WSP06981

• File Number: 8276.110
• Description: Grand Valley Unit-Colorado River Basin Salinity Control Project
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 6/16/1978
• Title: Negative Determination of Environmental Impact: Stage One of the Grand Valley Unit - Colorado River Basin Salinity Control Project
• Water Supply Pro - Doc Type: EIS

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A. Description of the Proposal....................................................................... A-I
1. Introduction. .. .. .... .. .. .... .... .... ...... .... .... ...... ........ .... .... ........ ........ ........ ...... A-I
2. Overall Project Plan. I....................................................................... A-I
3. Stage 011e Development...................................... A-2

B. Description of the Environment............... ................... B-1
1. Physical Setting.......................................... B-1
2.. Climate.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .".. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .... B-1
3. Economic Development........................................................................... B-1
4.. Water Resources...................................................................................... B-2
5. Geology and Soils... .. .. .. .. ... . .. .. .... .. . . ... .. ... . . .. .. B-3
6.' Vegetation... .. ...... .. .... .... ........ .... .... .... ............ .... ........ ...... .. .... .... .. ... B-3
7. Fish and lolildlife......................................... B-3

C. Environmental Impacts of the Proposed Action................... C-l

1. Physical Setting.......................................... C-l
2. Economic and Social Conditions. ........................... C-2

3. Water Resources........................................... C-2
4. Fish and '~ildlife......................................... C-2
5. Canal Hazards to Health and Safety........................ C-4

6. Recreation................................................... C-4
7. Agricul tural Chemicals.................................... C-4
8. Cultural Resou~.ces.................................................. c-s
9. Unavoidable Adverse Effects. ...... .......... ........ ...... C-S
10. Short- and Long-Term Environmental Effects.......... ...... C-5
11. Irreversible and Irretrievable Commitment of Resources.... C-6

D. Basis for Negative Determination................................ D-l

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