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QUALITY ASSURANCE PROGRAM <br /> CAS' comprehensive quality assurance program ensures that the quality of the data <br /> produced by CAS laboratories will be known and documented and that the data will <br /> be scientifically sound and legally defensible. Whether work is carried out in the <br /> laboratory or in the field, CAS requires compliance with its written quality assurance t <br /> and quality control (QA/QC) protocols. Each activity in the analytical process, <br /> including sampling, analysis, data review, report production, and report delivery <br /> follow written procedures and is critical to quality data production. CAS' Corporate <br /> Quality Assurance Director and each laboratory's Quality Assurance Program <br /> Manager, have responsibility for CAS' QA program. Their responsibilities include <br /> ensuring that sampling and analytical procedures are properly executed, sample <br /> custodial protocols are complete, QC procedures are implemented and recorded, <br /> and that only data of known and documented quality are reported. Each laboratory's <br /> QA program is described in their Quality Assurance Manual, QA Manuals are <br /> available for review upon request. <br /> CERTIFICATIONS , <br /> CAS maintains a variety of certifications, accreditations, and approvals with federal , <br /> and state agencies and with other regulatory programs. With eight laboratories i <br /> located throughout the United States, CAS is certified or accredited to perform <br /> environmental testing services in most states for air, drinking water, wastewater, <br /> groundwater, solid, hazardous waste and underground storage tank programs. <br /> Certificates are available upon request. <br /> National Environmental Laboratory Accreditation Conference (NELAC) <br /> The National Environmental Laboratory Accreditation Conference (NELAC) is a <br /> voluntary association of state and federal agencies (including EPA, DOD and <br /> DOE) whose purpose is to establish and promote mutually acceptable <br /> performance standards for the operation of environmental laboratories. NELAC <br /> provides a standard for operational performance applicable to all laboratories <br /> performing compliance testing for the SDWA, CWA, RCRA and CERCLA. j <br /> t <br /> The goal of NELAC is to foster the generation of environmental laboratory data of <br /> known and acceptable quality through the development of nationally accepted <br /> standards for environmental laboratory accreditation. The standards accomplish <br /> Page 10 of 29 <br /> i <br />