Botany and Wetlands Study Report - McMillen, LLC

Botany and Wetlands Study ReportSwan Lake Expansion Project(FERC Project No. 2911)January 2013Ketchikan, AlaskaPrepared by:Kathryn Beck, BotanistBeck Botanical Services, andKaren Brimacombe, EcologistTetra TechBothell, WashingtonandMcMillen, LLCBoise, Idaho

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTABLE OF CONTENTS1 Introduction ........................................................................................................... 11.1 Project Description .......................................................................................................... 11.2 Purposes of the 2012 Environmental Field Program ....................................................... 11.3 Changes Made to the Study Plan in Response to Comments or Permit Conditions ....... 31.4 Compliance with Permit Terms, Conditions, and Regulatory Framework ...................... 31.4.1 Tongass Land and Resource Management Plan ............................................ 31.4.2 Clean Water Act ............................................................................................ 51.4.3 Other Regulations ......................................................................................... 52 Procedures ............................................................................................................. 62.1 Analysis Area ................................................................................................................... 62.2 Pre‐Field Contact with Forest Service and Review of Existing Information .................... 62.3 Field Investigation Surveys .............................................................................................. 72.3.1 Sensitive and Rare Plants .............................................................................. 72.3.2 Wetland Resources ....................................................................................... 73 Environmental Setting ........................................................................................... 83.1 Vegetation Resources ...................................................................................................... 83.2 Sensitive Plants ................................................................................................................ 93.3 Rare Plants ....................................................................................................................... 93.4 Plant Species Newly Documented in Alaska .................................................................. 123.5 General Vegetation Types ............................................................................................. 123.6 Invasive Plants ............................................................................................................... 143.7 Wetland Resources ........................................................................................................ 143.7.1 Forested Wetlands ...................................................................................... 163.7.2 Emergent Sedge Wetlands .......................................................................... 163.7.3 Moss Muskegs ............................................................................................. 164 Project Effects ...................................................................................................... 174.1 Identified Issues and Concerns for Sensitive Plants ...................................................... 174.1.1 Spatulate moonwort (Botrychium spathulatum W.H.Wagner) ................ 18Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page i Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency4.1.2 Edible thistle (Cirsium edule var. macounii (Greene) D.J.Keil) .................... 184.1.3 Mountain lady’s slipper (Cypripedium montanum Douglas ex Lindl.) ........ 184.1.4 Large Yellow Lady’s Slipper Orchid (Cypripedium parviflorum Salisb. var.pubescens (Willdenow) O. W. Knight) ......................................................... 194.1.5 Calder’s lovage (Ligusticum calderi Math. & Const.) .................................. 194.1.6 Alaska Rein Orchid (Piperia unalascensis (Spreng.) Rydb.) ......................... 194.1.7 Lesser Round‐Leaved Orchid (Platanthera orbiculata (Pursh) Lindl.) ......... 204.1.8 Kruckeberg’s swordfern (Polystichum kruckebergii W.H. Wagner) ........... 204.2 Identified Issues and Concerns for Rare Plants ............................................................. 214.2.1 Maidenhair spleenwort (Asplenium trichomanes L. ssp. trichomanes) ...... 214.2.2 Brightgreen spleenwort (Asplenium trichomanes‐ramosum L.) ................. 214.2.3 Boreal bedstraw (Galium kamtschaticum Steller ex Schult & Schult) ........ 224.2.4 Northern bugleweed (Lycopus uniflorus Michx.) ........................................ 224.2.5 Bog adder’s‐mouth orchid (Malaxis paludosa (L.) Swartz) ......................... 234.2.6 Choris’ bog‐orchid (Platanthera chorisiana (Cham.) Reichenb.) ................ 244.2.7 Pacific Buttercup (Ranunculus pacificus (Hulten) L.D.Benson) ................... 244.3 Identified Issues and Concern for Plants Newly Documented in Alaska ....................... 254.3.1 Wallace’s spikemoss (Selaginella wallacei Heiron.) .................................... 254.3.2 Bog St. John’s‐wort (Hypericum anagalloides Cham. & Schltdl.) ................ 264.4 Management Requirements and Mitigation Measures for Sensitive and Rare Plants . 264.5 Identified Issues and Concerns for General Vegetation ................................................ 274.5.1 Old‐Growth Forest ...................................................................................... 274.5.2 Young Growth Forest .................................................................................. 284.6 Management Requirements and Mitigation Measures for General Vegetation .......... 284.7 Identified Issues and Concerns to Wetland Resources ................................................. 284.7.1 Effects from Rising Reservoir Levels Within the Analysis Area ................... 294.7.2 Effects from Construction Activities Outside the Analysis Area ................. 294.8 Management Requirements and Mitigation Measures for Wetland Resources .......... 305 References ........................................................................................................... 30Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page ii Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency1 INTRODUCTION1.1 Project DescriptionThe Southeast Alaska Power Agency (SEAPA) owns and operates the Swan Lake Project, FederalEnergy Regulatory (FERC) No. 2911 (Project), on the northeast side of Carroll Inlet in SoutheastAlaska. SEAPA is currently evaluating the engineering feasibility and value of increasing thestorage capacity of the Swan Lake reservoir through an increase in the dam height. Around thereservoir, the FERC boundary roughly follows the 350‐foot elevation contour on the Projectdrawings. SEAPA is planning a 15‐foot raise in full pool elevation; dam crest elevation wouldincrease from an elevation of 344 feet to 350 feet to accommodate a new Probable MaximumFlood (PMF) of 347 feet. The normal maximum surface area of the reservoir would increase from330 feet to 345 feet. It is estimated that there are about 14 miles of shoreline around thereservoir, much of which is moderately to extremely steep (Figure 1). The Project is located inSections 11, 12, 13, 14, 15, 20, 21, 22, 23, and 27, Township 29 North, Range 91 East, CopperRiver Meridian. A portion of the proposed reservoir expansion area may include National ForestService lands, particularly in the area of Lost Creek, a tributary that enters the existing reservoiron the northeast side.The Project’s FERC license sets the Project’s boundary around the reservoir at the 350‐footelevation contour. As currently proposed, the increased reservoir will be entirely contained withinthe existing boundary; but it’s possible that a revision of this boundary may be necessary to allowfor operation and maintenance of the Project and to accommodate other Project purposes such asrecreation, shoreline control, or protection of environmental resources. Any proposed changes tothe facilities, the operation of the reservoir, and potential changes to the Project boundary willrequire amending the Project’s FERC license, a process that includes evaluating the potentialimpacts to environmental resources from the proposed action. Two alternatives are evaluated inthis report, No Action, as required under the National Environmental Policy Act (NEPA), and theProposed Action. The Swan Lake Expansion Project Botany and Wetlands Study Report provides anassessment of the current condition of botanical and wetland resources in the analysis area andthe potential effects of implementing the proposed alternatives on these resources. The analysisaddresses the potential effects associated with construction and operation of the proposedProject. The following analysis uses existing information from spatial GIS data, field survey results,scientific literature, and other sources, as appropriate.1.2 Purposes of the 2012 Environmental Field ProgramThe purpose of the 2012 environmental field program was to collect baseline environmentalinformation and to evaluate the potential for impacts to environmental resources resulting fromthe proposed 15‐foot increase in pool elevation and construction of the elevated dam. Resultsof these studies will help inform discussions about the necessary range of environmentalanalyses to support the FERC amendment process. Potential areas of environmental concerninclude potential impacts from the proposed action on (1) the fish and aquatic community andassociated habitat, and (2) terrestrial vegetation and wildlife and features such as soils andcultural resources.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 1 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyFigure 1. Project VicinitySwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 2 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency1.3 Changes Made to the Study Plan in Response to Comments or PermitConditionsNo changes were made to the pre‐field study plan in response to permit conditions.1.4 Compliance with Permit Terms, Conditions, and RegulatoryFrameworkManagement activities on National Forest System (NFS) lands are required to comply with theTongass Land and Resource Management Plan (Forest Plan) and federal and state laws. Relevantstandards and regulations intended to protect botanical and wetland resources are summarizedin the subsections below.1.4.1 Tongass Land and Resource Management PlanThe Forest Plan is the governing document for management activities that take place within theTongass National Forest (Forest Service 2008). It consists of three parts that work together tofacilitate the development of management activities. These parts include: forest goals anddesired conditions for resources; the management prescriptions for each of the 19 land usedesignations (LUDs); and the Forest‐wide Standards and Guidelines, which apply to all or mostareas of the Forest and provide for the protection and management of forest resources.1.4.1.1 Sensitive and Rare PlantsStandards and Guidelines direct the Forest Service to “Avoid, minimize, or mitigate adverseeffects to rare plants and populations during project planning to maintain known distributionsthroughout the Tongass National Forest.”A sensitive plant is one that is included on the 2009 Forest Service Alaska Region SensitiveSpecies List (Appendix A).A rare plant on the Tongass National Forest is defined as a plant species that:is on the Alaska Natural Heritage Program (AKNHP) Rare Vascular Plant Tracking List(AKNHP 2012) and is known or suspected to occur on the Tongass, is considered S1 or S2in State ranking (some S3s are considered), and is not yet on the sensitive plant list forthe Tongass.is proposed upon consultation and agreement among Tongass ecologists, Districtbotanists, and the Region 10 botanist because of rarity on the Tongass (i.e., plants withrange edges or disjunct populations on the Tongass but that have not yet been given astate ranking on the AKNHP list).has population viability concerns on the Tongass, but is not yet on the sensitive plant list.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 3 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agencyhas been or is being raised as an issue because of rarity or conservation concerns(through the NEPA process).The list of rare plants is dynamic; plants may be dropped when they are found to be moreabundant than previously thought, or added if they are newly found in the state or Forest.Plants may also be added or dropped as their taxonomic status changes. Generally, the Tongasslist is based on the AKNHP rare plant tracking list. The Forest Service and other agenciescontribute rare plant occurrence information to the AKNHP for database inclusion. The plantsconsidered sensitive on the Tongass are also on the AKNHP rare plant tracking list. SeeAppendix B for the updated 2012 AKNHP rare plant list.Each rare plant in the AKNHP tracking list has a state ranking (S1 to S5) as well as a global ranking(G1 to G5). An S1 (G1) rank is defined as the most critically imperiled plants in the state (andworld), while an S5 (G5) is secure in the state (and world) (AKNHP 2012). AKNHP rankings areshown at the end of Appendix B. The AKNHP plant tracking list changes as previously unknownpopulations of rare plants are discovered or when taxa new to Alaska are discovered.1.4.1.2 Wetland ResourcesForest‐wide Standards and Guidelines for wetlands that apply and provide for resourceprotection across the Forest (Forest Service 2008, Chapter 4). Forest‐wide standards andguidelines for wetlands include the following (Forest Service 2008, p. 4‐88):Wetlands: WETIII.Land Use ActivitiesA. The discharge of dredged or fill material onto wetlands is regulated under Section 404of the Clean Water Act, which is administered by the U.S. Army Corps of Engineers (Corps)and U.S. Environmental Protection Agency (EPA). Certain categories of activities areexempt from regulation, while others may be permitted (refer to 33 Code of FederalRegulations [CFR] 323.4 Part 330 Appendix A 325). Consult with the Corps early in theplanning process to determine whether a 404 permit is required. For non‐exemptactivities, permit requirements may include compensation or replacement of any lostaquatic function.B. Consistent with the Clean Water Act, as amended, use Best Management Practices(BMPs) in all management activities that could affect water quality of wetlands. BMPs areintended to ensure that flow and circulation patterns, as well as chemical and biologicalcharacteristics of water are not impaired. (Forest Service Handbook [FSH] 2509.22, BMP12.5)C. Before issuing authorizations, leases, easements, rights‐of‐way, or exchanging landscontaining wetlands, identify uses that are restricted under identified Federal, state, orlocal wetlands regulations. Incorporate appropriate restrictions, where necessary, toprotect or minimize wetland impacts, or withhold such properties from exchange.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 4 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyD. Cooperate with state and Federal agencies having overlapping resource managementresponsibilities for wetlands, including the Alaska Department of Fish and Game, AlaskaDepartment of Environmental Conservation, Alaska Department of Natural Resources,Corps, EPA, National Marine Fisheries Service, and the U.S. Fish and Wildlife Service.E. Mitigate to minimize impacts caused by activities when BMPs do not perform asexpected.G. When decommissioning roads through wetlands, restore natural drainage patterns.H. Timber harvest may occur on forested wetlands that meet suitable criteria and are indevelopment LUDs.1.4.2 Clean Water ActDischarges of dredged or fill material into wetlands are regulated through Section 404 of theClean Water Act by the Corps and the United States Environmental Protection Agency (EPA). TheCorps and EPA regulate wetlands on private, state, and federal land.Under Section 404, the Corps issues a number of nationwide permits for different types ofactivities that result in minimal individual and cumulative adverse effects on the aquaticenvironment. Permanent wetland losses greater than 0.5 acre or stream impacts greater than300 linear feet require an individual permit.1.4.3 Other RegulationsOther applicable regulations include the following:The National Forest Management Act of 1976 (NFMA) states that forest planning must“provide for the diversity of plant and animal communities based on the suitability andcapability of the specific land area” (Forest Service 1976).USDA Departmental Regulations 9500‐004 states that the National Forest will providehabitats for all existing native and desired non‐native plants, fish and wildlife species tomaintain at least a viable population of such species (USDA 1983).36 Code of Federal Regulations (CFR) 219.19 (2000) states “For planning purposes, aviable population shall be regarded as one which has the estimated numbers anddistribution of reproductive individuals to insure its continued existence is welldistributed in the planning area. In order to insure that viable populations will bemaintained, habitat must be provided to support, at least, a minimum number ofreproductive individuals and that habitat must be well distributed so that thoseindividuals can interact with others in the planning area.”Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 5 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency2 PROCEDURES2.1 Analysis AreaThe study area for direct and indirect effects to sensitive and rare plants, general vegetationcommunities, and wetland resources includes the “activity area” (FSM 2554). For this project,the “activity area” is between the current spillway crest elevation (330 feet) and the proposednew dam crest elevation of350 feet (3 feet of freeboard above the PMF of 347 feet). It isestimated that there are about 14 miles of the Swan Lake reservoir shoreline at the 350‐footelevation contour; including portions of Lost Creek, Track Creek, Mint Creek, and Fry Creek. Theanalysis area is approximately 140.3 acres.Additional surveys for sensitive and rare plants, general vegetation communities, and wetlandresources were conducted outside of the activity area. This area included a 150‐foot bufferaround areas where temporary and permanent construction activities (e.g., laydown yards,existing road improvements) associated with the proposed project would likely occur. This areais located below the dam and near existing facilities.2.2 Pre‐Field Contact with Forest Service and Review of ExistingInformationPrior to field surveys, a pre‐field review of the analysis area was conducted (Tetra Tech 2012a)and approved by Rick Turner, USDA Forest Service Ecologist. No species on the Alaska RegionSensitive Plant List have previously been documented in the analysis area although severalspecies have previously been documented in the Ketchikan‐Misty Fiords Ranger District.Habitat information in the analysis area was assessed based on information obtained from GIS,reviews of aerial photographs, and discussions with resource specialists. Habitat types likely tooccur in the analysis area include forest edge, coniferous forest, rocky areas, rock outcrops,ridgetops, cliffs, gravel, seeps, wet areas, riparian areas, streambanks, ponds, shallow freshwatermarshes, muskeg, waterfalls, lake margins, fens, and sandy areas. Based on the variety ofhabitats present, it was determined that eight of the sensitive species on the Alaska RegionSensitive Plant List (Appendix A) have a reasonable potential to occur in the analysis area.The data reviewed for wetland resources in the analysis area was based on the Tongass NationalForest wetland mapping layer. This GIS mapping layer has been modified from the NationalWetland Inventory (NWI) maps, through the inclusion of the common wetland types present inSoutheast Alaska. Additionally, the Ketchikan Area soil survey for the Tongass NF area wasreviewed to determine the potential location of hydric soils within the analysis area.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 6 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency2.3 Field Investigation SurveysField surveys for botanical and wetland resources were conducted in the analysis area fromAugust 6‐10, 2012. Field surveys included the shoreline of Swan Lake and along the banks of LostCreek up to the 350‐foot elevation level. Surveys were dispersed throughout the analysis area ina variety of habitat types, elevations and aspects. The surveys were done primarily by boatbecause steep terrain and dense vegetation restricted the ability to survey the majority of theshoreline on foot (see Appendix C, Swan Lake Project Area Photos). The boat traveled close tothe shore and binoculars were used to search the shore. At the time of the survey, the waterlevel was at its current maximum height of 330 feet, giving surveyors an optimal view. Botanistsand ecologists walked the shoreline and creek margins in the limited areas where slope andvegetation density allowed.2.3.1 Sensitive and Rare PlantsFocused intuitive controlled surveys for sensitive and rare plants were conducted within theanalysis area (see Appendix D for a general description of botanical survey types). This surveytype involves identifying suitable habitat for targeted species and then focusing the survey effortwithin those identified habitats. The field surveys were conducted from August 6 to 10, 2012, anappropriate time of year to identify targeted species.No populations of sensitive plant species were identified in the analysis area during field surveys.Populations of two rare plant species were identified and mapped as a result of field surveys forthis project. Additionally, two plant species not included on the 2012 AKNHP Rare Vascular PlantList but considered species of interest for the Tongass National Forest were observed in theanalysis area (see Section 3.3). Based on field surveys, the location of each population wasmapped and digitized and a plant count or estimate was made for each. Plant Survey Field formsand a spreadsheet identifying all plant species observed in the analysis area were also preparedand are included in the project record. Additionally, Region 10 (R10) Threatened and EndangeredSpecies (TES) Plant Element Occurrence field forms were completed according to protocol forthe Alaska Region for rare plants in the analysis area and are included in Appendix E.2.3.2 Wetland ResourcesSeveral wetland types were observed during field surveys. These include forested wetlands,emergent wetlands, and moss muskegs (Appendix C, Swan Lake Project Area Photos). Wetlandresources were mapped, to the extent possible, using a Trimble GeoXH global positioning systemunit (GPS). Wetlands that could not be mapped using GPS were hand‐delineated on aerial mapsusing the Tongass NF wetland layers and hydric soils layers from the Ketchikan area soil surveyfor the Tongass NF to help refine the boundaries.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 7 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency3 ENVIRONMENTAL SETTINGThe Tongass National Forest, including Revillagigedo Island, is dominated by temperaterainforest. The maritime climate is characterized by cool, wet summers and mild winters withsignificant precipitation as snow and rainfall. In Ketchikan, approximately 23 miles southwest ofthe study area, typical summer temperatures average 60‐65° F, while winter temperaturesaverage 39‐44°F. The year‐round average temperature is 51.6° F. Annual precipitation as rainfallaverages 117 inches, with the least precipitation (16 percent) occurring from May through July.The wettest month is October with an average of more than 22 inches accumulation. Snowfallaccumulation averages 37 inches per year, with the most snow accumulating in January (35percent) (Western Regional Climate Center 2012). The study area lies about 300 to 350 feethigher in elevation than Ketchikan.Southeast Alaska is geologically composed of linear belts of tectonic assemblages that liesub‐parallel to, and have been accreted to, the continental margin. This coastal group ofmountainous islands lies west of the mainland coast range. This area has been subjected toisostatic and tectonic uplift, as well as glacial and other climatic weathering processes (ForestService 1996). Bedrock in the project area is made up of the Taku terrane and includes“metamorphosed marine shales and muddy sandstones, metamorphosed andesites, basalts, andrhyolite lavas, along with small amounts of limestone, marble, and conglomerate” (Connor andO’Haire 1988:10). Many of the lakes, valleys, and mountains in and around the project area arethe result of more recent glaciation.3.1 Vegetation ResourcesThe Swan Lake Expansion analysis area is located on the Ketchikan‐Misty Fiords Ranger Districton Revillagigedo Island in southeast Alaska, 22 miles northeast of Ketchikan. The TongassNational Forest, including Revillagigedo Island, is covered primarily by temperate rainforestconsisting of Sitka spruce (Picea sitchensis) and western hemlock (Tsuga heterophylla), withlesser amounts of mountain hemlock (Tsuga mertensiana), Alaska yellow cedar (Callitropsis[Chamaecyparis] nootkatensis), and lodgepole pine (Pinus contorta). Common understoryspecies include oval‐leaf blueberry (Vaccinium ovalifolium), Alaska blueberry, (Vacciniumalaskanse), Devil’s club (Oploplanax horridum), thimbleberry (Rubus parviflorus), salmonberry(Rubus spectabilis), twisted‐stalk (Streptopus spp.), queen’s cup (Clintonia uniflora), three‐leaffoamflower (Tiarella trifoliata), and lady fern (Athyrium filix‐femina).Red alder (Alnus rubra) and Sitka alder (Alnus viridis ssp. sinuata) occupy riparian areas andother sites, such as avalanche chutes, where bare mineral soils are exposed. On RevillagigedoIsland, extensive forest areas have been logged. Plant communities in these areas have changedto early successional types that differ in character than old growth forests. Regeneration is rapidand most of the logged areas are covered by dense stands of young growth.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 8 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyAs described above, the project analysis area includes a narrow perimeter of land around SwanLake and a stretch approximately 0.8 mile along Lost Creek extending up the banks to anelevation of 350 feet. Most of the lake perimeter, including the banks of the four main creeksentering the lake, is characterized by very steep forested slopes. Rock outcrops, avalanchechutes, and waterfalls also occur along the lake perimeter (Appendix C). The vegetation growingon the steep slopes is primarily coniferous forest with a dense shrub understory. Shrublands andareas of herbaceous vegetation typically occur in or adjacent to avalanche chutes and waterfalls.In addition to forest and shrublands, there is a riparian vegetation community associated withLost Creek. Various wetland types are also found dispersed throughout the analysis area (seeSection 4.2 below). Plant communities in the analysis area are largely unaltered by humanactivity.3.2 Sensitive PlantsA total of 18 plant species and one lichen have been designated as Sensitive on the AlaskaRegional Forester’s list; 16 of these are known or suspected to occur on the Tongass NationalForest (Appendix A). Of the species with habitats similar to those present within the Swan LakeExpansion analysis area, three of these species have been documented on the Ketchikan‐MistyFiords Ranger District. The Ketchikan‐Misty Fiords Ranger District is also within the potentialrange of an additional five species, which are suspected to occur on the District. Table 1summarizes the general habitat requirements of the eight plant species that are either known tooccur or suspected to occur on the Ketchikan‐Misty Fiords Ranger District and for whichpotential habitat may be present within the analysis area. No populations of sensitive specieswere located during surveys of the analysis area.3.3 Rare PlantsThe target rare plant species list for this project is the AKNHP 2012 Rare Vascular Plant List(Appendix B). The list includes species with a State Ranking of S1, S2, and S3. As noted earlier,the list changes periodically with plants added or dropped as additional information on plantviability, distribution, and taxonomy is learned. Even though boreal bedstraw (Galiumkamtschaticum), broadlipped twayblade (Listera convallarioides) and Choris’ bog‐orchid(Platanthera chorisiana) are not included on the 2012 AKNHP Rare Vascular Plant List, they areconsidered species of interest for the Tongass National Forest.Populations of two rare plant species: northern bugleweed (Lycopus uniflorus) and Pacificbuttercup (Ranunculus pacificus), were found during surveys within the analysis area (Figure 2;Table 2). Additionally, populations of five plant species: boreal bedstraw (Galiumkamtschaticum), Choris’ bog‐orchid (Platanthera chorisiana), maidenhair spleenwort (Aspleniumtrichomanes ssp. trichomanes), brightgreen spleenwort (Asplenium trichomanes‐ramosum), andbog adder’s‐mouth orchid (Malaxis paludosa) that were on the AKNHP 2008 Rare Vascular PlantList (AKNHP 2008) but were subsequently removed were found in the analysis area or as noted,just outside of the analysis area (Table 2).Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 9 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable 1. Known or Suspected Sensitive Plants in the Ketchikan‐Misty Fiords Ranger DistrictScientific Name Common Name Presence 1/ HabitatBotrychium spathulatum Spatulate moonwort Suspected Maritime and upper beach meadows,well drained open areas, limestone,alpine habitats, disturbed areasCirsium edule var. macounii Edible thistle Known Moist to mesic meadows, open forests,talus slopes, in subalpine to alpine areasCypripedium montanum Mountain lady’s slipper Suspected Open forest, beach meadows, peatlands,wet meadowsCypripedium parviflorum var.pubescensLarge yellow lady’sslipperSuspected Peatlands, occ. on limestone substrates,open forested habitats, dry meadowsLigusticum calderi Calder’s lovage Suspected Limestone, wet to moist sites in thesubalpine and alpine, rock habitatsPiperia unalascensis Alaska rein orchid Suspected Forested areas, dry to mesic meadows,roadsides and forest/ muskeg edges,streamsidesPlatanthera orbiculataLesser round-leavedorchidKnownA variety of habitats, most commonly inforested habitats and along the forestedmuskeg edge. Found in both old andyoung growth.Polystichum kruckebergii Kruckeberg’s swordfern Known Sheltered cracks in ultramafic outcrops1/ Known -- known to occur in the Ketchikan-Misty Fiords Ranger District.Suspected -- suspected to occur in the Ketchikan-Misty Fiords Ranger District.Table 2. Rare Plants Observed within the Analysis AreaCommon NameMaidenhairspleenwort 1/Brightgreenspleenwort 1/BorealGaliumbedstraw1/, 2/NorthernbugleweedBog adder’smouthorchid 1/Scientific NameAspleniumtrichomanesssp.trichomanesAspleniumtrichomanesramosumkamtschaticumLycopusuniflorusMalaxispaludosaGlobalRank/StateRank Typical Habitat Population Location in the Analysis AreaG5 / S4G5 / S4G5 /S4 2/,3/G5 /S3S4 3/G5 / S4Cliffs, dry to mesicnon-limestone rocksCliffs, dry to mesicrocksMoist woods,thickets, meadowsWet meadows,streambanks,roadside ditchesOpen Sphagnumbogs, swampywoodsMarshes, thicketedges, wet habitatsAlong streams and1 population (2 small sub-populations)along the north shore of Swan Lake; anadditional population is located along anexisting road in the project area but is not inthe analysis area.1 small population along an existing road inthe project area road, which is not in theanalysis area.1 population along a stream terrace of LostCreek.2 populations; 1 scattered around shore ofSwan Lake and 1 along an existing road inthe project area but is not in the analysisarea.1 small population; in muskeg on southshore of Swan Lake.Choris’bog-orchid1/, 2/PlatantherachorisianaG3G4 /S4 3/1 small population; in muskeg on shore ofSwan Lake.Pacific buttercup Ranunculus G31 small population in the Lost Creek area.pacificus /S3S4 meadows1/ Species listed on the 2008 AKNHP Rare Vascular Plant List but dropped from the 2012 list (AKNHP 2008; AKNHP2012).2/ Not included on the 2012 AKNHP Rare Vascular Plant List but considered species of interest for the Tongass NF.3/ Indicates that the rank is preliminary (AKNHP 2012) Sources: Hitchcock and Cronquist 1973; Hulten 1968.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 10 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyFigure 2. Rare Plants Observed in the Analysis AreaSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 11 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency3.4 Plant Species Newly Documented in AlaskaPopulations of two plant species, Wallace’s spikemoss (Selaginella wallacei) and bog St. John’swort(Hypericum anagalloides), that have not previously been documented in Alaska wereobserved in the Swan Lake Expansion Project analysis area. Sources checked for distribution ofthese species include: the Consortium of Pacific Northwest Herbaria (2012), Plants NationalDatabase (USDA NRCS 2012), and University of Alaska Museum of the North Herbarium.3.5 General Vegetation TypesFour general vegetation types are present in the analysis area: old‐growth, young‐growth,unproductive forest and forested muskeg areas (Figure 3; Table 3). Additionally, a smallpercentage (approximately 2.2 percent) of the analysis area consists of open water associatedwith the Swan Lake Reservoir. General vegetation types were mapped using the Tongass NF’s Sizeand Density Mapping Model (SD7 model) that categorizes vegetation into seven categories.The predominant vegetation type in the analysis area is old‐growth forest which makes upapproximately 104.6 acres, or 74.6 percent of the analysis area (Table 3). Approximately 17.5acres (12.5 percent) of the analysis area consits of unproductive forest. Unproductive forest isdefined as forest land incapable of yielding crops of industrial wood because of adverse siteconditions (Forest Service 2008, Chapter 7). Young growth forest comprises approximately 4.6acres (3.2 percent) of the analysis area. Young growth characteristics vary with age; theyoungest stands are typically densely vegateted with a mix of young saplings and a dense shrublayer. As these stands progress in age, they develop a canopy that is predominantly closed andconsequently has limited understory vegetation.Table 3. General Vegetation Types in the Analysis Area 1/Acres in the AnalysisVegetation TypeAreaPercent of the Analysis AreaOld Growth 104.6 74.6Young Growth 4.6 3.2Forested Muskeg 10.5 7.5Unproductive Forest 17.5 12.5Water 2/ 3.1 2.2Total 140.3 1001/ Data comes from the Tongass NF tree Size and Density mapping model (SD7).2/ Consists of open water associated with the Swan Lake Reservoir.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 12 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyFigure 3. Vegetation Communities in the Analysis AreaSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 13 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyApproximately 10.5 acres (7.5 percent) of the analysis area was mapped as forested muskeg.Although forested muskeg is considered a wetland type; they are not considered a wetland typeas described in Section 3.7. Wetland resources in the analysis area, as described in Section 2.3.2,were mapped using a combination of the Tongass NF wetland layers, the hydric soils layers fromthe Ketchikan area soil survey for the Tongass NF, and wetland boundaries delineated duringfield surveys of the analysis area in August 2012. The majority of the areas delineated asforested muskeg by the Size and Density Mapping Model (Figure 3) were delineated as adifferent wetland category based on mapped wetlands described in Section 3.7 and shown onFigure 4. The small remaining areas mapped as forested muskeg based on the SD7 model werenot mapped as wetlands using the methods described above and in Section 2.3.2; therefore, theforested muskeg vegetation type is not further discussed in this report.3.6 Invasive PlantsSurveys for Invasive plants were conducted for this project in conjunction with surveys forSensitive and Rare plants (August 6 to August 10, 2012). Prevention measures for invasive plantswould follow the Tongass NF protocols specified in Forest Service Manual (FSM) 2000‐NationalForest Resource Management, Chapter 2080‐Noxious Weed Management, Tongass NationlForest Supplement–R10‐TNF‐2000‐20007‐1.3.7 Wetland ResourcesApproximately 55% or 77.4 acres of the analysis area consists of wetlands. Several types ofwetland communities, including forested wetlands, emergent wetlands, and moss muskegs arefound in the analysis area (Figure 4; Table 4; Appendix C). The different wetland types found inthe analysis area are briefly described below.Table 4. Acres of Wetland Resources in the Analysis Area 1/Wetland Type Acres Percent of Analysis Area 1/Forested Wetlands 60.9 43.4Emergent Wetlands 2/ 15.0 10.7Moss Muskegs 3/ 1.5 1.1Total 77.4 55.21/ Analysis area is approximately 140.3 acres.2/ Includes areas mapped as tall sedge fens in the Tongass National Forest wetland mapping layer.3/ As stated above in Section 3.5, forested muskegs mapped using the Forest Service’s Size Density Model OutputLayer are not included in the discussion of wetland resources.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 14 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyFigure 4. Wetlands in the Analysis AreaSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 15 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency3.7.1 Forested WetlandsForested wetlands occur on poorly or very poorly drained hydric mineral and organic soils.Forested wetlands are most common on broad glacial valley bottoms, gently sloping hill slopesor benches, but are also commonly found on steep terrain in areas overlaying volcanic geology.These wetlands provide important functions including wildlife habitat, water qualityimprovement, peak flow reduction and erosion control, organic matter production and export,and nutrient and carbon cycling (Cooke 2005). Forested wetlands may support the transfer ofwater to downslope resources, function as recharge areas for groundwater and streams, andprovide depositional areas for sediment and nutrients.Forested wetlands are wetlands dominated by vegetation greater than 20 feet in height. Theoverstory in forested wetlands in the analysis area is varied but typically consists of westernhemlock, western red cedar (Thuja plicata), Alaska yellow cedar, and red alder. The understory isoften dominated by skunk cabbage (Lysichitum americanum). Other shrub and herbaceousspecies occurring in the understory of forested wetlands in the analysis area include seepmonkeyflower (Mimulus guttatus), deer cabbage (Nephrophyllidium crista‐galli), fowlmannagrass (Glyceria elata [G. striata]), California black currant (Ribes bracteosum), andsalmonberry. In the analysis area, approximately 60.9 acres (43.4 percent) consists of forestedwetlands.3.7.2 Emergent Sedge WetlandsEmergent wetlands contain organic soils that are very poorly drained, moderately deep, and aredominated by sedges and grasses. They may include poor fens and rich bogs and there istypically some water flow through. Vegetation in these wetlands typically consist primarily ofvarious sedges and mosses with scattered shrubs. In the analysis area, emergent wetlands weretypically found along the margin of Swan Lake adjacent to open water. Species commonlyobserved in emergent wetlands in the analysis area include Sitka sedge (Carex aquatilis),smoothstem sedge (Carex laeviculmis), bluejoint reedgrass (Calamagrostis canadensis), marshcinquefoil (Comarum palustre [Potentilla palustris]), western water hemlock (Cicuta douglasii),scattered willows (Salix sp.), and occasionally small‐fruited bulrush (Scirpus microcarpus). Thesewetlands provide habitat for unique plants and animals, and contribute water to downsloperesources, provide carbon and nutrient cycling benefits for watershed function, and providewater storage for flood and erosion control (EPA 2011). In the analysis area, approximately 15acres (10.7 percent) consists of emergent wetlands. Emergent wetlands mapped in the analysisarea include types mapped as freshwater emergent sedge (emergent sedge/FW) and tall sedgefens. A few small emergent wetlands were observed outside the analysis area along existingroads and near existing facilities associated with dam operations.3.7.3 Moss MuskegsMoss muskegs are characterized by nutrient limiting acid peat bogs, dominated by sphagnummoss and peat deposits. Muskeg wetlands support a distinctive flora which are adapted to life inSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 16 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agencythese acidic, wet, low‐nutrient environments (EPA 2011). Soils in moss muskegs are typicallyorganic peat deposits that accumulate over unconsolidated glacial till or impermeable glacialsilts, typically on gentle or nearly level slopes. Moss muskegs often have no significant inflow oroutflow of water other than precipitation, thus ponded areas, a result of a high water table,occur within the wetland. These wetlands function as areas of surplus water and peataccumulation creating a stable microclimate and habitat for waterfowl and wildlife, includingcranes, black bear, amphibians, mink, and deer. In the analysis area, one moss muskeg wasobserved north of Track Creek on the southwestern shore of Swan Lake (Figure 4). Plantsobserved in this wetland included small cranberry (Vaccinium oxycoccos), bog blueberry(Vaccinium uliginosum), alpine laurel (Kalmia microphylla ssp. occidentalis), bog Labrador tea(Ledum groenlandicum), cottongrass (Eriophorum spp.), sundews (Drosera spp.), threeleafgoldthread (Coptis trifolia), smoothstem sedge, few‐flowered sedge (Carex pauciflora), tuftedbulrush (Trichophorum cespitosum), sphagnum moss (Sphagnum spp.) and scattered stuntedtrees including lodgepole pine (Pinus contorta), red alder and Sitka alder. Approximately, 1.5acres (1.1 percent) of the analysis area consists of muskeg habitat.4 PROJECT EFFECTSThis section describes the direct and indirect effects on rare and sensitive plants, generalvegetation, and wetland resources from the proposed action.Direct and indirect effects are estimated for rare and sensitive plants based on the impacts toknown populations and suitable habitat from the proposed project analysis area. Direct andindirect effects for general vegetation and wetland resources are estimated based on the acresof the analysis area that would be temporarily or permanently impacted by the proposedproject.4.1 Identified Issues and Concerns for Sensitive PlantsThree sensitive plant species with potential habitat in the Swan Lake Expansion analysis areahave been documented on the Ketchikan‐Misty Fiords Ranger District (edible thistle, lesserround‐leaved orchid, and Kruckeberg’s swordfern). Five sensitive plant species with potentialhabitat in the analysis area are suspected on the Ketchikan‐Misty Fiords Ranger District(spatulate moonwort, mountain lady’s slipper orchid, large yellow lady’s slipper orchid, Calder’slovage, and Alaska rein orchid) (Table 1). These eight species, and the potential project effects,are briefly described below. Although they have the potential to occur in the analysis area, noneof these species were located during field surveys of the analysis area associated with the SwanLake Expansion Project.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 17 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency4.1.1 Spatulate moonwort (Botrychium spathulatum W.H.Wagner)On the Tongass NF, spatulate moonwort grows in upper beach meadows, well drained openareas, limestone and alpine habitats (Forest Service 2009). It is suspected on the Ketchikan‐Misty Fiordss Ranger District. It was not observed during field surveys conducted for theproposed project. The analysis area does not include beach habitat, limestone or open drainedareas, and is located well below the alpine zone, thus a limited amount of potential habitat ispresent within the analysis area. There are some disturbed areas associated with the immediatearea around dam and existing roadways. These areas were surveyed and this species was notobserved.The project would have no direct or indirect effects to known populations or habitat of spatulatemoonwort. The risk of adverse effects to this plant is low, as impacts to potential habitat are notlikely to result from the project.4.1.2 Edible thistle (Cirsium edule var. macounii (Greene) D.J.Keil)On the Tongass National Forest, edible thistle grows in moist to mesic meadows, open forestsand talus slopes in the subalpine and alpine zones (Forest Service 2009). Although edible thistleis documented on the Ketchikan‐Misty Fiords Ranger District, it was not observed during fieldsurveys conducted for the proposed project. The analysis area does not have meadows or talusslopes, and is well below the alpine and subalpine zones, thus potential habitat is not presentwithin the analysis area. In addition, this is a relatively, large, distinctive plant that stands out inits habitat, making it difficult to overlook during surveys.The project would have no direct or indirect effects to known populations or habitat of ediblethistle. The risk of adverse effects to this plant is low, as impacts to potential habitat are notlikely to result from the project.4.1.3 Mountain lady’s slipper (Cypripedium montanum Douglas ex Lindl.)Lesser round‐leaved orchid may be found in a variety of habitats on the Tongass National Forest,although it is most commonly in forested habitats and along the forested muskeg edge. It hasalso been found in both old and young growth forests. The lesser round‐leaved orchid isdocumented in the Ketchikan‐Misty Fiords Ranger District. Although potential habitat is presentin the analysis area, this plant was not observed during field surveys.The project would have no effects to known populations of lesser round‐leaved orchid.Although potential habitat is present, this plant is not known to occur in the analysis area andwas not located during field surveys conducted for this project. Inundation, dam constructionand associated activities under the proposed action could affect potential habitat for this speciesand thus potentially affect undetected populations. Direct effects could occur throughinundation, damage by machinery, placement of fill material, road improvements andmaintenance. Indirect effects are also possible, potentially occurring as a result of light levelSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 18 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agencychanges, soil moisture changes resulting from inundation, or introduction of invasive plantspecies.4.1.4 Large Yellow Lady’s Slipper Orchid (Cypripedium parviflorum Salisb. var.pubescens (Willdenow) O. W. Knight)On the Tongass NF, large yellow lady’s slipper orchid grows in peat lands and open areas onlimestone substrates (Forest Service 2009). There are no known populations of this plant on theKetchikan‐Misty Fiords Ranger District; however, it is suspectd to occur. This species was notobserved during field surveys conducted for the proposed project.The project would have no direct or indirect effects to known populations of large yellow lady’sslipper. This plant is not known on the Ketchikan‐Misty Fiords Ranger District.The project would have no direct or indirect effects to potential habitat of large yellow lady’sslipper orchid because very little potential habitat for this species (peatlands on calcareoussubstrates) occurs within the analysis area. In addition, all (noncalcareous) peatlands habitat inthe analysis area were searched during field surveys. It is therefore, unlikely that undetectedpopulations would be affected. The risk of adverse effects to this plant is low, as no suitablehabitat is present in the analysis area.4.1.5 Calder’s lovage (Ligusticum calderi Math. & Const.)Calder’s lovage typically grows on forest edges and dry and wet meadows in the subalpine andalpine zones on the Tongass NF (Forest Service 2009). Calder’s loveage is suspected to occur onthe Ketchikan‐Misty Fiords Ranger District but was not observed during field surveys conductedfor the proposed project. The analysis area does not have calcareous substrates and is wellbelow the alpine and subalpine zones, thus potential habitat is not present within the analysisarea.The project would have no direct or indirect effects to known populations or habitat of Calder’slovage. The risk of adverse effects to this plant is low, as impacts to potential habitat are notlikely to result from the project.4.1.6 Alaska Rein Orchid (Piperia unalascensis (Spreng.) Rydb.)On the Tongass NF, this orchid grows in dry, open sites, under tall shrubs in the riparian zone,mesic meadows and drier areas in coniferous and mixed evergreen forests from low to subalpineelevations (Forest Service 2009). Alaska rein orchid is suspected on the Ketchikan‐Misty FiordsRanger District. Although it was not observed during field surveys conducted for the proposedproject, potential habitat is present within the analysis area.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 19 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyThe project would have no effects to known populations of Alaska rein orchid. Althoughpotential habitat is present, this plant is not known to occur in the analysis area and was notlocated during field surveys conducted for this project. Inundation, dam construction andassociated activities under the proposed action could affect potential habitat for this species andthus potentially affect undetected populations. Direct effects could occur through inundation,damage by machinery, placement of fill materials, road widening or improvements, orvegetation clearing activities. Indirect effects are also possible, potentially occurring as a resultof light level changes or soil moisture changes as a result of inundation. Because this plant maygrow in a variety of habitats, much of the proposed disturbance that would result from theproject has the potential to disturb habitat and undetected individuals.4.1.7 Lesser Round‐Leaved Orchid (Platanthera orbiculata (Pursh) Lindl.)Lesser round‐leaved orchid may be found in a variety of habitats on the Tongass NF, although it ismost commonly in forested habitats and along the edges of forested muskeg. It has been foundin both old and young growth forests. The lesser round‐leaved orchid is documented in theKetchikan‐Misty Fiords Ranger District; however, this plant was not observed during fieldsurveys. Potential habitat for lesser round‐leaved orchid is present in the analysis area.The project would have no effects to known populations of Alaska rein orchid. Althoughpotential habitat is present, this plant is not known to occur in the analysis area and was notlocated during field surveys conducted for this project. Inundation, dam construction andassociated activities under the proposed action could affect potential habitat for this species andthus potentially affect undetected populations. Direct effects could occur through inundation,damage by machinery, placement of fill materials, road widening or improvements, orvegetation clearing activities. Indirect effects are also possible, potentially occurring as a resultof light level changes or soil moisture changes as a result of inundation. Because this plant maygrow in a variety of habitats, much of the proposed disturbance that would result from theproject has the potential to disturb habitat and undetected individuals.4.1.8 Kruckeberg’s swordfern (Polystichum kruckebergii W.H. Wagner)On the Tongass National Forest, Kruckeberg’s swordfern grows on talus slopes and rock outcropsin ultramafic areas (Forest Service 2009). Although Kruckeberg’s swordfern is documented onthe Ketchikan‐Misty Fiords Ranger District, it was not observed during field surveys conductedfor the proposed project. The analysis area does not have ultramafic areas, thus potentialhabitat is not present within the analysis area.The project would have no direct or indirect effects to known populations or habitat ofKruckeberg’s swordfern. The risk of adverse effects to this plant is low, as impacts to potentialhabitat are not likely to result from the project.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 20 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency4.2 Identified Issues and Concerns for Rare PlantsPopulations of two rare plant species, northern bugleweed and Pacific buttercup, were observedin the Swan Lake Expansion analysis area or just outside of the analysis area. Additionally,populations of five plant species that were on the AKNHP 2008 Rare Vascular Plant List (AKNHP2008) but were subsequently removed, were found in the analysis area and just outside of theanalysis area . Potential direct and, indirect impacts to all seven of these species are discussed inthe followings sections.4.2.1 Maidenhair spleenwort (Asplenium trichomanes L. ssp. trichomanes)Maidenhair spleenwort is a small, fern species that typically grows in dry to moist cracks in cliffs.Its range includes much of North America (USDA NRCS 2012). It is known from 11 locations onthe Tongass National Forest, but there are no known on the Ketchikan‐Misty Fiords RangerDistrict. On the 2008 AKNHP list, Maidenhair spleenwort was assigned a rank of S1; however, ithas subsequently been removed from the rare plant list (AKNHP 2012). A small maidenhairspleenwort population (with two subpopulations) was located in the analysis area. Fewer than30 plants were observed in the population; however the area was incompletely surveyed. Thepopulation was located on seepy, southeast‐facing cliffs. This habitat is common within theanalysis area. An additional small maidenhair spleenwort population was located along projectroads outside of the analysis area.The proposed project would likely have direct effects on several of the plants in the populationsof maidenhair spleenwort along the lakeshore because some of the plants would be inundatedby the 15‐foot rise in maximum pool elevation. Indirect effects to plants adjacent to, but notdirectly, inundated are also possible, potentially occurring as a result of light level changes orwater table level changes resulting from inundation. Alternatively, habitat for maidenhairspleenwort may be created by the project if rocks or cliffy habitat is exposed by roadimprovements or construction activities. The presence of additional undetected populations inthe analysis area is likely because this type of habitat is common in the analysis area and theanalysis area was not completely surveyed for this species.4.2.2 Brightgreen spleenwort (Asplenium trichomanes‐ramosum L.)Brightgreen spleenwort is a small fern species that typically grows in dry to moist cracks in cliffs.Its range includes western and northeastern North America (USDA NRCS 2012). It is known from9 locations on the Tongass NF, all of them on the Ketchikan‐Misty Fiords Ranger District.Brightgreen spleenwort was assigned a rank of S3 on the 2008 list; however, on the 2012 list ithas been assigned a rank of S4 in Alaska (AKNHP 2008; AKNHP 2012). The Rank S4 indicates thatthe taxon is more common than previously thought and may include species that would be moreaccurately described as S4S5 or S5 (AKNHP 2012). Because of its S4 rank, it is no longer activelytracked by the AKNHP. A small population of this species was located just outside the analysisarea along existing roads associated with dam operations. Fewer than ten plants were observedin the population; however the population was incompletely surveyed. The population wasSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 21 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agencylocated on seepy, south‐facing cliffs that were created when the Swan Lake Project was initiallybuilt. This habitat is common within the analysis area.Direct and Indirect ImpactsThe proposed project would not likely have direct effects to the population because projectactivities are unlikely to occur in the area where this species was observed (below the dam).Additionally, this species was not observed in the analysis area inundation zone. Indirect effectsto plants are possible, potentially occurring as a result of construction activities occurring in thevicinity of the population. Alternatively, habitat for brightgreen spleenwort may be created bythe project if rocks or cliffy habitat is exposed by road improvements or construction activities.The presence of additional undetected populations is likely because this type of habitat iscommon within the analysis area and the area was not completely surveyed for this species.4.2.3 Boreal bedstraw (Galium kamtschaticum Steller ex Schult & Schult)Boreal bedstraw is a perennial bedstraw species that typically grows in moist, cold coniferousforests and moist places (Schultz 2003). Its range includes much of eastern Canada and severalnortheastern states, northwestern Canada, Washington, the Aleutian chain and Alaska (USDANRCS 2012). Prior to field surveys in August 2012, there were no known populations of borealbedstraw the Tongass National Forest. On the 2008 AKNHP rare plant list, boreal bedstraw wasassigned a rank of S2; however, on the 2012 list it has been assigned a rank of S4 in Alaska(AKNHP 2008; AKNHP 2012). The Rank S4 indicates that the taxon is more common thanpreviously thought and may include species that would be more accurately described as S4S5 orS5 (AKNHP 2012). Because of its S4 rank, it is no longer actively tracked by the AKNHP.A single boreal bedstraw population was located in the analysis area on the gently slopedriparian terrace of Lost Creek. Plants were located under dense stands of tall shrubs in forestedwetlands and uplands immediately adjacent to forested wetlands. An estimated total of 30rhizomatous patches were mapped and likely more were present throughout the denselyvegetated area.The proposed project would likely have direct effects on several of the plants in the populationbecause most of the population would be inundated by the 15‐foot dam pool raise. Indirecteffects to plants not inundated are also possible, potentially occurring as a result of light levelchanges or water table level changes resulting from inundation. The presence of additionalundetected populations in the analysis area is possible because the analysis area includesadditional potential habitat for this species.4.2.4 Northern bugleweed (Lycopus uniflorus Michx.)Northern bugleweed is a rhizomatous perennial herb in the mint family with square stems andtiny white flowers (see Appendix C, Swan Lake Project Area Photos). Its habitat includes aSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 22 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agencyvariety of wet habitats. It is widely distributed across North America (USDA NRCS 2012).Northern bugleweed has been assigned the preliminary rank of S3S4 in Alaska (AKNHP 2012).The Rank S3S4 indicates that within the State of Alaska this plant is vulnerable in the state due torestricted range, relatively few populations, recent and widespread declines, or other factorsmaking it vulnerable to extirpation (S3)/ apparently secure; uncommon but not rare (S4). It isknown from 7 locations on the Tongass National Forest, and 6 locations on the Ketchikan‐MistyFiords Ranger District. In the analysis area, one large populations of northern bugleweed wasdocumented and includes multiple locations in moist or inundated areas around Swan Lake.Another population was observed just outside the analysis area, around the dam and the accessroad, in moist disturbed sites like gravel roads and wet ditches.The proposed expansion would likely have direct effects on many rhizomatous clones ofindivuals in the population. Many of thes individuals and clones were under water whenobserved during field surveys in August 2012; however, they would be exposed when reservoirlevels are lower. Individuals underwater but close to the water surface were observable;however, it is not known how far vertically downslope this species was or is able to grow withthe current hydrological fluctuation regime. If the dam pool was raised 15 vertical feet it is likelythat this species would be able to recolonize the new reservoir margin, depending on thehabitat that would be adjacent to the new maximum pool level. Direct effects to the populationof this species observed outside of the analysis area could occur through damage by machinery,placement of fill material, and road improvements and maintenance.Indirect effects to plants are also possible, potentially occurring as a result of light level changesor water table level changes resulting from inundation, as well as the introduction of invasiveplant species from construction and operation of the Project. Additional undetectedsubpopulations in the analysis area are possible because the shoreline of the entire analysis areawas not searched.4.2.5 Bog adder’s‐mouth orchid (Malaxis paludosa (L.) Swartz)Bog adder’s‐mouth orchid is a diminutive orchid, with several basal leaves and spike of 2 to 55small greenish flowers. It grows in open Sphagnum bogs and swampy woods (FNA 2002). Bogadder’s‐mouth orchid ranges across northern North America (USDA NRCS 2012). It is knownfrom 18 locations on the Tongass National Forest, and 5 locations on the Ketchikan‐Misty FiordsRanger District. On the 2008 AKNHP rare plant list, boreal bedstraw was assigned a rank of S3;however, on the 2012 list it has been assigned a rank of S4 in Alaska (AKNHP 2008; AKNHP 2012).The Rank S4 indicates that the taxon is more common then previously thought and may includespecies that would be more accurately described as S4S5 or S5 (AKNHP 2012). Because of its S4rank, it is no longer actively tracked by the AKNHP. A single bog adder’s‐mouth population ofseveral plants was observed in the analysis area on a small muskeg in the south end of theanalysis area.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 23 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyThe proposed project would likely have direct effects on the population because it would beinundated by the 15‐foot increase in maximum pool elevation. There may be additionalundetected plants in the muskeg habitat, although the area was well searched. Indirect effectsto plants not inundated are also possible, potentially occurring as a result of light level changesor water table level changes resulting from inundation. The presence of additional undetectedpopulations in the analysis area is unlikely because the analysis area does not include additionalmuskeg habitat.4.2.6 Choris’ bog‐orchid (Platanthera chorisiana (Cham.) Reichenb.)Choris’ bog‐orchid is a diminutive orchid, with two clasping leaves located near the base of theplant and 5‐18 small greenish, sessile flowers in a crowded spike. It is an obligate wetlandspecies (Fuentes et al. 2007), which grows in wet places and Sphagnum bogs (Hulten 1968).Choris’ bog‐orchid ranges from Japan, through the Aleutian Islands and mainland of Alaska,southward through the Queen Charlotte Islands and Vancouver Island and British Columbiainterior into Washington State (Fuentes et al. 2007). It is not known from the Tongass NationalForest. On the 2008 AKNHP rare plant list, Choris’ bog‐orchid was assigned a rank of S2;however, on the 2012 list it was assigned a rank of S4 (AKNHP 2008; AKNHP 2012). The Rank S4indicates that the taxon is more common then previously thought and may include species thatwould be more accurately described as S4S5 or S5 (AKNHP 2012). Because of its S4 rank, it is nolonger actively tracked by the AKNHP. A single small Choris’ bog‐orchid population was locatedin the analysis area on a small muskeg on the south end of the analysis area. Two plants werelocated under a short tree.The proposed project would likely have direct effects on the population because the populationwould be inundated by the 15‐foot increase in maximum pool level. There may be additionalundetected plants in the muskeg although it was well searched. Indirect effects to plants notinundated are also possible; potentially occurring as a result of light level changes or water tablelevel changes resulting from inundation. The presence of additional undetected populations inthe analysis area is unlikely because the analysis area does not include additional muskeg habitatfor this species.4.2.7 Pacific Buttercup (Ranunculus pacificus (Hulten) L.D.Benson)Pacific buttercup is a perennial buttercup species with large yellow flowers and dissected leaves.Its habitat is along streams and in meadows (FNA 20). It is an Alaskan endemic known fromsoutheast Alaska and the Aleutian chain (USDA NRCS 2012). Prior to field surveys conducted inAugust 2012 for the Project, there were no known locations of Pacific buttercup on the TongassNational Forest. Pacific buttercup has been assigned a rank of S3S4 in Alaska (AKNHP 2012). TheRank S3S4 indicates that within Alaska this plant is vulnerable due to restricted range, relativelyfew populations, recent and widespread declines, or other factors making it vulnerable toextirpation (S3); apparently secure; uncommon but not rare (S4). A small Pacific buttercupSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 24 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agencypopulation was located in the analysis area, growing on mossy log with a number of other forbspecies on the riparian terrace of Lost Creek (see Appendix C, Swan Lake Project Area Photos).The proposed project would likely have direct effects on the plants in the population becausemost of the population would abe inundated by the 15‐foot increase in maximum full poolelevation. Indirect effects to plants not inundated are also possible; potentially occurring as aresult of light level changes or water table level changes resulting from inundation. Thepresence of additional undetected populations in the analysis area is possible, but unlikelybecause the analysis area includes only limited additional unsurveyed habitat for this species.4.3 Identified Issues and Concern for Plants Newly Documented inAlaskaPopulations of two plant species that have not previously been documented in Alaska wereobserved in the Swan Lake Expansion Project analysis area: Wallace’s spikemoss and bog St.John’s‐wort. Potential direct and indirect impacts to these species are discussed in the followingsections.4.3.1 Wallace’s spikemoss (Selaginella wallacei Heiron.)Wallace’s spikemoss is a trailing, herbaceous, spore‐producing species that typically grows inopen mats on exposed rocky sites (Hitchcock et al. 1973). Its range includes western NorthAmerica up to British Columbia (USDA NRCS 2012). The farthest north a previously documentedpopulation is from near Prince Rupert in British Columbia, approximately 110 miles southeast ofSwan Lake.A small Wallace’s spikemoss population was located in the analysis area. One sterile, trailingplant was observed along the reservoir margin on a seepy, southeast‐facing cliff with thick moss.The analysis area; however was incompletely surveyed for this species and this habitat type iscommon within the analysis area. The specimen was verified by botanist P. Zika (Peter Zika,personal communication, October 2012). Collections of this species will be deposited at theUniversity of Alaska Museum of the North Herbarium and the University of WashingtonHerbarium.Direct and Indirect ImpactsThe proposed project would likely have direct effects on the one observed individual ofWallace’s spikemoss because at least portion of the plant would be inundated by the 15‐footdam pool raise. Indirect effects to the portions of the plant that were not inundated are alsopossible. This could potentially occur as a result of light level changes. The presence of additionalundetected populations in the analysis area is likely because this type of habitat is common andthe analysis area was not completely surveyed for this species.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 25 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency4.3.2 Bog St. John’s‐wort (Hypericum anagalloides Cham. & Schltdl.)Bog St. John’s‐wort is a small, perennial herb in the St. John’s‐wort family with matted stems andtiny, orangish‐yellow flowers. Habitat for this species includes a variety of moist to wet habitats.It is widely distributed across western North America (USDA NRCS 2012). The most northernpopulation previously documented is on McCauley Island in British Columbia, approximately 160miles south of Swan Lake.In the analysis area, two populations of bog St. John’s‐wort were observed. One population wasgrowing on a large floating log mat on open water in Swan Lake. The other was in the vicinity ofLost Creek. Although this species was observed twice in the analysis area, it was not collected.Direct and Indirect ImpactsThe proposed project would likely have direct effects on the bog St. John’s‐wort population nearLost Creek because some of the plants would be inundated by the 15‐foot dam pool raise. Thepopulation on the floating log mat would likely keep floating amidst the 15‐foot dam pool raise.Indirect effects to plants not inundated are also possible, potentially occurring as a result of lightlevel changes or water table level changes resulting from inundation. The presence of additionalundetected populations in the analysis area is likely because suitable habitat for this species iscommon in the analysis area and the analysis area was not completely surveyed for this species.4.4 Management Requirements and Mitigation Measures for Sensitiveand Rare PlantsAs most populations of rare plants observed in the analysis area would likely be inundated withrising reservoir levels, avoidance of impacts to these populations is not feasible. The followingmeasures are suggested mitigation measures for the impacts to rare species in the analysis area.Final mitigation measures would be developed in collaboration with Forest Servicebotanist/ecologists.Conduct pre‐construction surveys for rare plants in areas of potential habitat in theanalysis area to obtain population estimates for each rare plant species observed.If feasible, populations of rare plants will be transplanted, or seeds will be collected andsown, in suitable areas above the inundation zone. These transplanted and/or seededpopulations will be monitored for 5 years to determine if they are successfully becomingestablished and to compare population estimates of transplanted populations withpopulation estimates of impacted populations.If transplantation or relocation is not possible, conserve and monitor existingpopulations, outside of the inundation zone, of the rare plant species that will beimpacted by inundation.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 26 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyIf any previously undiscovered rare or sensitive plants are encountered at any time priorto or during implementation of this project, the Forest Service botanist/ecologist shall benotified. Following review of the population, avoidance measures or mitigationmeasures will be applied. These may include the measures listed above. If rare plantpopulations are observed in areas that won’t be inundated but may be impacted byProject construction the following measures may be implemented:ooConstruction activities will be sited to avoid populations of rare plants to theextent possible.Exclusion fencing will be placed around rare plant populations to protect plantsduring construction.Rare plant population descriptions are given in Appendix F.4.5 Identified Issues and Concerns for General VegetationImpacts to old growth and young‐growth forest from the proposed Project are described below.Impacts to forested muskeg habitat is described in Section 4.7.4.5.1 Old‐Growth ForestThe majority of construction activities associated with expansion of the new dam would occur inareas already disturbed or developed for construction of the existing dam. Therefore, oldgrowthforest would likely not be impacted by construction activities. Direct impacts to oldgrowthforest would result from inundation from the 15‐foot increase in maximum full poolreservoir levels. Impacts to old‐growth forest from rising reservoir levels would result in thepermanent loss of old‐growth trees that would be submerged. Rising reservoir levels could alsoindirectly alter the nature and stability of the adjacent forest. Indirect effects on old growthcould occur through changes in hydrology and soil structure and stability not only from risingreservoir levels but also from fluctuating reservoir levels. This could result in additional loss ofold‐growth trees and/or a change in species composition in areas subjected to rising andfluctuating reservoir levels. Plant species adapted to greater soil moisture and occasionalinundation would become established in areas adjacent to the new maximum pool level.Although unlikely, due to the lack of invasive plant species currently present in the analysis area,indirect effects to old‐growth forest could also occur from invasive plant spread. Disturbance toor adjacent to old‐growth forest could increase the risk for invasive plant establishment. It isassumed that all old growth within the analysis area (approximately 104.6 acres) would be lost.It is assumed that all trees within the inundation zone would be cut (stumps left intact) andremoved where feasible. A timber cruise will be conducted to estimate the actual amount oftimber that would be cut and removed, and logging plan would be developed and approved bythe appropriate agency. No timber will be cut or removed within the Project area on the TongassNF.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 27 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agency4.5.2 Young Growth ForestAs stated above, the majority of construction activities associated with expansion of the newdam would occur in areas already disturbed or developed for construction of the existing dam.Therefore, young‐growth forest would likely not be impacted by construction activities. Directimpacts to young growth would potentially result from inundation due to rising reservoir levels.As stated above, the majority of dam construction activities would occur in areas alreadydisturbed or developed for construction of the existing dam. Temporary staging areas andimprovements to existing roads; however, may be needed for dam construction and may impactyoung growth forest. Areas cleared for temporary staging areas would eventually revegetate andbecome young‐growth forest again. If widening of existing roads is required this could result inthe permanent loss of young growth forest. Similar to old‐growth forest, rising reservoir levelswould result in the permanent loss of young growth trees that would be submerged. Risingreservoir levels could also indirectly alter the nature and stability of the adjacent forest. Indirecteffects on young‐growth forest could occur through changes in hydrology and soil structure andstability not only from rising reservoir levels but also from fluctuating reservoir levels.Indirect effects to young growth could also occur from invasive plant spread. Due to the lack of adense forested canopy, disturbance to or adjacent to young‐growth forest could increase the riskfor invasive plant establishment. It is assumed that all young growth within the analysis area(approximately 4.6 acres) would be lost.4.6 Management Requirements and Mitigation Measures for GeneralVegetationThe effects of the Swan Lake Dam Expansion Project on forested portions would be limitedwithin the existing FERC boundary as much of the vegetation was removed prior to inundation;however, some additional removal adjacent to the reservoir may been needed. Approximately26 acres have been identified in the Lost Creek area, which were not part of the originalconveyed lands and that additional ground surveys determined the 350‐foot contour extendingfurther upstream. The entirety of this area is owned by the USDA Forest Service.Avoidance of impacts to productive old‐growth resulting from the proposed 15‐foot increase inpool elevation; however, would not be feasible. Trees that require removal within the activityarea (i.e., between 330 feet and 350 feet) will follow Forest Plan Standards and Guidelines aswell as BMPs. This will include conducting a timber cruise and working closely with the AlaskaDNR in the development of timber settlement agreement prior to removal. As previously stated,no timber would be cut and removed on Forest Service land.4.7 Identified Issues and Concerns to Wetland ResourcesImpacts to wetlands are based on the acres of wetland affected by inundation due to the 15‐footrise of reservoir levels to a new maximum pool elevation of 350 feet. As locations and extent ofSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 28 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agencyproposed project activities associated with construction of the expanded dam are not currentlyknown, acres of potential impacts to wetlands from these activities have not been calculated.Direct impacts to wetland resources from the proposed project include acres of wetland affectedby construction activities, either as permanent or temporary wetland fill, or as a result ofinundation due to the 15‐foot increase in maximum full pool reservoir elevation. The majority ofactivities associated with expansion of the new dam would occur in areas already disturbed ordeveloped for construction of the existing dam; however, wetland impacts in these areas couldpotentially be impacted. Direct impacts to wetland resources would primarily occur due toinundation.4.7.1 Effects from Rising Reservoir Levels Within the Analysis AreaRising reservoir levels would flood areas of emergent and forested wetlands and moss andforested muskegs within the analysis area. These areas of wetland resources would bepermanently lost due to inundation. Similar wetland communities may develop adjacent to thenew reservoir margins depending on steepness of the adjacent slope. Alternatively, risingreservoir levels could indirectly alter the nature and stability of the adjacent wetland vegetation.Approximately 75.9 acres of forested wetlands, 6.1 acres of emergent wetlands, 1.5 acres ofmoss muskegs, and 10.5 acres of forested muskegs would be permanently lost due to inundationfrom rising reservoir levels.Indirect impacts to wetland resources could also occur from rising and fluctuating water levels inthe reservoir in association with dam operation. Changes to hydrology in wetlands adjacent tothe new maximum full pool reservoir elevation could impact the functions of these wetlands andalter the species composition of these areas. Alteration of species composition and hydrologicregimes in these wetlands could also result in the loss or modification of wetland habitat.Indirect impacts on wetland habitat through changes in hydrology and soil structure and stabilitycould occur not only from rising reservoir levels but also from fluctuating reservoir levels.4.7.2 Effects from Construction Activities Outside the Analysis AreaNo forested wetlands or moss muskegs would be directly or indirectly impacted by constructionactivities associated with expansion of the new dam. Small amounts of emergent wetland couldbe directly impacted from construction of temporary staging areas and widening or improvingexisting roads. Emergent wetlands in areas where construction activities would occur are highlydegraded and located in heavily disturbed areas (i.e., adjacent to roads and in roadside ditches).Impacts to wetlands from construction of staging areas would be temporary. Impacts towetlands would be permanent in areas where existing roads are widened or improved.Functions and values of temporarily impacted emergent wetlands would be restored followingthe removal of temporary fill and revegetation. Wetland acreage permanently impacted wouldresult in a loss of wetland functions, including water quality improvement, wildlife habitat, andhydrologic functions. However, wetlands that would be permanently impacted are highlySwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 29 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power Agencydegraded and are associated with or adjacent to heavily disturbed areas. Additionally,permanent loss of emergent wetland acreage from construction activities is expected to beminimal.Indirect impacts to wetland resources could occur from changes to hydrology associated withconstruction activities. If hydrology of wetlands adjacent to construction activities is altered itcould result in a change in the species composition and a loss of wetland functions. Indirecteffects to emergent wetlands could also result from invasive plant spread. Ground or soildisturbance to or adjacent to wetland resources would increase the risk for invasive plantestablishment.4.8 Management Requirements and Mitigation Measures for WetlandResourcesThe effects of the Swan Lake Dam Expansion Project on wetlands would be limited, to the extentpossible, through the site‐specific application of Forest Plan Standards and Guidelines as well asBMPs for all action alternatives. Temporary staging areas and road improvement or wideningactivities would be constructed in accordance with the BMPs identified in FSH 2509.22.Due to the preponderance of wetlands along the perimeter of Swan Lake, avoidance of impactsto wetlands resulting from the proposed 15‐foot increase in pool elevation; , would not befeasible.5 REFERENCESAKNHP (Alaska Natural Heritage Program). 2008. Alaska Natural Heritage Program Rare VascularPlant Tracking List. Available online at: http://137.229.141.57/wpcontent/uploads/2010/11/Rare‐Plant‐List‐2008.pdf.AKNHP. 2012. Alaska Natural Heritage Program Rare Vascular Plant Tracking List. Availableonline at: http://aknhp.uaa.alaska.edu/botany/rare‐plants‐species‐lists/2012‐rarevascular‐plant‐list.Connor, Cathy, and Daniel O’Haire. 1988. Roadside Geology of Alaska. Mountain PressPublishing Company, Missoula, Montana.Consortium of Pacific Northwest Herbaria. 2012. Herbarium Specimens from the PacificNorthwest. Available online at: http://www.pnwherbaria.org/index.phpCooke. 2005. Cooke Scientific Services, Inc. Pacific Northwest Forested Wetland LiteratureSurvey Synthesis Paper. April 2005. 95 pp.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 30 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyDillman, K.L., P.C. Crosse, and C. Sever. 2009. Tongass National Forest‐Guidance for BiologicalEvaluations: Sensitive Plants. USDA Forest Service. Tongass National Forest. March.Elzinga, C. L., D.W. Salzer, and J.W. Willoughby. 1998. Measuring and Monitoring PlantPopulations. Technical Reference 1730‐1. Bureau of Land Management, NationalBusiness Center. Denver, CO.EPA (U.S. Environmental Protection Agency). 2011. Environmental Protection Agency. WetlandTypes. Available on‐line at: http://water.epa.gov/type/wetlands/bog.cfmForest Service (United States Department of Agriculture, Forest Service). 1976. National ForestManagement Act. Available online at:http://www.fs.fed.us/emc/nfma/includes/NFMA1976.pdfForest Service. 2008. Tongass National Forest: Land and Resource Management Plan. U.S. Dept.of Agriculture, Alaska Region: USDA Forest Service, Tongass Land Management PlanningTeam, Juneau. USDA Forest Service. 2009. Forest Service Alaska Region SensitiveSpecies List, Assessment and Proposed Revisions to the 2002 List. Tongass NationalForest, Alaska.Fuentes, T.L., L.L. Martin, and A.M. Risvold. 2007. Conservation Assessment for Platantherachorisiana (Choris’ bog‐orchid). USDA Forest Service, Pacific Northwest Region, Mt.Baker‐Snoqualmie National Forest.Heithecker, T., and C. Halpern. 2007. Edge‐related Gradients in Microclimates in ForestAggregrates Following Structural Retention Harvests in Western Washington. Forest andEcology Management 248 (2007) 163‐173. May 8, 2007.Hitchcock, C.L., and A. Cronquist. 1973. Flora of the Pacific Northwest. University of WashingtonPress, Seattle and London.Hulten, E. 1968. Flora of Alaska and Neighboring Territories. Stanford University Press,Stanford, California.Schultz, J. 2003. Conservation assessment for boreal bedstraw (Galium kamtschaticum). USDAForest Service, Eastern Region. Available online at:http://www.fs.fed.us/r9/wildlife/tes/ca‐overview/docs/Plant_Galium_kamtschaticum‐Boreal_Bedstraw.pdfTetra Tech. 2012a. Pre‐Field Review Worksheet for Sensitive Plants. Prepared for the Ketchikan‐Misty Fiords Ranger District, Tongass National Forest by Kathryn Beck and Steve Negri,Tetra Tech. July.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 31 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTetra Tech. 2012b. Draft Invasive Plant Risk Assessment. Project. Prepared for the Ketchikan‐Misty Fiords Ranger District, Tongass National Forest by Karen Brimacombe, Tetra Tech.September.University of Alaska Museum of the North. 2012. Herbarium (ALA). Available online at:http://www.uaf.edu/museum/collections/herb/USDA (United States Department of Agriculture). 1983. Fish and Wildlife Policy. DepartmentalRegulation 9500‐004. April 28. Available online at:http://www.ocio.usda.gov/directives/doc/DR9500‐004.pdfUSDA NRCS (United States Department of Agriculture, Natural Resources Conservation Service).2012. The PLANTS Database (http://plants.usda.gov, September 2012). National PlantData Team, Greensboro, NC.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page 32 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyAppendix A – Forest Service Alaska RegionSensitive Species List, May 2012Swan Lake Hydroelectric Project January 2013FERC Project No. 2911Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable A‐1. Forest Service Alaska Region Sensitive Species List, May 2012Plant NameHuman disturbance historic welldrainedMaritime beachUpper beach meadowWell drained open areasTall shrublandGeneral HabitatScientific NameUSDAPlantcode Common NameAphragmusEschscholtz's littleAPESeschscholtzianusnightmareX XBotrychiumspathulatumBOSP4 Spatulate moonwort X X X X SBotrychium tunux BOTU3 Moosewort fern X X X X XBotrychiumMoonwort fern, noBOYAyaaxudakeitcommon nameX X X XCirsium edule var.macouniiCIEDM Edible thistle X X X KCochleariaSessileleafCOSE8sessilifoliascurvygrassXCypripediumSpotted lady’s slipperCYGUguttatumX X XCypripediumMountain lady’sCYMO2montanumslipperX X X X SCypripediumparviflorumvar. pubescensCYPAP3Large yellow lady’sslipperBeach/ forest ecotoneForest edgeForestOpen forestStreamside, riverbankBogHeathDry meadowWet meadowAlpine and subalpineTalus slopesRock outcropUltramaficCalcareousX X X SLigusticum calderi LICA15 Calder’s loveage X X X X SLobariaLichen, no commonLOAM6XKamplissimanamePapaverPale poppyPAAL5X X X XalboroseumRangerDistrictKETCHIKAN 1/Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐1 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable A‐1. Forest Service Alaska Region Sensitive Species List, May 2012 (continued)Plant NameScientific NameUSDAPlantcode Common NamePiperiaunalascensisPlatantheraLesser round-leavedPLOR4orbiculataorchidPolystichumKruckeberg’sPOKRkruckebergiiswordfernRomanzoffiaUnalaska mist-maidROUNunalaschcensisSidalceaHenderson’sSIHE4hendersoniicheckermallowTanacetumbipinnatumsubsp. huronense1/ K=Known occurences S=Suspected to occurY=Known occurencesHuman disturbance historic welldrainedMaritime beachUpper beach meadowWell drained open areasTall shrublandBeach/ forest ecotoneForest edgeForestGeneral HabitatPIUN3 Alaska rein orchid X X X X X SOpen forestStreamside, riverbankBogHeathDry meadowX X X X KWet meadowAlpine and subalpineTalus slopesX X XRock outcropUltramaficCalcareousX X X KX X STABIH Dune tansy X SRangerDistrictKETCHIKAN 1/Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐2 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyAppendix B – Alaska Natural Heritage Program2012 Rare Vascular Plant ListSwan Lake Hydroelectric Project January 2013FERC Project No. 2911Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant ListScientific Name and Authority Synonyms FamilyGlobalRankAbies amabilis Douglas ex J. Forbes Picea amabilis Douglas ex Loudon, Pinus amabilis Douglas Pinaceae G5 S3*Agoseris aurantiaca (Hooker) Greene var. aurantiaca Agoseris angustissima Greene, A. arachnoidea Rydberg, A. carnea Rydberg, A.gaspensis Fernald, A. gracilens (A. Gray) Greene, A. gracilens var. greenei (A. Gray)Asteraceae G5T4T5 S1S2S. F. Blak, A. greenei (A. Gray) Rydberg, A. howellii Greene, A. lackschewitzii DouglasM. Henderson & R. K. Moseley, A. nana Rydberg, A. naskapensis J. Rousseau &Raymond, A. prionophylla Greene, A. subalpina G. N. Jones, A.vulcanica Greene, Troximon aurantiacum HookerAgoseris glauca (Pursh) Rafinesque Agoseris altissima Rydberg, A. aspera (Rydberg) Rydberg, A. eisenhoweri B. Boivin, A.glauca ssp. aspera (Rydberg) Piper, A. glauca var. aspera (Rydberg) Cronquist, A.Asteraceae G5 S2S3Qglauca var. pumila (Nuttall) Garrett, A. glauca ssp. scorzonerifolia (Schrader) Piper, A.glauca var. villosa (Rydberg) G. L. Wittrock, A. isomeris Greene, A. lacera Greene, A.lanulosa Greene, A. lapathifolia Greene, A. leontodon Rydberg var. aspera Rydberg, A.leontodon var. pygmaea Rydberg, A. longissima Greene, A. longula Greene, A.maculata Rydberg, A. microdonta Greene, A. procera Greene, A.pubescens Rydberg, A. pumila (Nuttall) Rydberg, A. scorzonerifolia (Schrader)Greene, A. turbinata Rydberg, A. vestita Greene, A. vicinalis Greene, A.villosa Rydberg, Troximon glaucum Pursh, Troximonglaucum var. dasycephalum Torrey & A. GrayAgrostis clavata Trin. none Poaceae G4G5 S1S2Allium victorialis L. Allium victorialis ssp. platyphyllum Hultén Liliaceae G5 S1*Alyssum obovatum (C. A. Mey.) Turcz. Alyssum americanum Greene, A. biovulatum N. Busch, A.Brassicaceae G5 S2S3Ambrosia chamissonis (Lessing) Greenefallax Nyárády, Odontarrhena obovata C. A. Mey.Ambrosia chamissonis var. bipinnatisecta (Lessing) J. T. Howell, Franseriachamissonis Lessing, F. chamissonis ssp. bipinnatisecta (Lessing) Wiggins & StockwellAsteraceae G4G5 S2Antennaria densifolia A. E. Porsild Antennaria ellyae A. E. Porsild Asteraceae G3 S2Antennaria dioica (L.) Gaertner Antennaria hyperborea D. Don, A. insularis Greene, Gnaphalium dioicum L. Asteraceae G5 S2S3Apocynum androsaemifolium L. Apocynum ambigens Greene, A. androsaemifoliumssp. pumilum (A. Gray) B. Boivin, A.androsaemifoliumvar. glabrum Macoun, A. androsaemifoliumvar. griseum (Greene)Bég. & Beloserky, A. androsaemifoliumvar. incanum A. DC., A.androsaemifoliumvar. intermedium Woodson, A. androsaemifoliumvar. pumilum A.Gray, A. androsaemifoliumvar. tomentellum (Greene) B. Boivin, A.androsaemifoliumvar. woodsonii B. Boivin, A. pumilum (A. Gray) Greene, A.pumilum var. rhomboideum (Greene) Bég. & Beloserky, A. scopulorum Greene exRydb.Apocynaceae G5 S3Arenaria longipedunculata Hultén none Caryophyllaceae G3G4Q S3S4Arnica lonchophylla Greene ssp. lonchophylla Arnica angustifolia ssp. lonchophylla (Greene) G. W. Douglas & Ruyle-Douglas Asteraceae G4T4 S1S2Arnica mollis Hooker none Asteraceae G5 S2QArnica ovata Greene Arnica diversifolia Greene, A. latifolia var. viscidula A. Gray Asteraceae G5 S3S4QArtemisia aleutica Hultén none Asteraceae G1 S1StateRankSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐1 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankArtemisia dracunculus L. Artemisia aromatic A. Nelson, A. dracunculina S. Watson, A. dracunculoides Pursh, A.dracunculoides ssp. dracunculina (S. Watson) H. M. Hall & Clements, A. glauca PallasAsteraceae G5 S1S2ex Willdenow, A. glauca var. megacephala B. BoivinArtemisia globularia var. lutea Hultén Artemisia globularia ssp. lutea (Hultén) L. M. Shultz Asteraceae G4TNR S2Artemisia rupestris L. Absinthium viridifolium var. rupestre (L.) Besser, Artemisia rupestris ssp. woodii Neilson Asteraceae G3? SPArtemisia senjavinensis Bess. Ajania senjavinensis (Bess.) Poljakov, Artemisia androsacea Seem. Asteraceae G3 S3Artemisia tanacetifolia L. Artemisia laciniata auct. non Willd., Artemisia laciniatiformis auct. non Kom. Asteraceae GNR S3Asplenium trichomanes ssp. quadrivalens D. E. Meyer none Aspleniaceae G5T5? S2S3Astragalus agrestis Douglas ex G. DonAstragalus danicus var. dasyglottis (Fisch. ex DC.) B. Boivin, AstragalusFabaceae G5 S1Astragalus robbinsii ssp. harringtonii (Rydb.) Barnebydasyglottis Fisch. ex DC., Astragalus goniatus Nutt., Astragalus hypoglottis Hook.Astragalus harringtonii (Rydb.) Coville & Standl. ex Hultén, Astragalusrobbinsii ssp. harringtonii (Rydb.) Hultén, Atelophragma harringtonii Rydb.Fabaceae G5T3 S3Astragalus williamsii Rydb. none Fabaceae G4 S3Bidens tripartita L. Bidens comosa (A. Gray) Wiegand Asteraceae G5 S1Blysmopsis rufa (Hudson) Oteng-YeboahBlysmus rufus (Hudson) Link, Schoenus rufus Hudson, Scirpus rufus (Hudson) Cyperaceae GNR SH*Schrader, S. rufus var. neogaeus FernaldBoechera calderi (G. A. Mulligan) Windham & Al-ShehbazBoechera drepanoloba (Greene) Windham & Al-ShehbazBoechera lemmonii (S. Watson) W. A. Weber Arabis lemmonii S. Watson, A. bracteolata Greene, A. canescens var. latifolia S.Watson, A. codyi G. A. Mulligan, A. egglestonii Rydberg, A. kennedyi Greene, A.latifolia (S. Watson) Piper, A. oreocallis Greene, A. polyclada Greene, A.Arabis calderi G. A. Mulligan Brassicaceae G4? S1Arabis drepanoloba Greene, A. drummondii var. oreophila (Rydberg) M. Hopkins, A.lemmonii var. drepanoloba (Greene) Rollins, A. oreophila Rydbergsemisepulta GreeneBrassicaceae G4? S1Brassicaceae G5 S1S2Bolboschoenus maritimus ssp. paludosus (A. Nelson) Schoenoplectus maritimus (L.) Lye, Scirpus maritimus L. Cyperaceae GNRTNR S3*T. KoyamaBotrychium alaskense Wagner & Grant none Ophioglossaceae G2G3 S3Botrychium ascendens W. H. Wagner none Ophioglossaceae G2G3 S2S3Botrychium lineare W. H. Wagner none Ophioglossaceae G2? S1Botrychium montanum W. H. Wagner none Ophioglossacea G3 S1Botrychium robustum Rupr. Botrychium multifidum var. robustum (Rupr.) C. Christens. Ophioglossaceae G4G5 S1S2Botrychium spathulatum W. H. Wagner none Ophioglossaceae G3 S1Botrychium tunux Stensvold & Farrar none Ophioglossaceae G2G3 S2Botrychium virginianum (L.) Swartz Botrypus virginianus (L.) Holub, Botrychium virginianum var. europaeum Ångstr., B.virginianum ssp. europaeum (Ångstr.) R. T. Clausen, Osmunda virginiana LOphioglossaceae G5 S3Botrychium yaaxudakeit Stensvold & Farrar none Ophioglossaceae G2 S2Brasenia schreberi J. F. Gmel. Brasenia peltata Pursh Cabombaceae G5 S1*Cardamine angulata Hook. Cardamine angulata var. alba Torrey & A. Gray, C. angulata var. hirsuta O. E.Schulz, C. angulata var. pentaphylla O. E. Schulz, Dentaria grandiflora RafinesqueBrassicaceae G5 S1S2Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐2 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankCardamine blaisdellii Eastwood Cardamine microphylla ssp. blaisdellii (Eastwood) D. F. Murray & S. Kelso, C.microphylla var. blaisdellii (Eastwood) KhatriBrassicaceae G3G4 S3S4Cardamine microphylla M. F. Adams Cardamine microphylla M. F. Adams aff. microphylla, Cardamine minuta Willd. ex. DC. Brassicaceae G3G4 S2Cardamine pensylvanica Muhl. ex Willd. Cardamine flexuosa ssp. pensylvanica (Muhl. ex Willd.) O. E. Schulz, C.hirsuta var. pensylvanica (Muhl. ex Willd.) P. W. Graff, C. multifolia Rydberg, C.Brassicaceae G5 S1pensylvanica var. brittoniana Farwell, C. rotundifolia var. diversifolia O. E.Schulz, Dracamine pensylvanica (Muhl. ex Willd.) NieuwlandCarex adelostoma V. I. Krecz. Carex buxbaumii var. alpicola Hartman, C. buxbaumii var. alpina Hartman, C.buxbaumii var. mutica Hartman, C. buxbaumii ssp. mutica (Hartman) Isoviita, C.Cyperaceae G4 S1S2*morrisseyi A. E. PorsildCarex atherodes Spreng. none Cyperaceae G5 S3S4*Carex athrostachya Olney none Cyperaceae G5 S1*Carex atratiformis Britt. C. atrata L. ssp. atratiformis (Britt.) Kükenthal, C. atratiformis ssp. raymondii (Calder) A. Cyperaceae G5 S3*E. Porsild, C. ovata Rudge, C. raymondii CalderCarex bebbii Olney ex Fernald Carex tribuloides var. bebbii L. H. Bailey Cyperaceae G5 S1S2*Carex brunnescens ssp. alaskana Kalela none Cyperaceae G5T3T4 SU*Carex deflexa Hornem. var. deflexa Carex deflexa var. deanii L. H. Bailey Cyperaceae G5 S2S3*Carex deweyana Schwein. var. deweyana none Cyperaceae G5 S2S3*Carex eburnea Boott none Cyperaceae G5 S3*Carex echinata Murray ssp. echinata Carex angustior Mack., C. angustior var. gracilenta R. T. Clausen & Wahl, C.cephalantha (L. H. Bailey) E. P. Bicknell, C. echinata var. angustata (Carey) Bailey, C.hawaiiensis H. St. John, C. josselynii (Fern.) Mack. ex Pease, C. laricina Mack. exBright, C. leersii Willd., C. muricata var. angustata (Carey) Carey ex Gleason, C.muricata var. cephalantha (Bailey) Wieg. & Eames, C. muricata var. laricina (Mack. exBright) Gleason, C. ormantha (Fern.) Mack., C. phyllomanica var. angustata (Carey)Boivin, C. phyllomanica var. ormantha (Fern.) Boivin, C. stellulata, C.svensonis Skottsb.Cyperaceae G5T5 S1S2*Carex glareosa ssp. pribylovensis (Macoun) G.Carex lagopina var. pribylovensis (Macoun) Kükenthal, C. pribylovensis Macoun Cyperaceae G4G5T2T3 S2*Halliday & ChaterCarex heleonastes Ehrh. ex L. f. Carex carltonia Dewey, C. curta var. robustior (Kük.) B. Boivin, C. heleonastes L. Cyperaceae G4f. ssp. heleonastes, C. heleonastes ssp. neurochlaena (T. Holm) Böcher, C.S3*neurochlaena T. HolmCarex hoodii Boott none Cyperaceae G5 S1*Carex interior L. H. Bailey Carex interior ssp. charlestonensis Clokey, C. interior ssp. keweenawensis F. J. Herm. Cyperaceae G5 S3*Carex lapponica O. Lang Carex canescens var. subloliacea Laestadius Cyperaceae G4G5Q S3S4*Carex laxa Wahlenberg none Cyperaceae G5? S1S2*Carex leptalea ssp. pacifica Calder & R. L. Taylor Carex jimcalderi B. Boivin Cyperaceae G5T4T5 SU*Carex parryana Dewey Carex arctica Dewey, C. parryana ssp. hallii (Olney) D. F. Murray, C.parryana ssp. idahoa (L. H. Bailey) D. F. Murray, C. parryana var. brevisquama F. J.Herm., C. parryana var. hallii (Olney) Kük., C. parryana Dewey var. parryana, C.parryana var. unica L. H. BaileyCyperaceae G4 S2*Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐3 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankCarex peckii HoweCyperaceae G4G5 S2*Carex clivicola Fernald & Weatherby, C. nigromarginata var. elliptica (Boott)Gleason, C. nigromarginata var. minor (Boott) GleasonCarex phaeocephala Piper none Cyperaceae G4 S3*Carex praegracilis W. Boott Carex camporum Mack. Cyperaceae G4 SP*Carex preslii Steud. none Cyperaceae G4 S1*Carex sabulosa ssp. leiophylla (Mack.) A. E. Porsild Carex leiophylla Mack Cyperaceae G5 SP*Carex sartwellii Dewey Carex sartwellii Dewey var. sartwellii, C. sartwellii var. stenorrhyncha F. J. Herm. Cyperaceae G4G5 SP*Carex sprengelii Dewey ex Spreng. Carex longirostris Torrey Cyperaceae G5? S1*Carex stipata Muhl. ex Willd. var. stipata Carex stipata var. crassicurta Peck, C. stipata var. subsecuta Peck Cyperaceae G5 S2*Carex sychnocephala J. Carey none Cyperaceae G4 S2*Carex tahoensis Smiley Carex eastwoodiana Stacey Cyperaceae G3G4Q S1*Carex xerantica L. H. Bailey none Cyperaceae G5 S1*Castilleja hyetophila Pennell none Orobanchaceae G4G5 S2S3*Castilleja miniata ssp. dixonii (Fernald) Kartesz Castilleja dixonii Fernald, Castilleja miniata var. dixonii (Fernald) A. Neslon & J. F. Orobanchaceae G5TNR SU*Macbr.Catabrosa aquatica (L.) P. Beauv. Aira aquatica L. Poaceae G5 S1S2Cerastium aleuticum Hultén Cerastium beeringianum var. aleuticum (Hultén) S. L. Welsh Caryophyllaceae G3 S3Ceratophyllum demersum L. Ceratophyllum apiculatum Cham., C. demersum var. apiculatum (Cham.) Aschers., C. Ceratophyllaceae G5 S3S4Chamaerhodos erecta (L.) BungeChenopodium glaucum var. salinum (Standley) B.BoivinChimaphila umbellata (L.) W. P. C.Barton ssp. umbellatademersum var. apiculatum (Cham.) GarckeChamaerhodos erecta var. nuttallii Pickering ex Rydb., C. erecta var. parviflora (Nutt.)C. L. Hitchc., C. nuttallii Pickering ex Rydb., C.nuttallii var. keweenawensis Fern., Sibbaldia erecta L.Rosaceae G5 S2S3*Chenopodium glaucum (Standley) Aellen, C. salinum Standley Chenopodiaceae G5T5 S3S4Chimaphila acuta Rydb., C. occidentalis Rydb., C. umbellata ssp. acuta (Rydb.)Hultén, C. umbellata var. acuta (Rydb.) S. F. Blake, C. umbellata ssp. cisatlantica (S. F.Blake) Hultén, C. umbellata var. cisatlantica S. F. Blake, C.umbellata ssp. occidentalis (Rydb.) Hultén, C. umbellata var. occidentalis (Rydb.) S. F.BlakeEricaceae G5T5 S2*Chrysosplenium rosendahlii Packer Chrysosplenium alternifolium var. rosendahlii (Packer) B. Boivin Saxifragaceae G4G5Q S1S2*Cicuta bulbifera L. none Apiaceae G5 S3Cirsium edule var. macounii (Greene) D. J. Keil Carduus macounii Greene, Cirsium macounii (Greene) Petrak Asteraceae G4TNR SUCirsium kamtschaticum Ledeb. ex DC. none Asteraceae G3? S2Claytonia arctica Adams none Portulacaceae G3 S1S2Claytonia ogilviensis McNeill none Portulaceae G1 SPCochlearia sessilifolia Rollins Cochlearia officinalis var. sessilifolia (Rollins) Hultén Brassicaceae G1G2Q S2QCorispermum ochotense IgnatovCorispermum ochotense var. alaskanum Mosyakin, C. ochotense Ignatovvar. ochotenseChenopodiaceae G3G4 S3Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐4 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankCrassula aquatica (L.) SchönlandCrassulaceae G5 S1S2Bulliarda aquatica (L.) DC., Crassula saginoides (Maximowicz) M. Bywater &Wickens, Hydrophila aquatica (L.) House, Tillaea angustifolia Nutt., T. aquatica L., T.ascendens Eat., Tillaeastrum aquaticum (L.) Britt.Crataegus suksdorfii (Sarge) Kruschke Crataegus douglasii var. suksdorfii Sarg. Rosaceae GNR SH*Cryptantha shackletteana L. C. Higgins Cryptantha shacklettiana L. C. Higgins Boraginaceae G1Q S1Cryptogramma stelleri (S. G. Gmel.) Prantl Pteris stelleri S.G. Gmel. Pteridaceae G5 S3S4Cypripedium montanum Douglas ex Lindl. none Orchidaceae G4 S2*Cypripedium parviflorum var. exiliens Sheviak none Orchidaceae G5 S2S3*Cypripedium parviflorum var. pubescens (Willd.)KnightCypripedium calceolus var. planipetalum (Fernald) Victorin & J. Rousseau, C.calceolus var. pubescens (Willd.) Correll, C. flavescens DC., C.parviflorum var. planipetalum Fernald, C. pubescens Willd., C. veganum Cockerell, P.Barker & M. BarkerCypripedium yatabeanum Makino Cypripedium guttatum ssp. yatabeanum (Makino) Hultén, C.guttatum var. yatabeanum (Makino) PfitzerOrchidaceae G5TNR S1*Orchidaceae GNR S1*Cypripedium x alaskanum P. M. Brown none Orchidaceae GNR S1S2*Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. Avena spicata L. Poaceae G5 S1Douglasia arctica Hook. Douglasia nivalis var. glabra Duby Primulaceae G3 S3*Douglasia beringensis S. Kelso, Jurtzev, & D. F. Murray Androsace beringensis (S. Kelso, Jurtzev, & D. F. Murray) Cubey Primulaceae G2 S2Douglasia laevigata A. GrayAndrosace laevigata (A. Gray) Wendelbo, Doulgasialaevigata ssp. ciliolata (Constance) Calder & Roy L. Taylor, D.laevigata var. ciliolata ConstancePrimulaceae G3 SP*Draba aleutica Ekman Draba behringii Tolmatchev Brassicaceae G2 S2Draba chamissonis G. Don Draba frigida var. kamtschatica Ledeb., D. kamtschatica (Ledeb.) N. Busch, D. Brassicaceae GNR S1Qlonchocarpa ssp. kamtschatica (Ledeb.) Calder & R. L. Taylor, D.Draba densifolia NuttallDraba incerta Paysonnivalis var. kamtschatica (Ledeb.) PohleDraba caeruleomontana Payson & H. St. John, D. caeruleomontana var. piperi Payson& H. St. John, D. glacialis var. pectinata S. Watson, D. globosa var. sphaerula (J. F.Macbride & Payson) O. E. Schulz, D. mulfordiae Payson, D. nelsonii J. F. Macbride &Payson, D. oligosperma var. pectinata (S. Watson) Jepson, D. pectinata (S. Watson)Rydberg, D. sphaerula J. F. Macbride & PaysonDraba exalata E. Ekman, D. incerta var. laevicapsula (Payson) Payson & H. St.John, D. incerta var. peasei (Fernald) Rollins, D. laevicapsula Payson, D.peasei FernaldBrassicaceae G5 S2S3QBrassicaceae G5 S3Draba macounii O. E. Schulz none Brassicaceae G3G4 S3Draba micropetala Hook.Brassicaceae GNR S1S2Draba adamsii auct. non Ledeb., Draba alpina var. micropetala Durand, Drabaoblongata auct. non R. Brown ex DC., D. oblongata ssp. minuta V. V. Petrovsky, D.pauciflora var. micropetala (Hooker) O. E. SchulzDraba mulliganii Al-Shehbaz none Brassicaceae GNR S3Draba murrayi G. A. Mulligan none Brassicaceae G2 S2S3Draba ogilviensis Hultén none Brassicaceae G3 S1Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐5 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankDraba pauciflora R. Brown Draba adamsii Ledeb., D. micropetala auct. non Hook., D. oblongata auct. non R.Brown ex DC.Brassicaceae G4 S2Draba praealta Greene Draba cascadensis Payson & H. St. John, D. columbiana Rydberg, D. dolichopoda O.E. Schulz, D. lapilutea A. Nelson, D. lonchocarpa var. dasycarpa O. E. Schulz, D.praealta var. yellowstonensis (A. Nelson) O. E. Schulz, D. yellowstonensis A. NelsonBrassicaceae G5 S1QDraba subcapitata Simmons none Brassicaceae G4 S1S2Draba yukonensis A. E. Porsild none Brassicaceae G1 SPEleocharis nitida Fernald none Cyperaceae G3G4 S1S2*Eleocharisquinqueflora ssp. fernaldii (Svenson) HulténElymus lanceolatus ssp. psammophilus (J. M. Gillett &H. Senn) A. LöveEleocharis pauciflora var. fernaldii Svenson Cyperaceae G5 S2*Agropyron dasystachyum var. psammophilum (J. M. Gillett & H. Senn) E. G. Voss, A.psammophilum J. M. Gillett & H. Senn, A. psammophilum f. aristatum J. M. Gillett & H.Senn, Elymus calderi Barkworth, Elytrigia dasystachya var. psammophila (J. M. Gillett& H. Senn) Cronquist, E. dasystachya ssp. psammophila (J. M. Gillett & H. Senn) D. R.DeweyPoaceae G3G4 S1S2Erigeron acris ssp. kamtschaticus (DC.) H. Hara Erigeron kamtschaticus DC., Erigeron acris var. kamtschaticus (DC.) Herder Asteraceae G5T4T5 SPErigeron muirii A. Gray Erigeron grandiflorus ssp. muirii (A. Gray) Hultén Asteraceae G2 S2S3Erigeron ochroleucus Nutt. Erigeron laetevirens Rydberg, E. montanus Rydberg, E.ochroleucus var. scribneri (Canby ex Rydberg) Cronquist, E. scribneri Canby exRydberg, E. tweedyanus Canby & RoseAsteraceae G5 S1S2Erigeron porsildii G. L. Nesom & D. F. Murray Erigeron grandiflorus ssp. arcticus A. E. Porsild, not E. arcticus Rouy Asteraceae G3G4 S3S4Erigeron yukonensis Rydberg Erigeron glabellus var. yukonensis (Rydberg.) Hultén Asteraceae G2G4 SUEriogonum flavum var. aquilinum Reveal none Polygonaceae G5T2 S2Eriophorum viridicarinatum (Engelm.) Fernald Eriophorum latifolium var. viridicarinatum Engelm. Cyperaceae G5 S2S3*Erysimum capitatum var. purshii (Durand) Rollins Erysimum asperum var. purshii Durand, Cheiranthus alpestris (Cockerell) A. Heller, C.argillosus Greene, C. aridus A. Nelson, C. asperrimus Greene, C. bakeri Greene, C.Brassicaceae G5T1 S2nivalis Greene, C. nivalis var. amoenus Greene, C. oblanceolatus (Rydberg) A.Heller, C. radicatus (Rydberg) A. Heller, Cheirinia amoena (Greene) Rydberg, C.argillosa (Greene) Rydberg, C. arida (A. Nelson) Rydberg, C. asperrima (Greene)Rydberg, C. bakeri (Greene) Rydberg, C. brachycarpa Rydberg, C.cockerelliana (Daniels) Cockerell, C. desertorum Wooton & Standley, C.nivalis (Greene) Rydberg, C. nivalis var. radicata (Rydberg) Cockerell, C.oblanceolata (Rydberg) Rydberg, C. radicata (Rydberg) Rydberg, E.amoenum (Greene) Rydberg, E. angustatum Rydberg, E. argillosum (Greene)Rydberg, E. aridum (A. Nelson) A. Nelson, E. asperrimum (Greene) Rydberg, E.asperum var. amoenum (Greene) Reveal, E. asperum var. angustatum (Rydberg) B.Boivin, E. asperum var. pumilum S. Watson, E. bakeri (Greene) Rydberg, E.capitatum var. amoenum (Greene) R. J. Davis, E. capitatum var. argillosum (Greene)R. J. Davis, E. capitatum var. nivale (Greene) N. H. Holmgren, E.cockerellianum Daniels, E. desertorum (Wooton & Standley) Rossbach, E.nivale (Greene) Rydberg, E. oblanceolatum Rydberg, E. radicatum RydbergFestuca edlundiae S. Aiken, Consaul, & Lefkovich none Poaceae G3G4 S1Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐6 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankFestuca minutiflora Rydb.Poaceae G5 S1Festuca brachyphylla var. endotera (St. Yves) Litard., Festucaovina var. minutiflora (Rydb.) J. T. Howell.Festuca occidentalis Hook. Festuca ovina var. polyphylla Vasey ex Beal Poaceae G5 S1Festuca viviparoidea Krajina exFestuca vivipara ssp. glabra Fred. Poaceae G4G5T4T5 SUPavlick ssp. viviparoideaFestuca viviparoidea ssp. krajinae Pavlick Festuca vivipara ssp. glabra Fred. Poaceae G4G5TNR SUGaultheria pyroloides Hook. & Thomson ex Miquel Gaultheria miqueliana Takeda Ericaceae G3G4 S1*Gentianella auriculata (Pall.) J. M. Gillett none Gentianaceae G4G5 S1*Gentianella propinqua ssp. aleutica (Cham. & Schltdl.)J. M. GillettGentianopsis barbata (Froel.) Ma ssp. barbataGentiana aleutica Cham. & Schltdl., Gentianella propinqua var. aleutica (Cham. &Schltdl.) S. L. WelshGentianella detonsa ssp. yukonensis J. M. Gillett, Gentianopsisdetonsa ssp. yukonensis (J. M. Gillett) J. M. GillettGentianaceae G5T2T4 S3*Gentianaceae GNR S3QGentianopsis richardsonii (A. E. Porsild) Gentiana richardsonii A. E. Porsild Gentianaceae GNR S1S2Geum aleppicum ssp. strictum (Aiton) R. T. ClausenRosaceae G5T5 S3*Geum decurrens Rydb., G. strictum Aiton, G. strictum var. decurrens (Rydb.) Kearney& PeeblesGeum schofieldii Calder & R. L. Taylor none Rosaceae GNR SPQ*Geum x macranthum (Kearney) B. Boivin Acomastylis macrantha (Kearney) Bolle, Sieversia x macrantha Rosaceae GNA S1Glehnia littoralis ssp. leiocarpa (Math.) Hult. Glehnia leiocarpa Math. Apiaceae G5T5 S2S3Glyceria leptostachya Buckley Glyceria davyi (Merr.) Tzelev, Panicularia davyi Merr., P. leptostachya (Buckley) Piper Poaceae G3 S3Glyceria pulchella (Nash.) K. Schum. Panicularia pulchella Nash Poaceae G5 S3S4Glyceria striata (Lam.) Hitchc. Glyceria elata (Nash ex Rydb.) M. E. Jones, G. nervata (Willd.) Trin., G.striata ssp. stricta (Scribn.) Hultén, G. striata var. stricta (Scribn.) Fernald, Panicularianervata (Willd.) Kuntze, P. striata (Lam.) Hitchc.Isoetes occidentalis L. F. Hend. Isoetes flettii (A. A. Eaton) N. E. Pfeiffer, Isoetes lacustris ssp. paupercula (Engelm.) J.Feilberg, Isoetes lacustris var. paupercula Engelm., Isoetes paupercula (Engelm.) A. A.Eaton, Isoetes piperi A. A. EatonIsolepis cernua (Vahl) Roem. & Schult. var. cernua Scirpus cernuus Vahl, S. cernuus ssp. californicus (Torr.) Thorne, S.Juncus articulatus L.cernuus var. californicus (Torr.) BeetleJuncus articulatus var. obtusatus Engelm., J. articulatus var. stolonifer (Wohlleben)House, J. lampocarpus Ehrhart ex HoffmannPoaceae G5 S3Isoetaceae G4G5 S3S4*Cyperaceae G5 S1*Juncaceae G5 S1S2*Juncus nodosus L. Juncus nodosus var. meridionalis F. J. Hermann, J. rostkovii E. Meyer Juncaceae G5 S1S2*Juncus tenuis Willd. Juncus bicornis Michaux, J. bicornis var. williamsii (Fernald) Victorin, J. macer Gray, J.macer f. williamsii (Fernald) F. J. Hermann, J. macer var. williamsii (Fernald) Fernald, J.Juncaceae G5 S2*tenuis var. bicornis (Michaux) E. Meyer, J. tenuis var. multicornis E. Meyer, J.tenuis var. williamsii FernaldJuniperus horizontalis Moench Juniperus horizontalis var. douglasii hort., J. horizontalis var. variegata Beissner Cupressaceae G5 S3Koeleria asiatica Domin Koeleria cairnesiana Hultén Poaceae G4 S3Koeleria macrantha (Ledeb.) Schult. Koeleria cristata var. longifolia Vasey ex Burtt Davy, K.Poaceae G5 S1cristata var. pinetorum Abrams, K. gracilis Pers., K. nitida Nutt., K. yukonensis HulténLactuca biennis (Moench) Fernald Sonchus biennis Moench Asteraceae G5 S2S3Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐7 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankLathyrus ochroleucus Hook. none Fabaceae G5 SHLewisia pygmaea (A. Gray) B. L. Robinson Talinum pygmaeum A. Gray, Calandrinia grayi Britt., C. pygmaea (A. Gray) A.Gray, Lewisia exarticulata H. St. John, L. glandulosa (Rydb.) Clay, L. minima (A.Portulacaceae G5 SPNelson) A. Nelson, L. pygmaea var. aridorum Bartlett, L.pygmaea ssp. glandulosa (Rydb.) Ferris, L. sierrae Ferris, Oreobromaaridorum (Bartlett) A. Heller, O. exarticulatum (H. St. John) Rydb., O.glandulosum Rydb., O. grayi (Britt.) Rydb., O. minimum A. Nelson, O. pygmaeum (A.Gray) HowellLigusticum calderi Math. & Const. none Apiaceae G3G4 S2Limosella aquatica L. none Plantaginaceae G5 S3Lobelia dortmanna L. none Campanulaceae G4G5 S1S2Lonicera involucrata (Richardson) Banks none Caprifoliaceae G4G5 S3Lupinus kuschei Eastwood Lupinus sericeus var. kuschei (Eastwood) Boivin Fabaceae G3G4 S2Luzula comosa E. Meyer Luzula campestris var. comosa (E. Meyer) Fernald & Wiegand, L.campestris var. columbiana H. St. John, L. campestris var. macrantha (S. Watson)Fernald & Wiegand, L. comosa var. congesta (Thuillier) S. Watson, L.comosa var. laxa Buchenau, L. comosa var. macrantha S. Watson, L.comosa var. subsessilis S. Watson, L. intermedia (Thuillier) A. Nelson, L.multiflora ssp. comosa (E. Meyer) Hultén, L. multiflora ssp. congesta (Thuillier)Hylander, L. subsessilis BuchenauJuncaceae G4G5 S1*Lycopodiella inundata (L.) Holub. Lepidotis inundata (L.) Börner, Lycopodium inundatum L. Lycopodiaceae G5 S3*Lycopus asper Greene Lycopus lucidus ssp. americanus (A. Gray) Hultén, L. lucidus var. americanus A. Gray Lamiaceae G5 S1*Lycopus uniflorus Michx. none Lamiaceae G5 S3S4*Maianthemum racemosum ssp. amplexicaule (Nutt.)LaFrankieMaianthemum stellatum (L.) LinkMaianthemum amplexicaule (Nutt.) W. A. Weber, M.racemosum var. amplexicaule (Nutt.) Dorn, Smilacina amplexicaulis Nutt., S.amplexicaulis var. glabra J. F. Macbr., S. amplexicaulis var. jenkinsii Boivin, S.amplexicaulis var. ovata Boivin, S. racemosa var. amplexicaulis (Nutt.) S. Watson, S.racemosa var. brachystyla G. Henderson, S. racemosa var. glabra (J. F. Macbr.) St.John, S. racemosa var. jenkinsii (Boivin) Boivin, Unifolium amplexicaule (Nutt.)Greene, Vagnera amplexicaulis (Nutt.) Greene, V. amplexicaulis var. glabra (J. F.Macbr.) Abrams, V. pallescens GreeneConvallaria stellata L., Smilacina liliacea (Greene) Wynd, S. sessilifolia Nutt. exBaker, S. stellata (L.) Desf., S. stellata var. crassa Victorin, S.stellata var. mollis Farw., S. stellata var. sessilifolia (Nutt. ex Baker) G. Hend., S.stellata var. sylvatica Victorin & Rouss., Unifolium liliaceum Greene, U.sessilifolium (Nutt. ex Baker) Greene, U. stellatum (L.) Greene, Vagneraliliacea (Greene) Rydb., V. sessilifolia (Nutt. ex Baker) Greene, V. stellata (L.) MorongLiliaceae G5 S1*Liliaceae G5 S3*Malaxis monophyllos (L.) Swartz ssp. monophyllos Malaxis diphyllos Cham., M. monophyllos var. diphyllos (Cham.) Luer Orchidaceae GNRTNR SU*Malaxis monophyllos ssp. brachypoda (A. Gray) F. Malaxis brachypoda (A. Gray) Fernald, Microstylis brachypoda A. Gray Orchidaceae GNRTNR SU*Morris & E. A. EamesMelica subulata (Griseb.) Scribn.Poaceae G5 S2S3Bromelica subulata (Griseb.) Farw., Bromus subulata Griseb., Festuca acerosa Trin. exA. Gray, Melica acuminata Bol., Melica poaeoides var. acuminata Bol.StateRankSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐8 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankMertensia drummondii (Lehm.) G. Don Lithospermum drummondii Lehm. Boraginaceae G2G3 S2Mertensia paniculata var. alaskana (Britton) L. O. none Boraginaceae G5TNR PendingWilliamsMicranthes charlottae (Calder & Savile) Saxifraga nelsoniana ssp. carlottae (Calder & Savile) Hultén, S.Saxifragaceae GNR S2*nelsoniana ssp. charlottae (Calder & Savile) Hultén, S. punctata ssp. carlottae Calder &Micranthes nelsoniana ssp. insularis (Hultén) Elven &D. F. MurraySavile, S. punctata ssp. charlottae Calder & SavileMicranthes nelsoniana var. insularis (Hultén) Gornall & H. Ohba, Saxifragainsularis (Hultén) Sipliv., S. nelsoniana ssp. insularis (Hultén) Hultén, S.punctata ssp. insularis Hultén, S. punctata var. insularis (Hultén) B. BoivinMicranthes nudicaulis (D. Don) Gornall & H.Ohba ssp. nudicaulisMicranthes occidentalis (S. Watson) Small Saxifraga allenii (Small) Fedde, Saxifraga occidentalis S. Watson, S.occidentalis var. allenii (Small) C. L. Hitchcock, S. occidentalis var. wallowensis M.Micranthes porsildiana (Calder & Savile) Elven & D. F.MurraySaxifragaceae GNRTNR S2*Ocrearia nudicaulis (D. Don) Small, Saxifraga nudicaulis D. Don Saxifragaceae G3G4Q S3*Peck, S. reflexa ssp. occidentalis (S. Watson) Hultén, S. saximontana E. E. NelsonMicranthes nelsoniana var. porsildiana (Calder & Savile) Gornall & H. Ohba, Saxifraganelsoniana ssp. porsildiana (Calder & Savile) Hultén, S. porsildiana (Calder & Savile)Jurtz. & V. V. Petrovsky, S. punctata ssp. porsildiana Calder & SavileSaxifragaceae G5 S1*Saxifragaceae G4 S2*Micranthes tolmiei (Torr. & A. Gray) Brouillet & Gornall Saxifraga tolmiei Torr. & A. Gray, S. tolmiei var. ledifolia (Greene) Engl. & Irmsch. Saxifragaceae GNR S2S3*Mimulus lewisii Pursh none Phrymaceae G5 S2S3*Minuartia dawsonensis (Britt.) House Alsinopsis dawsonensis (Britt.) Rydb., Alsinanthe stricta ssp. dawsonensis (Britt.) Á.Löve & D. Löve, Arenaria dawsonensis Britt., A. litorea Fernald, A.Caryophyllaceae G5 S3S4*stricta var. dawsonensis (Britt.) Scoggan, A. stricta ssp. dawsonensis (Britt.)Maguire, A. stricta var. litorea (Fernald) B. Boivin, Minuartia litorea (Fernald)House, Sabulina dawsonensis (Britt.) Rydb.Mitella nuda L. Mitella prostrata Michaux Saxifragaceae G5 S1*Montia vassilievii (Kuzen.) McNeill ssp. vassilieviiClaytonia bostockii A. E. Porsild, C. vassilievii Kuzen., Claytoniella bostockii (A.E.Porsild) Jurtzev, C. vassilievii (Kuzen.) Jurtz., Montia bostockii (A. E. Porsild) S. L.Welsh, Montiastrum bostockii (A. E. Porsild) Ö. Nilsson, M. vassilievii (Kuzen.) Ö.NilssonPortulacaceae GNRTNR S3QMyriophyllum farwellii Morong none Haloragaceae G5 S1*Najas flexilis (Willd.) Rostk. & W. L. E. SchmidtNajadaceae G5 S3*Caulinia flexilis Willd., Najas caespitosa (Maguire) Reveal, N. caespitosus (Maguire)Reveal, N. canadensis Michaux, N. flexilis ssp. caespitosa Maguire, N.flexilis var. congesta Farw., N. flexilis var. robusta MorongOrobanche fasciculata Nutt. Anoplanthus fasciculatus (Nutt.) Walp., Aphyllon fasciculatum (Nutt.) Torr. & A.Gray, Orobanche fasciculata var. franciscana Achey, O. fasciculata var. lutea (Parry)Achey, O. fasciculata var. subulata Goodman, Orobanchefasciculata var. typica Achey, Thalesia fasciculata (Nutt.) Britton, Thalesia lutea (Parry)Rydb.Orobanchaceae G4 S1*Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐9 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankOrobanche uniflora L. Aphyllon uniflorum (L.) Torr. & A. Gray, Orobanche porphyrantha G. Beck, O.purpurea Jacq., O. sedii (Suksd.) Fech., O. terrae-novae Fern., O.Orobanchaceae G5 S1S2*uniflora ssp. occidentalis (Greene) Abrams ex Ferris, O. uniflora var. minuta (Suksd.)G. Beck, O. uniflora var. occidentalis (Greene) Roy L. Taylor & MacBryde, O.uniflora var. purpurea (A. Heller) Achey, O. uniflora var. sedii (Suksdorf) Achey, O.uniflora var. terrae-novae (Fern.) Munz, O. uniflora var. typica Achey, Thalesiauniflora (L.) Britt.Oxygraphis glacialis (Fisch.) Bunge Ficaria glacialis Fisch., Ranunculus kamchaticus DC. Ranunculaceae G4G5 S3Oxytropis arctica var. barnebyana S. L. Welsh Oxytropis sordida var. barnebyana (S. L. Welsh) Jurtzev Fabaceae G4?T2Q SUOxytropis kobukensis S. L. Welsh none Fabaceae G2 S2Oxytropis kokrinensis A. E. Porsild none Fabaceae G3 S3Oxytropis tananensis Jurtzev Oxytropis campestris var. varians (Rydb.) Barneby Fabaceae GNR S3S4QPackera subnuda var. moresbiensis Calder & R. L.Asteraceae GNRT3T4 S3Taylor) TrockPackera moresbiensis (Calder & R. L. Taylor) J. F. Bain, S.cymbalarioides var. moresbiensis (Calder & R. L. Taylor) C. C. Freeman, Seneciocymbalarioides ssp. moresbiensis Calder & R. L. Taylor, S. moresbiensis (Calder & R.L. Taylor) G. W. Douglas & Ruyle-Douglas, S. resedifolius var. moresbiensis (Calder &R. L. Taylor) B. BoivinPapaver gorodkovii Tolmatchew & Petrovsky none Papaveraceae G3 S2S3Parasenecio auriculatus (DC.) J. R. Grant Cacalia auriculata DC., Koyamacalia auriculata (DC.) H. Robinson & Brettell Asteraceae G4? S2Parrya nauruaq Al-Shehbaz, J. R. Grant, R. Lipkin, D. F. none Brassicaceae G2 S1S2Murray, & C. L. ParkerPedicularis groenlandica Retz.Orobanchaceae G5 S2*Elephantella groenlandica (Retz.) Rydb., P. groenlandica ssp. surrecta (Benth.)Piper, P. groenlandica var. surrecta (Benth.) A. GrayPedicularis hirsuta L. none Orobanchaceae G5? S1*Penstemon serrulatus Menzies ex Rees none Plantaginaceae G4 S1Phacelia franklinii (R. Br.) A. Gray none Hydrophyllaceae G5 SPPhacelia mollis J. F. Macbr. none Hydrophyllaceae G2G3 S3Phacelia sericea (Graham) A. Gray Phacelia sericea (Graham) A. Gray ssp. sericea Hydrophyllaceae G5 S2Phippsia concinna (Th. Fr.) Lindeb.Catabrosa concinna Th. Fr., C. concinna ssp. algidiformis Harry Sm., Phippsiaalgida ssp. concinna (Th. Fr.) Á. Löve & D. Löve, P. algida ssp. algidiformis (Harry Sm.)Á. Löve & D. Löve, P. algidiformis (Harry Sm.) TzvelevPoaceae G4 SPPhlox hoodii Richardson Phlox richardsonii Hook., P. sibirica ssp. richardsonii (Hook.) Hultén Polemoniaceae G5 S3Q*Phyllodoce empetriformis (Sm.) D. Don Menziesia empetriformis Sm. Ericaceae G5 S1S2*Phyllospadix serrulatus Rupr. ex Asch. none Potamogetonaceae G4 S3*Physaria calderi (G. A. Mulligan & A. E. Porsild) O'Kane Lesquerella calderi G. A. Mulligan & A. E. Porsild, L. arctica ssp. calderi (G. A. Mulligan Brassicaceae G3G4 S2& A. E. Porsild) Hultén& Al-ShehbazPhysocarpus capitatus (Pursh) Kuntze Physocarpus opulifolius var. tomentellus (Ser.) B. Boivin, Spiraea capitata Pursh Rosaceae G5 S2*Picris hieracioides L.Asteraceae G5 S1Picris hieracioides var. alpina Koidzumi, P. hieracioides ssp. kamtschatica (Ledeb.)HulténSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐10 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankPinus contorta var. latifolia Engelm. ex S. WatsonPinaceae G5T5 SU*Piperia unalascensis (Spreng.) Rydb.Pinus contorta ssp. latifolia (Engelm.) Critchfield, Pinusdivaricata var. hendersonii (Lemmon) B. Boivin, Pinus divaricata var. latifolia (Engelm.ex S. Watson) B. BoivinHabenaria schischmareffiana Cham., H. unalaschensis (Spreng.)S. Watson, Platanthera cooperi (S. Watson) Rydb., P. foetida Geyer ex Hook., P.unalaschcensis (Spreng.) Kurtz, Spiranthes unalascensis Spreng.Orchidaceae G5 S3*Plagiobothrys orientalis (L.) I. M. Johnst. none Boraginaceae G3G4 S3Platanthera orbiculata (Pursh) Lindl. Habenaria orbiculata (Pursh) Torr., H. orbiculata var. lehorsii Fernald, H.orbiculata var. menziesii (Lindl.) Fernald, Lysias orbiculata (Pursh) Rydb., Orchisorbiculata Pursh, Platanthera orbiculata var. lehorsii (Fernald) CatlingOrchidaceae G5 S3S4*Platanthera tipuloides var. behringiana (Rydb.) Hultén Habenaria behringiana (Rydb.) Ames, Limnorchis behringiana Rydb. Orchidaceae G4G5T2? S1S2*Pleuropogon sabinei R. Br. none Poaceae G4G5 S1S2Poa hartzii ssp. alaskana Poa alaskana (Soreng) Tzvelev Poaceae G3G4T1T2 S1S2Poa macrantha Vasey Melica macrantha (Vasey) Beal, Poa douglasii ssp. macrantha (Vasey) D. D. Keck, P.douglasii var. macrantha (Vasey) B. BoivinPoaceae G5 S1S2Poa porsildii Gjærev. none Poaceae G3 S2S3Poa secunda J. Presl ssp. secunda Poaceae G5TNR S1S2Poa secunda ssp. juncifolia (Scribn.) Soreng Poaceae G5TNR SPPodagrostis humilis (Vasey) Björkman Agrostis atrata Rydb., A. hildebrandii Thurb. ex Bol., A. humilis Vasey, A.thurberiana Hitchc., Podagrostis thurberiana (Hitchc.) HulténPoaceae G5 S3Podistera yukonensis Math. & Const. none Apiaceae G2 S1S2Polygonum fowleri B. L. Robinson ssp. fowleri Polygonum buxifolium Nutt. ex Bong. Polygonaceae G5TNR S3S4Polygonum minimum S. Watson Polygonum torreyi S. Watson Polygonaceae G5 S1Polypodium sibiricum Sipliv.Polypodiaceae G5? S3Polypodium vulgare ssp. virginianum sensu Hultén (1962), Polypodium vulgare sensuBöcher et al. (1978)Polystichum aleuticum C. Christens. none Dryopteridaceae G1 S1*Polystichum kruckebergii W. H. Wagner none Dryopteridaceae G4 S1*Polystichum microchlamys (H. Christ) Matsumura Aspidium microchlamys Christ Dryopteridaceae G4? S1*Polystichum setigerum (K. Presl) K. PreslNephrodium setigerum C. Presl, Polystichum braunii (Spenner) Féessp. alaskense (Maxon) Calder & R. L. Taylor, P. braunii var. alaskense (Maxon)HulténDryopteridaceae G3 S3*Potamogeton obtusifolius Mert. & W. D. J. Koch none Potamogetonaceae G5 S3*Potamogeton robbinsii Oakes none Potamogetonaceae G5 S2*Potamogeton subsibiricus HagströmPotamogetonaceae G3G4 S3S4Potamogeton porsildorum Fernald, Potamogeton sibiricus ssp. subsibiricus (Hagström)TzvelevPotentilla drummondii Lehm. Potentilla anomalifolia M. Peck, P. anomalofolia M. Peck Rosaceae G5 S2S3*Potentilla fragiformis Willd. ex Schltdl. none Rosaceae G4 S1S2Potentilla rubricaulis Lehm. Potentilla hookeriana Lehm. Rosaceae G4 SU*Potentilla stipularis L. Potentilla stipularis var. groenlandica T. J. Sørensen Rosaceae G5 S2Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐11 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankPrimula cuneifolia Leded. ssp. cuneifolia Primula cuneifolia var. dubyi Pax, P. cuneifolia var. elongata E. A. Busch Primulaceae G5TNR S1*Primula tschukstchorum Kjellman Primula beringensis (A. E. Porsild) Jurtzev, P. tschuktschorum ssp. beringensis (A. E. PrimulaceaePorsild) Jurtzev & Kozhevnikov, P. tschuktschorum var. beringensis A. E. PorsildG2G3 S3*Puccinellia andersonii Swallen Phippsia andersonii (Swallen) Á. Löve & D. Löve, Puccinellia andersoni Swallen Poaceae G3G5 S1S2*Puccinellia angustata (R. Br.) E. L. Rand & RedfieldAtropis angustata (R. Br.) Griseb., A. angustata (R. Br.) V. I. Krecz., Glyceriaangustata (R. Br.) Fr., G. angustata (R. Br.) Vasey, Glyceriavaginata f. contracta Lange, Panicularia angustata (R. Br.) Scribn., Phippsiaangustata (R. Br.) Á. Löve & D. Löve, Poa angustata R. Br., Puccinellia angustata (R.Br.) Nash, P. contracta (Lange) T. J. Sørensen, P. taimyrensis Roshev.Puccinellia arctica (Hook.) Fernald & Wealth Glyceria arctica Hook., Phippsia agrostidea (T. J. Sørensen) Á. Löve & D. Löve, P.arctica (Hook.) Á. Löve & D. Löve, P. poacea (T.J. Sørensen) Á. Löve & D.Puccinellia vaginata (Lange) Fernald & WealthLöve, Puccinellia poacea T. J. Sørensen, P. agrostidea T. J. SørensenGlyceria vaginata Lange, Phippsia vaginata (Lange) Á. Löve & D. Löve, Puccinelliavaginata var. paradoxa T. J. SørensenPuccinellia vahliana (Liebm.) Scribn. & Merr. Colpodium vahlianum (Liebm.) Nevski, Phippsia vahliana (Liebm.) Á. Löve & D.Puccinellia wrightii (Scribn. & Merr.)Tzvelev ssp. wrightiiRanunculus camissonis Schltdl.Löve, Poa vahliana Liebm.Colpodium wrightii Scribn. & Merr., C. wrightii var. flavum Scribn. & Merr., Phippsiawrightii (Scribn. & Merr.) Á. Löve & D. Löve, Poa wrightii (Scribn. & Merr.) Hitchc.Beckwithia camissonis (Schltdl.) Tolm., B. glacialis ssp. camissonis (Schltdl.) Á. Löve &D. Löve, Ranunculus glacialis ssp. camissonis (Schltdl.) Hultén, R.glacialis var. camissonis (Schltdl.) L. D. BensonPoaceae G4Q S1*Poaceae G4G5 S1Poaceae G4 S1Poaceae G4 S3Poaceae G3G4TNR S3Ranunculaceae GNR S3Ranunculus glacialis ssp. alaskensis Jurtz. Beckwithia glacialis ssp. alaskensis Jurtz. Ranunculaceae G4T2 S1S2Ranunculus ponojensis (Markl.) Ericsson none Ranunculaceae GNR S2Ranunculus sabinei R. Br.Ranunculaceae G4 S1Ranunculus pygmaeus ssp. sabinei (R. Br.) Hultén, Ranunculussabinei var. majusculus TolmatchewRanunculus turneri Greene ssp. turneri Ranunculus occidentalis var. turneri (Greene) L. D. Benson, R.Ranunculaceae G3TNR S2propinquus ssp. turneri (Greene) Jelen. & Derv.Romanzoffia unalaschcensis Cham. none Hydrophyllaceae G3 S3S4Rorippa curvisiliqua (Hook.) Bess. ex Britt. Sisymbrium curvisiliqua Hook., Nasturtium curvisiliqua (Hook.) Nutt., N.curvisiliqua var. lyratum (Nutt.) S. Watson, N. curvisiliqua var. nuttallii S. Watson, N.lyratum Nutt., N. occidentale Greene, N. polymorphum Nutt., Radiculacurvisiliqua (Hook.) Greene, R. lyrata (Nutt.) Greene, R. multicaulis (Greene)Greene, R. nuttallii (S. Watson) Greene, R. occidentalis (Greene) Greene, R.pectinata (A. Nelson) A. Heller, R. polymorpha (Nutt.) Greene, Rorippacurvisiliqua var. lyrata (Nutt.) C. L. Hitchcock, R. curvisiliqua var. nuttallii (S. Watson)Stuckey, R. curvisiliqua var. occidentalis (Greene) Stuckey, R.curvisiliqua var. orientalis Stuckey, R. curvisiliqua var. procumbens Stuckey, R.curvisiliqua var. spatulata Stuckey, R. lyrata (Nutt.) Greene, R. multicaulis Greene, R.nuttallii (S. Watson) Rydberg, R. occidentalis (Greene) Greene, R. pectinata A.Nelson, R. polymorpha (Nutt.) HowellBrassicaceae G5 S1S2Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐12 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankStateRankRosa woodsii Lindl. ssp. woodsii Rosa adenosepala Wooton & Standl., R. demareei E. J. Palmer, R. fendleri Crép., R.hypoleuca Wooton & Standl., R. macounii Greene, R. standleyi Rydb., R.terrens Lunell, R. woodsii var. adenosepala (Wooton & Standl.) W. C. Martin & C. R.Hutchins, R. woodsii var. fendleri (Crép.) Rydb., R. woodsii var. hypoleuca (Wooton &Standl.) W. C. Martin & C. R. Hutchins, R. woodsii var. macounii (Greene) W. C. Martin& C. R. Hutchins, R. woodsii var. terrens (Lunell) Breitung, R. woodsii Lindl.Rosaceae G5T5 S2S3*Rumex aureostigmaticus Kom.var. woodsiiAcetosella aureostigmatica (Kom.) Tzvelev, Rumexacetosella var. subspathulatus Trautv., Rumexgraminifolius var. subspathulatus (Trautv.) TolmatchewPolygonaceae GNR S1Rumex beringensis Petrovsky Acetosella beringensis (Jurtz. & V.V. Petrovsky) Á. Löve & D. Löve Polygonaceae G3 S3Rumex krausei V. V. Petrovsky none Polygonaceae G2 S2S3Salix athabascensis Raup. Salix fallax Raup, S. pedicellaris var. athabascensis (Raup) B. Boivin Salicaceae G4G5 S2*Salix candida Flüggé ex Willd. Salix candida var. denudata Andersson, S. candida var. tomentosa Andersson, S.candidula Niewl., S. x clarkei BebbSalicaceae G5 S3Salix hookeriana Barratt ex Hook. Salix amplifolia Coville, S. hookeriana var. laurifolia J. K. Henry, S.Salicaceae G5 S2S3*hookeriana var. tomentosa J. K. Henry ex C. K. Schneider, S. piperi BebbSalix nummularia Andersson Salix nummularia ssp. tundricola (Schljakov) Á. Löve & D. Löve Salicaceae G5 SHSalix planifolia Pursh Salix monica Bebb, S. phylicifolia var. monica (Bebb) Jepson, S.phylicifolia ssp. planifolia (Pursh) Hiitonen, S. planifolia var. monica (Bebb) C. K.Salix prolixa AnderssonSchneiderSalix cordata var. mackenzieana Hook., S. eriocephala ssp. mackenzieana (Hook.)Dorn, S. mackenzieana (Hook.) Barratt ex Andersson, S.mackenzieana var. macrogemma C. R. Ball, S. rigida var. mackenzieana (Hook.)Cronquist, S. rigida var. macrogemma (C. R. Ball) CronquistSalicaceae G5T5 S2*Salicaceae G5 S1Saussurea americana D. C. Eaton none Asteraceae G5 S2S3Saussurea triangulata Trautvetter & C. A. Meyer none Asteraceae GNR S1Saxifraga adscendens ssp. oregonensis (Raf.) Bacig.Saxifragaceae G5T4T5 S2S3Muscaria adscendens (L.) Sm., Saxifraga adscendens var. oregonensis (Raf.)Breitung, S. oregonensis (Raf.) A. NelsonSaxifraga aizoides L. Leptasea aizoides (L.) Haw. Saxifragaceae G5 S1Saxifraga rivularis ssp. arctolitoralis (Jurtzev & V. V. Saxifraga arctolitoralis Jurtzev & V. V. Petrovsky Saxifragaceae G5T2T3 S2*Petrovsky) M. H. Jørgensen & ElvenSaxifraga rivularis subsp. arctolitoralis (Jurtzev & V. Saxifraga arctolitoralis Jurtzev & V. V. Petrovsky Saxifragaceae G5T2T3 PendingV. Petrovsky) M. H. Jørgensen & ElvenSaxifraga taylorii Calder & Savile Saxifraga taylori Calder & Savile Saxifragaceae G3G4 SPSchizachne purpurascens (Torr.) SwallenPoaceae G5 S2Avena striata Michx., A. striata f. albicans Fernald, A. torreyi Nash, Bromelicastriata (Hitchc.) Farw., Melica purpurascens (Torr.) Hitchc., M. striata Hitchc., M.striata f. albicans (Fernald) Fernald, Schizachne purpurascens f. albicans (Fernald)Fernald, S. purpurascens var. pubescens Dore, S. striata (Hitchc.) Hultén, S.stricta (Michx.) Hultén, Trisetum purpurascens Torr.Schoenoplectus pungens (Vahl) Palla Scirpus pungens Vahl Cyperaceae G4G5 S1*Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐13 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankSchoenoplectus subterminalis (Torr.) Soják Scirpus subterminalis Torr. Cyperaceae G4G5 S2*Scolochloa festucacea (Willd.) LinkPoaceae G5 S1Aira arundinacea Lilj. ex Roem & Schult., Arundo festucacea Willd., Donaxborealis Trin., D. festucaceus (Willd.) P. Beauv., Festuca borealis (Trin.) Mert. & Kochex Röhl., F. donacina Wahlenb., Fluminia arundinacea (Roem. & Schult.) Fr., F.festucacea (Willd.) Hitchc., Glyceria arundinacea (Roem. & Schult.) Fr., Graphephorumarundinaceum (Roem. & Schult.) Asch., G. festucaceum (Willd.) A. Gray, Schedonorusarundinaceus Roem. & Schult., Scolochloa arundinacea (Roem. & Schult.)MacMill., Triodia festucacea (Willd.) RothSedum divergens S. Watson Amerosedum divergens (S. Watson) A. Löve & D. Löve Crassulaceae G5? S1Sedum lanceolatum Torr. var. lanceolatum Sedum stenopetalum var. subalpinum Fröderström Crassulaceae G5T3T5 SPSedum oreganum Nutt. var. oreganum Breitungia oregana (Nutt.) A. Löve & D. Löve, Gormania oregana (Nutt.) Britt. Crassulaceae G5TNR SHSenecio cannabifolius Less. Jacobaea cannabifolia (Less.) E. Wiebe, Senecio palmatus Pallas ex Ledeb. Asteraceae G4? S2Sidalcea hendersonii S. Watson none Malvaceae G3 S1*Sieversia pentapetala (L.) Greene Dryas pentapetala L., Geum pentapetalum (L.) Makino Rosaceae G3G4 S2S3*Silene uralensis ssp. ogilviensis (A. E. Porsild) D. F. Gastrolychnis soczavana ssp. ogilviensis (A. E. Porsild) Á. Löve & D. Löve, Melandrium Caryophyllaceae G4G5T2 S1Q*apetalum ssp. ogilviense A. E. PorsildBruntSisyrinchium montanum Greene var. montanum Sisyrinchium alpestre E. P. Bicknell, S. heterocarpum E. P. Bicknell Iridaceae G5 S1*Smelowskia johnsonii G. A. Mulligan none Brassicaceae G1 S1Smelowskia media (W. H. Drury & Rollins) Velichkin Smelowskia calycina var. media W. H. Drury & Rollins Brassicaceae GNR S2S3Smelowskia pyriformis W. H. Drury & Rollins none Brassicaceae G2 S3Sphenopholis intermedia (Rydb.) Rydb. Aira capillacea Frank ex Steud., A. controversa Steud., Eatonia intermedia Rydb., E.pensylvanica var. major (Torr.) A. Gray, Koeleria pensylvanica var. major (Torr.)Torr., K. truncata var. major Torr., Reboulea pallens var. major (Torr.) Farw., Rebouleapensylvanica var. major (Torr.) A. Gray, Sphenopholis intermedia var. pilosa Dore, S.obtusata var. major (Torr.) Erdman, S. pallens ssp. major (Torr.) Scribn., S.pallens var. major (Torr.) Scribn. ex B. L. Rob., Vilfa alba BuckleyPoaceae G5 S1Stachys mexicana Benth. Stachys ciliata Douglas ex Benth., S. emersonii Piper, S. pubens (A. Gray) A. Heller Lamiaceae G5 S1*Stellaria ruscifolia ssp. aleutica Hultén none Caryophyllaceae G4T3 S2S3*Stellaria umbellata Turczaninow Alsine baicalensis Coville, Stellaria gonomischa B. Boivin, S. weberi B. Boivin Caryophyllaceae G5 S3S4Suaeda calceoliformis (Hook.) Moq. Chenopodium calceoliforme Hook., Suaeda americana (Pers.) Fernald, S.Chenopodiaceae G5 S1S2depressa var. erecta S. Watson, S. erecta A. NelsonSymphoricarpos albus (L.) S. F. Blake none Caprifoliaceae G5 S2Symphyotrichum falcatum (Lindl.) G. L.Nesom var. falcatumSymphyotrichum pygmaeum (Lindl.) Brouillet & Selliah Aster pygmaeus Lindl., A. sibiricus ssp. pygmaeus (Lindl.) Á. Löve & D. Löve, A.sibiricus var. pygmaeus (Lindl.) Cody, Eurybia pygmaea (Lindl.) G. L. NesomAsteraceae G2G4 S2Symphyotrichum yukonense (Cronquist) G. L. Nesom Aster yukonensis Cronquist, Virgulus yukonensis (Cronquist) Reveal & Keener Asteraceae G3 S3Aster elegantulus A. E. Porsild, A. falcatus Lindl., A. ramulosus Lindl. Asteraceae G5T4T5 S1S2Taxus brevifolia Nutt. Taxus baccata ssp. brevifolia (Nutt.) Pilger, T. baccata var. brevifolia (Nutt.) Koehne, T.baccata var. canadensis Bentham, T. bourcieri Carrière, T. lindleyana A. MurrayTaxaceae G4G5 S3*StateRankSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐14 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable B‐1. Alaska Natural Heritage Program 2012 Rare Vascular Plant List (continued)Scientific Name and Authority Synonyms FamilyGlobalRankThalictrum minus ssp. kemense (Fr.) Cajander Thalictrum flavum var. rotundifolium Wahlenb., Thalictrum hultenii B. Boivin Ranunculaceae GNR S2Thalictrum occidentale A. GrayRanunculaceae G5 S2S3Thalictrum occidentale var. macounii B. Boivin, T. occidentale var. palousense H. St.JohnTiarella trifoliata var. laciniata (Hook.) Wheelock Tiarella californica (Kellogg) Rydb., Tiarella laciniata Hook. Saxifragaceae G5T5? S3*Townsendia hookeri Beaman Townsendia nuttallii Dorn Asteraceae G5 S1Trichophorum pumilum (Vahl) Schinz. & Thell. Baeothryon pumilum (Vahl) Á. Löve & D. Löve, Scirpus pumilus Vahl, S.alpinus Schleicher ex Gaudin, S. emergens (Norman) Fernald, S.pumilus ssp. rollandii (Fernald) Raymond, S. pumilus var. rollandii (Fernald) Beetle, S.rollandii Fernald, Trichophorum emergens Norman, T. pumilum var. rollandii (Fernald)HulténCyperaceae G5 S1*Trisetum sibiricum ssp. litoraleRupr. ex Roshev. Trisetum litorale (Rupr. ex Roshev.) A.P. Khokhr. Poaceae G5T4Q S3Trollius membranostylis Hultén Trollius riederianus Schipcz. Ranunculaceae G4G5 S1Veronica grandiflora Gaertn. none Plantaginaceae G3 S2S3*Vicia americana Muhl. ex Willd. Vicia americana var. americana Willd. Fabaceae G5 S2Viola selkirkii Pursh ex Goldie none Violaceae G5? S3S4*Viola sempervirens Greene Viola sarmentosa Dougl. ex Hook. Violaceae G5 S1*Zannichellia palustris L. ssp. palustris Zannichellia major (Hartm.) Boenn. ex Rchb., Z. palustris var. major (Hartm.) W. D. J.Koch, Z. palustris var. stenophylla Asch. & Graebn.Alaska Natural Heritage Program Rare Species Rankings:GLOBAL RANK (Global ranks are based on the world-wide status of a taxon and are assigned by The Nature Conservancy and an international network of Natural Heritage Programs andConservation Data Centers.).G1: Critically imperiled globally because of extreme rarity (5 or fewer occurrences, or very few remaining individuals), or because of some factor of its biology making it especially vulnerable toextinction. (Critically endangered throughout its range.).G2: Imperiled globally because of rarity (6 to 20 occurrences) or because of other factors. demonstrably making it very vulnerable to extinction throughout its range. (Endangered throughout itsrange.).G3: Either very rare and local throughout its range or found locally (even abundantly at some of its locations) in a restricted range (21 to 100 occurrences). (Threatened throughout its range.).G4: Widespread and apparently secure globally, though it may be quite rare in parts of its range, especially at the periphery.G5: Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.T#: Global rank of the described subspecies or variety.G#G#: Global rank of species uncertain, best described as a range between the two ranks.G#Q: Indicates some uncertainty about taxonomic status that might affect global rank.STATE RANK (State ranks are based on the status of the taxon within a particular state or province. The state ranks for taxa presented in this guide often differ from the ranks for the same taxa inother states or provinces.).S1: Critically imperiled in state because of extreme rarity (5 or fewer occurrences, or very few remaining individuals), or because of some factor of its biology making it especially vulnerable toextinction. (Critically endangered throughout in state.).S2: Imperiled in state because of rarity (6-20 occurrences), or because of other factors making it very vulnerable to extirpation from the state.S3: Rare or uncommon in the state (21-100 occurrences).SP: Occurring in nearby state or province; not yet reported in state, but probably will be encountered with further inventory.S#S#: State rank of species uncertain, best described as a range between the two ranksStateRankPotamogetonaceae G5 S3S4*Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page B‐15 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyAppendix C – Swan Lake Project Area PhotosSwan Lake Hydroelectric Project January 2013FERC Project No. 2911Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencySteep vegetated slopes in analysis areaSteep avalanche chute (a) and rock slop (b) in analysis areaSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐1 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencySteep slopes and cliff faces in analysis areaMoss muskeg area north of Track CreekSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐2 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyForested wetland along Lost CreekEmergent wetland along north shore near Lost CreekSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐3 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyEmergent wetland along southeastern shoreNorthern bugleweed along Lost CreekSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐4 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyPacific buttercup and northern bugleweed habitat along Lost Creek (a)Pacific buttercup and northern bugleweed habitat along Lost Creek (b)Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐5 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyBackwater channel along Lost CreekTrack CreekSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐6 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyMint CreekSwan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page A‐7 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyAppendix D – Botanical Survey TypesSwan Lake Hydroelectric Project January 2013FERC Project No. 2911Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable D‐1. Survey TypesSurvey TypeField CheckCursoryGeneralFocused (IntuitiveControlled)DescriptionThe survey area is given a quick “once over” but the surveyor does not walk completelythrough the project area. The entire area is not examined.A Cursory survey is appropriately used to confirm the presence of species of interestidentified in previous surveys or in the pre-field analysis. By its nature, the cursorysurvey is rapid, and does not provide in-depth environmental information. The entirearea is traversed at least once. For example, stand condition as seen in aerialphotography can be verified by a cursory survey. Also, a cursory survey can be used todetermine if a plant population that had been previously documented at a site remainspresent or intact.The survey area is given a closer review by walking through the area and its perimeteror by walking more than once through the area. Most of the area is examinedThe Focused, or Intuitive Controlled, survey is the most commonly used and mostefficient method of surveying for TES plants. During pre-field analysis, potential suitablehabitat is identified for each species of interest and the survey effort is focused in thoseareas. This method requires adequate knowledge of suitable habitat in order toaccurately select the areas of focused searching. When conducting intuitive controlledsurveys, an area somewhat larger than the identified suitable habitat should besearched to validate current suitable habitat definitions.RandomRandom surveys employ an undirected, typically non-linear, traverse through a projectarea. They are employed either when there is inadequate natural history informationabout a species to discern its suitable habitat and the surveyor is simply searching foroccurrences, or when a target species is very abundant within a search area and thesurveyor is attempting to make estimates of population parameters such as intra-patchvariations in density or the occurrence of predation or herbivory. However, a stratifiedrandom survey may be more effective in these latter cases.Stratified RandomThis survey is most often used within known population areas of target species, or whenan area to be surveyed is of unknown habitat suitability and is relatively large. Stratifiedrandom surveys employ a series of randomly selected plots of equal size within a projectarea that are each thoroughly searched for target species. When conducting a stratifiedrandom survey, it is important to sample an adequate number of plots that are ofsufficient size if statistical inference regarding the survey area is desired (discussion ofsample designs, see Elzinga, C., et al. 1998).SystematicTypically used in limited areas where the likelihood of occurrence of a target speciesmay be evenly distributed throughout the survey area. Systematic surveys are oftenemployed either within focused search areas (e.g., stratified random and intuitivecontrolled methods), or when a proposed project is likely to produce significant habitatalterations for species that are especially sensitive to the proposed activities.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page D‐1 Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyAppendix E – Rare Plant Element OccurrenceField FormsSwan Lake Hydroelectric Project January 2013FERC Project No. 2911Version: Agency Review

Enclosure 2R10 TES PLANT ELEMENT OCCURRENCE - FIELD FORM - USDA FOREST SERVICE 12/08® = required field, ®* = conditionally required field, ® = required field Alaska RegionGeneral Information1) SITE ID: ® 2) DATE: ® 8/7/2012 3) SITE NAME: SWAN LOST CREEK4) NRCS PLANT CODE: ® GAKA (POPULATION GAKA 1)5) SCIENTIFIC NAME: ® GALIUM KAMTSCHATICUM6) RECORD SOURCE: ® FS 7) SURVEY ID: ®* 8) Survey Name: Swan Lake Exp.9) EXAMINER(S)- LAST: ® BECK FIRST: ® Kathryn MIDDLE INITIAL: ALAST: BRIMACOMBE FIRST: KAREN MIDDLE INITIAL: A10) OWNERSHIP: ® USFS 11) Loc. Uncert: ® 12) Uncert. Dist: ®*13) E.O. # 14) STATE: ®* AK 15) COUNTY: ®*16) REGION: ®* 10 17) FOREST: ®* TONGASS 18) DISTRICT: ®* KETCHIKAN-MISTY FIORDS19) Area (Est): 20) Area UOM: ®*21) Canopy Cover Method ®* (circle one): COVER PERCENT; DAUBEN; NRMCOVElement Occurrence Data22) EO Canopy Cover: ®%Cov:

Enclosure 2SITE ID:Site ClassificationsRecord taxonomic units of the given type(s) if published classifications exist for the area.CLASSIFICATION TYPE CLASS CODE CLASSIFICATION SHORT NAME CLASSIFICATION SET50) Existing Veg®51) Potential Veg52) EcotypeHabitat Quality and Management Comments53) Habitat Description: Plants growing in moist, undulating, moss, duff, and soil on hummocks, under tallshrub layer, in riparian terrace.54) Dominant Process: 9055) Process Comment: Riparian process56) Community Quality (L, M, H): H 57) Landscape Integrity (L, M, H): H58) Disturbance/Threats (present or imminent): A small foot path has been brushed out in the vicinity ofsome of the plants in the population. Some of these plants might be flooded if the dam pool were raised.59) Disturbance/Threats Comment:60) Non-Native Comment: No nonnatives present in this habitat.61) Current Land Use Comment:Canopy CoverRecord % canopy cover by actual percent, or by cover class (as indicated in General Information Block).Lifeform Canopy Cover 62) % Cov or Code Ground Cover 63) % Cov or CodeTree 30 BareShrub 90 GravelForb 60 RockGraminoid Tr BedrockNon-vascular 45 Moss 50Lichen 5 Litter/Duff 50AlgaeBasal VegWaterRoad surfaceLichenAssociated SpeciesList species directly associated with the EO species on this site. Record the NRCS Plant Code, scientific nameor both. If desired, indicate lifeform, dominant species, % cover for each species and flag non-native species.TrSITE ID:09/18/2008 Page 2 of 5

Enclosure 264) Completeness of Species List: ®* C, R, OR S ®65) Species List Comment:66) ®NRCSPlant Code67) ®Scientific Name68)LifeForm69)Dom.(Y/N)70)% Cov orClass71)NonnativePicea sitchensis T YAlnus rubra T YRibes bracteosum S YRubus spectabilis S YOplopanax horridumVaccinium parviflorumSSGymnocarpium dryopteris F YDryopteris expansa F YAthyrium felix-femina F yThelypteris connectilisStreptopus amplexicaulisCoptis trifoliaTiarella trifoliataViola sp.Circaea alpinaLysichiton americanumTrisetum cernuumFFFFFFFgEO Specimen Documentation72) Reference for ID:73) Primary Collector – ®Last Name: BECK First Name: Kathryn M.I. A.Other Collectors – ®Last Name: First Name: M.I.74) Collection #: ®* 201211 75) ID Confirmed: ®* Y: or N: or Questionable:76) Verification: ®77) Specimen Repository: ®* WTUSITE ID:78) Image ID 79) Image DescriptionImage Information ® (IF IMAGES TAKEN)09/18/2008 Page 3 of 5

Enclosure 2Location Information(State, County, Region, Forest, District will be auto-populated by the database application when the spatial feature is entered)80) USGS Quad Number: 81) USGS Quad Name:82) Forest Quad Number: 83) Forest Quad Name:84) Legal Description: Required where public land survey is available.Meridian:Township and Range: T72S R92E S 12 SW1/4 and SE1/4 of NW1/4Section:__ 12 Q Sec:___ QQ Sec: ____ QQQ Sec: ____ QQQQ Sec: ____85) Latitude and Longitude ®FOR TONGASS (either in degrees, minutes, seconds or in decimal degrees)Geodetic Datum:Latitude: Degrees __ _ N Minutes Seconds __ __.__ __Longitude: Degrees __ __ __ W Minutes Seconds __ __.__ __GPS Datum:GPS Lat. Dec. Degrees: 55.640055.6400GPS Long. Dec. Degrees: 131.2470131.249386) UTM® FOR CHUGACHUTM Datum:Easting: 358569358426UTM Zone:Northing: 6168289616830787) GPS Equipment Used (Manufacturer and Model):88) Metes and Bounds09/18/2008 Page 4 of 5

Enclosure 2SITE ID:89) Directions to SiteBoat up far northeast arm of Swan Lake (22 miles northeast of Ketchikan) until it becomes Lost Creek. Plantsare scattered on both sides of creek under dense shrub thickets on riparian terrace.90) Sketch of Site or Area91) General EO CommentsThe entire riparian terrace was not searched. The shrub understory is very dense and difficult to getaround in. Est. 30 rhizomatous patches of plants were observed; there are probably more.Galium kamtschaticum GPS points:‐131.2470 55.6400‐131.2470 55.6399‐131.2467 55.6408‐131.2468 55.6406‐131.2481 55.6395‐131.2493 55.640009/18/2008 Page 5 of 5

Enclosure 2R10 TES PLANT ELEMENT OCCURRENCE - FIELD FORM - USDA FOREST SERVICE 12/08® = required field, ®* = conditionally required field, ® = required field Alaska RegionGeneral Information1) SITE ID: ® 2) DATE: ® 8/6/2012 3) SITE NAME: SWAN LAKE4) NRCS PLANT CODE: ® LYUN (POPULATION LYUN 1)5) SCIENTIFIC NAME: ® LYCOPUS UNIFLORUS6) RECORD SOURCE: ® FS 7) SURVEY ID: ®* 8) Survey Name: Swan Lake Exp.9) EXAMINER(S)- LAST: ® BECK FIRST: ® Kathryn MIDDLE INITIAL: ALAST: BRIMACOMBE FIRST: KAREN MIDDLE INITIAL: A10) OWNERSHIP: ® USFS 11) Loc. Uncert: ® 12) Uncert. Dist: ®*13) E.O. # 14) STATE: ®* AK 15) COUNTY: ®*16) REGION: ®* 10 17) FOREST: ®* TONGASS 18) DISTRICT: ®* KETCHIKAN-MISTY FIORDS19) Area (Est): 20) Area UOM: ®*21) Canopy Cover Method ®* (circle one): COVER PERCENT; DAUBEN; NRMCOVElement Occurrence Data22) EO Canopy Cover: ®%Cov:

Enclosure 2SITE ID:Site ClassificationsRecord taxonomic units of the given type(s) if published classifications exist for the area.CLASSIFICATION TYPE CLASS CODE CLASSIFICATION SHORT NAME CLASSIFICATION SET50) Existing Veg®51) Potential Veg52) EcotypeHabitat Quality and Management Comments53) Habitat Description: Plants growing in numerous rhizomatous patches around lake shore eithersubmerged by the high water levels, or in moist substrate up on the shore. It grows in moist soil,rock crevices, moist logs and moss. This species seems to thrive in the habitat created by the dam andfluctuating water levels. The survey was done when the reservoir was at full pool. From the fullpool level, it is unknown how far below the high water level this species can survive. We did notattempt to completely map this population.54) Dominant Process: 9055) Process Comment:56) Community Quality (L, M, H): H 57) Landscape Integrity (L, M, H): H58) Disturbance/Threats (present or imminent): If raised the dam pool were raised, this population wouldlikely survive via root fragments, submerged plants, and repopulate from adjacent subpopulations, eg. plantsalong the road.59) Disturbance/Threats Comment:60) Non-Native Comment: Few nonnatives present with this species.61) Current Land Use Comment: Hydroelectric production.Canopy CoverRecord % canopy cover by actual percent, or by cover class (as indicated in General Information Block).Lifeform Canopy Cover 62) % Cov or Code Ground Cover 63) % Cov or CodeTreeBareShrubGravelForbRockGraminoidBedrockNon-vascularMossLichenLitter/DuffAlgaeBasal VegWaterRoad surfaceLichen09/18/2008 Page 2 of 2

Enclosure 2SITE ID:Associated SpeciesList species directly associated with the EO species on this site. Record the NRCS Plant Code, scientific nameor both. If desired, indicate lifeform, dominant species, % cover for each species and flag non-native species.64) Completeness of Species List: ®* C, R, OR S ®65) Species List Comment:66) ®NRCSPlant Code67) ®Scientific Name68)LifeForm69)Dom.(Y/N)70)% Cov orClass71)NonnativeAlnus sinuataTRubus spectabilisSPicea sitchensisTRibes bracteosumSOplopanax horridumSTolmiea menziesiiFEquisetum arvenseFRanunculus uncinatusFPrenanthes alataFGalium triflorumFEpilobium spp.FAchillea borealisFAthyrium felix-feminaFEO Specimen Documentation72) Reference for ID:73) Primary Collector – ®Last Name: BECK First Name: Kathryn M.I. A.Other Collectors – ®Last Name: First Name: M.I.74) Collection #: ®* 201207, 201210 75) ID Confirmed: ®* Y: or N: or Questionable:76) Verification: ®77) Specimen Repository: ®*09/18/2008 Page 3 of 3

Enclosure 2SITE ID:Image Information ® (IF IMAGES TAKEN)78) Image ID 79) Image DescriptionLocation Information(State, County, Region, Forest, District will be auto-populated by the database application when the spatial feature is entered)80) USGS Quad Number: 81) USGS Quad Name:82) Forest Quad Number: 83) Forest Quad Name:84) Legal Description: Required where public land survey is available.Meridian: Township and Range: T72S R92E Sections 11, 12, 13, 14, 20, 27Section:__ Q Sec:___ QQ Sec: ____ QQQ Sec: ____ QQQQ Sec: ____85) Latitude and Longitude ®FOR TONGASS (either in degrees, minutes, seconds or in decimal degrees)Geodetic Datum:Latitude: Degrees __ _ N Minutes Seconds __ __.__ __Longitude: Degrees __ __ __ W Minutes Seconds __ __.__ __GPS Datum:GPS Lat. Dec. Degrees: 55.6137GPS Long. Dec. Degrees: 131.3329Additional points in Field 9186) UTM® FOR CHUGACHUTM Datum:UTM Zone:Easting: __ __ __ __ __ __ 6165556 Northing: __ __ __ __ __ __ 35306987) GPS Equipment Used (Manufacturer and Model):Trimble Geo HX88) Metes and Bounds09/18/2008 Page 4 of 4

Enclosure 2SITE ID:89) Directions to SiteFrom the west end of Swan Lake (22 miles northeast of Ketchikan) boat to shore areas that are gently sloping tomoderately steep. Plants are growing underwater (when the lake is at full pool level) and above water levelalong lake shore. Substrates include moss, soil, in rock crevices and on moist logs near lake shore.90) Sketch of Site or Area91) General EO CommentsThis species was commonly observed growing around the edge of the lake, both submerged in the waterand up on the shore; it is incompletely mapped.Swan Lake Lycopus uniflorus points:‐131.3329 55.6137‐131.2446 55.6421‐131.2439 55.6424‐131.2490 55.6378‐131.2621 55.6336‐131.2920 55.5950‐131.2461 55.6315‐131.2580 55.6350‐131.3413 55.6143‐131.2529 55.636409/18/2008 Page 5 of 5

Enclosure 2R10 TES PLANT ELEMENT OCCURRENCE - FIELD FORM - USDA FOREST SERVICE 12/08® = required field, ®* = conditionally required field, ® = required field Alaska RegionGeneral Information1) SITE ID: ® 2) DATE: ® 8/9/2012 3) SITE NAME: SWAN LAKE ROAD4) NRCS PLANT CODE: ® LYUN (POPULATION LYUN 2)5) SCIENTIFIC NAME: ® LYCOPUS UNIFLORUS6) RECORD SOURCE: ® FS 7) SURVEY ID: ®* 8) Survey Name: Swan Lake Exp.9) EXAMINER(S)- LAST: ® BECK FIRST: ® Kathryn MIDDLE INITIAL: ALAST: BRIMACOMBE FIRST: KAREN MIDDLE INITIAL: A10) OWNERSHIP: ® USFS 11) Loc. Uncert: ® 12) Uncert. Dist: ®*13) E.O. # 14) STATE: ®* AK 15) COUNTY: ®*16) REGION: ®* 10 17) FOREST: ®* TONGASS 18) DISTRICT: ®* KETCHIKAN-MISTY FIORDS19) Area (Est): 20) Area UOM: ®*21) Canopy Cover Method ®* (circle one): COVER PERCENT; DAUBEN; NRMCOVElement Occurrence Data22) EO Canopy Cover: ®%Cov:

Enclosure 2SITE ID:Site ClassificationsRecord taxonomic units of the given type(s) if published classifications exist for the area.CLASSIFICATION TYPE CLASS CODE CLASSIFICATION SHORT NAME CLASSIFICATION SET50) Existing Veg®51) Potential Veg52) EcotypeHabitat Quality and Management Comments53) Habitat Description: Plants growing in numerous rhizomatous patches along the road to thedam, in wet ditches, graveled areas and on the road surface. This species seems to thrive in disturbedhabitat created by the project. It is incompletely mapped.54) Dominant Process: 7055) Process Comment:56) Community Quality (L, M, H): L 57) Landscape Integrity (L, M, H): L58) Disturbance/Threats (present or imminent): EX, RM, OV59) Disturbance/Threats Comment: If construction occurred along the road and in gravel pits here, thispopulation would likely survive as it seems to do well with disturbance. It could also repopulate via rootfragments and/or from adjacent subpopulations.60) Non-Native Comment: Numerous non-native species are present with the Lycopus (Trifolium sp,Veronica spp., Plantago major, Leucanthemum vulgare, Taraxacum officinale). It does not seem to be outcompeted,however.61) Current Land Use Comment: Hydroelectric production.Canopy CoverRecord % canopy cover by actual percent, or by cover class (as indicated in General Information Block).Lifeform Canopy Cover 62) % Cov or Code Ground Cover 63) % Cov or CodeTreeBareShrubGravelForbRockGraminoidBedrockNon-vascularMossLichenLitter/DuffAlgaeBasal VegWaterRoad surfaceLichen SITE ID:Associated Species09/18/2008 Page 2 of 2

Enclosure 2List species directly associated with the EO species on this site. Record the NRCS Plant Code, scientific nameor both. If desired, indicate lifeform, dominant species, % cover for each species and flag non-native species.64) Completeness of Species List: ®* C, R, OR S ®65) Species List Comment:66) ®NRCSPlant Code67) ®Scientific Name68)LifeForm69)Dom.(Y/N)70)% Cov orClass71)NonnativeAlnus sinuataTRubus spectabilisSPicea sitchensisTRubus parviflorusSAruncus SylvesterSLeucanthmum vulgare F XEquisetum arvenseTiarella trifoliataFFVeronica spp. F XGalium triflorumEpiobium spp.Achillea borealisAthyrium felix-feminaJuncus spp.FFFFGTrifolium repens F XPlantago sp. F XEO Specimen Documentation72) Reference for ID:73) Primary Collector – ®Last Name: BECK First Name: Kathryn M.I. A.Other Collectors – ®Last Name: First Name: M.I.74) Collection #: ®* 201244 75) ID Confirmed: ®* Y: or N: or Questionable:76) Verification: ®77) Specimen Repository: ®* WTUSITE ID:09/18/2008 Page 3 of 3

Enclosure 2Image Information ® (IF IMAGES TAKEN)78) Image ID 79) Image DescriptionLocation Information(State, County, Region, Forest, District will be auto-populated by the database application when the spatial feature is entered)80) USGS Quad Number: 81) USGS Quad Name:82) Forest Quad Number: 83) Forest Quad Name:84) Legal Description: Required where public land survey is available.Meridian: Township and Range: T72S R92E S 20, 19Section:__ Q Sec:___ QQ Sec: ____ QQQ Sec: ____ QQQQ Sec: ____85) Latitude and Longitude ®FOR TONGASS (either in degrees, minutes, seconds or in decimal degrees)Geodetic Datum:Latitude: Degrees __ _ N Minutes Seconds __ __.__ __Longitude: Degrees __ __ __ W Minutes Seconds __ __.__ __GPS Datum:GPS Lat. Dec. Degrees: 55.6153Second point 55.6157GPS Long. Dec. Degrees: 131.3450131.343586) UTM® FOR CHUGACHUTM Datum:UTM Zone:Easting: __ __ __ __ __ __Northing: __ __ __ __ __ __3523136165756Second point 352408616579887) GPS Equipment Used (Manufacturer and Model):88) Metes and Bounds09/18/2008 Page 4 of 4

Enclosure 2SITE ID:89) Directions to SiteTravel the road from the shore of Carroll Inlet up to Swan Lake (area 22 miles northeast of Ketchikan). Look forscattered patches of plants growing on the roadside, in gravel pits and in wet ditches adjacent the road.90) Sketch of Site or Area91) General EO CommentsNo attempt was made to completely map this species along the road. It was also commonly observedgrowing around the edge of Swan Lake, both submerged in the water and up on the shore.09/18/2008 Page 5 of 5

Enclosure 2R10 TES PLANT ELEMENT OCCURRENCE - FIELD FORM - USDA FOREST SERVICE 12/08® = required field, ®* = conditionally required field, ® = required field Alaska RegionGeneral Information1) SITE ID: ® 2) DATE: ® 8/8/2012 3) SITE NAME: SWAN LAKE4) NRCS PLANT CODE: ® PLCH3 (POPULATION PLC H 1)5) SCIENTIFIC NAME: ® PLATANTHERA CHORISIANA6) RECORD SOURCE: ® FS 7) SURVEY ID: ®* 8) Survey Name: Swan Lake Exp.9) EXAMINER(S)- LAST: ® BECK FIRST: ® Kathryn MIDDLE INITIAL: ALAST: BRIMACOMBE FIRST: KAREN MIDDLE INITIAL: A10) OWNERSHIP: ® USFS 11) Loc. Uncert: ® 12) Uncert. Dist: ®*13) E.O. # 14) STATE: ®* AK 15) COUNTY: ®*16) REGION: ®* 10 17) FOREST: ®* TONGASS 18) DISTRICT: ®* KETCHIKAN-MISTY FIORDS19) Area (Est): 20) Area UOM: ®*21) Canopy Cover Method ®* (circle one): COVER PERCENT; DAUBEN; NRMCOVElement Occurrence Data22) EO Canopy Cover: ®%Cov:

Enclosure 2SITE ID:Site ClassificationsRecord taxonomic units of the given type(s) if published classifications exist for the area.CLASSIFICATION TYPE CLASS CODE CLASSIFICATION SHORT NAME CLASSIFICATION SET50) Existing Veg®51) Potential Veg52) EcotypeHabitat Quality and Management Comments53) Habitat Description: Plants growing in small, sloping muskeg adjacent lakeshore.54) Dominant Process: 9055) Process Comment:56) Community Quality (L, M, H): H 57) Landscape Integrity (L, M, H): H58) Disturbance/Threats (present or imminent): This small population would be inundated if dam pool wereraised.59) Disturbance/Threats Comment:60) Non-Native Comment: No nonnatives present in this habitat.61) Current Land Use Comment:Canopy CoverRecord % canopy cover by actual percent, or by cover class (as indicated in General Information Block).Lifeform Canopy Cover 62) % Cov or Code Ground Cover 63) % Cov or CodeTreeShrubForbGraminoidBareGravelRockBedrockNon-vascular Moss 80Lichen Litter/Duff 15AlgaeBasal VegWater 5Road surfaceLichenAssociated SpeciesSITE ID:List species directly associated with the EO species on this site. Record the NRCS Plant Code, scientific nameor both. If desired, indicate lifeform, dominant species, % cover for each species and flag non-native species.09/18/2008 Page 2 of 2

Enclosure 264) Completeness of Species List: ®* C, R, OR S ®65) Species List Comment:66) ®NRCSPlant Code67) ®Scientific Name68)LifeForm69)Dom.(Y/N)70)% Cov orClass71)NonnativeTsuga mertensiana T YChaemycyparis nootkatensis T YVaccinium vitis-idaea S YCornus canadensis S YLedum groenlandicumSanguisorba sitchensisSFOxyria digyna F YCarex sp. G YNephyrophyllidium crista-galli F ySphagnum spp.MEO Specimen Documentation72) Reference for ID:73) Primary Collector – ®Last Name: BECK First Name: Kathryn M.I. A.Other Collectors – ®Last Name: First Name: M.I.74) Collection #: ®* 75) ID Confirmed: ®* Y: or N: or Questionable:76) Verification: ®77) Specimen Repository: ®*SITE ID:78) Image ID 79) Image DescriptionImage Information ® (IF IMAGES TAKEN)09/18/2008 Page 3 of 3

Enclosure 2Location Information(State, County, Region, Forest, District will be auto-populated by the database application when the spatial feature is entered)80) USGS Quad Number: 81) USGS Quad Name:82) Forest Quad Number: 83) Forest Quad Name:84) Legal Description: Required where public land survey is available.Meridian:Township and Range: T72S R92E S 27 NE¼ of SW1/4Section:__ Q Sec:___ QQ Sec: ____ QQQ Sec: ____ QQQQ Sec: ____85) Latitude and Longitude ®FOR TONGASS (either in degrees, minutes, seconds or in decimal degrees)Geodetic Datum:Latitude: Degrees __ _ N Minutes Seconds __ __.__ __Longitude: Degrees __ __ __ W Minutes Seconds __ __.__ __GPS Datum:GPS Lat. Dec. Degrees: 55.5971 GPS Long. Dec. Degrees: 131.293086) UTM® FOR CHUGACHUTM Datum:Easting: __ __ __ __ __ __UTM Zone:Northing: __ __ __ __ __ __87) GPS Equipment Used (Manufacturer and Model):88) Metes and Bounds09/18/2008 Page 4 of 4

Enclosure 2SITE ID:89) Directions to SiteFrom the west end of the lake, boat to the southern arm of Swan Lake (22 miles northeast of Ketchikan. Theonly muskeg on the lakeshore is on the east side of this arm of the lake (north of Mint Creek). Plants are nearthe lake shore, near some trees in gently sloping muskeg.90) Sketch of Site or Area91) General EO CommentsThis small muskeg was fairly well searched (despite driving rain), though vegetative plants may havebeen missed.09/18/2008 Page 5 of 5

Enclosure 2R10 TES PLANT ELEMENT OCCURRENCE - FIELD FORM - USDA FOREST SERVICE 12/08® = required field, ®* = conditionally required field, ® = required field Alaska RegionGeneral Information1) SITE ID: ® 2) DATE: ® 8/7/2012 3) SITE NAME: LOST CREEK4) NRCS PLANT CODE: ® RAPA (POPULATION RAPA 1)5) SCIENTIFIC NAME: ® RANUNCULUS PACIFICUS6) RECORD SOURCE: ® FS 7) SURVEY ID: ®* 8) Survey Name: Swan Lake Exp.9) EXAMINER(S)- LAST: ® BECK FIRST: ® Kathryn MIDDLE INITIAL: ALAST: BRIMACOMBE FIRST: KAREN MIDDLE INITIAL: A10) OWNERSHIP: ® USFS 11) Loc. Uncert: ® 12) Uncert. Dist: ®*13) E.O. # 14) STATE: ®* AK 15) COUNTY: ®* KETCHIKAN16) REGION: ®* 10 17) FOREST: ®* TONGASS 18) DISTRICT: ®* KETCHIKAN-MISTY FIORDS19) Area (Est): 20) Area UOM: ®*21) Canopy Cover Method ®* (circle one): COVER PERCENT; DAUBEN; NRMCOVElement Occurrence Data22) EO Canopy Cover: ®%Cov:

Enclosure 2SITE ID:Site ClassificationsRecord taxonomic units of the given type(s) if published classifications exist for the area.CLASSIFICATION TYPE CLASS CODE CLASSIFICATION SHORT NAME CLASSIFICATION SET50) Existing Veg®51) Potential Veg52) EcotypeHabitat Quality and Management Comments53) Habitat Description: Plants growing in wet moss on top of large, 40 foot long downed log atedge of riparian area. Plants may also be growing in soil of stabilized gravel bar nearby.54) Dominant Process: 9055) Process Comment:56) Community Quality (L, M, H): H 57) Landscape Integrity (L, M, H): H58) Disturbance/Threats (present or imminent): If raised the dam pool were raised, most of this populationwould be submerged.59) Disturbance/Threats Comment:60) Non-Native Comment: Few nonnatives present with this species.61) Current Land Use Comment: Hydroelectric production.Canopy CoverRecord % canopy cover by actual percent, or by cover class (as indicated in General Information Block).Lifeform Canopy Cover 62) % Cov or Code Ground Cover 63) % Cov or CodeTree 40 BareShrub 30 GravelForb 75 RockGraminoid 25 BedrockNon-vascular Moss 80Lichen Litter/Duff 20AlgaeBasal VegWaterRoad surfaceLichenAssociated SpeciesSITE ID:List species directly associated with the EO species on this site. Record the NRCS Plant Code, scientific nameor both. If desired, indicate lifeform, dominant species, % cover for each species and flag non-native species.09/18/2008 Page 2 of 2

Enclosure 264) Completeness of Species List: ®* C, R, OR S ®65) Species List Comment:66) ®NRCSPlant Code67) ®Scientific Name68)LifeForm69)Dom.(Y/N)70)% Cov orClass71)NonnativeAlnus rubraTRubus spectabilisSSambucus racemosaSRibes bracteosumSLycopus uniflorusFFritillaria camschatcensisFRanunculus flammulaFRanunculus uncinatusFPrenanthes alataFGalium triflorumFPrunella vulgarisFMontia parvifoliaFCornus canadensisSFestuca subulataGAgrostis sp.GEO Specimen Documentation72) Reference for ID:73) Primary Collector – ®Last Name: Beck First Name: Kathryn M.I. A.Other Collectors – ®Last Name: First Name: M.I.74) Collection #: ®* 201209 75) ID Confirmed: ®* Y: or N: or Questionable:76) Verification: ®77) Specimen Repository: ®*SITE ID:78) Image ID 79) Image DescriptionImage Information ® (IF IMAGES TAKEN)09/18/2008 Page 3 of 3

Enclosure 2Location Information(State, County, Region, Forest, District will be auto-populated by the database application when the spatial feature is entered)80) USGS Quad Number: 81) USGS Quad Name:82) Forest Quad Number: 83) Forest Quad Name:84) Legal Description: Required where public land survey is available.Meridian: Township and Range: T72S R92E S 12Section:__ Q Sec:___SW QQ Sec: ____ QQQ Sec: ____ QQQQ Sec: ____85) Latitude and Longitude ®FOR TONGASS (either in degrees, minutes, seconds or in decimal degrees)Geodetic Datum:Latitude: Degrees __ _ N Minutes Seconds __ __.__ __Longitude: Degrees __ __ __ W Minutes Seconds __ __.__ __GPS Datum:GPS Lat. Dec. Degrees: 55.6421 GPS Long. Dec. Degrees: 131.244686) UTM® FOR CHUGACHUTM Datum:UTM Zone:Easting: __ __ __ __ __ __ 358732 Northing: __ __ __ __ __ __ 616853087) GPS Equipment Used (Manufacturer and Model):88) Metes and Bounds09/18/2008 Page 4 of 4

Enclosure 2SITE ID:89) Directions to SiteBoat up far northeast arm of Swan Lake (22 miles northeast of Ketchikan) until it becomes Lost Creek. Go upLost Creek to an area with a large gravel bar. Look for 40 foot long mossy log on southeast side of creek. Plantson top of log and possibly in soil of stabilized gravel bar. Use map and GPS points to help locate plants.90) Sketch of Site or Area91) General EO CommentsThis species was growing on a large, 40 foot long mossy log at the edge of a riparian area. It may alsobe growing in soil in the riparian area.09/18/2008 Page 5 of 5

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyAppendix F – Location Description of Rare PlantPopulations Observed in the Analysis AreaSwan Lake Hydroelectric Project January 2013FERC Project No. 2911Version: Agency Review

Botany and Wetlands Study ReportSoutheast Alaska Power AgencyTable F‐1. Locations of Rare Plant Populations Observed in the Analysis AreaRare speciesNorthern bugleweed(Lycopus uniflorus)Northern bugleweed(Lycopus uniflorus)Pacific buttercup(Ranunculuspacificus)Population# Analysis AreaLocation in the1 In numerous locationsaround Swan Lake2 In the vicinity of theDam and alongProject roads1 Gravel bar within LostCreekEstimated Habitat and relationship toPopulation Sizeinundation zoneseveral 100 Population would be affected byinundation from rising pool reservoirlevels.20-40 Disturbed wet areas, wet ditched,gravel roads. May be affected byconstruction, not within inundationzone.10 Plants growing in wet moss on top ofa large, downed log at the edge ofriparian area along Lost Creek.Population would be affected byinundation from rising pool reservoirlevels.Swan Lake Hydroelectric Project January 2013FERC Project No. 2911 Page F‐1 Version: Agency Review

Botany and Wetlands Study Report - McMillen, LLC

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