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United States Department of Agriculture Forest Service Sucker Creek Legacy Roads and Trails Biological Evaluation (BE) for Threatened, Endangered, and Sensitive Plants, Lichen, and Fungi Wild Rivers Ranger District, Rogue River Siskiyou National Forest, Josephine County, Oregon PREPARED BY: /s/ Stuart Osbrack DATE: February 24, 2014 District Botanist Page 1 of 27 United States Department of Agriculture Forest Service SUMMARY OF FINDINGS There are four occurrences of the Rogue River-Siskiyou National Forest sensitive plant species Erythronium howellii (Howell’s fawn-lily), five occurrences of the Forest sensitive plant species Iliamna lactibracteata (California globe mallow), two occurrences of the Forest sensitive plant species Solanum parishii (Parish’s nightshade, one occurrence of the Forest sensitive plant species Lewisia leeana (Lee’s bitterroot), and one occurrence of the Forest sensitive plant species Phacelia leonis (Siskiyou phacelia). All occurrences were previously known from the project treatment area. Design criteria have been created for all Rogue River-Siskiyou National Forest (RRSNF) sensitive plant species within the proposed project treatment area to ensure that all occurrences would receive minimal or no negative impacts from the proposed project implementation. The five Forest Service sensitive plant species found within the footprint of the proposed project treatment area will be flagged and avoided to prevent any direct impacts to individuals. There are other FS sensitive botanical species and survey and manage species occurrences within the Sucker Creek Watershed. These occurrences, however, are not within proximity of the proposed project treatment analysis area, therefore there would be no effects and they are not considered or discussed further in this analysis. Invasive plants within the proposed treatment area will be discussed in the Sucker Creek Roads and Trails Invasive Plant Risk Assessment. INTRODUCTION The purpose of this Biological Evaluation is to document Forest Service programs or activities in sufficient detail to determine how an action or proposed action may affect any threatened, endangered, proposed, candidate, or sensitive species and their habitats (FSM 2670.5). FSM 2672.4 directs us to complete the biological evaluation for all Forest Service planned, funded, executed, or permitted programs and activities for possible effects on Federally listed threatened, endangered, proposed, candidate, or species listed as sensitive by the Pacific Southwest Regional Forester. Part of the biological evaluation is completed to determine whether a proposed action or any of the alternatives will result in a trend toward the sensitive species becoming federally listed. The goals of a BE are to: To ensure that Forest Service actions or funding of actions do not contribute to the loss of viability of any native or desired non-native plant or animal species; To ensure that Forest Service actions or funding of actions do not hasten the federal listing of any species; and To provide a process and standard through which TES species receive full consideration throughout the planning process, thereby reducing negative impacts to species and enhancing opportunities for mitigation. LOCATION The project area is in Josephine County, Oregon, located in the Sucker Creek and Grayback Creek Watersheds 8-10 miles east and southeast of Cave Junction, Oregon. Page 2 of 27 United States Department of Agriculture Forest Service The Legal Description is: Township 39 South, Range 6 West, T. 39 S. R. 5 W., T. 40 S., R. 6 W., T. 40 S., R. 5 W., and T. 41 S., R. 6 W., of the Willamette Meridian Page 3 of 27 United States Department of Agriculture Forest Service PURPOSE AND NEED The purpose of the Sucker Creek Legacy Roads and Trails project is to reduce the risk of National Forest System road-caused sediment delivery to streams in the 5th field Sucker Creek Watershed. In achieving this goal roads needed for management, special uses, recreation, and fire suppression and other emergency needs would be retained. The need for the project is to restore watershed health, fisheries habitat, and wildlife habitat in the Sucker Creek Watershed. PROJECT PROPOSAL The proposed action would: 1) stormproof 101 miles of road; 2) decommission 30 miles of road; 3) put 27 miles of road into storage; and 4) convert 3 miles of road to trail. The treatment elements are defined below: Stormproofing Roads to be stormproofed are currently needed and needed into the future. Stormproofing activities are a part of road maintenance and consist of improving road drainage to protect the road surface and upgrading stream crossings to reduce the risk of sediment delivery to stream channels during storm events. Stormproofing work may entail any or all of the following treatments: Apply rock aggregate or paving to the road surface where necessary Add rolling dips where feasible Upgrade stream crossing culverts to withstand 100-year peak flows and/or debris flows Construct dips at stream crossing that have a diversion potential Install downspouts Add ditch relief culverts Improve ditch line Fill in road ditch and outslope roads where feasible Where the ditch is hydrologic connect to a stream install a cross-drain to prevent ditch water from entering a stream channel Provide fish passage Road Decommissioning Road decommissioning is the physical treatment of a roadbed to restore the integrity of associated hillslopes, channels, and flood plains and their related hydrologic, geomorphic, and ecological processes and properties. The objectives of road decommissioning include: Page 4 of 27 United States Department of Agriculture Forest Service Reducing the risk of mass failures and subsequent impact on streams Protecting fish and fish habitat Restoring natural surface and subsurface drainage patterns Restoring vegetation and site productivity Restoring stream channels at road crossings Increasing road maintenance cost-effectiveness by concentrating available funds on roads needed for long-term access Restoring terrestrial habitat that has been invaded by vehicles and other human activities The primary goals of road decommissioning are to restore natural drainage patterns and infiltration capacity. Decommissioning a road involves one or more of the following restorative actions, dependent upon site specific evaluations and recommendations of resource specialists: Removing drainage structures including culverts and bridges Pulling back stream banks to natural channel slope Restoring out-slopes for drainage by placing waste on sub-grade to reestablish original ground lines Outsloping roads by pulling sub-grade material back toward the hillslope Constructing cross-drains and waterbars Scattering woody debris on road travel ways Subsoiling and/or ripping compacted road travel ways Seeding and/or planting road travel ways with native seed and vegetation (conifers, hardwoods, shrubs) Blocking road entrances with barriers Decommissioned roads are removed from the Forest Service transportation system once restorative actions have been implemented and closing barriers installed. Storage Some roads in the watershed were identified in the interdisciplinary process as not currently needed but needed within the next 10 years. Of these, roads that were identified as needed for reasonably foreseeable future resource management activities would be closed to vehicular traffic until needed, and changed in the Forest Service transportation system to custodial maintenance “level 1.” These roads would be closed for periods of one year or more. Page 5 of 27 United States Department of Agriculture Forest Service Objectives for Level 1 closed roads are to eliminate traffic and minimize resource impacts. Road surface deterioration may occur at this level. Management emphasis for these roads is on maintaining drainage facilities and runoff patterns. Closing roads under Level 1 custodial maintenance involves one or more of the following actions, dependent upon site specific evaluations and recommendations of resource specialists: Construct a dip in the fill at road stream crossings Fills and culverts would be removed and stored at the site for culvert stream crossing identified as having a high potential to fail and impact anadromous fish habitat and water quality Sub-soiling or ripping a portion of the compacted road travel way Constructing a series of cross-drains and or waterbars Blocking the road entrance with a barrier Conversion of Road to Non-Motorized Trail Several roads in the watershed were identified in the interdisciplinary process as not needed and proposed for decommissioning with part of the road template converted into a non-motorized trail to expand the existing trail system. FOREST SERVICE POLICY THREATENED & ENDANGERED SPECIES It is mandate that the Forest Service (FS) conduct its activities and programs to assist in the identification and recovery of threatened and endangered plant species and avoid actions which may cause a species to become threatened or endangered. The FS will not approve, fund or take any action that is likely to jeopardize the continued existence of threatened and endangered species or destroy any habitat necessary for their conservation unless exemption is granted pursuant to subsection 7(h) of the Endangered Species Act of 1973, as amended (FSM 2601.2). Federally Threatened, Endangered, and Proposed Species lists are based on the November 3, 2013 (accessed on February 20, 2014) USDI Fish and Wildlife Service (USFWS; http://www.fws.gov/oregonfwo/Species/)
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