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KLEINFELDER File No. 20-3978-0I.P02 November 12, 1996 Drilling of Borings and Sample Collection A total of sixteen (4 each in the 4 ponds) borings will be drilled in the lime ponds (refer to Plate 2). The exploratory borings will be advanced using a truck-mounted drill rig equipped with 6- inch diameter hollow stem augers. Lime samples will be collected beginning at a depth of 5 feet and every 5 feet thereafter for logging purposes and analysis. The borings will be drilled, logged, and sampled according to the protocol described in Attachment B. Due to reports that 55-gallon drums may be buried in the lime pond levees, the samples collected will be field screened for volatile organic compounds using an organic vapor detector as described in Attachment B, Section B-2.2. The borings will be advanced to a maximum depth of 25 feet below the top of the ponds, or to the first encountered native soils. Because the borings are not anticipated to penetrate the ground surface, the borings will be closed by backfilling them with the lime pond cuttings. All equipment (including trucks and drill rigs) will be steam cleaned prior to leaving the site. The equipment will be steam cleaned on open ground adjacent to the lime ponds. The steam cleaning water will not be contained. Laboratory Analysis All of the samples collected (maximum 80 samples) will be submitted under chain-of-custody control to Asbestech of Sacramento, California. Asbestech is certified by the State of California under the United States Environmental Protection Agency-National Voluntary Laboratory Accreditation Program (NVLAP) administered by the National Institute of Standards and Technology for the analysis using the appropriate AHERA protocols. It is anticipated that samples will be analyzed on a normal laboratory turnaround schedule, which usually requires up to 5 to 10 working days for receipt of analytical data. The bulk samples submitted will be analyzed for asbestos content by Polarized Light Microscopy (PLM). REPORT PREPARATION Upon completion of the lime pond sampling and our receipt and review of the analytical results, a report will be prepared for client review. The report will include: • A description of field activities, observations, and protocols; • Lithologic logs and, if appropriate, interpreted geologic cross sections; • Tabularized results of sample analysis with copies of certified analytical laboratory results with chain-of-custody documentation; • Conclusions and recommendations. 20-3978-011h4P960131/MW960013 Page 2 of 01996, Klelnfelder,Inc.