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2) Obtain well drilling permits and contact U S Alert to mark any possible underground utilities. Notify the San Joaquin County Environmental Health Division (SJCEHD) 48 hours prior to initiation of field work. 3) Advance six soil borings, three of which will be converted into 2 inch diameter monitoring wells to an approximate depth of 40 ft or ten feet into the saturated zone whichever occurs first, using a truck mounted drill rig and 8-inch diameter hollow-stem augers near the former Tank Pit area, as shown in Figure 2 . The soil borings not anticipated to be converted into wells, will be advanced to approximately 30 ft, but shall not extend into the existing groundwater level. The screened portion of the well will be fifteen feet in length, from the bottom of the well to approximately five feet above the existing groundwater level. Sand pack will extend 17 feet from the bottom of the well. Then two feet of Bentonite pellets for a seal will be place above the sand pack, the remaining portion of the well will be cement grout to approximately 1 foot below grade. A traffic proof vault will be placed at the well--head and a locking cap, with lock, placed on the casing to secure the well. The borings which will be converted into wells will be identified as MW-1, MW-2 and MW--3 . The other soil borings shall be labeled B- 1, B-2 and B-3 . The borings will be backfilled with grout. A typical well construction diagram is enclosed as Figure 3 . I 4) Collect soil samples at each 5 ft level interval or at significant changes in lithology commencing at a depth of approximately ten feet, using a split spoon tube sampler loaded with pre-cleaned brass tubes. It is assumed that the upper 10 feet is disturbed soil that is known to be backfill and would not provide meaningful data. A maximum of 30 soil samples are anticipated to be collected. 5) Sampling equipment will be decontaminated using tri-sodium phosphate solution (TSP) and twice rinsed with the last rinse using distilled water prior to sampling. 6) Soil samples collected in the lowest brass liner will be preserved by covering both ends with Teflon tape, capping with plastic caps and sealing the caps with plastic tape. Soil samples will be labeled and logged under Chain-of- Custody (COC) control. Soil samples will be stored in a cooler with ice, transported to a state certified laboratory for analysis with COC documentation. 4