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Mr,%,ak1w Rait."Jumil <br /> lldgt 3 <br /> 2, Anaiy%is ofNexfrarric production waste streams did riot indicatc ha&ardous waste cluorne <br /> concentrations. <br /> The laboratory analysis,.vas not duplicated and it is possibletha't i th-er a laboratory analylical <br /> e <br /> error ccurred or the collected sampled was exposed to chrome contamination. Since the <br /> holding time for samples being tested For metals is six months, if the sample wasmialincd, <br /> the laboratory could reanalyze the sample as a means of ruling out laboratory error, <br /> An wialysis of the foregoing data indicates, in my best professional judgment, that the reported <br /> hazardous waste level of the chrorric concentration in sample Next 2 could have resulted frorn either <br /> material deposited frorn an outsidcsourcc, lab error,or inadvertent sarnpic contamination. As the <br /> ch me concentrations found in s° le NexO2 is an order of map.iEudeit. etiter than the raw material <br /> used in the fiwility,developing a tlieory to urease the chrome concentrations found in,the sample <br /> would be technology challenging. <br /> Sincerely, <br /> /* <br /> Marvin K Sachse, P,.E., CPESC. C CESSWI <br /> UA <br /> BRASH Industries a 4635 Admiralty Way a Mwina Del Rey, CA 90292 <br /> Telephone, 310-30&8637 a Fax: 310474-M75 a mT8y&g§_hindcom <br />