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California Regional Water Quality Control Board .: <br /> Central Valley Region <br /> Robert Schneider,Chair <br /> Winston H.Hickox Gray Davis <br /> Secretary for Fresno Branch Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/rwgcb5 <br /> Protection 3614 East Ashlan Avenue,Fresno,California 93726 <br /> Phone(559)445-5116•FAX(559)445-5910 <br /> 21 June 2002 <br /> Mr. W. Michael Carroll,PE <br /> County of San Joaquin <br /> Department of Public Works <br /> P.O. Box 1810 <br /> Stockton, CA 95201 <br /> NORTH COUNTYRECYCLING CENTER AND SANITARYLANDFILL, GROUNDWATER AND <br /> SURFACE WATER MONITORING FOURTH QUARTER &ANNUAL 2001 <br /> We have reviewed the North County Recycling Center and Sanitary Landfill, Fourth Quarter and <br /> Annual 2001, Groundwater and Surface Water Monitoring Report, dated 30 January 2002 and have <br /> found it incomplete. <br /> The results from the 4th quarter event showed several trace detections of various VOCs found in three <br /> wells. All VOCs detected, other than Freon 113 in Gl,were also found in one or more sample blanks. <br /> No resampling was performed. G-1 is the upgradient well. As stated in the Board's 3rd quarter <br /> inspection letter of 17 January 2002, one can conclude that sporadic detections of VOCs represent an <br /> early warning signal that groundwater is impacted. Freon is a common VOC that is the first constituent <br /> to show up in monitoring wells. Historically, this facility has shown numerous trace detections of VOCs <br /> in groundwater which have been found in blanks by the laboratory. We highly recommend that another <br /> laboratory be used with the next sampling event to double-check the quality control of the sampling and <br /> analysis procedures. <br /> Attached is a copy of the Monitoring Report Compliance Checklist that will be included in the case file <br /> for North County Sanitary Landfill. Please note the comments included at the end of the checklist. Your <br /> responses to the comments in this letter and in the checklist should be submitted by 1 September 2002. <br /> If you have any questions or comments, please call me at (916)255-3137. <br /> (�,Q4,1-ja- <br /> 91�11� <br /> KIM A. SCHWAB, RG <br /> Associate Engineering Geologist <br /> cc: Robert McClellon, San Joaquin County Environmental Health Division, Stockton <br /> Permitting and Enforcement Division, Solid Waste Landfill Unit, CIWMB, Sacramento <br /> kas:NC 4Qannual2001 ltr <br /> California Environmental Protection Agency <br /> Co Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/rwgcb5 <br />