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II. Project Description <br /> Environmental Monitoring <br /> Environmental monitoring would be conducted to verify the landfills conformance status with <br /> respect to current regulations and permits. Monitoring would include groundwater,surface <br /> water,leak detection,landfill gas,hazardous waste and operations. <br /> [.rnendwater Monitoring. The landfill has had a groundwater monitoring program since <br /> December 16, 1977,when the RWQCB adopted Order No.77-288. There are 13 monitoring <br /> wells,MW 1 through MW13,two extraction wells,EWI and EW2,and two water supply wells, <br /> Water Supply Well(WSW)and West Water Supply Well SW)at the landfill. Ten of the <br /> monitoring wells are downgradient of the landfill(MW 1,MW4,MW6,and MW7 through 13) <br /> d three are located up fent 2,MW3,and 5). The landfill is currently under a <br /> Corrective Action Plan for groundwater contamination(volatile organic compounds). The <br /> existing monitoring program is further described in the Regional Water Quality Control Board <br /> (RWQCB)Order No.92-143 (RWQCB, 1992). <br /> The water supply well,WSW,has been decommissioned in compliance with Waste Discharge <br /> Requirements Order Number 90-122. <br /> Groundwater monitoring for the Austin Road Landfill Facility Expansion is required by and <br /> would be in accordance with Section 255(b)of California Code of Regulations,Title 23, <br /> Division 3,Chapter 15. The monitoring network would consist of background monitoring wells <br /> and down lent monitoring wells. The expanded landfill would require additional monitoring <br /> wells. Use of previously drilled background and monitoring wells would continue. Up to seven <br /> new monitoring wells would be added. The new wells would be installed prior to operation of <br /> Phase I of the expansion area. The new wells would be finished in the same aquifer currently <br /> monitored. The exact location of the wells would be done under the guidance of a <br /> hydrogeologist. <br /> A groundwater monitoring program has been submitted to the RWQCB to comply with revised <br /> Chapter 15,Article 5 regulations. <br /> [' rrective Action Plan. The City has implemented a Corrective Action Plan (CAP)dated <br /> August 1991,prepared by EMCON Associates CON)and approved by the RWQCB. The <br /> CAP includes the installation of an extraction and treatment system to mitigate groundwater <br /> impacts to address detected chlorinated hydrocarbon impacts in the first encountered <br /> 11.32 <br />