ARCHIVED REPORTS_1988 - Laserfiche WebLink

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KLEINFELDER conditions at the landfill (exposure to municipal leachate), soluble lead concentrations could be in the range of 0.046-0.099 mg/1. At these soluble levels, the fill would not be classified as "designated waste." Lead is not in the vadose zone because it is not migrating from the fill. No other metals were detected at concentrations exceeding the TTLC, which defines hazardous waste under Title 22 of the California Administrative Code. The inorganic analysis results are summarized in Table 2, The original laboratory report is included in Appendix B. 4.2 GROUND WATER 4.2.1 LOCATION OF GROUND WATER The g depth to round water was measured with an electric water level indicator. On P September 28, 1988, the uppermost zone of ground water was 22.11 feet below the top of casing in MW-1. This corresponds to a depth of approximately 19.5 feet below ground surface, or an elevation of about 30 feet above mean sea level, based on regional topography of the site. The elevation of the well was not surveyed due to the limited usefulness of elevation information for one location. The estimated ground water elevation is consistent with Spring, 1987 regional water elevation data published by The San Joaquin County Flood Control and Water Conservation District, which indicates that ground water in the vicinity of the site is 25 to 30 feet above sea level and is generally flowing away from the Mokelumne River. 4.2.2 ANALYTICAL RESULTS One ground water sample was collected from W-1 and was submitted to Chemwest rAnalytical Laboratory for analysis. Sampling procedures and the requested chemical analysis are discussed in Section 3.2. The laboratory report for the ground water sample is included in Appendix C. No halogenated or aromatic volatile organics, analyzed by EPA Methods 601 and 602, and no total petroleum hydrocarbons, analyzed by EPA Method 418.1, were detected at concentrations above the reporting limits. 137-88-1663 15