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ERC - Environmental and Energy Services Company <br /> Bioassay Laboratory <br /> 10477 C Roselle Street <br /> San Diego, CA 92121 <br /> ' (619) 458-9044 ext 208 <br /> ' Client Name Quality Assurance Labs Address: 6605 Nancy Ridge Rd., San Diego 92121 <br /> Sample ID 16987-91 Results LC50> 750 m /o _ <br /> ' Sample and Bioassay Information <br /> ' Test Type. Screening Test Conditions- Static <br /> ep <br /> Test Species. Ptmhgles promelas Common Name Fathead minnow <br /> Organism Supplier Sticklebacks Unlimited Number per Tank. 10 <br /> ' Acclimation Period: 20 days Acclimation Temp (°C) 20±2 <br /> Mean Length (mm) 346 Mean Weight(g) 041 <br /> Range (mm) 30 - 42 <br /> Water Source- Charcoal Filtered Tapwater Test Solution Volume (liters) 8 <br /> Sample Receipt Date: 11/8/91 Test Dates 11/18/91 to 11/22/91 <br /> Results Summary <br /> ' Initial Final Percent Average <br /> Treatment Rep. Count Count Mortality Mortality <br /> ' Control A 10 10 0 <br /> B 10 10 0 0 <br /> ' 250 mg/1 A 10 10 0 <br /> B 10 10 0 0 <br /> 500 mg/1 A 10 10 0 <br /> B 10 10 0 0 <br /> ' 750 mg/1 A 10 10 0 <br /> B 10 10 0 0 <br /> ' LC50 (95% confidence intervals) >750 m <br /> Calculation Method none necessary <br /> ' Analyst (s) Date: j\ r <br /> Results Venfied by. 6 9ywdklDate: /z, <br />