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ERC - EnvironmentaI 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: Quahty Assurance Labs Address. 6605 Nancy Ridge Rd., San Diego 92121 <br /> ' <br /> Sample ID 16985-91 Results: LC50> 750 m <br /> ' Sample and Bioassay Information <br /> Test Type Screening Test Conditions- Static <br /> Test Species Pimephales 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) 34.6 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 Mortalit <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 /> t 500 mg/l 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) X750 m <br /> Calculation Method: none necessary <br /> ' Analyst (s) - Date: <br /> Results Verified by- Date- /z <br />