Laserfiche WebLink
-lo Board <br /> California Regional Water QualityT <br /> Central Valley Region A <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/rwqcb5 <br /> Protection <br /> 3614 East Ashlan Avenue,Fresno,California 93726 <br /> Phone(559)445-5116-FAX(559)445-5910 <br /> 17 January 2002 A N 18 2002 <br /> ENVIRONMENT HEALTH <br /> Mr. W. Michael Carroll, PE PERMIT/SERVICES <br /> County of San Joaquin <br /> Department of Public Works <br /> P.O. Box 1810 <br /> Stockton, CA 95201 <br /> NORTH CO UNTY RE C YCLING CENTER AND SANITAR Y LANDFILL, GR 0 UND WA TER AND <br /> S URFA CE WATER MONITORING THIRD Q UAR TER 2001 <br /> We have reviewed the North County Recycling Center and Sanitary Landfill, Third Quarter 2001, <br /> Groundwater and Surface Water Monitoring Report, dated 15 October 2001. <br /> In accordance with Waste Discharge Requirements Order No. 95-068, the County resampled G-5 due to <br /> methyl tert-butyl ether and toluene detected during the third quarter monitoring. This retest detected <br /> toluene in a trace amount. The County states that various volatile organic compounds (VOCs) are <br /> sporadically detected at this and other groundwater monitoring wells at the North County Landfill due to <br /> laboratory cross-contamination and the low detection limits of the analysis. The County proposes to pay <br /> special attention to future data from this well, and will take appropriate action if future monitoring data <br /> indicates a release. <br /> One can also conclude that sporadic detections of VOCs may also be an early warning that groundwater <br /> is truly impacted. Quarterly sampling monitors trace amounts during a one day sampling event, which <br /> theoretically represents water quality for a three month period. We recommend that the laboratory be <br /> notified of this occurrence and be requested to be diligent in their quality control. <br /> I have attached a copy of the Monitoring Report Compliance Checklist that will be included in the case <br /> file for North County Sanitary Landfill. Please note the comments included at the end of the checklist. <br /> Your responses to the comments in this letter and in the checklist should be submitted by 15 February <br /> 2002. <br /> If you have any questions or comments,please call me at (916) 255-3137. <br /> KIM A. SCHWAB, RG <br /> Associate Engineering Geologist <br /> cc: Robert McClellon, RENS, Public Health Services, Environmental Health Division <br /> kas:NC 3Q 2002 Itr <br /> California Environmental Protection Agency <br /> 01 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/rwqcb5 <br />