Coastal San Luis Obispo County Water Quality Assessment May 15, 2008 Tamara Presser & Matt Thompson...

Coastal San Luis Obispo Coastal San Luis Obispo County Water Quality County Water Quality

AssessmentAssessmentMay 15, 2008May 15, 2008

Tamara Presser & Matt ThompsonTamara Presser & Matt Thompson

Storm Water ProgramStorm Water Program

Central Coast Regional Water Quality Control BoardCentral Coast Regional Water Quality Control Board

22

City of San Luis ObispoCity of San Luis Obispo

Coastal San Luis Obispo Communities:Coastal San Luis Obispo Communities:Morro BayMorro Bay

Pismo BeachPismo Beach

Arroyo GrandeArroyo Grande

Grover BeachGrover Beach

Baywood – Los Osos CSDBaywood – Los Osos CSD

Oceano CSDOceano CSD

33

Enrollment Schedule for City of San Luis ObispoEnrollment Schedule for City of San Luis Obispo

Apr 17Apr 17Feb 27Feb 279 weeks9 weeksPhase V: Water Board ActionPhase V: Water Board Action

Feb 26Feb 26Dec 1Dec 113 weeks13 weeksPhase IV: Water Board Staff Final Review Phase IV: Water Board Staff Final Review and Posting of SWMPand Posting of SWMP

Nov Nov 2828Oct 20Oct 206 weeks6 weeks

Phase III: MS4 SWMP Redraft Phase III: MS4 SWMP Redraft

Oct 17Oct 17May 26May 2621 weeks21 weeksPhase II: MS4 Finalization of Draft SWMP Phase II: MS4 Finalization of Draft SWMP and Water Board Staff and Public SWMP and Water Board Staff and Public SWMP Review Review

May May 2323NowNow5 weeks5 weeksPhase I: Water Board Staff Assessment Phase I: Water Board Staff Assessment

of Water Quality Challengesof Water Quality Challenges

EndEndBeginBeginLength of Length of ProcessProcess

TasksTasks

44

Enrollment Schedule for Coastal San Luis Obispo CountyEnrollment Schedule for Coastal San Luis Obispo County

Feb 6Feb 6Dec 8Dec 89 weeks9 weeksPhase V: Water Board ActionPhase V: Water Board Action

Dec 7Dec 7Sep 8Sep 814 weeks14 weeksPhase IV: Water Board Staff Final Review Phase IV: Water Board Staff Final Review and Posting of SWMPand Posting of SWMP

Sep 5Sep 5Jul 28Jul 286 weeks6 weeksPhase III: MS4 SWMP Redraft Phase III: MS4 SWMP Redraft

Jul 25Jul 25May 26May 269 weeks9 weeksPhase II: MS4 Finalization of Draft SWMP Phase II: MS4 Finalization of Draft SWMP and Water Board Staff and Public SWMP and Water Board Staff and Public SWMP Review Review

May May 2323NowNow5 weeks5 weeksPhase I: Water Board Staff Assessment Phase I: Water Board Staff Assessment

of Water Quality Challengesof Water Quality Challenges

EndEndBeginBeginLength of Length of ProcessProcess

TasksTasks

55

Pollutants of Concern (POCs)Pollutants of Concern (POCs)

““POCs consist of any pollutants that exhibit one or more of POCs consist of any pollutants that exhibit one or more of the following characteristics (Municipal Phase II General the following characteristics (Municipal Phase II General Permit): Permit):

Current loadings or historic deposits of the pollutant are Current loadings or historic deposits of the pollutant are impacting the beneficial uses of a receiving waterimpacting the beneficial uses of a receiving water

Elevated levels of the pollutant are found in sediments of Elevated levels of the pollutant are found in sediments of a receiving water and/or have the potential to a receiving water and/or have the potential to bioaccumulate in organisms thereinbioaccumulate in organisms therein

The detectable inputs of the pollutant are at The detectable inputs of the pollutant are at concentrations or loads considered potentially toxic to concentrations or loads considered potentially toxic to humans and/or flora and fauna."humans and/or flora and fauna."

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Pollutants of Concern (POCs)Pollutants of Concern (POCs)Pollutants of concern found in urban runoff include Pollutants of concern found in urban runoff include (Municipal Phase II General Stormwater Permit):(Municipal Phase II General Stormwater Permit):

SedimentsSediments Non-sediment solidsNon-sediment solids NutrientsNutrients PathogensPathogens Oxygen-demanding substancesOxygen-demanding substances Petroleum hydrocarbonsPetroleum hydrocarbons Heavy metalsHeavy metals FloatablesFloatables Polycyclic aromatic hydrocarbons (PAHs)Polycyclic aromatic hydrocarbons (PAHs) TrashTrash Pesticides and herbicides Pesticides and herbicides

77

POCs – City of San Luis ObispoPOCs – City of San Luis ObispoAddressed in April 2007 Draft Addressed in April 2007 Draft

Management PlanManagement Plan

PathogensPathogens NutrientsNutrients Priority OrganicsPriority Organics SedimentSediment ChlorineChlorine Oil and GreaseOil and Grease SurfactantsSurfactants TrashTrash

88

POCs – City of San Luis ObispoPOCs – City of San Luis ObispoImpaired WaterbodiesImpaired Waterbodies

NoNo

Yes – Address in Yes – Address in SWMPSWMP

Yes – AYes – Address in ddress in SWMPSWMP

Yes – Address in Yes – Address in SWMPSWMP

EPA EPA Approved Approved

TMDLTMDL

UnknownUnknownNitrate as Nitrate Nitrate as Nitrate (NO3)(NO3)

Prefumo Prefumo CreekCreek

Urban, Human, Urban, Human, Birds and Bats Birds and Bats Roosting in the Roosting in the Tunnel, Tunnel, LivestockLivestock

PathogensPathogens

SLO WWTP, SLO WWTP, AgricultureAgricultureNutrientsNutrients

SLO WWTPSLO WWTPNitrate as Nitrate Nitrate as Nitrate (NO3)(NO3)

San Luis San Luis Obispo Obispo CreekCreek

Potential Potential SourcesSourcesPollutantPollutantWaterbodyWaterbody

99

POCs – City of San Luis ObispoPOCs – City of San Luis ObispoAdditional ConcernsAdditional Concerns

San Luis Obispo San Luis Obispo CreekCreekLow Index of Biotic Low Index of Biotic Integrity (IBI Integrity (IBI measure of measure of biologic health based on biologic health based on the presence and quantity the presence and quantity of various species)of various species)Organochlorine Organochlorine PesticidesPesticidesMetals (Chromium) Metals (Chromium)

Prefumo CreekPrefumo Creek PathogensPathogens

Stenner CreekStenner Creek PathogensPathogens Low Index of Biotic Low Index of Biotic

IntegrityIntegrity

1010

POCs – City of San Luis ObispoPOCs – City of San Luis ObispoAdditional ConcernsAdditional Concerns

FFAACCAACCAAAvila Beach, projection Avila Beach, projection of San Luis Streetof San Luis Street

FFBBBBAADDAAAvila Beach, projection Avila Beach, projection of San Juan Streetof San Juan Street

WetWetDryDryWetWetDryDryWetWetDryDry

2004 - 20052004 - 2005

2005 – 20062005 – 20062006 - 20072006 - 2007Sampling SiteSampling Site

Heal the Ocean: ‘Report Card’Heal the Ocean: ‘Report Card’

1111

Possible Pollutant Sources – City of Possible Pollutant Sources – City of SLOSLO

Homeless encampments near San Luis Homeless encampments near San Luis Obispo CreekObispo Creek

Animals in San Luis Obispo CreekAnimals in San Luis Obispo Creek Old sewer lateralsOld sewer laterals Pet wastePet waste

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Future Projects – City of San Luis Future Projects – City of San Luis ObispoObispo

Orcutt Area Specific Orcutt Area Specific Plan – 231-acre Plan – 231-acre developmentdevelopment

Prefumo Creek Prefumo Creek Commons ProjectCommons Project

2007 Bicycle 2007 Bicycle Transportation Plan Transportation Plan UpdateUpdate

South Broad St. South Broad St. Corridor PlanCorridor Plan

Margarita Area Margarita Area Transit-Oriented Transit-Oriented DevelopmentDevelopment

SLO Airport Re-SLO Airport Re-DevelopmentDevelopment

Downtown Mixed-Downtown Mixed-Use ProjectsUse Projects Chinatown ProjectChinatown Project Garden St.Garden St.

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DiscussionDiscussion

What other water quality concerns What other water quality concerns can you identify that should be can you identify that should be addressed in San Luis Obispo’s addressed in San Luis Obispo’s SWMP?SWMP?

Identify POCs & SourcesIdentify POCs & Sources

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POCs – Morro BayPOCs – Morro Bay Impaired WaterbodiesImpaired Waterbodies

YesYes

Agriculture, Channel Agriculture, Channel Erosion, Channelization, Erosion, Channelization, Construction/Land Construction/Land Development, Resource Development, Resource ExtractionExtraction

Sedimentation/Sedimentation/SiltationSiltation

Morro Bay Morro Bay (including (including Chorro Chorro Creek, Los Creek, Los Osos Creek, Osos Creek, Morro Bay Morro Bay Estuary)Estuary)

YesYes

Natural Sources, Natural Sources, Nonpoint Source, Range Nonpoint Source, Range Grazing-Upland, Grazing-Upland, Septage Disposal, Septage Disposal, Urban Runoff/Storm Urban Runoff/Storm SewersSewers

PathogensPathogens

Morro Bay Morro Bay (including (including Chorro Chorro Creek, Los Creek, Los Osos Creek)Osos Creek)

NoNoUnknownUnknownDissolved OxygenDissolved OxygenMorro BayMorro Bay

Approved Approved TMDLTMDLPotential SourcesPotential SourcesPollutantPollutantWaterbodyWaterbody

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POCs – Morro BayPOCs – Morro Bay Additional ConcernsAdditional Concerns

Morro CreekMorro Creek PathogensPathogens

Toro CreekToro Creek PathogensPathogens

Morro BayMorro Bay Organochlorine Organochlorine

PesticidesPesticides Metals (Arsenic,Metals (Arsenic,

Cadmium)Cadmium)

1616


CCAACCAABBAAMorro Bay City Morro Bay City Beach, Morro Beach, Morro CreekCreek


2004 - 20052004 - 20052005 – 20062005 – 20062006 - 20072006 - 2007Sampling SiteSampling Site


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Morro Bay National Estuary Program:Morro Bay National Estuary Program:‘‘Stormwater Monitoring Report 2007’ – First Flush SamplingStormwater Monitoring Report 2007’ – First Flush Sampling

E. coliE. coli TurbidityTurbidity pHpH Total Dissolved Solids (TDS)Total Dissolved Solids (TDS) OrthophosphatesOrthophosphates Metals (Zinc, Copper, Nickel)Metals (Zinc, Copper, Nickel)

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Possible Pollutant Sources – Possible Pollutant Sources – Morro BayMorro Bay

Restaurant dischargesRestaurant discharges Harbor activitiesHarbor activities Boat washingBoat washing Street runoffStreet runoff LandscapingLandscaping Business maintenance and repairs (ie. Power Business maintenance and repairs (ie. Power

washing and painting related discharges)washing and painting related discharges) ConstructionConstruction Homeless encampments Homeless encampments

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What other water quality concerns What other water quality concerns can you identify that should be can you identify that should be addressed in the Morro Bay addressed in the Morro Bay SWMP?SWMP?


2020

POCs – Pismo BeachPOCs – Pismo Beach Impaired WaterbodiesImpaired Waterbodies

NoNoUnknownUnknownIndicatorIndicatorBacteriaBacteria

Pacific Ocean at Pacific Ocean at Pismo BeachPismo Beach

Approved Approved TMDLTMDL

Potential Potential SourcesSourcesPollutantPollutantWaterbodyWaterbody

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POCs – Pismo BeachPOCs – Pismo BeachAdditional ConcernsAdditional Concerns

Pismo CreekPismo Creek PathogensPathogens Low Index of Biotic Low Index of Biotic

IntegrityIntegrity


FFBBDDAACCCCPismo Beach Pier, Pismo Beach Pier, 50 feet south of pier50 feet south of pier


2004 - 20052004 - 20052005 – 20062005 – 20062006 - 20072006 - 2007Sampling SiteSampling Site

2222

Possible Pollutant Sources – Pismo Possible Pollutant Sources – Pismo BeachBeach

Birds at Pismo BeachBirds at Pismo Beach Homeless encampmentsHomeless encampments Septic SystemsSeptic Systems ConstructionConstruction Landscape fertilizersLandscape fertilizers Discharge of polluted groundwater to Discharge of polluted groundwater to

storm drainsstorm drains

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Future Projects – Pismo BeachFuture Projects – Pismo Beach

Amendment to General Plan Land Use Amendment to General Plan Land Use Element to include expansion Element to include expansion opportunities for residential land useopportunities for residential land use

Mixed-use Developments:Mixed-use Developments: Price St.Price St. Five Cities Dr.Five Cities Dr.

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What other water quality concerns What other water quality concerns can you identify that should be can you identify that should be addressed in Pismo Beach’s addressed in Pismo Beach’s SWMP?SWMP?


2525

POCs – Arroyo GrandePOCs – Arroyo Grande ConcernsConcerns

Arroyo Grande CreekArroyo Grande Creek High Toxicity LevelsHigh Toxicity Levels PathogensPathogens Index of Biotic IntegrityIndex of Biotic Integrity

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Possible Pollutant Sources – Possible Pollutant Sources – Arroyo GrandeArroyo Grande

None identified so far.None identified so far.

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Future Projects – Arroyo GrandeFuture Projects – Arroyo Grande

Newsom Springs Regional Master Newsom Springs Regional Master Drainage Plan – Stormwater drainage Drainage Plan – Stormwater drainage improvements to reduce city flooding improvements to reduce city flooding (project area: 1,240 acres)(project area: 1,240 acres)

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What other water quality concerns What other water quality concerns can you identify that should be can you identify that should be addressed in Arroyo Grande’s addressed in Arroyo Grande’s SWMP?SWMP?


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POCs – Grover BeachPOCs – Grover Beach

None identified so far.None identified so far.

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What water quality concerns can What water quality concerns can you identify that should be you identify that should be addressed in Grover’s SWMP?addressed in Grover’s SWMP?


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POCs – Baywood/Los OsosPOCs – Baywood/Los OsosImpaired WaterbodiesImpaired Waterbodies

YesYes

Agriculture, Channel Agriculture, Channel Erosion, Erosion, Channelization, Channelization, Construction/Land Construction/Land Development, Development, Resource ExtractionResource Extraction

Sedimentation/Sedimentation/SiltationSiltation

Morro Bay Morro Bay (including (including Chorro Chorro Creek, Los Creek, Los Osos Creek, Osos Creek, Morro Bay Morro Bay Estuary)Estuary)

YesYes

Natural Sources, Natural Sources, Nonpoint Source, Nonpoint Source, Range Grazing-Range Grazing-Upland, Septage Upland, Septage Disposal, Urban Disposal, Urban Runoff/Storm SewersRunoff/Storm Sewers

PathogensPathogens

Morro Bay Morro Bay (including (including Chorro Chorro Creek, Los Creek, Los Osos Creek)Osos Creek)

NoNoUnknownUnknownDissolved OxygenDissolved OxygenMorro BayMorro Bay

Approved Approved TMDLTMDL

Potential SourcesPotential SourcesPollutantPollutantWaterbodyWaterbody

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POCs – Baywood/Los OsosPOCs – Baywood/Los Osos Additional ConcernsAdditional Concerns

Morro BayMorro Bay Organochlorine PesticidesOrganochlorine Pesticides Metals (Arsenic, Cadmium)Metals (Arsenic, Cadmium)

3333

POCs – Baywood/Los OsosPOCs – Baywood/Los OsosAdditional ConcernsAdditional Concerns

Morro Bay National Estuary Program:Morro Bay National Estuary Program:‘‘Stormwater Monitoring Report 2007’ – First Flush SamplingStormwater Monitoring Report 2007’ – First Flush Sampling

E. coliE. coli TurbidityTurbidity Total Suspended Solids (TSS)Total Suspended Solids (TSS) Total Dissolved Solids (TDS)Total Dissolved Solids (TDS) OrthophosphatesOrthophosphates Dissolved Metals (Zinc, Copper, Nickel)Dissolved Metals (Zinc, Copper, Nickel)

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Possible Pollutant Sources – Possible Pollutant Sources – Baywood/Los OsosBaywood/Los Osos

High septic system densityHigh septic system density

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What other water quality concerns What other water quality concerns can you identify that should be can you identify that should be addressed in the Baywood – Los addressed in the Baywood – Los Osos SWMP?Osos SWMP?


3636

ReferencesReferences CCAMP (http://www.ccamp.org/)CCAMP (http://www.ccamp.org/) 2006 303(d) Listings 2006 303(d) Listings

(http://www.waterboards.ca.gov/water_issues/programs/tmdl/(http://www.waterboards.ca.gov/water_issues/programs/tmdl/docs/303dlists2006/epa/state_usepa_combined.pdf)docs/303dlists2006/epa/state_usepa_combined.pdf)

TMDLs TMDLs (http://www.swrcb.ca.gov/centralcoast/TMDL/303dandTMDLpr(http://www.swrcb.ca.gov/centralcoast/TMDL/303dandTMDLprojects.htm)ojects.htm)

Heal the Bay (http://www.healthebay.org/)Heal the Bay (http://www.healthebay.org/) Morro Bay National Estuary Program’s Implementation Morro Bay National Estuary Program’s Implementation

Effectiveness Program Effectiveness Program (http://www.mbnep.org/files/2007%20Stormwater(http://www.mbnep.org/files/2007%20Stormwater%20Monitoring%20Report%20final.pdf)%20Monitoring%20Report%20final.pdf)

County of San Luis Obispo Public WorksCounty of San Luis Obispo Public Works City of San Luis Community DevelopmentCity of San Luis Community Development

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Questions?Questions?

Tamara PresserTamara Presser

(805) 549-3334(805) 549-3334

[email protected]@waterboards.ca.gov

MS4 Enrollment Strategy Website:MS4 Enrollment Strategy Website:

http://www.waterboards.ca.gov/centralcoast/http://www.waterboards.ca.gov/centralcoast/stormwater/municipal/phase_2/stormwater/municipal/phase_2/ms4enrollment/enrollment_strategy_index.htmms4enrollment/enrollment_strategy_index.htm

Coastal San Luis Obispo County Water Quality Assessment May 15, 2008 Tamara Presser & Matt Thompson...

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