COMPLIANCE INFO_1996-1999 DOUBLE CHECK

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At the time of our arrival at the site on September 18, 1996, the product dispensers and concrete drive slab had been removed. In addition the pea gravel backfill which surrounded the tanks had been removed to expose the top of the tanks. The UST's had been drained of product, rinsed and explosive vapors evacuated to acceptable limits through the use of dry ice. After removal of the pea gravel backfill to approximately the bottom half of the tanks, the tanks were removed from the excavation by use of a crane and inspected for the presence of leaks or holes. Excavation activities were performed by Wilkey Engineering and witnessed by Mr. Michael Kith of the San Joaquin County Public Health Services (SJCPHS) and Mr. Art Sandman of the City of Stockton Fire Department. Excavation permits and manifesting of the tanks for transportation was handled by Walton Engineering. At the request of the SJCPHS the southern most UST was referred to as T-1 and the northern most UST as T-4 (Figure 2). UST T-1 and T-2 were both 10,000 gallon tanks used for the storage of gasoline. Upon removal, the tanks appeared to be in very good condition with no observable leaks or holes. UST T-3 was an 8,000 gallon tank used for the storage of gasoline and UST T-4 was an 8,000 gallon tank used for the storage of diesel fuel. Upon removal, the tanks appeared to be in very good condition with no observable leaks or holes. After inspection the tanks were painted with a transportation number and placed on trucks from Erikson Trucking for removal from the site. UST T-1 was numbered 39-1261-01, UST T-2 was numbered 39-1261-02, UST T-3 was numbered 39-1261-03 and UST T-4 was numbered 39-1261-04. I The resultant excavation was approximately 32 feet wide and 42 feet long and 8 to 10 feet deep. Exploration of the bottom of the excavation with an excavator found that the tanks were resting on a foundation of approximately two feet of pea gravel. The tank • MMWA24.281\USTAFT 12"CT-981