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Californi gional Water Quality Co&I Board <br /> Central Valley Region <br /> Karl E.Longley,ScD,P.E.,Chair (0 <br /> Linda S.Adams Sacramento Main Office Arnold <br /> EnviroSecretn enteryfor 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 Schwovernegger <br /> Environmental Governor <br /> Protection Phone(916)464-3291 •FAX(916)4644645 <br /> http://www.watcrboards.ca.gov/centralval ley <br /> 10 May 2007 <br /> 07 <br /> Mr. Kevin Basso <br /> General Manager <br /> Forward Inc. <br /> 1145 West Charger Way <br /> Stockton, CA 95206 <br /> GROUNDWATER INVESTIGATION ACTIVITIES REPORT, FORWARD LANDFILL — <br /> AUSTIN ROAD UNIT, SAN JOAQUIN COUNTY <br /> Regional Water Quality Control Board staff has reviewed the Groundwater Investigation <br /> Activities Report(Report) submitted on 30 April 2007. The report discusses the partial <br /> completion of the investigation described in the Work Plan for Proposed Groundwater <br /> Investigation Activities (Work Plan). This Work Plan describes the groundwater investigation <br /> for the apparent VOC contamination in groundwater at the Northern California Youth Center <br /> (NCYC). The report discusses the first four of six investigation tasks in the Work Plan: 1. <br /> condition and operation of the NCYC production wells; 2. sampling protocols; 3. collect <br /> samples; and 4. submit samples for analysis from the NCYC three operational wells and from <br /> the facility water system (faucet). The investigation to date confirms the presence of VOCs in <br /> the three NCYC operational water supply wells and in the NCYC water system. The principal <br /> VOCs detected are tetrachloroethene (up to 17 ppb) and trichloroethene (up to 4.4 ppb). <br /> Sections not included in the Report as described in the Work Plan are an evaluation of the <br /> results in light of nature of VOC constituents released by Austin Road unit (investigation task <br /> 5); and recommendations for additional investigations if necessary (investigation task 6). <br /> Please submit an evaluation comparing results from the NCYC wells with the Austin Road <br /> groundwater contamination and a proposal for additional investigation by 8 June 2007. The <br /> proposal for additional investigation should include a schedule for completion, and should <br /> focus first on confirming the source of contamination. If the Austin Road unit is determined to <br /> be the source, then the investigation should become an engineered feasibility study to revise <br /> the corrective action to include the plume on NCYC property. <br /> Staff has reviewed Forward's 17 April 2007 letter offering to install and maintain a water <br /> treatment system at the NCYC. We understand that this offer is not an admission that the <br /> Austin Road unit is the source of the VOCs. Staff would like to thank Forward Inc. for acting <br /> proactively to supply clean water for the NCYC. <br /> California Environmental Protection Agency <br /> ea Recycled Paper <br />