Comment Period Extended for Mount St. Helens Plan

The U.S. Army Corps of Engineers has extended the public comment period to Oct. 21 for a draft Supplemental Environmental Impact Statement and Mount St. Helens Long Term Sediment Management Plan. The comment period was scheduled to end Oct. 6

The Corps is evaluating several alternatives in the draft SEIS to manage flood risk for the cities of Castle Rock, Lexington, Kelso and Longview, Washington through the year 2035.

The original Mount St. Helens Sediment Management Plan, authorized in 1985, included construction of a sediment retention structure, levee improvements and dredging. In addition, the original plan indicated that additional sediment management actions would be needed sometime after year 2000 and acknowledged other actions besides dredging might be more appropriate in the future.

The draft SEIS identifies remaining actions needed to be completed from the original MSH project and focuses on the actions’ associated impacts.

In addition to a No Action alternative, three alternatives were identified that would address the flood risks associated with sediment build up in the lower Cowlitz River through 2035. They are:

1. Cowlitz River dredging only;

2. SRS spillway and embankment raise;

3. A phased construction plan consisting of:
a. SRS spillway crest raises;
b. Grade-building structures;
c. As needed dredging.

Environmental impacts for the three alternatives have been evaluated and are reported in the draft SEIS. The SEIS was prepared by the Portland District, with formal consultation with the U.S. Fish and Wildlife Service and the National Marine Fisheries Service.

The Corps selected the phased construction alternative as its preferred alternative. Based on research and analysis, the Corps determined that this alternative provides specific actions and necessary flexibility to manage the flood risk to cities near the Cowlitz River.

Press Release, October 8, 2014

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3rd International Congress Hydraulic Engineering Structures and Dredging

Russia’s leading maritime industry Media Group PortNews (www.portnews.ru) holds a traditional annual Congress “Hydraulic Engineering Structures and Dredging” in Moscow. 

The two-day Congress includes the 7th International Forum of Dredging Companies and the 3rd Technical Conference “Modern Solutions for Hydraulic Engineering”.

Infrastructure development is among the real sources of Russia’s economy growth. Construction of port facilities and new hydraulic engineering structures on the country’s inland waterways constitute an essential part of all infrastructure projects. It is important to take into account the best international practices to implement these projects effectively.

The program of the Congress will be devoted to the latest technologies for dredging and hydraulic engineering works. Speakers and delegates will refer to real projects to discuss specifics features of dredging works, as well as dedicated fleet and equipment involved.

To learn more about event, please, contact the organizing committee: snitko@portnews.ru

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