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i BJJ Co Surface drainage as shown on the USES topographic sheet, ('LATE TI_1 is generally west/southwest, from BJJ towards Husky Crane. Based on limited data, the groundwater gradient appears to be divergent, in a general south/southeasterly direction Although c nt was encountered during investigative work at Husky Crane at 6' b l immediately adjacent to the BJJ Co. Property, the source of that contamination has not yet been determined. According to the available records, there was no evidence of soil contamination during installation of the UST' s on the adjacent BJJ site In November, 1992, WJH submitted a workplan to the San Joaquin County PHS-EHD to place six ( 6) soil borings around the site of the removed UST to determine the lateral extent of arty possible soil contamination. The locations of those proposed soil borings are shown on PLATE VII. However, due to budget constraints, that work was not done On August 25, 1994, the workplan was .resubmitted by WJH, with minor changes as agreed to by the County EHD. This report covers the details of that work, and the results obtained A copy of • that workplan is .included as EXHIBIT H PLATE VIII is a site map showing the final locations of the soil borings- RESULTS OF WORK PERFORMED ON OCTOBER 3 & 13, 1994 , UNDER WORKPLAN DATED AUGUST 25, 1994. October 3 1994 - Wm J. Hunter, RG, arrived on site at 0800 , V & W Drilling Co_ auger rig & support truck had arrived shortly before. The locations of the 6 soil borings were marked off , and the workplan was discussed with the crew and Mr Johns of Husky Crane Because of the interference of overhead power lines, location F ' could not be drilled with this rig- The rig was mobilized on so-il__boring_' B' as shown on PLATE VIII : Tim Whitney driller, Bob Vickery, helper The rag was equipped with 5' lengths of 8 1/4" hollow stern augers, they had been thoroughly decontaminated prior to arriving on location The coring assembly consisted of an 18" California Modified split-- spoon sampler which utilized 1-1/2' diameter metal tubes. Two core barrels were available, while one was in use, the other will be emptied, thoroughly cleaned with Alconox & clean water, filled with new tubes, and set aside until needed Drell cuttings and unused core material will be placed in metal drums, they will be tightly sealed & labeled, and stored on location pending receipt of laboratory analyzes Don Light, from Del-Tech Geotechnical , arrived on location to assist augering operations. A properly field calibrated PTD 5