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California Regional Water Quality Control Board . ....: : <br /> Central Valley Region _ <br /> L : <br /> Robert Schneider Chair I ���f <br /> u V�Id Schwarzenegger <br /> Alan C.Lloyd Ph.D. Sacramento Main Office d/I Governor <br /> Secretary for Intemet Address: http://www.watabouds.ca.gcv/cmtralvafey AUC7 1 9 9 <br /> Environmental 11020 Sun Center Drive#200 Rancho Cordova,CA 95670-61 1- <005 <br /> Protection Phone(916)464-3291 Fax:(916)464-0797 tt�/VV IRON <br /> PERMIT SE RVHEEST11 <br /> 17 August 2005 <br /> Mr. Thomas Bauhs Ms. Kitty Walker <br /> Chevron Environmental Management Company Stockton Department of Housing&Redevelopment <br /> P.O. Box 6012 305 North El Dorado Street, Suite 200 <br /> San Ramon, CA 94583-0904 Stockton, CA 95202. <br /> SOIL VAPOR EXTRACTION SYSTEM STARTUP, SOUTH SHORE PARCEL 2A, <br /> 666 WEST WEBER AVENUE, STOCKTON, SAN JOAQUIN COUNTY <br /> The L&M Operable Unit Group is conducting cleanup at the L&M Operable Unit(L&M OU) site at <br /> 666 West Weber Avenue in Stockton on behalf of itself and all the other responsible parties for the <br /> contamination at this site. The L&M OU is a portion of Area 2A belonging to the City of Stockton <br /> Redevelopment Agency(RDA) as identified within the City's 13 September 2000 Environmental Master <br /> Plan. <br /> A 11 July 2005 letter from Central Valley Regional Water Quality Control Board (Regional Board) staff <br /> stated, "... it is imperative that L&M OU starts the Soil Vapor Extraction System (SVE) as an interim <br /> measure in order to accomplish some pollutant source removal. Therefore, L&M OU must expedite its <br /> work with HERD [Department of Toxic Substances Control Human and Ecological Division) so that <br /> EarthTech may collect soil vapor samples and complete the necessary analyses in a reasonable time <br /> frame. L&M OU must not conduct the start-up and shake-down of the SVE until it obtains further <br /> written approval from Regional Board staff" The analytical results of the soil vapor samples collected <br /> for the human health risk assessment(HHRH)was sent as an electronic attachment to an 8 August <br /> e-mail form Mr. Ray Kaminsky of EarthTech, addressed to myself and the project managers for the <br /> HHRA at the DTSC. In addition, analytical results for the baseline sampling for the startup of the SVE <br /> were submitted in all 16 August e-mail from Mr. Dan Schreiner of SECOR International Corporation. <br /> Thus,the conditions to startup the soil vapor extraction system have been met and the L&M Operable <br /> Unit Group may proceed with SVE startup and shake down as it outlined previously. <br /> By 26 August 2005,please provide a comprehensive schedule for SVE startup, including sampling <br /> activities and a submittal date of a startup results report. If you have any questions regarding this letter <br /> or need additional information, you may contact me at(916) 464-4682 or by email at <br /> mserra(a)waterboards.ca.gov. <br /> RY ERRA <br /> Private Sites Cleanup Unit <br /> See next page for cc list <br /> California Environmental Protection Agency <br /> Ca Recycled Paper <br />