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' had the highest invertebrate density for the Escalante SWA (Cooper and Severn <br />1994c), even though it was only wet for a few weeks and most likely, had not been <br />' wet since 1987. No water or fish control structures are planned for this site. <br />This site will be important to larval razorback sucker if restoration <br />' stocking is successful. Concurrent with the proposed habitat restoration <br />efforts, adult razorback sucker have been stocked into the Gunnison River near <br />Delta. These fish are being tracked with radiotransmitters to determine if, and <br />where, the fish will spawn. Presently, the orientation of this site is on the <br />erosional bend of the main river channel that should serve as a "catch-basin" for <br />downstream drifting razorback larvae. <br />' If this site is developed, Cooper and Severn (1994c) recommended the <br />following additional action: <br />1. The top 12 inches of topsoil should be first be scraped off and used <br />for the final grade. <br />2. The site should be designed so that it is dry periodically. The <br />drying will allow organic matter, including algae, plant roots etc., <br />to decompose, and when next wetted, provide a flush of nutrients to <br />the water column which stimulates biological productivity. <br /> <br />1 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Cost estimates for the proposed actions at these two sites are premature <br />at this time. A detailed survey and study should be conducted by a hydraulic <br />engineer in Fiscal Year 95 to determine the feasibility of the proposed project. <br />Cost estimates could then be developed during the engineering, planning, and <br />design/criteria phase. If the proposed action is determined to be feasible, <br />National Environmental Policy Act (NEPA) compliance will be completed, necessary <br />federal and state permits obtained, and a statement of work completed during <br />early 1995 for funding in Fiscal Year 1996. Implementation for construction <br />could start in Fiscal Year 1996. <br />Impacts of Development to Native Flora and Fauna <br />At Site 1 a road access exists on the west side and on the riverside dike. <br />Heavy machinery such as track or back hoes, dump trucks, and small pickups should <br />have little or no impact to existing vegetation if used in established road <br />tracks. Within the site, construction and trenching of the channel would require <br />removal of non-native tamarisk stands which is the dominant vegetation at Site <br />1. Removal of this vegetation would destroy nesting and winter cover for upland <br />birds. Construction within this area will not be conducted during the spring <br />nesting season for upland birds. Native vegetation such as willow will be used <br />to restore cover. The noise and disturbance of heavy machinery may disturb <br />waterfowl using the river. However, adequate waterfowl habitat exists up- and <br />downstream of the impacted area. No adverse impact to fish species is <br />anticipated. A 404 permit from the U. S. Army Corps of Engineers will be <br />required for installation of the inlet and outlet structures. <br />At Site 2, earth moving equipment would be required to excavate and grade <br />the former oxbow toward the river. There is no established road access to this <br />18 <br />