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. • - r • <br /> ENGEOGEOTECHNICAL AND ENVIRONMENTAL CONSULTANTS <br /> I N C O R P O R A T E D MATERIALS TESTING <br /> Proj ect No. <br /> 5044.5.001.01 <br /> March 2, 2006 <br /> Mr. Michael Infurna <br /> Environmental Health Department, San Joaquin County <br /> 304 East Weber Avenue <br /> Stockton, California 95202-2708 <br /> Subject: Stewart Tracts 31 and 32 <br /> APNs 213-290-02 and 213-290-17 <br /> Lathrop, California <br /> WORK PLAN FOR GROUNDWATER STUDY <br /> Dear Mr. Infuma: <br /> As requested by our client, River Islands (Califia), ENGEO Incorporated has prepared this work <br /> plan for a groundwater study of the subject property, located in the Lathrop area of San Joaquin <br /> County, California (Figure 1). We present this work plan to the San Joaquin County <br /> Environmental Health Department and request approval to perform the services described below. <br /> The purpose of our services is to provide a preliminary evaluation of the groundwater conditions <br /> and to establish background water quality data for the site. <br /> PROJECT DESCRIPTION <br /> The study area is identified as Tracts 31 and 32, and consists of approximately 280 acres located <br /> to the west of Interstate 5, southwest of the San Joaquin River and northeast of Paradise Cut. As <br /> can be seen on Figure 2, the site is bounded by Paradise Cut on the southwest, Manthey Road <br /> and Interstate 5 on the east-southeast, the Union Pacific Railroad (formerly Southern Pacific <br /> Railroad)to the west-northwest, and rural residential homes to the northeast. <br /> SCOPE OF SERVICES <br /> Our project scope includes direct pushing of Hydropunches to obtain water samples for <br /> characterization of the shallow aquifer. <br /> We will coordinate with a licensed drilling contractor to push a total of eleven direct push <br /> Hydropunches to groundwater within the site at the locations shown on Figure 2. Subsurface <br /> activities will be accomplished using a Geoprobe 5400 direct push rig equipped with 2-inch <br /> diameter hollow push probe rods. These proposed hydropunches will extend to depths of <br /> approximately 13 to 33 feet below existing grade and will be conducted on March 8 and 9, 2006. <br /> 2880 North Tracy Boulevard•Suite 3•Tracy,CA 95376•(209)835-0610•Fax(209)835-0675 <br /> w .engeo.com <br />