Laserfiche WebLink
2.2 GROUNDWATER <br /> 2.2.1 GROUNDWATER MONITORING WELLS <br /> The groundwater monitoring network at the Forward Landfill has been designed to <br /> provide early detection of a release from wastes to groundwater. The monitoring <br /> systems installed were designed and certified by a registered (geologist or civil) <br /> engineer. The boring logs were prepared under the direction of a registered <br /> (geologist or civil) engineer and have been submitted to the RWQCB. <br /> As shown on Table 1 and depicted on Figure 4, the monitoring well network <br /> includes 40 wells; 12 for post-closure monitoring of WMU-A, 27 additional wells <br /> for 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 40 wells, 5 wells have not yet been 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 the RWQCB in their letter <br /> to Forward Landfill Inc., dated June 22, 2001. As requested by the RWQCB, the <br /> new CAP wells will be constructed to monitor both shallow and deep <br /> groundwater zones. The locations for the proposed DMP wells were selected to <br /> provide additional spatial coverage for the new landfill expansion. The design for <br /> all new monitoring wells will be detailed in a work plan that will be prepared under <br /> the supervision of a certified (geologist or civil) engineer. Similarly, all well <br /> construction work will be performed under the direction of a certified (geologist or <br /> civil) engineer. Table 1 lists the monitoring parameters <br /> 2.2.2 GROUNDWATER CONTROL <br /> Two groundwater extraction wells (EW-1 and EW-2) with a combined design <br /> capacity of 305 gallons per minute (gpm) were installed to extract impacted <br /> groundwater at the existing Austin Road Landfill (see Figure 4). VOCs are stripped <br /> from the extracted water at the facility's groundwater treatment plant, and the <br /> treated water is currently discharged to the North Branch. The groundwater <br /> treatment system and discharge are regulated under the Waste Discharge <br /> Requirements (WDR) Order No. R5-2003-0049. <br /> Forward Landfill PFCPCMP 2-2 <br /> ):\Allied\Forward\2005.0051 Partial Closure\Partial Closure Plan\FL-sec2.doc:6/9/2005 <br />