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California lbwional Water Quality Contrall Board <br /> 1 Central Valley Region = <br /> Karl E.Longley,ScD,P.E.,Chair <br /> Linda S.Adams Arnold <br /> Secretaryfor Sacramento Main Office Schwarzenegger <br /> Environmental 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 Governor <br /> Protection Phone(916)464-3291 •FAX(916)464-4645 o <br /> httpJHwww.waterboards.ca.gov/centraIva]ley <br /> 22 February 2007 <br /> W. Michael Carroll <br /> San Joaquin County Dept. of Public Works <br /> Solid Waste Division <br /> P.O. Box 1810 <br /> Stockton, CA 95201 <br /> REVIEW OF SECOND SEMESTER AND ANNUAL 2006 GROUNDWATER AND SURFACE <br /> WATER MONITORING REPORT, FOOTHILL SANITARY LANDFILL, SAN JOAQUIN <br /> COUNTY <br /> The Regional Water Quality Control Board (Regional Water Board) staff has reviewed the 2nd <br /> Semester and Annual 2006 Groundwater and Surface Water Monitoring Report for the Foothill <br /> Sanitary Landfill. The report was prepared in accordance with Monitoring and Reporting <br /> Program (MRP) No. R5-2003-0020. Staff finds the report complete and in compliance with the <br /> MRP. However, Volatile Organic Compounds (VOCs) continue to be detected in all soil gas <br /> wells surrounding Module I and Module 1, which is a violation of Waste Discharge <br /> Requirements No. R5-2003-0020, Prohibition A.2 and A.4. It is staff's understanding the <br /> newly constructed LFG system became operational during February 2007. Consistent <br /> operation of the system should capture and control migrating LFG. <br /> Please review the attached Monitoring and Reporting Checklist for additional comments. The <br /> final Construction Quality Assurance Certification Report for the Foothill Sanitary Landfill Site <br /> Improvement Project is due 24 February 2007. If you have any questions please call me at <br /> (916) 464-4737. <br /> Todd A. Del Frate <br /> Engineering Geologist <br /> Waste Discharge to Land Unit <br /> Lower San Joaquin River Watershed <br /> Enclosure(s) Monitoring and Reporting Checklist <br /> cc: Robert McClellon, San Joaquin County Environmental Health Department, Stockton <br /> Keith Kennedy, Permitting and Enforcement Division, CIWMB, Sacramento <br /> CIWQS VID#490701 <br /> California Environmental Protection Agency <br /> rZ�a Recycled Paper <br />