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Corrective Action Financial Assurance Estimate <br />Corral Hollow Sanitary Landfill <br />San Joaquin County <br />May 25, 2007 <br />INTRODUCTION <br />Purpose <br />Corrective action financial assurance for a "reasonably foreseeable release" from a <br />landfill is required under Sections 20380(b) and 22220-22222 of Title 27, California <br />Code of Regulations. In order to satisfy this corrective action financial assurance <br />requirement, the Discharger must estimate the cost of the corrective action taken to <br />mitigate a "reasonably foreseeable release". This report documents the rationale, <br />assumptions and results used in preparing the estimate. The approach used in developing <br />the estimate is summarized below. <br />Assess the physical layout, geology, containment systems, environmental <br />monitoring systems, and history of impacts to either groundwater or surface <br />water. <br />2. Develop a hypothetical release scenario based on the data collection in Item 1. <br />3. Develop an evaluation monitoring program to determine the lateral and vertical <br />extent of release from the landfill. <br />4. Developed a hypothetical corrective action response to mitigate the impacts <br />envisioned under the hypothetical release scenario. The extent and complexity of <br />the corrective action response is proportional to the environment threat of the <br />release and is consistent with the types and magnitude of corrective action <br />commonly mandated by the Regional Water Quality Board (RWQCB) at the time <br />this document was prepared. <br />5. Costs are estimated for implementation of the corrective action based on the <br />premise that the corrective action response will be designed and constructed by a <br />third party. Costs presented in the estimate are typical for engineering and <br />construction services rendered in the Northern Central Valley in 2006. <br />Site Description <br />The Corral Hollow Sanitary Landfill located at 31130 South Corral Hollow Road and is <br />owned by San Joaquin County. The landfill is located on a 58 -acre parcel of which <br />43 acres received refuse fill. The site consists of a single landfill containing four modules <br />Corrective Action Financial Assurance Cost Estimate 1 May 25, 2007 <br />Corral Hollow Sanitary Landfill San Joaquin County Public Works <br />