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5.0 PROPOSED DESIGN AND OPERATIONS The following section describes the proposed expansion design and operations for the Forward expansion project, including the creek relocation, lateral expansion, and operational modifications. The environmental monitoring and control systems described in Section 4 will be expanded along with the rest of the site to protect the environment and to comply with applicable regulatory requirements. 5.1 CREEK RELOCATION The South Creek currently traverses the southern portion of the site and will form a valley between two waste management units if development of the site follows the currently permitted plan. FL is proposing to relocate approximately 3,200-ft of the South Creek to the eastern and southern boundaries of the property. This relocation would provide two benefits: (1) allowing the landfill area to be contiguous will optimize utilization of the refuse footprint, and (2) provide significantly improved riparian habitat and flood control features. It should be noted that the North Creek was successfully relocated in 2002 for similar purposes. The goals and objectives of the creek relocation design can be divided into three general categories: (1) provide riparian habitat restoration/creation to mitigate the filling of a portion of the South Creek during the proposed development of the southern portion of FL; (2) provide adequate flood control (i.e., has capacity to carry the 100-year flow within its banks) in the realigned section of the creek; and (3) provide a stable channel design that meets or exceeds the functions and values of the existing creek. Thus, the design goal is to create a channel that is as natural as possible and provides 100-year flood carrying capacity. The existing creek channel is generally a trapezoidal channel with 10- to 12-foot banks and a 10- to 15-foot bottom width. There is little existing riparian habitat and it is regularly cleaned of emergent vegetation by public works personnel. The existing channel performs relatively well from a flood control perspective. According to applicable existing flood plain mapping, the channel has the capacity to convey the 100-year flow throughout the portion to be relocated. Forward Landfill Project Description 5-1 BRYAN A.STIRRAT S ASSOCIATES (J:\Allied\Forward\2007.0018 Lateral Expansion\Reports\Proj Descrip\021308 Final Proj Des\Sec 5.doc:2/13/2008)