EXH1079040438

For additional copies of this document, contact: Deparunent of Ecology Publications Distribution Center PO Box 47600 Olympia,WA 98504-7600 TEIEphonE:(360)407-7472 The Department of Ecology is an equal opportunity agency and does not discriminate on the basis of race, creed, color, disability, age, religion, national origin, sex, marital status, disabled veteran's status, Viemam Era veteran's status or sexual orientation. For more information or if you have special accommodation needs, please contact the Water Quality Program at (360) 407-6400. AR 040440 TableofContents va_e I. Whole Ef_ent Toxicity. Testing, Regulatory. Guidance A. Inu'oduction ........................................................................................ I B. WET Testing Requirements in NPDES Permits ............................................ .. i C. Opuons for Permittees ........................................................................... .4 II. Whole Effluent Toxicity Test Review A. Introduction ........................................................................................ 7 B. Invalid rests .................... ..................................................................... 7 1. Failure of EPA Statistical Flowcharts ................................................. 7 2. Appropriate Negative Controls ......................................................... 8 3. Appropriate Test Termination ........................................................... 9 4. Accept-able Start Counts ................................................................. 9 " 5. Acceptable pH Adjustment ............................................................. 10 6. Randomization ........................................................................... 11 7. Tests Which Fail the Power Standards ............................................... 11 C. Other Testing Requirements .................................................................... 12 1. De.chlorination ........................................................................... 12 2. Acute Toxicity Test Duration .......................................................... 12 3. Outdated EPA Manuals ................................................................. 12 4. Reference Toxicant Tests... ............................................................ 13 5. Outliers .................................................................................... I5 6. Excessive Time to Produce a Test Report ........................................... 15 7. Aeration of Test Chambers ......................................... . ................... 16 8. Sporadic Mortalities ..................................................................... 16 9. NOEC Expression ....................................................................... 17 I0. Brine Controls ............................................................................ 18 I Deviations from Protocols and Acceptability Criteria .............................. 18 i!• i D. Check for…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]