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Executive Summary On June 20, 1995 Tiki Lagun Resort&Marina retained Blasland,Bouck&Lee, `" Inc. (BBL) to perform a Phase I Environmental Site Assessment of the Tiki Lagun Resort&Marina located near Stockton, California. The approximately 8.6 acre property gently slopes toward the Turner Cut Marina and is bisected by 6— West McDonald Road. The marina covers approximately 7.7 acres of leased water. The following summarizes our findings. s- The subject property is used as the Tiki Lagun Resort&Marina. The marina consists of three covered boat sheds with 271 boat slips, a concrete launch ramp, and a marine fueling dock. The campground has 40 RV sites and 64 •— tent sites. There is a resident house (approx. 1,200 square feet), an office/store (approx. 600 square feet), a pump house (approx. 500 square feet),an old pump house(approx.200 square feet), laundry facilities and hot �.. water showers. • The subject property has four above ground storage tanks(ASTs); one 4,000 i. gallon super unleaded gasoline tank,one 4,000 gallon plus unleaded gasoline tank,one 2,000 gallon diesel tank,and an above ground 1,500 gallon propane tank. The diesel AST was installed in 1993. Prior to that time there was a �. 2,000 gallon diesel underground storage tank(UST)tank which was removed on December 16, 1993. According to the San Joaquin County Tank Removal Inspection Report, odors or ground water were not encountered during the excavation and removal. During the removal two soil samples were collected and analyzed for lead, ethylene dibromide, and volatile hydrocarbons as gasoline,with benzene,toluene,ethylbenzene,and xylene. Analytical results �. from McCampbell Analytical Inc.of Pacheco showed lead at levels of 10 and 5.2 mg/kg in sample T1-B and TI-S respectively, and levels of Total Petroleum Hydrocarbons TPH- gasoline(6.7 mg/kg),benzene(0.34 mg/kg,) 16. toluene(0.50 mg/kg),ethylbenzene(0.090 mg/kg),and xylenes(0.11 mg/kg) in sample T1-B;no other compounds were detected. On September 26, 1995, Blasland, Bouck& Lee, Inc. conducted a re-excavation of the tank area and collected eight soil samples. Laboratory analysis revealed all analates below detectable levels. • The review of federal, state, and county regulatory agency reports identified the subject site as having an underground storage tank. No other sites were identified within the vicinity of the subject property. Local regulatory agency records from the Environmental Health Division of the San Joaquin County Public Health Services(PHS/EHD)revealed that an underground diesel storage tank had been removed on September 16, 1993, and that a "Notice of Reimbursement" was issued notifying Tiki Lagun Resort & Marina that they had been assigned to the PHS/EHD Local UST Oversight Program. of Sewage generated at the site is discharged to several on-site septic tanks. BLASLAND,BOUCK&LEE,INC. --5[7/96 engineers & scientists 1