Laserfiche WebLink
<br />UU.1.Ulu <br /> <br />OO....l~ <br /> <br />Revised Supplemental Draft Environmental Assessment-Chapter 2-Alternatives <br /> <br />Construction <br /> <br />The rock fish passage structure would be completed under a construction contract. <br />Before fish passage could be constructed, authorization for-modification of the dam <br />would be obtained from the owners of the dam, Palisade and Mesa County Irrigation <br />Districts. Temporary construction easements or permits and permanent easements would <br />also be acquired from all affected land owners (Palisade and Mesa County Irrigation <br />Districts, E.R. Jacobson, Union Pacific Railroad, and CDOT) before construction. <br />Reclamation would negotiate protective measures to reduce impacts to private and State <br />properties, rights-of-ways, and facilities. Following construction, any damaged area <br />would be restored, as near as practicable, to its original condition. Access to the dam <br />would be from Highway 6 along an existing trail that lies within the railroad right-of-way <br />and through CDOT property downstream from the dam. Construction staging and <br />material storage would be on adjacent vacant land owned by Eric Jacobson and CDOT. <br /> <br />Construction access and staging area is limited near the dam because of its proximity to <br />the railroad tracks. However, because the fish passage would be located in the river <br />channel and not between the dam and headgates and railroad, construction access would <br />not be as constricted when compared to the conventional fish ladder alternative. <br /> <br />A cofferdam and/or bypass channel may be used to direct the river around the <br />construction area and river flows would not be reduced. Before construction, <br />Reclamation and the contractor would obtain necessary approvals required by the Clean <br />Water Act. Reclamation would request Section 404 authorization under Regional <br />General Permit No. 057 for projects that benefit recovery of endangered fishes. If <br />discharging water for construction dewatering is needed, the contractor would obtain a <br />Section 402 permit. Reclamation would also coordinate construction activities within the <br />100-year floodplain with Mesa County. Construction would be scheduled during low <br />river conditions in the fall and winter of 2005-2006. <br /> <br />The estimated construction cost for this alternative is approximately $4,600,000. Costs <br />, for operations and maintenance for this alternative would be negligible. <br /> <br />Operation, Maintenance and Replacement Measures <br /> <br />The downstream rock passage would require no regularly scheduled actions related to <br />operation and maintenance, other than inspection. Reclamation would enter into a <br />contract with Palisade and Mesa County Irrigation Districts to provide inspection and <br />maintenance as needed. <br /> <br />14 <br />