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File No. 20-3978-02.E01 In KLEINFELDER <br /> October 30, 1996 <br /> barium, total sulfate, soluble chloride (DI water extraction), soluble barium (DI water <br /> extraction), soluble arsenic (DI water extraction) and soluble sulfate (DI water extraction). <br /> 2. Advancing a boring within each the four existing mud ponds to a depth of 15 feet below <br /> existing grade. Samples would be obtained at five foot intervals for logging purposes and <br /> potential chemical analysis. The samples obtained from the surface, and depths of 5 and 10 <br /> feet below existing grade in each boring would be composited into a single sample for <br /> chemical analysis. The single sample from each boring would be analyzed for the presence <br /> and concentration of pH, total and DI water soluble sulfate, total and DI water soluble <br /> arsenic, total and DI water soluble barium, organochlorine pesticides, and total and DI water <br /> soluble chloride. A portion of the surface soil sample would be analyzed for the presence and <br /> concentration of chlorinated herbicides and organochlorine pesticides. <br /> 3. Advancing a sludge sampler into the existing onsite wastewater pond to a depth of <br /> approximately 20 feet below existing grade. The sludge sample would be obtained for <br /> chemical analysis. The sample obtained would be homogenized and a single smaller volume <br /> sample would be submitted for chemical analysis. The single sample would be analyzed for <br /> the presence and concentration of pH, total and DI water soluble arsenic, total and DI water <br /> soluble barium, total and DI water soluble sulfate and total and DI water soluble chloride. <br /> 4. A single soil boring would be advanced in the orchard area to a depth of 20 feet to obtain soil <br /> samples for chemical analyses. Each of the five samples (surface, and the 5, 10, 15, and 20 <br /> foot deep samples). The samples would be analyzed for pH, total and DI water soluble <br /> arsenic, total and DI water soluble barium, total and DI water soluble chloride, and total and <br /> DI water soluble sulfate. Additionally, the surface soil sample would be analyzed for <br /> chlorinated herbicides and organochlorine pesticides. <br /> 5. The results of the chemical analysis performed would be summarized in a workplan for pond <br /> closure. The workplan would be submitted to Spreckels Development Company for review, <br /> and subsequently, the RWQCB. Because of the unknown quantity needed, meetings with the <br /> RWQCB and SDC, only 2 meetings are included in this revised proposal or cost estimate. <br /> (One to discuss the results with SDC and one with the RWQCB). <br /> 20-3978-02.EOI/MR960124 Page 3 of O1996, Kleinfelder, Inc. <br />