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Pacific EcoRisk Environmental Consulting &Testing <br /> 4.SUMMARY AND CONCLUSIONS <br /> The results of this toxicity test indicate that the waste sample"3133 AD Art Rd. #two 2" was <br /> acutely toxic to fathead minnows at the test treatment levels.The LC50 of this sample was <500 <br /> mg/L,and therefore,the sample should be considered a hazardous waste with respect to fish <br /> toxicity. <br /> 4.1 QA/QC Summary <br /> Test Conditions-Test conditions (pH, D.O.,temperature,etc.) were all within acceptable limits <br /> for this test. All analyses were performed according to laboratory Standard Operating <br /> Procedures. <br /> Negative Control -There was a valid concentration-response relationship for this Title 22 <br /> `Hazardous Waste' Toxicity test(EPA-821-B-00-004), which was determined to be acceptable <br /> for this testing. <br /> Page 3 Pacific EcoRisk L��� <br />