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Pacific EcoRisk Environmental Consulting &Testing <br /> 4.SUMMARY AND CONCLUSIONS <br /> The results of this toxicity test indicate that this waste sample was pyo toxic to fathead minnows <br /> at the test treatment levels.The LC50 of this sample was>500 mg/L,indicating that this sample <br /> should nol be considered a hazardous waste with respect to fish 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—The biological responses for the test organisms at the Lab Control treatment <br /> were within acceptable limits. <br /> Concentration Response Relationships—There was a valid concentration-response <br /> relationship for this Title 22 'Hazardous Waste' Toxicity test(EPA-821-B-00-004),which was <br /> determined to be acceptable for this testing. <br /> Page 3 A Pacific EcoRisk DU> <br /> 7114 <br />