STORM DRAIN STENCILING OR SIGNAGE YES
SC-5 PROTECT TRASH STORAGE AREAS FROM RAINFALL, RUNON-ON, YES RUNOFF, AND \'i1ND DISPERSAL
SC-6 ADDITIONAL BMPS
ON-SITE STORM DRAIN INLETS YES
INTERIOR FLOOR DRAINS AND ELEVATOR SHAFT SUMP PUMPS YES
INTERIOR PARKING GARAGES YES
NEED FOR FUTURE INDOOR & STRUCTURAL PEST CONTROL YES
LANDSCAPE IOUTIDOOR PESTICIDE USE YES
REFUSE AREAS YES
FIRE SPRINKLER YES
MISCELLANEOUS DRAIN OR WASH WATER YES
MAINTENANCE NOTE:
~ K&S ENGINEERING, INC. &J Planning . Engineering . Surveying
OWNER SHALL MAKE ACCESS TO ALL ONSITE BMPS AVAILABLE TO CITY STAFF
DURING CITY BUSINESS HOURS FOR INSPECTION AND IF NECESSARY, MAINTENANCE
AND/OR REPAIR WHEN PROPERTY OWNER FAILS TO MAINTAIN IN ACCORDANCE
\'i1TIH BMP MAINTENANCE AGREEMENT \'i1TIH TIHE CITY.
7801 Mission Center Court, Suite 100 Son Diego, CA 92108
(619) 296-5565 Fox: (619) 296-5564
BMP"B" i'lM~
>-w
.....J
.....J
<(
== =:::! · ... -: -. -.. : . : .. ' ..
[f: .. : ., .: ~
; _ .... -:..-.
. ~ .··.-.
I-. " ·,
w w a::: ,;.·;,
I-
I CJ)
w
I-<(
I-
CJ)
0 10 20 40 60
GRAPHIC SCALE: 1" -20'
IF PLA'N SIZE IS LESS THAN 24"x36", THIS IS A
REDUCEOGOPY. SCALE PLAN ACCORDINGLY:
DOWNSPOUT
BUILDING
STRUCTURAL WALLS
\'i1TIH WATERPROOF
MEMBRANE
18" SOIL/GROWING
MEDIUM
FILTER FABRIC
FOUNDATION
DRAINS AS
REQUIRED
4'
ROW
7.7'
CLEANOUT \'i1TIH WATERTIGHT CAP
ABOVE PONDING DEPTIH
PLANTI~GS
[
3" ROUND GRATE OVERFLOW SET
2" ABOVE SOIL
RESERVOIR-2" MIN.
NOT TO SCALE
SMOOTIH CONCRETE SEAT CAP
102.49
llla66
LJ
IL@1r ~@
--==-===-~
D
>-w
.....J
.....J
<CI I
I
D L
OAK AVENUE
SOURCE CONTROL
VARIES DOWNSPOUT
LEGEND
SYMBOL
OMA TO STATE STIREET
OMA TO OAK AVENUE
BMP TABLE
BMP ID# BMPTYPE SYMBOL CASQA QTY DRAWING SHEET
NO. NO. NO.(S)
TREATMENT CONTROL
ROOF DRAIN TO ~
INSPECTION
FREQUENCY
MAINTENANCE
FREQUENCY
@-@ FL01;1~~j:AtJER -TC-32 7 478-1SW 1 AS NEEDED 2 TIMES A YEAR
SOURCE CONTROL
TRASH
ENCLOSURE
SITE DESIGN/
LANDSCAPE
EFFICIENT
IRRIGATION
... . . . . . . . . . . ......... . . . . . . -. . . -. -. . -. . -. --. . . . . . . .
SD-32 2 478-1SW
SD-10
1 478-1SW
SD-12
SWQMPNO~.:~N/~A~~-
1 AS NEEDED
1 AS NEEDED
MAINTENANCE AGREEMENT DOCUMENT: YES .<f NO
RECORDATION NO.: ____ _
PAR1Y RESPONSIBLE FOR MAINTENANCE:
AS NEEDED
AS NEEDED
NAME: STATE AND OAK-CARLSBAD, LLC
ADDRESS: 1106 SECOND STREET
ENCINITAS, CA 92024
CONTACT:· MATIHEW GORDON
PHONE N0.:(619) 572-3556
PLAN PREPARED BY:
NAME ___ H_OS_S_EI_N_ZO_M_O_RR~O_D_I _
COMPANY K&S ENGINEERING
ADDRESS 7801 MISSION CENTER CT.
SUITE 100
SAN DIEGO, CA 92108
PHONE NO. (619) 296-5565 CERTIFICATION __ 43_2_3_5 __
CLEANOUT 'MTIH WATERTIGHT CAP
ABOVE PONDING DEFTIH
BMPNOTES:
1. THESE BMPSARE.MANDATORY TOBE INSTALLED PER MANUFACTURER'S
RECOMMEND A TIO NS OR 1HESE PLANS.
FINISH SURF ACE
OUTIFALL PIPE CONNECT TO
STREET
12" GRAVEL (3/8" TO 5/8") OR OTIHER
APPROVED MATERIAL
R,!JiiplMl~~;=;i
_rESERVOIR 6"MIN.
FILTER FABRIC
DETAIL ONSITE FLOW THROUGH PLANTER
NOT TO SCALE
/1\
DATE INlllAL
ENGINEER OF WORK REVISION DESCRIPTION
------------------
DATE INITIAL
OTIHER APPROVAL
2. NO CHANGES TO THE PROPOSED BMPS ON 1HIS 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.
5. REFER TO MAINTENANCE AGREEMENT DOCUMENT.
6. SEE PROJECT SWMP FOR ADDITIONAL INFORMATION.
Attachment 4
I SH~ET I CITY OF CARLSBAD I SHE~TS I
ENGINEERING DEPARTMENT
SINGLE SHEET BMP EXHIBIT FOR:
STATE MIXED USE 30
GR2016-0040 RP14-01
I
PROJECT NO. I DRAWING NO. DATE INITIAL
CITY APPROVAL CT 14-01 478-1 SW
----------