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Enclosure 3. <br /> Forward Landfill Project Progress Milestones RCADIS <br /> Forward Landfill, Manteca, California <br /> Nw— <br /> Project Milestone ad Reason Work Conducted <br /> The original 123 acre Austin Road Unit was filled by the City of Stockton using a <br /> Initial Detection of Impacted Groundwater at the Landfill 1989 trench method that involved the use of unlined waste units, unlike modern landfills <br /> that have leachate collection systems. <br /> Forward Inc. Purchases the Former Austin Road Landfill from the City of Stockton 2000 - <br /> Forward has been addressing groundwater quality impacts associated with the City <br /> of Stockton's unlined landfill since Forward purchased the former Austin Road <br /> Identification of the Primary Source of Groundwater Impacts Due to Landfill Gas 2001 Landfill from the City in 2000. In 2001 Forward submitted an Engineering Feasibility <br /> Study to the RWQCB that identified the primary source of groundwater impacts to <br /> be landfill gas. <br /> A total of 182 new vertical gas extraction wells and nine replacement wells were <br /> Landfill Gas Collection System Enhancements and Flare Station Upgrades 2001 to 2013 installed to prevent gas impacting groundwater. Also, combination of landfill gas <br /> collection and conveyance system from two into one system with connection to a <br /> flare station and electic generation plant. <br /> This area was initially graded to drain to the south and a final cover was placed <br /> Grading and Installation of a Cover, Leachate Collection System and Landfill Cells over the top. The original Austin Road Unit is now overlain by lined waste <br /> Placed Over the Orignal Unlined Landfill Cells 1999-2017 managment units. These units are synthetically lined and contain a leachate <br /> collection underneath. This has created a hydraulic cap to prevent further water <br /> percolation through the former unlined Austin Road Landfill cells. <br /> Artificial Recharge Basin Installation 2002 This basin introduces clean water into the shallow aquifer and creates a clean <br /> groundwater mound, restricting plume migration northwards. <br /> Initial Groundwater Capture and Treatment System - 2 Wells 2003 <br /> These upgrades were based on various assessments and then the hydraulic <br /> Completion of Groundwater Treatment System Upgrades -4 Wells 7/1/2009 testing results. Conducted to enhance groundwater capture at the edge of Forward <br /> Landfill to ensure impacted water does not leave the site. The extraction rates and <br /> Completion of Groundwater Treatment System Upgrades - 5 Wells 10/18/2019 water quality is monitored ongoing to verify capture of groundwater. <br /> Groundwater Capture System Upgrades Implemented 2/5/2020 <br /> Aquifer Hydraulic Testing 4/15/2019 Conducted to understand water responses and connection in the area at and <br /> surrounding Forward Landfill. <br /> Residential Treatment Systems Installation and Startup 11/1/2019 Conducted to ensure delivery of clean water to residents via their domestic wells at <br /> the point of delivery. <br /> Newcastle Road Investigation Workplan Submission 12/20/2019 <br /> Newcastle Road Investigation Commencement 2/10/2020 <br /> 7833 Newcastle Road Site Investigation Report Submission Conducted to assess soil, soil vapor, and water quality impacts in the area in <br /> 4/17/2020 response to groundwater sampling data collected. <br /> 7833 Newcastle Road Site Investigation Report- Phase 2 Commencement 5/18/2020 <br /> 7833 Newcastle Road Site Investigation Report- Phase 2 Submission 11/6/2020 <br /> Page 1 of 2 <br />