tmdl project for pathogens in richardson bay
DESCRIPTION
TMDL Project for Pathogens in Richardson Bay. North Bay Watershed Association Meeting November 7, 2007 Farhad Ghodrati Naomi Feger. What is a TMDL Plan?. T otal M aximum D aily L oad plan is a water quality improvement plan that: I dentifies sources of impairment - PowerPoint PPT PresentationTRANSCRIPT
TMDL Project for TMDL Project for Pathogens in Richardson BayPathogens in Richardson Bay
North Bay Watershed Association Meeting North Bay Watershed Association Meeting
November 7, 2007November 7, 2007
Farhad GhodratiFarhad Ghodrati Naomi FegerNaomi Feger
What is a TMDL Plan?What is a TMDL Plan?
TTotal otal MMaximum aximum DDaily aily LLoad plan is a water oad plan is a water quality improvement plan that:quality improvement plan that:
IIdentifies sources of impairmentdentifies sources of impairment
Sets desired water quality targetsSets desired water quality targets
Prescribes corrective actionsPrescribes corrective actions
Why Develop a TMDL Why Develop a TMDL Plan?Plan?
Clean Water ActClean Water Act Requires all Regional Requires all Regional Water Boards to:Water Boards to:
Identify impaired water bodiesIdentify impaired water bodies
Develop TMDL Plans for each impaired Develop TMDL Plans for each impaired waterbody waterbody
The The ProblemProblem
Richardson Bay does not meet Richardson Bay does not meet water quality standards for: water quality standards for: - water contact recreation - water contact recreation
- shellfish harvesting- shellfish harvesting
TMDLTMDL Required Required
Summer 2006 Data Vs. Winter 2007 Data
0
50
100
150
200
250
300
350
Sampling Locations
Summer 2006 Data
Winter 2007 Data
Shellf ish Harvesting Standard
Water Contact Recreation Standard
Localized Impairment Due to Localized Impairment Due to PathogensPathogens
Pathogen Source Pathogen Source Categories Categories of Concernof Concern Sanitary sewer
line failures Stormwater runoff Houseboats (floating
homes) Vessels (recreational,
live-aboard, anchor-out boats)
(Wildlife)Photo of a substandard houseboat
sewage system
Solving the ProblemSolving the Problem——OverviewOverviewImplementation Plan:Implementation Plan: Continue and improve upon Continue and improve upon
existing actionsexisting actions
Rely on existing regulatory Rely on existing regulatory programs and waste discharge programs and waste discharge prohibitionsprohibitions
Establish monitoring and adaptive Establish monitoring and adaptive management programmanagement program
Actions to Reduce Actions to Reduce Contributions from Contributions from Stormwater RunoffStormwater RunoffComply with Comply with
stormwater stormwater management management plansplans
Update plans as Update plans as needed to include needed to include specific measures specific measures to reduce pet and to reduce pet and human wastehuman waste
Photo of storm drain inlet discharging to the Bay
Actions to Address Actions to Address Sanitary Sanitary Sewer Line FailuresSewer Line Failures
Comply with Board’s Sanitary Sewer overflow program
Comply with USEPA Enforcement Orders to Sanitary Districts
Actions to Reduce Actions to Reduce Contributions from Contributions from Houseboats and VesselsHouseboats and Vessels Comply with vessel waste discharge Comply with vessel waste discharge
prohibitionprohibition
Local authorities evaluate adequacy and Local authorities evaluate adequacy and integrity of waste handling systemsintegrity of waste handling systems
Owners make necessary improvements to Owners make necessary improvements to ensure no waste is discharged into the Bayensure no waste is discharged into the Bay
Evaluating Progress Through Evaluating Progress Through Monitoring and Adaptive Monitoring and Adaptive ImplementationImplementation
Water quality monitoring plan to track progress and prioritize implementation
Adaptive implementation: Take action now and continue to gather information
Implementation /Implementation / MonitoringMonitoring
Gather Data /Gather Data /ReviewReview
TargetsTargetsMet?Met?
Next StepsNext Steps
State Water Board approvalState Water Board approval
Office of Administrative Law Office of Administrative Law approvalapproval
USEPA approvalUSEPA approval
Recent USEPA Orders for Recent USEPA Orders for Sewage Collection AgenciesSewage Collection Agencies
Issued on April 10, 2008, to ten different agencies Issued on April 10, 2008, to ten different agencies Require Sewage Spill Reduction Action Plan (SSRAP):Require Sewage Spill Reduction Action Plan (SSRAP):
– Elimination of collection system spillsElimination of collection system spills– Spill response, recordkeeping, notification & reportingSpill response, recordkeeping, notification & reporting– Collection system maintenance and managementCollection system maintenance and management– Collection system assessmentsCollection system assessments– Capacity assuranceCapacity assurance– Infrastructure renewalInfrastructure renewal– Implementation study and reportImplementation study and report– Quarterly spill reports and annual progress reportsQuarterly spill reports and annual progress reports
Subject to review and approval by EPASubject to review and approval by EPA
Tiburon
Belvedere
Mill Valley
Sausalito
Unincorporated County
•
Southern Marin Sewer Agencies