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1 Draft Supplemental Environmental Impact Report Page IV.F-26 Forward Inc. Landfill 2018 Expansion Project Impacts and Mitigation Measures For the purposes of this section,impacts and mitigation measures already required from past r EIRs and project approvals are considered to be part of the proposed project,unless otherwise specified. Note that, for the purposes of document organization, impacts and mitigation ' measures below are labeled as "F_". These correspond to impacts and mitigation measures "H_" in the Summary section, for consistency with the 2013 EIR. Impact F.1. Loss of Wetland Habitat. On December 18,2007,the U.S.Army Corps of Engineers ' (Corps)verified 1.25 acres(54,371 square feet)of waters of the U.S. on the project site along the southern branch of Littlejohn's Creek. On June 14,2018,Monk&Associates re-mapped the project site and field verified an equivalent acreage(1.25 acres) of waters of the U.S./State to be present within the stretch of the southern branch of Littlejohn's Creek running along the northern boundary of the recycling and composting facility.On December 17, 2018,the site's ' wetlands were re-verified and a Preliminary Jurisdiction Determination was made by the Corps with no change in wetlands location or acreage. (US Army Corps of Engineers,letter from Chandra Jenkins,Senior Project Manager, US ACOE, to Robert Fishburn, Forward Inc., December 17,2018). As part of the proposed project, the South Branch of the South Fork of Littlejohn's Creek would be relocated along the eastern and southern boundary of the proposed expansion area.This would serve to increase the separation between the landfill and the creek and to accommodate more area for the Forward Landfill.This would result in the filling of approximately 3000 feet of creek channel supporting approximately 1.25 acres of wetlands and open water habitat subject to the jurisdiction of the USACE, CDFW and RWQCB. However,the project would create 1.87 acres of wetland and/or open water habitat in the longer,relocated creek channel. To address FAA concerns regarding increasing the risk of bird strikes, it is anticipated that the banks of the relocated creek would be regularly mowed to prevent the establishment of riparian vegetation.This management prescription would mirror the existing management requirements and condition of the existing creek maintained by the Flood Control District.There is no woody vegetation that is allowed to establish and mature in the existing channel. However, similar to the existing condition of this channel,wetland vegetation would be allowed to establish within the creek bed. Given that the relocation of the channel would result in the temporary loss of approximately 1.25 acre of wetland and creek habitat,this would be a significant impact. In the long term,the project would increase wetland and creek habitat on the site by creating habitat within the relocated and longer creek channel. During landfill development,the proposed new entrance road would cross the relocated creek channel. The creek crossing would be designed to span the creek,with all work avoiding areas under the jurisdiction of the USACE, CDFW, and RWCQB. 1 57 2018.Onee the delineeAiefi r r-egula4ed areas aseef4ained.This will sen,e to eenfifm the aer-eage ef wetlands to be ifnpaeied and fer-whieh e fiA ill nt aets tor fnitigatien,A.11 be p 58 r r