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WSPC00304
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Last modified
1/26/2010 10:48:53 AM
Creation date
10/9/2006 2:04:33 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.106.I
Description
Colorado River Water Projects - Animas La Plata - Environmental Studies
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
4/15/2004
Author
DOI-BOR
Title
Animas La Plata Project - Environmental Commitment and Monitoring Plan
Water Supply Pro - Doc Type
Report/Study
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />000859 <br /> <br />(i) Minimize noise and visual impacts to the extent practicable within the area <br />designated for construction of the closest existing or new golden eagle <br />nest during the period of December 1 and July 15 of any year. <br />(ii) Take all reasonable measures to preclude construction personnel activity <br />on Carbon Mountain during the nesting period, Under no circumstances <br />should an employee approach a nest site, an active nest, an eagle or an <br />eaglet. Design blasts to minimize all fly rock from projecting toward the <br />existing nests. The contractor shall limit blasting to between the hours of <br />12:00 p.m, to 3:00 p,m. unless otherwise approved by the Contracting <br />Officer. <br />(iii)Preclude any construction operations to the extent practicable within an <br />approximate 1f4 mile radius of the active nests during the period of eagle <br />nesting. The exact period of this nesting is unknown. However, it is <br />assumed this period will be between December 1 and July 15 of any year, <br />This period will be firmly defined at the time of construction by the <br />Contracting Officer in consultation with the Fish and Wildlife Service, <br />Should it be determined by the Government that construction operations <br />do not have any negative impacts or impacts that cannot be avoided, such <br />operations will be allowed to proceed throughout this period. <br /> <br />b) Compensatory Mitigation: Reclamation will implement the conservation measures, <br />which include mitigation and monitoring, found in the ALP Biological Opinion issued by <br />the Service on June 19, 2000. The measures address the Colorado pikeminnow, <br />razorback sucker, and bald eagle, The conservation measures can be found in <br />Attachment C, <br /> <br />c) Monitoring: <br />i) Outflows from Ridges Basin Reservoir: <br />(1) Reclamation will monitor any water leaving Ridges Basin Reservoir to <br />determine if escapement of nonnative fishes is occurring. Refer to the 5) <br />Aquatic Resources section for more details on the design of Ridges Basin <br />outlet facilities and monitoring of water being released from Ridges Basin <br />Reservoir <br />(2) The Conservation measures found in Attachment C also contains monitoring <br />measures which Reclamation will implement. <br /> <br />7) Geology and Soils - Seismic events within the areas that facilities would be located would <br />not be expected to be of a magnitude greater than the design of facilities could withstand. <br />Rapid filling and discharges from the Ridges Basin Reservoir could cause reservoir-induced <br />seismicity. Wave action and rapid reservoir surface elevation changes could cause <br />sedimentation and erosion along the shorelines of Ridges Basin Reservoir Dewatering for <br />construction of Ridges Basin Dam and filling of the reservoir could increase the natural <br />seepage and surface release of coal-bed methane, Ground disturbance during construction <br />of structural and non-binding components would expose soils to potential increases in wind <br />and water erosion and increase risk of slope instability. <br /> <br />23 <br />
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