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a <br /> STATE of CALIFORNIA-ENVIRONMENTAL PROT ��AGENCY PETE WILSON,Governor <br /> CALIFORNIA REGIONAL NATER QUALITY CONTROL BOARD— <br /> CENTRAL VALLEY REGION <br /> 3443 ROUTIER ROAD,SUITE A 9 <br /> SACRAMENTO,CA 95827-3098CC� \ Pm. <br /> PHONE: (916)255-3000 S '"P � 3 t a� 1® <br /> FAX: (916)255-3015 <br /> 31 August 1994 <br /> Mr. Gabriel Karam <br /> Solid Waste Division <br /> Department of Public Works <br /> County of San Joaquin <br /> P. O. Box 1810 <br /> Stockton, CA 95201 <br /> FOOTHILL LANDFILL, SAN JOAQUIN COUNTY (Case No. 1928) <br /> We have reviewed your 22 August 1994 letter and maps regarding the revised location of the new <br /> monitoring well at Foothill Landfill. We concur with the proposed location near the entrance gate. <br /> The well MW-3 should be installed prior to this year's rainy season. Please note the scale shown on <br /> the EMCON map submitted with your letter and found in other landfill reports appears to be incorrect <br /> when compared to your topographic map. <br /> After reviewing the landfill's monitoring system, we question whether existing monitoring well <br /> NIW-2 meets the standards in Article 5 of Chapter 15. Article 5 requires monitoring wells along the <br /> point of compliance, which is the downgradient edge of the waste management unit. MW-2 is nearly <br /> 500 feet from the unlined landfill. We recognize that the County has plans to construct lined landfill <br /> units at the facility in the future. However, those plans do not mitigate the need to provide adequate <br /> monitoring of the unlined landfill at this time. Therefore, we request that the County propose an <br /> additional monitoring well along the south side the unlined landfill at the point of compliance to <br /> augrnnt MW-2. Th �eshyuld be installed prior to <br /> iixz year rainy season. <br /> If you have any questions, please call Steve Rosenbaum at (916) 255-3131. <br /> WILLI MARSHALL, Chief <br /> Chapter 15 Unit <br /> SER <br /> cc: Mr. Scott Walker, Closure and Remediation Branch, California Integrated Waste Management <br /> Boa ' Sacramento <br /> d Padilla, San Joaquin County Environmental Health Division, Stockton <br />