EXH1113041832

I. Whole Efflu_n_t Toxicity Te_tln_ R e2u|atorv Guidance A. Introduction ........................................................................................ I B. WET Testing Requirements in NPDES Permits ......................................... ..... 1 C. Options for Pm-mit_es ..................................................................... •...... 4 H. Whom Effluent Toxicity Test Review A. Introduction ........................................................................................ 7 B. Invalid tests ............................. , ........................................................... 7 1. Failure of EPA Statistical Flowcharts ................................................. 7 2. Appropriate Negative ControLs ......................................................... 9 3. Appropriate Test Termination .......................................................... 9 4. Acceptable Start Counts................................................................ I0 ' 5. Acceptable pH Adjustment ............................................................. 11 6. Randomization ........................................................................... 12 7. Tests Which Fail the Power Standards................................................ 12 C. Other Testing Requirements .................................................................... 13 1. Dechlork-.ation ........................................................................... 13 2. Acute Toxicity Test Duration .......................................................... 13 3. OutdatedEPA Manuals ................................................................. 13 4. Reference Toxicant Tests ............................................................... 13 5. Outliers .................................................................................... 18 6. Excessive Time to Produce a Test Report ............................................ 19 7. Aeration of Test Chambers ............................................................. 19 8. Sporadic Mortalities ..................................................................... 19 9. NOEC Expression ....................................................................... 21 10. Brine Controls ............................................................................ 22 i. Deviations from Protocols and Acceptability Criteria .............................. 22 12. Dual Endpoint Tests ..................................................................... 22 D. Check for Completeness of Report ............................................................ 23 i. Paper Submittals ......................................................................... 23 2. Electronic Submission of Test Data ................................................... 24 HI. Toxicltv Test Report Checkli._t ........................................................................ 25 A. Sample Handling ................................................................................. 25 1. Transfer and Storage .................................................................... 25 2. Holding Time ............................................................................ 26 3. Filtration ................................................................................... 28 4. Aeration ................................................................................... 28 AR 041834 B. Water Quality Measurements ................................................................... 29 i. Purpose .................................................................................... 29 2. Parameters and Schedule ............................................................... 29 C. Toxicity Tests and Species ....................................................................... 31 i. Acute Toxicity Tests…

Open full document

Upcoming Events

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 [...]