Laserfiche WebLink
Geological Technics Inc. <br /> 2741 River Road <br /> Modesto,California 95351 <br /> (209)538-6424/jaX#538-5852 <br /> Work Plan <br /> Soil & Groundwater Investigation <br /> Fonzia <br /> APN 233-460-07 <br /> 501 E. Acacia St, <br /> Tracy, California <br /> Project No. 774.2 <br /> April 26, 1999 <br /> 1.0 INTRODUCTION <br /> In October 1998, Geological Technics Inc. performed a Phase I ESA at the above referenced <br /> site. A Phase II ESA was performed during December 1998 and March 1999. The test <br /> results indicate that the soil remediation of 1995 effectively removed the source of oil in the <br /> soil at the Former Storage Area. In 1995 groundwater was deeper (-12 ft bgs) then it is now <br /> (-6 ft bgs). The low concentration of motor oil found in the groundwater in the Former <br /> Storage Area appears to be from residual soil below groundwater that was not removed in <br /> 1995. <br /> SJC PHS/EHD has requested that additional soil and groundwater samples be collected from <br /> below the bottom of the former excavation. <br /> 2.0 PROPOSED INVESTIGATION <br /> To further investigate the extent of soil and groundwater impacted with diesel and motor oil <br /> petroleum hydrocarbons, Geological Technics Inc. proposes drilling two boreholes using <br /> GeoProbe direct push methods. <br /> The work proposed includes: <br /> 1. Former Storage Area <br /> • Drill two GeoProbe boreholes (GP-14 & 15) around the former storage area to a depth <br /> of approximately 14 feet bgs. <br /> • Soil and groundwater samples (GP-16 will be collected from each borehole. <br /> 2. Background Area <br /> • Drill one GeoProbe borehole upgradient of the former storage area to a depth of <br /> approximately 14 feet bgs. <br />