Integrated Training Area Management EA and Final FNSI

Project NameJarvis EastTraining AreaTraining AreaRotation PlanProject DescriptionThe Jarvis East Training Area, located within the Donnelly Training Area, Alaska, is used by troops tomaintain military readiness and preparedness. Impacts from the use of the area are typical of militarytraining exercises and include trail proliferation, vegetation damage, exposure of soil, road and traildegradation and impaired access. These impacts, if left untreated, can decline and result in erosion andimpaired drainage/hydrology. This project will mitigate training impacts by improving the health ofexisting vegetation through mowing, hydro-axing and fertilizing; the establishment of new vegetation inexposed area by hydro-seeding; the closing of unnecessary trails; the improvement of drainage throughgrading and the installation of water bars and culverts; and the reshaping and restoration of areasdamaged by vehicles and equipment.ApproximateAcresImpacted27Jarvis WestTraining AreaTraining AreaRotation PlanDonnellyTraining AreaTraining AreaRotation PlanOP RoadDrainageUpgrades33 Mile LoopRoad Phase 8A33 Mile LoopRoad Phase 8B33 Mile LoopRoad Phase 1RepairThe Jarvis West Training Area, located within the Donnelly Training Area, Alaska, is used by troops tomaintain military readiness and preparedness. Impacts from the use of the area are typical of militarytraining exercises and include trail proliferation, vegetation damage, exposure of soil, road and traildegradation and impaired access. These impacts, if left untreated, can decline and result in erosion andimpaired drainage/hydrology. This project will mitigate training impacts by improving the health ofexisting vegetation through mowing, hydro-axing and fertilizing; the establishment of new vegetation inexposed area by hydro-seeding; the closing of unnecessary trails; the improvement of drainage throughgrading and the installation of water bars and culverts; and the reshaping and restoration of areasdamaged by vehicles and equipment.The Donnelly Training Area, located within the Donnelly Training Area, Alaska, is used by troops tomaintain military readiness and preparedness. Impacts from the use of the area are typical of militarytraining exercises and include trail proliferation, vegetation damage, exposure of soil, road and traildegradation and impaired access. These impacts, if left untreated, can decline and result in erosion andimpaired drainage/hydrology. This project will mitigate training impacts by improving the health ofexisting vegetation through mowing, hydro-axing and fertilizing; the establishment of new vegetation inexposed area by hydro-seeding; the closing of unnecessary trails; the improvement of drainage throughgrading and the installation of water bars and culverts; and the reshaping and restoration of areasdamaged by vehicles and equipment.This project will improve a 7000 m section of an existing road. OP Road is a major route for troopactivities occurring along the western edge of the Donnelly East Training Areas. This section of road ischaracterized by steep hilly terrain, adverse slope concentrated rill erosion and soft wet areas in poorlydrained road saddles. This project will improve access and control erosion by improving drainage throughgrading, re-establishing ditches, road crown, out/in slopes and the installation of water bars.This project will improve a 2250 m section of an unimproved existing road base on the southern end of 33Mile Loop Road. This road is the main route for troop activities within 6 major training areas. Thissection of road is essentially inaccessible to military vehicles due large erosion features from poordrainage and deep ruts. This project will extend the length of improvements from 33 Mile Loop RoadPhase 7B and will improve access and control erosion by improving drainage through grading, reestablishingditches, cutouts and the installation of geotextile and fill material. This project will alsominimize impacts to sensitive cultural sites by controlling off road access through the installation of rockbarriers.This project will improve a 2000 m section of an unimproved existing road base on the southern end of 33Mile Loop Road. This road is the main route for troop activities within 6 major training areas. Thissection of road is essentially inaccessible to military vehicles due large erosion features from poordrainage and deep ruts. This project will extend the length of improvements from 33 Mile Loop RoadPhase 8A to the Jarvis Creek low water crossing and will improve access and control erosion byimproving drainage through grading, re-establishing ditches and the installation of geotextile and fillmaterial.This project will improve a 1750 m section of previously improved road on the northern end of 33 MileLoop Road adjacent to Eddy Drop Zone. This road is the main route for troop activities within 6 majortraining areas. This section of road was impaired from a significant flood overflow event from JarvisCreek that washed away the majority of road base material exposing geotextile. In addition, ditches, lowwater crossings and culverts were compromised. This project will re-establish the road and drainagefeatures through grading, ditching and the installation of geotextile, fill material, culverts and mortaredlow water crossings.272717.32.324.4_____________________________________________________________________________________________Environmental AssessmentUnited States Army Alaska, Integrated Training Area Management ProgramManagement Plan A-9