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HomeMy WebLinkAbout20080928 Ver 1_More Info Received_20080902UNITED STATES MARINE CORPS MARINE CORPS BASE PSC Box 20004 CAMP LEJEUNE, NC 28542-0004 IN REPLY REFER TO: 000 5090.11.2 BEMD ,M 18 2 From: Commanding Officer, Marine Corps Base, Camp Lejeune To: Commanding Officer, United States Army Corps of Engineers, Wilmington District 69 Darlington Avenue, Wilmington, NC 28403 Subj: APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT FOR PHASE ONE MODERNIZATION OF K-2 RANGES (P-1135) OF MARINE CORPS BASE (MCB), CAMP LEJEUNE, NORTH CAROLINA Encl: (1) Application for Department of the Army Permit for Phase One Modernization of K-2 Ranges in Verona Loop 1. This letter is in response to your Memorandum dated 26 June 2008 requesting a consolidated project map clearly displaying temporary and permanent impacts to jurisdictional areas for the proposed Phase One Modernization of K-2 Ranges (P-1135) in the Verona Loop Training Area on Marine Corps Base Camp Lejeune, North Carolina. 2. The enclosure includes an updated application and figures with jurisdictional impacts for each range (Figures 7-11). Camp Lejeune proposes to mechanically clear, cut, and fill 14.47 acres of Section 404 wetlands, and 496 linear feet of intermittent stream to complete the project. 3. The point of contact for this project is Mr. Martin Korenek, Environmental Conservation Branch, Environment and Installations Department, at telephone (910) 451-5063 or email martin.korenek@usmc.mil. Sincerely, el ?' 1 44? OHN R. TOWNSON Director, Environmental Management By direction of the Commanding Officer Copy to: NCDENR, DWQ, 401 Section, 7 copies NCDENR, DCM SAP ? ,r',: PN? PNOStO 08- OBIS APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT Privacy Act Statement Authority: 33 USC 401, Section 10: 1413, Section 404. Principal Purpose: These laws require permits authorizing activities in, or affecting, navigable waters of the United States, the discharge of dredged or fill material into waters of the United States, and the transportation of dredged material for the purpose of dumping it into ocean waters. Routing Uses: Information provided on this form will be used in evaluating this application for a permit. Disclosure; Disclosure of requested information is voluntary. If information is not provided however, the permit application cannot be processed nor can a permit be issued. One set of original drawings or good reproducible copies which show the location and character of the proposed activity must be attached to this application (see sample drawings and instructions) and be submitted to the District Engineer having jurisdiction over the location of the proposed activity. An application that is not completed in full will be returned (ITEMS 1 THRU 4 TO BE FILLED BY THE CORPS) 1. APPLICATION NO. 12. FIELD OFFICE CODE 13. DATE RECEIVED 14. DATE APPL. COMPLETE (ITEMS BELOW TO BE FILLED BY APPLICANT) 5. APPLICANT'S NAME 8. AUTHORIZED AGENTS NAME AND TITLE (an agent is not Marine Corps Base Camp Lejeune required) N/A c/o Mr. Carl Baker 6. APPLICANT'S ADDRESS 9. AGENT'S ADDRESS Marine Corps Base Camp Lejeune Deputy Public Works Officer N/A Public Works Division 1005 Michael Road Camp Lejeune, NC 28542 7. APPLICANT'S PHONE NOS. W/AREA CODE 10. AGENT'S PHONE NO. W/AREA CODE a. Business (910) 451-2213 N/A b. Fax 11. STATEMENT OF AUTHORIZATION I herebyuthorize Land I-Aarilgement Group, Inc. to actin my behalf as my agent in the processing of this application and to furnish, upon request, supple ntal infprmati . suppo of this permit application. i DATE E / CA -JS IG NAME, LOCATION AND DESCRIPTION OF PROJECT OR ACTIVITY 12. PROJECT NAME OR TITLE - Modernization of K-2 Ranges; Phase One 13. NAME OF WATERBODY, IF KNOWN (if applicable) 14. PROJECT STREET ADDRESS (if applicable) Tributaries of New River MCB Camp Lejeune 15. LOCATION OF PROJECT Jacksonville, NC Onslow North Carolina COUNTY STATE 16. OTHER LOCATION DESCRIPTIONS, IF KNOWN 17. DIRECTIONS TO THE SITE From Wilmington, take Hwy 17 N into Onslow County. Turn right at gate into Camp Lejeune. ?c Site is located off of Rhodes Point Road (see vicinity map). ?t?,N 18.)NATURF- OF ACTIVITY (Description of project, include all features) - The preferred project consists of the construction of four ranges: 50 Lane BZO Range (P-1), M16 Static Range (P-2), M249 SAW Range (P-3), and M203 Training Practice Range (P-4). In addition, support facilities for these ranges will be constructed. 14.47 acres of 404 wetlands and 496 linear feet of intermittent stream will be permanently impacted. In addition, 37.59 acres of 404 wetlands will be temporarily impacted during an inspection for UXO (See Project Narrative). 19. PROJECT PURPOSE (Describe the reason or purpose of the project) - To transform these ranges into state-of-the-art, interactive training facilities that could be used to readily meet Infantry Training and Readiness Manual requirements (See Project Narrative). USE BLOCKS 20-22 IF DREDGED AND/OR FILL MATERIAL IS TO BE DISCHARGED 20. REASON(S) FOR DISCHARGE To realign ranges and construct roads on which to access ranges and support facilities. 21. TYPE(S) OF MATERIAL BEING DISCHARGED AND THE AMOUNT OF EACH TYPE IN CUBIC YARDS - Clean, compacted sub-grade soil materials, clean ABC aggregate, pavement etc all above street reinforced concrete culverts at map specified locations. See map for area in each location. 22. SURFACE AREA IN ACRES OF WETLANDS OR OTHER WATERS FILLED 14.47 acres of 404 wetlands and 496 linear feet of intermittent stream will be permanently impacted. In addition, 37.59 acres of 404 wetlands will be temporarily impacted during an inspection for UXO (See Project Narrative). 23. IS ANY PORTION OF THE WORK ALREADY COMPLETE? no IF YES, DESCRIBE THE COMPLETED WORK Ranges currently exist within site. Proposed project will modernize and realign ranges. 24. ADDRESSES OF ADJOINING PROPERTY OWNERS, LESSEES, Etc., WHOSE PROPERTY ADJOINS THE WATERBODY N/A Property is confined entirely within Camp Lejeune 25. LIST OTHER CERTIFICATIONS OR APPROVALS/DENIALS RECEIVED FROM OTHER FEDERAL, STATE, OR LOCAL AGENCIES FOR WORK DESCRIBED IN THIS APPLICATION N/A AGENCY TYPE APPROVAL* IDENTIFICATION NUMBER DATE APPLIED DATE APPROVED DATE DENIED 26. Application is hereby made for a permit or permits to authorize the work described in this application. I certify that the information in this application is complete and accurate. I further certify that I possess the authority to undertake the work described herein or am acting as the duly authorized agent of the applicant. I SIGNATURE OF APPLICANT DATE 18. U.S.C. Section 1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of the United States knowingly and willfully falsifies, conceals, or covers up any trick, scheme, or disguises a material fact or makes any false, fictitious or fraudulent statements or representations o r makes or uses any false writing or document knowing same to contain any false, fictitious or fraudulent statements or entry, shall be fined not more than $10,000 or imprisoned not more than five years or both. PROJECT NARRATIVE Phase One Modernization of K-2 Ranges United States Marine Corps Camp Lejeune Onslow County, NC July 2008 INTRODUCTION The United States Marine Corps (USMC) proposes to modernize the K-2 ranges at Marine Corps Base Camp Lejeune (MCBCL), North Carolina. The 23 existing ranges are inadequate and outdated. The objective is to transform these ranges into state-of-the-art, interactive training facilities that could be used to readily meet Infantry Training and Readiness Manual (Marine Corps Order 3501.34) requirements. Modernization of the K-2 Ranges would be accomplished in two phases. This Individual Permit application applies only to Phase One of this project. Phase One involves the construction of four ranges: 50 Lane BZO Range (P-1), M16 Static Range (P-2), M249 SAW Range (P-3), and M203 Training Practice Range (P-4). In addition, support facilities for these ranges will be constructed. Total proposed permanent impacts for Phase One are 14.47 acres of 404 wetlands and 496 linear feet of intermittent stream. In addition, 37.59 acres of 404 wetlands will be temporarily impacted during an inspection for unexploded ordnance (UXO). The entire project area is located within the White Oak River Basin and is 470 acres in size. Please note that much of the information from this Project Narrative comes from the Environmental Assessment prepared for this project in March of 2005. This EA received a Finding of No Significant Impact. PURPOSE AND NEED Modernization of the K-2 ranges is needed because the existing design of the ranges no longer meets the demand for modern warfare, using present-day warfare methods. Current technology is available for use on modernized ranges that would optimize training, reduce cost, and save time, and would also minimize logistical support and provide very high accuracy ratings during qualifications training. The proposed modernization is required for several reasons: to meet training requirements, to provide automated target systems, to upgrade the road network, and to realign the surface danger zones (SDZs) in order to minimize their footprint over areas of the New River. Currently, while certain ranges are in 1 use, other nearby ranges cannot be scheduled due to safety concerns of overlapping SDZs. The realignment of the ranges and SDZs would resolve these scheduling conflicts and allow simultaneous use of all ranges. These changes would allow a high throughput of personnel through the range complex, thus less ranges would be needed. By modernizing the K-2 ranges to fulfill these requirements, the USMC would provide the highest possible return on their training investment. EXISTING CONDITIONS The 470-acre project area is located in Onslow County, approximately four miles east of Highway 17 along Rhodes Point Road (Figure 1). Habitat Topography at the K-2 Ranges is characterized by upland terraces, with the highest elevation at about 22 m (75 ft) (Figure 2). The terraces are dissected by drainage slopes with the lowest elevation at about 3 m (10 ft). The terraces are primarily composed of Baymeade and Onslow soil series while the slopes are composed of Marvyn loamy fine sand grading to Muckalee loam along the tributaries of the New River. The Bohicket series occurs along a tributary to Mill Creek. Smaller inclusions of Leon, Pantego, Alpin, and Norfolk soils are also respresented in the project area (Figure 3). The landscape surrounding the K-2 ranges is characterized by pine savannas that are dissected by drainage slopes. The hydrology of the savannas varies from dry-mesic to wet-mesic, which influences vegetation composition. The savannas are dominated by loblolly pine (Pinus taeda) with several species of hardwoods including sweetgum (Liquidambar styraciflua), southern red oak (Quercus falcata), white oak (Q. alba), and red maple (Acer rubrum). The shrub layer varies with wetness, but generally consists of wax myrtle (Myrica cerifera), blue huckleberry (Gaylussacia frondosa), and sparkleberry (Vaccinium arboreum). Groundcover species vary with the degree of land disturbance and fire regimes but can include wiregrass (Aristida stricta), bracken fern (Pteridium aquininum), and bluestem (Schizachyrium spp.), along with more disturbance tolerant species like green briar (Smilax spp.) and broomsedge (Andropogon virginicus). The drainage slopes are also dominated by loblolly pine with occurrences of mockernut hickory (Carya tomentosa), white oak, beech (Fagus grandifolia), American holly (Ilex opaca), and tulip poplar (Liriodendron tulipifera). 2 The most heavily used portions of the existing ranges are typically devoid of native groundcover, may consist of turf-type grasses, or are graveled. Depending on the intensity of current use, the K-2 impact area may support a variety of grasses and forbs or could be dominated by lichens and mosses on bare soil. Only scattered and often stunted loblolly pines or hardwoods persist down range from existing firing lines. The exact species composition of the ranges cannot be field-verified because of the potential for UXO, but aerial photographs of the region confirm the historic disturbance of the area (Figure 4). While the Base's Forest Management Program staff conducts timber marketing at MCB Camp Lejeune, the forest stands within the surface danger zones are not actively harvested or regenerated, but are subject to fire fuels management. Merchantable timber is currently harvested along the perimeter of the impact area. The Base contributes 40 percent of the net proceeds from the sale of timber products to the Onslow County Schools System in accordance with 10 US Code 2665. In accordance with an agreement between MCBCL and U.S. Army Corps of Engineers Wilmington District (USACE) for the K-2 Ranges project, the approximate limits of wetlands and other waters of the U.S. were determined by Geo-Marine Inc. (GMI) within the project area without field survey due to the risk of unexploded ordnance (UXO). In lieu of the typical field survey methods, a variety of remote sensing and mapping data were used in a geographical information system (GIS) to support the determination of wetlands and other waters of the U.S. As a result of comments generated during a pre-application meeting with representatives from the USACE and the NC Division of Water Quality (DWQ), GMI provided an updated Wetland Delineation and Stream Mapping Report to Wilmington District USACE in March of 2008. Wilmington District USACE issued a Jurisdictional Determination letter dated 3/31/08 approving the mapping of wetlands and other waters of the U.S. Utilizing the methods outlined in the report, 205.7 wetland acres (43.5 percent of total project area) were identified in the K2 Ranges project area (Figure 5). Palustrine emergent wetlands were the most prevalent comprising 165 acres, or 78 percent of the wetlands that were identified. Thirty-nine acres of palustrine forested wetlands and 0.2 acre of palustrine scrub-shrub wetlands were also identified. Finally, there were 8,401 linear feet of intermittent stream segments and 3,441 linear feet of perennial stream segments identified within the project area. 3 Water Resources The presence of submerged aquatic vegetation (SAV) in the New River is limited with no records of SAV north of the NC 172 bridge. South of the NC 172 bridge there are records of eelgrass (Zostera spp.) within Traps Bay, but SAV is absent in Courthouse Bay and Mile Hammock Bay (Rohde, July 2003). While roughly one-half of the K-2 impact area is bordered by the New River, the surface hydrology of the area is also influenced by four tributaries to the New River (Figure 2). An unnamed tributary of Mill Creek is located in the western portion of the impact area. Whitehurst Creek flows through the center of the site. Town Creek, situated to the north of Rhodes Point Road, runs eastward along the northern project boundary. A fourth tributary, locally referred to as Little Creek, drains the southeastern portion of the impact area with its outflow located near Hickory Point. The New River and its watershed are located entirely within Onslow County. The upper reaches of the New River and its tributary streams are narrow with flowing freshwater. The lower reaches are estuarine waters, which are wider, slow moving, poorly circulating, and affected by tides. Within the tidal portions of the New River, water quality classifications range from SA to SC. Within the New River estuary, all waters downstream from Grey Point to the New River Inlet at the Atlantic Ocean are classified as SA, with the exception of two areas of SC waters around the historic outfalls for the rifle range and the old Courthouse Bay wastewater treatment plants. An SC water classification is given to all tidal salt waters protected for secondary recreation such as fishing, boating, and other activities involving minimal skin contact; fish and noncommercial shellfish consumption; aquatic life propagation and survival; and wildlife. An SA water classification is given to tidal salt waters that are used for commercial shellfishing or marketing purposes and are also protected for all Class SC and Class SB uses. All SA waters are also High Quality Waters (HQW) by supplemental classification. All waters draining to the New River north of Grey Point are considered Nutrient Sensitive Waters (NSW). The NSW classification is a supplemental designation intended for waters needing additional nutrient management due to their being subject to excessive growth of 4 microscopic or macroscopic vegetation. In general, management strategies for point and nonpoint source pollution control require control of nutrients (nitrogen and/or phosphorus usually) such that excessive growth of vegetation is reduced or prevented and there is no increase in nutrients over target levels. Management strategies are site-specific. No specific restrictions on development are involved. The New River and several of its tributaries within the project area (Mill Creek, Town Creek, and Whitehurst Creek) have the additional designation of High Quality Waters (HQW) and Primary Nursery Areas (PNA). The High Quality Waters classification is a supplemental designation intended to protect waters which are rated excellent based on biological and physical/chemical characteristics through Division monitoring or special studies, primary nursery areas designated by the Marine Fisheries Commission, and other functional nursery areas designated by the Marine Fisheries Commission. Primary Nursery Areas, as defined by the Marine Fisheries Commission, are those areas in the estuarine system where initial post- larval development takes place. These areas are usually located in the uppermost sections of a system where populations are uniformly very early juveniles. The Division of Marine Fisheries is responsible for preserving, protecting and developing Primary Nursery Areas for commercially important finfish and shellfish. Federally Protected Species Federally listed. threatened and endangered species found at MCB Camp Lejeune are presented in Table 1. The Base has an endangered species program that focuses on conservation and protection of species and their management. No federally-listed species are known to occur in the K-2 Ranges project area. Table 1. Federally-listed species classified as endangered or threatened and known to occur in MCB Caron Leieune_ NC Common Name Scientific Name Status Animals American alligator Alligator mississip iensis T(S/A) Loggerhead sea turtle Caretta caretta T Green sea turtle Chelonia mydas T Piping lover Charadrius melodus T Bald eagle Haliaetus leucocephalus BPGA Red-cockaded wood ecker Picoides borealis E 5 KEY: Status Definition Endangered A taxon "in danger of extinction throughout all or a significant portion of its range." Threatened A taxon "likely to become endangered within the foreseeable future throughout all or a significant portion of its range." T(S/A) Threatened due to similarity of appearance - a species that is threatened due to similarity of appearance with other rare species and is listed for its protection. FSC Federal Species of Concern BPGA Species protected by the Bald and Golden Eagle Protection Act and Migratory Bird Treaty Act. The population of American alligators at MCB Camp Lejeune has been monitored since 1980 and appears to be stable or slightly increasing (USMC, November 2001). American alligators likely inhabit Mill Creek, Whitehurst Creek, and their tributaries. Both loggerhead and green sea turtles nest at Onslow Beach. Monitoring for sea turtle nests began in 1979 and is ongoing to allow for the immediate protection of the nests. Piping plover nests have not been detected at Onslow Beach, but suitable habitat is available for nesting and overwinter foraging. Piping plovers have been seen on Onslow Beach during all seasons of the year. As such, surveys for the piping plover are conducted for evidence of nesting behavior (USMC, November 2001). Onslow Beach is over 6.8 miles from the K-2 ranges. A bald eagle nest was first documented on Base in 2000 along the New River where it meets Sneads Creek. Protective buffers have been established around the nest site with restrictions on both ground and air-use activities (USMC, November 2001). This nest is over three miles from the K-2 ranges. Although bald eagles have been sighted by boaters on the New River, no nests have been documented on the western shore of the river. There are 88 active red-cockaded woodpecker (RCW) clusters at MCB Camp Lejeune. A Mission Compatible Red-Cockaded Woodpecker Management Plan (MCB Camp Lejeune, May 1999) was developed to manage and direct continuing RCW growth on the Base. A goal was 6 set in the RCW management plan to have 173 active clusters within seven management areas. As such, the Base manages occupied suitable habitat, unoccupied suitable habitat, and unoccupied potential habitat to reach this recovery goal of 173 active clusters. An active RCW cluster is located over 0.5 mile from the project area. The foraging area for this group does not extend into the project area, where foraging resources are generally inadequate. Seabeach amaranth is present on Onslow Beach often growing between dunes and the high tide line. Monitoring of amaranth is ongoing to prevent vehicles or pedestrians from harming this plant. Onslow Beach is over 6.8 miles from the K-2 ranges. Roughleaf loosestrife is present in specific habitat types on approximately 22 acres at MCB Camp Lejeune. Roughleaf loosestrife is not known to occur within the project area, though two small occurrences of potentially high probability habitat for the plant have been identified. Actual surveys for the plant in these high probability areas cannot be safely conducted due to UXO. MCB Camp Lejeune contacted the USFWS who concurred that the proposed project is not likely to adversely affect roughleaf loosestrife populations. The closest known sites are over 2.5 miles from the K-2 ranges in the developed portion of the Base or in the Greater Sandy Run Area. Historic or Archaeological Resources No historic structures are present within or adjacent to the K-2 ranges. Surveys for archaeological resources (pedestrian and subsurface) have not been conducted within the K-2 impact area due to the hazards posed by UXO. However, investigations have been conducted on the boundary of the SDZs at the K-2 ranges, where two archaeological sites have been identified. One site was recorded and recommended not eligible for inclusion in the National Register of Historic Places (NRHP) because of extensive previous disturbance. Another site was investigated during a shoreline survey, conducted by boat, and was recommended for further NRHP evaluation. However, no ground disturbing activities are planned in the vicinity of this site (Brewer, August 2004). ALTERNATIVES ANALYSIS The project requirements (criteria) that must be met for an alternative to be a reasonable option for fulfilling the purpose and need for the proposed action are as follows: 7 l 0 1. The alternative must allow the USMC to fulfill these specific training requirements: infantry training and readiness manual requirements, individual training standards, mission performance standards, and mission essential task listing. 2. The realignment of the surface danger zones (SDZs) must allow simultaneous use of all ranges. 3. The alternative must allow for the continued use of the ranges while modernization efforts are underway. 4. The footprint of SDZs over the New River must be minimized. The alternatives evaluated include a no-action alternative, one off-site alternative, one on-site alternative, and the preferred project. No-Action Alternative Under the no-action alternative, the existing K-2 ranges would remain the same, without modernization. Training at these ranges would continue to be conducted in accordance with Range and Training Regulations, Standard Operating Procedure for Range Control. However, this training would be conducted under conditions that have become inadequate over the years. Taking no action to modernize the K-2 ranges means that the USMC would be unable to accommodate new technology on these ranges, such as automated targets. This would further impact the ability of the forces to "train as they fight." Infantry training and readiness manual requirements, individual training standards, mission performance standards, and mission essential task listing would not be met efficiently or to the fullest extent possible. Additionally, readiness training and the availability of adequate resources to other US military branches and to allies would continue to be limited. Without range realignment, the surface danger zones associated with the existing K-2 ranges would continue to extend as far into the New River as they currently do. Safety for commercial and recreational boaters on the river would not be improved. Furthermore, access to existing targetry would continue to be difficult as the road network is in dire need of maintenance to make the roads passable. Road maintenance is currently hindered by the presence of unexploded ordnance (UXO) near the roads. 8 There are a large number of weapons that can be used at each of the existing K-2 ranges. Y ` However, when some ranges are being used, other ranges are restricted from use because of safety conflicts. Without consolidation into a lesser number of ranges, where each range is dedicated to a particular weapon system, scheduling will not allow a higher throughput of personnel at the range complex. The No Action Alternative does not provide for the consolidation and modernization of the existing K-2 ranges and cannot meet evaluation factors 1, 2, or 4. As such, it is not considered a reasonable solution for satisfying the purpose and need for the proposed action. Alternate Site An important objective to modernizing the K-2 ranges is to realign the surface danger zones and reduce the distance that they extend into the New River. One way to minimize the footprint of surface danger zones over the river would be to move the existing range firing lines (line from which ammunition is fired) north of Rhodes Point Road. This alternative would require shifting Rhodes Point Road and an existing tank trail farther to the north. While this alternative would meet evaluation factors 1, 2, and 4, it was dismissed because a northern shift to Rhodes Point Road and the tank trail would cause considerable impacts to approximately 900 acres of natural resources (e.g. wetlands, forested habitat, and protected species habitat). On-site Alternative #1 The original project design that was prepared for Phase One of the K-2 Ranges project was very similar to the preferred site design. However, the Range P4 - M203 Grenade Launcher had a larger footprint that impacted the easternmost stream (Figure 6). Total proposed impacts for this alternative were 14.47 acres of 404 wetlands and 912.5 linear feet of intermittent stream. On-Site Alternative #2: Preferred Proiect During a pre-application meeting with representatives of the USACE and DWQ to discuss the project, the above-referenced alternative (#1) was presented as the preferred site plan. Both the USACE and DWQ requested that Range P4 be modified to reduce proposed stream impacts. The USACE in Huntsville made the following changes to Range P4 in order to reduce impacts: 9 Extended firing berm and firing lanes to the west in order to minimize impact of stream to range firing lanes. • Modified firing berm lighting to accommodate increase in length to firing berm. • Moved Control Tower to be centered on firing berm. • Moved Ammo Breakdown building in order to maintain 15m separation from any range support facility (closest facility = Control Tower). • Graded range operation and control area to accommodate buildings moved and increase in length to firing berm. • Removed downrange grading that was done to re-route ditch and bring area above the existing ditch up to grade in order to avoid environmental impacts on primary nursery area (PNA). The site plan that resulted from these revisions is now the preferred project and is discussed below. Modernization of the K-2 ranges would require the consolidation and realignment of the existing K-2 ranges and the development of training facilities and automated targetry (Figure 7). The existing ranges would be realigned and re-numbered, and would become inactive: Range development would be timed and coordinated so that the majority of existing ranges could continue to be used during construction phases. For example, training at some of the existing ranges would be temporarily rotated to other ranges while the upgraded ranges are being constructed. A description of the four proposed ranges within Phase One, along with some estimates of their sizes, is provided below. Development of these ranges would include the construction of support facilities. PI - Baffled Battle Site Zero (3 ac) - This baffled range would allow for 50 shooters along a firing line to fire to a distance of 30 meters (32.8 yards). It would be outfitted with bullet traps (Figure 8). 10 P2 - Service Rifle (40 ac) - This range for M16 and M4 rifles and shotguns would have 15 firing positions and automated targets ranging from 50 to 550 meters (55 to 601 yards) (Figure 9). P3 - Squad Automatic Weapon. (20 ac) - A range for M249 squad automatic weapons would have automated targets ranging from 50 to 800 meters (55 to 875 yards) (Figure 10). P4 - M203 Grenade Launcher (30 ac) - A range for M203 grenade launchers would have only training practice (TP) ammunition authorized (Figure 11). Targets would be placed up to 400 meters (437 yards) from the firing line. The proposed ranges would be realigned with their surface danger zones barely extending into the New River. The location and alignment of these ranges is designed to avoid impacts to the oyster beds located in Stone Bay. Once appropriate permits have been obtained and coordination with MCB Camp Lejeune's Environmental Management Department has occurred, unexploded ordnance (UXO) cleanup and removal at the existing ranges would begin. Thorough surface and subsurface scans and sweeps for UXO would be conducted in the areas as depicted on Figures 7 - 11. Cleanup and removal of UXO would occur prior to the construction and modernization efforts. All UXO would be disposed of in accordance with proper safety and disposal standards using certified disposal methods. The subsurface investigations would require excavation to a depth of up to 3.3 feet. Once the sweep is complete, soils removed from wetlands would be restored to preconstruction elevations. This UXO removal would allow for maintenance on the existing road network, which is necessary to make the roads passable. Other range debris (e.g. old armor, vehicle hulks, and scrap metal) would be removed and disposed of in accordance with proper disposal procedures. Also, existing berms, targets, and other support systems would need to be removed so that the ranges could be upgraded. Modernizing the K-2 ranges would involve installation of automated target systems, construction of firing pits and bunkers on firing lines, construction of concrete fighting positions, and construction of bleachers. Targets would be installed and support buildings and some mock buildings would be constructed. Vegetation would need to be cleared at many of the upgraded ranges to maintain a line of sight to the targets. Some grading would be required to level out existing contours in the down range areas. Berms, pits, and trenches would be 11 constructed at the realigned ranges. Wooden walls, building facades, and a rubble pile would be built on some of the berms. Vehicle-firing pads (e.g. concrete or gravel pads) would also be constructed on berms. Support buildings include maintenance buildings, classrooms, restrooms, and ammunition supply. Parking lots would be added or expanded. Lighting, fencing, and signs would be installed. Some ranges would accommodate bivouac areas (areas used as a temporary base) nearby. Some ranges would require the installation of obstacle course items: concertina wire, walls, sewer/tunnel/subway system with manholes added, and other artificial and natural barriers. In addition to maintaining the existing road network at the K-2 ranges, new 10-12 foot wide gravel roads would be constructed to provide access to each automated target array (Appendix A). In an effort to minimize impacts to wetlands and streams, all ditch side slopes and road fill slopes were designed by Huntsville Division USACE at 2:1 to decrease the footprint of these features. A 125-foot tall safety tower would be constructed to provide for observation of the river as well as the K-2 ranges and smaller towers would be constructed at most of the upgraded ranges. The types of ammunition and weapons to be used at the realigned ranges would remain the same as currently used at the existing K-2 ranges. Proposed utilization of the modernized K-2 ranges is expected to be about ten percent higher than current levels due to a higher throughput of personnel, which would be possible with the consolidation and realignment. Also, a recently reactivated Marine unit, the 41h Marine Expeditionary Brigade, Anti-terrorism Battalion, would add to the proposed utilization from their training. In addition to the Marine personnel, other military services, the US Coast Guard, allied nationals, and other authorized agency personnel would train at the K-2 ranges. Once proposed range modernization is complete, ranges would be maintained based on evolving training requirements. Additionally, items such as bullet traps could be expected to be installed. The proposed action meets all four evaluation factors listed above. The proposed consolidation and modernization of the K-2 ranges would allow the USMC to fulfill infantry training and readiness manual requirements, individual training standards, mission performance standards, 12 and mission essential task listing. Realignment of ranges would allow for simultaneous use. The UXO removal and construction efforts would be conducted in a manner that allows for the continued use of the majority of existing ranges while modernization efforts are underway. As a result, safety for commercial and recreational boaters on the river would be improved. POTENTIAL ENVIRONMENTAL IMPACTS 404/401 Jurisdictional Areas Phase One of the K-2 Ranges project would permanently impact 14.47 acres of 404 wetlands and 496 linear feet of intermittent stream (Figure 7; Table 2). In addition, 37.59 acres of 404 wetlands would be temporarily impacted during an inspection for UXO. Secondary impacts to wetlands and water quality could occur during and after construction of the project through erosion. Erosion impacts would be temporary and would be minimized by employing applicable soil erosion and sedimentation control techniques at the construction sites. Best management practices for vegetation management and land clearing would also be applied. Table 2. List of permanent and temporary wetland and stream impacts within Phase One of the K-2 Ranges nroiect. Range Wetland Impacts (ac) Stream Impacts (LF) Permanent Temporary PI 2.71 1.63 112 P2 5.58 14.12 384 P3 6.19 21.84 - P4 - - - Total 14.47 37.59 496 Threatened and Endangered ed Species The proposed project would have no effect on the bald eagle or American alligator. With over three miles of separation between the known bald eagle's nest and the K-2 ranges, construction would have no effect on eagle reproduction or foraging. Riparian habitats supporting the American alligator would not be directly affected by the project. While high probability habitat for roughleaf loosestrife is present in the project area, the percentage of surveyed high-probability habitat that actually supports the endangered plant is 13 very low. The presence of hazards associated with UXO prevents personnel from surveying for the plant within the boundaries of the project area. While subterranean UXO sweeps would be conducted in the area of potential habitat, it would be unlikely that a targeted excavation would affect individual roughleaf loosestrife plants. For these reasons, Camp Lejeune has determined that implementation of the proposed action may affect, but is unlikely to adversely affect roughleaf loosestrife. The Base initiated informal consultation with the USFWS regarding the proposed action's effects on roughleaf loosestrife. The USFWS concurred with this determination based upon the relative size of the area and low likelihood of plants being present. Foraging habitat of active RCW clusters would not be impacted by the proposed action. Construction of the grenade complex and a new Rhodes Point Observation Tower would take place within two RCW recruitment partitions. After clearing 39 acres for construction of the grenade complex, the affected partition would retain over 200 acres of potential habitat. Construction of an observation tower would require land clearing of less than one acre. Additionally, the project would not result in forest fragmentation that would hinder eventual occupation of the partitions. The retention of over 200 acres of contiguous, suitable habitat satisfies criteria for recruitment partitions outlined in both Camp Lejeune's Integrated Natural Resource Management Plan and the 2003 Revision of the Recovery Plan for the Red-Cockaded Woodpecker (Picoides borealis) (USMC, November 2001; USFWS, January 2003). Tree clearing within the K-2 impact area would not affect recruitment partitions. Therefore, implementation of the proposed action would not affect active RCW clusters nor would it affect Camp Lejeune's ability to reach its long-term cluster goal. While construction would not directly affect any endangered species or their habitat, upon completion, the projected use of the ranges would change noise levels and patterns. Evidenced by their continuing use of nearby habitats despite noise levels fluctuations from variations in operational tempo, the projected changes in noise levels is not expected to affect protected species. The K-2 ranges and associated SDZs do not support suitable or potential habitat for any other protected species. MITIGATION A variety of mitigation measures has been developed to minimize potential environmental impacts. 14 These include: 4 Construction effects would be controlled using standard management practices such as routine sweeping and wetting to reduce air emissions. • If during construction and site grading any site of potential historical or archaeological significance is encountered, the installation commander would be notified. The unit commander would order actions in the vicinity halted and the area marked. The unit commander would immediately notify the Base archaeologist at (910) 451-7230. Best Management Practices (BMPs) would be used to avoid contamination of stormwater. Mitigation plans would include both short-term (construction phase) and long-term (project life) features to meet the requirements of the Base's Stormwater Pollution Prevention Plan. There will be a significant decrease in river area affected by surface danger zones. • The proposed action is fully consistent with applicable coastal zone management policies. The Base will utilize credits from the Greater Sandy Run Area (GSRA) wetlands mitigation bank to offset proposed wetland impacts. This bank is located within the base, approximately seven miles west of the project site, and has bottomland hardwood credits available. Since the proposed impacts will occur to degraded wetlands and because the mitigation site is located in close proximity to the impact site, a 1:1 mitigation to impact ratio is proposed. Significant revisions to the original site plan have occurred to minimize impacts to streams within the project area. Proposed stream impacts would be to degraded, intermittent stream habitat. Therefore, no compensatory stream mitigation is proposed. 15 J LIST OF FIGURES Phase One Modernization of K-2 Ranges United States Marine Corps Base Camp Lejeune Onslow County, NC July 2008 Figure 1 Vicinity Map Figure 2 Topographic Map Figure 3 SCS Soils Map Figure 4 Aerial Photograph Figure 5 K2 Range Delineation Figure 6 On-Site Alternative #1 Figure 7 On-Site Alternative #2: Preferred Project Figure 8 Preferred Project: P1 Range Figure 9 Preferred Project: P2 Range Figure 10 Preferred Project: P3 Range Figure 11 Preferred Project: P4 Range Appendix A. Engineered Drawings of Proposed Ranges and Roads Appendix B. Notification of Jurisdictional Determination c /0 0 d = o o Q) C d two N J 9 ?e Wa m CL E O Q O L a 1 N 1 U 3 O i >Q m - v 0. d? O LL i w 8 LL IL N C, O O,N r L, N N Q O M w? ?w a wa ? w c w;w w LL X ca co Z 10 O EL CL CL (L 0 LL :) a a - a E 3 L V O O) ? N M a E 11 m d E ~ a c m > w > J m O N V U raoi 0 v a N E ? 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