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r <br /> QU1N <br /> a°P9� C®u(v N .�OAQj.J IN THOMAS R.FLINN <br /> DEPUTY DIRECTOR <br /> Q�. t .�� DEPARTMENT OF PUBLIC WORKS MANUEL LOPEZ <br /> to DEPUTY DIRECTOR <br /> P.O.BOX 1810—1810 E.HAZELTON AVENUE <br /> :', _ • STOCKTON.CALIFORNIA 95201 )�i e q g STEVEN 1/VINKLER <br /> i° <br /> P <br /> (209)468-3000 DEPUTY DIRECTOR <br /> O� f F O Rte` FAX(209)468-2999 <br /> HENRY M.HIRATA <br /> DIRECTOR <br /> July 12, 1999 <br /> Wendy Arano <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 3443 Routier Road <br /> Sacramento, California 95827 <br /> SUBJECT: HARNEY LANE SANITARY LANDFILL GROUNDWATER MONITORING <br /> Dear Ms. Arano: <br /> Enclosed is a copy of the Second Quarter(1999)Monitoring Report for the Harney Lane Sanitary <br /> Landfill. Results from the second quarter(1999) show two Volatile Organic Compound (VOC) <br /> detections in MW-2 (dichlorodifluoromethane, tetrachloroethylene). Trend analysis showed no <br /> evidence of a trend in the data. There were also two VOCs that were detected in the up gradient <br /> well MW-l. The County believes these to be due to landfill gas influence. Recent repairs and <br /> improvements to the gas system should allow more efficient collection of landfill gas near MW-1. <br /> An increasing trend was indicated for Chloride in MW-2. Therefore, an intrawell tolerance limit was <br /> not updated for Chloride in MW-2. All other constituents were within limits. Our sampling <br /> consultant did not include well recovery times on field data sheets. They have, again, been notified <br /> and will include recovery times in future reports. <br /> This report was prepared to comply with current Waste Discharge Requirements Order No. 96-139. <br /> If you have any questions, please call me at (209)468-3066. <br /> �Sincerely, <br /> U� <br /> .y- <br /> WE JOHNSON <br /> Associate Civil Engineer <br /> WJ:MK:rh <br /> S.\W ES\HL\G W MON\2-991et <br /> Enclosure <br /> c: Robert McClellon, R.E.H.S., Public Health Services, Environmental Health Division <br /> LA 64201 <br />