Finding of No Significant Impact & Tiered Environmental Assessment: Public Law 84-99 Rehabilitation Program Levee Unit R-627 - Grace Street Ditch, Douglas County, Nebraska.

摘要

In accordance with the National Environmental Policy Act (NEPA) and implementing regulations, a tiered Environmental Assessment (EA) has been prepared to evaluate the effects of the proposed Levee Unit R-627 Grace Street Ditch Bank Erosion Repair Project. The proposed project involves excavating ditch sediments that resulted from the bank erosion, reshaping the levee bank back to a 2:1 slope, and placing rock rip-rap along approximately 100 feet of the reshaped bank. Two alternatives were considered: the Build Alternative (Recommended Alternative) and the No Action Alternative. Under the Recommended Alternative, the necessary rehabilitation to the Grace Street Ditch will be preformed. The No Action Alternative was considered but not selected because it would not meet the purpose and need, which is to repair the levee to pre-disaster condition in order to provide flood damage reduction. The environmental consequences of the proposed action on the physical, biological, and cultural resources have been evaluated. The factors that were influential in my review included (a) the proposed project will repair the erosion and allow normal operation of the flood control works; (b) no significant adverse impacts to cultural or historical resources are anticipated to occur; (c) federally endangered and threatened species will not be impacted by the proposed project; (d) all applicable federal and state regulations will be met prior to contract award; and (e) resource agencies and the public have no objections to the proposed action nor are there significant unresolved issues. In addition, Best Management Practices will be incorporated into the project description to reduced construction-related noise; avoid the spread of noxious weeds; and minimize air quality, water quality, and wildlife-related impacts (as described in Sections 3.1 and 3.5 of the EA).