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Draft Supplemental Environmental Impact Report Page III-32 Forward Inc.Landfill 2018 Expansion Project D-02,FU-03,FU-04,FU-05,and FU-06),as well as WMU-FU-17. A suction lysimeter is a device that measures the soil pore water in the unsaturated zone,while a pan lysimeter measures the water that percolates down from below the sump. The lysimeters are sampled and tested in accordance with the site's WDRs. The former Austin Road Landfill unit has no leachate collection system and therefore no lysimeters. Groundwater Monitoring The groundwater-monitoring system at the existing Forward Landfill is designed to detect the presence of contaminants in groundwater by analyzing groundwater chemistry at point-of-compliance wells. The monitoring system consists of 20 Detection Monitoring Program ' (DMP)wells and 40 Evaluation Monitoring Plan/Corrective Action Program(EMP/CAP) wells.The DMP wells are designed to detect a potential release from the landfill at point-of-compliance,while the EMP/CAP wells are used to evaluate changes in water quality and the effectiveness of the current corrective action measures. The 40 EMP/CAP wells were constructed as part of an on-going investigation. Figure IV.F-1 of the 2013 EIR shows the location of the monitoring wells. Groundwater monitoring is described in detail in the Hydrology and Water Quality Chapter of the 2013 EIR. After the 2013 EIR was prepared,Forward received approval from the Department of Toxic Substances Control and Regional Water Quality Control Board to install two replacement wells(MW-17R and-19R),which were installed in 2018. Approval is still pending to abandon the three existing wells(MW-17, 18,and 19),all located along the main access road in an area that has been permitted to allow construction of a new waste management unit. Groundwater Control Two groundwater extraction wells with a combined design capacity of 305 gallons per minute (gpm)were originally installed to extract polluted groundwater at the Austin Unit. Three additional two groundwater-extraction wells were installed in 2009,however one of the groundwater extraction wells was not sufficiently deep for sustained pumping and is not currently in use. In addition,eleven offsite EMP/CAP wells have been constructed in 2017/2018. VOCs are removed using granular activated carbon(GAC)from the extracted water and the treated water is ' discharged to a recharge basin north of the North Fork of South Littlejohns Creek,where it recharges the underlying aquifer. The groundwater treatment system and discharge are regulated by the RWQCB under WDRs. Air Quality Control ' Landfill Gas ' The current landfill gas control system consists of a series of collection wells interconnected by above-ground laterals and a main header pipe connected to a flare station and electric generation plant. Until 2012,there were two active landfill gas(LFG)collection and conveyance systems(GCCS)at the Forward Landfill. One system consisted of 18 vertical extraction wells with three horizontal