PROJ00221

• Contract/PO #: FS0017X
• Contractor Name: Ouray, City of
• Contract Type: Loan
• Water District: 0
• County: Ouray
• Loan Projects - Doc Type: Feasibility Study

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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 .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1 Alternatives Eliminated from Further Consideration ............. 4
2.1.1 Stone/Masonry Gravity Wall. . . . . . . . . . . . . . . . . . . . . .. 4
2.1.2 Steel Crib Wall. ............................... 4
2.1.3 Rock-Filled Gabions. ............................ 4

2.2 No Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3 Reinforced Concrete Wall .............................. 4

3.0 Affected Environment and Environmental Consequences. . . . . . . . . . . . " 6
3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " 6
3.2 Environmental Resources Eliminated from Detailed Analysis ..... '. . 6
3.2.1 Fisheries .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6
3.2.2 Water Quality ................................ 6
3.2.3 Air Quality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6

3.2.4 Noise ...................................... 7

3.2.5 Transportation .......... . . . . . . . . . . . . . . . . .'. . . " 7
3.2.6 Hazardous and Toxic Waste . . . . . . . . . . . . . . . . . . . . . " 7
3.3 Vegetation and Wildlife . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " 7
3.3.1 Existing Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3.2 Environmental Effects . . . . . . . . . . . . . . . . . . . . ; . . . . " 8
3.3.3 Mitigation ................................... 8
3.4 Special Status Species ................................ 8
3.4.1 Existing Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4.2 Environmental Effects .. . . . . . . . . . . . . . . . . . . . . . . .. 14
3.4.3 Mitigation .............................,..... 15
3.5 Cultural Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15
3.5.1 Existing Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . " 15
3.5.2 Environmental Effects . . . . . . . . . . . . . . . . . . . . . . . . " 16
3.5.3 Mitigation .................................. 16

4.0 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " 17

5.0 Coordination and Review of the Draft EA . . . . . . . . . . . . . . . . . . . . . .. 18