WSP01558

• File Number: 8221.112.I
• Description: Central Arizona Project
• State: AZ
• Basin: Colorado Mainstem
• Date: 1/15/1973
• Title: Final Environmental Statement: Authorized Havasu Intake Channel Havasu Pumping Plant and Buckskin Mountains Tunnel - Central Arizona Project
• Water Supply Pro - Doc Type: EIS

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III.

TABLE OF CONTENTS (Continued)

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K. Colorado River . . . . . . . . . . . . . . . . . . . . . . 31
1. F'l.ow......................... 32
2. Salinity....................... 33
L. Projected FUture Environment of the Feature Area
Without the Feature as a Part of Central Arizona
Pzooj ect . . . . . . . . . . . . . . . . . . . . . . . .. 35

ENVIRONMENTAL IMPACT OF THE PROPOSED ACTION

. . . . . . . . .

38

A. Definitions for Impact Evaluation . . . . . . . . . . .. 38
B. General statement of Impact . . . . . . . . . . . . . .. 39
1. Natural Resource Impacts . . . . . . . . . . . . . . . 39
2. HUDE.n Impacts . . . . . . . . . . . . . . . . . . .. 40
C. Direct Impact of the Proposed Action . . . . . . . . . . . 41
1. Impacts Related Primarily to Construction

Activities . . . . . . . . . . . . . . . . . . . . . . 41
a. Borrow Areas . . . . . . . . . . . . . . . . . . . 42
b. Construction Access Roads and C8.q)s . . . . . .. 42
c. Waste Mt. terial Disposal . . . . . . . . . . . .. 44

d. .D.1st.... . . . . . . . . . . . . . . . . . . . 44
e. Storage of Mt.terials . . . . . . . . . . . . . . . 45
f. EqUipment Storage and Service Areas . . . . . .. 45

g. Lighting.. . . . . . . . . . . . . . . . . . . . 45
h. 1ioise. . . . . . . . . . . . . . . . . . . . .. 46
i. Increase in Traffic . . . . . . . . . . . . . .. 46
j. Erosion of Disturbed Areas. . . . . . . . . . . . 47
k. Water Supply for Construction . . . . . . . . .. 47
1. Disturbance of Vegetation . . . . . . . . . . .. 47
m. Temporary Disturbance of the Bill Williams
Portion of the Havasu National Wildlife

Refuge . . . . . . . . . . . . . . . . . . . . . . 48
n. Fish and Wildlife . . . . . . . . . . . . . . . . 48
o. Turbidity During Construction . . . . . . . . . . 51
p. Sociological . . . . . . . . . . . . . . . . . . . 51
q. Archeological and Historical . . . . . . . . . . . 53
r. Topography . . . . . . . . . . . . . . . . . . . . 53
s. Mineralization . . . . . . . . . . . . . . . . . . 53
t. Economic Resources . . . . . . . . . . . . . . . . 54
u. Earthquake Hazard . . . . . . . . . . . . . . . . 54
2. Impacts Related Primarily to PhySical Operation
andMt.inte~ceofthe Feature . . . . . . . . . . . . 54
a. Operation . . . . . . . . . . . . . . . . . . . . 55
b. Mt.intenance . . . . . . . . . . . . . . . . . . . 55
c. Quality of Water at the Pumping Plant . . . . . . 56
d. Salinity in the Colorado Hi ver . . . . . . . . . . 56
e. Water Quality (Salinity) Effect of Delivered
Water . . . . . . . . . . . . . . . . . . . . . . 57
f. Impact on the Flow of the Colorado River . . . . . 59