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<br />.Q.D~753 <br /> <br />TABLE OF CONTENTS <br /> <br />Pa&e No. <br /> <br />2.3.3 Alternative C - Smaller Reservoir Expansion . . . . . . . . . . . . . . . . 2-17 <br />2.3.3.1 Background ................................. 2-17 <br />2.3.3.2 Reservoir Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17 <br />2.3.3.3 Environmental Consequences .................... 2-19 <br />2.3.3,4 Potential Mitigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19 <br />2,4 OPTIONS A V AILABLE TO TIIE FISH CREEK RESER VOIR <br />EXPANSION ALTERNATIVES ANALYZED IN DETAIL BY TIIE <br />FOREST SERVICE ....................................... 2-20 <br />2,4.1 Power Supply Options Considered. . . . . . . . . . . . . . . . . . . . . . . 2-20 <br />2,4.2 Campground Relocation Site Options . . . . . . . . . . . . . . . . . . . . . 2-22 <br />2,4.3 Service Road Options ................................ 2-22 <br /> <br />2.4.4 Borrow Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24 <br />2.4.4.1 Borrow Area A-1 ............................. 2-24 <br />2,4.4.2 Borrow Area A-2 ............................. 2-24 <br />2.4.4.3 Borrow Area B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25 <br />2.5 COMPARISON OF IMPACTS OF AL TERNA TIVES ANALYZED IN <br /> <br />DETAIL ............................................... 2-25 <br />2.6 IDENTIFICA nON OF TIIE PREFERRED AL TERNA TIVE ........ 2-25 <br />2.7 PROJECT ALTERNATIVES AVAILABLE TO TIIE APPLICANT.... 2-25 <br />2.7.1 Water Conservation ................................. 2-33 <br />2.7.1.1 Introduction................................. 2-33 <br />2.7.1.2 Background ................................. 2-33 <br />2.7.1.3 Methods of Water Conservation. . . . . . . . . . . . . . . . . . . 2-33 <br />2.7.1.4 Water Conservation Programs .................... 2-33 <br />2.7.1.5 Impacts of Conservation ........................ 2-36 <br />2.7.2 Infiltration Gallery Expansion .......................... 2-37 <br />2.7.2.1 General Description ........................... 2-37 <br />2.7.2.2 Impacts of the Infiltration Gallery Expansion. . . . . . . . . . 2-37 <br />2.7.3 Combination Alternative. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38 <br /> <br />2.7.3.1 General .................................... 2-38 <br />2.7.3.2 Conservation ................................ 2-38 <br />2.7.3.3 Infiltration Gallery Expansion .................... 2-38 <br />2.7.3.4 Fish Creek Reservoir Upgrade .................... 2-39 <br />2.7.3.5 Present Worth Analysis. . . . . . . . . . . . . . . . . . . . . . . . . 2-39 <br />2.7.3.6 Environmental Consequences of the Combination <br /> <br />Alternative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40 <br /> <br />CHAPTER 3 - AFFECTED ENVIRONMENT <br /> <br />3.1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 <br />3.2 DAM SAFETY/FLOOD HAZARD ............................3-1 <br /> <br />3.2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 <br />3.2.2 Existing Dam and Ancillary Structures ..................... 3-1 <br />3.2.2.1 Current Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 <br />3.2.2.2 Construction History ........................... 3-2 <br />3.2.3 Dam Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 <br />3.2.4 Safety Features ...................................... 3-4 <br /> <br />:-:<;:.~::;:;.:<.::~,.:.::;.;.: <..:.;.: ,.,': ~::.;;.;::.,,:-;:;.::.:.,~;:::;::.~ ;-.0::;::-:::'~>:::'1;~~ -..:;.x::.;.;:-:.s::::;:;~:;:;<<-,:->,~: ;:::w...':;x.::::;:w;:.x:,:::,:.;.:;:.:.,.;.;..;.::::-:..<<-~;:::,,~~:. .:-:'..s..;;:;:;.'/.._:-::-:,.<:~~:;.:-:<::";~...:<::::::.;..<:, :~:;.~:,:;:~:;.:..<::::...;;.:::",~:>..::~:. .:-:,'X~;,,: ~,;-: .,::;::::~.:::.,::;:,:,...,:,:::->:::.:~;-.;-..:: <br /> <br />September 1993 <br /> <br />Page iii <br />