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B STREET / BROADWAY PIERS DOWNTOWN ANCHORAGE SWITZER CREEK 21 - - PowerPoint PPT Presentation
B STREET / BROADWAY PIERS DOWNTOWN ANCHORAGE SWITZER CREEK 21 - - PowerPoint PPT Presentation
CA Regional Water Quality Control Board San Diego Region B STREET / BROADWAY PIERS DOWNTOWN ANCHORAGE SWITZER CREEK 21 APRIL 2003 WORKSHOP Craig L. Carlisle I NTRODUCTI ONS CONTAMI NATED SEDI MENTS - OVERVI EW TMDLs: A
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I NTRODUCTI ONS
◆ David Barker, Branch Chief ◆ Brennan Ott, Project Manager ◆ Alan Monji, Environmental Specialist ◆ Tom Alo, WRC Engineer ◆ Lisa Honma, Environmental Specialist ◆ Craig Carlisle, Engineering Geologist
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I NTRODUCTI ONS
◆ Port of San Diego ◆ City of San Diego ◆ UC Davis
Marine Pollution Studies Lab
◆ CSU San Jose Moss Landing ◆ SCCWRP, NOAA, and US Navy
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CONTAMI NATED SEDI MENTS - OVERVI EW
◆ Def inition ◆ Why a concern ? ◆ Historical perspective ◆ Current and f uture projects
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DEFI NI TI ON “Sediments containing chemical concentrations that pose a known or suspected threat to human health or the
- environment. ”
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WHY A CONCERN ?
◆ Benthic organisms ◆ Bioaccumulation ◆ Human f ood sources ◆ Re- suspension
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HI STORI CAL PERSPECTI VE
◆ 1985 copper ore clean- up ◆ Capping Convair Lagoon PCBs ◆ Commercial Basin boatyards
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CURRENT AND FUTURE PROJECTS
◆ Campbell Shipyard ◆ Chollas Creek and 7th Street
Channel
◆ Navy: Boat Channel & North
I sland
◆ NASSCO and Southwest Marine
Shipyards
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TMDL: A NUMBER OR A PROCESS?
◆ A TMDL is a number ◆ The term TMDL also is
used to ref er to a process or a project
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303d Listing - TMDL Required Regional Sampling - I mpairment Determined Site Assessment (Problem I dentif ication) Analysis (TMDL Development) I mplementation (Source Control) Sediment Clean- up
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