Laserfiche WebLink
ENGINEERING FEASIBILITY REPORT <br /> Presenting the Results of the <br /> EVALUATION MONITORING PROGRAM <br /> FOOTHILL SANITARY LANDFILL <br /> PURPOSE <br /> This report presents the results of Evaluation Monitoring at the Foothill Sanitary Landfill in <br /> response to a release indicated at groundwater monitoring well MW-3 in 2000 and 2001. The <br /> objective of the Evaluation Monitoring was to delineate the suspected release, if any. <br /> This work was in accordance with the Evaluation Motoring Plan(EMP) submitted to the Central <br /> Valley Regional Water Quality Control Board on October 21, 2002, compliant with Title 27, <br /> California Code of Regulations(CCR) Section§20420(k)(5). <br /> RESULTS <br /> Water samples from all exploratory boring locations were found free of contamination. These <br /> data are consistent with data from MW-3 collected since January 2002, indicating that the <br /> groundwater is not impacted by the presence of the Foothill Landfill at this time(Appendix A). <br /> BACKGROUND <br /> The Foothill Sanitary Landfill is comprised of an unlined Module of approximately 83 acres <br /> (Module'7), and a new, lined Module now under construction(Module 1). Other pertinent <br /> aspects of this site are: <br /> Groundwater elevation: Approximately 50 feet MSL <br /> Depth to groundwater: Approximately 250 feet <br /> Soils Characteristics: The site materials from the surface to 300 feet in the <br /> landfill vicinity consolidated gravels, sandstones, siltstones <br /> and siltstone, claystone and mudstone. <br /> MW-3 is one of two down-gradient wells monitoring for impact to groundwater by the Foothill <br /> Landfill. <br /> The EMP was submitted due to the indicated presence of a few volatile organic compounds <br /> (VOCs) at groundwater monitoring well MW-3 (Figure 1). These detections were reported from <br /> ' March 2000 to October 2001. <br /> Other than suspected "false positive"results due to contamination of water samples after <br /> collection,VOCs have not been detected in this well or at any well at the Foothill Landfill since <br /> October 2001. <br /> Engineering Feasibility Report Foothill Sanitary Landfill <br /> October 1,2003 San Joaquin County Solid Waste <br />