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as EXHIBIT D. The soil samples were analysed for BTEX, TVPH, EDB, & total lead; results, tabulated on TABLE 1 . showed very high levels of BTEX & TVPH, with total lead ranging from 44 to 64 mg/kg. EDB was below ' detection levels in all samples. The laboratory worksheets, test methods, and chain of custody are included as EXHIBIT E. ' On February 17, 1993, the San Joaquin County Environmental Health Division issued a letter to the owners requiring that because levels of contamination encountered during tank removal opera- tions exceeded allowable limits, a groundwater investigation will be necessary. Time limits were given for compliance with State & local regulations; refer to EXHIBIT F for a copy of that letter. Wm. J. Hunter & Associates were retained by the owners to prepare a workplan and supervise the placing of three (3) groundwater monitoring wells in an attempt to assess the extent and levels of 1 possible contamination that may be present on the site. After a request for a time extension was denied, (refer to FMIBIT ) a workplan was prepared and submitted to the County EHD on March 25, 1993; refer to MI$IT for a copy of that document. DETAILS OF WORK COVERED BY THIS REPORT= ' Work began on April 15, 1993, using a Spectrum Exploration auger rig operated by Joel Stapleton, driller, and Steve Tredwell , helper, under the supervision of Wm. Hunter, RG, of Wm. J. Hunter ' & Associates, (WJH. ) After a safety meeting and discussion of work to be performed, the rig was located over monitoring well #2, it' s location and the other two had been previously marked by ' WJH prior to starting work. The rig was equipped with sufficient 8 1/4'. OD flights to drill and complete each well without having to steam--clean equipment ' between wells_ An 18" California Modified split--spoon sampler was used for obtaining cores as required. After removing asphalt with a "cookie cutter, " augering operations began at 0900. The ' top 3' of soil consisted of sticky black clay loam, which graded to a mottled brown clay. At a depth of 5' , the blank plug was pulled from the auger, and a core barrel equipped with 3, 6" long, 2" diameter clean brass tubes was lowered into the flights ' and the barrel was driven to 6' 6" using a conventional driving assembly with blow counts of 7--9--11 . ' Core recovery was 18" , which consisted of mottled brown clay grading to tan to brown slightly sticky clay. There was no evidence of petroleum odor or contamination. The ends of the 4