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POA-2018-00438

Posted: 11/21/2018

Expiration date: 12/20/2018


Rochelle Rollenhagen, with City of Valdez, states that the project purpose is to mitigate flood and channel migration hazards for the Alpine Woods community. The project is needed as the Lowe River main channel has migrated towards the levees protecting Alpine Woods. This migration has caused localized scour that is undercutting the levees and exacerbating the risk of avulsion of the channel into the Alpine Woods community (See Lowe River Extraction Plan Memo October 23, 2018). Work being proposed includes excavation of To excavate material from the Lowe River to re-direct approximately 30% of the two-year flow away from the Alpine Woods community starting upstream of the 10 Mile Creek confluence. The constructed channel should mimic comparable reaches of the Lowe River. The excavation limits are anticipated to be approximate 2,900-feet long x 123-feet wide at the top and 75-feet wide at the base of the channel. The channel would be between 8-12 feet deep with side slopes of 3:1. Excavation of the constructed channel would be conducted when the area is dry and accessible. The excavated material (100,000 cubic yards) would occur in approximately 8.2 acres of active floodplain and would be stocked piled at the 10-Mile Pitt and used to increase the height of the existing dikes and other City of Valdez projects. All work would be performed in accordance with the enclosed plan (sheets 1-2), dated October 25, 2018. The project site is located within Section 30, 31, T. 9 S., R. 4 W.; Latitude 61.0491º N., Longitude 148.9978º W.; South on the Richardson Highway toward Valdez. Near Mile Post 10 and Alpine           Woods Community; Mile Post 10 Pit, near Valdez, Alaska. Please contact Estrella Campellone at         (907) 753-753-2518, toll free from within Alaska at (800) 478-2712, by fax at (907) 753-5567, or by email   at Estrella.f.campellone@usace.army.mil if further information is desired concerning this notice.

POA-2018-00438, Lowe River_PN and Plans

 

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