FLOOD09503

• County: Ouray
• Community: Ouray
• Stream Name: Skyrocket Creek
• Basin: Gunnison
• Title: Skyrocket Creek Diversion Wall Replacement Feasibility Study
• Date: 12/1/2000
• Prepared For: Ouray
• Prepared By: Buckhorn Geotech
• Floodplain - Doc Type: Project

Contents

1.0 Purpose and Need for Action ................................ 1
1.1 Proposed Action .................................... 1
1.2 Need for Proposed Action . . . . . . . . . 1
1.3 Project Location . . . . . . . . . 1
1.4 Purpose of the EA. . . . . . . . 3
1.5 Decision that Must Be Made 3

2.0 Alternatives .. . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Alternatives Eliminated from Further Consideration
2.1.1 Stone/Masonry Gravity Wall. . . . . . . .
2.1.2 Steel Crib Wall. ...................
2.1.3 Rock-Filled Gabions. ................
2.2 No Action . . . . . . . . . . . . . . .
2.3 Reinforced Concrete Wall .................

3.0 Affected Environment and Environmental Consequences. .......
3.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . .. .......
3.2 Environmental Resources Eliminated from Detailed Analysis
3.2.1 Fisheries . . . . . . . . . . . . . . . . . . . .
3.2.2 Water Quality ................
3.2.3 Air Quality. . . . . . . . . . .
3.2.4 Noise ...............
3.2.5 Transportation . . . . . . . . . . .
3.2.6 Hazardous and Toxic Waste.
3.3 Vegetation and Wildlife . . . . .
3.3.1 Existing Conditions. .
3.3.2 Environmental Effects
3.3.3 Mitigation ........
3.4 Special Status Species .....
3.4.1 Existing Conditions . .
3.4.2 Environmental Effects
3.4.3 Mitigation ......
3.5 Cultural Resources . . . . . . . . . . . . . .
3.5.1 Existing Conditions. . .
3.5.2 Environmental Effects
3.5.3 Mitigation ...

4.0 Conclusions . . . . . . . . . . . .

5.0 Coordination and Review of the Draft EA

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