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0 i <br /> Geological Technics I/tc. <br /> 1101 7`h Street <br /> Modesto,California 95354 <br /> (209)522-4119/Fax(209)522-4227 <br /> Work Plan <br /> Phase II Environmental Assessment — Soil Investigation <br /> Medina Wood Products, Inc. <br /> 26342 S. Banta Road <br /> Tracy, CA 95378-1037 <br /> APN: 252-150-06 <br /> Project No. 1274.2.2 <br /> May 26, 2006 <br /> 1.0 PROPOSED INVESTIGATION <br /> The purpose of this investigation is to assess the possibility that soil around the metal storage <br /> building at the site has been impacted by Organochlorine Pesticides (OCP) or Volatile <br /> Organic Compounds (VOC) as a result of past business practices. Geological Technics Inc. <br /> (GTI) proposes to install two Geoprobe boreholes, collect two soil samples from each <br /> borehole from shallow subsurface and at a depth of 16 ft and test these samples for <br /> Organochlorine Pesticides and Volatile Organic Compounds. <br /> 1.1 GeoProbe Survey <br /> The GeoProbe boreholes will be drilled outside the cargo doors on both ends of the metal <br /> storage building as proposed on the site map. Exact locations of the boreholes will be <br /> adjusted in the field due to utilities and other improvements. Soil samples will be collected <br /> continuously from the surface down to approximately 16 feet bgs. Two soil samples will be <br /> collected from each borehole. One sample will be collected from the surface and the other <br /> from approximately 16 ft bgs. <br /> The boreholes will be drilled with a Geoprobe rig owned and operated by V&W Drilling of <br /> Rio Vista, CA (C57# 720904). The Geoprobe advances a 1.25-inch O.D. coring tool with a <br /> pneumatic hammer to a selected depth. The soil sample enters an acetate cylinder contained <br /> in the coring tool. Upon filling, the coring tool is pulled from the hole and the cylinder is <br /> removed. The cylinder is then cut and the selected interval is capped with end caps and <br /> placed on ice for shipment to the laboratory. The remainder is used for geologic logging. <br />