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1eadwellMolb <br /> 9 September 1999 <br /> Project 2597.01 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Environmental Division <br /> 304 East Weber Street, third floor <br /> Stockton, California 95202 '# <br /> Subject: Work Plan for Soil and Groundwater Characterization J/VV/ROh, 1999 <br /> Stockton <br /> Department of Housing and Redevelopment pShore ParcelF�MSIE VRV, CSN <br /> Dear Ms. Lagorio: <br /> This work plan has been prepared by Treadwell & Rollo, Inc., on behalf of the Stockton <br /> Department of Housing and Redevelopment (DHR)to conduct a soil and groundwater <br /> investigation at five adjacent parcels in Stockton, California. The DHR has identified these sites <br /> as Area 10 (Fanner Island), 15 (Chase Chevrolet), Area 16 (Chase Chevrolet),Area 20 (Western <br /> Rail Road) and 21 (Crystal Creamery) (Figure 1). All of these sites have had previous soil and <br /> groundwater investigations conducted at them and three have active or planned remediation <br /> systems. <br /> The DHR owns Areas 10 and 20, and has access agreements (attached) from the owners of the <br /> other sites to conduct the proposed investigation. As we have previously discussed with you, <br /> these five adjacent parcels would be treated essentially as a single parcel for permitting reasons, <br /> in order to provide cohesive oversight for the proposed parcel-wide investigation and <br /> development. Attached are completed copies of the San Joaquin County and Master File Record <br /> (MFR) and Well Permit Application forms. <br /> SCOPE OF WORK <br /> Our proposed scope of work includes reviewing past site use, previous investigation and <br /> remedial work, and conducting soil and groundwater investigations at each area. The proposed <br /> soil and groundwater investigation is designed to supplement existing data and provide <br /> information to complete a Preliminary Endangerment Assessment(PEA) for each site. Figures 2 <br /> through 7 show the existing groundwater monitoring wells, and proposed soil borings for each <br /> area, and Table I summarizes the proposed sampling and analytical plan for each area. <br /> Sampling and Analyses <br /> Soil borings will be advanced using a Geoprobe direct push rig. Soil samples will be retained in <br /> stainless-steel tubes, covered with Teflon tape and capped. Groundwater samples will be <br /> collected in a pre-cleaned stainless, Teflon, or disposable polyethylene bailer, and decanted into <br /> Treadwell&Rollo,Inc.Environmental&Geotechnical Consultants <br /> 555 Montgomery Street,Suite 1300,San Francisco,CA 94111 <br /> Telephone(415)955-9040 Facsimile(415)955-9041 <br />