March 2006 - Laserfiche WebLink

Home Browse Search

sites, or similar preserves, are expected. In -water construction would be timed to avoid important fish spawning activity. Bank protection at one of the three sites, the Leeper Island Park site, would help protect two municipal wells. h. Determination of Cumulative and Secondary Effects on the Acniatic Ecosystem: No significant adverse cumulative or secondary impacts are expected. III. FINDINGS OF COMPLIANCE WITH THE RESTRICTION OF DISCHARGE No significant adaptations of the guidelines were made relative to this evaluation. The proposed action is to protect all three sites with riprap stone. Alternative protection methods include articulated concrete blocks, gabions, mechanically stabilized embankment walls, and combination sheet pile toe protection with a riprap slope protection. The alternative of No Federal Action was considered. The riverbank protection projects would not violate applicable water quality standards. The project would not result in significant adverse effects on human health and welfare, including municipal and private water supplies, recreational and commercial fishing, plankton, fish, wildlife, and special aquatic sites. Life stages of aquatic or other wildlife species would not be adversely affected. Significant adverse effects to the aquatic ecosystem in terms of diversity, productivity, stability, recreation, aesthetic, and economic values would not occur. Coordination with the U.S. Fish and Wildlife Service indicates that adverse effects on species Federally listed as "threatened" or "endangered" are not likely to occur. Appropriate steps taken to minimize adverse effects on the aquatic ecosystem include the use of erosion and sedimentation control measures, limitations on in - water equipment operations, and avoidance of in -water construction during important fish spawning runs. The completed project would protect a road, municipal wells, and several outfalls and utilities. The project also would reduce erosion induced turbidity and sedimentation into the river. On the basis of the Guidelines for Specification of Disposal Sites for Dredged or Fill Material (40 CFR part 230), it has been determined that the proposed action is in compliance with Section 404 of the Clean Water Act. C-4