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7.2.2.2 PROPOSED GROUNDWATER MONITORING NETWORK <br /> Expansion of the existing Forward and Austin Road Landfills into a single landfill <br /> facility will necessitate changes to the current groundwater monitoring programs at <br /> these sites. The monitoring program changes will need to address the new <br /> configuration of the expanded site, post-closure monitoring at closed WMU-A at <br /> the existing Forward site, and the on-going corrective action program at the Austin _ <br /> Road facility. <br /> Table 17 lists the groundwater monitoring wells that have been constructed at the <br /> two landfill facilities and indicates how the wells are proposed to be integrated <br /> into a single groundwater monitoring well network for the planned expanded <br /> Forward Landfill. As depicted on Figure 7, the new monitoring well networks will <br /> include 45 wells; 12 for post-closure monitoring of WMU-A, 22 additional wells for <br /> the Detection Monitoring Program (DMP); and 11 wells to monitor the <br /> effectiveness of the Corrective Action Program (CAP) north>of the,,existing Austin <br /> Road parcel. <br /> Of the 45 wells, 9 wells have not yet beer,-constructed, but are proposed to meet <br /> DMP and CAP monitoring requirements. The locations of the proposed CAP <br /> wells were selected based on comments presented-by• <br /> .the RWQQ.Cl3.in their letter <br /> to Forward Inc., dated June 22, 2001. As requested by the RWQCB, the new CAP <br /> wells will be constructed to monitor both shallow and deep groundwater'zones. <br /> The locations for the proposed DMP wells were selected to provide additional <br /> spatial coverage for the new landfill expansion. The design for all new monitoring <br /> wells will be detailed in a work planihatvyifl,,be'imepafed,under,.the supervision of <br /> a certified (geologist or civil) engineer. Similarly,all well construction work will be <br /> performed under the direction of a certified (geologist or civil) engineer. <br /> As indicated in Table 17, several monitoring welts will also need to be abandoned <br /> to accommodate the expanding landfill footprint. Elimination <br /> however, should not affect the early detection capability of the DMP network. All <br /> well abandonment work will described first in a work plan that will be prepared <br /> under the supervision of certified (geologist or civil) engineer who will also direct <br /> all field activities. <br /> 7-5 <br /> Forward landfill)TD <br /> L:\Allied\2000.193\Reports\fi naljtd:Sec-7.0:08/20/01 BRYAN A.STIRRAT&.ASSOCIA <br />