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^ <br /> ` <br /> * <br /> Dedicated pneumatic displacement pumps were used to purge a <br /> minimum of four well volumes prior to sampling. Temperature, pH, <br /> specific conductance (E.C. ) and visual characteristics were <br /> monitored during the purge operations at a frequency of <br /> approximately one set of measurements per well casing volume <br /> removed. These parameters were allowed to stabilize prior to <br /> sampling according to specifications in Appendix A° Section 2. 103 <br /> of the contracted "Specifications for Groundwater Quality <br /> Sampling and Analysis for the Harney Lane Sanitary Landfill ", <br /> previously submitted to California Water Labs. All mea,�,ureme:t� <br /> and other pertinent information was recorded in a field service <br /> log book. <br /> After the purge operation a 2-inch bladder pump and/or a Teflon <br /> Bailer was used for sample collection. Samples were first <br /> collected for organics analyses and then for remaining <br /> parameters. Care was taken to avoid entrapment of air with the <br /> samples. Each container was %abs*1e6 to indicate clients name, <br /> sample location, date and time of collection. Additional <br /> labeling was performed by Sample Control at the laboratory to <br /> assign I . D. numbers, project numbers and preservatives used. <br /> Chain-of-Custody documentation was prepared and accompanied the <br /> samples to the laboratory. <br /> The clarity of the well water obtained during sampling operations <br /> indicated no suspended solids or silts were associated with the <br /> samples. Therefore they were not filtered in the field or in the <br /> laboratory. Preservation was accomplished in the field by <br /> cooling the samples. The samples were delivered the same day to <br /> the laboratory and appropriate preservatives were added at that <br /> time by laboratory personnel . <br /> Analysis was performed in accordance with ERA quantitative <br /> analytic procedures (see Appendix A, Section 2.03 of <br /> "Soecifications. . . ) QA/QC protocol was also followed according <br /> to EPA specifications. Details of CWL' s mandatory Quality <br /> Assurance Guidelines can be obtained by request . <br /> If you have any questions or comments, please feel free to call <br /> me. <br /> Sincerely, <br /> Scott Foster <br /> Inorganic Laboratory Director <br /> SF/do <br /> ' <br /> ' <br />