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' Introduction . ONSUE Environmental Laboratories, Inc Revision 0 Quality Assurance Plan February 13, 1996 Page 2 of 7 ' > To demonstrate quality through the analysis of performance evaluation samples, both Internal and external ' Overview of Quality Plan Q4try Assurance Program Specific ONSITE QA policies Include management and QA systems which emphasize the nrevennon of problems rather than detection and subsequent corrections The Quality Assurance ' program is used to detect and correct problems in the measurement process, to demonstrate attainment of a state of statistical control, and to demonstrate that the data generation system produces data that is scientifically valid, traceable and retrievable The methodology is chosen to accurately reflect the parameters being tested Quality Assurance programs for analytical measurements should reduce measurement errors to agreed upon Iutiits and to assure that the results are of acceptable quality to the client ' Wlthm ttus manual, the following definitions will be used > Quakry Assurance The overall program Imposed upon laboratory operanon This includes all actions taken by personnel and the documentanon of laboratory performance as specified by the Quality Assurance Program > Quality Control_ The dally specific measurements taken widun the laboratory to verify sample integrity, performance of analysts, data processing, and record maintenance Quality control is the mechanism established to control errors > Qualiry Assessment Process for evaluating the quality of laboratory measurements by use of data from internal and external quality control measures When properly conceived and executed, a Quality Assurance Program will result In a measurement system operating in a state of statistical control, which means errors have been reduced to acceptable levels and have been characterized statistically The ONSITE Quality Assurance Program includes ' > The development of and strict adherence to pnnciples of good laboratory practice such. as "Z-Ing" out unused portions of pages, legible handwriting, the use of Indelible, black Ink, and single line, iruualed corrections > The consistent use of Standard Operanon Procedures The laboratory uses approved methodologies (e g EPA, NIOSH, ASTM) for compliance related work Screening ' methods, specifically developed for clients are put through rigorous evaluanon prior to their implementation SOPS specific to ONSITE mobile laboratories and uistrumentaaon and equipment are written for each method and are updated annually and as needed word 6 0 loelmav doc I i I