Laserfiche WebLink
1.0 INTRODUCTION <br /> This Engineering Feasibility Study (EFS) has been prepared on behalf of the County of San <br /> Joaquin Department of Public Works (County) by Geo-Logic Associates (GLA) to evaluate <br /> alternative mitigation measures for recognized volatile organic compound (VOC) impacted <br /> groundwater in the shallow aquifer extending to the northwest of the Corral Hollow Sanitary <br /> Landfill (CHSL) in San Joaquin County, California (Figure 1). In addition, this document was <br /> prepared to comply with, Section 20420 of Title 27 of the California Code of Regulations and <br /> Regional Water Quality Control Board - Central Valley Region (RWQCB) Waste Discharge <br /> Requirements Order No. 5-01-176, and is intended to form the basis for a Corrective Action <br /> Program (CAP)that will be implemented at the site with approval from the RWQCB. <br /> 1.1 GENERAL <br /> This EFS incorporates hydrogeologic and hydrochemical data provided in previous <br /> groundwater monitoring reports for the CHSL including: <br /> ❑ Geo-Logic Associates, 2012, Evaluation Monitoring Program Report — Corral Hollow <br /> Sanitary Landfill, San Joaquin County, California, August 21. <br /> ❑ Shaw Environmental, 2012, First Semi-Annual (Winter/Spring) 2012 and Annual <br /> Summary Water Quality Monitoring Report — Corral Hollow Sanitary Landfill, prepared <br /> for the San Joaquin County Department of Public Works, March. <br /> The information provided in these previous reports and water quality monitoring data <br /> obtained most recently in 2012 were reviewed to present a more complete description of <br /> the site history, site setting, impacts to groundwater and its nature and extent. In addition, <br /> this information was used to assist in assessing viable alternatives to remediate water <br /> quality impacts from the CHSL. <br /> The EFS includes an evaluation of two in-situ, two source control, and two ex-situ corrective <br /> action options that have been identified as technically viable. The technical merits and <br /> limitations of each alternative are presented and evaluated for effectiveness, <br /> constructability, cost and serviceability as applied to the conditions as characterized within <br /> the areas of release at the CHSL. The ranking of alternatives is presented with the proposed <br /> most viable and recommended remedial alternatives to achieve the required cleanup goals. <br /> Engineering Feasibility Study Geo-I.Og�C Page ■ 1 <br /> Corral Hollow Sanitary Landfill ASSOCIATES <br /> January 25,2013 <br />