PCBs TMDL Load Reduction Accounting for Source Control Measures

Date / Time:
Wednesday, Sep 16 4:00pm to 4:30pm
Track / Session:
Track: Monitoring and TMDL Implementation / Session 9

The urban stormwater wasteload allocation in the San Francisco Bay PCBs Total Maximum Daily Load (TMDL) is 2 kilograms per year (kg/yr), which represents a 90% reduction from the TMDL’s assumed 2003 baseline PCBs load by 2030. Provisions C.11 and C.12 of the San Francisco Bay Municipal Regional Stormwater Permit (MRP) require that the Permittees prepare a PCBs and mercury control measure implementation plan and corresponding reasonable assurance analysis (RAA) that demonstrates quantitatively that the plan will result in mercury load reductions sufficient to attain the mercury TMDL wasteload allocations by 2028 and PCBs load reductions sufficient to attain the PCBs TMDL wasteload allocations by 2030.

Source control programs that have been implemented or are under development include source property identification and abatement, managing PCBs in building materials during demolition, PCBs in electrical utilities, managing PCBs in infrastructure, and various enhanced operation and maintenance practices. Load reductions are also accounted for implementation of green stormwater infrastructure and full trash capture devices. This presentation will provide background on the source control measures and discuss the methodologies used to estimate PCBs load reductions for the RAA.

Primary Speaker:
Lisa Austin, Geosyntec Consultants, Inc.
Lisa Austin, P.E., is a Principal with Geosyntec Consultants in Oakland, CA. She has 30 years of experience in water quality and stormwater management and has worked closely with both public and private clients on stormwater and industrial NPDES permit compliance related tasks for much of her career. Lisa has a B.S. and M.S. in Environmental Engineering from Southern Illinois University at Carbondale.
Supporting Speaker 1:
Lisa Sabin, EOA, Inc.
Lisa Sabin is a Senior Scientist at EOA, Inc. in Oakland, CA. Lisa has more than 15 years of experience developing, implementing and managing monitoring and assessment projects investigating water quality. She currently assists San Francisco Bay Area municipal agencies with pollutant control programs, stormwater management and permit compliance. Lisa has a B.A. in Chemistry from San Jose State, and an M.S. in Environmental Health Sciences and a Doctorate in Environmental Science and Engineering, both from the University of California at Los Angeles.