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TABLE OF CONTENTS(continued) <br /> Chapter Page.No. <br /> 2.4.1.1 Water Conservation Through Irrigation System Improvement 2-93 <br /> 2.4.1.2 Raising of Vallecito and McPhee Dams 2-93 <br /> 2.4.1.3 Availability of Unused Water in McPhee Reservoir and <br /> Vallecito Reservoir 2-94 <br /> 2.4.2 Structural Components Eliminated 2-94 <br /> 2.4.2.1 Howardsville Dam Site 2-94 <br /> 2.4.2.2 Purgatory Dam Site 2-95 <br /> 2.4.2.3 Teft Diversion Site 2-95 <br /> 2.4.2.4 Bondad Dam Site 2-95 <br /> 2.4.2.5 Cedar Hill Dam Site 2-95 <br /> 2.4.2.6 Aztec Dam Site 2-95 <br /> 2.5 DESCRIPTION OF ALTERNATIVES SELECTED FOR FURTHER <br /> REFINEMENT 2-96 <br /> 2.5.1 Description of Refined Alternative 4 2-96 <br /> 2.5.1.1 Water Supply of Refined Alternative 4 2-98 <br /> 2.5.1.1.1 Source and Amount of Water Supply 2-98 <br /> 2.5.1.1.2 Depletion of San Juan River Basin Water Supply 2-98 <br /> 2.5.1.2 Operational Requirements of Refined Alternative 4 2-101 <br /> 2.5.1.2.1 Project Operation 2-101 <br /> 2.5.1.2.2 Project Power 2-101 <br /> 2.5.1.2.3 San Juan River Basin Recovery Implementation <br /> Program 2-101 <br /> 2.5.1.2.4 Filling Period of Ridges Basin Reservoir 2-102 <br /> 2.5.1.3 Structural Components and Associated Features of Refined <br /> Alternative 4 2-102 <br /> 2.5.1.3.1 Ridges Basin Dam and Reservoir 2-102 <br /> 2.5.1.3.2 Durango Pumping Plant 2-106 <br /> 2.5.1.3.3 Ridges Basin Inlet Conduit 2-109 <br /> 2.5.1.3.4 Navajo Nation Municipal Pipeline 2-110 I <br /> 2.5.1.3.5 Electrical Transmission Lines 2-110 <br /> 2.5.1.3.6 Ridges Basin Reservoir Conservation Pool for <br /> Water Quality and Recreation 2-110 <br /> 2.5.1.3.7 Utility and Transportation Relocations 2-111 <br /> 2.5.1.3.8 Cultural Resources Mitigation 2-115 <br /> 2.5.1.3.9 Wetlands,Fish and Wildlife Mitigation 2-115 <br /> 2.5.1.4 Description of Non-Structural Component of Refined <br /> Alternative 4 2-116 <br /> 2.5.1.4.1 Time Frame for Purchase of Water Rights 2-116 <br /> 2.5.1.4.2 Procedure for Determining Land to be Purchased 2-116 I <br /> 2.5.1.4.3 Amount of Land Purchased in Various River <br /> Basins 2-117 <br /> 2.5.1.5 Conveyance Options for Refined Alternative 4 to Deliver <br /> Municipal and Industrial Water to Future Non-Binding End <br /> Uses 2-117 <br /> 2.5.1.6 Total Costs and Development Program for Refined <br /> Alternative 4 2-123 <br /> 2.5.1.6.1 Costs for Refined Alternative 4 2-123 <br /> 2.5.1.6.1.1 Capital Costs 2-123 <br /> 2.5.1.6.1.2 Annual Operating Costs 2-125 <br /> v <br />