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Preliminary WQTR for Veterans Villages New Resolve Low Income Housing Project

TABLE OF CONTENTS

SECTION PAGE

1.0 Certification............................................................................................................................ 1

2.0 Introduction............................................................................................................................ 1

3.0 Project Description................................................................................................................. 1

4.0 Existing Drainage Description ................................................................................................ 3

5.0 Proposed Drainage Description ............................................................................................. 3

6.0 Drainage Basin ...................................................................................................................... 3

7.0 Pollutants and Conditions of Concern .................................................................................... 3

8.0 Water Quality Environment .................................................................................................... 5

,'( 5LT 4JM?AQ 1CSCILMJCKQ /67ZP ........................................................................................... 6

)('( ;LROAC 0LKQOLI /67ZP........................................................................................................ 11

11.0 Selection of Permanent Stormwater Treatment Facilities ................................................... 13

11.1 Drainage Management Areas and Integrated Management Practices Sizing Calculations. 15

12.0 Hydromodification Management......................................................................................... 17

14.0 Operation and Maintenance Program ................................................................................ 18

14.0 Conclusion......................................................................................................................... 20

APPENDICES:

1.SUSMP Applicability Form

2.Drainage Basin Description and Beneficial Uses

3.Design Criteria for Bioretention Facilities, Self-Retaining Area and Self-Treating Area -

Excerpt from the City of San Diego SUSMP Manual dated January 2011

4.Hydromodification Management Documentation

EXHIBIT (POCKET)

Storm Water Treatment and Hydromodification Exhibit

Preliminary WQTR for Veterans Villages New Resolve Low Income Housing Project2

This project proposes the removal of most existing site improvements for the construction of low-income three-story apartment buildings, a clubhouse, offices, retail spaces, parking lot andperimeter landscaping.

Post construction permanent BMP for this project includes bio-retention facilities, self-retaininglandscape areas and self-treating areas.


4.0 Existing Drainage Description

The property is currently developed with attached multi-family residential buildings, paved parkinglot, covered carport, swimming pool and landscaping. Runoff from the property drains by surfaceflow to South Escondido Boulevard via a ribbon gutter. Storm water travels southerly via gutterflow in South Escondido Boulevard for approximately 280 feet and discharges to an existing curbinlet in South Escondido Boulevard. Runoff is conveyed to a hard line City of Escondido stormdrain system for 4,200 feet. The storm drain travels from South Escondido Boulevard westerly andsoutherly to West Felicita Avenue. It then travels southerly through private properties and outletsto an existing earthen conveyance northwest of the Kit Carson Park. The final destination of runoffis the east side of the San Elijo Lagoon.

5.0 Proposed Drainage Description

Runoff from roofs of the proposed easterly and southerly buildings, portion of the existing adobehouse and portion of the existing northerly building, parking lot, hardscape areas and adjacentlandscape areas surface drains to bio-retention basins. Runoff from roofs of portions of theexisting adobe house and existing northerly building drains to self-retaining landscape areas.Storm water from the entire site enters an underground storm drain system. The undergroundstorm drain system will run westerly and southerly in South Escondido Boulevard. The proposedpublic storm drain pipe will connect to an existing curb inlet in the easterly curb of SouthEscondido Boulevard. The existing curb inlet is located approximately 280 feet south of the projectsite.

6.0 Drainage Basin

The project is located in the Carlsbad Hydrologic Unit 904.00, Escondido Creek Hydrologic Area904.60 and Escondido Hydrologic Sub-area 904.62 according to the San Diego Regional Water8R?IGQU 0LKQOLI /L?OBZP $;19>80/% >?QCO 8R?IGQU 0LKQOLI 7Ian for the San Diego Basin. Thetotal drainage area of the hydrologic unit is approximately 210 square miles. Runoff from the siteand portions of the hydrologic subarea ultimately drains to San Elijo Lagoon and then to PacificOcean.

7.0 Pollutants and Conditions of Concern

The following table lists pollutants of concern that are anticipated or can potentially exist atproposed priority development project site. The table is from the City of Escondido SUSMPmanual dated January 2011.The project falls within the attached residential development andparking lots priority project categories (highlighted in the table). All of the listed pollutants areeither anticipated or can potentially exist at the developed.


The receiving waters for the site is the San Elijo Lagoon. According to the 2010 303(d) listapproved by the State Water Resources Control Board (and by the US EPA in November 2010),Escondido Creek is 303(d) listed for DDT, enterococcus, fecal coliform, manganese, phosphate,selenium, sulfates, total dissolved solids, total nitrogen as N, and toxicity. San Elijo Lagoon is303(d) listed for eutrophic, indicator bacteria, and sedimentation/siltation. Based on thisinformation, the project generates pollutants of concern in the receiving waters for sediments,nutrients, heavy metals, and organic compounds.


8.0 Water Quality Environment

Beneficial Uses

The following beneficial uses for the hydrologic unit have been extracted from the Water QualityControl Plan for the San Diego Basin.

MUN V Municipal and Domestic Supply: Includes uses of water for community, military, orindividual water supply systems including, but not limited to, drinking water supply.

AGR V Agricultural Supply: Includes uses of water for farming, horticulture, or ranching including,but not limited to, irrigation, stock watering, or support of vegetation for range grazing.

IND V Industrial Service Supply: Includes uses of water for industrial activities that do not dependprimarily on water quality including, but not limited to, mining, cooling water supply, hydraulicconveyance, gravel washing, fire protection, or oil well re-pressurization.

REC1 V Contact Water Recreation: Includes uses of water for recreational activities involving bodycontact with water, where ingestion of water is reasonably possible. These uses include, but arenot limited to, swimming, wading, water-skiing, skin and SCUBA diving, surfing, white wateractivities, fishing, or use of natural hot springs.

REC2 V Non-Contact Water Recreation: includes the uses of water for recreational activitiesinvolving proximity to water, but not normally involving body contact with water, where ingestion ofwater is reasonably possible. These uses include, but are not limited to, picnicking, sunbathing,hiking, beachcombing, camping, boating, tide pool and marine life study, hunting, sightseeing, oraesthetic enjoyment in conjunction with the above activities.

BIOL V Preservation of Biological Habitats of Special Significance: Includes uses of water thatsupport designated areas or habitats, such as established refuges, parks, sanctuaries, ecologicalreserves, or Areas of Special Biological Significance (ASBS), where the preservation orenhancement of natural resources requires special protection.

EST V Estuarine Habitat: Includes uses of water that support estuarine ecosystems including, butnot limited to, preservation or enhancement of estuarine habitats, vegetation, fish shellfish, orwildlife (e.g., estuarine mammals, waterfowl, shorebirds).

WARM V Warm Freshwater Habitat: Includes uses of water that support water ecosystemsincluding, but not limited to, preservation or enhancement of aquatic habitats, vegetation, fish orwildlife, including invertebrates.

WILD V Wildlife Habitat: Includes uses of water that support terrestrial ecosystems including, butnot limited to, preservation and enhancement of terrestrial habitats, vegetation, wildlife (e.g.,mammals, birds, reptiles, amphibians, invertebrates), or wildlife water and food sources.

RARE V Rare, Threatened, or Endangered Species: Includes the uses of water that supporthabitats necessary, at least in part, for the survival and successful maintenance of plant or animalspecies established under state or federal law as rare, threatened or endangered.


MAR V Marine Habitat: Includes uses of water that support marine ecosystems including, but notlimited to, preservation or enhancement of marine habitats, vegetation such as kelp, fish, shellfish,or wildlife (e.g., marine mammals, shorebirds).

MIGR V Migration of Aquatic Organisms: Includes uses of water that support habitats necessaryfor migration, acclimatization between fresh and salt water, or other temporary activities by aquaticorganisms, such as anadromous fish.

SPWN V Spawning, Reproduction, and/or Early Development: Includes uses of water that supporthigh quality aquatic habitats suitable for reproduction and early development of fish. This use isapplicable only for the protection of anadromous fish.

SHELL V Shellfish Harvesting: Includes uses of water that support habitats suitable for thecollection of filter-feeding shellfish (e.g., clams, oysters, and mussels) for human consumption,commercial or sport purposes.

Ground Waters

Ground Waters associated with the project have the following beneficial uses:

Beneficial Uses for Ground Waters

HydrologicSub-AreaNumber M

UN

AG

R

IND

904.62 HSA

Existing Beneficial UseO Potential Beneficial Use

9.0 +6> *47./; )1=1367415; ',-?9

Low Impact Development (LID) BMPs must be incorporated into the site design to meet theCity of 2PALKBGBLZP January 2011 SUSMP requirements. The LID outlines four strategies:

1. Optimize the site layout by preserving natural drainage features and designingbuildings and circulation to minimize the amount of roofs and paving.

2. Use pervious surfaces such as turf, gravel, or pervious pavementWor use surfaces thatretain rainfall. All drainage from these surfaces is considered to be XPCID-OCQ?GKCBY'

3. Disperse runoff from impervious surfaces on to adjacent pervious surfaces (e.g.,direct a roof downspout to disperse runoff onto a lawn).

4. Drain impervious surfaces to engineered Integrated Management Practices (IMPs),such as bioretention facilities, planter boxes, cisterns, or dry wells. IMPs infiltrate runoffto groundwater and/or percolate runoff through engineered soil and allow it to drainaway slowly.


The project design is in compliance with these strategies. The site layout has been designedfor only the amount of roofs and paving needed. Drive aisles and sidewalks are designed tohave minimum widths to minimize imperviousness.

Runoff from sidewalk and parking lot will drain to adjacent landscape areas to the maximumextent practical.

The following concepts are to be evaluated for use where applicable:

a. Where required by the Environmentally Sensitive Lands regulations of the LandDevelopment Code (LDC 142.01, et. Seq.) conserve natural areas, provide buffer zonesbetween natural water bodies and the project footprint, preserve existing native trees andshrubs, and concentrate or cluster development on the least environmentally sensitiveportions of a site.

Response: There are no natural areas, natural waterbodies, existing native trees, etc. withinthe project footprint. The project will be constructed on a previously developed site withsimilar land use.

b. Minimize impervious footprint.

Response: The project proposes increase in building density through the construction ofthree-story buildings to minimize increase in impervious footprint. Landscaping is proposedaround the perimeter of the project site to minimize impervious footprint.

c. Minimize directly connected impervious areas.

Response: Runoff from the parking lot and roof downspouts will drain to adjacent landscapearea prior to entering a storm drain system.

d. Minimize soil compaction in landscape areas.

Response: Soil compaction in landscaping areas will be minimized to the extent feasible asrecommended by the Geotechnical Engineer.

e. Soil amendments.

Response: Topsoil improvements will be used as necessary to maintain the health oflandscaping.

f. Convey runoff safely from the top of slopes.

Response: The project site is flat. There are no slopes proposed for the new development.

g. Vegetate slopes with native or drought tolerant vegetation.

Response: The project site is flat. The site will be vegetated with native or drought tolerantvegetation.


h. Install energy dissipaters, such as riprap, at the outlets of new storm drains, culverts,conduits, or channel that enter unlined channels in accordance with applicable specificationsto minimize erosion.

Response: The project does not propose storm drain, culvert, conduit, or channel outletsthat drain directly to unlined channels so energy dissipaters are not needed for drainageoutlets. All of the project runoff will either enter a storm drain system or retained inlandscaped areas.

Principles of LID and Applicability to Project

1. Conserve natural resources that provide valuable natural functions associated withcontrolling and filtering storm water.

Response: This project site was previously developed. It does not contain native naturalresources.

2. Minimize & disconnect impervious surfaces.


3. Direct Runoff to natural and landscaped areas conducive to infiltration.

Response: Runoff from the parking lot and roof downspouts will drain to adjacent landscapearea and bio-retention basins prior to entering a storm drain system.

4. Use distributed small-scale controls or Integrated Management Practices (IMPs) to mimic-(' ,)-'., *+'-project hydrology.

Response: Runoff from the parking lot and roof downspouts will drain to landscaped areasand bio-retention basins to allow to percolate before conveyance to underground stormdrain.

5. Storm water education leads to pollution prevention.

Response: Information regarding storm water pollution prevention will be provided to therenters and employees.

Goals of LID and Applicability to Project:

1. Protect Water Quality.

Response: Through the use of structural treatment devices and disconnecting impervioussurfaces this project will protect water quality to the Maximum Extent Possible (MEP).

2. Reduce Runoff.

Response: This project will not reduce runoff but will provide underground storage facilityfor hydromodification management. The project will provide flow control device to managethe increase in discharge flow.


3. Reduce Impervious Surfaces.

Response: The project will increase building density through the construction of multi-storybuildings to minimize the increase in impervious surface.

4. Encourage Open Space.

Response: This is a previously developed site within a developed community. Thedevelopment is consistent with existing zoning and no open space is required within theproject footprint.

5. Protect Significant Vegetation.

Response: There is no significant vegetation on-site.

6. Reduce Land Disturbance.

Response: This is a previously deSCILMCB BGPQRO@CB PGQC' <FC MOLHCAQZP I?KB BGPQRO@?KAC TGIInot extend beyond areas already disturbed.

7. Decrease Infrastructure Costs.

Response: The onsite storm drain system will connect to the existing City of Escondidostorm drain system as a condition of approval of the project.

Benefits of LID and Applicability to Project:

1. Reduces non-point source pollution.

Response: Regular parking lot sweeping and cleaning will occur. General cleaning of litterand trash will occur.

2. Reduces habitat degradation.

Response: This is a site within a fully developed urban setting. There is no natural nativehabitat.

3. Applicable to greenfield, brownfields, and urban developments.

Response: Not applicable to this development.

4. Multiple benefits beyond storm water (aesthetics, quality of life, air quality, waterconservation, property values).

Response: The existing land use of the site is maintained and is consistent withsurrounding properties.

5. Meets Total Maximum Daily Loads (TMDL) and other storm water requirements.

Response: The expected TMDL completion date for San Elijo Lagoon is 2015 and 2019.


LID Site Planning and Applicability to Project:

The following site design strategies will be implemented where applicable and feasible. These aresimilar to the above discussions:

1. Conserve natural areas, soils and vegetation.

Response: There are no native natural areas or vegetation on-site.

2. Minimize disturbances to natural drainages.

Response: There are no natural drainages on-site.

3. Minimize and disconnect impervious surfaces.


4. Minimize soil compaction.

Response: Soil compaction will be minimized based on maximum amount allowed by thegeotechnical engineer.

5. Drain runoff from impervious surfaces to pervious areas.



10.0 Source Control ',-?9

Source control BMPs will consist of measures to prevent polluted runoff. The followingaddresses the source control BMPs from Appendix A of the City of Escondido SUSMP datedJanuary 2011:

Table 10-1 Pollutant Sources and Source Control Checklist

Potential Sourceof Runoff Pollutants

Permanent SourceControl BMPs

Operational SourceControl BMPs

On-site storm draininlets

Mark all inlets with the words9(3 Dumping 8 I live-372564.,1; or similar.

# Maintain and periodicallyrepaint inlet markings

# Provide stormwater pollution

information to owners,lessees, and operators (Fact

sheet SC- 44 from theCASQA Stormwater Quality

Handbook atwww.cabmphandbooks.com)

# Include the following in leaseagreements, X<CK?KQ shall notallow anyone to dischargeanything to storm drains or tostore or deposit materials soas to create a potentialBGPAF?OEC QL PQLOJ BO?GKPY'

Need for futureindoor & structuralpest control

Buildings shall be designed toavoid openings that wouldencourage entry of pests.

Integrated Pest Management (e.g.,the &)%<5 $(,(-').+ Guide to PestControl and Pesticide Safety)information shall be provided toowners, lessees, and operators.


Landscape/OutdoorPesticide Use

Final landscape plans willaccomplish all of thefollowing.

# Design landscaping tominimize irrigation andrunoff, to promote surfaceinfiltration whereappropriate, and to minimizethe use of fertilizers andpesticides that cancontribute to stormwaterpollution.

# Where landscaped areasare used to retain or detain

stormwater, specify plantsthat are tolerant of

saturated soil conditions.

# Consider using pest-resistant plants, especiallyadjacent to hardscape.

# To ensure successfulestablishment, select plantsappropriate to site soils,slopes, climate, sun, wind,rain, land use, air movement,ecological consistency, andplant interactions

Maintain landscaping usingminimum or no pesticides.

See applicable operational BMPsin Fact Sheet SC-41, "Building andGrounds Maintenance," and TC-30, 9+./.6,6.- *7,0.$; in theCASQA Stormwater QualityHandbooks atwww.cabmphandbooks.com

Integrated Pest Management (e.g.,the &)%<5 $(,(-').+ Guide to PestControl and Pesticide Safety)information shall be provided toowners, lessees, and operators.

Roofing, gutters, andtrim

The architectural design willavoid roofing, gutters, and trimmade of copper or otherunprotected metals that mayleach into runoff.


Plazas, sidewalks,and parking lots.

Plazas, sidewalks, and parking lotsshall be swept regularly to preventthe accumulation of litter anddebris. Debris from pressurewashing shall be collected toprevent entry into the storm drainsystem. Wash water containingany cleaning agent or degreasershall be collected and dischargedto the sanitary sewer and notdischarged to a storm drain.

Low Impact Development (LID) BMPs must be incorporated into the site design to meet theCity of 2PALKBGBLZP January 2011 SUSMP requirements. The LID outlines five strategies:

1. Optimize the site layout by preserving natural drainage features and designingbuildings and circulation to minimize the amount of roofs and paving.

2. Use pervious surfaces such as turf, gravel, or pervious pavementWor use surfaces thatretain rainfall. All drainage from these surfaces is considered to be XPCID-OCQ?GKCBY'

3. Disperse runoff from impervious surfaces on to adjacent pervious surfaces (e.g.,direct a roof downspout to disperse runoff onto a lawn).

4. Drain impervious surfaces to engineered Integrated Management Practices (IMPs),such as bioretention facilities. IMPs infiltrate runoff to groundwater and/or percolaterunoff through engineered soil and allow it to drain away slowly.

The proposed development is optimizing the site layout by integrating the construction ofmultiple story buildings to minimize roof and impervious areas.

Self-treating and self-retaining landscape areas will be provided around the perimeter of thebuildings to the maximum extent practical.

Runoff from parking lot, hardscape and building downspouts will drain to the adjacentlandscape areas before entering the underground storm drain system.

Runoff from parking lot, hardscape and building downspouts will drain to bioretention facilitiesor self-retained landscape areas for treatment.

11.0 Selection of Permanent Stormwater Treatment Facilities

For the anticipated and potential pollutants coming from the proposed project, bio-retentionfacilities, self-retaining landscaped areas and self-treating landscaped areas and perviouspavement were selected for treatment. Table 2-2 of the City of Escondido SUSMP dated January2011 defines the effectiveness of treatment facilities. It has medium to high efficiencies in treatingpollutants of concern. It will collect and treat runoff discharging from the roofs and imperviouswalkways and parking lot.


11.1 Drainage Management Areas and Integrated Management Practices SizingCalculations

A) Bio-Retention Treatment Calculation Methodology:

See Appendix 3 for excerpt from the City of Escondido SUSMP dated January 2011 for designcriteria of bioretention facilities and treatment calculation methodology.

See below for treatment calculations.


B) Self-Retaining Area Treatment Calculation Methodology:

See Appendix 3 for excerpt from the City of Escondido SUSMP dated January 2011 for designcriteria of self-retaining area and treatment calculation methodology.


C) Self-Treating Area Treatment Calculation Methodology:

See Appendix 3 for excerpt from the City of Escondido SUSMP dated January 2011 for designcriteria of self treating area and treatment calculation methodology.



12.0 Hydromodification Management

The project proposes the installation of underground storage facility to comply with the City ofEscondido Hydromodification flow control requirements. It will mitigate the difference in volume ofrunoff between the existing project conditions and proposed redevelopment conditions due to theincrease in impervious areas. The underground storage facility will have a metered (orificecontrolled) peak discharge of 10 percent of the 2-year storm and will have an overflow/bypasspipe to drain the 100-year storm event. The vault volume sizing factor is 0.22. See Appendix 4 forsizing factor of Bioretention Plus Vault Facilities in the Lake Wohlford Rain Gauge.

See below for calculations of the storage volume of runoff and length of storage facility.

Proposed Impervious Area = 55,960 SFExisting Impervious Area = 49,000 SF

Difference = 6,960 SF (increase)

Size of Vault/Storage Facility = 6,960 x 0.22 = 1531 CY

.OC? LD )+Y 7GMC - )'** ;3

Length of Storage Facility required = 1531 CY/1.77 SF= 865 LF

13%& (659;8</;265 ',-?9

During construction, the contractor shall refer to the Water Pollution Control Plan (prepared forconstruction documents) for detailed information about construction BMPs and theirimplementation. However, below is a list of some construction BMPs which could be proposed:

1. Gravel bags, silt fences, straw waddles, etc.

2. A concrete washing and spoils area.

3. Construction staging areas will be protected from runoff and scattering by wind.

4. Construction dumpsters will be located so that runoff cannot escape.

5. The contractor will instruct his employees and subcontractors on the potential impacts andcontrol of pollution.

6. During the rainy season erosion control facilities will be in place. At other times they will bestockpiled on site already for installation when a storm event is predicted.

The contractors are required to prevent any construction related materials, wastes, spills orresidues from entering a storm water conveyance system and to apply for coverage under theState General Construction Permit as applicable for the site.


14.0 Operation and Maintenance Program

The property owner will be responsible for maintaining the property so that the BMPs provided canfunction effectively. This will include oversight of any contractor hired, e.g. a landscapemaintenance company.

The operation and maintenance requirements for each type of BMP and IMP are as follows:

Bio-Retention basins and Landscape Areas:

The operational and maintenance needs of Landscape Areas are:

# Vegetation management to maintain adequate hydraulic functioning and to limit habitat fordisease-carrying animals.

# Trash, debris, grass trimmings, tree pruning, and leaf collection.

# Removal of standing water, which may contribute to the development of aquatic plantcommunities or mosquito breeding areas.

# Removal of graffiti.

# Erosion and structural maintenance to prevent the loss of soil and maintain the performanceof the slopes as appropriate.

The Slopes will be inspected and inspection visits will be completely documented asappropriate:

# Once a year at minimum

# After extended periods of wet weather.

Aesthetic maintenance is important for public acceptance of new facilities. Functionalmaintenance of slopes is important for performance and safety reasons. Both forms ofmaintenance will be combined into an overall Storm Water Management System Maintenance.

The following activities will be included in the aesthetic maintenance program:

# Grass Trimming. Trimming of grass will be done around fences, at the inlets and outletstructures, and sampling structures.

# Weed Control. Weeds will be removed through mechanical means. Herbicide will not beused because these chemicals may impact the water quality monitoring.

Functional maintenance has two components which consist of preventative maintenance andcorrective maintenance

Preventative Maintenance activities to be instituted for Landscape Areas are:

# Grass Mowing. Vegetation is designed to be kept short to limit the development of faunalhabitats.

# Trash and Debris. During each inspection and maintenance visit to the site, debris andtrash removal will be conducted to reduce the potential for inlet and outlet structures andother components from becoming clogged and inoperable during storm events.


# Sediment Removal. Sediment accumulation, as part of the operation and maintenanceprogram in landscape areas will be monitored. Standing water must be removed if itcontributes to the development of aquatic plant communities or mosquito breeding areas.

# Mechanical and Electronic Components. Regularly scheduled maintenance will beperformed on fences, gates, locks, and sampling and monitoring equipment in accordanceTGQF QFC J?KRD?AQROCOPZ OCALJJCKB?QGLKP'

# Fertilization and Irrigation. The irrigation system and fertilization (if necessary) will beprofessionally designed and maintained.

# Elimination of Mosquito Breeding Habitats. The most effective mosquito control program isone that eliminates potential breeding habitats.

Corrective maintenance is required on an emergency or non-routine basis to correct problemsand to restore the intended operation and safe function of landscape areas and slopes.Corrective maintenance activities include:

# Removal of Debris and Sediment. Sediment, debris, and trash, which prevent vegetativegrowth, will be removed and properly disposed. Temporary arrangements will be made forhandling the sediments until a permanent arrangement is made. Vegetation will bereestablished after sediment removal.

# Structural Repairs. Once deemed necessary, repairs to structural components of a Slopewill be done within 10 working days. Qualified individuals (i.e., the designers andcontractors) will conduct repairs where structural damage has occurred.

# Erosion Repair. Where a reseeding program has been ineffective, or where other factorshave created erosive conditions (i.e., pedestrian traffic, concentrated flow, etc.), correctivesteps will be taken to prevent loss of soil and any subsequent danger to the performance ofa slope. There are a number of corrective actions that can be taken. These include erosioncontrol blankets, riprap, sodding, or reduced flow through the area. Designers orcontractors will be consulted to address erosion problems if the solution is not evident.

# Elimination of Animal Burrows. Animal burrows will be filled and steps taken to remove theanimals if burrowing problems continue to occur (filling and compacting). If the problempersists, vector control specialists will be consulted regarding removal steps. This consultingis necessary as the threat of rabies in some areas may necessitate the animals beingdestroyed rather than 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 associatedcomponents. If corrective maintenance is being done to one component, other componentswill be inspected to see if maintenance is needed.

Hazardous Waste

Suspected hazardous wastes will be analyzed to determine disposal options. Hazardouswastes 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 itexceeds the criteria listed in the CCR, Title 22, Article 11.

The following table shows the Maintenance and Inspection Plan for the proposed BMPs. Thistable should be used for reference for the maintenance of the permanent BMPs. Maintenancefrequency/activities should be increased as necessary to have the BMPs functioning properly.


O&M RESPONSIBLE PARTY DESIGNEE: OWNER

POST-CONSTRUCTION

PERMANENT BMP'S

INSPECTIONFREQUENCY

MAINTENANCEFREQUENCY

MAINTENANCEMETHOD

SERVICEFREQUENCY

SERVICEMETHOD

LANDSCAPE MAINTENANCE WEEKLY WEEKLY MANUAL LABOR MONTHLY

VERIFY HEALTHOF GROWING

MEDIUM,MOWING ANDWEEDING AS

NEEDED

BIO RETENTION BASIN

WEEKLY ANDPRE/POST

RAINYSEASON

WEEKLY ANDPRE/POSTRAINY SEASON

REMOVE TRASH,DEBRIS, SEDIMENT,AND TRIM PLANTING MONTHLY

VERIFY HEALTHOF GROWINGMEDIUM ANDINFILTRATION

It is acknowledged that the Owner/Developer will enter into a Storm Water Management andDischarge Control Maintenance Agreement with the City of Escondido during final engineeringphase of the project.

14.0 Conclusion

The potential sources of pollution for this project have been identified. With the incorporation of theBCPGEK CICJCKQP BGPARPPCB GK QFGP OCMLOQ ?KB QFC RPC LD /67ZP BROGKE ALKPQORAQGLK ?KB MLPQconstruction, pollution to downstream water bodies will be minimized to the maximum extentpractical.

APPENDIX 1

SUSMP Applicability Checklist

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APPENDIX 2

Drainage Basin Information

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APPENDIX 3

Design Criteria for Bioretention Facilites, Self-Retaining Areas

and Self-Treating Areas

(Excerpt from the City of Escondido SUSMP dated January 2011)

APPENDIX 4

Hydromodification Management Documentation

(Excerpt from the City of Escondido

Hydromodification Plan dated January 2011)

table of contents - escondido€¦ · development code (ldc 142.01, et. seq.) conserve natural...

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