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California Regional Water Quality Control Board <br /> Central Valley Region <br /> Terry Tamminen Robert Schneider Chair <br /> Secretary for <br /> 0 <br /> Environmental Sacramento Main Office Arnold Schwarzenegger <br /> Protection Internet Address: http://Www.swrcb.ca.90v/rwgcb5 <br /> 11020 Sun Center Drive#200 Rancho Cordova,CA 95670-6114 Governor <br /> Phone(916)464-3291 <br /> 24 September 2004 <br /> REM, <br /> City of Stockton <br /> Department of Housing and Redevelopment SEP 2 7' 2004 <br /> c/o Kitty Walker ENVIR0NMNV7 hLAL01 <br /> 22 East Weber Avenue, Room 350 PERMIT/SERVICES <br /> Stockton, CA 95202-2317 <br /> REVIEW OFREVISED SITE INVESTIGATION WORKPLAN, STOCKTON <br /> LINCOLNAND MARKET STREETS, WORKNET, <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> Staff of the Central Valley Regional Water Quality Control Board reviewed the 15 September 2004 <br /> Revised Site Investigation Workplan (Revised Work Plan) submitted by Wallace-Kuhl &Associates, Inc. <br /> (WKA) on behalf of the City of Stockton Department of Housing and Redevelopment (RDA) for Parcel <br /> 3 of the South Shore Parcels in Stockton (site). On 5 August 2004, Regional Board staff received the <br /> 4 August 2004 Site Investigation Workplan (Work Plan), but it did not state who the report was <br /> submitted on behalf of and at that time, the RDA had not agreed to implement the work. Once the RDA <br /> had agreed to implement the work proposed by WKA, comments on the Work Plan were provided to <br /> Mr. Kurt Balasek and Mr. Matthew Taylor of WKA during an 18 August 2004 telephone conversation. <br /> RThe Department of Toxic Substances Control (DTSC) has also reviewed the Revised Work Plan. <br /> egional Board and DTSC staff have the following comments on the Revised Work Plan: <br /> 1• Page 3 of the Revised Work Plan states, "...the sample was analyzed using the TCLP method" but <br /> the following sentence identifies the concentration in milligrams per kilogram. Solubility test <br /> results should be provided in milligrams or micrograms per liter. <br /> 2Ih The first paragraph on Page 4 of the Revised Work Plan discusses that DTSC waived the <br /> requirements for a Preliminary Endangerment Assessment (PEA). It should be noted that DTSC <br /> waived the requirements based on the submittal of other documents that were equivalent to a <br /> PEA. <br /> 3• The RDA does not provide a description of where the excavated soil will be placed. The RDA <br /> needs to provide this description and based on previous DTSC correspondence, may not store the <br /> contaminated soil on Parcel 4. <br /> 4. The RDA proposes to collect a sample every 100 feet of exposed surface area. This needs to <br /> include every 100 feet vertically as well as laterally. Furthermore, the Revised Work Plan does <br /> California Environmental Protection Agency <br /> �d Recycled Paper <br />