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Californi#egional Water Quality C000l Board <br /> \v- Central Valley Region <br /> Linda S.Adams Arnold <br /> Secremryfor Sacramento Main Office hwarzenegger <br /> Environmental 11020 Sun Center Drive k200.Rancho Cordova.California 954706114 � ��', 1� Govemor <br /> Protection <br /> Phone(916) 91 •FAX(916)464-4695 <br /> help://eM,w.+va1eraterboards.ca.gov/centralvalley S �V111 <br /> January 12, 2007 ENp �N}SSLHv10ES <br /> Mr. William Aravanis, PE, REA <br /> Geomatrix Consultants, Inc. <br /> 2444 Main Street, Suite 215 <br /> Fresno, CA 93721-2752 <br /> Mr. Anthony Daus, PG <br /> Geomatrix Consultants, Inc. <br /> 510 Superior Avenue, Suite 200 <br /> Newport Beach, CA 92663 <br /> REVIEW OF SOIL VAPOR SURVEY REPORT, LUSTRE-CAL NAMEPLATE <br /> CORPORATION, LODI, SAN JOAQUIN COUNTY <br /> Staff of the Central Valley Regional Water Quality Control Board (Regional Water Board) has <br /> reviewed the Soil Vapor Survey Report, Lustre-Cal Nameplate Corporation (the Site), Lodi, <br /> California. The WP is dated December,2006, and was received by the Regional Water Board <br /> on December 15, 2006. Geomatrix submitted this report on behalf of Lustre-Cal Nameplate <br /> Corporation, located at 110 E Turner Road in Lodi. <br /> The purpose of the report is to present the results of the field investigations conducted <br /> between October 16 and 20, 2006. Data collected at the Site in 1996 indicated that <br /> unsaturated zone soils between approximately 10 and 40 feet below ground surface (bgs) <br /> contained elevated concentrations of chlorinated VOCs. Therefore, the objective of the field <br /> investigations was to confirm and further define the lateral and vertical extent of volatile <br /> organic compounds (VOCs) detected in soil vapor at areas previously identified as source <br /> areas, and to provide sufficient data to design and install a soil vapor extraction (SVE) system <br /> for soil remediation, if a remedial measure is deemed necessary. In addition, the Regional <br /> Water Board requested that an attempt be made to collect deeper samples to the water table <br /> in each of the four potential source areas to evaluate the potential impact to groundwater from <br /> soil gas. <br /> At the six-foot sample depth, tetrachloroethene (PCE) was detected at levels greater than the <br /> January 2005 California Human Health Screening Level (CHSSL) for PCE in four soil vapor <br /> samples. One of those samples was located in the suspected source Area A, and the other <br /> three samples were located on the western side of the facility between Area A and Area B. <br /> The highest concentration of a chlorinated VOC detected at the six-foot level was 5,300 parts <br /> per billion by volume(ppbv) of 1,1,1-trichloroethane detected in SV-7 from Area B, the <br /> Concrete Tank Area. <br /> California Environmental Protection Agency <br /> C3 Recycled Paper <br />