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Draft Supplemental Environmental Impact Report Page 11-28 <br /> Forward Inc. Landfill 2018 Expansion Project <br /> F. 5: The re-routing of Proposed as Part of the Project. Less than <br /> the South Branch of Significant <br /> South Littlejohns Creek The following measures are proposed as part of the project, as described in the <br /> could result in flooding if Project Description and design study for the proposed creek realignment: <br /> the new alignment is not • The channel must function as a natural riparian corridor, require little or no <br /> designed to accommo- maintenance once the vegetation is established, and should provide 100-year <br /> date peak flows. flood protection. <br /> • The channel slope and depth will be appropriate to the 100-year flood <br /> protection. The channel slope and depth is based on the invert elevations of the <br /> existing channel at the start and end of the new channel. The slope between <br /> these two points along this alignment is designed for 0.00055 ft/ft which <br /> translates into a ground surface profile along the alignment a channel depth <br /> between 10 and 12 feet. <br /> • The appropriate responsible agencies must review and approve the updated <br /> April 2018 design for the relocation of the South Branch of South Littlejohns <br /> Creek. <br /> Implementation of these procedures would reduce the impact to a less-than- <br /> significant level. <br /> F.6. The project could Proposed as Part of the Project. Less than <br /> potentially contribute to Significant <br /> known VOC- Forward Landfill has agreed to a short-term and long-teen mitigation of the <br /> contaminated plume and offsite impacts of the VOC plume, including providing of mitigation water to <br /> other groundwater residence in the downgradient area who's domestic wells are still adversely <br /> contamination. affected by the VOC plume.The long-term solution, with a financial <br />