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. Supplement to Final Enviro al Impact Report Page 6 Forward Inc.Landfill Development Project-South and Northeast Portions To provide further separation of the creek from the landfill,create a contiguous disposal area,and optimize landfill airspace,an approximately 3,000-foot reach of the South Branch of the South Fork of Littlejohn Creek would be relocated to the eastern and southern boundaries of the landfill(see Figure 1). The creek relocation is intended to: (1)provide riparian habitat restoration/ creation, (2) provide adequate flood control(i.e.,to have capacity to carry the 100-year flow within its banks),and (3) provide a stable channel design that meets or exceeds the functions and values of the existing creek. The relocated creek would be 3,200 feet in length. The existing creek traversing the landfill is generally a trapezoidal channel with 10 to 12 foot banks and a 10-to 15- foot bottom width.The channel measures,on average,60 feet from bank top to bank top. This equates to a 4.13-acre creek zone. There is little riparian habitat because the creek channel is regularly cleared of emergent vegetation by County personnel.According to the wetland delineation3 approximately 1.25 acres of jurisdictional wetlands exists within the existing channel. The existing creek performs relatively well in terms of flood contro14. The existing channel would be moved approximately 1,000 feet to the south to accommodate the further development of the Forward Landfill(see Sht 1). The proposed relocated channel would be approximately 3,200 feet long and would have greater flood control ability than the existing channel.The new channel would create approximately 8.82 net acres of riparian woodland habitat,bank top to bank top area in a 120-foot wide channel. The proposed relocation would create 4.55 acres of jurisdictional areas that are inundated at winter base flow. This represents a mitigation ration of 3.6:1 for jurisdictional areas. Constructing the channel would require moving approximately 140,000 cubic yards of material. The creek relocation would use design and construction techniques similar to those used in the successful relocation of the North Branch of the South Fork of South Littlejohns Creek in 2002. Litter control in the relocated creek would follow established litter control practices at the site. A combination of monitored litter fences, screening,and litter pickers would be used. The environmental impacts of the creek relocation would be the same as discussed in the FEIR5. Ancillary Facilities After realignment of the South Branch,the main entrance,office trailer,scale house and scales would be relocated to the southeast corner of the landfill. During excavation of the expansion area, the existing leachate evaporation basin(WMU F North) and sedimentation basin would be removed and replacement basins built west of the southern development area(see Sht 2).Closure and relocation of the leachate and sedimentation basin would be in accordance with applicable regulations and as approved by the regulatory agencies. 3 Concept Design Report, South Branch of the South Fork of Little John Creek Relocation Project(Questa Engineering Corp,2007) 4 Project Description for Land Use Permit Application, Forward Landfill(Bryan A. Stirrat&Associates,2008). 5 Forward Landfill Expansion Final Environmental Impact Report(Grassetti Environmental Consulting,May 2013)