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Dam Decommissioning

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Key: additions deletions

Showing 8 pages

	Date/Time	Made By	Edit Note	Type	Scope
	Jul 11 2010, 5:57 PM EDT	kdyson	Moved from: GI Assets	move	No content added or deleted.
Change: Moved by kdyson Jul 11 2010, 5:57 PM EDT
	Jul 11 2010, 5:55 PM EDT	kdyson	added image	edit	1 word added 1 image added
Change: to manmade facilities (including downstream properties); Design - Addressing removal, site & streambed restoration and recreational potential; and Dam removal & stream restoration - Addressing construction sequencing, site protection, debris cleanup & removal and vegetation.IMAGE:CASE STUDIESElwha River Dam Removal (Washington State) View changes from previous version. (Word count: 336)
	May 31 2010, 9:21 PM EDT	karinoly		edit	8 words added
Change: impact to manmade facilities (including downstream properties); Design - Addressing removal, site & streambed restoration and recreational potential; and Dam removal & stream restoration - Addressing construction sequencing, site protection, debris cleanup & removal and vegetation.CASE STUDIESElwha River Dam Removal (Washington State) View changes from previous version. (Word count: 335)
	May 26 2010, 4:10 PM EDT	WilliamWarren001		edit	38 words added 4 words deleted
Change: Including sediment characterization, impact to aquatic wildlife & plants, water quality, impact to manmade facilities (including downstream properties);Design - ThisAddressing removal, site & streambed steprestoration and addressesrecreational removal;potential; andDam removal & stream restoration - Addressing construction sequencing, site protection, View changes from previous version. (Word count: 327)
	May 26 2010, 3:59 PM EDT	WilliamWarren001		edit	66 words added 6 words deleted
Change: Now, with that design life exceeded, the cost of maintenance and compliance (either to meet current environmental regulations or seismic codes) outweigh the revenue they garner from power production. Thus, they are good candidates for removal.There are three stages in the removal of a dam:Feasibility assessment -Design View changes from previous version. (Word count: 296)
	May 26 2010, 3:53 PM EDT	WilliamWarren001		edit	37 words added
Change: are not dams.(Source: The Safe Dams Act of 1973)Generally speaking, in the United States dams have a design life of 50 years. The dams built in the 1960's that generate electricity (hydroelectric dams) ewere granted a 50 year license by the Federal Energy Regulatory Commission. View changes from previous version. (Word count: 240)
	May 26 2010, 3:49 PM EDT	WilliamWarren001		edit	202 words added
Change: , or (2) has or will have an impounding capacity at maximum water storage elevation of thirty (30) acre-feet or more. Provided, however, that any View changes from previous version. (Word count: 202)
	May 26 2010, 3:40 PM EDT	WilliamWarren001		create	No content added or deleted.
Change: Created by WilliamWarren001 May 26 2010, 3:40 PM EDT for: no reason given

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