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11A Stockton, is located near the intersection of Tam O'Shanter and Swain Road; ( Plate IV. ) Other wells that were located are owned by California Water Service; the location and number of wells near the subject property are shown on Plate IV. DEPTH TO WATER TABLE: According to the latest published map issued by the San Joaquin County Flood Control and Water Conservation District, (Plate V,) the water table at this location is approximately -40 feet, or about 58 feet below ground level. REVIEW OF WORK DONE SINCE BEGINNING OF PROJECT: On March 297 1989, Jim Thorpe Oil , Inc. performed an annual Tank System Tightness test on a 17000 gallon underground gasoline storage tank located at 6215 Tam O'Shanter Drive, Stockton, California. The tank tested satisfactorily, but a collar leak was noted in the product line, which was bled down and capped off prior to the Lest. On June B, 1989, Jim Thorpe Oil, Inc. failed a Permanent Closure/Tank Removal Plan to the SJLHD for the above referenced tank. The pian was approved, with conditions, on July 7, 1989. Required soil tests specified by the SJLHD were BTX&E, TPH-G, EDB, and TEL. (Refar to Exhibit D and Plate VI for details. ) On July 12, 1989, Jim Thorpe [ail removed the UST and approximately 25 cubic yards of spoil. A strong gasoline odor was noted, and discolored soil was observed at the west end of the excavation near the pump island and fill and of the tank. Samples were taken at the east and west end of the tank approximately 12' below ground level, and 2' below the bottom of the tank, (refer to Plate VI1 and Exhibit F.) Samples were collected in brass tubes by Canonie Laboratory personal under Chain-of-Custody, (see Exhibit E. ) The spoil was returned to the hole, covered with plastic, and approximately 6 cubic yards of clean fill was added to bring the excavation back to grade. The samples were analyzed on July 31, 1989, and showed de'_ectable levels of BTX&E, EDB, and TPH-G in the sample from the west end of the tank, (2W.) The sample at the east end, IE, showed all tested substances to be below reporting le,.els; (Table 1.) ;1R> On October 10, 1989, Jim Thorpe Oil submitted a Site Re-Excavation/ Resample Work Plan to the SJLHD; (Exhibit G.) Upon receiving verbal approval to. proceed from the SJLHD, Thorpe Oil moved onto location On January 19, 1990, and removed the clean fill dirt, plastic, and spoil which had been returned to the hole after removing the UST and