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' Site Background Information R M B Garage (Erardz Ventures) <br /> Page 4 of 4 <br />' nominal 2-foot bentonite chip plug was installed above the filter pack and hydrated The wells were <br /> then grouted to near the surface with Portland cement,and water-tight,traffic-rated well boxes were <br /> installed over the wells <br />' TPH-g was detected In twelve of the soil samples collected from borings MW-1 through MW-4 and <br /> B5 at concentrations ranging from 13 mg/kg In sample MW-4-30 to 2,200 mg/kg In sample <br />' MW-3-30 TPH-d was detected in four samples at concentrations ranging from 20 mg/kg (135-24) <br /> to 200 mg/kg(MW-4-40),and TPH-mo was detected In one sample at a concentration of 870 mg/kg <br /> (MW-3-30) <br />' One or more BTEX compounds were detected In samples collected from borings MW-1 through <br /> MW-4 and B5, the maximum concentrations were detected from sample MW-3-30 at 11 mg/kg <br />' benzene, 79 mg/kg toluene, 33 mg/kg ethylbenzene, and 128 mg/kg total xylenes <br /> 1 <br /> 1 • <br /> I <br /> I <br /> • <br />' Advanced GeoEnvironmental,Inc <br />