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t r ®r. DEPTH TO GROUNDWATER: No records of any wells in the immediate vicinity were found, but the Fall 1999 edition of the San Joaquin CO- Flood Control and Water Conservation District IV,) shows that 'the depth to the water table is about Map, (Platt below ground surface. 15', or 23' Water depths in monitoring walls to the north of the property were in close agreement with this map. No water or significant moisture was encountered during excavation. LOCATION OF MUNICAL & MONITORING WELLS: The latest ini ormation available to the writer showsthat the nearest municipal water wells are approximately pproximatel 1/2 mile to the north and 1/2 mile to the southeast. The nearest monitoring well is about 8/10ths of a mile to the northwest on or near Moffat Blvd. Refer to Plate XI for more detail. PRIOR HISTORY OF SITE: The office adjacent to the UST locatiin is currently vacant, but had been occupied by a Pony Express Courier service; the tank was used to service the flee;: of vehicles used by the company. There at-2 no records avail&ble concerning fuel usage or amount of spillage, if any. On August 24, 1989, Jim Thorpe Oil, Inc. removed one (i) 1,00x] gallon underground storage tank which had contained gnleaded gasoline. A slight gasoline odor was noted during tank r-.maval but no sail discoloration or other evidence of cr leakage ' was evident in the spoil removed or the excavation. The tank and Piping were in gaud condition. The tank was triple-rinsed and . disposed of properly, (rifer to Exhibit"B". ) Two (2) soil samples were taken by Canonie Environmental beneath the tank cradles at depths of S' at the north end a to Plate VII far locations �f' and 10' at the two samples,southThe end*resRefer the the laboratory analyses showed dz Eectablts of e amounts of Xylene and TVPH; refer to Table 1 for details. At the.conclusian of this work, the excavation was approximately 14' lung X 8' wide X 6' deep. The removed spoil, about 25 cubic yards, was placed on plastic in an empty storage yard adjacent to the Oxcay.ation, (refer to Plate VI. ) On April 26, 1990, Jim Thorpe oil, Inc. submitted a sail re-exca- vation/resample workplan (refer to Exhibit "C",) to enlarge the existing excavation to approximately 22' X 14' X 17' removing an additional 169 cubic yardsof spoil . Soil samples were proposed to be taken as shown an Plates j IX. In addition, 2 composite samples were to be taken fromlII the&excavated spoil to assist in future soil remediation. REVIEW OF LATEST WORK PERFORMED: On August 7, 1990, Jim Thorpe Oil, Inc. moved in equipment and - began remavin 9 8- call from the existing excavation, The sediments . consisted of. very fine to fins sand, tan to brownish-tan, very i. yrs ... ... .. .. ..,