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Draft Supplemental Environmental Impact Report Page IV.F-27 Forward Inc. Landfill 2018 Expansion Project The surface water control plan for the existing Forward Landfill consists of an integrated system of bench ditches,perimeter ditches, and storm water retention basins. The landfill is designed so that surface water would run off via sheet flow until it is intercepted by a bench ditch. Bench ditches subsequently drain toward downdrains,which discharge to perimeter ditches. Finally, ' the perimeter ditches drain to the sedimentation/detention basin.The proposed project includes the removal and relocation of some of the existing bench ditches, sedimentation ponds, and leachate impoundments. These man-made features appear to have been constructed in upland habitats and therefore are not expected to be subject to USACE jurisdiction. Closure and relocation of these features would be conducted in accordance with applicable regulations and as approved by the regulatory agencies. Mitigation Measure F.1. Prior to site grading,the project sponsor shall obtain re-verification of the jurisdictional delineation conducted for the project;this will ascertain the extent of jurisdictional waters and wetlands on the site, including the creek and potentially onsite storm control features(detention basins, dry ditches). The re-verified jurisdictional delineation will serve to confirm the acreage of jurisdictional area to be impacted and for which mitigation will ' be provided. Prior to site grading,the project sponsor shall obtain permits under Sections 401 and 404 of the Clean Water Act and Section 1602 of the California Fish and Game Code for all impacts to jurisdictional resources;all permit conditions shall be implemented. At a minimum, an equivalent acreage of jurisdictional area to be impacted shall be established within the relocated segment of the South Branch of the South Fork of Littlejohn's Creek(1:1 in-kind replacement of jurisdictional habitats impacted by the creek relocation), and if required by ' permit conditions, additional compensatory mitigation will be purchased from an USACE, RWQCB and/or CDFW-approved wetland mitigation bank.These mitigation components are discussed further below. Onsite Replacement of Jurisdictional Habitat A Creek Channel Mitigation and Monitoring Plan shall be prepared and submitted for agency review to ensure a "no net loss" of wildlife value or acreage of creek habitat. At a minimum, the Plan shall include the creation of the equivalent(in-kind)acreage of jurisdictional habitat within the relocated segment of the South Branch of the South Fork of Littlejohn's Creek. The Concept Design Report(Questa 2017)indicates that approximately 1.87 acres of creek habitat would be created in the longer,relocated creek channel, so an increase in jurisdictional habitat (1.87 acres vs. 1.25 acres)is anticipated. The Project Sponsor shall ensure that the mitigation area,along with an appropriate upland buffer, are preserved in perpetuity via recordation of a deed restriction or similar easement. The Creek Channel Mitigation and Monitoring Plan shall include the following details: • The location(s) of mitigation areas, including the types and extent of each habitat type to be created. • Mitigation for loss of existing jurisdictional habitat shall at a minimum include the creation of equivalent acreage of jurisdictional habitat present within the channel (as determined by the re-verified jurisdictional delineation). Mitigation habitats shall replace the existing functions and services provided by the impacted channel.