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Pertinent field information recorded during the monitoring program at Wells MW-1 through MW-4 are given in Table C-1. Private Well Sampling Five existing private wells (the landfill water supply, Sawyer, Hall , v Whittaker, and Goehring wells) were sampled on May 11, 1987, for water quality analysis. The procedures used to sample the private wells are very similar to those used to sample the "MW" series monitoring wells. Prior to sampling the private wells, depth to water measurements were recorded at the Sawyer, Goehring, and landfill water supply wells. The Whittaker and Hall wells could not be accessed at the well source; therefore, no depth to water measurements were taken at these wells. Samples from each of therivate wells were collected P as close to the well head as possible. Since all of the private wells were in opera- tion, extended purging prior to sampling was not required. However, the water in the plumbing and water storage tank was evacuated prior to obtaining samples. Samples were collected directly from the well source into the appropriately preserved bottles for the analyses to be performed. Private well samples were not filtered. Table C-2 pre- sents depth to water information and descriptions of sampling loca- tions for each private well sampled. All procedures described in this s document for the EMCON-installed monitoring wells in the equipment cleaning, sample preservation, sample shipment, analytical procedures, and chain-of-custody control sections were also observed for private well sampling. Sample Preservation Sample preservation varied with each type of analytical parameter. Selected container types and materials were nonreactive with the sample and the particular analytical parameter tested. Sample vol - umes, sample containers, and preservatives used during the monitoring PJ9 9390102.00D C-5