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E? <br /> C 0109 c01 rech`tccs t9c. <br /> L1101 7`h street <br /> Modes €k <br /> to,California 95354 <br /> (209)522-4119/Fax(209)522-4227 <br /> i <br /> L <br /> i <br /> Work Plan i <br /> Well Abandonment <br /> City of Escalon <br /> Former Arco Gas Mini Mart <br /> �'. 1305 Escalon Ave.4 <br /> Escalon, CA <br /> Ek <br /> I'. <br /> Project No. 750.2 <br /> August 11, 2005 <br /> ' II <br /> !y <br /> 1.0 INTRODUCTION <br /> ,t <br /> The City of Escalon site (COE) is located at 1305 Escalon Ave, Escalon, California in the <br /> Highway 120/McHenry Avenue Improvement Project. Figure 1 is a vicinity map and Figure <br /> 2 is a site map. This property was previously an Arco Gas'and Mini Mart. <br /> ft < <br /> 4 Previous work at this site, performed between 1996 and 1999, includes two limited soil <br /> borings, soil sample analysis, and the removal of the USTs and pump islands. During <br /> removal activities, soil samples were collected which showed the presence of BTEX, TPH-G <br /> and MTBE. <br /> On February 12 and 23, 1999 Geological Technics Inc. (GTI) drilled six boreholes, collected { <br /> soil and groundwater samples (including one groundwaier sample from each borehole via <br /> hydropunch methods) and tested these samples for peroleum <br /> � <br /> hydrocarbons. Analytical <br /> results show the presence of BTEX, TPH-G and oxygenated fuel compounds in the soil and <br /> groundwater. <br /> From April of 1999 through January of 2000 three groundwater monitoring wells and four <br /> vapor extraction wells were installed on the site. Soil samples collected during the drilling of <br /> these wells show low to moderate levels of BTEX, TPH-G, MTBE and TBA in MW-1. Low <br /> levels of MTBE were detected in MW-2. Soil samples collected from VEW 1 1 showed low <br /> levels of Xylene and MTBE: •� <br /> i� <br />