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April 8, 2014 <br />and migrate back to the groundwater aquifer from where it was extracted. <br />Secondly, the treated groundwater from the groundwater extraction <br />system is discharged into Littlejohns Creek currently, which both <br />recharges aquifers below and moves offsite. <br />Treated groundwater from the groundwater extraction system is proposed <br />to be infiltrated back to the aquifer through an infiltration basin (AEE, <br />2001 B, 2002a) located near well MW -11. The infiltration basin would <br />improve recharge to the local aquifer and is also designed to create a <br />hydraulic barrier to inhibit further northward migration of the groundwater <br />plume. The RWQCB letter to Forward dated March 11, 2002 agreed to <br />allow for their recharge remedy (Alternative 11) to go forward without <br />Alternative 3 (extended pumping) while quarterly monitoring at the <br />groundwater wells occurs. If the groundwater VOC concentrations do not <br />attenuate at a rate that is acceptable to the RWQCB then the Board will <br />require that Alternative 3, or some variant on Alternative 3, be <br />implemented. The recent (AEE, 2002a) addendum to the corrective action <br />proposed procedures to analyze the hydrochemical trends and trigger <br />concentrations at which additional extraction wells would be considered. <br />(Atkinson, 2002). <br />Current Status: Forward complies with the RWQCB groundwater <br />monitoring and corrective action requirements. <br />L 51 (F.9) <br />Identified in EIR: <br />Replacement wells (as well as additional wells north of the Austin Road <br />Landfill to better define the leading edge of the plume) shall be installed to <br />mitigate against the loss of old wells as presented in the JTD currently <br />under review by the RWQCB. The RWQCB must approve the JTD's <br />plans for the number and location of the new wells as part of their approval <br />process, which is separate from the EIR approval process. <br />Current Status: The RWQCB has approved Forward's JTD. Forward <br />complies with the RWQCB groundwater monitoring and corrective action <br />requirements. <br />J. 52 Austin 1994 (KU), Austin 2000 (K3.c) <br />The timing of the pumped discharge from the detention pond must not <br />occur with the peak flow rate of Little John's Creek as this would impact <br />downstream locations by increasing the flood- hazard. Telemetry, which <br />monitors the -flow in the _creek to determine the peak, should be provided. <br />Page 29 <br />