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•w.E'. T. Inc. ~~~ ~~~ ~~~~~ <br />Water & Environmenta/ Testinr /nc 399 West /200 North. B Orem. Utah 84057 (8011235-97~/ Fax(80/)235-yoov <br />Acute Whole Effluent Toxicity Report <br />Ceriodaphnia <br />DATE: December 14, 1999 <br />PERMITTEE NAME: Western Fuels Co. SITE ID: New Horimn Mine OUTFACE NO: 007 <br />TEST (AnimaUAge): Ceriodaphnia X24 hours. SAMPLE (Date//ypeJ: 12/7/99 Greb. <br />DATE/TiME TEST BEGAN: 12/8/99 1:00 p.m. DATE/I'IME TEST COMPLETED: 12/10/99 I:00 p.m. <br />TEST CONDITIONS <br />Ceriodephnia dubia neonates were exposed to diluted Effluent as.specified by the permit. At the end of the test period Survival <br />was measured to determine if Acute Toxicity was present in the sample. <br />Auimel Age at Test Start <br />Number of Organisms/Dilution Volume/Replicates <br />Rood:.::..: . <br />Aeration <br />Dissolved:Oxygeu <br />Water Replacement <br />Temperature <br />Photo Period <br />PH <br />Dilutiou Water <br />Receiving Water <br />5 organisms/15 mU4 replicates. <br />Fed Y'fC.and Algae befoe starting test. <br />None required. <br />Measured daily uld/new. <br />Renewed daily. <br />20 ± I degrees C. <br />16 hours light 8 hours dark. <br />Measured initially end at 24 hours. <br />Reconstituted water (±IS% hardness of the receiving <br />water). <br />None was supplied. <br />SUMMARY <br />Results: ' X:: Pass Fail <br />There was NO significant efFect on survival. <br />Enclosed are data sheets and statistical reports. <br />Sin ly, <br />~~ <br />Rawlings <br />Water & Environmental Testing, Inc. <br />Enclosure <br />