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WSP04428
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Last modified
1/26/2010 12:55:26 PM
Creation date
10/12/2006 12:19:18 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.100.50
Description
CRSP
Basin
Colorado Mainstem
Date
3/1/1988
Author
WAPA
Title
Replacement Resources Processes - Final Methods Report
Water Supply Pro - Doc Type
Publication
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<br />Background <br /> <br />Section 2 <br /> <br />The post-1989 finn power commitment levels (1449 MW of capacity and 6,156,000 MWh <br />of energy) was selected by Western as the SLCNIP preferred alternative, following an <br />extensive public process. The ROD in Western's EPM-EIS establishes Western's <br />. commitment level for its wholesale SLCNIP finn-power contracts which expire in 2004. <br />The ROD was signed by Western's Administrator on October 17, 1996. <br /> <br />2.2.8 FUTURE SLCA/lP OPERATIONAL CHANGES <br /> <br />Additional changes to the operating criteria for GCD, the SLCNIP marketable resource, <br />and future replacement resource demand could occur as a result of research and long-term <br />monitoring at GCD, and future changes in resource decisions by Western's customers. <br />Potential future changes in operations at other SLCNIP facilities may also affect Western's <br />custOmers' resource decisions. Until it is established to what degree mimicking pre-dam <br />flows helps native fish populations to survive, research flows will likely continue to be <br />tested and/or implemented at SLCAI1P generating resources for the foreseeable future. <br /> <br />Some discussion of the current operations at the SLCNIP facilities relevant to this study <br />was provided earlier. The operating regimes at several SLCNIP facilities, including <br />Flaming Gorge, Blue Mesa, Morrow Point and Crystal dams of the Aspinall Unit; and <br />GCD, have recently been altered due to potential impacts to downstream. ecological, <br />cultural and recreational resources. These modified release conStraints, which typically <br />presen'be water releases to mimic pre-dam river flows, have reduced the flex~bility of dam <br />operations and resulted in financial and operational impacts to Western's customers. <br />Potelltial future operational changes at GCD, Flaming Gorge and Aspinall are discussed <br />below. <br /> <br />March 1998 <br /> <br />Western Area Power Administration <br /> <br />2-9 <br /> <br /> <br />2.2.8.1 GLEN CANYON DAM <br /> <br />Potential future changes to GCD operations include: <br />· recurring tests of beach building and habitat maintenance flows; <br />· adaptive management program special releases (endangered fish research <br />releases); <br />· changes to Upper Colorado River basin depletions; and <br />· revised operational constraints. <br /> <br />2.2.8.2 FLAMING GORGE <br /> <br />Flaming Gorge currently generates about 50 MW less than its maximum capability, due <br />primarily to steady flows during winter as a result of the 1992 Biological Opinion. A <br />revised biological opinion is scheduled to be issued in 1997. At that time, Reclamation will <br />prepare a NEPA document, potentially an EIS, on the operation of Flaming Gorge Dam. <br />Future' operational constraints could contain provisions for continuation of exception <br />
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