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t <br /> h'9 KLEINFELDER <br /> File No. 20-4054-O1.E01 <br /> May 1, 1997 <br /> SCOPE OF WORK <br /> Drilling Permit and Work Plan Submittal <br /> Kleinfelder proposes to advance six (6) exploratory Hydropunch IITm soil borings on the project. <br /> Kleinfelder will collect soil samples and Hydropunch IITM water samples from the borings. The <br /> San Joaquin County Public Health Services Department Environmental Health Division <br /> (PHS/EHD) requires a workplan and boring permit application for exploratory soil borings <br /> drilled for site assessment purposes. The proposed soil/Hydropunch IITm borings will require <br /> boring permits. Kleinfelder will also prepare a health and safety plan for use in the field. <br /> Drilling of Borings and Soil Sample Collection <br /> A total of 6 Hydropunch IITm soil borings will be drilled on the site. Each of the six soil boring <br /> locations will be checked with a cable/line locator. The soil borings will initially be hand <br /> augered to a depth of 8 feet bsg. The Hydropunch IITm soil borings will then be advanced using <br /> a truck-mounted drill rig equipped with 6-inch diameter hollow stem augers. Soil samples will <br /> be collected beginning at a depth of 5 feet and every 5 feet thereafter for logging purposes and <br /> potential chemical analysis. The borings will be drilled, logged, and sampled according to the <br /> protocol described in Attachment B. The soil samples collected will be field screened using an <br /> organic vapor detector as described in Attachment B, Section B-2.2. The borings will be <br /> advanced to a maximum depth of 25 feet or until groundwater is encountered. Based upon <br /> Kleinfelder's experience in the area and data from the Espana report, groundwater is anticipated <br /> to be at a depth of 10 to 20 feet below grade. Groundwater samples will be collected using a <br /> Hydropunch II TM sampling device as described in Attachment A, Section A-2.4. <br /> The soil borings will be closed in accordance with the protocol described in Attachment A. Soil <br /> cuttings generated while drilling will be placed on and covered by visqueen and stored on site <br /> pending chemical analysis. Water generated during steam cleaning of auger and/or equipment <br /> will be left on site in labeled 55-gallon drums. Analysis and disposal of drill cutting and steam <br /> cleaning water is not included in this proposal. <br /> 20-4054-01.E01-G0112017PO36 Page 2 of 7 Copyright 1997 Kleinfelder,Inc. <br />