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i <br /> r <br /> . Work Objectives/Scope: Conduct soil and groundwater investigation related to a former <br /> underground storage tank(UST) For this investigation, soil and groundwater grab samples will <br /> be collected from eleven (11) soil borings using a Geoprobe 5400 Direct Penetration Technology <br /> (DPT)ng <br /> ' Activities Planned (Check those that are applicable) <br /> IEUnderground storage tank removal <br /> oversight of soil excavation with backhoe or other equipment <br /> Confirmation soil sampling during soil excavation and removal <br /> soil gas survey <br /> X soil bonng and soil and groundwater grab sampling <br /> drilling of wells, including installation, development and sampling of groundwater <br /> and soil <br /> Groundwater sampling of onsite wells <br /> other <br /> rt <br /> r <br /> II. SITE INFORMATION <br /> Site Description: The site is located at 392 South Moffat Boulevard in the city of Manteca <br /> (San Joaquin County), California The site is a vacant agricultural commissioner's office Work <br /> is also planned at the Recycling Center at 430 South Moffat Boulevard, immediately east of the <br /> subject site <br /> Unusual Features: Possible underground utility lines Underground Service Alert(USA) will <br /> be called at least 48 hours prior to site work Geoprobe operator will be asked to band auger <br /> and/or probe to five feet below ground surface (bgs) if dnlling near any underground utility lines. <br /> Site Background[History: The site formerly contained three USTs The USTs contained <br /> unleaded gasoline and weed oil (i e ,diesel fuel) until they were removed in 1988 Soil beneath <br /> ' the USTs contained up to 9,900 parts per million (ppm) of Total Extractable Petroleum <br /> Hydrocarbons (TEPH) and 18 ppm of Total Volatile Petroleum Hydrocarbons(TVPH) <br /> Groundwater was not encountered at a maximum excavation depth of 10 feet bgs The extent of <br /> impacted soil was not defined <br /> r 2 <br /> 1 <br />