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-2- Dedicated pneumatic displacement pumps were used to purge a minimum of four well volumes prior to sampling. Temperature, pH, Specific Conductance (E.C. ) and Visual Characteristics were monitored during the purge operations at a fequency of approximately one set of measurements per well casing volume removed. These parameters were allowed to stabilize prior to sampling according to specifications in Appendix A, Section 2.103 of the contracted "Specifications for Groundwater Quality Sampling and Analysis for the Harney Lane Sanitary Landfill", previously submitted to California Water Labs. All measurements and other pertinent information was recorded in a field service log book. After the purge operation a 2-inch bladder pump was used for sample collection. Samples were first collected for organics analyses and then for remaining parameters. Care was taken to avoid entrapment of air with the samples. Each container was labeled to indicate clients name, sample location, date and time of collection. Additional labeling was performed by Sample Control at the Laboratory to assign I.D. numbers, project numbers and preservatives used. Chain of Custody documentation was prepared and accompanied the samples to the Laboratory. The clarity of the well water obtained during sampling operations indicated no suspended solids or silts were associated with the samples. Therefore they were not filtered in the field or in the Laboratory. Preservation was accomplished in the field by cooling the samples. The samples were delivered the same day to the Laboratory and appropriate preservatives were added at that time by laboratory personnel. Analysis was performed in accordance with EPA quantitative analytic procedures (see Appendix A, Section 2.03 of "Specifications. . . . ) QA/QC protocol was also followed according to EPA specifications. Details of CWL's mandatory Quality Assurance Guidelines can be obtained by request. Analyses indicates the presence of Calcium, Magnesium, Sodium, Chloride, Fluoride, Nitrate and Sulfate in all four monitoring wells. The concentrations of these constituents are below state action levels (MCL's) . Cadmium was detected in MW-4, also at a concentration well below the State MCL. No organic compounds were observed in the EPA 601/602 analyses. The analysis of all reagent blanks and travel controls indicated no contam- ination of the samples occured. If you have any questions or comments please feel free to call me. Sincerely, Scott Foster Inorganic Laboratory Director