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Report of Findings of Soil Sampling and Analysis Page 2 2216 STEWART STREET August 13,2008 WICA No. 8214.01 the San Joaquin Valley are largely unconsolidated silts and sands derived from river channel, flood plain and alluvial fan deposits of Pliocene to Recent age. Review of the Spring 2003 San Joaquin County Flood Control and Water Conservation District Lines of Equal Elevation of Groundwater Map reveals groundwater beneath the property at approximately 55 feet below the land surface and regional groundwater flow direction to be towards the east. Regional groundwater flow direction can be affected by stage fluctuation of the nearby Stockton Deep Water Channel, Mormon Slough, ground water pumping, time of year and other factors. Previous Tank Removal and Soil Sampling Activities Based on historic data the former 5,000-gallon UST was removed on October 6, 1989 by PCI Environmental Engineering. The tank was reportedly a steel tank described to be in good condition at removal with an approximate burial depth of 10 feet below ground surface (bgs). The subsurface soil at approximately 10 feet bgs was described as sandy loam. Subsequent to removal of the UST, soil samples 5000-E and 5000-W were obtained using a backhoe approximately two to four feet into the native soil beneath each end of the former UST excavation. The samples were labeled, placed on dry ice and submitted under Chain-of-Custody documentation to Eureka Laboratory in Sacramento, California for the following chemical analysis: • Total Petroleum Hydrocarbons (TPH) • Benzene, Toluene, Ethylbenzene, and Total Xylenes (BTEC, Tetraethyl Lead(TEL) and Ethylene Dibromide(EDB) TPH, BTEX, TEL and EDB were not detected in the soil samples at or above the method detection limit. The Underground Tank Closure/Abandonment Inspection Report Site Plan and Soil Sampling Report are included in Appendix A.