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'* AEGIS ENVIRONMENTAL, INC. <br />STANDARD OPERATING PROCEDURES <br />RE: LABORATORY ANALYTICAL QUALITY ASSURANCE AND CONTROL <br />SOP -5 <br />In addition to routine instrument calibration, replicates, spikes, blanks, spiked blanks, and <br />certified reference materials are routinely analyzed at method -specific frequencies to <br />monitor precision and bias Additional components of the laboratory Quality <br />Assurance/Quality Control program include <br />1 Participation in state and federal laboratory accreditation/certification programs; <br />2. Participation in both U S EPA Performance Evaluation studies (WS and WP <br />studies) and inter -laboratory performance evaluation programs; <br />3. Standard operating procedures describing routine and periodic instrument <br />maintenance, <br />4 "Out-of-Control'/Corrective Action documentation procedures, and, <br />5. Multi-level review of raw data and client reports. <br />10 <br />ATfACNMENT/SOP-WSEPTEMBER 1992 <br />