EXH0670024924

:_:i"1 S_]mm_ryTest Water of Ceriodaphnia dubia waterHardness(ttW,/L)effect ratioCa LCS0results:0_JL) LCS0N°rmalizedl_Gv't ,_(V_,tL)f _nLj_0L WER _"/.__CJ" Om Cu-Spflc_dIVBIIt_Cr_ 44 70.711 7,9.762 16.016 h.OF_II_,. ,_1 Sit, War_ _ n_ 5. 'i',:t . Cal-Spik_ Walker Crte,k 50 33.2.59 33.2.39 6.678 ':'t Site Wamr 'ii Cu-Spikt:d D,._ Moin_ _k 60 88.087 74.184 14.896, Site Wate:" 7! ,, Cu-Spiked Laboratory Watt:r 96 . 9208 4.980 n/a i_ Rcfm'enceToxicantCLCSO)= _ 102 ppbCuSO4 °_ ,'_ WER = _ wat_ effect ratio :_' nia = not ap-plicabl_ _ I.,CS0adj_tad toa hardnessL,of 50 mg./L i! % _J _ d 0 _ _.:i • ood, C •Ii °! • r ;; • :.2.2. . :- : . : f | • ! + ,! R_ults ._ Results of the range-finding water-effect ratio tests are presented in Table 2. Controlresponses and reference toxicantresults were within acceptable ranges for all ten tests. All raw data sheets and statistical analyses are located in the project files at Parametrix. Table 2. Summary of Ceriodaphnia dubia range-finding water-effect ratio for POS: Hardness Cu LCf0 (poJL) Normalized 1 Test Water (rag/L) LCf0 (ug/L) _rER -Cu-SpikedMill:rCreek 44 70.71] 79.762 16.016 Site Water Cu-Spiked Walker _k 50 33.259 33.259 6.678 Site Water 'I ,J Cu-SpikedDesMoinesCre_ 60 88.087 74.184 14.896 Site Water Cu-Spiked Laboratory.Wa*,er 96 9108 4.980 n]z R.efcr_nce Toxicant (LCfO) = Acceptable WER= Calculatedwar=effemratio n/a = not _plicable t LCf0 ad.i_stedto ahar_ of 50 mg/L ' In summary,_ven the results of the preliminary screening-level bioassays (Parametri::, 1999), and the WERs estimated based on nominal concen_ratiom (6.7 - 16.0), we…

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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 [...]