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Limited Subsurface Investigation PETE'S PLACE 9355 West Highway 4, Stockton, California 1.0. INTRODUCTION At the request of Temecula Valley Bank and Mr. Ayesh H. Ayesh,Advanced GeoEnvironmental, Inc. (AGE) has prepared this Limited Subsurface Investigation Report for the site located at 9355 West Highway 4, Stockton, California(the site). The work was performed as part of due diligence for a property transaction. The scope of work included advancement of four soil borings for collection and analysis of soil and`grab'ground water samples,sampling and analysis of the on-site domestic well and preparation of this report of findings. The location of the site is illustrated on Figure 1. A plan of the site is illustrated on Figure 2. 2.0. BACKGROUND The site, located at 9355 West Highway 4, San Joaquin County, California,is situated in an area of mixed commercial and light industrial use. Historical site usage research performed by AGE has indicated that the southeast portion of the site was occupied by a gasoline service station from approximately the 1950s until the early 1970s.The site is currently operated as a restaurant and bar. One domestic drinking water well is located at the west side of the current building. 2.1. PREVIOUS INVESTIGATIONS It is our understanding that two underground storage tanks(USTs),a 12,000-gallon regular gasoline UST and an 8,000-gallon unleaded gasoline UST,were removed from the site in June 1991.Ground water was encountered during tank removal.The excavation was backfilled with the excavated soil. FGL Environmental Laboratories sampled both water and soil from the excavation. The samples were analyzed for total petroleum hydrocarbons(TPH-g),total lead,ethylene dibromide(EDB)and volatile aromatics(benzene,toluene,ethylbenzene and xylenes:BTEX).TPH-g was detected in the water sample collected from beneath the 12,000-gallon tank at a concentration of 24 milligrams per liter(mg/l,parts per million). During the installation of a monitoring well at the site,petroleum hydrocarbon contamination was encountered in the soil sample collected from 10 feet below surface grade (bsg), at 0.0054 mg/kg (parts per million). Ground water collected from the well on the site did not indicate petroleum hydrocarbon contamination. No further investigation was recommended for the site and the destruction of the monitoring well on-site was required by the San Joaquin County Environmental Health Department(EHD). Advanced Gen Environmental,Inc.