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k iX <br /> Ripon Farm Service Incorporated Page 2 <br /> 932 South #ighway 99 June 20, 2008 <br /> Ripon, California 95366 <br /> The Centra Valley Regional Water Quality Control Board (CVRWQCB) is requiring <br /> evaluation of Environmental Screening Levels (ESLs), Cal'Xifornia Human Health Screening <br /> Levels (CHHSLs), (San Francisco Bay Regional Water Quality Control Board) and the <br /> ,r. <br /> potential for vapor intrusion into buildings for closure consideration of sites having residual <br /> contaminati n left in place. Therefore, you are directed to evaluate the potential for vapor <br /> intrusion in the buildings located onsite. Please submit a work plan to EHD by August <br /> 29, 2008, tb assess the potential for vapor intrusion into'the existing onsite buildings, or <br /> provide a rational, with technical support, for discounting vapor intrusion into the.buildings <br /> as a potenti�l hazard for this site. <br /> Please contact Vicki McCartney, Senior Registered Environmental Health Specialist, at <br /> (209) 468- 852 or by email at viiccrirti�e4(i.�: cehcl.ccnn if you have any questions, <br /> Sincerely, <br /> Victoria L. cCartney, REHS ;; Nuel C. Henderson, Jr., PG <br /> Senior Registered Environmental Healt Specialist Engineering Geologist <br /> k <br /> c: Mr. Wi liam R. Little, Advanced GeoEnvironmental, 'Inc., 837 Shaw Road, Stockton, <br /> Califorinia 95215 <br /> Mr. James L.L. Barton, PG, California Regional Water Quality Control Board Central <br /> r Valley egion, 11020 Sun Center Drive, Suite 200, Rancho Cordova, California 95670 <br /> is <br /> :I <br /> j $ <br /> r <br /> a� <br /> r ' <br /> 1 <br /> I ` <br /> . F <br /> w � <br />