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r QUALITY ASSURANCE PROGRAM r CAS' comprehensive quality assurance program ensures that the quality of the data produced by CAS laboratories will be known and documented and that the data will be scientifically sound and legally defensible. Whether work is carried out in the laboratory or in the field, CAS requires compliance with its written quality assurance I and quality control (QA/QC) protocols. Each activity in the analytical process, ? including sampling, analysis, data review, report production, and report delivery follow written procedures and is critical to quality data production. CAS' Corporate Quality Assurance Director and each laboratory's Quality Assurance Program i Manager, have responsibility for CAS' QA program. Their responsibilities include ensuring that sampling and analytical procedures are properly executed, sample i custodial protocols are complete, QC procedures are implemented and recorded, and that only data of known and documented quality are reported. Each laboratory's QA program is described in their Quality Assurance Manual. QA Manuals are ! available for review upon request. rCERTIFICATIONS CAS maintains a variety of certifications, accreditations, and approvals with federal E and state agencies and with other regulatory programs. With eight laboratories located throughout the United States, CAS is certified or accredited to perform environmental testing services in most states for air, drinking water, wastewater, groundwater, solid, hazardous waste and underground storage tank programs. I Certificates are available upon request. 1 National Environmental Laboratory Accreditation Conference (NELAC) The National Environmental Laboratory Accreditation Conference (NELAC) is a voluntary association of state and federal agencies (including EPA, DOD and DOE) whose purpose is to establish and promote mutually acceptable performance standards for the operation of environmental laboratories. NELAC provides a standard for operational performance applicable to all laboratories performing compliance testing for the SDWA, CWA, RCRA and CERCLA. i i The goal of NELAC is to foster the generation of environmental laboratory data of j rknown and acceptable quality through the development of nationally accepted standards for environmental laboratory accreditation. The standards accomplish r Page 10 of 29 r I I 1