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CALIFORNIA WATER L QUALITY ASSURANCEIGUCONTROL MANAGEMENT SUMMARY SUMMAiZY It is the policy of California Water Labs.Inc. (CV;U to produce valid,verifiable data. the following document deals with the quality assurance (QA) program implemented by CWL to ensure that high-quality laboratory operations are maintained. The most important function of this QA program is to warrant that the analytical data generated by the laboratory is of known accuracy and precision; that, if necessary, it is legally defensible, and that samples provide accurate characterization of the source from which they were derived. This is a condensed version of the laboratory's internal QA manual. Ifyou require more specific information, contact the Quality Assurance Manager. CAPABILITY AND SERVICE California Water Labs is a full-service analytical laboratory, certified to assist clients with monitoring and correcting an unusually wide range of problems with water, soil, and air contamination. The company Is an Environmental Protection Agency (EPA) qualified contractor. able to conduct analytical investigations of particularly large and complex samples with urgent turnaround requirements. Its capabilities include EPA methods for Gasoline, Diesel. BTX. PCB, Pesticides, and Herbicides for both soil and water. In > addition to the EPA qualification for organic analysis,the company has received quah- $cation under the U.S. Army and the Army Corps of Engineers programs. and is certified by the State of California In the protocols for hazardous waste testing and potable water testingwWchincludes AB1803. CWL also performs work in other states with reciprocal certification plans for laboratories participating in EPA performance evaluation programs. The strict performance criteria that CWL meets in contracts with federal.state, and local agencies are applied equally in services to the private sector. The company regularly provides analyses for more than 4,000 clients in the western United States and elsewhere. With its extensive and sophisticated field service capabilities, CWL often has con- ducted on-site sampling and reporting at far-distant and remote locations more quickly and Lnex-pensively than a close-by lab would have been able to do. Through our network of over 40 Thortec International and URS Consultants,Inc.offices,we can provide prompt and efficient field services support virtually anywhere in the country. > For those clients across the nation who do not require field service, the company provides standard sampling and shipping materials for fast access to its lab analysis capabilities. The Laboratory Our fully automated organics and inorganic labs are located in a 17,000-square- foot facility in Modesto, California. CWL has the ability to measure for chemical, metals, biological, physical and mixed parameters of great comple:dty and at the lowest detection levels. The company has over 40 chemists and technicians on staff.