EXH0137018038

below the establishedcriteria. The importanceof these effects to the criter diatom populationsand the aquaticsystem is sufficiently in question to _ the state to adoW-the USEPANafonal Criteria value (36 (knov Itg/L) as the stale threshold crite.rig however, wherever _cal the (Iambient concentrations should not be allowed to exceed a chronic marine concentration of 21 pg/L be sc] less tt dd. These ambient criteria in the table are for the dissolved fraction. The cyanidecriteriaarebased on the weakacid dissociablemethod. The [Statut me_s criteriamay not be usedto calculatetotalrecoverableeffluent (Order limits unless the seasonal partitioning of the dissolved to total metals in the ambientwater are known. When thi_informationis absent, tory A, these metals crite_a shall be applied as total re,covetable values, 201A-( determinedby back-calculation,using the conveasionfactorsincor- poratedin thecriterionequations. Metalscriteriamaybe adjustedon a site-specific basis whendata are madeavailableto the depammm above : clearly demonstrating the effective use of the water effects ratio approach established by USEPA, as genendly guided by the proce- dures in USEPA Water Quality Standards Handbook, _mber ]; 1983, as supplemented or replaced. Information which is used to develop effluent limits based on applying metals partitioning studies ete_o or the watereffects ratio approachshall be ide_fied in the permit shall fact sheet devdoped _ to WAC 173-220-1160 or 173-226-110, tion a as appropriate, and shall be made available for the public comment period required Imrmant to WAC 173-220-050 or 173-226-130(3), as (; __"" (Colu ee. Thecriteria for cyanide is based on the weakanddissoaable med_ iation in the 17th Ed. Standard Methods for the Examination of…

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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 [...]