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h9j KLEINFELDER File No. 20-3978-01.W22 February 6, 1997 The Hydropunch II'm soil borings will be advanced using a truck-mounted drill rig equipped with 6-inch diameter hollow stem augers. Soil samples will be collected beginning at a depth of 5 feet and every 5 feet thereafter for logging purposes and potential chemical analysis. The borings will be drilled, logged, and sampled according to the protocol described in Attachment B. The soil samples collected will be field screened 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 or until groundwater is encountered. Based upon previous investigations at the Spreckels property, groundwater is anticipated to be at a depth of 10 to 20 feet below grade. Groundwater samples will be collected using a Hydropunch IIT"" sampling device as described in Attachment B, Section B-2.4. The soil borings will be closed in accordance with the protocol described in Attachment B. Soil cuttings generated while drilling will be placed on and covered by visqueen and stored on site pending chemical analysis. Water generated during steam cleaning of auger and/or equipment will be left on site in labeled 55-gallon drums. Analysis and disposal of drill cutting and steam cleaning water is not included in this proposal. Laboratory Analysis Each of the soil and water samples selected for quantitative analysis will be submitted under chain-of-custody control to Sequoia Analytical Laboratories (Sequoia) of Sacramento, California. Sequoia is certified by the California Department of Toxic Substances to perform the requested analyses. It is anticipated that samples will be analyzed on a normal laboratory turnaround schedule, which usually requires up to 10 working days for receipt of analytical data. Up to two soil samples and one water sample from each boring location will be submitted for analysis. The samples will be selected based upon field observations, qualitative field screening results, and the depth in.the boring. Each of the soil and water samples will be analyzed for: • Total Extractable Petroleum Hydrocarbons (TPH ext.) as diesel fuel and motor oil • CAM 17 metals • Volatile organic compounds by EPA Method 8240 open scan • Semi-volatile organic compounds by EPA Method 8270 open scan 20-3978-O1.W22/207PE048 Page 3 of 01997,Kleinfelder, Inc.