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HomeMy Public PortalAboutNationwide PermitNATIONWIDE PERMIT 42 Recreational Facilities. Discharges of dredged or fill material into non-tidal waters of the US, excluding non-tidal wetlands adjacent to tidal waters, for the construction or expansion of recreational facilities, provided the activity meets all of the following criteria: a. The discharge does not cause the loss of greater than 1/2-acre of non-tidal waters of the US, excluding non-tidal wetlands adjacent to tidal waters; The discharge does not cause the loss of greater than 300 linear-feet of a stream bed, unless for intermittent stream beds this criterion is waived in writing pursuant to a determination by the District Engineer, as specified below, that the project complies with all terms and conditions of this NWP and that any adverse impacts of the project on the aquatic environment are minimal, both individually and cumulatively; The permittee notifies the District Engineer in accordance with the "Notification" General Condition 13 for discharges exceeding 300 linear feet of impact of intermittent stream beds. In such cases, to be authorized the District Engineer must determine that the activity complies with the other terms and conditions of the NWP, determine the adverse environmental effects are minimal both individually and cumulatively, and waive this limitation in writing before the permittee may proceed; For discharges causing the loss of greater than 1/10-acre of non-tidal waters of the US, the permittee notifies the District Engineer in accordance with General Condition 13; e. For discharges in special aquatic sites, including wetlands, the notification must include a delineation of affected special aquatic sites; f. The discharge is part of a single and complete project; and Compensatory mitigation will normally be required to offset the losses of waters of the US. The notification must also include a compensatory mitigation proposal to offset authorized losses of waters of the US. For the purposes of this NWP, the term "recreational facility" is defined as a recreational activity that is integrated into the natural landscape and does not substantially change preconstruction grades or deviate from natural landscape contours. For the purpose of this permit, the primary function of recreational facilities does not include the use of motor vehicles, buildings, or impervious surfaces. Examples of recreational facilities that may be authorized by this NWP include hiking trails, bike paths, horse paths, nature centers, and campgrounds (excluding trailer parks). This NWP may authorize the construction or expansion of golf courses and the expansion of ski areas, provided the golf course or ski area does not substantially deviate from natural landscape contours. Additionally, these activities are designed to minimize adverse effects to waters of the US and riparian areas through the use of such practices as integrated pest management, adequate stormwater management facilities, vegetated buffers, reduced fertilizer use, etc. The facility must have adequate water quality measures in accordance with General Condition 9, such as a stormwater management facility, to ensure that the recreational facility results in no substantial adverse effects to water quality. This NWP also authorizes the construction or expansion of small support facilities, such as maintenance and storage buildings and stables that are directly related to the recreational activity. This NWP does not authorize other buildings, such as hotels, restaurants, etc. The construction or expansion of playing fields (e.g., baseball, soccer, or football fields), basketball and tennis courts, racetracks, stadiums, arenas, and the construction of new ski areas are not authorized by this NWP. (Section 404) Regional Conditions This NWP may not be used for discharges into forested wetlands, peatlands, vernal pools, playa lakes, kettles, prairie potholes or in wetlands identified in Idaho Department of Fish and Game's Wetland Conservation Strategy as Class I, Class II, reference and habitat sites. Projects may not create fish migration barriers. Intake structures must be designed and maintained to prevent fish entry. Construction must be scheduled to avoid native fish spawning, rearing and migration periods, unless Idaho Department of Fish and Game approval is submitted to the Corps and the Corps determines it is not practicable to avoid these periods (Modifies General Conditions 4 and 20). Disturbed areas must be replanted and stabilized with native vegetation. Vegetation shall be maintained to establish a vegetative root mass to minimize erosion and resultant sediment defivery to the aquatic environment. Avoid disturbing wetland and riparian vegetation, where possible. Non-biodegradable materials, such as plastic netting, that may entrap wildlife or pose a safety concern may not be used for soil stabilization. When riprap is used, it should incorporate bioengineering techniques such as root wads and vegetation for wildlife, unless the Corps determines it is not practicable. (Modifies General Condition 3). Water Quality Certification - Issued with the fo/lowing conditions: Water Quafity Certification (WQC) is denied for projects located on 303 (d) listed stream segments. Projects located on these stream segments will require individual WQC from DEQ. The website for 303 (d) listed waters in the state of Idaho is: http://www2, state, id. us/deq/water/1998_303d/303dlist, pdf Water Quafity Certification (WQC) is denied for projects located in bull trout habitat. Projects in bull trout habitat will require individual WQC from DEQ. The website for bull trout habitat in Idaho is: http ://query. streamnet, org/Request, cfm?crud = BuildQuery &NewQuery = BuildCriteri a&Required = Species&DataCategory = 102&Species = 14&State = 3& Count = 25 Individual water quafity certification from Idaho Department of Environmental Quality (DEQ) is required for projects conducted under NWP 42 for the following a c tivitie s: Discharges into lakes, rivers and streams (except for road crossings) forested wetlands, peatlands, vernal pools, playa lakes, kettles, prairie potholes or in wetlands identified in Idaho Department of Fish and Game's Wetland Conservation Strategy as Class I, Class II, reference and habitat sites. b. Support facilities for recreational activities that exceed 1000 square feet in waters of the United States. c. Projects that involve the loss of more than 300 linear feet along a stream or waterbody or the loss of greater than 1/2 acre of waters of the United States. In-stream projects may not create fish migration barriers. Intake structures for stream diversions must be designed to prevent fish entry. Construction must be scheduled to avoid spawning, rearing and migration periods. 5. Disturbed areas must be replanted with native vegetation and stabilized until vegetative root mass can become established to minimize erosion and resultant sediment delivery to the aquatic environment. Avoid disturbing wetland and riparian vegetation, where possible. Non-biodegradable materials, such as plastic netting, that may entrap wildlife or pose a safety concern may not be used for soil stabilization. When riprap is used, it should incorporate bioengineering techniques using root wads and vegetation for wildlife or applicant must submit a statement why vegetation cannot be planted. General Conditions. General Conditions 10, 13, 17, 25, and 26 are abbreviated. A complete set of Nationwide Permit General Conditions and definitions is located on our Internet homepage at www. nww. usace, army. mil/html/offices/op/rf/rfhome, htm. The following General Conditions must be followed in order for any authorization by an NWP to be valid: Navigation. No activity may cause more than a m/n/ma/adverse effect on navigation. Proper Maintenance. Any structure or fill authorized shall be properly maintained, including maintenance to ensure public safety. Soil Erosion and Sediment Controls. Appropriate so//eros/on and sediment controls must be used and maintained in effective operating condition during construction, and afl exposed so//and other fi/is, as we//as any work be/ow the ordinary high water mark or high t/de//ne, must be permanently stabilized at the earliest practicable date. Perm/trees are encouraged to perform work within waters of the Un/ted States during per/ods of/ow-f/ow or no-f/ow. 4. Aquatic Life Movements. No activity may substantially disrupt the necessary life- cycle movements of those species of aquatic life indigenous to the waterbody, including those species that normally migrate through the area, unless the activity's primary purpose is to impound water. Culverts placed in streams must be installed to maintain low flow conditions. Equipment. Heavy equipment working/n wetlands must be p/aced on mats, or other measures must be taken to minimize so//disturbance. Regional and Case-By-Case Conditions. The activity must comply with any regional conditions that may have been added by the D/v/s/on Engineer (see 33 CFR 330.4(e)) and w/th any case specific conditions added by the Corps or by the state or tribe/n/ts Sect/on 401 Water Quality Certification and Coastal Zone Management Act consistency determination. Wild and Scenic Rivers. No activity may occur/n a component of the National Wild and Scenic River System; or/n a river off/c/ally designated by Congress as a "study river" for possible/nc/us/on/n the system, while the river/s/n an off/c/al study status; un/ess the appropriate Federal agency, w/th direct management responsibility for such river, has determined/n writing that the proposed activity w/Il not adversely affect the Wild and Scenic River des/gnat/on, or study status. information on W/Id and Scenic Rivers may be obtained from the appropriate Federal/and management agency/n the area (e.g., National Park Service, U.S. Forest Service, Bureau of Land Management, U.S. Fish and W#d//fe Service). Tribal Rights. No activity or/ts operation may impair reserved tribal rights, including, but not I/m/ted to, reserved water rights and treaty fishing and hunting rights. Water Quality. a. /n certain states and tribal/ands an individual 401 Water Quafity Certification must be obtained or waived (See 33 CFR 330.4(c)). For NWPs 12, 14, 17, 18, 32, 39, 40, 42, 43, and 44, where the state or tribal 401 certification (either generically or individually) does not require or approve water quafity management measures, the permittee must provide water quality management measures that wi//ensure that the authorized work does not result in more than minimal degradation of water quality (or the Corps determines that compliance with state or local standards, where applicable, will ensure no more than minimal adverse effect on water quafity). An important component of water quality management includes stormwater management that minimizes degradation of the downstream aquatic system, including water quafity (refer to General Condition 21 for stormwater management requirements). Another important component of water quality management is the establishment and maintenance of vegetated buffers next to open waters, including streams (refer to General Condition 19 for vegetated buffer requirements for the NWPs). This condition is only applicable to projects that have the potential to affect water quality. While appropriate measures must be taken, in most cases it is not necessary to conduct detailed studies to identify such measures or to require monitoring. 10. Coastal Zone Management. Does not apply/n Idaho. 11. Endangered Species. a. No activity/s authorized under any NWP which/s likely to jeopardize the continued existence of a threatened or endangered species or a spec/es proposed for such des/gnat/on, as/dent/f/ed under the Federal Endangered Spec/es Act (ESA), or which w/Il destroy or adversely mod/fy the critical habitat of such spec/es. Non-federal perm/trees shall not/fy the D/strict Engineer/f any listed spec/es or designated critical habitat might be affected or /s /n the vicinity of the project, or/s located/n the designated critical habitat and shall not begin work on the activity until not/f/ed by the D/strict Engineer that the requirements of the ESA have been satisfied and that the activity/s author/zed. For act/v/t/es that may affect Federally-listed endangered or threatened spec/es or designated critical habitat, the not/f/cat/on must include the name(s) of the endangered or threatened spec/es that may be affected by the proposed work or that utilize the designated critical habitat that may be affected by the proposed work. As a result of formal or informal consultation w/th the FWS or NMFS the District Engineer may add spec/es-specific regional endangered spec/es conditions to the NWPs. Authorization of an activity by a NWP does not authorize the "take" of a threatened or endangered species as defined under the ESA. In the absence of separate authorization (e.g., an ESA Section 10 Permit, a Biological Opinion with "incidental take" provisions, etc.) from the USFWS or the NMFS, both lethal and non-lethal "takes" of protected species are in violation of the ESA. Information on the location of threatened and endangered species and their critical habitat can be obtained directly from the offices of the USFWS and NMFS or their world wide web pages at h ttp ://www. fws. go v/r9endspp/endspp, h tml and h ttp ://www. n fins. noss. go vip ro t_res/o vervie w/es. h tml respectively. 12. Historic Properties. No activity which may affect historic properties listed, or eligible for l/sting, /n the National Register of Historic P/aces/s author/zed, until the D/strict Engineer has compiled w/th the provisions of 33 CFR part 325, Appendix C. The prospective perm/tree must not/fy the D/strict Engineer/f the author/zed activity may affect any historic properties listed, determined to be eligible, or which the prospect/ye perm/tree has reason to believe may be eligible for l/sting on the National Register of Historic P/aces, and shall not begin the activity until not/f/ed by the D/strict Engineer that the requirements of the National Historic Preservation Act have been satisfied and that the activity/s author/zed. Information on the location and existence of historic resources can be obtained from the State Historic Preservation Off/ce and the National Register of Historic P/aces (see 33 CFR 330.4(g)). For act/v/t/es that may affect historic properties listed in, or eligible for l/sting in, the National Register of Historic P/aces, the not/f/cat/on must state which historic property may be affected by the proposed work or include a vicinity map indicating the location of the historic property. 13. Notification. This genera/condition is sat/stied. 14. Compliance Certification. Every permittee who has received NWP verification from the Corps will submit a signed certification regarding the completed work and any required m/t/gat/on. The certification w/Ii be forwarded by the Corps w/th the authorization letter and will include: a. A statement that the authorized work was done in accordance with the Corps authorization, including any general or specific conditions; b. A statement that any required mitigation was completed in accordance with the permit conditions; and c. The signature of the permittee certifying the completion of the work and mitigation. 15. Use of Multiple Nationwide Permits. The use of more than one NWP for a single and complete project is prohibited, except when the acreage loss of waters of the US author/zed by the NWPs does not exceed the acreage i/mit of the NWP w/th the highest spec/f/ed acreage i/mit (e.g. if a road crossing over t/da/waters is constructed under NWP 14, w/th associated bank stabilization author/zed by NWP 13, the max/mum acreage loss of waters of the US for the total project cannot exceed 1/3-acre). 16. Water Supply Intakes. No activity, including structures and work in navigable waters of the US or discharges of dredged or f/ii mater/a/, may occur in the proximity of a public water supply intake except where the activity is for repair of the public water supply intake structures or adjacent bank stabilization. 17. Shellfish Beds. Does not apply in Idaho. 18. Suitable Material. No activity, including structures and work in navigable waters of the US or discharges of dredged or f/ii mater/a/, may cons/st of unsuitable mater/a/ (e.g., trash, debris, car bodies, asphalt, etc.) and mater/a/used for construct/on or discharged must be free from toxic pollutants in toxic amounts (see sect/on 307 of the CWA). 19. Mitigation. The D/strict Engineer will consider the factors discussed below when determining the acceptability of appropriate and practicable mitigation necessary to offset adverse effects on the aquatic environment that are more than m/n/ma/. The project must be designed and constructed to avoid and minimize adverse effects to waters of the US to the maximum extent practicable at the project site i.e., on site). b. Mitigation in all its forms (avoiding, minim/zing, rectifying, reducing or compensating) will be required to the extent necessary to ensure that the adverse effects to the aquatic environment are minimal. Compensatory mitigation at a minimum one-for-one ratio will be required for all wetland impacts requiring a PCN, unless the District Engineer determines in writing that some other form of mitigation would be more environmentally appropriate and provides a project-specific waiver of this requirement. Consistent with National policy, the District Engineer will establish a preference for restoration of wetlands as compensatory mitigation, with preservation used only in exceptional circumstances. Compensatory mitigation (i. e., replacement or substitution of aquatic resources for those impacted) will not be used to increase the acreage losses allowed by the acreage limits of some of the NWPs. For example, 1/4-acre of wetlands cannot be created to change a 3/4-acre loss of wetlands to a 1/2-acre loss associated with NWP 39 verification. However, 1/2-acre of created wetlands can be used to reduce the impacts of a 1/2-acre loss of wetlands to the minimum impact level in order to meet the minimal impact requirement associated with NWPs. To be practicable, the mitigation must be available and capable of being done considering costs, existing technology, and logistics in light of the overall project purposes. Examples of mitigation that may be appropriate and practicable include, but are not limited to: reducing the size of the project; establishing and maintaining wetland or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating, restoring, enhancing, or preserving similar functions and values, preferably in the same watershed. Compensatory mitigation plans for projects in or near streams or other open waters will normally include a requirement for the establishment, maintenance, and legal protection (e.g., easements, deed restrictions) of vegetated buffers to open waters. In many cases, vegetated buffers will be the only compensatory mitigation required. Vegetated buffers should consist of native species. The width of the vegetated buffers required will address documented water quality or aquatic habitat loss concerns. Normally, the vegetated buffer will be 25 to 50 feet wide on each side of the stream, but the District Engineers may require slightly wider vegetated buffers to address documented water quality or habitat loss concerns. Where both wetlands and open waters exist on the project site, the Corps will determine the appropriate compensatory mitigation (e.g., stream buffers or wetlands compensation) based on what is best for the aquatic environment on a watershed basis. In cases where vegetated buffers are determined to be the most appropriate form of compensatory mitigation, the District Engineer may waive or reduce the requirement to provide wetland compensatory mitigation for wetland impacts. Compensatory mitigation proposals submitted with the "notification" may be either conceptual or detailed. If conceptual plans are approved under the verification, then the Corps will condition the verification to require detailed plans be submitted and approved by the Corps prior to construction of the authorized activity in waters of the US. Permittees may propose the use of mitigation banks, in-lieu fee arrangements or separate activity-specific compensatory mitigation. In all cases that require compensatory mitigation, the mitigation provisions will specify the party responsible for accomplishing and/or complying with the mitigation plan. 20. Spawning Areas. Act/v/ties, including structures and work in navigable waters of the US or discharges of dredged or fill mater/a/, in spawning areas during spawning seasons must be avoided to the max/mum extent practicable. Act/v/t/es that result in the physical destruction (e.g., excavate, fill, or smother downstream by substantial turbidity) of an important spawning area are not author/zed. 21. Management of Water Flows. To the maximum extent practicable, the activity must be designed to maintain preconstruction downstream f/ow conditions (e.g., location, capacity, and f/ow rates). Furthermore, the activity must not permanently restrict or impede the passage of normal or expected high flows (un/ess the pr/mary purpose of the fill is to impound waters) and the structure or discharge of dredged or fill mater/a/must withstand expected high flows. The activity must, to the max/mum extent practicable, provide for retaining excess flows from the site, provide for maintaining surface f/ow rates from the site similar to preconstruction conditions, and provide for not increasing water flows from the project site, relocating water, or redirecting water f/ow beyond preconstruction conditions. Stream channel/zing will be reduced to the m/n/ma/amount necessary, and the activity must, to the max/mum extent practicable, reduce adverse effects such as flooding or eros/on downstream and upstream of the project site, un/ess the activity is part of a larger system designed to manage water flows, in most cases, it will not be a requirement to conduct detailed stud/es and monitoring of water flow. This condition is only applicable to projects that have the potential to affect waterflows. While appropriate measures must be taken, it is not necessary to conduct detailed studies to identify such measures or require monitoring to ensure their effectiveness. Normally, the Corps will defer to state and local authorities regarding management of water flow. 22. Adverse Effects From Impoundments. If the activity creates an impoundment of water, adverse effects to the aquatic system due to the acceleration of the passage of water, and/or the restricting/ts f/ow shall be m/n/m/zed to the max/mum extent practicable. This includes structures and work in navigable waters of the US, or discharges of dredged or f/ii material. 23. Waterfowl Breeding Areas. Act/v/ties, including structures and work in navigable waters of the US or discharges of dredged or fill mater/a/, into breeding areas for migratory waterfowl must be avoided to the max/mum extent practicable. 24. Removal of Temporary Fills. Any temporary fills must be removed in their entirety and the affected areas returned to their preexisting elevation. 25. Designated Critical Resource Waters. This general condition is sat/stied. 26. Fills Within lO0-Year Floodplains. This general condition is sat/stied. 27. Construction Period. For act/v/ties that have not been verified by the Corps and the project was commenced or under contract to commence by the expiration date of the NWP (or mod/f/cat/on or revocation date), the work must be completed within 12-months after such date (including any mod/f/cat/on that affects the project). For activities that have been verified and the project was commenced or under contract to commence within the verification period, the work must be completed by the date determined by the Corps. For projects that have been verified by the Corps, an extension of a Corps approved completion date maybe requested. This request must be submitted at least one month before the previously approved completion date. MODIFICATIONS TO NWP GENERAL CONDITIONS: 1. Miti,qation. Project m/t/gat/on plans must include: a. A statement detailing why the discharge must occur in waters of the United States, how the project has been designed to minimize impacts and why additional avoidance or minimization cannot be achieved. b. Provisions for permanent protection of the mitigation site through use of conservation easements, deed restrictions, protective covenants, land trusts or other means of long-term preservation. Mitigation wetlands must be designed to be self- sustaining. Long-term protection shall specify how the mitigation site shall be managed. For instance, whether grazing, mowing, burning, spraying, cutting of vegetation, or other type of management that could reduce wetland functions and values is allowed. c. A //st of performance criteria for determining m/t/gat/on success (for example, the dominant p/ant spec/es//st, acreage of each habitat type to be created, source of hydrology, m/t/gat/on concurrent w/th project construct/on, method to control/nvas/ve spec/es, etc.) R/par/an zones should be rep/anted w/th native vegetation and maintained. M/t/gat/on success will, generally, be achieved when the m/t/gat/on wet/ands meet the wet/and criteria in the 1987 Wet/and Delineation Manual and 80 percent of the m/t/gat/on areas are covered w/th native vegetation for 2 consecutive years, within 4 years after construct/on. /nvas/ve spec/es must be controlled, as practicable, and a contingency p/an must be/dent/f/ed (Mod/f/es Genera/Condition 19). d. A monitoring p/an for the mit/gat/on site, based on the performance criteria, until m/t/gat/on is successful. 2. Endangered Species. Non-federal applicants must contact either their local Idaho Department of Fish and Game or the U.S. Fish and Wildlife Service to determine if any listed species or designated critical habitat might be in the vicinity of their project. To contact U.S. Fish and Wildlife Service in Bonner, Boundary, Kootenai, Shoshone, Benewah and Latah Counties, contact Mr. Rick Donaldson at 509-893-8009, e-mail rick donaldson~fws.~ov. To contact U.S. Fish and Wildlife Service for other counties in Idaho, contact Ms. Carol Wanstrom at 208-378-5388, or by e-mail carol_wanstrom~fws, gov. Applicants must notify the District Engineer of their finding (Modifies General Condition 11). 3. Historic Properties. Applicants must contact the Idaho State Historic Preservation Office (SHPO) at 208-334-3847 to determine if their project may affect historic properties listed in the National Register of Historic Places (allow 30-90 days), and notify the District Engineer according to General Condition 12 if SHPO advises them their activity may affect historic properties (Modifies General Condition 12). 4. Temporary Fills. Temporary fills must be entirely removed from waters of the United States when they are no longer needed for the project. Where practicable, permanent disposal of temporary fills must be outside the l O0-year floodplain. Temporary stockpiles may not be placed so a berm or levee is formed parallel to the stream that could confine flows and restrict overbank flow access to the floodplain (Modifies General Condition 24). 5. Avian Breeding Areas. Nationwide Permits do not obviate the requirement to comply with the Migratory Bird Treaty Act. This act prohibits individuals, government agencies, or corporations from taking a migratory bird, whether the taking is intentionaI or unintentional. U.S. Fish and Wildlife Service is the primary Federal agency responsible for the conservation and management of migratory bird resources. Applicants should contact Mr. Rick Donaldson at 509-893-8009, e-mail rick_donaldson@fws, gov. for additional information. REGIONAL DEFINITIONS 1. Forested wetlands: Wetlands characterized by woody vegetation that is 6 meters tall or taller. They are located where moisture is relatively abundant, particularly along rivers and in the mountains and normally possess an overstory of trees and an understory of young trees or shrubs and a herbaceous layer. Reference: Classification of Wetlands and Deepwater Habitats of the United States, Mr. Lewis M. Cowardin, Office of Biological Services, Fish and Wildlife Service, 1979. 2. High value wetlands: Forested wetlands, peatlands, vernal pools, playa lakes, kettles, prairie potholes, and Class I, Class II, reference, and habitat sites identified in Wetland Conservation Strategies prepared by the Idaho Department of Fish and Game, Conservation Data Center. 3. Invasive species: Species of plants that are not native to an area and whose establishment is likely to cause economic or environmental harm or harm to human health. 4. Kettle: A steep sided, usually basin or bowl shaped hole or depression, commonly without surface drainage, in glacial drift deposits, often containing a lake or swamp. Reference: Bates, Robert L. and Jackson, Julia A., Glossary of Geoloqv, American Geological Institute, Falls Church, 1980. 5. Native species: Species that historically occur in a particular ecosystem, and are not in troduced. 6. Peatland: Any waterlogged area containing an accumulation of peat 30 centimeters or more thick. Any type of peat-covered terrain, including fens and bogs. Peat is organic matter (the dead remains of plants) deposited under water soaked conditions as a result of incomplete decomposition. 7. Playa: Shallow, intermittent ephemeral wet depression or lake in the lowest part of an undrained basin that usually dries up in summer and leaves an unvegetated flat. Playas often are underlain by stratified layers of clay, silt, sand and soluble salts and are usually located in arid or semi-arid regions. 8. Prairie Pothole: Closed, shallow to medium deep, bowl-shaped depression in areas typically dominated by grassland vegetation. Surface water can be missing in some shallow depressions during years of drought. Plant communities tend to be dominated by perennial rather than annual plants. 9. Vernal Pool: Shallow, intermittently flooded wet meadow, generally dry for most of the summer and fall. Further Information District Engineers have authority to determine if an activity complies with the terms and conditions of an NWP. NWPs do not obviate the need to obtain other Federal, state, or local permits, approvals, or authorizations required by law. 3. NWPs do not grant any property rights or exclusive privileges. 4. NWPs do not authorize any injury to the property or rights of others. 5. NWPs do not authorize interference with any existing or proposed Federal project.