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Mr. Harlin Knoll, SJCEHD April 7,2006 <br /> Work Plan for Confirmation Soil Borings Project No.2007-0065-01 <br /> USA Station No. 65, Lodi, California <br /> Page 5 <br /> activities. A copy of Stratus' field practices and procedures that will be utilized during <br /> this work is provided in Appendix A. <br /> Task 1: Pre-field Activities <br /> Following approval of this Work Plan by SJCEHD personnel, the following activities <br /> will be completed: <br /> • Obtain soil boring permit(s) from SJCEHD, <br /> • Retain and schedule a licensed C-57 drilling contactor(s), <br /> • Update the health and safety plan for the site, <br /> • Mark boring locations and contact Underground Service Alert to locate <br /> underground utilities in the vicinity of the work site, and <br /> • Notify SJCEHD, USA, and the property owner (AKT Development) of the <br /> scheduled field activities. <br /> Task 2: Field Activities <br /> Task 2A: Soil Borings <br /> A licensed well driller will advance the soil borings CB-1 through CB-3 to approximately <br /> 55 feet bgs using a truck mounted or limited access drill rig equipped with 6-inch or 8-inch <br /> diameter hollow stem augers. The initial 5 feet of each boring will be advanced with a <br /> hand auger and/or posthole digger to reduce the possibility of damaging underground <br /> utilities. <br /> Soil samples will be collected in 5-foot intervals using a California-type, split-spoon <br /> sampler equipped with three pre-cleaned brass tubes. The ends of the bottom-most, intact <br /> tube from each sample interval will be lined with TeflonTm sheets, capped, and sealed. <br /> Each sample will then be labeled, placed in a rescalable plastic bag, and stored in an ice- <br /> chilled cooler. Strict chain-of-custody procedures will be followed from the time the <br /> samples are collected until the time the samples are relinquished to the laboratory. Soil <br /> contained in the remaining brass tubes will be screened for volatile organic compounds <br /> using a photoionization detector (PID). Stratus will record PID readings, soil types, and <br /> other pertinent geologic data on a borehole log. A minimum of four soil samples from each <br /> boring will be submitted for chemical analysis. Additional samples may be selected for <br /> chemical analysis based on soil type and field observations. Details regarding exploratory <br /> boring procedures are included in Appendix A. <br /> KAUSA Gasoline100651Workplanslusa65-boring-cpt-workplan.dor 51-RA U5 <br />