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ARCAD ISb <br /> fornaturatand <br /> built assets <br /> • <br /> Mr. Brendan Kenny Arcadis U.S.,Inc. <br /> Engineering Geologist 735 Tank Farm Road <br /> Compliance and Enforcement Section Suite 150 <br /> Central Valley Regional Water Quality Control Board San Luis Obispo <br /> 11020 Sun Center Drive#200 California 93401 <br /> Rancho Cordova, California 95670 Tel 805 242 0175 <br /> Fax 805 782 9273 <br /> www.arcadis.com <br /> ENVIRONMENT <br /> Subject: <br /> Work Plan for Groundwater Treatment System Upgrades to the Point of <br /> Compliance at the Forward Landfill, 9999 S. Austin Road, Manteca, California. <br /> Date: <br /> July 03, 2019 <br /> Dear Mr. Kenny: <br /> Contact: <br /> On behalf of Forward Inc., Arcadis U.S., Inc. (Arcadis)has prepared this Work Aaron Hook <br /> • Plan for proposed upgrades to the point of compliance(POC)groundwater <br /> treatment system (GWTS)at the Forward Landfill, 9999 S. Austin Road, Phone: <br /> Manteca, California(Site). The GWTS upgrades will include the installation of an 805 242 0159 <br /> additional extraction well, additional conveyance piping capacity and hydraulic <br /> Email: <br /> testing for pump sizing. The POC and the proposed well is presented on <br /> aaron.hook@arcadis.com <br /> Figure 1. <br /> Our ref: <br /> BACKGROUND SM010309.0016 <br /> Extensive hydraulic testing was conducted in the western portion of the POC <br /> during March 2019(well EW-3R)and additional well-specific testing was <br /> conducted in May 2019 on extraction wells EW-1, EW-2 and EW-4.The testing <br /> was conducted to assess the hydraulic characteristics of the alluvial aquifer in the <br /> western portion of the POC, determine the optimal extraction capacities of <br /> existing extraction wells EW-1, EW-2, EW-3R and EW-4, assess water quality <br /> and POC groundwater capture. <br /> The results for the aquifer and well specific hydraulic assessment on extraction <br /> well EW-3R were presented in a report entitled Well Installation and Hydraulic <br /> Testing Summary Report for Forward Landfill(Arcadis, 20191)and subsequent <br /> hydraulic testing results for well specific step tests conducted for extraction wells <br /> EW-1, EW-2 and EW-4 are summarized and presented in Attachment 1. <br /> • 1 Arcadis 2019,Well Installation and Hydraulic Testing Summary Report for Forward Landfill, San Joaquin <br /> County, California, dated April 15 <br /> Page: <br /> 117 <br />