Maia Singer, Stillwater Sciences - KlamathRestoration.gov

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Outline Sampling Overview General Results (and interactive analysis, if desired) Comparisons with Screening Levels Bioassays Risk Evaluation Fish Tissue Sampling KLAMATH SECRETARIAL DETERMINATION WATER QUALITY WORKSHOP PRELIMINARY DATA SUBJECT TO REVISION
Overview of Sediment Contaminant Data Data, Press Release, Q&A, Maps, and QAPP are available at http://<strong>KlamathRestoration</strong>.<strong>gov</strong> Preliminary Findings: Generally consistent with 2006 study results Many commonly occurring chemicals detected, mostly at low levels No indication of human health concern from direct contact with sediments, but a risk evaluation process is indicated Some chemicals exceeded Tier 1 or Tier 2 screening levels Some bioaccumulative chemicals detected [PCBs, Legacy OC Insecticides, Dioxins/Furans, Flame retardants (PBDEs)] Some not-detected compounds had Reporting Limits higher than the relevant screening levels KLAMATH SECRETARIAL DETERMINATION WATER QUALITY WORKSHOP PRELIMINARY DATA SUBJECT TO REVISION
Page 1: -by Chauncey Anderson, USGS; Susan
Page 5 and 6: KLAMATH SECRETARIAL DETERMINATION W
Page 7 and 8: KLAMATH SECRETARIAL DETERMINATION W
Page 9 and 10: Sediment Chemistry Evaluation Proce
Page 11 and 12: Preliminary Sediment Quality Screen
Page 13 and 14: Copco 1 Data Summary COPCO Location
Page 15 and 16: Estuary Data Summary ESTUARY Locati
Page 17 and 18: Screening Level Comparisons - PAH
Page 19 and 20: Bioassessment Tests Provide inform
Page 21 and 22: Elutriate Bioassay Test Acute Toxi
Page 23 and 24: Why sample fish? Why now? From the
Page 25 and 26: Fish Tissue Data Collection Provid
Page 27 and 28: Data decisions to support objective
Page 29: Questions? KLAMATH SECRETARIAL DETE

Maia Singer, Stillwater Sciences - KlamathRestoration.gov

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