WSP10595

• File Number: 8220.106
• Description: Animas-La Plata
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 1/1/2000
• Title: Draft Supplemental Environmental Impact Statement - Volume 1
• Water Supply Pro - Doc Type: EIS

t

-

TABLE OF CONTENTS (continued)

ChaDter

Pal!e No.

;,

3.14.3 Affected Environment. .. .. . . . . .. . .. .. .. . . ... .. . . . ... . .. . . .. . . . . 3-221
3.14.3.1 Structural Components of Refined Alternative 4 . . . . . . . . . . . . . 3-221
3.14.3.1.1 Durango Pumping Plant and Ridges Basin Inlet

Conduit ................................. 3-22 I
3.14.3.1.2 Ridges Basin Dam and Reservoir .............3-222
3.14.3.1.3 Navajo Nation Municipal Pipeline ............ 3-222
3.14.3.2 Structural Components of Refined Alternative 6 . . . . . . . . . . . . . 3-222
3.14.3.2.1 Increased Capacity of Lemon Reservoir...... ..3-222
3.14.3.2.2 Navajo Nation Municipal Pipeline ............3-222
3.14.3.3 Non-Binding End Uses and Conveyance Systems. . . . . . . . . . . . 3-222
3.14.4 Environmental Consequences and Mitigation .......................3-223
3.14.4.1 Refined Alternative 4 . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 3-223
3.14.4.1.1 Structural Component hnpacts ...............3-223
3.14.4.1.2 Non-Binding Water End Use Impacts..... .. . ..3-225
3.14.4.2 Refined Alternative 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-226
3.14.4.2.1 Structural Components ..................... 3-226
3.14.4.2.2 Non-Binding Water End Uses and Conveyance.. 3-226
3.14.4.3 No Action Alternative ................................. 3-226
3.15 TRANSPORTATION................................................ 3-227
3.15.1 Introduction.................................................. 3-227
3.15.2 Methodology................................................. 3-227
3.15.2.1 Construction hnpacts Evaluation. . ..... .. ... . . ........ . ..3-227
3.15.2.2 Recreation Operation and Maintenance Impacts Evaluation. . . . 3-229
3.15.2.3 Significance Criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-229
3.15.3 Affected Environment. . . . . . . . . . . . . . . . . . . . . . .. .. . . . . . . . . . . . . . . . . 3-230
3.15.3.1 Federal Highways..................................... 3-230
3.15.3.2 State Routes .........................................3-230
3.15.3.3 County Roads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 3-230
3.15.3.3.1 County Road 125..........................3-231
3.15.3.3.2 County Road 141..........................3-231
3.15.3.3.3 County Road 211 ..........................3-231
3.15.3.3.4 County Road 212 ..........................3-231
3.15.3.3.5 County Road 213 . . . .. . . . . . . . . . . . . . . . . . . . . . 3-231
3.15.4 Environmental Consequences and Mitigation ....................... 3-232
3.15.4.1 RefmedAlternative4.................................. 3-232
3.15.4.2 Refined Alternative 6 ..................................3-238
3.15.4.2.1 Structural Components .....................3-238
3.15.4.3 No Action Alternative ................................. 3-239

3.16 AIR QUALITY ..................................................... 3-240
3.16.1 Introduction.................................................. 3-240
3.16.2 Methodology................................................. 3-240
3.16.2.1 Evaluation Methodology ............................... 3-240
3.16.2.2 Significance Criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-240
3.16.3 Affected Environment.. ... .... . . .. . . . . . . . ..... .... . ... . ...... ..3-241
3.16.3.1 Climate............................................. 3-241
3.16.3.2 Local Ambient Air Quality ..............................3-241
3.16.3.3 Regional Ambient Air Quality.. . . . ......... .... . .. .. ....3-242
3.16.4 Environmental Consequences and Mitigation ....................... 3-243
3.16.4.1 Refined Alternative 4 . . . . .. ... . . . ........ . . .. ........ .. 3-243

1:
~
I

t:,';
i" .
#''i '
,t,
~f. '
'i
1.,4
I~
~

XIV