Laserfiche WebLink
aP4ury,.c <br /> •�•.oma <br /> r. <br /> '•z <br /> THOMAS M.GAU � $�c.Uy1 <br /> "- P.O.BOX 1810-1810 E.HAZELTON AVENUE <br /> DIRECTOR STOCKTON,CALIFORNIA 95201 <br /> (209)468-3000 FAX(209)468-2999 <br /> www.sjgov.org/pubworks <br /> MICHAEL SELLING ` <br /> DEPUTY DIRECTOR <br /> STEVEN WINKLER <br /> DEPUTY DIRECTOR <br /> ROGERJANES <br /> BUSINESS ADMINISTRATOR <br /> July 26, 2012 <br /> Mr. Todd Del Frate <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 11020 Sun Center Drive, #200 <br /> Rancho Cordova, California 95670 <br /> SUBJECT: FIRST SEMESTER 2012 GROUNDWATER MONITORING REPORT; <br /> NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL <br /> Dear Mr. Del Frate: <br /> Please find enclosed the First Semester 2012 Groundwater and Surface Water Monitoring Report for the <br /> North County Recycling Center and Sanitary Landfill. <br /> I am pleased to report that groundwater contamination by the landfill is not indicated. Conditions of the <br /> groundwater are unremarkable, and consistent with previous quarters. <br /> With the exception of false positives and similar sporadically reported compounds from lab or other <br /> contamination, VOC impact has not been indicated at well G-4 (the "impacted"well) since January 2003, <br /> over nine years ago. VOC impact has not been indicated at any other well at Pny time. <br /> Recently-reinstalled groundwater well G-1 continues to be free of impact, confirming our earlier <br /> conclusion that detections immediately after installation were due to compounds introduced during the <br /> construction of this well. <br /> The continuing presence of VOCs in the soil gas within our property and the continuing lack of VOCs to <br /> groundwater at any well seem to indicate that the presence of VOCs in the soil at these concentrations at <br /> this landfill does not threaten the groundwater. <br /> Full groundwater monitoring continues on a semi-annual basis (first and third quarters) in accordance <br /> with our Waste Discharge Requirements. Supplemental VOC analysis of groundwater also continues on <br /> a semi-annual basis (second and third quarters) in accordance with the revised Report of Waste <br /> Discharge. <br /> Secondary leachate sumps at Module 3 and 4 remain free of leachate. Module 1 is not provided with a <br /> secondary leachate sump. <br /> Analysis of a storm water discharge sample is included. <br />