HomeMy WebLinkAboutCT 05-19; CARLSBAD MEDICAL VILLAGE; STORM WATER MANAGEMENT PLAN; 2006-09-06^9 RECEIVED
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STORM WATER MANAGEMENT PLAN B . B-i^C^Kj
FOR / / .
CARLSBAD MEDICAL VILLAGE I ^5/ T-O / O (jc^
CT 05-19
PUD 05-05
SDP 05-13
City of Carlsbad
Prepared By
Partners Planning and Engineering
15938 Bernardo Center Drive
San Diego, CA 92127
(858) 376-3444
For
Carlsbad Medical Village, L.P.
9225 Dowdy Drive, Suite 106
San Diego, CA 92126-6364
September 6,2006
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TABLE OF CONTENTS
INTRODUCTION
1. Project Description ,
1.1. Hydrologic Unit Contribution ,
1.2. Beneficial Use
1.2.1. Inland Surface Waters ,
1.2.2. Groundwater ,
2. CHARACTERIZATION OF PROJECT RUNOFF
2.1. Expected Pollutants from the Project Area ,
2.2. Pollutants of Concern ,
2.3. Conditions of Concern ,
3. MITIGATION MEASURES TO PROTECT WATER QUALITV
3.1. Construction BMPs ,
3.2. Post-construction BMPs ,
3.2.1. Site Design BMPs
3.2.2. Source Control BMPs
3.2.3. Treatment Control
3.2.3.1. FloGard™ +PLUS Storm Water Filtration System,
3.2.3.2. Triton™ TDAMPK Filtration System
3.2.3.3 Vegetated Swales
3.2.4. Target Pollutants and Proposed BMPs
4. OPERATION AND MAINTENANCE PROGRAM
4.1. Source Control BMPs
4.1.1 Hazardous Material Storage
4.1.2 Trash Storage
4.1.3 Efficient Irrigation System
4.1.4 Inlet / Catch Basin Tiles
4.1.5 Good Housekeeping
4.2 Treatment Control BMPs
4.2.1 FloGard™ +PLUS Storm Water Filtration System
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4.2.2 Triton™ TDAMPK Filtration System.
4.2.3 Vegetated Swales
5.0 Fiscal Resources
6.0 Conclusions
ATTACHMENTS
A. Vicinity Map
B. Project Map
C. Calculations
D. Appendix
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INTRODUCTION
The Storm Water Management Plan (SWMP) requirenient is required under the City of
Carlsbad's Storm Water Management and Discharge Control Ordinance. The purpose of this
SWMP is to address the water quality impacts from the proposed improvements for the Carlsbad
Medical Village located in the City of Carlsbad. Best Management Practices (BMPs) will be
utilized to provide a long-term solution to water quality. This SWMP is also intended to ensure
the effectiveness of the BMPs through proper maintenance that is based on long-term fiscal
planning. The SWMP is subject lo revisions as needed by the Engineer.
1. PROJECT DESCRIPTION
The proposed developnient includes five (5) office buildings with associated parking,
landscaping and hardscape. The project site is currently undeveloped. The project site is located
south of Carlsbad Village Drive and east of Interstate 5. Access to the site occurs off Carlsbad
Village Drive. See Attachment 'A' for Vicinity Map.
1.1 Hydrologic Unit Contribution
The proposed Carlsbad Medical Village is located in the Encinas Hydrologic Area (HA 904.40)
ofthe Carlsbad Hydrologic Unit. The project site is currently undeveloped. The runoff from the
undeveloped site sheet flows east to west towards the westerly property line and onto the
adjacent properties to the west. The runoff from the site ultimately drains to the Pacific Ocean.
The developed site discharges a total of 1.0 cfs to the adjacent properties to the west and 12.2 cfs
to Carlsbad Village Drive. The existing site discharges 9.0 cfs to the adjacent properties to the
west. The project site design includes below ground culverts to be utilized for storm water
detention to reduce post-development runoff to below pre-existing levels. See Section 2 for a
basin break down and Attachment C for calculations.
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1.2 Beneficial Uses
The beneficial uses for the hydrologic unit are included in Tables 1.1 and 1.2. These tables have
been extracted from the Water Quality Control Plan for the San Diego Basin.
MUN - Municipal and Domestic Supply: Includes uses of water for comniunity. military, or
individual water supply sysiems including, but nol limited lo, drinking water supply.
RECl - Contact Recreation: Includes uses of water for recreational activities involving body
contact wilh waler, where ingestion of water is reasonably possible. These uses include, but are
not limited lo, swimming, wading, water-skiing, skin and SCUBA diving, surfing, white waler
activities, fishing, or use of natural hot springs.
REC2 - Non-Contact Recreation: Includes the uses of waler for recreation involving proximity
to waler, bul not normally involving body conlacl with waler, where ingestion of water is
reasonably possible. These uses include, bul are not limiled lo, picnicking, sunbathing, hiking,
camping, boating, tide pool and marine life study, hunting, sightseeing, or aesthetic enjoyment in
conjunction with the above activities.
WILD - Wildlife Habitat: Includes uses of water lhal suppori terrestrial ecosystems including,
but nol limiled lo, preservation and enhancement of terrestrial habitats, vegetation, wildlife, (e.g.,
mammals, birds, reptiles, amphibians, invertebrates), or wildlife waler and food sources.
WARM - Warm Freshwater Habitat: Includes uses of waler lhal suppori warm waler
ecosystems including, bul nol limited lo, preservation or enhancement of aquatic habitats,
vegetation, fish or wildlife, including invertebrates.
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1.2.1 Inland Surface Waters
Inland surface waters have the following beneficial uses as shown on table 1.1
able 1.1 Beneficial Uses for Inland Surface Waters Hydrologic
Unit^
Nuniber
MUN RECI REC2 WARM WILD
904.40 4-0 X X X
1.2.2 Groundwater
Exisling beneficial use of groundwaier in the Carlsbad Hydrologic Unil (904.40) includes
municipal and domestic supply. This beneficial use will nol be impaired or diminished due to
the construction and operation of this projeci.
Table 1.2 Beneficial Uses for Groundwater
Hydrologic
Unit Number
MUN
904.40 +
* Excepted from Municipal
X Existing Beneficial Use
0 Potential Beneficial Use
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2. CHARACTERIZATION OF PROJECT RUNOFF
The runoff from the undeveloped site sheet fiows east lo wesl towards the westerly property line
and onto the adjacent properties to the west. The runoff from the site ultimately drains lo the
Pacific Ocean. The majority of the surface runoff generated on-site as well as a majority ofthe
off-site run-on will be intercepted by either the proposed curb inlel or lype 'F" catch basin
locaied near the driveway entrance to the projeci site. The proposed curb inlel will be filled wilh
FloGard +PLUS Inseris for water quality purposes. Runoff intercepted by the proposed Type 'F'
catch basin will be directed Ihrough a grass-lined swale for waler quality purposes. The runoff is
then conveyed lo the proposed below ground detention faciiily. The on-site storm drain system
will be designed to limit the amount of runoff discharged onto Carlsbad Village Road lo 4.0 cfs
at any one lime. As an addilionai BMP, the curb outlet will be fitted wilh a Triton TDAMPK
filler for waler quality purposes. The remainder of the runoff is designed lo drain through
openings in the proposed site screen wall and onto the adjacent properties lo the west. Prior lo
exiling the site, the runoff will be directed Ihrough eiiher a grass-lined swale or a grass-lined
strip. In addition, a portion of the runoff directed towards the wesl will be directed lo grated
catch basins fitted wilh FloGard +PLUS Inserts for waler quality purposes.
Table 2.1 identifies the hydrologic/hydraulic characteristics for each basin. See Attachment "B'
for project BMP map. See Attachment 'C for calculations.
Table 2:1
BASIN Tolal
Area
Tc QIOO QWQ*
Exisling
Basin XA
3.6 AC 10.5
Min
9.0 cfs 0.41 cfs
Developed
Basin A
3.3 AC 7.4
Min
12.2 cfs 0.44 cfs
Developed
Basin B
0.3 AC 11.4
Min
1.0 cfs 0.04 cfs
* Based on 85 % percentile storm wilh 1=0.2 in/hr
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2.1 Expected Discharges
There was no sampling dala available for the exisling site condiiion. In addition, the project is
nol expected lo generate significant amounts of non-visible pollutants. However, the following
constituents are commonly found on similar developments from parking lol as idenlified in Table
2 ofthe Cily of Carlsbad's Standard Urban Storm Waler Mitigation Plan:
Sediment discharge due to conslruclion activities.
Oxygen demanding substances from landscaping.
Trash and debris.
Nutrients from fertilizers.
Pesticides from landscaping.
Oil and grease from parked cars.
Heavy metals from parked cars.
2.2 Pollutants of Concern
According to the California 2002 303d list published by the San Diego Regional Water Quality
Control Board, there are currently no listed impaired waler bodies associated wilh the Encinas
Hydrologic Area of the Carlsbad Hydrologic Unit (HA 904.40).
2.3 Conditions of Concern
Cominon impacts lo the hydrologic regime resulting from similar developments include
increased runoff volume and velocity; reduced infillralion; increased flow frequency, duration
and peaks; faster time lo reach peak flow; and waler quality degradation. The project site is
approximately 0.12% of the watershed area (3.6 acres versus 2,997 acres). The projeci area
consists of soil group A with a mininium saturated infiltration rate of 6.3 in/hr. See Figure 2.1
for site location and soil type. The proposed developmenl for the Carlsbad Medical Village
includes five (5) office buildings wilh associated parking, landscaping and hardscape. The
proposed projeci will increase the impervious area wilhin the project site by approximately
76,000 square feet.
The proposed project will mitigate the pollutants of concern as follows: The majority of runoff
generated on-site will be directed through either a curb inlet fitted with the FloGard +Plus
Slorm Waler Filtration System or a grass-lined trapezoidal channel prior to entering the on-site,
below ground detention facility. The on-site detention facility is designed to reduce the post-
development runoff to below pre-existing levels. Prior to exiling the site, the discharged runoff
from the detention facility is then directed through a curb outlet fitted with the Triton
TDAMPK Filtration System as a redundant BMP for waler quality purposes. The remainder of
the runoff on-site will be directed through eiiher a grass-lined trapezoidal channel or a vegetated
strip or directed lo a grated catch basin fitted with the FloGard +Plus'" Slorm Waler Filtration
System prior lo exiling the site
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3.0 MITIGATION MEASURES TO PROTECT WATER QUALITY
To address water quality for the projeci. BMPs will be implemented during construction and
post-construction.
3.1 Construction BMPs
A detailed descriplion ofthe construction BMPs has been developed wilh the Grading Plan
Engineering. In addition to the BMPs listed on the Projeci Grading Plans, the following BMPs
may also be used as required to the satisfaction of the City Engineer.
• Silt Fence • Desi hing Basin
• Fiber Rolls • Gravel Bag Berm
• Street Sweeping and Vacuuming • Sandbag Barrier
• Storm Drain Inlet Protection • IVIaterial Delivery and Storage
• Stockpile Management • Spill Prevention and Control
• Solid Waste Management • Concrete Waste Management
• Stabilized Construction Entrance/Exit • Water Conservation Practices
• Dewatering Operations
• Vehicle and Equipment Maintenance • Permanent Revegetation of all disturbed uncovered
areas
Erosion Control Mats and Spray-on Applications
Construction BMPs for this projeci will be selecled, construcied, and maintained so as to comply
wilh all applicable ordinances and guidance documenls.
A Storm Waler Pollution Prevention Plan (SWPPP) will be prepared separately to address the
pollution prevention measures that will be taken during conslruclion.
3.2 Post-construction BMPs
3.2.1 Site Design BMPs
The project site is currently undeveloped. All dislurbed areas will be either paved or landscaped.
There will be no areas lefl bare. Landscaping will consist of both native and non-native plants.
The goal is to achieve plant establishment expeditiously to reduce erosion. The irrigation system
for these landscaped areas will be monitored to reduce over irrigation.
The following Site Design BMP concept was nol implemented inlo the site design:
- Conserve Natural Areas. The entire site will be mass graded in order to accommodale the
proposed site design. Therefore, the exisling native trees and shrubs cannoi be preserved.
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The following Specific BMPs will be iniplemenled inlo the projeci design:
- Maximize the permeable area. Landscaped areas located along the exterior of the project
limits, adjacent lo the proposed buildings and wilhin parking lol islands have been
included in the site design.
- Construct streels, sidewalks and parking lol aisles lo the minimum widths necessary,
provided that public safely and a walk able environment for pedestrians are not
compromised. The interior access drives have been designed to meet the minimum
allowable widths.
- Minimize the use of impervious surfaces, such as decorative concrele, in the landscape
design. The landscape site design utilizes minimal impervious surfaces.
- Natural drainage systems are included in the project site design where constraints allow.
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Table 3.2.1.1 Site Design BMPs
1 Included
Design
Concept
Technique Specific BMP yes no
Siie Design
Concept 1
Minimize Urban Siie Design
Concept 1 Runoff
Siie Design
Concept 1
Maximize the permeable area. X
Siie Design
Concept 1
Incorporate landscaped buffer areas between
sidewalks and streets.
X
Siie Design
Concept 1
Maximize canopy interception and water
conservation by preserving exisling native trees
and shrubs, and planting additional native or
drought tolerant trees and large shrubs.
X
Siie Design
Concept 1
Use natural drainage systems. X
Siie Design
Concept 1
Where soils conditions are suitable, use perforated
pipe or gravel filtration pits for low flow
infillralion.
X
Siie Design
Concept 1
Conslrucl onsite ponding areas or retention
facilities lo increase opportunities for infiltration
consistent with vector control objectives.
X
Siie Design
Concept 1
Other comparable and equally effective site design
concepis as approved by the Co-Permittee (Note:
Additional narrative required to describe BMP and
how it addresses Site Design concept).
X
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Table 1. Site Design BMPs (Cont.)
"" 1 [ Included
Design
Concept
'cchnique Specific BMP ycs no
Site
Design
Concept 1
Minimize Impervious Site
Design
Concept 1 Footprint Vlaximize the permeable area. X
Site
Design
Concept 1 Footprint
Conslruct walkways, trails, patios, overflow
parking lots, alleys, driveways, low-traffic streels
and other low -Iraffic areas wilh open-jointed
paving malerials or permeable surfaces, such as
pervious concrete, porous asphalt, unit pavers, and
granular materials.
X
Site
Design
Concept 1 Footprint
Construct streets, sidewalks and parking lot aisles
lo the minimum widths necessary, provided that
public safely and a walk able environment for
pedestrians are not compromised.
X
Site
Design
Concept 1 Footprint
Reduce widths of streel where off-street parking is
available.
X
Site
Design
Concept 1 Footprint
Minimize the use of impervious surfaces, such as
decorative concrete, in the landscape design.
X
Site
Design
Concept 1 Footprint
Olher comparable and equally effective site design
concepts as approved by the Co-Permittee (Note:
Addilionai narrative required describing BMP and
how il addresses Site Design concept).
X
Site
Design
Concept 1
Conserve Nalura
Areas
IIIIBI^^Bi^BIBllliiilllrtllB Site
Design
Concept 1
Conserve Nalura
Areas Conserve natural areas. X
Site
Design
Concept 1
Conserve Nalura
Areas
Maximize canopy interception and water
conservation by preserving existing native trees
and shrubs, and planting additional native or
drought tolerant trees and large shrubs.
X
Site
Design
Concept 1
Conserve Nalura
Areas
Use natural drainage systems. X
Site
Design
Concept 1
Conserve Nalura
Areas
Olher comparable and equally effective site design
concepts as approved by the Co-Permittee (Note:
Additional narrative required describing BMP and
how it addresses Site Design concept).
X
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Table 1. Site Design BMPs (Cont.)
Included
Design
Concept
Technique Specific BMP yes no
Site
Design
Concept 2
Minimize
Connected
Impervious
(DCIAs)
Directly
Areas
Residential and commercial sites must be designed
lo contain and infiltrate roof runoff, or direct roof
runoff lo vegetative swales or buffer areas, where
'easible. .
X
Where landscaping is proposed, drain impervious
sidewalks, walkways, trails, and patios into
adjacent landscaping
X
Increase the use of vegetated drainage swales in
lieu of underground piping or imperviously lined
swales.
Rural swale system: streel sheet flows lo vegetated
swale or gravel shoulder, curbs at street corners,
culverts under driveways and streel crossings
Urban curb/swale system:
periodic swale inlets
swale/biofilter.
street slopes lo curb;
drain to vegelaled
Dual drainage system: First flush captured in
street catch basins and discharged to adjacent
vegelaled swale or gravel shoulder.
X
X
X
X
Design driveways wilh shared access, flared
(single lane al slreet) or wheel strips (paving only
under tires); or, drain into landscaping.
Uncovered temporary or guest parking on privale
residential lots may be paved with a permeable
surface, or designed to drain inlo landscaping.
Where landscaping is proposed in parking areas
incorporate landscape areas inlo the drainage
design.
X
X
Overflow parking (parking stalls provided in
excess of the Co-Permittee's minimum parking
requirements) may be constructed wilh permeable
paving.
Olher comparable and equally effective design
concepts as approved by the Co-Permiltee (Note:
Addilionai narrative required describing BMP and
how it addresses Site Design concept).
X
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V.2 SOURCE CONTROL BMPs
Table 2. Source Control BMPs
BMP Name
Check One
Included
Not
Applic
able
If not applicable, state
brief reason
Non-Structural Source Control BMPs
1) Education for Property Owners, Operators,
Tenants, Occupants, or Employees X
2) Activitv Restrictions X
3) Irriualion System and Landscape Mainlenance X
4) Common Area Litter Control X
5) Streel Sweeping Private Streels and Parking
Lots X
6) Drainage Facility Inspection and Mainlenance X
Structural Source Control BMPs
7) Stenciling and Signage X
8) Landscape and Irrigation System Design X
9) Protect Slopes and Channels X
Provide Community Car Wash Racks X
No comniunity car
wash racks on this site
Properly Design:
1 e as — —
Fueling Areas X
No fueling areas on
this site
Air/Water Supply Area Drainage X
No air/water supply
area drainage on this
site
10) Trash Storage Areas X
Loading Docks X
No loading docks on
this site
Maintenance Bays X
No mainlenance bays
on this site
Vehicle and Equipmenl Wash Areas X
No wash areas on this
site
Outdoor Material Storage Areas X
No ouldoor malerial
storage areas on this
site
Ouldoor Work Areas or Processing Areas X
No outdoor work areas
on this site
Provide Wash Water Controls for Food
Preparation Areas X
No wash water areas
on this site
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1. EDUCATION FOR PROPERTY OWNERS, OPERATORS, TENANTS, OCCUPANTS
AND EMPLOYEES
Carlsbad Medical Village. LP shall provide a training package to all lessee, venders and
contractors who will be performing maintenance or conslruclion wilhin the project site including
but not limited to:
- Lessee
- Landscape Mainlenance Company
- HVAC Conlraclor
- Building Mainlenance Providers
- Trash Collection Company
Carlsbad Medical Village, LP shall provide a training package al such lime when the lessee
occupies their specific space. Venders and conlractors shall be provided a training package prior
lo the conimencenieiit of scope of work. The training material package shall include al a
minimum the following items:
- Color Exhibit showing the storm water layout and various components of the systein.
- City of Carisbad Handout
- This manual
2. ACTIVITY RESTRICTIONS
Carlsbad Medical Village, LP shall develop use restrictions for all occupants/tenants ihrough
lease lerms. The use restrictions include, bul are not limited lo, no ouldoor storage of materials
and no on-site car washing unless facilities available to capture all rinsate from the car wash.
3. IRRIGATION SYSTEM AND LANDSCAPE MAINTENANCE
Carlsbad Medical Village, LP shall ensure to maintain all landscaping and irrigaiion facilities.
The operational and maintenance needs of the landscaping are:
• Keep landscape areas in a neat and orderly condiiion.
• Pick up garbage left within landscape areas.
• Removal ofall freshly trimmed landscape items and natural deposited items such as annual
leaves and disposal off-site per governing codes.
• Whenever possible use foliar/or soil nutrient lesling before applying fertilizers to verify
applicalion liming and rate.
• Use a higher percentage of fertilizers contain slow -release N, such as IBDU and sulfur-
coated urea. Be aware that organics (i.e. bone meal) and some slow-release fertilizers are
dependent on microbial activity for the release of nitrogen; therefore low soil temperature will
decrease the release of nitrogen available for plant uptake.
• If highly soluble-N fertilizers are used, apply smaller amounts on a more frequent basis.
• Incorporate fertilizer directly into the soil around the plant, where possible, to minimize
potential surface runoff.
• Although fertilizers must be watered in soil in order lo work, the watering in should occur
wilh light irrigaiion just after applicalion. Due lo the unpredictability of rain events, il is
recommended that fertilizers nol be applied in the rain or on the same day that rain is expected.
• Irrigaiion application rales and schedules should be adjusted to minimize surface runoff,
especially immediately following the application of a fertilizer.
• Immediately clean up any spill of fertilizers using dry methods of clean up such as by
sweeping or scooping up material.
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• Fertilizer storage facilities should be covered and have a impermeable foundation so that
potential spills cannoi runoff inlo surface water or leach inlo groundwater systems.
• Fertilizers must be securely covered in the vehicle before being transported lo application
sites lo avoid spillage or loss during transport.
• Weed Control. Weeds will be removed ihrough mechanical means. Herbicide will nol be
used because these chemicals may impact the water quality monitoring.
• Thoroughly investigate and consider all leas toxic pest management practices.
• Mainlain a complete list of all pesticides used and the use site.
• Use pesticides only according to label instructions.
• Consider weather conditions lhal could affect applicalion. For example, wind conditions
affect spray drift; rain my wash pesticides off of leaves.
• Do not apply pesticides where there is a high chance of movement into water bodies; for
example, they should not be applied near wetlands, streams, lakes, ponds or storni drains unless
it is for an approved maintenance activity.
• In most cases, triple-rinse empty containers before disposal. Particular infomiation on the
proper disposal of the pesticide and ils conlainer can be found o the label.
• Never clean or rinse pesticide equipment and conlainers in the vicinity of storni drains or
olher open water areas.
• Store pesticides in areas wilh cement floors and in areas insulated from temperature extremes.
• Secure chemicals and equipment during transportation lo prevent tipping or excess jarring.
• Pesticides must be transported completely isolated from people, food and clothing for
example in the bed of the truck rather lhan in the passenger compartment.
• Inspect pesticide equipmenl, storage containers and transportation vehicles frequently.
• Develop a plan for dealing with pesticide spills and accidents.
• Unless their safety is compromised, workers must immediately clean up any cheniical spills
according to label instructions and nolify the appropriate supervisors and agencies.
• Pesticide applications on public property, which lakes place on school grounds, parks, or olher
public right-of -way where public exposure is possible, shall be posted wilh warning signs.
• Broken sprinkler heads and/or lines will be repaired or replaced in a timely manner.
• Periodic lesling of all irrigation stations to verify if each landscape area is getting the correct
amount of water.
• Periodic testing of all flow reducers and/or shutoff valves to verify in good working order.
Hazardous Waste
Suspected hazardous wastes will be analyzed to determine disposal options. Hazardous wastes
generated onsite will be handled and disposed of according lo applicable local, slale, and federal
regulations. A solid or liquid waste is considered a hazardous waste if it exceeds the criteria
listed in the CCR, Title 22, Article 11.
4. COMMON AREA LITTER CONTROL
Carisbad Medical Village, LP shall be responsible lo implement trash management and litter
control procedures in the common areas aimed al reducing pollulion of drainage water. Trash
receptacles shall be placed along traveled paths. Ash urns shall be placed at areas where
smoking is allowed. The responsibilities shall include litter patrol, emptying of trash receptacles
in common areas and noting trash disposal violations.
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5. STREET SWEEPING PRIVATE STREETS AND PARKING LOTS
Carisbad Medical Village, LP shall be responsible to sweep the parking lots and private access
drives.
6. BMP MAINTENANCE
Carisbad Medical Village. LP shall be responsible for iniplenientation of each non-structural
BMP and scheduled cleaning and/or maintenance of all non-structural BMP facilities.
Detention Basin:
The Detention Basin shall be visually inspected on a monthly basis for proper functionality. The
basin shall be cleaned on a yearly basis. The basin shall have all trash and contaminates
removed and disposed of off site per the Cily of Carisbad Municipal code. The basin shall be
inspected for worn or damaged parts. All worn or daniage parts shall be replaced immediately.
Inlet Inseris:
Hydro-carbon filters shall be visually inspected for proper functionality. The filters shall be
replaced per manufacturer's specifications.
General Storni Drain:
All storm drain facilities including inlets, catch basins, pipes. Detention Basin, inserts shall be
visually inspected yearly for damaged or worn parls.
7. MS4 STENCILING AND SIGNAGE
All slorm water boxes (catch basins, inlets, etc) shall be stamped or stenciled with prohibitive
language (e.g., "No Dumping -1 Live Downstream") and/or graphical icons to discourage illegal
dumping satisfactory lo the City Engineer. If required, the stamping shall be in Spanish as well.
The stamping or stenciling shall be maintained lo remain legible.
8. LANDSCAPE AND IRRIGATION SYSTEM DESIGN
Employ rain shutoff devices lo prevent irrigaiion during and after precipitation events.
• Design irrigation systems to each landscape area's specific water requirements.
• Use flow reducers or shutoff valves triggered by a pressure drop to control water loss due lo
broken sprinkler heads or lines.
• The liming and application methods of irrigation water shall be designed lo minimize the
runoff of excess imgation waler into the MS4.
• Other comparable, equally effective, methods to reduce irrigation water runoff.
• Preparalion and implementation of a landscape plan consistent with the Co-Permittee's waler
conservation ordinance, which may include the use of water sensors, programmable irrigation
times (for short cycles), etc.
• Preparalion and implementation of a landscape plan that:
- Utilizes plants wilh low irrigation requiremenls (for example, native or drought tolerant
species).
- Groups plants with similar waler requiremenls in order to reduce excess irrigaiion runoff
and promote surface infiltration.
- Use mulches (such as wood chips or shredded wood products) in planter areas without
ground cover lo minimize sediment in runoff.
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Partners Planning and Engineering 9/5/2006
- Install appropriate plant materials for the location, in accordance wilh amount of sunlight
and climate, and use native plant material where possible and/or as recommended by the
landscape architect.
- Maintaining or creating a vegetative barrier along the property boundary and interior
watercourses, lo acl as a pollutant filter, where appropriate and feasible.
- Choose plants lhal minimize or eliminate the use of fertilizer or pesticides to sustain
growth.
9. PROTECT SLOPES AND CHANNELS
The operational and maintenance needs lo protect slopes and channels shall be:
Convey runoff safely from the lops of slopes
Avoid disturbing natural channels
Stabilize dislurbed slopes as quickly as possible
Vegetate slopes with native or drought tolerant vegetation
Control and treat flows in landscaping and/or other controls prior lo reaching exisling natural
drainage systems.
Stabilize temporary and permanent channel crossings as quickly as possible, and ensure lhal
increases in run-off velocity and frequency caused by the projeci do nol erode the channel.
Inslall energy dissipaters, such as riprap, at the outlets ofnew slorm drains, culverts, conduits, or
channels lhal enter unlined channels in accordance with applicable specifications to minimize
erosion. Energy dissipaters shall be inslalled in such a way as to minimize impacts to receiving
waters.
Line on-site conveyance channels where appropriate, to reduce erosion caused by increased flow
velocity due to increases in tributary impervious area. The first choice for linings should be
grass or some other vegetative surface, since these materials not only reduce runoff velocities,
bul also provide water quality benefits from filtration and infillralion. If velocities in the channel
are high enough lo erode grass or other vegetative linings, riprap, concrele, soil cement, or geo-
grid stabilization or other alternative.
10. TRASH STORAGE AREAS
The operational and maintenance needs of trash storage areas shall be:
The trash storage area shall be paved with an impervious surface, designed nol lo allow run-on
from adjoining areas.
The trash storage area shall be screened or walled to prevent off-site transport of trash.
Use lined bins or dumpsters lo reduce leaking of liquid waste.
Provide roofs, awnings, or atiached lids on all trash conlainers lo minimize direct precipitation
and prevent rainfall from entering containers.
Pave trash storage areas wilh an impervious surface lo mitigate spills.
Do not locale storm drains in immediate vicinity of the trash storage area.
Post signs on all dumpsters informing users lhat hazardous materials are nol lo be disposed of
therein.
The integrity of slructural elements lhal are subjeci to damage (i.e., screens, covers, and signs)
must be maintained by the owner / operator.
Prepared By P:\dwg\605\605-swmp.doc
Partners Planning and Engineering 9/5/2006
3.2.3 Treatment Control BMPs
As stated in Seclion I11.2.D of the Cily of Carisbad's Standard Urban Storm Water Mitigation
Plan Storni Waler Standards Manual, high priority projects shall include Ireatment control BMPs
designed lo infiltrate, filter and/or treat runoff from the projeci footprint lo one of the "Sizing
Treatment Standards" lisied in Table 3 ofthe Manual. The site design for the Carisbad Medical
Village will utilize the FloGard'" +PLUS Storm Water Filtration System, the Triton™ TDAMPK
Filtration System, vegetated swales and vegetated strips for water quality purposes. Each ofthe
proposed Ireatment control BMPs can cleanse the runoff generated by a storm event wilh a
rainfall intensity of 0.2 inch/hour withoui impeding flow.
3.2.3.1 FloGard™ +PLUS Storm Water Filtration System
The FloGard +PLUS Storm Waler Filtration System places an insert device that contains a
filtering medium (a sorbent) just under the grates of the stormwater system's catch basins or just
below the curb opening of the stormwater system's curb inlets. The waler runoff flows into the
inlet or catch basin, through the filler where the target contaminants are removed, and then into
the drainage system. An example of FloGard™ +PLUS Storm Waler Filtration System is shown
in Figure 3.1. The system effectively filters the firsl flush of stormwater runoff from a storm
event and provides an overflow capability sufficienl to prevent the system from becoming
clogged. Studies show the system is capable of cleansing up to 1.0 cfs of runoff See Figure 3.1
for information from the manufacturer. The sorbent medium is a nonleaching inert blend of
minerals that contain non-hazardous ingredients, as defined by Federal EPA, OSHA and WHO.
3.2.3.2 Triton™ TDAMPK Filtration System
The Triton™ TDAMPK Filtration System places an insert device that contains filler media
cartridges in the opening on the privale side of the curb outlet. The water runoff flows inlo the
opening of the curb outlet, through the filter where the target contaminants are removed, and
then inlo the gutter. An example of Triton™ TDAMPK Filtration System is shown in Figure 3.2.
The system effectively fillers the firsl flush of slorm water runoff from a storni event and
provides an overflow capability sufficient lo prevent the system from becoming clogged. The
filter media cartridges contain non-hazardous ingredients, as defined by Federal EPA and OSHA.
3.2.3.3 Vegetated Swales and Strips
Vegetated swales are vegetated channels that receive directed flow and convey slorm waler.
Vegetated strips are vegetated sections of land over which slorm waler flows as overiand sheet
flow. Pollutants are removed by filtration through the grass, sedimentation, adsorption to soil
particles, and infiltration through the soil. Swales are mainly effective al removing debris and
solid particles, although some dissolved constituents are removed by adsorption onto the soil.
See the "Projeci Post Conslruclion BMP Plan" (Attachment 'B') for a cross-section of the
proposed vegelaled swales.
Prepared By P:\dwg\605\605-swmp.doc
Partners Planning and Engineering 9/5/2006
3.2.3.3.1 Appropriate Applications and Siting Constraints
Vegetated swales should be considered wherever site condilions and climate allow vegetation to
be established and where flow velocities are not high enough lo cause scour. Even where swales
cannoi be sited lo accept directed sheet flow, vegetated areas provide treatment of rainfall and
reduce the overall impervious surface.
Factors Affecting Prcliminary Design:
Vegetated swales have two design goals:
• Maximize treatment
• Provide adequate hydraulic function for flood routing, adequate drainage and scour
prevention. Treatment is maximized by designing the flow of waler Ihrough the swale
to be as shallow and long as site constraints allow. No mininium dimensions are
required for treatment purposes, as this could exclude swales from consideration al
some siles. Swales should also be sized as a conveyance system calculated according lo
City procedures for flood routing and scour. To maximize treatment efficiency, swale
should be designed to be as long (in the direction of flow) and as flal as the site will
allow. No minimum lengths or maximuni slopes are required for treatment purposes.
The area to be used for the strip should be free of gullies or rills that can concentrate
overland flow and cause erosion. Vegetated mixes appropriaie for various climates and
localions will be developed for various climates and locations will be developed by the
project Landscape Architect. Table 3.2.1 summarizes preliminary design factors for
vegelaled swales.
Prepared By P:\dwg\605\605-swmp.doc
Partners Planning and Engineering 9/5/2006
Table 3.2.1: Summar>' Of Bio-filtration Design Factors (Strips And Swales)
Description Applications/Siting Preliminary Design Factors
Swales are vegetated channels that
receive and convey storm water.
Strips are vegetated buffer strips
over which storm water flows as
sheet flow.
Treatment Mechanisms:
• Filtration through the grass
• Sedimentation
• Absorption to soil particles
• Infiltration
Pollutants removed;
• Debris and solid particles
• Some dissolved constituents
• Site conditions
and climate ailow
vegetation to be
established
• Flow velocities
not high enough to
cause scour
Swaies sized as a conveyance
system (per City ofCarlsbad
flood routing and scour
procedures)
Swales sized as a conveyance
system (per City ofCarlsbad
flood routing and scour
procedures)
Swale water depth as shallow
as the site will permit
Strips sized as long (in
direction of flow) and flat as
the site allows
Strips should be free of gullies
or rills
No minimum dimensions or
slope restrictions for treatment
purposes
Vegetation mix appropriate for
climates and location
3.2.4 Target Pollutants and Proposed BMPs
• Nutrients from fertilizers will be treated primarily by practicing and maintaining good
housekeeping procedures and by the proposed FloGard " -i-PLUS Slorm Water Filtration
System, Triton™ TDAMPK Filtration System and vegetated swales as secondary BMPs.
• Trash and debris will be treated by practicing and maintaining good housekeeping
procedures and by the FloGard'" +PLUS Slorm Water Filtration System, Triton
TDAMPK Filtration System and vegetated swales as secondary BMPs.
• Pesticides from landscaping will be treated by practicing and inaintaining good
housekeeping procedures.
• SedimenI discharge due to construction activities will be treated by the use of sill fence,
stockpile management, stabilized conslruclion entrance/exit, erosion control mats and
spray-on applications, gravel bag barriers and permanent revegetation ofall dislurbed
uncovered areas.
• Oxygen demanding substances from landscaping will be treated by practicing and
maintaining good housekeeping procedures.
• Oil and grease from parked cars will be treated by the proposed FloGard -HPLUS Slorm
Waler Filtration System, Triton™ TDAMPK Filtration System and vegetated swales.
• Heavy metals from parked cars will be treated by the proposed FloGard +PLUS Storm
Water Filtration System, Triton'" TDAMPK Filtration System and vegetated swales.
Prepared By
Partners Planning and Engineering
P:\dwg\605\605-swmp.doc
9/5/2006
Debris Trap
Fossil RockTM Pouches
'Ultimate" Bypass
Liner
Support Basket
Catch Basin
(Flat Grate Style)
Cutlet Pipe
TOP VIEW
Fossil Rock Pouches
Outlet Pipe
SIDEVIEW
us PATENT
NOTES:
1. Flo-Gar(l™+PLUS (frame mount) high capacity catch basin
inserts are available In sizes to fit most industty.standard
catch basin sizes and styles (see specifier chart). Referto
the Flo^anl ^»«*PLUS (wall mount) Insert for devices to fit
non-standard or combination style catch basins.
2. Filter insert shall have both an "Initial" filtering bypass and
"ultimate" high-flow bypass feature.
3. Rlter assembly shall be constmcted from stainless steel
(Type 304).
4. Allow a minimum of r-O" of dearance between the bottom
of grate and top of inlet or outlet plpe(s). Refer to the
Flo-Gard™ insert for "shallow" installations.
5. Filter medium shall be Rubberizer!) Installed and mamtained
In accordance with manufacturer recommendations.
FLO-GARD +PLUS
CATCH BASIN FILTER INSERT
(Frame Mount)
FLAT GRATED INLET
KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819
06/04
FIG- 3,1, {
Flo-Gard+Plus Filter
installed
NOTES:
1, Flo-Gard™+PLUS (frame mount) high capacity catch basin
inserts are available in sizes to fit most industry-standard
catch basin sizes and styles (see spedfier chart). Referto
the Flo-Gard'""•PLUS (wall mount) Insert for devices to flt
non-standard or combination style catch basins,
1 Filter Insert shall have both an "initial" filtering bypass and
"ultimate" high-fiow bypass feahjre.
3. Filter assembly shall be constmcted from stainless steel
(Type 304).
4. Allow a ninimum of 2'-0r of clearance between the bottom
of grate and top of inlet or outlet pipe(s). Refer to the
Flo-Gard™ insert for "shallow" installations.
5. Filter medium shall be Rubberizer* inslalled and maintained
in accordance with manufacturer reconmendations.
US PATENT
FLO-GARD™+PLUS
CATCH BASIN FILTER INSERT
(Frame Mount Installation)
FLAT GRATED INLET
KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819
06/04
Attadi to catch basin wall or wall mount bracket assembly Debris Trap
12'
TOP VIEW
Initial (filtering) ^^pa» Gasket.
Support Basket
FRONTVIEW Liner
Catch Basin W^ll
Stainless Steel Debris Trap
Filter Liner
(optional)
Support Basket
US PATENT
NOTES:
1. Flo-GanJ^"tPLUS (curt mount) high capacity catch basin
Inserts are available In sizes to fit most industry-standard
catch basin sizes and styles (see specifier chart). Referto
the Flo-Gard'•''•PLUS (wall mount) insert for devices to fit
non-standard or combination style catch basins.
2. Rlter insert shall have both an "Initlar filtering bypass and
"ultimate" high-flow bypass feature.
3. Rlter assembly shall be constmcted fn>m stainless steel
(Type 304).
4. Allow a minimum of T-O" of clearance between the bottom
of grate and top of inlet or outlet pipe(s). Refer to the
Flo-GartI™ insert for "shallow/' installations.
5. Filter medium shall be Rubberizeiw installed and maintained
in aecordance with manufacturer recommendations.
FLO-GARD™+PLUS
CATCH BASIN FILTER INSERT
(Curb Mount)
CURB INLET
KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819
OBI04
FIG- 3./. 3
CURB INLET-SIDE VIEW
SCALE: NONE
CATCH
BASIN
CURB OPENING
GUTTER
FLOWLINE
FILTER BODY
FILTER BASKET
FOSSIL ROCRJ FILTER
MEDIUM POUCH
FILTER
BODY
3/8" X 3"
ANCHOR BOLT
(3 PER SECTION)
ANCHOR DETAIL
US PATENT
FLO-GARD™+PLUS
CATCH BASIN FILTER INSERT
(Curb Mount-Installation Options)
CURB INLET
KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819
06/04
OPTIONAL RECESSED MOUNT
SCALE: NONE
FLO-GARD+PLUS
(REMOVABLE)
/
FLOATING EDGE
(CURVED UPV\ARD) EXAMPLE: SAN DIEGO REGIONAL STANDARD
CURB INLET TYPE "8" WTERTIGHTSEAL
US PATENT
FLO-GARD™+PLUS
CATCH BASIN FILTER INSERT
(Curb Mount-Installation Options)
CURB INLET - RECESSED MOUNT
KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819
06/04
CATCH
BASIN
: w:. f.'. •'•; • » •: •
••.•!»•: )»•.•:••• ••.^•»'
FILTER BODY
FILTER BASKET
FOSSIL ROCRf FILTER
MEDIUM POUCH
PIPE INLET
PIPE INLET
FLOWLINE
3/8" X 3"
ANCHOR BOLT
(3 PER SECTION)
ANCHOR DETAIL
PIPE INLET-SIDE VIEW
SCALE: NONE
US PATENT
FLO-GARD™+PLUS
CATCH BASIN FILTER INSERT
(Curb Mount-Installation Options)
PIPE INLET
KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819
06/04
HG 3.1 6
FICi-Gar.J-<-F1us Filter
in;tille.1
FloGarcf' +Plus
A multipurpose catch basin insert designed to capture sediment, debris, trash & oils/grease from low (first flush) flows.
A (dual) high-flow bypass allows flows to bypass the device while retaining sediment and larger floatables (debris & trash)
AND allows sustained maximum design flows under extreme weather conditions.
FloGard® -fPlus inserts are available in sizes to fit most industry-standard drainage inlets (...flat grated, combination, curb
and round inlets).
FloGard® +P\us catch basin inserts are recommended for areas subject to silt and debris as well as low to moderate levels
of petroleum hydrocarbon (oiis and grease). Examples of such areas are vehicle parking lots, aircraft ramps, truck and
bus storage yards, corporation yards, subdivision streets and public streets.
standard Filter Fabric Prope
Property
rties*
Test Method Units Value
Mass/Unit Area ASTM D 5261 g/m' (oz/yd"^) 190 (5.6)
Grab Tensile Strength ASTM D 4632 N (Ibs) 890 (200)
Grab Tensile Elongation ASTM D 4632 % 10
Tear Strength ASTM D 4533 N (Ibs) 330 (75)
Puncture Strength ASTM D 4833 N (Ibs) 440(100)
Burst Strength ASTM D 3786 kPa (psi) 3097 (450)
Permittivity ASTM D 4991 sec" 2.14
Flow Rate ASTM D 4491 l/min/nr)*^
(gal/min/ft^)
5907
(145)
Apparent Opening Size ASTM D 4751 mm
(U.S. Sieve)
0.425
(40)
Ultraviolet Stability ASTM D 4355 % 90
*also available witii custom fabrics and stainless steel screens
nc- 3.1.7
Questions? Contact Kristar at (800) 579-8819. 03/05
FloGard®^Plus Filter
installed
SPECIFIER CHART
Model No. Inlet Width
(in)*
Solids Storage
Capacity (cuft)
Filtered Flow
(cfs)
Total Bypass
Cap. (cfs)
FGP-24CI 24 0.9 0.8 5.6
FGP-30CI 30 1.1 1.0 6.7
FGP-36CI 36 1.4 1.2 7.9
FGP-42CI 42 1.6 1.4 8.8
FGP-48CI 48 15 1.5 9.9
FGP-5.0CI 60 2.3 1.8 11.6
FGP-6.0a 72 2.8 2.2 13.8
FGP-7.0a 84 Z2 2.5 15.9
FGP-8.0CI 96 3.7 2.9 18.0
FGP-10.0CI 120 4.6 3.5 21.9
FGP-12.0CI 144 5.6 4.2 26.2
FGP-14.0CI 168 6.5 4.9 30.1
FGP-16.001 192 75 5.6 34.4
FGP-18.0CI 216 8.3 6.2 38.2
FGP-21.0CI 252 9.7 7.2 44.3
FGP-28.0CI 336 13.0 9.5 58.6
•Dimensions shown are approximate ~ submit exact measurements when ordering
NOTES:
1. Storage capacity rellecis 80% of naximum solids
collection prior lo Impeding filtering bypass.
2. Filtered lk)w rate Includes a salely taclor of 2.
3. FloGard®»Rus Catch Basin Filler Inseris are available
In Ihe standard sizes (see above) or In custom sizes.
Call lor details on custom size Inseris.
4. Available wilh recessed mount package including fiberglass
Iray alkwiing mainlenance access from manhole.
5. FloGanfHVPIus filler Inserts should be used in conjunction
wilh a regular mainlenance program. Referto
nanufaclurer's recommended mainlenance guidelines.
US PATENT
FLOGARDs +PLUS
CATCH BASIN FILTER INSERT
(Curb Mount)
CURB INLET
KriSlar Enterprises, Inc., Santa Rosa, CA (800) 579-8819
09/05
NOTES:
RoGard^"+Plus Filter
Installed
SPECIRER CHART
Model No. Inlet 10
(in X In)
Grate 00*
(In X in)
Solids Storage
Capacity (cuft) Filtered Row
(cfs)
Total Bypass
Cao. (cfs)
FGP-12F 12x12 12x14 0.3 0.4 2.8
FGP-1530F 15x30 15x35 2.3 1.6 6.9
FGP-16F 16x16 16x19 0.8 0.7 4.7
FGP-1624F 16x24 16x26 1.5 1.2 5.0
FGP-1 BF 18x18 18x20 0.8 0.7 4.7
FGP-1820F 16x19 18x21 2.1 1.4 5.9
FGP-1824F 16x22 18x24 1.5 1.2 5.0
FGP-1836F 18x36 18x40 2.3 1.6 6.9
FGP-2024F 18x22 20x24 1.2 1.0 5.9
FGP-21F 22x22 22x24 2.2 1.5 6.1
FGP-2142F 21 x40 24x40 4.3 2.4 9.1
FGP-2148F 19x46 22x48 4.7 2.6 9.8
FGP-24F 24x24 24x27 2.2 1.5 6,1
FGP-2430F 24x30 26x30 2.8 1.8 7.0
FGP-2436F 24x36 24x40 3.4 2.0 8,0
FGP-2448F 24x48 26x48 4.4 2.4 9.3
FGP-28F 28x28 32x32 2.2 1.5 6.3
FGP-2840F 24x36 28x40 4.2 2.3 8.7
FGP-30F 30x30 30x34 3.6 2.0 8.1
FGP-36F 36x36 36x40 4.6 2.4 9.1
FGP-3648F 36x48 40x48 6.8 3.2 11.5
FGP-48F 48x48 48x54 9.5 3.9 13.2
FGP-EJ5100F 20x20 23x23 0.8 0.7 4.7
FGP-EJ7020F 16x21 18x23 0.8 0.7 4.7
FGP-EJ7040F 16x20 19x22 0.8 0.7 4.7
1. storage capaciiy reflects 80% of maximim solids
collection prior to Impeding filtering bypass.
2. Filtered flow rate includes a salely faclor of 2.
3. FloGard@»Plus Catch Basin Filter inserts are available
In the standard sizes (see above) or In custom sizes.
Call lor details on custom size inseris.
4. FloCardlQVPIus filter inserts shouki be used In conjunclion
with a regular nuinlenanoe program. Referto
manulaclurer's recommended mainletiance guidelines.
steel Grate
Cast Iron Grate
US PATENT
FLOGARD. +PLUS
CATCH BASIN FILTER INSERT
(Frame Mount)
FLAT GRATED INLET
KriStar Enterprises, Inc., Sanla Rosa, CA (800) 579-8819
11/04
Flo-Gard+Plus Filter
instailed
SPECIRER CHART
Model No. Inlet ID
(In dia.)*
Grate OD
(In dia.)*
Solids Storage
Capacity (cuft)
Filtered Flow
(cfs)
Total Bypass
Cao. (cfs)
FGP-RF15F 15 18 0.3 0.4 2.8
FGP-RF18F 18 20 0.3 0.4 2.8
FGP-RF20F 22 24 0.8 0.7 4.7
FGP-RF24F 24 26 0.8 0.7 4.7
FGP-RF36F 36 39 2.2 1.5 6.1
•Dimensions shown are approximate -- submit exact measurements when ordering
NOTES:
1. Storage capacity reflects 80% ol maximum solids
collection prior to impeding filtering bypass.
2. RItered How rale includes a salely lactor of 2.
3. noGart«S><'Plus Catch Basin Filter inserts are available
In the standard sizes (see above) or in custom sizes.
Call lor details on custom size insens.
4. RoGardlj>t'Plus filler Inserts should be used in conjunction
with a regular mainlenance program Referto
manulaclurer's recommended mainlenance guidelines.
US PATENT
FLO-GARDb +PLUS
CATCH BASIN FILTER INSERT
(Frame Mount)
FLAT GRATED INLET
KriStar Enterprises, Inc., Sanla Rosa, CA (800) 579-8819
11/04
Flo-Gard+Plus Rller
inslalled-
SPECIRER CHART
Model No,
Inlet ID min
(In xin)*
Grate OD
(in x in)*
Solids Storage
Capacity (cu ft)
Filtered Flow
(cfs)
Total Bypass
Cap. (cfs)
FGP-1836FGO 24x36 18x40 2.3 1.6 6.7
FGP-2436FGO 36x36 24x40 3.4 2.0 8.0
FGP-48FGO 48x48 18x52 9.5 3.5 13.2
'Dimensions shown are approximate ~ submit exact measurements when ordering
NOTES:
1. storage capacity reflects 80% ol maxinium solids
collection prior to impeding tillering bypass.
2. Filtered flow rate includes a salely tactor ol 2.
3. FloCiard®fPlus Catch Basin Filler inserts are available
in Ihe standard sizes (see above) or in custom sizes
Call lor details on custom size Inserts.
4. FloGard®»Plus tiller Inserts should be used in conjunclion
wilh a regular mainlenance program. Referto
manufacturer's recommended maintenance guidelines.
us PATENT
FLOGARDs +PLUS
CATCH BASIN FILTER INSERT
(Wall Mount)
COMBINATION INLET
KriStar Enterprises, Inc.. Santa Rosa, CA (800) 579-8819
11/04
nc- 3.9.11
Flo-Gard-i-Plus Filter
installed
SPECIRER CHART
Model No.
Inlet ID min,
(In X in)*
Inlet ID max
(In x In)'
Solids Storage
Capacity (cuft)
Filtered Row
(cfs)
Total Bypass
Cap. (cfs)
FGP-1836W 16x33 22x37 2.3 1.6 6.7
FGP-1836WE 16x33 22x39 2.3 1.6 6.7
FGP-24W 22x22 27x27 2.2 1.5 5.9
FGP-28W 26x26 28x28 2.2 1.5 5.9
FGP-2436W 22x33 27x37 3.4 2.0 7.7
FGP-2436WE 22x37 27x39 3.4 2.0 7.7
FGP-36W** 32x33 37x42 4.6 2.4 8.7
FGP-36WE** 32x37 39x42 4.6 2.4 8.7
FGP-3648W* 33x44 37x54 6.8 3.2 11.5
FGP-3648WE** 37x44 39x54 6.8 3.2 11.5
'Dmensions shown are approximate - submit exact measurements vi*ien ordering
"2 pieces
NOTES:
1. Storage capacity reflects Wf,i> of maximum solids
collection prior to Impeding filtering bypass.
2. Filtered flow rale Includes a safety faclor ol 2.
3. FloGardSf Plus Catch Basin Rlter inseris are available
in the standard sizes (see above) or In custom sizes.
Call for details on custom size inseris.
4. RoGard(l%»Plus filter inseris should be used in conjunction
with a regular maintenance program. Reler to
manulaclurer's recommended mainlenance guidelines.
US PATENT
FLOGARD® +PLUS
CATCH BASIN FILTER INSERT
(Wall Mount)
COMBINATION INLET
KriStar Enterprises, Inc., Sanla Rosa, CA (800) 579-8819
11/04 I
HG s rtT,
allalHWo ui lo(IIP^PLliPM of!
ABOUT
US KRISTAR CONTACT
STORN4WATER TREAT^4ENT PROOUCTS
Sediment
Control
Inlet
Protection
Inlet
Filtr<ition
Gr<ivity
Separation
IK
Specialty
Products
ty j Outlet M.iintcn.m
tt I Screening Scrvrcci
±25
Installation Guide
FloGard+PLUS^''
Download
Complete
PDF Specs
FloGard-i-PLUS"' Catch Basin Insert Filters are designed for installation in flat grated catch basins,
combination (grated and curb opening) catch basins and curb opening catch basins. They may be
"Frame" mounted or "Wall" mounted depending on the type of catch basin.
Key elements of installation ofthe various devices and mounting methods are:
Frame Mount Insert Filter (for standard or irregular-dimensioned flat grated inlets):
• Remove the inlet grate and clean and remove any collected debris and trash from the catch
basin.
• Clean off the grate bearing ledge and lower the filter assembly onto the ledge.
• Insure that the four floatable adsorbent pouches are tethered to the D-rings in the bottom
corners of the assembly.
• Replace the inlet grate.
GEN ERAL SPECinCAT10N.S FOU MAINTEN AINCE OF
FLO-CXRlf'+PLlS C. I TCIt B.iSI.\ l,\SEKT rtLTi:RS
SCOPE:
Federal. State and Local Clean Water Act regulations and those of insurance cari-iers require tliat
stormwater filtration systems be maintained and .serviced on a recurring basis. The inteni ofihe regulations
is to ensure that the systems, on a continuing basis, efficiently remove pollutants from stormwater runoff
thereby preventing pollution ofthe nation's water resources. These Specifications apply to the Flo-Gard
+Plus Catch Basin Insert Filler.
RECOMMENDED FREQUENCY OF SERVICE:
Drainage Protection Sysiems (DPS) recommends that inslalled Flo-Gard™+Plus Catch Basin Insert Filters
be serviced on a recurrini: basis. Ultimately, the frequency depends on the amount of runoff, pollutant
loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is recommended
that each installation be serviced a minimum of three times per year, with a change of filter medium once
per year. DPS technicians are available lo do an on-site evaluation, upon request.
RECOMMENDED TIMING OF SERVICE:
DPS auidelines for the timing of service are as follows:
\. For areas with a definite rainy season: Prior to. during and following the rainy season.
2. For areas subject to year-round rainfall: On a recurring basis (at leasl three times per year).
3. For areas with winter snow and summer rain: Prior to and just after the snow season and during
the summer rain season.
4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring
basis (no less than three times per year).
SERVICE PROCEDURES:
1. The service shall commence wilh collection and removal of sediment and debris (litter, leaves,
papers, cans, etc.) and broom sweeping around the drainage inlet. Accumulated malerials shall be
placed in a DOT approved conlainer for later disposal.
2. The catch basin shall be visually inspected for defects and possible illegal dumping. If illegal
dumping has occurred, the proper authorities and property owner representative shall be notified
as soon as practicable.
3 The catch basin grate shall be removed and set lo one side. Using an induslrial vacuum, the
collected materials shall be removed from the liner. (Note: DPS uses a truck-mounted vacuum for
servicing Flo-Gard™ +Plus catch basin inserts.)
4. When all ofthe collected materials have been removed, the filler medium pouches shail be
removed by unsnapping the tether from the D-ring and sel to one side. The filter liner, gaskets,
stainless steel frame and mounling brackets, etc. shall be inspected fbr continued serviceability.
Minor damaae or detects found shall be corrected on-the-spot and a notation made on the
Mainlenance" Record. More extensive deficiencies that affect the etTiciency ofihe filter (torn liner,
etc.), if approved by the customer representative, will lie corrected and an invoice submitted lo the
represenlative along with the Mainlenance Record.
5. The filter medium pouches shall be inspected for defects and continued serviceability and replaced
as necessary and the jiouch tethers re-altached to the liner's D-rjng. See below.
6. The grate shall be replaced.
EXCHANGE AND DISPOSAL OF EXPOSED FILTER MEDIUM AND COLLECTED DEBRIS
The frequency of filler medium pouch exchange will be in accordance with Ihe existing DPS-Customer
Maintenance Contract. DPS recommends that the medium lie changed at least once pel" year. During the
appropriaie service, or ifso determined by the service technician during a non-scheduled service, the lllter
medium pouches will be replaced with new pouches and the exposed pouches placed in the DOT approved
conlainer. along wilh the exposed debris. Once the exposed pouches and debris have been placed in the
container, DPS has possession and must dispose of il in accordance with local, stale and federal agency
requiremenls.
Note: As llie fiencriitor, tlw ttimlowiier is iillintalely responsible for llie proper disposut ofttie e.\poscd
filler nieitiiiiu amt detiris. Bccniise llie niiilerials liticty anitain petroteiini tiyttroairt>oiis, tieiny metals
and oilier liurmfulpottiilunts, tlie nuiteriats must t)e treated as an EPA Class 2 ifazardoiis Wa.\te and
properly disposed of DPS relieves tlie taiidowiier of Itie actual disposal tasti, ami provides certification
of its completion in accordance with appropriate regulations.
DPS also has thc capability of servicing all manner of catch basin inserts and catch basins without
inserts, underground oil/water separators, stormwater interceptors and other such devices. All DPS
personnel are highly qualified technicians and are confined space trained and certified. Call us at
(888) 950-8826 for further information and assistance.
05/04/04
TRITON TDAMPK'STM
(Designed for Parkway Drains)
(888) 526-4736
Drain exits into
street
Mounting Brackets
May also be concealed on
inside walls
Flow from Parking lot TDAMPKTM
Removable
Media Pak
REMOVABLE
MEDIA PAK
STAINLESS STEEL
HOUSING
END VIEW
STANDARD FEATURES:
Filler frame shall be made of H.D.P.E., Non-reactive High Density
Polyethylene plastic with U.V. Inhibitors with an average thickness of
.1562. Bottom and side Plates lo be 2Gga. Stainless Steel, Type 304.
The exterior cage of fhe cartridges shall be made of stainless steel
Type 304. having .063 gauge welded 1.5 x 2" square openings.
Filter media cartridges are easily removed from units for easy
maintenance.
Filter design requires storm events to be filtered through Media Pak.
This prevents Hows from bypassing Media Pak, which filters out
hydrocarbons and other pollutants.
Disposable Cartridge Media Pak's are constmcted from durable geo-
textile polypropylene fabric.
Media is non-hazardous, per EPA and OSHA standards.
Please refer fo manufacture's recommendations for an approved
maintenance program.
STANDARD DIMENSIONS
(CUSTOM SIZES AVAIU^BLE UPON REQUEST)
MODEL NO. A B C
TDAM12PK 11.5" 3.5" 1.5"
TDAM18PK 17.5 3.5" 1.5"
TDAM24PK 23.5" 3.5" 1.5"
TDAM30PK 29.5" 3.5" 1.5"
TDAM36PK 35" 3.5" 1.5'
TDAM42PK 41" 3.5" 1.5"
TDAM48PK 47" 3.5" 1.5"
TDAM54PK 53" 3.5" 1.5"
TDAM60PK 59" 3.5" 1.5"
TDAM66PK 65" 3.5" 1.5"
TDAM72PK 71" 3.5" 1.5"
NOTES:
TDAMPKTM Model numbers represent
Parkway Drains width I.D. sizes.
(Example: TDAM24PK fits into a 24"
wide Parkway Drain) The height of the
units can be sized larger for higher drains
openings if necessary. Most common
height tends to be 4" tall, which will also
allow for additional overflow within the
drain.
Custom sizes can also be
accommodated, please call our office and
allow our staff to help you specify a
specific requirement.
THE DESIGN ANO DETAIL OF THIS
DRAWING IS THE PROPERTY OF REM
INC. ANO IS NOT TO BE USED EXCEPT
IN CONNECTION VWTH OUR WORK.
DESIGN AND INVENTION RIGHTS ARE
RESERVED.
PH: (888) 526-4736
DIMENSIONS ARE IN INCHES UNLESS
OTHERWISE NOTED.
REM Inc.
TRITON TDAMPK's
(Designed for Parkway Drains and other application)
DRAWN BY;
C.F.
1/4:1
FOR:
Trench Drains
DATE: 1/22/2004 snr
£1 10F1
REM (TDAM-PK) Series Flow Matrix
HYDRAULIC TESTING
300
250
200
0.
o
Model
• Nominal GPM (With Hydrocartjon Pak)
• Nominal GPM (Debris Pak Only)
TDAM06-
PK (6"
width)
21.18
32.1
TDAM08-
PK (8"
width)
"^8.24
42.8
TDAM10-
PK
(lOVidth)
35.3
53.5
TDAM12-
PK
(12"width)
42.36
64.2
TDAM15-
PK
(15"width)
~52^5^
"80.25
TDAM18-
PK
(18"width)
63.54
96.3
TDAM30-
PK
TDAM36- TDAM42-
PK PK
(30"width) \ (36"width) (42"width)
'84"72T'l27.08_ 148.26
128.4 r~ 192.6 224 7
TDAM48-
PK
(48"widlh)
169.44
256.8
4.0 OPERATION AND MAINTENANCE PROGRAM
The operation and maintenance requirements for each type of BMP are as follows:
4.1 Source Control BMPs
4.1.1 Hazardous Material Storage
Hazardous materials with the potential to contaminate urban runoff shall be:
• Placed in an enclosure such as, but not limited to a cabinet, shed, or similar structure that
prevents contact with rain, runoff or spillage to the storm water conveyance system.
• Protected by secondary containment structures such as berm, dikes, or curbs.
• The storage shall be paved and sufficiently impervious to contain leaks and spills.
• The storage shall have a roof or awning to minimize direct precipitation within the
secondary containment area.
4.1.2 Trash Storage
The operational and maintenance needs of trash storage shall be:
• The trash storage area shall be paved with an impervious surface, designed not to allow
run-on from adjoining areas.
• The trash storage area shall be screened or walled to prevent off-site transport of trash.
• All trash containers shall contain lids that exclude rain.
4.1.3 Efficient Irrigation System
The operational and maintenance needs of an irrigation system are:
• Preventive maintenance and visual inspection of all sprinkler heads and lines.
• Periodic testing of all irrigation stations to verify if each landscape area is getting
the correct amount of water.
• Periodic testing of all flow reducers and/or shutoff valves to verify in good working
order.
Inspection Frequency
The facility will be inspected and inspection visits will be completely documented:
• Once a month at a minimum or as directed by the City of Carlsbad.
Aesthetic and Functional Maintenance
Both forms of maintenance will be combined into an overall Stormwater Management
System Maintenance.
Aesthetic Maintenance
The following activities will be included in the aesthetic maintenance program:
• Broken sprinkler heads and/or lines will be repaired or replaced in a timely manner.
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Functional Maintenance
Functional maintenance has two components:
Preventive maintenance
Corrective maintenance
Preventive Maintenance
Preventive maintenance activities to be instituted for an irrigation system include:
• Preventive maintenance and visual inspection ofall sprinkler heads and lines.
• Periodic testing of all irrigation stations to verify if each landscape area is getting
the correct amount of water.
• Periodic testing ofall flow reducers and/or shutoff valves to verify in good working
order.
Corrective Maintenance
Corrective maintenance is required on an emergency or non-routine basis to correct
problems and to restore the intended operation and safe function of an irrigation
system. Corrective maintenance activities include:
• Broken sprinkler heads and/or lines will be repaired or replaced in a timely manner.
• General Facility Maintenance. In addition to the above elements of corrective
maintenance, general corrective maintenance will address the overall irrigation
system and its associated components. If corrective maintenance is being done to
one component, other components will be inspected to see if maintenance is
needed.
4.1.4 Inlet / Catch Basin Tiles
The curb inlet and precast concrete grated catch basins shall be adorned with tiles containing
prohibitive language and/or icons to discourage illegal dumping. The legibility ofthe tiles will
be maintained and they will be placed flush with the top of the concrete to reduce tripping by
pedestrians. All tiles shall be inspected at least once a month or as directed by the City of
Carlsbad. Should the legibility of the tile be in question, then the tile shall be repaired or
replaced to restore full legibility.
4.1.5 Good Housekeeping
The operational and maintenance needs associated with good housekeeping are:
• Keep outdoor areas in a neat and orderly condition.
• Pick up garbage and/or animal fecal waste left within the pavement and landscape
areas.
• Periodic sweeping of the paved areas.
• Removal ofall freshly trimmed landscape items and natural deposited items such as
annual leaves and disposal off-site per governing codes.
• Apply all fertilizer, herbicide or pesticide in the amount and application as provided
by the manufacturer.
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Inspection Frequency
The site will be inspected and inspection visits will be completely documented:
• On a weekly basis or a directed by the City of Carlsbad
Aesthetic and Functional Maintenance
Both forms of maintenance will be combined into an overall Stormwater Management
System Maintenance.
Aesthetic Maintenance
The following activities will be included in the aesthetic maintenance program:
• Keep outdoor areas in a neat and orderly condition.
• Pick up garbage and/or animal fecal waste left within the pavement and landscape
areas.
• Periodic sweeping of the paved areas.
• Removal of all freshly trimmed landscape items and natural deposited items such as
annual leaves and disposal off-site per governing codes.
• Weed Control. Weeds will be removed through mechanical means. Herbicide will
not be used because these chemicals may impact the water quality monitoring.
Functional Maintenance
Functional maintenance has two components:
Preventive maintenance
Corrective maintenance
Preventive Maintenance
Preventive maintenance activities to be instituted with good housekeeping are:
• Apply all fertilizer, herbicide or pesticide in the amount and application as provided
by the manufacturer.
Corrective Maintenance
Corrective maintenance is required on an emergency or non-routine basis. Corrective
maintenance activities include:
• General Facility Maintenance. General corrective maintenance will address the
overall facility and its associated components. If corrective maintenance is being
done to one component, other components will be inspected to see if maintenance is
needed.
Prepared By
Partners Planning and Engineenng
P:\dwg\605\605-swmp.doc
9/5/2006
4.2 Treatment Control BMPs
4.2.1 FloGard™ +PLUS Storm Water Filtration System
The operational and maintenance needs of a FloGard™ +PHJS Storm Water Filtration System
are:
• Removal of contaminants, sediments and debris from stormwater runoff
• Absorption of petroleum hydrocarbons and oil-based products from stormwater runoff
Inspection Frequency
The FloGard'" +PLUS Storm Water Filtration System will be inspected on a regular basis. The
frequency of inspection would be based on pollutant loading, amount of debris, leaves, etc., and
amount of runoff. The manufacturer's recommendations include no less than three inspections
per year.
Manufacturer guidelines for inspection frequency are:
• For areas with a definite rainy season:
Prior to and during the rainy season.
• For areas subject to year-round rainfall:
On a recurring (preferably scheduled) basis.
• For areas with winter snow and summer rain:
Prior to and just after the snow season and during the summer rain season.
• For filters not subject to the elements (wash racks, parking garages, etc.):
Inspections should be on a regular basis.
Aesthetic Maintenance
The parking lot will be swept on a regular basis. Sediment and debris (litter, leaves, papers,
cans, etc.) within the area and especially around the drainage inlet will be collected and removed
Preventive Maintenance
Preventive maintenance for the FloGard™ +PLUS Storm Water Filtration System will be:
• After broom sweeping and removal of debris around the inlet, the catch basin grate will be
removed and the condition of the screens will be checked.
• For Hydrocarbon units with screens covering the adsorbent, the condition of the screen will
be checked and the adsorbent will be inspected through the screen. If excessive silt covers the
top of the adsorbent or if the adsorbent granules are more than one-half coated with a dark
gray or black substance, the adsorbent will be replaced.
• For FloGard™ units with adsorbent pouches, the condition of the pouches will be checked
and a visual inspection made of the enclosed adsorbent. If the granules are covered, the
pouches will be replaced.
• For Flo-Gard'" filters, which have a fabric filter body, the serviceability ofthe fabric will be
determined and, if called for, replaced with a new one.
Corrective Maintenance
Corrective maintenance is required when the exposed adsorbent filter medium needs to be
replaced. To replace the filter medium, the steps are:
• To avoid spilling the exposed adsoibent filter medium into or onto the surrounding surface,
the person replacing the adsorbent should move away from the inlet and work over a large
work cloth.
• All exposed adsorbent and collected debris must be dumped into a D.O.T.-approved
container for later disposal. The method of replacing the adsorbent depends on the type of
filter.
• For filters with removable filter cartridges, the cartridges need to be removed from the
filter, the end caps removed and the exposed material poured out. The new adsorbent will
be poured into the adsorbent containment area to a level about 1 Vi inches from the top
screen when the filter cartridge or filter is level.
• For filters with one-piece top screens, the entire filter needs to be removed to the work
area, the top screen removed and the exposed material poured out. The new adsorbent
will be poured into the adsorbent containment area to a level about 1 Vz inches from the
top screen when the filter cartridge or filter is level.
• For filters with adsorbent pouches, the pouches need to be removed and disposed of The
new adsorbent pouches are snapped into place.
Disposal of Exposed Adsorbent, Debris and Trash
The exposed adsorbent, debris and trash that is generated, will be properly disposed of by
Carlsbad Medical Village, LP.
• The exposed adsorbent is non-biodegradable, non-leaching and non-carcinogenic so, with
proper handling and documentation, it can be disposed of at a landfill. However, because
disposal regulations vary by area, Carlsbad Medical Village, L.P. will contact their local
regulatory agency and landfill to ensure compliance with local and state environmental
regulations.
Hazardous Waste
Suspected hazardous wastes will be analyzed to determine disposal options. Hazardous
wastes generated onsite will be handled and disposed of according to applicable local,
state, and federal regulations. A solid or liquid waste is considered a hazardous waste if
it exceeds the criteria listed in the CCR, Title 22, Article 11.
4.2.1 Triton™ TDAMPK Filtration System
The Triton " TDAMPK Filtration System shall be privately maintained by Carlsbad Medical
Village, LP and located outside of the public easement and right-of-way.
The operational and maintenance needs of the Triton'" TDAMPK Filtration System are:
• Removal of contaminants, sediments and debris from stormwater runoff
• Absorption of petroleum hydrocarbons and oil-based products from stormwater runoff
Inspection Frequency
The Triton " TDAMPK Filtration System will be inspected on a regular basis. The frequency of
inspection would be based on pollutant loading, amount of debris, leaves, etc., and amount of
runoff. The manufacturer's recommendations include no less than three inspections per year.
Aesthetic Maintenance
The parking lot and driveway will be swept on a regular basis. Sediment and debris (litter,
leaves, papers, cans, etc.) within the area and especially around the drainage inlet will be
collected and removed
Preventive Maintenance
TM
Preventive maintenance for the Triton TDAMPK Filtration System will be:
• Inspect each filter's media condition. When service requires the replacement of the filter
media, a separate container will be used for the spent media.
• Visually inspect and check condition of the trough area.
• Replace grate and lockdown.
• Secure and date weatherproof lock-out tags.
Corrective Maintenance
Corrective maintenance is required when the filter media reaches 50% saturation. To replace the
filter medium, the steps are:
• The filter media cartridge should only be replaced by trained personnel.
• The spent filter media will be placed into a separate container. The spent media is then
transported to an approved facility for recycling.
Disposal of Exposed Adsorbent, Debris and Trash
The exposed adsorbent, debris and trash that is generated, will be properly disposed of by
Carlsbad Medical Village, LP or an approved agent.
• The filter media can be recycled at an approved facility by removing the typical oil and
grease contaminants commonly found in storm water runoff.
Hazardous Waste
Suspected hazardous wastes will be analyzed to determine disposal options. Hazardous
wastes generated onsite will be handled and disposed of according to applicable local,
state, and federal regulations. A solid or liquid waste is considered a hazardous waste if
it exceeds the criteria listed in the CCR, Title 22. Article 11.
4.2.3 Vegetated Swales and Strips
The operational and maintenance needs of vegetated swales and strips are:
• Vegetation management to maintain adequate hydraulic functioning and to liniit
habitat for disease-carrying animals.
• Animal and vector control.
• Periodic sediment removal to optimize performance.
• Trash, debris, grass trimmings, tree pruning, and leaf collection and removal to
prevent obstruction of a strip and monitoring equipment.
• Removal of standing water, which may contribute to the development of aquatic
plant communities or mosquito breeding areas.
• Removal of graffiti.
• Preventive maintenance on sampling, flow measurement, and associated BMP
equipment and structures.
• Erosion and structural maintenance to prevent the loss of soil and maintain the
performance of the swale..
Inspection Frequency
The facility will be inspected and inspection visits will be completely documented:
• Once a month at a minimum.
• After every large storm (after every storm monitored or those storms with more
than 0.50 inch of precipitation.)
• On a weekly basis during extended periods of wet weather.
Aesthetic and Functional Maintenance
Aesthetic maintenance is important for public acceptance of storm water facilities.
Functional maintenance is important for performance and safety reasons.
Both forms of maintenance will be combined into an overall Storm water Management
System Maintenance.
Aesthetic Maintenance
The following activities will be included in the aesthetic maintenance program:
• Graffiti Removal. Graffiti will be removed in a timely manner to improve the
appearance of a swale and to discourage additional graffiti or other acts of
vandalism.
• Grass Trimming. Trimming of grass will be done on the vegetated swale, around
fences, at the inlet and outlet structures, and sampling structures.
• Weed Control. Weeds will be removed through mechanical means. Herbicide will
not be used because these chemicals may impact the water quality monitoring.
Functional Maintenance
Functional maintenance has two components:
Preventive maintenance
Corrective maintenance
Preventive Maintenance
Preventive maintenance activities to be instituted at a vegetated strip are:
• Grass Mowing. Vegetation seed mix within the swale/strip is designed to be kept
short to maintain adequate hydraulic functioning and to limit the development of
faunal habitats.
• Trash and Debris. During each inspection and maintenance visit to the site, debris
and trash removal will be conducted to prevent the swale/strip from being
obstructed.
• Sediment Removal. Sediment accumulation, as part of the operation and
maintenance program at a swale/strip, will be monitored once a month during the
dry season, after every large storm (0.50 inch), and monthly during the wet season.
Specifically, if sediment reaches a level at or near plant height, or could interfere
with flow or operation, the sediment will be removed. If accumulation of debris or
sediment is determined to be the cause of decline in design performance, prompt
action (i.e., within ten working days) will be taken to restore the swale/strip to
design performance standards. Actions will include using additional fill and
vegetation and/or removing accumulated sediment to correct channeling or
ponding. Characterization and appropriate disposal of sediment will comply with
applicable local, county, state, or federal requirements. The swale will be regraded,
if the flow gradient has changed, and then replanted with sod.
• Removal of Standing Water. Standing water must be removed if it contributes to the
development of aquatic plant communities or mosquito breeding areas.
• Mechanical and Electronic Components. Regularly scheduled maintenance will be
performed on fences, gates, locks and sampling and monitoring equipment in
accordance with the manufacturers' recommendations. Electronic and mechanical
components will be operated during each maintenance inspection to assure
continued performance.
• Fertilization and Irrigation. The vegetation seed mix has been designed so that
fertilization and irrigation is not necessary. Fertilizers and irrigation will not be
used to maintain the vegetation.
• Elimination of Mosquito Breeding Habitats. The most effective mosquito control
program is one that eliminates potential breeding habitats.
Corrective Maintenance
Corrective maintenance is required on an emergency or non-routine basis to correct
problems and to restore the intended operation and safe function of a swale. Corrective
maintenance activities include:
• Removal of Debris and Sediment. Sediment, debris, and trash, which impede
the hydraulic functioning of a swale/strip and prevent vegetative growth, will be
removed and properly disposed. Temporary arrangements will be made for
handling the sediments until a permanent arrangement is made. Vegetation will
be re-established after sediment removal.
• Structural Repairs. Once deemed necessary, repairs to structural components of
a swale/strip and its inlet and outlet structures will be done within 10 working
days. Qualified individuals (i.e., the designers or contractors) will conduct
repairs where structural dainage has occurred.
• Embankment and Slope Repairs. Once deemed necessary, damage to the
embankments and slopes of strips will be repaired within 10 working days.
• Erosion Repair. Where a reseeding program has been ineffective, or where
other factors have created erosive conditions (i.e., pedestrian traffic,
concentrated flow, etc.), corrective steps will be taken to prevent loss of soil and
any subsequent danger to the performance of a swale. There are a number of
corrective actions than can be taken. These include erosion control blankets,
riprap, sodding, or reduced flow through the area. Designers or contractors will
be consulted to address erosion problems if the solution is not evident.
• Fence Repair. Repair of fences will be done within 30 days to maintain the
security of the site.
• Elimination of Animal Burrows. Animal burrows will be filled and steps taken to
remove the animals if burrowing problems continue to occur (filling and
compacting). If the problem persists, vector control specialists will be consulted
regarding removal steps. This consulting is necessary as the threat of rabies in some
areas may necessitate the animals being destroyed rather lhan relocated. If the
BMP performance is affected, abatement will begin. Otherwise, abatement will be
performed annually in September.
• General Facility Maintenance. In addition to the above elements of corrective
maintenance, general corrective maintenance will address the overall facility and its
associated components. If corrective maintenance is being done to one component,
other components will be inspected to see if maintenance is needed.
Debris and Sediment Disposal
Waste generated within the vegetated swales/strips is ultimately the responsibility of
Carlsbad Medical Village, L.P. Disposal of sediment, debris, and trash will comply
with applicable local, county, state, and federal waste control programs.
Hazardous Waste
Suspected hazardous wastes will be analyzed to determine disposal options. Hazardous
wastes generated onsite will be handled and disposed of according to applicable local,
state, and federal regulations. A solid or liquid waste is considered a hazardous waste if
it exceeds the criteria listed in the CCR, Title 22, Article 11.
5.0 FISCAL RESOURCES
Carlsbad Medical Village. L.P. is aware of its responsibility to maintain all construction and
post-construction BMPs to ensure they are all in good working order. They understand that as
part ofthe discretionary project review process, the City of Carlsbad will include maintenance
conditions in the permit conditions and that security may be required. In addition. Carlsbad
Medical Village, L.P. is aware that the City ofCarlsbad may require them to enter into a contract
with the City prior to permit issuance obliging Carlsbad Medical Village. L.P. to maintain, repair
and replace the storm water BMP as necessary into perpetuity and that security may be required.
6.0 CONCLUSIONS
The proposed development ofthe Carlsbad Medical Village should not adversely impact the
beneficial uses ofthe Encinas Hydrologic Area (HA 904.40) of the Carlsbad Hydrologic Unit.
In order to minimize water quality impacts associated with development, Carlsbad Medical
Village, L.P. will institute site design, source control and treatment control BMPs as identified in
Section 3.2 of this report.
The target pollutants generated by this site and the proposed BMPs to treat them are as follows:
• Nutrients from fertilizers will be treated primarily by practicing and maintaining good
housekeeping procedures and by the proposed FloGard'" +PLUS Storm Water Filtration
System, Triton'" TDAMPK Filtration System and vegetated swales as secondary BMPs.
• Trash and debris will be treated by practicing and maintaining good housekeeping
procedures and by the FloGard™ +PLUS Storm Water Filtration System, Triton
TDAMPK Filtration System and vegetated swales as secondary BMPs.
• Pesticides from landscaping will be treated by practicing and maintaining good
housekeeping procedures.
• Sediment discharge due to construction activities will be treated by the use of silt fence,
stockpile management, stabilized construction entrance/exit, erosion control mats and
spray-on applications, gravel bag barriers and permanent revegetation ofall disturbed
uncovered areas.
• Oxygen demanding substances from landscaping will be treated by practicing and
maintaining good housekeeping procedures.
• Oil and grease from parked cars will be treated by the proposed FloGard +PLUS Storm
Water Filtration System, Triton™ TDAMPK Filtration System and vegetated swales.
• Heavy metals from parked cars will be treated by the proposed FloGard' +PLUS Storm
Water Filtration System, Triton™ TDAMPK Filtration System and vegetated swales.
Although none ofthe BMPs chosen are rated as having a High Removal Efficiency, Carlsbad
Medical Village, L.P. believes that it has addressed the water quality issues to the maximum
extent practicable considering the size of this site and the amount of runoff generated.
The overall site design for the project encompasses the majority of the site with the exception of
exterior sloped areas. Therefore, there is not sufficient space to construct either an above ground
detention facility, an infiltration basin, wet pond or wet land. The maintenance headaches
associated with a sand filter (requires frequent maintenance to prevent clogging, and may need to
be placed off-line to protect it during extreme storm events) keep it from being a viable structural
treatment BMP.
This Storm Water Management Plan (SWMP) has been prepared under the direction ofthe
following Registered Civil Engineer. The Registered Civil Engineer attests to the technical
information contained herein and the engineering data upon which recommendations,
conclusions, and decisions are based.
Brent C. Moore
REGISTERED CIVIL ENGINEER
Date
ATTACHMENT A
VICINITY MAP
c
PACIFIC
OCEAN
VICINITY MAP
NOT TO SCALE
ATTACHMENT B
PROJECT POST CONSTRUCTION BMP PLAN"
ATTACHMENT C
CALCULATIONS
STORM DRAIN REPORT
FOR
CARLSBAD MEDICAL VILLAGE
Carlsbad, California
March 2, 2006
CT 05-19
PUD 05-15
SDP 05-13
Prepared By:
PARTNERS Planning and Engineering
15938 Bemardo Center Drive
SanDiego, CA 92127
(858) 376-3444
Brent C.Moore RCE 59121
Registration Expires 6-30-2007
TABLE OF CONTENTS
SITE AND PROJECT DESCRIPTION page 1
METHODOLOGY page 1
EXISTING CONDITIONS page 1
DEVELOPED CONDITIONS page 1
EXISTING RUNOFF ANALYSIS page 1
DEVELOPED RUNOFF ANALYSIS page 3
CHANNEL DESIGN AND ANALYSIS page 3
DETENTION BASIN DESIGN AND ANALYSIS page 3
RESULTS AND CONCLUSIONS page 3
LIST OF FIGURES
FIGURE 1: VICINITY MAP page 2
FIGURE 2A: EXISTING HYDROLOGY MAP attached
FIGURE 2B: PROPOSED HYDROLOGY MAP attached
Appendix 1
Appendix 2
Appendix 3
Appendix 4
Appendix 5
Appendix 6
LIST OF APPENDICES
Runoff Coefficients for Urban Areas
Overland Time of Flow Nomograph
100-Year Rainfall Isopluvials
Intensity-Duration Design Chart
Handbook of Hydraulics Table 7-11
Gutter and Roadway Discharge Velocity Chart
SITE AND PROJECT DESCRIPTION:
This storm drain report has been prepared as part of the Development Review submittal
requirements for the grading and improvements association with the proposed Carlsbad
Medical Village. The proposed development includes five (5) office buildings with
associated parking, landscaping and hardscape. The project site is currently undeveloped.
The project site is located south of Carlsbad Village Drive and east of Interstate 5. Access to
the site occurs off Carlsbad Village Drive. See Figure No. 1 for Vicinity Map. See Figures
2A and 2B attached at the end of this report for the existing and proposed drainage limits.
METHODOLOGY
This drainage report has been prepared in accordance with current City of Carlsbad
regulations and procedures. All storm water calculations were based on the 100-year storm.
The Rational Method was used to compute the anticipated runoff. The following references
have been used in preparation of this report:
(1) San Diego Countv Hvdrologv Manual. June. 2003.
(2) Handbook of Hvdraulics. E.F. Brater & H.W. King, 6"^ Ed., 1976.
EXISTING CONDITIONS:
The project site is currently undeveloped. The runoff from the undeveloped site sheet flows
east to west towards the westerly property line and onto the adjacent properties to the west.
The runoff from the site ultimately drains to the Pacific Ocean.
DEVELOPED CONDITIONS:
The proposed development for the Carlsbad Medical Village includes five (5) office
buildings with associated parking, landscaping and hardscape. The majority of the surface
runoff generated on-site as well as a majority of the off-site run-on will be intercepted by
either the proposed curb inlet or type 'F' catch basin located near the driveway entrance to
the project site. The runoff is then conveyed to the proposed below ground detention facility.
The on-site storm drain system will be designed to limit the amount of runoff discharged
onto Carlsbad Village Road to 4.0 cfs at any one time. The remainder of the runoff is
designed to drain through openings in the proposed site screen wall and onto the adjacent
properties to the west.
EXISTING RUNOFF ANALYSIS:
The runoff from the undeveloped site sheet flows east to west towards the westerly property
line and onto the adjacent properties to the west. The runoff from the site ultimately drains to
the Pacific Ocean. A runoff coefficient of 0.57 would be appropriate for the existing basin.
See the attached calculations.
c
1-^
PACIFIC
OCEAN
VICINITY MAP
NOT TO SCALE
DEVELOPED RUNOFF ANALYSIS:
All ofthe proposed pipes, inlets and catch basins were designed to intercept and convey the
100-year storm. The runoff coefficients for the site were based on soil group D and the
ultimate improvements for the proposed site.
CHANNEL DESIGN AND ANALYSIS
The proposed trapezoidal grass lined channel within this project was sized using King's
Handbook (Ref 3), Table 7-11. For trapezoidal channels:
K' = Qn/[b^(8/3)s^(l/2)] where
K' = Discharge Factor
Q = Runoff Discharge (cfs)
n = Manning's Coefficient
b = Channel Bottom Width (ft)
s = Channel Slope (ft/ft)
Natural, vegetated lined channels are capable of withstanding erosion for velocities up to 5
fps.
DETENTION BASIN DESIGN AND ANALYSIS:
The proposed, on-site detention facility was sized utilizing the single-hydrograph method.
See the attached calculations for the design procedures utilized with the single-hydrograph
method. The on-site detention facility was designed to limit the amount of runoff directed
towards Carlsbad Village Road to 4.0 cfs at any one time.
RESULTS AND CONCLUSIONS
The developed site discharges a total of 1.0 cfs to the adjacent properties to the west and 4.0
cfs to Carlsbad Village Drive. The existing site discharges 9.0 cfs to the properties to the
west. The project site design includes below ground culverts to be utilized for storm water
detention to reduce post-development runoff to below pre-existing levels.
A Storm Water Management Plan will be prepared separately to discuss the impacts the
proposed development will have on the storm water quality.
To' I, 1.1-^)^0 - f.s C f'l- C, Sl) i/yj"^ ^,1/M/z^i^T^S
-7,^^ [2.7 )C6>.*1J i>,OJ-/'rrc i — v
GMrr€iZ ftctM
^yzury\ "^viTTTfC / D\SCfMT^2^f^ l/fUPCi^- CrfA^7~
\/^ fps
Tc' ^.^A^Jn^-h O'if^'^' ^.S-M/AJ
C^i^l^ M^i^/1/, 7i^-^
C>of,o o
y
Sfirf/^ AS: A-0,15 A-f-
S.i^U
FJ^/W ^/s: TTree^e -7-/-'/ ^H"^ o.z-s ^ J>^^-9^
SASif^AH : A' 003^
O- o.sy
C^A^ /,0& ^ (0,0-5.)' /,o^
^/•'^ to
1,00> I'^hmn) Cf.o)'^'^"^^^ 7-ii'^/^n^^
Retf/n "O^rm^fi, / i^^nAi>i*^A^piscH/t^£.. U^tc^C^tr^' cfh^0T
\/-- 2.) //^S•
A6 : A' 1,35Af-
Ql^>r^ ^ - GIA ^< ^ ^ //-^/ ^ ^ ^ ;e A )
^ l,S(/.l-£j^o^ ^ c:' V At/r?rj
(JP 0^,00
l/sijoC
5^ ^
k"'~Qj\, - Co.\)(M9) ^ 0.013
Jo = H A{\r)h- '^MMyiiJ-^ // H ^>/uu rr r
C:: fc?.9o)Cf.9o) ^ CO,$-7^(0.soy ^ Or^^
J^oo- y.v*'/{z,-?)(F.^j'i'^^^^^ -y./n^A^t.^
Qioo"^ 0<c^ C4S ^/ -r^' ^.o Mi/vitmj
NOTE:
Time and Discharge values were obtained using County of San Diego Rational Method H /drograph software
i prepared by Rick Engineering Company copyright 2001.
! i
Detention Basin #1
1
TIME DISCHARGE
0 175 0.8 350 0.4
7 1 0.4 182 0.9 357 0.4
14 1 0.4 189 1 364 0
21 i 0.4 196 1
28 i 0.4 203 1.2
35 0.4 210 1.3
42 0.4 217 1.6
49 0.4 224 1.8
56 0.4 231 2.6
63 0.5 238 4.9
70 0.5 245^ 12.2
77 0.5 252 2.1
84 0.5 259 1.4
91 0.5 266 1.1
98 0.5 273 0.9
^105 0.5 280 0.8
112 i 0.5 287 0.7
119 1 0.6 294 0.7
126 i 0.6 301 0.6
133 i 0.6 308 0.6
140 0.6 315 0.5
L_147 0.7 322 0.5
154 0.7 329 0.5
161 0.7 336 0.4
168 0.8 343 0.4 Ox
HYDROGRAPH
14
12
10
CO 8
LL
O
o
« 3^So rtCitxrnLti:^
^pi^ouiDE ?ooir ^g"Puc^ ptps^
^ >^ r^ ^ <b^ C,* ^N'I' ^ ^ ^ ^ ^ ^ r^ ^ # 4^
TIME (MIN) 0
If -7*^
I ^IZ />v<L £>cri LC7 P'pg-
APPENDIX
San Dicgo County Hydrology Manual
Dale: June 2003 Section:
Page: 3
6 of 26
>
I
Table 3-1
RUNOFF COEFFICIENTS FOR URBAN AREAS
Land Use Runoff Coefficient "C"
Soil Type
NRCS Elements County Elements % IMPER. A B C D
Undisturbed Natural Terrain (Natural) Permanent Open Space 0* 0.20 0.25 ' 0.30 0.35
Low Density Rcsidential (LDR) Residential, 1.0 DU/A or less 10 0.27 0.32 0.36 0.41
Low Density Residential (LDR) Residential. 2.0 DU/A or less 20 0.34 0.38 0.42 0.46
Low Density Residential (LDR) Residential, 2.9 DU/A or less 25 0.38 0.41 0.45 0.49
Medium Density Residential (MDR) Residential, 4.3 DU/A or less 30 0.41 0.45 0.48 0.52
Medium Density Residential (MDR) Residential, 7.3 DU/A or less 40 0.48 0.51 0.54 0.57
Medium Densiiy Residential (MDR) Residential, 10.9 DU/A or less 45 0.52 0.54 0.57 0.60
Medium Density Residentiai (MDR) Residential, 14.5 DU/A or less 50 0.55 0.58 0.60 0.63
High Density Residential (HDR) Residential, 24.0 DU/A or less 65 0.66 0.67 0.69 0.71
High Density Residential (HDR) Residential, 43.0 DU/A or less 80 0.76 0.77 0.78 0.79
Commercial/Industrial (N. Com) Neighborhood Commercial 80 0.76 0.77 0.78 0.79
Commercial/Industrial (G. Com) General Commercial 85 0.80 0.80 0.81 0.82
Commercial/Industrial (O.P. Com) OfYice Professional/Commercial 90 0.83 0.84 0.84 0.85
Commercial/Industrial (Limited L) Limited Industrial 90 0.83 0.84 0.84 0.83
Commercial/Industrial (General I.) General Industrial 95 0.87 0.87 0.87 0.87
*The values associated with 0% impervious may be used for direct calculation of the runoff coefficient as described in Section 3.1.2 (representing the pervious ninofT
coefficient, Cp, for the soil type), or for areas that will remain undisturbed in perpetuity. Justification must be given that the area will remain natural forever (e.g., the area
is located in Cleveland National Forest).
DUI.\ = dwelling units per acre
NRCS = National Resources Conservation Service
3-6
I
EXAMPLE:
Given: Watercourse Distance (D) = 70 Feet
Slope (s) = 1.3%
Runoff Coefficlant (C) 0.41
Overland Flew Time (T)= 9.5 Minutes
SOURCE: /Wrport Drainage, Federal Aviation Administration. 1965
1.8(1.1-0)'^
FIGURE
Rational Formula - Overiand Time of Flow Nomograph
Orange,
County
33*15:-
>
1
iVOOr-
32"45'
32'30r
33-3(r
M e
County of San Diego
Hydrology Manual
Rainfall Isopluvials
100 Year Rainfall Event - 6 Hours
Isopluvial (inches)
^G\S SanGIS
IMS Mar « mnOUl VIWIWMIT V Mt M«. tfr><M C
3 0 3 Miles
40 SO I
Ouration
DIrtctiorH for Applcalion:
(1) From predpitation rnaps delen-iine 6 hr and 24 hr amcunts
for ths se ected frequency. These maps a^e included in the
County Hydrology Manual (10.50. and ICO yr maps ncluded
in ihe Design and Procedtre Manuel).
(2) AdjusI 6 hr precipKaticn (if rtecassa^} so that it is v.iithin
Ihe range of 45% lo 65% of tha 2^ hr prBcipitation (not
applicaple to Desert).
(3) Plot 6 hr precipitation on the rigM side cf the chart.
(4) Dranw a line Ifvough tne point pa''allei to the picttec lines.
(5) Thb line is the intensity-deration curve for the locaticn
being analyzed.
Application Form:
(a) Selected frequency lOO year
fb)Pg= 17 •n..P2^= f-^
(c) Adjusted Pg*^' = in.
(d) 1^ = mn.
(e) I = _
•P 24
inj'hr
Note: This chart replaces the Intensily-Duration-Frequency
curves used siree 1965.
PS 1 1.S a TJS 3 3.5 4 4.5 S 5.5 8
DuiBtum 1 t 1 1 1 1 1 1 1 1
5 263 395 = 27 65» 7 -0 9 22 10.54 1-9= 13 17 * 49 1581
7 2.12 3.16 4.24 £.33 6.26 7.42 6.4S 9.5* 10.60 *1€6 12 72
10 1.66 2.S3 3.37 421 S.aa S.90 a 74 rsa 8.42 S2' 10 II
15 1.33 1 95 2SS 32« '3 B9 4 54 5 19 SBi 849 7 13 7 78
20 IOB 162 2 15 269 3 23 3.77' 431 485 539 5:3 S4C
2S 093 140 187 233 260 327 373 42) 467 513 sac
30 083 124 166 207 249 290' 33? i73 415 45« 496
0.69 1.03 1.38 1.72 2.07 2.41' 276 3 13 345 3 7$ 4 13
so 063 090 1.19 1.49 1.79 209 239 Z63 296 3 28 358
•0 0.S3 080 106 133 1.59 1 86 212 233 265 2r2 3 It
•0 0.41 o.«-CS2 I.02 1.23 1.43 1.63 l.8£ 2.» 2.2i 2 4S
120 034 05* C6« CBS ire 1 '9 1.36 163 1.70 • S7 2C4
150 029 044 CSS C73 OM 103 1 •» 137 147 •ii 1 7<
ISO 0.26 oas' "52 C6S 073 091 104 1 IS 131 : 44 1 57
240 022 0.33" :43 C54 065 076' 087 ' 099' 108 VIS 13C
soo 0.'9 020 : 30 C.*T o»s oee 0 7S o«i • 0.94 1.53 ' 13
sw 0.'7 'a.2s z.33 C.42 o.SO o.se' 0.67 0.7S 0.64 O.Si ' cc
FIGURE
Intenslty-Ouration OesIgn Chart • Tamplata
^^_„. '!'S.,...o^^T.O\\^P'oPE^fliANNW 7 iipi
7-42 HANDBOOK OF HVDRAULICS
K
Table 7-10. Values of K in Formula Q = - iJ^s!^ for
Trapezoidal Channels {Concluded)
D - depth of water 6 - bottom aidth ot channel
.81
.82
.83
84
85
86
.8'
.88 .89
.90
.91
.92
.93
1.94
1.95
1.96
1.9
1.98
1.99
2.00
2.01
2.02
2.03
2.04
2.05
2.06
2.07
2.08
2.09
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
2.18
2.19
2.20
2.21 2.22 2.23 2.24 2.2S
Side slopes of channel, ratio of horizontal to vertical
Ver-tical
.296
.293
.291
.289
.28R
K-1 >i-1
.284
.282 .270
.277
.275
.273
.270
.268
.266
.264
.262
.260
.258
.256
.254
.252
.250
.248
.247
.245
.243 .241 .239 .237 .236
.234 .232 .231 .229 .227
.226
.224
.223
.221
.219
.218
.216
.215
.213
.212
.000
.543
.540
.537
.534
.531
.528
.525
.522
.520 .517
514
512
509
,506
.504
.501
.499
.496
.494
.491
.489
.48;
.484
.482
.480
.47'
.475
.473 .471 .469
.466
.464
.462
.460
.458
.456 .454 .452 .450 .448
.446
.444
.442
.440
.439
.091
H-l
,817 813 810 807 ,804
801
,797 794 791
788
.785
.782
9
.776
.774
771
768
765
,762
,760
.757
.754
.752
.749
.746
.744 .741 .739 .736 .734
.732
.729
.727
.724
.722
.720
.718
.715
.713
.711
.709
.706
.704
.702
.700
.274
1.10
1.09
1.09
1.09
1.08
1.08 1.08
1.07
1.07 1.07
1.06
1.06
1.06
1.05
1.05
1.05 1.04 1.04 1.04 1.04
1.03
1.03
1.03
1.02
1.02
1.02
1.02
1.01
1.01
1.01
1.006
1.004
1.001
.999
.996
.994
.991
.989
.987
.984
1-1 iH-1
1.37
1.37
1.37
1.36
1.36
1.36
1.35
1.35
1.35
1.34
1.34
1.34
1.33
1.33
1.33
1.32
1.32
1.32
1.31
1.31
1.31
1.30
1.30
1.30
1.30
1.29
1.29
1.29
1.28
1.28
1.28
1.28
1.27
1.27
1.27
1.27
1.26
1.26
1.26
1.26
.982 .980 .977 .975 .973
.500
1.25
1.25
1.25
1.25
1.24
.743
90
1.90
1.90
1.89
1.89
1.88
1.88
1.88
1.87
1.87
1.87
1.86
1.86
1.86
1.85
1.85
1.85
1.84
1.84
1.84 1.83 1.83 1.83 1.82
1.82
1.82
1.82
1.81
1.81
1.81
1.81
1.80
1.80
1.80
1.79
1.79
1.79
1.79
1.78
1.78
1.78
1.78
1.77
1.77
1.24
2-1 2M-1
2 41
2.41
2.41
2.40
2.40
2.40 2.39 2.39 2.39 2.38
2.38
2.38
2.37 2.37
2.37
2.36
2.36
2.36
2.35
2.35
2.35
2.34
2.34
2.34
2.33
2.33 2.33 2.33 2.32 2.32
2.32 2.31 2.31 2.31 2.31
2.30 2.30 2.30 2.29 2.29
2.29
2.29
2.28
2.28
2.28
1.74
2.91
2.91
2.90
2.90
2.90
2.89
2.89
2.88
2.88
2.88
2.87
2.87
2.87
2.86
2.86
2.86
2.85
2.85
2.85
2.84
2.84 2.84 2.84 2.83 2.83
2.83
2.82
2.82
2.82
2.81
2.81
2.81
2.81
2.80
2.80
2.80
2.80
2.79
2.79
2.79
2.78
2.78
2.78
2.78
2.77
2.23
3-1
3.40 3.39 3.39 3.39 3.38
3.38 3.38 3.37 3.37 3.37
3.36
3.36
3.36
3.35
3.35
3.35
3.34
3.34
3.34
3.33
3.33
3.33
3.32
3.32
3.32
3.31
3.31
3.31
3.31
3.30
3.30
3.30
3.29
3.29
3.29
3.29
3.28
3.28
3.28
3.28
3.27
3.27
3.27
3.26
3.26
2.71
4-1
4.36
4.36
4.35
4.35
4.34
4.34 4.34 4.33 4.33 4.33
4.32
4.32
4.32
4.31
4.31
4.31
4.30
4.30
4.30
4.29
4.29
4.29
4.28
4.28
4.28
4.28
4.27
4 27
4.27
4.26
4.26
4.26
4.26
4.25
4.25
4.25
4.24
4.24
4.24
4.24
4.23
4.23
4.23
4.23
4.22
3.67
r
STEADY UNIFORM FLOW IN OPE5
Table 7-11. Values of K' in Formula Q = - W^s^^
Trapezoidal Channels
D = depth of water 6 = bottom ^idth of channel
<«<»
i
-1.5'-
i = .01
4 5 6 7 8 9 10
Discharge (C.F.S.)
EXAMPLE:
Given: Q> 10 S>2.5*/.
Chart gives: Depth s 0.4, Velocity » 4,4 f.p.s.
SOURCE: San Diego County Oepartment of Special Dislrict Services Design Manual
20 30 40 SO
FIGURE
Gutter and Roadway Discharge - Velocity Chart
ATTACHMENT D
APPENDIX
MONITORING RECORD
INSPECTION
DATE
DATE OF
STORM INSPECTOR
OBSERVATIONS/
COMMENTS
RECOMMENDATIONS
FOR REPAIR/
MAINTENANCE
DATE OF
MAINTENANCE
Date: Signed By:_
All amendments made to this SWMP shall be documented in this table.
DATE: BY: DESCRIPTION
Prepared By
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CONTACT
PERSON
PHONE
NUMBER
ALTERNATE
PHONE
NUMBER
ALTERNATE
CONTACT
PERSON
PHONE
NUMBER
Prepared By
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