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Pre-Application Document Ochoco Irrigation District

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Pre-Application Document Ochoco Irrigation District Bowman Dam Hydroelectric Project (FERC No.14791) Pre-Application Document PRE-APPLICATION DOCUMENT OCHOCO IRRIGATION DISTRICT APPLICATION FOR LICENSE FOR MAJOR WATER POWER PROJECT UNDER 5 MEGAWATTS BOWMAN DAM HYDROELECTRIC PROJECT FERC No. P-14791 Prepared by: Ochoco Irrigation District 1 Bowman Dam Hydroelectric Project (FERC No.14791) Pre-Application Document BEFORE THE FEDERAL ENERGY REGULATORY COMMISSION APPLICATION FOR A MAJOR (5 MEGAWATTS OR LESS) WATER POWER PROJECT PRE-APPLICATION DOCUMENT TABLE OF CONTENTS LIST OF TABLES . 5 LIST OF FIGURES . 6 ACRONYMS AND ABBREVIATIONS . 9 SECTION 1.0 PROCESS PLAN AND SCHEDULE . 12 1.1 PROCESS PLAN AND SCHEDULE THROUGH FILING LICENSE APPLICATION . 12 1.2 INITIAL STATEMENT . 13 1.3 STATUTORY AND REGULATORY REQUIREMENTS . 15 1.3.1 Federal Power Act . 15 1.3.1.1 Section 18 Fishway Prescriptions . 15 1.3.1.2 Section 4(e) Conditions . 15 1.3.1.3 Section 10(j) State and Federal Fish and Wildlife Protection, Mitigation, or Enhancement Measures . 15 1.3.2 Clean Water Act . 16 1.3.3 Endangered Species Act . 16 1.3.4 Coastal Zone Management Act . 16 1.3.5 National Historic Preservation Act . 16 1.4 PUBLIC REVIEW AND COMMENT . 16 1.4.1 Scoping (To be provided following first stage consultation) 1.4.2 Interventions (To be provided following notice by FERC) 1.4.3 Comments on Application (To be provided following comment period on draft application) SECTION 2.0 PROJECT DESCRIPTION . 17 2.1 PROJECT LOCATION . 20 2.2 EXISITING FEATURES . 21 2.2.1 Dam . 21 2.2.2 Spillway . 22 2.2.3 Outlet Works . 22 2.2.4 Intake Structure . 22 2.2.5 Pressure Tunnel . 23 2.2.6 Gate Chamber . 23 2.2.7 Horseshoe Tunnel . 23 2.2.8 Stilling Basin . 23 2.3 NEW STRUCTURES . 23 2 Bowman Dam Hydroelectric Project (FERC No.14791) Pre-Application Document 2.3.1 Access . 23 2.3.2 Valve Chamber . 24 2.3.3 Penstock . 24 2.3.4 Powerhouse . 24 2.3.5 Tailrace . 24 2.3.6 Transmission Line . 25 2.3.7 Appurtenant Facilities . 25 2.3.8 Project Safety . 25 2.4 PROPOSED MODE OF OPERATION . 25 2.5 PURPOSE OF PROJECT . 25 2.6 NEED FOR POWER . 26 SECTION 3.0 DESCRIPTION OF EXISTING RESOURCES AND PROJECT EFFECTS . 26 3.1 GENERAL DESCRIPTION OF THE PROJECT AREA . 26 3.2 ENVIRONMENTAL SETTING . 28 3.2.1 Geology and Soils . 28 3.1.2.1 Existing Conditions . 28 3.1.2.2 Project Effects . 30 3.1.2.3 Protection, Mitigation, and Enhancement Measures . 30 3.2.2 Water Quantity . 31 3.2.2.1 Existing Conditions . 31 3.2.2.2 Project Effects . 36 3.2.3 Water Quality . 36 3.2.3.1 Existing Conditions . 36 3.2.3.2 Project Effects . 55 3.1.2.3 Protection, Mitigation, and Enhancement Measures . 55 3.2.4 Fishery Resources . 56 3.2.4.1 Existing Conditions . 56 3.2.4.2 Project Effects . 62 3.2.4.3 Protection, Mitigation, and Enhancement Measures . 62 3.2.5 Vegetation Cover . 62 3.2.5.1 Existing Conditions . 62 3.2.5.2 Project Effects . 71 3.2.5.3 Protection, Mitigation, and Enhancement Measures . 72 3.2.6 Wildlife Resources . 72 3.2.6.1 Existing Conditions . 72 3.2.6.2 Project Effects . 79 3.2.6.2 Protection, Mitigation, and Enhancement Measures . 79 3.2.7 Threatened and Endangered Species . 80 3.2.7.1 Existing Conditions . 80 3.2.7.2 Project Effects . 85 3.2.8 Land and Water Use . 85 3.2.8.1 Existing Condition . 85 3.2.8.2 Project Effects . 88 3.2.8.3 Protection, Mitigation, and Enhancement Measures . 88 3 Bowman Dam Hydroelectric Project (FERC No.14791) Pre-Application Document 3.2.9 Recreation Resources . 88 3.2.9.1 Existing Conditions . 88 3.2.9.2 Project Effects . 96 3.2.9.3 Protection, Mitigation, and Enhancement Measures . 96 3.2.10 Historical and Archaeological Resources . 96 3.2.10.1 Existing Conditions . 96 3.2.10.2 Project Effects . 96 3.2.10.3 Protection, Mitigation, and Enhancement Measures . 96 3.2.11 Visual and Aesthetic Resources . 97 3.2.11.1 Existing Conditions . 97 3.2.11.2 Project Effects . 102 3.2.11.3 Protection, Mitigation, and Enhancement Measures . 102 3.2.12 Socioeconomic Resources . 102 3.2.12.1 Existing Resources . 102 3.2.12.2 Project Effects . 102 3.2.12.3 Protection, Mitigation, and Enhancement Measures . 102 REFERENCES EXHIBIT G EXHIBIT F 4 Bowman Dam Hydroelectric Project (FERC No.14791) Pre-Application Document LIST OF TABLES Table 1: Summary of Precipitation in Prineville, Oregon – October 2011 through May 2012. (Source: Oregon Department of Agriculture) . 33 Table 2: Number of days of flows versus head over an average 365-day period. 34 Table 3: Metal concentrations in Prineville Reservoir 2001 through 2012. (Source: USDOI, 2013) . 47 Table 4: Predicted river flows where certain TDG levels are expected at the Bowman Dam Tailrace based on various linear regression models. 54 Table 5: A Listed Weeds (Oregon Department of Agriculture, 2017) . 68 Table 6: B Listed Weeds (Oregon Department of Agriculture, 2017) . 69 Table 7: Reptile and amphibian species detected within the study area and vicinity (From: Northwest Ecological Research Institute, 2013). 73 Table 8: Waterfowl species known to occur at Prineville Reservoir (From: U.S. Department of Interior, 2003) . 75 Table 9: Common birds in the RMP study area (source: U.S. Department of Interior, 2003). 76 Table 10: Rare and sensitive species occurring or potentially occurring in the Prineville Reservoir vicinity. (Source: U.S. Department of Interior, 2003) . ..
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