HomeMy WebLinkAboutCT 12-07; Valley 17; Storm Water Quality; 2014-08-14Storm Water Management Plan
for
FILE COPY
SWMP 13-21
CT 12-07 / SDP 12-07
Valley 17
Corlsbod, CA
DWG-480-4A & 480-4
August 14, 2014
Prepared for:
••I • City Ventures
1900 Quail St
Newport Beach, CA 92660
/Si-:"- V
Prepared by:
^and^apman, P.E,
HZ Job No, 19-0110-60
HUTTP-ZDIJARS
Huitt-Zollars, Inc. Thousand Oaks
90 E Thousand Oaks Blvd, Suite 201
Thousand Oaks, CA 91360
Phone (805) 418-1802 Fax (805) 418-1819
Date
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CO
DC
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Table of Contents
Table of Contents 2
Project Setting 3
Applicable Stormwater Standards 3
Pollutants of Concern 5
Source Control Measures 7
Low Impact Development (LID) 7
Treatment Control BMPs 8
Documentation of Stormwater Water Design 9
Facility Maintenance Requirements 9
Certification 10
Appendix , 11
HuriTyoiiAKS Page 2
Project Setting
This report has been prepared to provide an analysis of the storm water runoff treatment in accordance
with Standard Urban Stormwater Mitigation Plans (SUSMP) as defined by the City of Carlsbad for the
development of the Carlsbad Valley and Oak project, located within the City of Carlsbad.
The Carlsbad Valley and Oak project proposes to develop an existing vacant space into a 17-unit
residential development. The site consists of an area of approximately 3.5 acres and is bound by Valley
Street to the northeast, Oak Street to the northwest, and existing residential development to the southwest
and southeast.
Currently the project site consists of vacant agricultural land. The surrounding area is suburban with
developed residential properties bordering the site. The existing drainage is overland surface flow to a
series of inlets that capture flow and discharge to an existing storm drain system located northwest of the
site. This drainage system is covered from this point to its discharge point in Buena Vista Lagoon. While
the Buena Vista Lagoon is not considered an exempt system, the City of Carlsbad conducted a study
("Hydromodification Exemption Analyses for Select Carlsbad Watersheds", dated June 10, 2013, prepared
by Chang Consultants) that determined that the Buena Vista Lagoon is a stabilized conveyance system to
an exempt water body (the Pacific Ocean).
Proposed improvements to develop the site include 17-units of single family development with associated
streets and sidewalks. Proposed site utilities will be constructed to serve the development, including a
proposed onsite storm drain system. The residential development will increase the overall impervious area
of the site; however, proposed site drainage features and BMP's will mitigate the increase in runoff and
improve storm water quality leaving the site.
A vicinity map outlining the location of the proposed project is included as Attachment A to this report.
Applicable Stormwater Standards
The completed Storm Water Standards Questionnaire is included as Attachment B to this report. This
identifies the project as a Priority Development Project requiring the expanded Storm Water Management
Plan. This document has been prepared pursuant to the Storm Water Management Plan (SWMP)
Requirements Checklist per City of Carlsbad Handout E-35
Per the HMP applicability checklist (Figure 1), this project is not subject to hydromodification plan (HMP)
requirements. Per the City of Carlsbad study dated June 10, 2013, Buena Vista Lagoon has been
determined to be a stabilized conveyance to an exempt system (the Pacific Ocean). Upstream from the
lagoon, the site is connected through covered storm drain from the site outlet. Exceptions exist for projects
HllIir~Z()l]AJ<S P^9^3
draining to stabilized systems that are covered from the point of connection to discharge points in the
ocean.
The following figure (Figure 1) demonstrates this project's path to HMP exemption:
14. HyfcwwdlltijWion Cvtnit R>qoiwtf
Figure 1: HMP Applicability Checklist
HIIITPZOILAKS Page 4
Pollutants of Concern
The City of Carlsbad's SUSMP guidance specifies the identification and description of areas in which
stormwater may contact and convey various pollutants offsite. These are identified as follows:
• Sediments - Rooftop areas and paved areas are susceptible to collecting dust and silt from wind
and rain events. Additionally, landscaping activities onsite have the potential to wash silt and other
suspendable solids into the roadways and subsequent drainage conveyances.
• Nutrients - Fertilizer that may be applied to landscaped areas as well as potential soil additives
(i.e. peat) to landscaped areas and potted plants in household areas provided minimal potential for
nutrients to enter stormwater conveyances.
• Metals - Contact with vehicles and other metal objects may create potential for metals to be
collected by onsite drainage conveyances. There are no onsite industrial uses that pose a
significant source for metals to be of notable concern.
• Organic Compounds - Pesticides, solvents, and hydrocarbons onsite have the potential to pollute
stormwater. The usage of these compounds are anticipated to be limited use by individual
homeowners, providing moderate risk for runoff to convey these items. There are no onsite
industrial uses that pose a significant source for organic compounds to be of notable concern.
• Trash & Debris - Onsite trash will be collected and stored within individual units (garages),
providing roof and wall structures to prevent water and wind from carrying trash. That said, some
risk remains for trash and litter to be collected in stormwater conveyances, mainly resulting from
potential litter.
• Oxygen Demanding Substances - These substances include biodegradable organic material
that react with dissolved oxygen to form other compounds. Some household chemicals and uses
have the potential to create this demand, and landscaping will add to this potential.
• Oil & Grease - The housing units are surrounded by various driveways, each of which will collect
oil and grease from vehicle traffic passing over them. Additionally, potential oil and grease from
residential uses exists (i.e. residents washing garage floor surfaces, emptying water onto
hardscape surfaces, etc).
• Bacteria and Viruses - Pathogens sources onsite are limited to dog and wildlife waste products.
Due to the project location, dog waste and limited bird / other animal waste are anticipated to be
the largest potential, which will likely be largely mitigated by continuing landscape services that
remove waste prior to being washed into drainage conveyances.
• Pesticides - Pesticide potential sources include landscape areas. As the project site contains
lawn areas, this is anticipated to be of some concern.
Per above, and per Table 2-1 of the City SUSMP guidance, the pollutants of concern for this project are
sediment, nutrients, trash & debris, oxygen demanding substances, oil & grease, bacteria and
viruses, and pesticides.
This project is located in the El Salto Hydrologic Subarea (904.21) of the Buena Vista Creek Watershed in
the Carlsbad Hydrologic Unit in the San Diego Region. This information was obtained from the Caltrans
Water Quality Planning Tool (http://svctenvims.dot.ca.gov/wqpt/wqpt.aspx). Buena Vista Lagoon, the
portion of the Buena Vista Creek Watershed that this project drains to, is listed on the 303(d) list for
impairment of indicator bacteria, nutrients, and sedimentation/siltation. This information is included within
the attachments to this report.
Beneficial uses for this hydrologic unit are as follows, with information per the Water Quality Control Plan
for the San Diego Basin:
• Contact Water Recreation (REC-1) - Includes uses of water for recreational activities involving
body contact with water, where ingestion of water is reasonably possible. These uses include, but
are not limited to, swimming, wading, water-skiing, skin and SCUBA diving, surfing, white water
activities, fishing, or use of natural hot springs.
• Non-contact Water Recreation (REC-2) - Includes the uses of water for recreational activities
involving proximity to water, but not normally involving body contact with water, where ingestion of
water is reasonably possible. These uses include, but are not limited to, picnicking, sunbathing,
hiking, beachcombing, camping, boating, tidepool and marine life study, hunting, sightseeing, or
aesthetic enjoyment in conjunction with the above activities.
• Preservation of Biological Habitats of Special Significance (BIOL) - Includes uses of water
that support designated areas or habitats, such as established refuges, parks, sanctuaries,
ecological reserves, or Areas of Special Biological Significance (ASBS), where the preservation or
enhancement of natural resources requires special protection.
• Estuarine Habitat (EST) - Includes uses of water that support estuarine ecosystems including, but
not limited to, preservation or enhancement of estuarine habitats, vegetation, fish, shellfish, or
wildlife (e.g., estuarine mammals, waterfowl, shorebirds).
• Wildlife Habitat (WILD) - Includes uses of water that support terrestrial ecosystems including, but
not limited to, preservation and enhancement of terrestrial habitats, vegetation, wildlife (e.g.,
mammals, birds, reptiles, amphibians, invertebrates), or wildlife water and food sources.
• Rare, Threatened, or Endangered Species (RARE) - Includes uses of water that support
habitats necessary, at least in part, for the survival and successful maintenance of plant or animal
species established under state or federal law as rare, threatened or endangered.
• Marine Habitat (MAR) - Includes uses of water that support marine ecosystems including, but not
limited to, preservation or enhancement of marine habitats, vegetation such as kelp, fish, shellfish,
or wildlife (e.g., marine mammals, shorebirds).
• Warm Freshwater Habitat (WARM) - Includes uses of water that support warm water ecosystems
including, but not limited to, preservation or enhancement of aquatic habitats, vegetation, fish or
wildlife, including invertebrates.
HlllTrailAKS Pages
Source Control Measures
The development of the site as a single family residential project creates inherent challenges to providing
source control BMPs. As the effectiveness of these BMPs is dependent on local homeowners
implementing and maintaining these prior to water exiting the site, enforcement and maintenance of this is
difficult. The following are proposed with these limitations in mind:
Potential Source of Runoff
Pollutants
Permanent Source Control
BMPs
Operational Source Control
BMPs
Sediment Self-retaining areas Eliminate overwatering, regular
street sweeping
Nutrients Self-retaining areas Eliminate ovenwatering, reduce
fertilizer use
Trash & Debris Covered trash facilities (garages),
covered receptacles
Regular street sweeping
Oxygen-Demanding
Substances
Self-retaining areas Eliminate overwatering, reduce
fertilizer use
Oil & Grease Limited street parking Regular street sweeping, clean up
spills
Bacteria & Viruses Self-retaining areas Regular street sweeping,
eliminate overwatering
Pesticides Self-retaining areas Eliminate overwatering, reduce
fertilizer use
Low Impact Development (LID)
This site is designed with separate onsite Drainage Management Areas (DMAs) specific to each lot,
identified on the attached exhibit. These areas are numbered sequentially (from 1 to 20) and are shown on
the attached exhibit. Each of these DMAs are intended to capture and treat SUSMP flows prior to
discharge from the lot. Within the attachments to this report are calculations for the required volume and
surface area for each lot's treatment system, which is proposed as biofiltration basins with storm drain
connections to private systems that ultimately connect to the public system. The basins for Lots 13-17 are
combined as a single, large basin within Lot 13.
Several of the items outlined on the "Optimization of Site Layout" are either inherent in the proposed design
or not applicable. Specifically, the limitation of development envelope is not applicable due to the small
size of developable area and site location. Preservation of natural drainage features is also not applicable
as the site does not have any natural drainage features to speak of Existing drainage features include
non-natural storm drain inlets and facilities, which are being used to some extent as part of the site design.
HUllh/OllAllS Page 7
Setbacks of creeks, wetlands, and riparian habitats are inherent in this site design as the site is set far
away from these beneficial uses already. The site aims to minimize imperviousness, and does with
relatively large lot design; however, there are no large parking areas or other areas in which pervious
paving can be used.
Ultimately, this project seeks to maximize LID design through Integrated Management Practices (IMPs),
specifically combining lot-level design with operation source control BMPs (street sweeping and education).
Drainage inlets will treat stormwater prior to conveyance into the downstream storm drain system. The
devices anticipated are catch basin insert devices (which collect and treat the first flush event) or similar
equivalent. The combination of lot-by-lot infiltration devices with the flow-through catch basin insert devices
outlined on the plan herein will satisfy the Integrated Management Practices approach.
Supporting sizing information is provided as Attachment C to this report.
Treatment Control BMPs
As this site is exempt from hydromodification mitigation, treatment control BMPs are proposed as the water
quality treatment for this site. As identified previously, the pollutants of concern for this site are sediment,
nutrients, trash & debris, oxygen demanding substances, oil & grease, bacteria and viruses, and pesticides.
To adequately treat the overall site, treatment strategies are separated by land usage. Individual lot areas
will be treated using biofiltration basins, with roadway areas treated using a combination of vegetated
swales and catch basin inserts. Bilfiltration basins address both biological treatment and filtration through
media. Biological treatment addresses nutrients, oxygen demanding substances, oil & grease, bacteria
and viruses, and pesticides, while filtration addresses trash & debris and sediment.
Roadway treatment addresses biological treatment through vegetated swales and filtration through the
catch basin inserts, ultimately addressing pollutants of concern similarly to the flow through planters.
Biofiltration basins were sized using a flow-based approach. Flows and subsequent required surface areas
were calculated per criteria in the City of Carisbad SUSMP manual (calculations provided as an attachment
to this report). Sizing was based on a factor of 0.04 (which is based on dividing the SUSMP rainfall
intensity of 0.2 inches per hour by the flux rate through the media of 5 inches per hour). Planters will outlet
into private storm drain that will then connect to the public storm drain.
Roadway areas will drain to vegetated swales, a BMP that is also a flow-based device. Flow will enter
these via proposed curb cuts, will be treated, and then released via downstream curb cuts. Treated flow
will surface flow a short distance into proposed catch basins, where flow will be additionally polished via
catch basin inserts. Both BMPs are flow-based devices, with the vegetated swales sized using CASQA
HI 11 1 ra )l lARS Pages
(California Stormwater Quality Association) criteria and catch basin inserts being a proprietary device with
sizing criteria provided bythe manufacturer (BioClean).
As none of the facilities discussed in this section are dependent on infiltration, geotechnical
recommendations on infiltration rates will not impact the design of these BMPs.
Documentation of Stormwater Water Design
Hydrology maps and calculations are included within the attachments to this report. Additionally included
are worksheets demonstrating the tabulation of each DMA. Each lot DMA is similar, with land use divided
between landscape, rooftop, and concrete. Rooftop and concrete areas utilize a DMA runoff factor of 1.0,
while landscape areas utilize a DMA runoff factor of 0.1. For roadway areas, concrete/asphalt was used
with a DMA factor of 1.0.
As discussed throughout this report, TCBMPs for the individual lots are proposed as flow-through planter
boxes with additional storage capability to mitigate the 100-year storm increase. Roadway areas are
treated initially by vegetated swales and then by catch basin filters. Sizing for each of these facilities is
supported by calculations included within the attachments to this report.
Facility Maintenance Requirements
This project is intended to be developed without an associated HOA. Maintenance will be the responsibility
of homeowners for private lot areas and for parkways adjacent to the right-of-way (which will be owned by
the City). Areas within the curb and sidewalk will be maintained by the City, including the catch basin insert
devices.
As this relates to the water quality design outlined herein, the planter box systems and detention outlets will
be maintained by individual lot owners. This may require deed restrictions and/or maintenance covenants
to be put in place to ensure that these devices are maintained in perpetuity and n^^rfeTnoved 1t>'Mfe'*fnture."
Maintenance on these is not anticipated to be burdensome; rather, maintaining a clean system and
ensuring functionality will likely keep these devices functional. Eventual media and plant replacement is
anticipated due to buildup of sediment and pollutants over time.
Catch basin insert devices will be maintained by the City of Carlsbad. These maintenance requirements
are provided by the manufacturer, with relevant information included as Attachment D to this report. City
Ventures, as the developer, and its assignees will accept responsibility for operation and maintenance of
facilities until that responsibility is formally transferred.
hiuiiiyoHARS p^ges
Certification
The selection, sizing, and preliminary design of stormwater treatment and other control measures in this
plan meet the requirements of Regional Water Quality Control Board Order R9-2007-0001 and subsequent
amendments.
, 069614, Exp. 6/30/14 Date
I certify that, as owner of the property described herein, I have read and understand the requirements of
this Storm Water Management Plan (SWMP) and that I am responsible for ensuring that all stormwater
treatment measures described within said SWMP will be properly implemented, monitored, and maintained.
The selection, sizing, and preliminary design of stonnwater treatment and other control measures in this
plan meet the requirements of Regional Water Quality Control Board Order R9-2007-0001 and subsequent
amendments.
AA^y><2jA-
'for: City Ventures ^
^>v|t M^teui Gtrbtr Date
HLIITPZ)LIARS Page 10
Appendix
Attachment A. Vicinity Map
Attachment B. Storm Water Standards Questionnaire
Attachment C. IMP Sizing Information
Attachment D. Maintenance Requirements
Attachment E. Post-Construction BMP Exhibit
HlJ[H-/i)llAKS P^geii
Attochment A
Vicinity Mop
TO VISTA
PROJECT
LOCATION
v.
PACIFIC OCEAN
VICINITY MAP
NOT TO SCALE
Attochment B
Storm Woter Stondords Questionnoire
CITY OF
CARLSBAD
STORM WATER
STANDARDS
QUESTIONNAIRE
E-34
Development Services
Land Development Engineering
1635 FaradayAvenue
760-602-2750
www.carlsbadca.gov
INSTRUCTIONS:
To address post-development pollutants that may be generated from development projects, thie City requires that new
development and significant redevelopment priority projects incorporate Permanent Storm Water Best Management
Practices (BIVIP's) into the project design per the City's Standard Urban Stormwater Management Plan (SUSMP). To
view the SUSMP, refer to the Engineering Standards (Volume 4, Chapter 2) at www.carlsbadca.aov/standards.
Initially 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 Stormwater Requirements' or be subject to additional criteria
called 'Priority Development Project Requirements'. Many aspects of project site design are dependent upon the
storm water standards applied to a project.
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 incorrectiy filled out and is subject to more stringent storm water standards than
initially assessed by you, this will result in the return ofthe 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 separate completed and signed questionnaire must be submitted for each new development application submission.
Only one completed and signed questionnaire is required when multiple development applications for the same project
are submitted concurrently. In addition to this questionnaire, you must also complete, sign and submit a Project Threat
Assessment Form with construction permits for the project.
Please start by completing Section 1 and follow the instructions. When completed, sign the fonn at the end and submit
this with your application to the city.
SECTION 1 HBN DEVELOPMENT
Does your project meet one or more of the following criteria: YES NO
1 Housina subdivisions of 10 or more dwelllna units. Examples: single family homes, multi-family homes,
condominium and apartments X 2. Commercial - areater than 1-acre. Any development other than heavy Industry or residential. Examples: hospitals;
laboratories and other medical facilities; educational institutions; recreational facilities; municipal facilities; commercial
nurseries; multi-apartment buildings; car wash facilities; mini-malls and other business complexes; shopping malls;
hotels: office buildings; public warehouses: automotive dealerships: airfields: and other light industrial facilities. X 3. Heaw Industrial / Industry- areater than 1 acre. Examples: manufacturinq plants, food processing plants, metal
working facilities, printing plants, and fleet storage areas (bus, truck, etc.).
4. Automotive reoair shoo. A facilitv categorized In anv one of Standard Industrial Classification (SIC) codes 5013,
5014, 5541, 7532-7534, and 7536-7539
5. Restaurants. Any facility that sells prepared foods and drinks for consumption. Including stationary lunch counters
and refreshment stands selling prepared foods and drinks for immediate consumption (SIC code 5812), where the
land area for development is greater than 5,000 square feet. Restaurants where land development is less than 5,000
square feet shall meet all SUSMP requirements except for structural treatment BMP and numeric sizing criteria
requirements and hydromodification requirements.
E-34 Page 1 of 3 REV 1/14/11
^ CITY
CARLSBAD
O F
STORM WATER
STANDARDS
QUESTIONNAIRE
E-34
Development Services
Land Development Engineering
1635 Faraday Avenue
76a602-2750
www.carlsbadca.gov
6. Hillside develooment Anv develooment that creatRS mnrp thsn finnn .<5qiiarfi fppt nf impRruini le «iirfflrf> anrt ie
located in an area with known erosive soil conditions, where the development will grade on any natural slope that is
twenty-five percent (25%) or greater.
7. Bnvironmentallv Sensitive Area fESAi'. All develooment located within or dirfictly adjanent^ tn nr rtisrharriinq
direcUy* to an ESA (where discharges from the development or redevelopment will enter receiving waters within the
ESA), which either creates 2,500 square feet or more of Impervious surface on a proposed project site or increases
the area of imperviousness of a proposed proiect site 10% or more of its naturally occumnq condition.
8. Parklna lot Area of 5.000 square feet or more or with 15 or more parking spar.f>.<s anri pntBntially AYpnswri tr, urhan
runoff
9. Streets, roads, hiahwavs. and freeways. Anv oaved surface that is 5.000 square feet or greater used fnr the
transportation of automobiles, trucks, motorcycles, and other vehicles X 10. Retaif Q^,§glin^ 9ilt!ft9 Sen/inq more than inn vehirlP.<s per day anri r)rf>atPr than F.mr\ er^iiam feot X 11. Coastal Develooment Zone. Anv oroiect located within 200 feet of the Pacific Ocean and (11 createR mnrp than
2500 square feet of impervious surface or (2) Increases Impervious surface on property by more than 10%.
1
X 12. Mora than f-acra of disturbance. Proiect results in the disturbance nf 1-anre nr mnrp. of land anri is rnnairiprprt a
Pollutant-generating Development Project^. X
Biological Significance by Ihe Slate Water Resources Control Board (Water Quality Conlrol Plan lor Ihe San Diego Basin (1994) and amendments); water bodies
destgnaled with the RARE beneficial use by Ihe Stale Water Resources Conlrol Board (Water QuaKit/ Conlrol Plan for the San Diego Basin (1994) and amendments);
areas designaled as preseroes or Iheir equivaleni under Ihe MuHi Species Consewation Program wilhin Ihe Cities and Couniy of San Diego; and any other equivalent
environmentally sensitive areas which have been idenlilied by Ihe Copermillees
2 "Directly adjacent" means situated wifhin 200 feet ofthe Environmentally Sensitive Area.
3 "Discharging directly to" means outflow from a drainage conveyance system that is composed entirely of flows from the subject development or redevelopment site, and
not commingled with flow from adjacent lands
4 Pollutant-generating Development Projects are those projecis that generate pollutants at levels greater than background levels. In general, these include all projects
that contribute to an exceedance to an impaired water body or which create new impervious surfaces greater than 5000 square feet and/or introduce new landscaping
areas that require routine use of fertilizers and pesticides. In most cases linear pathway projects that are for infrequent vehicle use, such as emergency or maintenance
access, or for pedestrian or bicycle use. are not considered Pollutant-generating Development Projects if they are built with pen/ious surfaces or if they sheet flow to
surrounding pervious surfaces.
INSTRUCTIONS:
Section 1 Results:
If you answered YES to ANY of the questions above, your project is subject to Priority Development Project requirements. Skip Section 2 and
please proceed to Section 3. Check the "meets PRIORITY DEVELOPMENT PROJECT requirements" box in Section 3. Additional storm water
requirements will apply per the SUSIMP.
If you answered NO to ALL of the questions above, then please proceed to Section 2 and follow the instructions.
E-34 Page 2 of 3 REV 1/14/11
4k
CITY OF
CARLSBAD
STORM WATER
STANDARDS
QUESTIONNAIRE
E-34
Development Services
Land Development Engineering
1635 FaradayAvenue
760-602-2750
www.carlsbadca.gov
SECTION 2 SIGNIFICANT REDEVELOPMENT
INSTRUCTIONS: Complete the questions below regarding your project YES NO
1. Project results In the disturbance of 1-acre or more of land and is considered a Pollutant-generating Development
Proiect *?
INSTRUCTIONS: If you answered NO, please proceed to question 2.
Ifyou answered YES, then you ARE a significant redevelopment and you ARE subject to PRIORITY DEVELOPMENT PROJECT
reouirements. Please check the "meets PRIORITY DEVELOPMENT PROJECT requirements" box in Section 3 below.
2. Is the project redeveloping an existing priority project type? (Priority projects are defined in Section 1)
INSTRUCTIONS: If you answered YES, please proceed to question 3.
If you answered NO, then you ARE NOT a significant redevelopment and your project is subject to STANDARD STORMWATER
REQUIREMENTS. Please check the "does not meet PDP requirements" box in Section 3 below.
3. Is the work limited to trenching and resurfacing associated with utility work; resurfacing and reconfiguring surface
parking lots and existing roadways; new sidewalk; bike lane on existing road and/or routine maintenance of damaged
pavement such as pothole repair? Resurfacing/reconfiguring parking lots is where the work does not expose underlying soil
during construction.
INSTRUCTIONS: If you answered NO, then proceed to question 4.
If you answered YES, then you ARE NOT a significant redevelopment and your project is subject to STANDARD STORMWATER
REQUIREMENTS. Please check the "does not meet PDP requirements" box in Section 3 below.
4. Will your redevelopment project create, replace, or add at least 5,000 square feet of impervious surfaces on existing
developed property or will your project be located within 200 feet of the Pacific Ocean and (1) create 2500 square feet or
more of impervious surface or (2) increases impervious surface on the property by more than 10%? Replacement of
existing impervious surfaces includes any activity that is not part of routine maintenance where impervious material(s) are
removed, exposinq underlying soil durinq construction.
INSTRUCTIONS: If you answered YES, you ARE a significant redevelopment, and you ARE subject to PRIORITY DEVELOPMENT
PROJECT requirements. Please check the "meets PRIORITY DEVELOPMENT PROJECT requirements" box in Section 3 below. Review
SUSMP to find out if SUSMP requirements apply to your project envelope or the entire project site.
If you answered NO, then you ARE NOT a significant redevelopment and your project is subject to STANDARD STORMWATER
REQUIREMENTS. Please check the "does not meet PDP requirements" box in Section 3 below.
'for definition see Footnote 4 on page 2
SECTION 3 QUESTIONNAIRE RESULTS
M My project meets PRIORITY DEVELOPMENT PROJECT (PDP) requirements and must comply with additional stormwater criteria
per the SUSMP and I understand I must prepare a Storm Water Management Plan for submittal at time of application. I understand
flow control (hydromodification) requirements may apply to my project. Refer to SUSMP for details.
• My project does not meet PDP requirements and must only comply with STANDARD STORMWATER REQUIREMENTS per the
SUSMP. As part of these requirements, I will incorporate low impact development strategies throughout my project.
Applicant Information and Signature Box This Box for City Use Only
Address: Assessor's Parcel Number(s):
Applicant Name: Applicant Title:
Applicant Signature: Date:
City Concurrence: YES NO
By:
Project ID:
E-34 Page 3 of 3 REV 1/14/11
Attachment C
IMP Sizing Information
HUITT-ZOLLARS, INC.
Assumptions
C
C
0.9 (street)
0.5 (lots)
0.2 in/hr
Summary of Treatment Calculations By: R Chapman
3/10/2014
Calculations
ID Area (sf) QBMP (cfs) VBMP (cf) Treatment
1
2
3 39020 0.09 850 Flow-Through Planter
4
5
6 12266 0.05 Catch Basin Insert
7 8154 0.02 125 Flow-Through Planter
8 7761 0.02 125 Flow-Through Planter
9 7764 0.02 125 Flow-Through Planter
10 7767 0.02 125 Flow-Through Planter
11 7777 0.02 125 Flow-Through Planter
12 10761 0.02 125 Flow-Through Planter
13 13506 0.06 Catch Basin Insert
14 7874 0.02 125 Flow-Through Planter
15 7501 0.02 125 Flow-Through Planter
16 7501 0.02 125 Flow-Through Planter
17 7501 0.02 125 Flow-Through Planter
18 7501 0.02 125 Flow-Through Planter
19 8090 0.02 125 Flow-Through Planter
20 9363 0.04 Catch Basin Insert
QBPM = C*I'*A (converted to acres)
VBPM = Based on 250 ft^ footprint, 6" depth (250 ft^ total) - minimum area per worksheets per DMA
See DMA BMP calculations for specific catch basin insert size and capacity
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 1-5
By: R Chapman
3/10/2014
DMA
DMA Area Post-Project Runoff DMA Area x
DMA Name (square ft) Surface Type Factor runoff factor
9A-1 15084 Roof 1 15084 1 IMP Sizing
9A-1 2593 Driveway 1 2593 factor Minimum Proposed
9A-1 21343 Landscape 0.1 2134 1 (WQonly) Area Area
39020 19811 1 0.04 792 850
0.4530241
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 6
By: R Chapman
3/10/2014
Catch Basin Insert Capacity:
QBMP
QcAPACITY
0.05 cfs (from Summary of Treatment Calculations Spreadsheet)
2.40 cfs (from manufacturer data provided in Attachment D)
QBMP < QCAPACITY' device is sufficient to handle tributary flows
HUITT-ZOLLARS, INC. Carlsbad 17 - Valley and Oak By: R Chapman
Date: 7/29/2013
Vegetated Swale Calculations
IMP Area 6
b(min)= 0.16 ft b used= ft
SQDF 0.05 cfs y used= 0.4 ft
n 0.2
y 0.42 ft
s 0.03 ft/ft
v= 0.03 fps
SQDF 0.05 cfs Qcap= 34.75 cfs Vcap= 1.58
A 1.840 sf
b 3 ft Base 1(b) 3 ft
V 0.4 ft Height 2 ft
z 4 (H:V) Side Slope H 4 V 1
Base 2 19 ft
(min)= 16 ft Area 22.00 sqft
SQDF 0.05 cfs R 1.13 ft
A 1.840 sf S 0.03 ft/ft
t 10 min
Notes:
1. SQDF = Water Quality Design Flow
2. n = Mannings roughness coefficient (0.2)
3. y = design flow depth, max is 5 inches (0.42 ft)
4. S = longitudinal slope (along direction of flow)
5. Velocity must be less than 1.0 fps
6. t = hydraulic residence time (7 min. minimum)
7. Vcap must not exceed 3.0 fps
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 7
By: R Chapman
3/10/2014
DMA
DMA Area Post-Project Runoff DMA Area x
DMA Name (square ft) Surface Type Factor runoff factor
lOA-2 3206 Roof 1 3206 IMP Sizing
lOA-2 335 Driveway 1 335 factor Minimum Proposed
lOA-2 4536 Landscape 0.1 454 1 (WQonly) Area Area
8077 3995 1 0.04 160 250
0.4384053
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 8
By: R Chapman
3/10/2014
DMA Area Post-Project
DMA
Runoff
Factor
DMA Area x
runoff factor
lOA-2 2969 Roof 1 2969 1 IMP Sizing
factor Minimum Proposed
(WQonly) Area Area
lOA-2 480 Driveway 1 480
IMP Sizing
factor Minimum Proposed
(WQonly) Area Area lOA-2 4312 Landscape 0.1 431 1
IMP Sizing
factor Minimum Proposed
(WQonly) Area Area
7761 3880 1 0.04 155 250
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 9
By: R Chapman
3/10/2014
DMA
DMA Area Post-Project Runoff DMA Area x
DMA Name (square ft) Surface Type Factor runoff factor
lOA-2 2971 Roof 1 2971 1 IMP Sizing
lOA-2 770 Driveway 1 770 factor Minimum Proposed
lOA-2 4020 Landscape 0.1 402 1 (WQonly) Area Area
7761 4143 1 0.04 166 250
0.4820255
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 10
By: R Chapman
3/10/2014
DMA Area Post-Project
DMA
Runoff
Factor
DMA Area x
runoff factor
lOA-2 2969 Roof 1 2969 1 IMP Sizing
factor Minimum Proposed
(WQonly) Area Area
lOA-2 480 Driveway 1 480
IMP Sizing
factor Minimum Proposed
(WQonly) Area Area lOA-2 4312 Landscape 0.1 431 1
IMP Sizing
factor Minimum Proposed
(WQonly) Area Area
7761 3880 1 0.04 155 250
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 11
By: R Chapman
3/10/2014
DMA
DMA Area Post-Project Runoff DMA Area x
DMA Name (square ft) Surface Type Factor runoff factor
lOA-2 3320 Roof 1 3320 1 IMP Sizing
lOA-2 668 Driveway 1 668 factor Minimum Proposed
lOA-2 3512 Landscape 0.1 351 1 (WQonly) Area Area
7500 4339 1 0.04 174 250
0.5317333
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 12
By: R Chapman
3/10/2014
DMA Area Post-Project
DMA Name (square ft) Surface Type
DMA
Runoff
Factor
DMA Area x
runoff factor
lOA-2 2763 Roof 1 2763 1 IMP Sizing
factor Minimum Proposed
(WQ only) Area Area
lOA-2 373 Driveway 1 373
IMP Sizing
factor Minimum Proposed
(WQ only) Area Area lOA-2 7392 Landscape 0.1 739 1
IMP Sizing
factor Minimum Proposed
(WQ only) Area Area
10528 3875 1 0.04 155 250
0
0.2978723
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 13
By: R Chapman
3/10/2014
Catch Basin Insert Capacity:
QBMP
QCAPACITY
0.06 cfs (from Summary of Treatment Calculations Spreadsheet)
2.40 cfs (from manufacturer data provided in Attachment D)
QBMP < QCAPACITY- device is sufficient to handle tributary flows
HUITT-ZOLLARS, INC. Carlsbad 17 - Valley and Qak By: R Chapman
Date: 7/29/2013
Vegetated Swale Calculations
IMP Area 13
b (min)= 0.20 ft b used= ft
SQDF 0.06 cfs y used= 0.4 ft
n 0.2
y 0.42 ft
S 0.03 ft/ft
V= 0.03 fps
SQDF 0.06 cfs Qcap= 34.75 cfs
A 1.840 sf
b 3 ft Base 1 (b) 3 ft
y 0.4 ft Height 2 ft
z 4 (H:V) Side Slope H 4
Base 2 19 ft
(min)= 20 ft Area 22.00 sqft
SQDF 0.06 cfs R 1.13 ft
A 1.840 sf S 0.03 ft/ft
t 10 min
Vcap= 1.58 fps
Notes:
1. SQDF = Water Quality Design Flow
2. n = Mannings roughness coefficient (0.2)
3. y = design flow depth, max is 5 inches (0.42 ft)
4. S = longitudinal slope (along direction of flow)
5. Velocity must be less than 1.0 fps
6. t = hydraulic residence time (7 min. minimum)
7. Vcap must not exceed 3.0 fps
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 14
By: R Chapman
3/10/2014
DMA
DMA Area Post-Project Runoff DMA Area x
DMA Name (square ft) Surface Type Factor runoff factor
16B-1 2969 Roof 1 2969 1 IMP Sizing
16B-1 480 Driveway 1 480 factor Minimum Proposed
16B-1 4311 Landscape 0.1 431 1 (WQonly) Area Area
7760 3880 i 0.04 155 250
0.4444588
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 15
By: R Chapman
3/10/2014
DMA Area Post-Project
DMA
Runoff
Factor
DMA Area x
runoff factor
16B-1 2971 Roof 1 2971 1 IMP Sizing
factor Minimum Proposed
(WQ only) Area Area
16B-1 768 Driveway 1 768
IMP Sizing
factor Minimum Proposed
(WQ only) Area Area 16B-1 3762 Landscape 0.1 376 1
IMP Sizing
factor Minimum Proposed
(WQ only) Area Area
7501 4115 1 0.04 165 250
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 16
By: R Chapman
3/10/2014
DMA
DMA Area Post-Project Runoff DMA Area x
DMA Name (square ft) Surface Type Factor runoff factor
16B-1 3206 Roof 1 3206 1 IMP Sizing
16B-1 335 Driveway 1 335 factor Minimum Proposed
16B-1 3963 Landscape 0.1 396 1 (WQonly) Area Area
7504 3937 1 0.04 157 250
0.4718817
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 17
By: R Chapman
3/10/2014
DMA Area Post-Project
DMA Name (square ft) Surface Type
DMA
Runoff
Factor
DMA Area x
runoff factor
16B-1 2971 Roof 1 2971 1 IMP Sizing
factor Minimum Proposed
(WQonly) Area Area
16B-1 771 Driveway 1 771
IMP Sizing
factor Minimum Proposed
(WQonly) Area Area 16B-1 3765 Landscape 0.1 377 1
IMP Sizing
factor Minimum Proposed
(WQonly) Area Area
7507 4119 1 0.04 165 250
0.4984681
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 18
By: R Chapman
3/10/2014
DMA
DMA Area Post-Project Runoff DMA Area x
DMA Name (square ft) Surface Type Factor runoff factor
16B-1 2969 Roof 1 2969 1 IMP Sizing
16B-1 480 Driveway 1 480 factor Minimum Proposed
16B-1 4060 Landscape 0.1 406 J (WQonly) Area Area
7509 3855 0.04 154 250
0.4593155
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 19
By: R Chapman
3/10/2014
DMA Area Post-Project
DMA
Runoff
Factor
DMA Area x
runoff factor
16B-1 2763 Roof 1 2763 1 IMP Sizing
factor Minimum Proposed
(WQonly) Area Area
16B-1 367 Driveway 1 367
IMP Sizing
factor Minimum Proposed
(WQonly) Area Area 16B-1 5096 Landscape 0.1 510 1
IMP Sizing
factor Minimum Proposed
(WQonly) Area Area
8226 3640 1 0.04 146 250
HUITT-ZOLLARS, INC. Drainage Management Area BMP Calculations
DMA 20
By: R Chapman
3/10/2014
Catch Basin Insert Capacity:
QBMP
QCAPACITY
0.04 cfs (from Summary of Treatment Calculations Spreadsheet)
2.40 cfs (from manufacturer data provided in Attachment D)
QBMP < QCAPACITY/ device is sufficient to handle tributary flows
HUITT-ZOLLARS, INC. Carlsbad 17 - Valley and Oak By: R Chapman
Date: 7/29/2013
Vegetated Swale Calculations
IMP Area 20
b (min)= 0.13 ft b used= ft
SQDF 0.04 cfs y used= 0.4 ft
n 0.2
y 0.42 ft
s 0.03 ft/ft
v= 0.02 fps
SQDF 0.04 cfs Qcap= 34.75 cfs
A 1.840 sf
b 3 ft Base 1 (b) 3 ft
y 0.4 ft Height 2 ft
z 4 (H:V) Side Slope H 4
Base 2 19 ft
(min)= 13 ft Area 22.00 sqft
SQDF 0.04 cfs R 1.13 ft
A 1.840 sf S 0.03 ft/ft
t 10 min
Vcap= 1.58 fps
Notes:
1. SQDF = Water Quality Design Flow
2. n = Mannings roughness coefficient (0.2)
3. y = design flow depth, max is 5 inches (0.42 ft)
4. S = longitudinal slope (along direction of flow)
5. Velocity must be less than 1.0 fps
6. t = hydraulic residence time (7 min. minimum)
7. Vcap must not exceed 3.0 fps
Attachment D
Maintenance Requirements
ROUND GISB HIGH CAPACITY WITH EASY MAINTENANCE
SHELF SYSTEM
FOR USE IN CURB INLETS SHELF srsTEU rmnoNS asB
FILTER DIRECTLY UNDER UWHOl£
OPDm OF EASY mUENANCE
REtmUBU SWRtl BOOU SimiER
LOCKING LATCH
STAINLESS STEEL DRIVE PH
•SHELF SrSIEU WEm
•SHElf SYSTEM TROUGH
GISB ROUND
FIGURE I:
DETAIL OF PARTS
wmM
WEm HEIGHT
GISB ROUND
OUUET fVt
FIGURE 2:
DETAIL OF CONFIGURATION
SHELF SYSTEU TROUGH
FIGURE 4:
DETAIL OF PROFILE
STAJNLESS STEEL-
DRIVE pm
FIGURE 3:
DETAIL OF MOUNTING
DRAWmO: GISB HIGH CfPAOTY DETAILS PATENTED
NOTES:
1. SHELF SYSTEM PROVmES FOR ENTKE COVERAGE
OF»moPEmsso TO D/VERTAa FLOW TO BASKET.
2. SHELF SYSTEM MANUFACTWED FROM MAim GRADE
FOERGLASS. GEL COATED FOR UV PROTECTON.
3. smr SYsmM ATTAcm TO THE CATCH BAsat WITH
NON-CORROStVE HARDWARE.
4. FLTRATKN BASKET STRUCTim MANIffACTWED OF MARM
GRADE FBERGIASS, Ga COATED FOR UV PROTECTION.
5. FILTRATION BASI^ FM SCREEN AM} COARSE CONTAMIENT SCREEN MAMJFACIIAED FROM STAMSSS STEEL
6. FTLTRAVON BASKH HOLDS BOOM OF ABSORBENT imiA TO
CAPmE HYDROCARBONS. BOOM IS EASIY REPIACED WITHOUT REMOVm MOmiNG HAROmRL
7. FURATTON BASKET LOCATION IS DKECRY mJER
MAmXS EASY MAINTENANCE.
a. LENGTH OF TROUGH CAN VARY FROM 2' TD 30'
TREATMENT FLOW RATE: 2.47 CFS MOOa f: BC-RGISB-18-24
WARRANTY: 5 YEAR MANUFACTURERS PROJECT:
BK) CLEAN ENVmmNTAL SERVKXS. INC. PO BOX m OCEANSK)E. CA 92049
PH0NE:760-433-7640 FAX:760-4J3-3176
REVtSKJNS:
REVISIONS:
DATE-SCALE- NTS REVISKm
DATE:
CAE:
DATE:
Biik CLEAN
(!L -L.^-y ENVIRONMENTAL SERVICES. INC.
WWW.BI0CLEANENV1R0NMENTAL.COM
DRAFTER: J.R.H. UNITS ' m€S REVTSKm DATE-PAGE I
MODEL # GISB-18-24 ROUND HIGH CAPACITY
GISB FILTER EASILY INSERTED
AND REMOVen FROM
MANHOLE OPENING WITHOUT
NEED OF ANY EOUIPMENT
FIGURE 1:
DETAIL OF INSTALLATION
HYDROCARBON
STORM BOOM
018
RLTER FLANGE
016
RLTER
HOUSING
010
BOTTOM SCREEN
Firs 21" AND GREATER
DIA. THROUGH HOLE
015.5
STORM BOOU
07.5
THROAT OPENING
FIGURE 2:
DETAIL OF DIAMETERS
FIGURE 3:
DETAIL OF PARTS
TRASH SCREEN
FLATENED EXPANDED
STAINLESS STEEL
3/4"X 1-3/4"
COARSE SCREEN
STAINLESS STEEL
4X4 MESH
MEDIUM SCREEN
STAINLESS STEEL
10 X 10 SCREEN
FINE MESH SCREEN
STAINLESS STEEL
14 X 18 SCREEN
BOTTOM HNE MESH SCREEN
STAINLESS STEEL
35 MESH SCREEN
FLOW RATES - GISB FILTER
TREATUENT FLOW RATE 2.47 eta* INCLUDES >7St CLOGONO FACTOR
nmmit mim urn B maa m M am>L r mm a mm mr nmar ai nt xma ome tmrirmsmiuun amoacmim-M.oen aaa. nw aooii omonua <n
-FLOW RATES CALCULATED USWB 7WF FOHOWING EQUATION
/j_<wM. u J-unti, cw = COEFFKIENT of - gn Q-SO*Cj*A y/2*g1i <=d DISCHARGE
DRAWING: GSB HIGH CAPACITY DETAILS PATENTED SEE PAGE 1 FOR NOTES
TREATMENT FLOW RATE: 2.47 CFS MOOa /• BC-RGISB-18-24
BIM CLEAN'
[L~.yA ENVIRONMENTAI. SERVICES, INC.
WARRANTY: 5 YEAR MANWACTUISRS PROJECT: BIM CLEAN'
[L~.yA ENVIRONMENTAI. SERVICES, INC.
BK) CLEAN ENVmmENTAL SERVKES. UK.
PO BOX 869 OCEANSm CA 92049
PHONE-760-4J3-7640 FAX:760-433-3l76
REVISKINS: DATE: BIM CLEAN'
[L~.yA ENVIRONMENTAI. SERVICES, INC.
BK) CLEAN ENVmmENTAL SERVKES. UK.
PO BOX 869 OCEANSm CA 92049
PHONE-760-4J3-7640 FAX:760-433-3l76 REVISONS-DATE:
WWW.B10CLEANENVIR0NMENTAL.COM MTE SCAU: NTS REVISK}NS: DATE: WWW.B10CLEANENVIR0NMENTAL.COM
ORAFTER: JJRJH. UNITS = INa€S REVISONS: DATE: PAX 2
ROUND GISB HIGH CAPACTTY WITH EASY MAINTENANCE
SHELF SYSTEM
FOR USE IN CUI^ INLETS
WTTH WINGS
REMOVABIF STORM BOOM SKIMMER
LOCKING lATCH
STAmiSS STEEL
om pm
•SHELF SYSTEM WEIR
SHELF SYSTEM POSnONS OSB
FILTER Dmm.Y UNDER MAm)l£
OPENHKS OF EASY MAINTENANCE
FBERGLASS DIVERTER
TO CHANNEL ALL WATER FROM WmO TO TROUGH
SHELF SYSTEM TROUGH
aSB ROUND
am oporn
FIGURE 1:
DETAIL OF PARTS
MANHOLE r— mm
• FIBERGLASS DIVERTER
TO CHANtm. AU. WATER
FROM WING TO TROUGH
• WING
•WEIR HEIGHT
FIGURE 2:
DETAIL OF CONFIGURATION
•OSB ROUND
•omm PIPE
SHELF SYSTEM TROUGH
FIGURE 4:
DETAIL OF PROFILE
STAMESS STEEL
Dim PIN
HGURE 3:
DETAIL OF MOUNTING
DRAmNG: OSB HIGH CAPACITY DETAILS PATENTED 8. LENGTH OF TROU&I CAN VARY FROM 2' TO 30'
TREATMENT FLOW RATE- 2.47 CFS MODEL /• BC-RGISB-18-24
Bm CLEAN'
(jL'VJr/ ENVIRONMENTAL SERVICES, INC.
WWW.BI0CLEANENVIR0NMENTAL.COM
WARRANTY: 5 YEAR MANIX'ACTURERS PROJECT: Bm CLEAN'
(jL'VJr/ ENVIRONMENTAL SERVICES, INC.
WWW.BI0CLEANENVIR0NMENTAL.COM
BK) CLEAN ENVmmNTAL XRVKXS. INC.
PO BOX 869 OCEANSIDE. CA 92049
PH0NE:760-433-7640 FAX:760-433-3176
REVISnNS: DATE Bm CLEAN'
(jL'VJr/ ENVIRONMENTAL SERVICES, INC.
WWW.BI0CLEANENVIR0NMENTAL.COM
BK) CLEAN ENVmmNTAL XRVKXS. INC.
PO BOX 869 OCEANSIDE. CA 92049
PH0NE:760-433-7640 FAX:760-433-3176 REVISKJNS: DATE
Bm CLEAN'
(jL'VJr/ ENVIRONMENTAL SERVICES, INC.
WWW.BI0CLEANENVIR0NMENTAL.COM DATE: SCAU: NTS REVISONS: CATE
Bm CLEAN'
(jL'VJr/ ENVIRONMENTAL SERVICES, INC.
WWW.BI0CLEANENVIR0NMENTAL.COM
DRAFTER: J.RJI. um = mcKS REVSKJNS: CATE PAGE 3
NOTES-
1. SHELF SYSTEM PROVIDES FOR ENTIRE COVERAGE
OF mET OKNING SO TO DIVERT AIL FLOW TO BASCET.
2. SmF SYSTEM MANUFACTmO FROM MAim GRADE
n^ROAss. ca COATED FOR UV PROTECTK)N.
3. 9IEIF SYSTEM ATT/OIED TO THE CATCH BASIN WITH
NON-CORROSIVE HARDWARE
4. FILTRATTON BA3(ET STRUCTURE MANUFACTIMD OF MARM
GRADE FSERGIASS, Ga COATED FOR UV PROTECTION
5. FTLTRATTON BASKET FINE SCREEN AND COARSE CONTAINMENT SCRON MANUFACTURED FROM STAMISS STEa
6. HLTRAVON BASKET HOLDS BOOM OF ABSORBENT MEDIA TO CAPTURE HYDROCARBONS BOOM IS EASILY REPLACED WITHOUT
REMOVmG MOUNTING HAmfARE
7. FTLTRATm BASKET LOCATION IS DIRECTLY UNDER
MAmXE FOR EASY MAINTENANCE
I
I
I
I 1^ CLEAN
^aS^m ENVIRONMENTAL SERVICES. INC
Includes the Patented 'Shelf System'
Higher Storage Capacity, Same 15 Minute Service Time
Specifications
Model # Treatment
Flow (CFS)
Bypass Flow
(CFS)
BC-RGISB-22-24 2.4 Unlimited
Advantages
• 5 Year Warranty
• Works in Any Size Catch Basin
• No Nets or Geofabrics
• 15+ Year User Life
• Meets LEED Requirements
• Patented Shelf System
• Fiberglass Construction
• 74%-86% Removal of TSS
• 54% Removal of Oils & Grease
57%-71% Removal of
Phosphorus
56%-60% Removal of
Nitrogen
Operation Bypass Flow Path
Treatment Flow Path
Curb Opening
Bypass Weir
Patented Shelf
System
Manhole Cover
1^— BioSorb
Hydrocarbon
Boom
- Debris
Retention
Screen
Coarse
^creen
^^^^^^^
- Medium
Screen
- Fine
Screen
Round Curb Inlet Filter (R GISB)
Media F/7ter
The Bio Clean Round Curb Inlet Media Filter (RGISB-MF) is an
advanced level filtration device designed with a multi-layered
media filter for increased removal efficiencies.
Performance
• 85% Removal of Fine TSS
• 69% Removal of Dissolved Phosphorus
• 95% Removal of Copper
• 87% Removal of Lead
• 95% Removal of Zinc
• 90% to 95%. Removal of Oils & Grease
• 68% Removal of Fecal Coliform (bacteria)
PROVEN STORMWATER TREATMENT TECHNOLOGY
Operation
Treatment Flow Path
ode
Installation & Maintenance App/zcat/on
Vac Truck Hose
Cleaned Without
Catch Basin Entry
Cleaned Easily
With Vac Truck
15 Minute
Service Time
Parking Lots
Roadways
•
•
• Easily Removed without Entry into Basin
Approyals
SAN FRANCISCO
City and County
of Honolulu
County of
San Diego
ESTUARY
PARTNERSHIP
Meets Full
Capture
Requirements
2972 San Lu;s Rey Rd
Oceanside, CA 92058
p 760.433.7640 f 760.433.3176
www.BioCleanEnvironmental.com
BfCLEAN
Curb Inlet Basket
I. Specifications
Coverage: The curb inlet basket provides full coverage of inlets such that all catch basin influent, at rated flows, is
conveyed to the filter. The filter will retain all windblown and swept debris entering the drain.
Shelf System: The filter basket is located in the catch basin directly beneath a manhole opening for direct
service/access from the manhole. The filter provides a shelf system made of UV protected marine grade fiberglass
to direct water flow from the curb inlet to the filter, which is located directly under the manhole.
Non-Corrosive Materials: All components of the filter system, including mounting hardware, fasteners, support
brackets, filtration material, and support frame are constructed of non-corrosive materials (316 stainless steel, and
UV/marine grade fiberglass). Fasteners are stainless steel. Primary filter mesh is 316 stainless steel welded
screens. Filtration basket screens for coarse, medium and fine filtration is x 1 /^"expanded, 10x10 mesh, and
35 x 35 mesh with optional 50 x 50 mesh and 200 x 200 mesh, respectively. No polypropylene, monofilament
netting or fabrics shall be used in the products.
Durability: Filter (excluding oil absorbent media) and support structures are of proven durability, with an expected
service life of 10 to 15 years. The filter and mounting structures are of sufficient strength to support water,
sediment, and debris loads when the filter is full, with no slippage, breaking, or tearing. All filters are warranted for a
minimum of five (5) years.
Oil Absorbent IVIedia: The Filter is fitted with an absorbent media for removal of petroleum hydrocarbons from
influent, and so placed in the filter assembly to treat influent at rated flow. Absorbent media is easily replaceable in
the filter, without the necessity of removing fixed mounting brackets or mounting hardware.
Overflow Protection: The drain filter is designed so that it does not inhibit storm flows entering the curb inlet, or
obstruct flow through the catch basin during peak storm flows.
Filter Bypass: Water will not bypass the filter at low flows, nor bypass through attachment and inlet contact
surfaces at low flows.
Pollutant Removal Efficiency: The filter is designed to capture high levels of trash and litter, grass and foliage,
sediments, hydrocarbons, grease and oil.
POLLUTANT Curb Inlet Basket
Trash & Litter 90 to 95%
Oil & Grease 54 to 96%
Sediments/TSS 93.54%
Organics 79.3%
Total Nitrogen 65 to 96%
Total Phosphorus 71 to 96%
Non-Scouring: During heavy storm flows or other flows that bypass the filter, the filter screen design prevents
washout of debris and floatables in the filter basket.
Filter Removal: The filter basket is readily removable from the mounting/support frame for maintenance or
replacement. Removal and replacement of filter screens is accomplished without the necessity of removing
mounting bolts, support frames, etc., but by lift out through the manhole.
II. Installation
Installation: The filter will be securely installed in the catch basin or curb inlet opening, with contact surfaces
sufficiently joined together so that no filter bypass can occur at low flow. All anchoring devices and fasteners are
installed within the interior of the drain inlet. The filter basket is located in the catch basin directly beneath a
manhole opening for direct service/access from the manhole. The filter system provides a shelf system to direct
water flow from the inlet to the filter, which is located under the manhole.
Installation Notes:
1. Bio Clean Environmental Services, Inc notes the Curb Inlet Basket shall be installed pursuant to the
manufacturer's recommendations and the details on this sheet.
2. The patented shelf system shall provide coverage of entire inlet opening, including inlet wing(s) where
applicable, to direct all flow to basket(s).
3. Attachments to inlet walls shall be made of non-corrosive hardware.
4. Shelf system shall be installed so that filtration basket is located under manhole access.
5. For the Continuous Curb Inlet Basket(No Shelf System), install bracket under curb opening and hang basket on
bracket
III. Maintenance
Maintenance: The filter is designed to allow for the use of vacuum removal of captured materials in the filter
basket, serviceable by centrifugal compressor vacuum units without causing damage to the filter or any part ofthe
mounting and attachment hardware during normal cleaning and maintenance. Filters can be cleaned and
vacuumed from the manhole-opening. Entering the catch basin to clean the filters is not necessary.
Maintenance Notes:
1. Bio Clean Environmental Services, Inc. recommends cleaning and maintenance ofthe Curb Inlet Basket a
minimum of four times per year or following a significant rain event that would potentially accumulate a large
amount of debris to the system. The hydrocarbon boom should be replaced a minimum of twice per year or at
each service as needed.
2. Any person performing maintenance activities that require entering the catch basin or handle a toxic substance
have completed the proper training as required by OSHA.
3. Remove manhole lid to gain access to inlet filter insert. The filter basket should be located directly under the
manhole lid. Under normal conditions, cleaning and maintenance ofthe Curb Inlet Basket will be performed
from above ground surface.
4. Special Note: entry into an underground manhole, catch basin and stormwater vault requires training in an
approved Confined Space Entry Program.
5. Remove all trash, debris, organics, and sediments collected by the inlet filter insert. Removal of the trash and
debris can be done manually or with the use of a vector truck. Manual removal of debris may be done by lifting
the basket from the shelf and pulling the basket from the catch basin and dumping out the collected debris.
6. Any debris located on the shelf system can be either removed from the shelf or can be pushed into the basket
and retrieved from basket.
7. Evaluation of the hydrocarbon boom shall be performed at each cleaning. If the boom is filled with
hydrocarbons and oils it should be replaced. Removed boom by cutting plastic ties and remove boom. Attach
new boom to basket with plastic ties through pre-drilled holes in basket.
8. Place manhole lid back on manhole opening.
9. Transport all debris, trash, organics and sediments to approved facility for disposal in accordance with local and
state requirements. The hydrocarbon boom with adsorbed hydrocarbons is considered hazardous waste and
need to be handled and disposed of as hazardous material. Please refer to state and local regulations for the
proper disposal of used motor oil/filters.
10. Following maintenance and/or inspection, the maintenance operator shall prepare a maintenance/inspection
record. The record shall include any maintenance activities performed, amount and description of debris
collected, and condition of filter. The owner shall retain the maintenance/inspection record for a minimum of
five years from the date of maintenance. These records shall be made available to the governing municipality
for inspection upon request at any time.
11. Any toxic substance or item found in the filter is considered as hazardous material can only be handled by a
certified hazardous waste trained person (minimum 24-hour hazwoper).
BIO CLEAN M
ENVIRONMENTAL SERVICES, INC.^^F
P 0 Box 869, Oceanside, CA 92049
(760 433-7640 Fax (760) 433-3176
www.biocleanenvironmental.net
Attachment E
Post-Construction BMP Exhibit
BIORETENTION / DETENTION FACILITY DETAIL LEGEND
.//
VEGCTATCD SVULE
nWIUGE IMNMEMEW *REA
«PPHKD LOUnON
LOT 13 BIORETENTION / DETENTION FACILITY DETAIL
SUSMP CALCULATIONS
Row-Through Plant«r
Flow-Thraugli PlanUr
Fkwr—ThRMgh Plantar
Flow—Through Plantar
Row-Through Ptantor
Flow-Through Plantar
Flow-Through Plontor
Flow-Through Plantar
Flew—Through Plantar
Flow-Through Plantar
0.05
0.02
BROOKS PRODUCIS
3F t3»r Hooa we
ELfMmW 1SBA
30' , 15' , 0
SCALE; 1* = 30' CCMNECT TO CURB M£T AT MES MK PER DK 480-4
PnB>AnB} BY:
VALLEY ST. & OAK AVE.
CARLSBAD, CAUFORNIA
PRELIMINARY SWMP EXHIBIT
PUW PflEPMED or-. wifciwmY amuti CWgWff; WlTT-7QII«lgL MC
PHONE f MS-*III-IIIM
BHP WmS:
1. THESE eUPS WE UWCHTDRr TO BE HSTMmi PER ItWUFACTUREie ffilXMKNIUTKMS OR THESE PUWS. 2. NO CHMOCS TO THE PROPOSED BHP5 ON THS SHEH MTHOIJT Pim APPinWL F^ THE cnv ENONEER. 3. NO SUBSTmiTKMS TO THE MMERW. OR TVPES OR PUWIHG TYPES WTHOUT PRK» APPROWL FROM THE CRY EMONEER 4. NO OCCUnWCr m BE CmflED UNIH. TIC cnv MS>ECnQH SWF Hts ICPECTED THE PROJECT FOR MTROPRHTE BV CONSTRUCTION Htt •STJUAnON. 5. REFER TD WWIENHKC MaiEEUEHT DOCUMENT. B. SEE PKWECT SMIP FDR ADOTIONM. MFOnHTKM.
BMP TABLE
mBOL CABW NO. DRWrnQ NO SHSTNOfS) FKOJENCV
HTOROMODIFICATION & TREATMENT COVTROL
LOW IMPACT DESIGN (LI.D.)
SOURCE CONTROL
30' _ 15'^ 30'
SCA1£: 1" - 30"
PETER M. BERNARD. P.E. R-C.E. Ho.
REVISION DESCRIPTION OTHER MfmtH
ENGIMEERING DEPARTWEMT
T BHP SITE PLAN
VALLEY 17
BMP MAP
GLEN K. VAN PESKI
ENPWEERING UANAGEB PE 41204 ECTRES 3/31/15 DATE
om BY: _ CHKD BY; _ RVW BY; -
PROJECT NO.
CT 12-07