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Inc <br />LABORATORY DIVISION <br />• <br />QUALITY CONTROL <br />Quality Assurance Program <br />ACZ INC. maintains an extensive Ouaiity Assurance Program in accordance with the "EPA <br />Handbook for Analytical Ousllty Control in Mater end wastewater Laboratories". This program <br />ensures that ali data generated by the various analytical methods are both precise and <br />accurate. All analyticsl methods used are docunented and comply with EPA, APHA, USCS, ASTM, <br />antl other established procedures. <br />ACZ INC. maintains an EPA Certification for analyzing drinking water for inorgante and <br />organic parameters and routinely pertieipstes in the EPA Performsnee Evaluation Program, USCS <br />Analytical Evaluation Program, and the western Soils and Overburden Task Group Round Robin <br />Testing Program. <br />Quality assurance is maintained by esreful control of Reagents, Standards, end Instrument <br />Calibration. For each analytical run, multi-level calibration standards, blanks, duplicates, <br />spikes, and standard reference samples are analyzed on a regular schedule which mats or <br />exceeds EPA Requirements. Cation-Anion Belence (CAB) eeleutations are performed on all <br />samples analyzed for major cations end anions, samples with CAB differences greater than SR <br />• are reanalyzed for suspect parameters. <br />ACZ INC. follows proper ssmple preservation and storage procedures, es outlined by EPA, to <br />ensure minimum ssmple degratlation. In addition, proper efiein-ot-custody procedures and <br />strict confidentiality ere an integral part of the laboratory operations. <br />Data flow is documented from receipt of sample through final reporting. A71 data is reviewed <br />and approved by qualified personnel. <br />Computerized duality Control <br />ACZ INC. is computerizing our quality control data records to improve the efficiency of our <br />Quality Assurance Program. The computerized Ouelity Control progrsm will provide laboratory <br />personnel a valuable tool for trseking the large amounts of Quality Lontrol data generated. <br />whether through personnel tralnSng, investment in new technology, or upgrading our program <br />through contact with experts in the field, ACZ INC. constantly strives to maintain the best <br />Quality Assurance and Ouslity Control Programs available. <br />Figure 2h <br />• Laboratory Quality Assurance Program <br />Revised t4arch, 1987 <br />2.04-30w <br />