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• • • Draft Supplemental Environmental Impact Report Page III-33 Forward Inc. Landfill 2018 Expansion Project • • Landfill gas monitoring is performed on a quarterly basis at the existing Forward Landfill. • Twenty-nine landfill-gas probes incorporating 83 sampling points' are in the compliance monitoring system and are located around the perimeter of the existing landfill and the • "Brocchini' parcel to the southwest of the existing landfill site. The main office trailer and • maintenance yard are also monitored to assess potential gas accumulations at the foundations. • EPA Consent Decree • • On May 2,2012,Forward, the U.S. EPA and the San Joaquin Valley Air Pollution Control District • (District)entered into a stipulated consent decree which was approved by the U.S.District Court for the Eastern District of California, under which Forward will modify the operation of its gas • collection and control system with respect to extraction well oxygen levels and temperature, complete Phase II of the planned and ongoing improvement of Forward's landfill gas extraction • system, apply for a new Title V air permit from the District that would limit oxygen levels in the • landfill gas extraction wells, relocate Forward's perimeter gas probes to the boundary line of the expansion area, and provide for other air quality protection measures. On September 2,2014,U.S. • District Court Magistrate Judge Edmund Brennan issued an order terminating the Consent Decree on the basis that Forward,USEPA and the District all confirmed that Forward had fully complied • with all requirements of the Consent Decree. • F. PROPOSED PROJECT MODIFICATIONS • • The proposed physical and operational changes are described below. • Development of Additional Landfill Disposal Cells Within Permitted Landfill Boundary • • Development of additional landfill cells would increase the disposal footprint from approximately • 355 acres to 372 acres. The proposed additional development area includes two areas within the currently permitted landfill boundary as shown on Figure HI.0-4;approximately 8.72 acres in the • northeast comer of the site and approximately 8.61 acres in the south area. (The western boundary • of the footprint of the added cells would in all cases be consistent with applicable law and • implementing advisories as detailed in Table 3A of the San Joaquin County Airport Land Use Compatibility Plan.) The acreage added in the south area would be gained by shifting the existing • disposal footprint north and realigning the creek to the southern and eastern boundaries of the site. • The acreage added in the northern area was formerly part of the 100-year flood plain for the North • Fork of South LittleJohns Creek and was not permitted for waste disposal;however, after the • North Fork of the creek was realigned,this area is no longer in the 100-year floodplain and can be developed as landfill. The maximum elevation of refuse fill in the additional development areas • would be approximately 190 feet above mean sea level (MSL), lower than the permitted maximum height of 210 feet MSL for the existing Forward Landfill. The footprint of the refuse • fill would be set back a minimum of 100 feet from the east property boundary. • The additional development areas would have a base liner and Leachate Collection and Recovery • System(LCRS) consistent with currently constructed modules and in compliance with pertinent • • 9 Each landfill gas probe can contain multiple sampling points. • • • •