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Cragin Watershed Protection Project Geologic Resources Report For the Final EA Prepared by: Polly Haessig Project Manager/IDT Leader, Geologist for: Coconino National Forest Date: March 13, 2017; revised December 27, 2017, revised April 20, 2018 In accordance with Federal civil rights law and U.S. Department of Agriculture (USDA) civil rights regulations and policies, the USDA, its Agencies, offices, and employees, and institutions participating in or administering USDA programs are prohibited from discriminating based on race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, family/parental status, income derived from a public assistance program, political beliefs, or reprisal or retaliation for prior civil rights activity, in any program or activity conducted or funded by USDA (not all bases apply to all programs). Remedies and complaint filing deadlines vary by program or incident. 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Table of Contents Introduction .............................................................................................................................................. 2 Relevant Laws, Regulations, and Policy .................................................................................................. 2 Federal Laws and Regulations .............................................................................................................. 2 Forest Service Manuals and Handbooks ............................................................................................... 2 Forest Plan Guidelines for Caves and Karst Resources ........................................................................ 4 Management Areas and Special Area Designations ................................................................................. 8 Topics and Issues Addressed in This Analysis ......................................................................................... 8 Purpose and Need ................................................................................................................................. 8 Proposed Action .................................................................................................................................... 8 Issues ..................................................................................................................................................... 8 Resource Indicators and Measures ........................................................................................................ 8 Methodology ............................................................................................................................................. 9 Incomplete and Unavailable Information............................................................................................ 10 Spatial and Temporal Context for Effects Analysis ............................................................................ 10 Affected Environment and Existing Conditions ..................................................................................... 10 Terminology ........................................................................................................................................ 10 Caves and Karst Terrain of the CWPP Area ....................................................................................... 12 Resource Protection Buffers ................................................................................................................... 15 Sites with Stream Buffers ................................................................................................................... 17 Environmental Consequences ................................................................................................................. 18 Alternative 1 – No Action ................................................................................................................... 18 Alternative 2 – Proposed Action ......................................................................................................... 18 Cumulative Effects .............................................................................................................................. 22 Summary of Effects ............................................................................................................................ 23 Compliance with LRMP and Other Relevant Laws, Regulations, Policies and Plans ........................... 24 References ................................................................................................................................................... 28 Education and Professional Experience ...................................................................................................... 28 List of Figures Figure 1. Generalized block diagram showing typical karst landscape in Kentucky and also found on the Coconino National Forest. Other types of karst features occur that are not illustrated. .................... 11 Figure 2. Karst and potential karst areas in the CWPP area consisting of carbonate karst and evaporate karst at or near the surface and at depth in the subsurface. ................................................................. 13 Figure 3. LiDAR imagery showing several examples of large sinkholes in karst terrain. .......................... 14 Figure 4. Two examples of karst features and their buffers. ....................................................................... 16 Figure 5. This is a graphical representation of karst protection buffers around a sinkhole. ....................... 16 Figure 6. The picture above is an example of a large sinkhole with a cave and another small sinkhole and associated protection buffers and AMZs............................................................................................. 17 List of Tables Table 1. 2017 Coconino Forest Plan Components for Caves and Karst ....................................................... 5 Table 2. Karst Type and Feature Type, CWPP .......................................................................................... 15 Table 3. Karst Protection Buffers ............................................................................................................... 15 Table 4. Design features to protect cave and karst features. ....................................................................... 19 1 Table 5. Comparison of Alternatives for Cave and Karst Resources.......................................................... 23 Table 6. How CWPP complies with laws, regulations, policy and the Forest Plan. ................................... 24 Introduction This report provides input for the Cragin Watershed Protection Project (CWPP) Final EA. The report and analysis follows guidance and direction in the current 2018 Land and Resource Management Plan for the Coconino National Forest (Forest Plan). The purpose of this report is to provide new information pertaining to caves and karst resources of the CWPP for the environmental documentation record and to provide guidance for resource protection of cave and karst resources for implementation of the CWPP project activities during thinning and prescribed burning activities. Definitions of geologic terms relating to caves and karst are found in the Affected Environment section of this report. Relevant Laws, Regulations, and Policy Federal Laws and Regulations Federal Cave Resources Protection Act of 1988, 16 U.S.C. 4301-4309. The act is to secure, protect and preserve significant caves on Federal lands for the perpetual use, enjoyment and benefit of all people and to foster increased cooperation and exchange of information between governmental authorities and those who utilize caves located on Federal lands for scientific, education, or recreational purposes. CFR Title 36: Parks, Forest and Public Property, Part 290 Cave Resources Management. June 17, 1994. These are the implementing regulations applying to cave management on National Forest System lands. These rules, in conjunction with rules in part 261 of this chapter, provide the basis for identifying and managing significant caves on National Forest System lands in accordance with the Act. National Forest System lands will be managed in a manner which, to the extent practical, protects and maintains significant cave resources in accordance with the policies outlined