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16 <br /> 10 INTRODUCTION <br /> On behalf of Mr Bachitar Singh, owner of the Jahant Food and Fuel property, Ramage <br /> Environmental has prepared this Groundwater Monrtonng Report, First Quarter 2003 for submittal <br /> to the San Joaquin County Environmental Health Division (EHD) and the Central Valley Regional <br />' Water Quality Control Board (RWQCB) The scope of work was completed according to Ramage <br /> Environmental's Letter Work Plan, Monitoring Well Installation and Groundwater Sampling, dated <br /> August 13, 2001 On September 13, 2001, EHD approved the work plan <br />' 1.1Sete Location and Description <br /> L ti n tion <br /> p <br /> The subject property is located at 24323 North Highway 99 in the sown of Acampo in northern San <br /> Joaquin County, California (Figure 1) The property is situated immediately west of Highway 99 <br />' 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) An operating domestic well is located approximately <br />' 100 feet northwest of the former USTs (Figure 2) <br /> 1.2 Previous Work <br /> M <br /> 1 2 1 Removal of UST S stem Soil Sampling, and Over-excavation <br /> On January 22, 1998, under EHD observation, L&M Construction removed three underground <br /> storage tanks (UST) at the site The removed USTs included two 10,000-gallon and one 6,000- <br /> gallon unleaded gasoline steel tanks According to the EHD inspection notes, each of the USTs <br /> was in poor condition, but without noticeable holes The UST excavation was extended to the <br /> north to include the southern dispensers on both dispenser islands The northern ends of both <br /> islands did not include dispensers A total of eight soil samples were collected from the <br /> excavation Two soil samples were collected from beneath each of the three USTs and one soil <br /> sample was collected from each of the former dispensers All eight of the soil samples were <br /> analyzed for Total Petroleum Hydrocarbons (TPH)-as-gasoline and benzene, toluene, <br /> ethylbenzene, xylenes (BTEX) by Modified EPA Method 802018015, for the oxygenate additive <br /> compounds methyl tertiary butyl ether (MTBE), di-isopropyl ether (DIPS), ethyl tertiary butyl ether <br /> (ETBE), tertiary amyl methyl ether(TAME) and tertiary butanol (TBA) by EPA Method 8260, and <br /> for total lead by EPA Method 6010 <br /> 1 <br /> 3 <br />