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PpU1 <br /> COUNTY OF SAN JOAQUIN THOMAS R. FLINN <br /> uai Z< <br /> DEPARTMENT OF PUBLIC WORKS DEPUTY DIRECTOR <br /> P P.O. BOX 1810-1810 E.HAZELTON AVENUE <br /> C4C/FORA` STOCKTON,CALIFORNIA 95201 THOMAS M.GAU <br /> (209)468-3000 DEPUTY DIRECTOR <br /> MANUEL LOPEZ FAX(209)468-2999 <br /> DIRECTOR <br /> STEVEN WINKLER <br /> DEPUTY DIRECTOR <br /> October 16, 2000 <br /> Wendy Arano <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 3443 Routier Road <br /> Sacramento, California 95827 <br /> SUBJECT: FOOTHILL SANITARY LANDFILL GROUNDWATER MONITORING <br /> Dear Ms. Arano: <br /> Enclosed is a copy of the Third Quarter(2000)Monitoring Report for the Foothill Sanitary <br /> Landfill. Results from the Third Quarter show detections of Volatile Organic Compounds in the <br /> downgradient wells MW-2,MW-3. Since Acetone is a common laboratory solvent, a retest was <br /> not performed for this constituent. Removing this detection from the data leaves a single trace <br /> detection of Napthalene in MW-2, and this constituent was not retested because it is the only <br /> trace detection in this well. Trichloroethene and 1,1-Dichloroethene were detected in MW-3, and <br /> the County is currently working on putting together an Evaluation Monitoring Plan for this well. <br /> This report is submitted to comply with Waste Discharge Requirements Order No. 94-258. <br /> If you have any questions,please call me at (209) 468-3066. <br /> Sincerely, <br /> MICHAEL KALISH <br /> Associate Engineer <br /> MK:cg <br /> N:\Michael\FH\GWmon\3rd001et.wpd <br /> Enclosure <br /> c: Robert 1VMcClelion,Environmental Health Division,Public Health Services <br /> LA 64201 <br />