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WASTE)ISCHARGE REItIREMENTS ORDER NO. -25- FORWARD INC. AND ALLIED WASTE INDUSTRIES FOR OPERATION OF FORWARD CLASS II LANDFILL SAN JOAQUIN COUNTY Upon confirmation of a VOC release in landfill gas in a given area of the landfill, Gas extraction shall be implemented for that area. F. CORRECTIVE ACTION MONITORING 1. The Corrective Action Monitoring Program shall be used to assess the nature and extent of the release from the landfill and to evaluate the effectiveness of the corrective action program and the landfill cover. 2. In accordance with the Corrective Action Monitoring Program, the Discharger shall collect and analyze all data necessary to assess the effectiveness of the Corrective Action in reducing the impacts of the release on groundwater quality. A sufficient number of monitoring wells shall be installed to delineate the release. 3. The Discharger shall comply with the monitoring provisions for the Corrective Action Program (CAP) as described in Section 20430(4) of Title 27. The program shall include the detection monitoring program as well as an annual report evaluating the ground water and unsaturated data of the past year(s) in an effort to demonstrate the effectiveness of the CAP. 4. The discharger has proposed a system of specific threshold limits to evaluate the effectivness of the CAP (Evaluation Procedures for Proposed Corrective Action at Austin Road Landfill). The system uses both changes in VOC mass within the contaminant plume and changes in VOC concentrations at individual wells to evaluate remedial effectiveness. Upon determination that an exceedance for either the total mass or individual well threshold limit has occurred using the method and threshold limits described in Evaluation Procedures for Proposed Corrective Action at Austin Road Landfill, the discharger shall notify the RWQCB within 14 days and shall submit an evaluation of the CAP within 90 days. G. REPORTING REQUIREMENTS 1. In the event the Discharger does not comply or will be unable to comply with any prohibition or limitation of this Order for any reason, the Discharger shall notify the appropriate Board office by telephone as soon as it or its agents have knowledge of such noncompliance or potential for noncompliance, and shall confirm this notification in writing within two weeks. The written notification shall state the nature, time, and cause of noncompliance, and shall describe the measures being taken to prevent recurrences and shall include a timetable for corrective actions. 2. The Discharger shall retain records of all monitoring information, including all calibration and maintenance records, all original strip chart recordings of continuous