FCPP and Navajo Mine Energy Project, Final
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To do this, click on the image, Drawing Tools > Shape Fill > Picture. Once the image is placed in, you can set the images proportions by clicking on the picture, then selecting Picture Tools > Crop > Fit, then use the crop tool to set the image within the shape. Four Corners Power Plant and Navajo Mine Energy Project Biological Assessment Document Information Prepared for U.S. Department of the Interior Office of Surface Mining Reclamation and Enforcement Project Name Four Corners Power Plant and Navajo Mine Energy Project Final Biological Assessment Project Number 3371600100.0700 Consultation Tracking Number 02ENNM00-2014-SLI-0064 Project Manager Lawrence M. Wise, Jr., Senior Consultant / Aquatic Ecology Date August 8, 2014, USFWS Final Prepared for: Office of Surface Mining Reclamation and Enforcement, U.S. Department of Interior 1999 Broadway, Suite 3320, Denver, CO 80202-3050 Cooperating Agencies Bureau of Indian Affairs (BIA) U.S. Army Corps of Engineers (USACE) Bureau of Land Management (BLM) U.S. Environmental Protection Agency (USEPA) Hopi Tribe U.S. Fish and Wildlife Service (USFWS) Navajo Nation National Park Service (NPS) FCPP_NM_EP_BA_USFWS final_080814.docx Four Corners Power Plant and Navajo Mine Energy Project Biological Assessment Table of Contents Executive Summary ............................................................................................................... xiii Effects on Species ............................................................................................................................ xiv Effects on Designated Critical Habitat ............................................................................................. xvii 1 Introduction ...................................................................................................................1-1 1.1 Background....................................................................................................................... 1-1 1.1.1 Navajo Mine ...................................................................................................... 1-1 1.1.2 Four Corners Power Plant ................................................................................ 1-2 1.1.3 Determinations within this Biological Assessment ............................................ 1-5 1.2 Consultation History ......................................................................................................... 1-6 1.3 Species and Designated Critical Habitat .......................................................................... 1-9 2 Description of the Proposed Action .............................................................................2-1 2.1 Overview of the Proposed Action ..................................................................................... 2-1 2.2 Four Corners Power Plant ................................................................................................ 2-1 2.2.1 Installation of SCR Equipment on Units 4 and 5 ............................................... 2-2 2.3 Navajo Mine ...................................................................................................................... 2-3 2.4 Action Area ....................................................................................................................... 2-5 2.5 Specific Operations .......................................................................................................... 2-5 2.5.1 Navajo Mine ...................................................................................................... 2-5 2.5.2 Four Corners Power Plant: Current Operations as of December 2013 .......... 2-27 2.5.3 Transmission Lines ......................................................................................... 2-40 2.6 Conservation Measures .................................................................................................. 2-46 2.6.1 Navajo Mine .................................................................................................... 2-47 2.6.2 Four Corners Power Plant .............................................................................. 2-55 2.6.3 Transmission Lines ......................................................................................... 2-56 2.6.4 Development of Colorado Pikeminnow Population Viability Analysis Model .. 2-60 2.6.5 Support of the San Juan River Recovery Implementation Program ............... 2-60 3 Analytical Framework for the Effects Analysis ...........................................................3-1 3.1 Effects on Species ............................................................................................................ 3-1 3.2 Effects on Critical Habitat ................................................................................................. 3-1 4 Ecological Risk Assessments ......................................................................................4-1 4.1 Overview ........................................................................................................................... 4-1 4.2 Summary of the Models .................................................................................................... 4-2 4.2.1 Deposition Area ERA ........................................................................................ 4-2 4.2.2 EPRI Modeling .................................................................................................. 4-4 4.2.3 San Juan River ERA ......................................................................................... 4-5 4.2.4 Summary of Differences Between the Two ERAs ............................................ 4-6 4.3 Interpretation of ERA Findings Relative to Federally Listed Species ............................... 4-7 4.4 Summary of Toxicity Information for COPECs with HQs > 1 ........................................... 4-9 4.4.1 Fish Critical Body Residues .............................................................................. 4-9 4.4.2 Avian Toxicity Reference Values ...................................................................... 4-9 August 2014, USFWS Final Table of Contents i Four Corners Power Plant and Navajo Mine Energy Project Biological Assessment 4.4.3 Plant Toxicity Benchmarks .............................................................................. 4-10 4.5 Uncertainties in the Ecological Risk Assessments ......................................................... 4-10 5 Species Life History and Habitat ..................................................................................5-1 5.1 Colorado Pikeminnow ....................................................................................................... 5-1 5.1.1 Species Description .......................................................................................... 5-1 5.1.2 Life History ........................................................................................................ 5-2 5.1.3 Population Dynamics ........................................................................................ 5-3 5.1.4 Status and Distribution ...................................................................................... 5-3 5.1.5 Critical Habitat ................................................................................................... 5-5 5.1.6 Identified Threats .............................................................................................. 5-6 5.1.7 San Juan River Recovery Implementation Program ......................................... 5-7 5.2 Razorback Sucker ............................................................................................................ 5-8 5.2.1 Species Description .......................................................................................... 5-8 5.2.2 Life History ........................................................................................................ 5-8 5.2.3 Population Dynamics ........................................................................................ 5-9 5.2.4 Status and Distribution ...................................................................................... 5-9 5.2.5 Critical Habitat ................................................................................................. 5-11 5.2.6 Identified Threats ............................................................................................ 5-12 5.3 Southwestern Willow Flycatcher..................................................................................... 5-12 5.3.1 Species Description