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16-016 Corps seeks public comments for Milton-Freewater Nursery Bridge Drop Structure repair draft FONSI and Environmental Assessment

Published April 5, 2016
Figure 1-1. Location of the Nursery Bridge Drop Structure in Milton Freewater, Oregon.
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Figure 1-1. Location of the Nursery Bridge Drop Structure in Milton Freewater, Oregon.

Figure 1-2: Aerial Overview of the Nursery Bridge Drop Structure and Staging Area.
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Figure 1-2: Aerial Overview of the Nursery Bridge Drop Structure and Staging Area.

Figure 2-1: Plan View of Installation of the Rip Rap along Gabion Mattress. Approximately 9,300 square feet of existing substrate will be removed, replaced with rip rap tied to downstream roughened channel at a 10:1 slope, and re-covered and choked with the removed existing substrate. Figure 2-2: Cross Section of the Spillway Toe Showing Proposed Location of Rip Rap Installation.
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Figure 2-1: Plan View of Installation of the Rip Rap along Gabion Mattress. Approximately 9,300 square feet of existing substrate will be removed, replaced with rip rap tied to downstream roughened channel at a 10:1 slope, and re-covered and choked with the removed existing substrate. Figure 2-2: Cross Section of the Spillway Toe Showing Proposed Location of Rip Rap Installation.

Figure 2-3: Aerial view of Nursery Bridge drop structure showing proposed diversion dams (red), pumping station (green), and work areas (orange) for the rip rap installation. Subsurface flows that find a way around the annual diversion dam are likely to enter the project site and may need to be diverted through pumping (blue).
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Figure 2-3: Aerial view of Nursery Bridge drop structure showing proposed diversion dams (red), pumping station (green), and work areas (orange) for the rip rap installation. Subsurface flows that find a way around the annual diversion dam are likely to enter the project site and may need to be diverted through pumping (blue).

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MILTON-FREEWATER, Ore. –  The U.S. Army Corps of Engineers (USACE), Walla Walla District (Corps), invites public comments on the draft Finding of No Significant Impact (FONSI) and Environmental Assessment (EA) for the Milton-Freewater Nursery Bridge Drop Structure repair project. 

The Corps proposes to repair high-flow scouring on the downstream gabions and riprap of the Nursery Bridge Drop Structure in the Walla Walla River located in Milton Freewater, Oregon. Construction is slated to begin in July 2016.    

Links to the draft FONSI and EA are available online at http://www.nww.usace.army.mil/Missions/EnvironmentalCompliance.aspx.

The public comment period will be from April 4 through May 4, 2016.  E-mail comments to: NEPANWW@usace.army.mil or submit comments via U.S. Postal Service to:  

U.S. Army Corps of Engineers, Walla Walla District
CENWW-PM-PD-EC, Nursery Bridge Drop Structure
201 North Third Avenue, Walla Walla, WA  99362-1876 

Comments must be postmarked or e-mailed no later than May 4, 2016, to be considered and included in the public record.
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Contact
CENWW-PA
509-527-7020

Release no. 16-016

Milton Freewater
USACE
Walla Walla District
Nursery
Bridge Drop
construction
Environmental Compliance
public comments