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California Regional Water Quality Control Board ` <br /> Central Valley Region <br /> Robert Schneider,Chair <br /> Alan C.Lloyd Ph.D. Arnold Schwarzenegger <br /> Secretary for Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.waterboards.ca.gov/centralvalley <br /> Protection 11020 Sun Center Drive#200 Rancho Cordova,CA 95670-6114 <br /> Phone(916)464-3291 Fax(916)464-4797 <br /> 3 May 2005 (o�E((�@��@ D <br /> Mr. Peter Wallace <br /> Former Hess DuBois Cleaners ENVIRONMENI HEALTH <br /> 7455 Pasaro Drive PERMIT/SERVICES <br /> Scottsdale, AZ 85262 <br /> REQUEST FOR SITE ASSESSMENT INVESTIGATION REPORT, FORMER HESS <br /> DUBOIS CLEANERS, 348 WEST HARDING WAY, STOCKTON, SAN JOAQUIN <br /> COUNTY <br /> On 8 April 2003, staff of the Central Valley Regional Water Quality Control Board (Regional <br /> Board) sent you a letter concurring with the 21 March 2003 Additional Site Assessment Work <br /> Plan (Work Plan) submitted by Advanced GeoEnvironmental, Inc. (AGE) on your behalf for the <br /> Former Hess DuBois Cleaners at 348 West Harding Way in Stockton (site). The Work Plan <br /> proposed installing four multi-level wells for groundwater sampling and 15 soil borings for soil <br /> gas sampling to delineate the extent of Stoddard solvent and tetrachloroethene (PCE) and its <br /> breakdown products. On 5 May 2005, Regional Board staff received a figure illustrating the <br /> construction of the multi-level well as requested. Since that time, Regional Board staff has <br /> remained in contact with your consultant, Mr. Robert Marty of AGE, asking the status of the <br /> State Water Resources Control Board Cleanup Fund appeal and if there are insurance records <br /> during the time of the operation when PCE was used. During this time, the work proposed in the <br /> Work Plan has not been completed and no insurance information has been provided. <br /> The extent of the PCE and breakdown products pollution in groundwater is not delineated and <br /> the migration of plume is in the direction of a school. Based on this, the Work Plan must be <br /> implemented. By 31 May 2005,please provide a letter stating your intentions to investigate and <br /> cleanup the PCE and its breakdown products and Stoddard solvent pollution originating from the <br /> site. By 30 September 2005, submit an investigation report detailing the well installation <br /> activities and groundwater and soil gas sampling results. If you have any questions, you may <br /> contact me at (916) 464-4719 or dlewis@waterboards.ca.gov. <br /> DEVRA LEWIS <br /> Environmental Scientist <br /> cc: Mr. James Barton, UST Unit, Regional Water Quality Control Board, Sacramento <br /> Mr. Mike Infurna, San Joaquin County Environmental Health Department, Stockton <br /> Mr. Robert Marty, Advanced GeoEnvironmental, Inc., Stockton <br /> California Environmental Protection Agency <br /> (a Recycled Paper <br />