Laserfiche WebLink
N <br /> EDMUND G. BROWN JR. <br /> .,m GOVERNOR <br /> e <br /> C A61 F C W M I A MATTHEW ROORIOUEZ <br /> Water ®ands SECRETARY FOR <br /> ENVIRONMENTAL PROTECTION <br /> Central Valley Regional Water Quality Control Board <br /> RECEIVED <br /> 1 August 2014 <br /> AUG 06 ZJ ,, <br /> Mr. Taj M. Bahadori, PE ENVIRONMENTAL HEALTH <br /> Senior Civil Engineer PERMIT/SFPvjrES <br /> San Joaquin County Public Works, Solid Waste Division <br /> 1810 E. Hazelton Avenue <br /> Stockton, CA 95201 <br /> NOTICE OF VIOLATION: REVIEW OF THE SECOND SEMESTER AND ANNUAL 2013 <br /> GROUNDWATER AND SURFACE WATER MONITORING REPORT FOR FOOTHILL <br /> SANITARY LANDFILL, SAN JOAQUIN COUNTY <br /> The Foothill Sanitary Landfill is owned by San Joaquin County and operated by Foothill Sanitary <br /> Landfill , Inc. The Foothill Sanitary Landfill is regulated by Waste Discharge Requirements <br /> (WDRs) Order R5-2003-0020. Central Valley Water Board staff has reviewed the Second <br /> Semester and Annual 2013 Groundwater and Surface Water Monitoring Report for the Foothill <br /> Sanitary Landfill and have noted below violations of the WDRs and staff concerns. <br /> Groundwater Violations <br /> Volatile organic compounds (VOCs) have been detected in well MW-3 in the last five of seven <br /> monitoring events. Staff considers these detections in groundwater a release from the waste <br /> management unit(s) (WMUs) and is a violation of the WDRs Prohibition A.2, A.4, and A.7. <br /> Groundwater flows south-southeast beneath the unlined Module I and swings abruptly <br /> south-southwest toward well MVII The Discharger is making plans to expand the landfill area <br /> south into Module 2. Currently no compliance points for either soil gas or groundwater are <br /> located south-southeast of the downgradient edge of Module 1 or future Module 2. As such, the <br /> Detection Monitoring Program at the Foothill Sanitary Landfill does not meet the intent of Title <br /> 27, Section 20415(b)(1)(B)l, which states: fora detection monitoring program under(20420): a <br /> sufficient number of Monitoring Points (as defined in Section 20164) installed at appropriate <br /> locations and depths to yield ground water samples from the uppermost aquifer that represent <br /> the quality of groundwater water passing the Point of Compliance and to allow for the detection <br /> of a release from the Unit. <br /> Unsaturated Zone Violations <br /> Soil gas probes SG-1 through SG-11 were installed during 2003 and are considered an <br /> alternate boundary gas monitoring network installed as part of an Evaluation Monitoring <br /> Program conducted during 2003. All alternate perimeter soil gas probes (SG-1 through SG-11) <br /> monitored during the second semester 2013 have reported VOCs in gas samples analyzed. <br /> Historically, VOCs have been reported in these probes. These detections indicate a release <br /> from the WMU and are a violation of WDRs.Prohibitions A.2, A.4, and A.7. <br /> CIWQS VID#972425 <br /> KARL E. LONGLEY SCD, P.E., CHAIR 1 PAMELA C. CREEDON P.E., SCEE, EXECUTIVE OFFICER <br /> 11020 Sun Center Drive#200,Rancho Cordova,CA 95670 1 www.waterboards.ca.gov/centralvalley <br /> `?RECYCLED PAPER <br />