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w ` THOMAS M. GAU P. O. BOX 1810 -1810 E. HAZELTON AVENUE DIRECTOR STOCKTON, CALIFORNIA 96201 (209) 468-3000 FAX (209) 468-2999 www.sjgov.org/pubworks FRITZ BUCHMAN DEPUTY DIRECTOR Waflft for YOU U MICHAEL SELLING DEPUTY DIRECTOR JIM STONE ISI DEPUTY DIRECTOR IV m r p ROGERJANES BUSINESS ADMINISTRATOR January 23, 2012''1 0Z L 9 NVf Mr. Todd Del Frate California Regional Water Quality Control Board Centrat Valley Region 11020 Sun Center Drive, #200 Rancho Cordova, California 95670 SUBJECT: SECOND SEMESTER AND ANNUAL SUMMARY 2013 GROUNDWATER REPORT; NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL Dear Mr. Del Frate: - Please find enclosed the Second Semester and Annual 2013 Groundwater and Surface Water Monitoring Report for the North County Recycling Center and Sanitary Landfill. Following is information required by our Waste Discharge Requirements (WDR) Section H7: a) This report presents data from July through December 2013. Groundwater monitoring continues on a semi-annual basis in accordance with our WDRs. Also, the last monitoring report was submitted in July 2013, presenting data from January through June 2013. b) There were no WDR violations during this reporting period. Conditions of the groundwater are unremarkable, and consistent with previous quarters. Groundwater contamination by the landfill is not indicated. Concentration limits were not exceeded at any well except for turbidity in newly -installed well G -5A. c) With the exception of false positives and similar sporadically reported compounds from lab or other contamination, VOC impact has not been indicated at well G-4 (the "impacted" well) since January 2003, ten years ago. All other groundwater wells continue to be free of VOCs since monitoring began. Because this landfill is in full compliance with the WDRs, no corrective action is contemplated at this time. Full groundwater monitoring continues on a semi-annual basis (first and third quarters) in accordance with our Waste Discharge Requirements. Supplemental VOC analysis of groundwater continues on a semi-annual basis (second and third quarters) in accordance with the revised Report of Waste Discharge. VOCs, usually in low concentrations, were found in most soil gas wells, which is not a violation of California regulations. The continuing presence of VOCs in the soil gas within our property and the continuing lack of VOCs in groundwater at any well seem to indicate that the presence of VOCs in the soil at these concentrations is a benign condition that does not threaten the groundwater at this site.