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1.0 INTRODUCTION <br /> On behalf of Mr Bachitar Singh, property owner for the Jahant Food and Fuel site, Ramage <br /> Environmental has prepared this Environmental Site Investigation Report for submittal to the <br />' San Joaquin County Public Health Services Environmental Health Division (PHSIEHD) and the <br /> Central Valley Regional Water Quality Control Board (RWQCB) <br /> The site investigation was completed in accordance with Ramage Environmental's Work Plan, <br /> Environmental Site Investigation, dated June 16, 1999 On July 20, 1999, PHSIEHD approved <br />' the work plan A copy of the work plan approval is included in Appendix A <br />' On September 1, 1999, the cost to implement the approved scope of work was pre-approved by <br /> the State Water Resources Control Board Underground Storage Tank Cleanup Fund (USTCF) <br /> under Claim #13115 The USTCF cost pre-approval letter is also included in Appendix A <br /> 1 <br /> 1.1 Site Description <br /> The subject property is located at 24323 North Highway 99 in the town of Acampo in northern <br /> San Joaquin County, California (Figure 1) The property is situated immediately west of Highway <br /> 99 and immediately north of the Jahant Road exit ramp It is an active gasoline and diesel fuel <br /> service station and mini-market (Figure 2) <br /> 12 Previous Work <br /> On January 22, 1998, under PHSIEHD observation, L&M Construction removed three <br /> underground storage tanks (UST) at the site The removed USTs included two 10,000-gallon <br /> and one 6,000-gallon unleaded gasoline steel tanks According to the PHSIEHD inspection <br /> notes, each of the USTs was in poor condition, but without noticeable holes The UST <br /> excavation was extended to the north to include the southern dispensers on both dispenser <br /> islands The northern ends of both islands did not include dispensers A total of eight soil <br /> samples were collected from the excavation (Figure 3) Two soil samples were collected from <br /> beneath each of the three USTs and one soil sample was collected from each of the former <br /> dispensers All eight of the soil samples were analyzed for Total Petroleum Hydrocarbons <br /> (TPH)-as-gasoline and benzene, toluene, ethylbenzene, xylenes (BTEX) by Modified EPA <br />' Method 802018015, for the oxygenate additive compounds methyl tertiary butyl ether (MTBE), di- <br /> isopropyl ether (DIPE), ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether (TAME) and <br /> tertiary butanol (TBA) by EPA Method 8260, and for total lead by EPA Method 6010 <br /> 3 <br /> I <br />