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Analytical Procedures <br />The analysis of groundwater samples is conducted in accordance with accepted <br />quantitative analytical procedures. The following four publications are considered the <br />primary references for groundwater sample analysis, and the contracts with the <br />laboratories analyzing the samples stipulate that the methods set out in these <br />publications be used. Please note that procedures used are periodically updated by <br />federal and state agencies, and the certified laboratories amend analysis as required <br />by the update. <br />• Standard Methods for the Examination of Water and Wastewater. 16th Ed., <br />American Public Health Association, et al., 1985. <br />• Methods for Chemical Analysis of Water and Wastes, U.S. EPA, 600/4-79- <br />020, March 1979. <br />• Test Methods for Evaluation of Solid Waste- PhvsicalfChemic l Methods. <br />U.S. EPA SW -846,1982. <br />• Methods for Oraanic Chemical Analysis of Municipal and Industrial <br />Wastewater, EPA, 600/4-82-057, 1982. <br />. Practical f,uide for Groundwater Sampling. EPA, 600/2-85/104, September <br />1985. <br />• RCRA Ground Water Monitoring Technical Enforcement Guidance <br />Document, EPA, September 1986. <br />Analytical Methods <br />The analytical methods used by the selected laboratories are those recurred by the <br />type of analysis (fuels, metals, etc.). These methods are those currently a.Oprcved by <br />the State Regional Water Quality Control Board. <br />ENSCO ENVIRONMENTAL SERVICES, INC. <br />Laboratory Procedures <br />Latest Revision: May 15, 1989 <br />