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Environmental Labs of Milpitas, California. Those soil filled liners were sealed with Teflon paper and plastic endcaps, labeled and logged onto a chain-of-custody form. The samples were placed on ice in a chilled ice chest and the "third party" left the site to take the samples directly to Priority Labs. Copies of the analytical data and chain-of-custody documentation are presented in Appendix A. SAMPLING - GROUNDWATER FIELD METHODS One groundwater sample was collected from the groundwater which had flooded the excavation. This sample was collected in a new one-liter bottle attached to the end of an aluminum pole with a stainless steel hose clamp, displacing the surface sediment, then lowering the bottle into the water, carefully bailing a sample to the edge of the open pit. The water sample was then carefully poured into the appropriate laboratory prepared container with minimum cavitation and headspace. The container was sealed, labeled and logged onto a chain-of- custody form. The samples were taken by the "third party" to Priority Environmental Labs, Inc. for analysis. Copies of the analytical data and chain-of-custody documentation are presented in Appendix A. SUBSURFACE CONDITIONS The site is either a natural land formation in the Old River or reclaimed land from the Sacramento-San Joaquin Delta. The island area in the delta is typically composed of alluvial river sediment of sand, clay and organic soils (peat) and organic muds. At the time the Wright representative observed the empty 3 to 4 foot deep excavation on November 11, 1995, it was dry. Later, on March 29, 1996, the pit had filled with about 18-24 inches of water. Depth to groundwater is assumed to occur at about 3 feet below grade in undisturbed sediments. The excavation was about 6.5 feet deep into the soil, which appeared to contain organic sediment with thin interbeds of sand. The sediment and soil are highly organic, and may approach 100%reduced organic matter in various stages of compaction, and may exhaust methane and other decomposition gases upon exposure to air. CHEMICAL ANALYTICAL METHODS AND RESULTS One water sample and ten soil samples were sent to Priority Environmental labs for chemical analysis. The samples were analyzed for Total Petroleum Hydrocarbons as Gasoline and as Diesel (TPHG, TPHD), Benzene, Toluene, Ethylbenzene and Xylene (BTEX), Methyl-Tertiary- Butyl-Ether (MTBE) and Lead using EPA Methods 5030/8015, 8020 and 7420. The results are presented in Tables 1 and 2 below. SOIL DISPOSAL SITE RESTORATION Soil from the tank excavation was stockpiled on and covered with plastic at the site by both representatives of the Estate and Wright personnel. On April 22, 1996 a Generator's Waste Profile Sheet was forwarded along with the analytical data to Altamont Landfill and Resource Recovery Facility in Livermore, CA (Altamont). On April 23, 1996 Altamont notified Wright that it would accept the soil for disposal as Class II cover. The soil was disposed of at Altamont on June 12, 1996. A copy of the soil profile acceptance letter and weight tickets from Altamont are provided in Appendix D.