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r - '- usecr1 2 <br /> t' <br /> F <br /> 66 � <br /> i� <br /> sample must be filtered. All the materials' precautions used in the construction of the <br /> sampling train should be observed for filtration apparatus. Vacuum filtration of <br /> groundwater samples is not recommended. <br /> Water samples for dissolved inorganic chemical constituents (e.g., metals, alkalinity and <br /> anionic species) will be filtered in the field. <br /> Sample containers vary with each type of analytical parameter. Selected container tyjKs <br /> and materials are non-reactive with the sample and the particular analytical parameter <br /> f being tested. Appropriate containers for volatile organics are glass bottles of at least 40 <br /> milliliters in size fitted with teflon-faced silicon septa. Sample containers are properly <br /> cleaned and sterilized by the certified laboratory according to the EPA protocol for the <br /> individual analysis. <br /> `9 CaMplp PTP_cPryatiOn n' [l Slllr�m�n3 <br /> ti I <br /> r Variousreservatives are used by the certified laboratory to retard changes in samples. <br /> Sample shipment from Exceltech to laboratories performing the selected analyses <br /> routinely occurs within 24 hours of sample collection. <br /> Analytical Em••edut•es <br /> The analysis of groundwater samples i5 conducted in accordance with accepted <br /> g4antitative analytical procedures. The following four publications are considered the <br /> t primaryreferences for groundwater sample analysis, and the contracts with tate <br /> laboratories analyzing the samples stipulate that the methods set out in these publications <br /> be used. Please note that procedures used are periodically updated. by federal and state <br /> agencies, and the certified laboratories amend analysis as required by the update. <br /> 'JStiwdaW ; WateL and Nstowater. 16th Ed., <br /> ! American Public Health Association, et at., 1985. <br /> 3 <br /> M�odS or emit Analysis of Water <br /> Wastes, U.S. EPA, 60014-79- <br /> 020, March 1979. <br /> fi rh <br /> <' U.S. EPA SW-846, 1982. <br /> o <br /> p ExcELTECH, 1rrc'. <br /> Laboratory Procedures <br /> 4 Latest Revision: March 28, 1990 <br /> Minas <br />