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HomeMy WebLinkAbout20070522 Ver 1_More Info Received_20070529May 25, 2007 Cyndi Karoly North Carolina Department of Environment and Natural Resources (DENR~.~ n. ~..,, ~ F , t,.,~ MiF' , ,. ,, `.' fn~~ Division of Water Quality (DWQ) ,-~,,. " . ,,~ 401/Wetlands Unit, ~~ ~ `'~" 1650 Mail Service Center, 4~~~,Y ~ a' ~U~al Raleigh, NC, 27699-1650 .~,: `~ii,T t. ,,_.. Re: Revised Permit Application -Town of Newland North Toe River Stream Stabilization and Constructed Wetland Dear Ms. Karoly, Attached are five copies of the revised permit application for the above referenced project. The permit application was revised to reflect a recent wetland delineation on the subject property performed by the Army Corps of Engineers and to address comments from your letter to the Town of Newland received on April 17, 2007. On May 9, 2007, Amanda Jones (Regulatory Project Manager, US Army Corps of Engineers, Asheville, NC office) and staff delineated the boundaries of the existing wetland on the subject property. NC State staff subsequently surveyed in the limits of the existing wetland on site. The total existing wetland acreage is approximately 0.16-acres and the proposed stormwater wetland project will impact approximately 0.05-acres of the existing wetland. Note that the initial application submitted to DWQ stated that 1.5-acres of wetland would be impacted by the project. The current submittal reflects new information obtained by the Army Corps of Engineers recent wetland delineation and should replace the information in the initial application. The letter from DWQ received by the Town of Newland outlined three items needed to complete the permit review, which are listed below in italics. The revised permit application addresses these three items as described below. 1. Please show all stream impacts including all fill slopes, dissapaters, and bank stabilization on the site plan at a scale of no smaller than 1 "=50'. The initial permit application provided a plan sheet at a scale of 1"=100'. The revised application provides an overview map at 1"=100' and a more detailed plan sheet at 1"=50'. w Ms. Cyndi Karoly May 25, 2007 Page 2 of 2 2. Please locate all existing wetlands on the site plan at a scale of no smaller than 1 "=50'. The limits of the existing wetland delineated by the Army Corps of Engineers on May 9, 2007 is included on the attached plan sheet. 3. Please show all wetland impacts including fill slopes on the site plan at a scale of no smaller than 1 "=50'. As stated above, the revised plan sheet presents the limits of the existing wetland and the footprint of the proposed stormwater wetland. We appreciate your assistance with this project. Please do not hesitate to contact me if you have any questions or need additional information. Sincerely, Zan Price (828) 545-8347 Office Use Only: Form Version March OS USACE Action ID No. DWQ No. D~ - D s a a fit any pamcuiar item is not applicable to this project, please enter "Not Applicable" or "N/A".) I. Processing Check all of the approval(s) requested for this project: X Section 404 Permit ^ Riparian or Watershed Buffer Rules ^ Section 10 Permit ^ Isolated Wetland Permit from DWQ X 401 Water Quality Certification ^ Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: NWP 27 If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ^ 4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII, and check here: ^ 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal. Management Area of Environmental Concern (see the top of page 2 for further details), check here: ^ ~ ° ~-~~, II. Applicant Information r, s, ~ -~- ~.4; 1. Owner/Applicant Information :~,.' Name: Mrs. Brenda Pittman- Town of Newland ~:.- .,:;: Mailing Address: P.O Box 429 '~'' ""`i~^ ~ - . ? ~,~7~:wi:N Newland, NC 28657 Telephone Number: 828-733-2023 Fax Number: 828-733-2069 E-mail Address: Brenda(a,newland~ov.com 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Company Affiliation: Mailing Address: Telephone Number: E-mail Address: Fax Number: Page 5 of 15 III. Project Information Attach avicinity -map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: Town of Newland North Toe River Stream Stabilization and Constructed Wetland 2. T.LP. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): 183614421911 4. Location County: Avery Nearest Town: Newland Subdivision name (include phase/lot number): N/A Directions to site (include road numbers/names, landmarks, etc.): From Asheville, take I-40 East to exit 72 (Old Fort and mere onto US-70. Turn left onto US-221/NC-226. Stay on US-221 for approximately 28 miles and then turn left onto NC=194 (Millers Gap Hwy) Follow NC-194 to downtown Newland and turn left on Titi Street The project can be accessed where Titi Street intersects with Pharmacy Street. See Figure 1 for site location 5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) Decimal Degrees (6 digits minimum): 36.0855 °N 81.9309 °W 6. Property size (acres): 7. Name of nearest receiving body of water: North Toe River 8. River Basin: French Broad River Basin (Note -this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) 9. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The site consists of a vacant floodplain field adjacent to Page 6 of 15 downtown Newland. The North Toe River transects the~roperty from- south to north. The stream classification for the North Toe River on this property is WS-V Tr (Trout) according to the North Carolina Division of Water Quality. An historic levee exists along_portions of the streambank on the property. During the. last site visit on February 5 2007 a beaver dam was observed in the river channel. The property was recently purchased by the Town of Newland and is not currently used. The property has been historically used as a hay field The general land use in the vicinity of the site is commercial to the east and residential to the west. See the attached photos for a representative view of the current site conditions. 10. Describe the overall project in detail, including the type of equipment to be used: The Town of Newland would like to develop the property for use as a public green space The project will consist of two hp ases. Phase 1: The first phase consists of constructing_ a 1.4-acre Stormwater wetland on the eastern portion of the property (See attached plan sheet for the proposed wetland footprint and contours). Stormwater runoff from downtown Newland will be routed through the wetland for treatment prior to discharge to the North Toe River. Stormwater wetlands are effective at removingsediment, nutrients metals and chemicals from runoff. A flashboard riser outlet structure will be utilized to control the water surface in the wetland The wetland was designed to capture and treat the runoff produced by the first flush (precipitation = 1 2 inches) from a 17-acre drainage area from a portion of downtown Newland The outlet structure was designed to drawdown this volume of water over a 72-hour period to optimize the stormwater treatment. An emergency spillway was designed to .convey and discharge the runoff from significant rainfall events ~>2-year storm) at non-erosive velocities The proposed vegetation for the constructed wetland is presented below. Phase 2: The second phase of the project will consist of streambank stabilization in eroding areas on the North Toe River. The beaver dam will be removed if it still exists on the property once construction begins See attached plan sheet for the proposed stabilization measures. Streambank stabilization structures such as rock cross vanes and single vanes will be located to protect infrastructure provide public access discourage erosion and improve instream habitat. Construction will not start on the second phase until the end of the trout moratorium on April 15. As stated earlier in Section 9 of this permit application an historic levee exists along portions of the streambank. Portions of the levee are stabilized with a food stand of willows. The portions of the levee that are not stabilized by native ve etg ation will be removed to reconnect the river to its floodplain. Due to the size of the river it is not feasible to pump around the project site. Instream work in the wet will be minimized. The contractor shall work in the dry from the streambanks whenever possible. Temporary and permanent seeding Temporary seeding will be used for erosion control during construction and until permanent vegetation can be established. Temporary mixtures include annual ground covers that grow quickly and provide ground cover stabilizing the soil and minimizing erosion and sedimentation. If the project is completed in the summer a 50:50 mix of Browntop Millet (Panicum ramosum) and Pearl Millet (Penniseteum lag_cum) applied at a minimum rate of at Page 7 of 15 least 10 pounds/acre will be used to stabilize the site. If the project is completed in the winter a 50.50 mix of winter wheat (Triticum aestivum and rYe rain Secale cereale) will be applied at a minimum rate of at least 10 pounds/acre. A permanent seed mix will also be applied. The permanent seed mix will include warm season grasses cool season grasses and wetland species and will be applied at 12-15 pounds/acre All permanent species will consist of native perennial ground covers that are suited to being temporarilyinundated. Floodplain sites will be mulched main after permanent seeding. The seeding mix at these locations will consist of flood plain species. Mulching Mulching will be used to provide temporaryprotection of soil surfaces from erosion. Clean grain straw mulch will be applied uniformly and tacked with hydromulch. Permanent vegetation A mixture of container stock and bare root vegetation will be used to plant woody vegetation. Since bare root stock must be planted while the plants are dormant, the proportion and timing of bare root planting will defend on the timing of project completion A random assortment of shrub and tree species will be planted along both sides of the streambank and in the floodplain (see Vegetation specification below for more detail). Wetland vegetation Permanent wetland vegetation will be planted within the excavated wetland area. A combination of seeds plugs and container and bare root stock will be used. Species will be selected from the following list based on availability: Juncus effusus Soft Rush Scirpus cyperinus Wool Grass Carex spp Sedges Peltandra virginica Arrow Arum Iris virginica Blue Flag Pontederia cordata Pickerelweed Rosa palustris Swamp Rose Sagittaria latifolia Broad Leaf Arrowhead Hibiscus moscheutos Swamp Mallow Rose Asclepias incarnata Swamp Milkweed Monarda didyma Bee Balm Echinacea purpurea Purple Cone Flower Liatris spicata Blazing Star Lobelia cardinalis Cardinal Flower Lobelia siphilitica Great Lobelia Ilex verticillata Winterberry Lindera benzoin Spicebush Physocarpus opulifolius Ninebark Sambucus Canadensis Elderberry Spirea alba White Spirea Spirea tomentosa Pink Spirea Vibernum cassinoides Wild Raisin Aroma melanocarpa Black Chokeberry Page 8 of 15 Streambank vegetation Streambank disturbance will be limited to areas of structure installation and levee removal Disturbed areas will be planted with live stakes To increase diversity along the Streambank container and bare root stock will also be planted in undisturbed areas These will be selected from the following list based on availability Betula nigra River Birch Fraxinus pennsylvanica Green Ash Platanus occidentalis Sycamore Salix nigra Black Willow Aesculus octandra Yellow Buckeye Alnus serrulata Tag Alder Amelanchier arborea Serviceberry Amnia arbutifolia Red Chokeberry Corms amomum Silky Dogwood Hamamelis virginiana Witch-Hazel Ilex verticillata Winter Berry Lindera benzoin Spicebush Leucothoe axillaries Doghobble Equipment needed for such activities may include but is not limited to 1-Tracked Excavator 1-Dump Truck, 1 tracked skid-steer and 1-front-end loader 11. Explain the purpose of the proposed work: To increase the stability of the North Toe River on the Town's property and to reduce erosion and sediment impacts downstream while increasing habitat. Furthermore to treat runoff from the Town of Newland rior to discharge to the North Toe River. This site has tremendous potential for educational and recreational benefits. It will provide and excellent resource for students to het hands on experience in the field of water quality and environmental management. The NC Cooperative Extension "Kids in the Creek" program would be able to utilize this site for watershed water quality and stream ecolo~y education. "Kids in the Creek" is a program that is already well established through the Avery County Cooperative Extension having 1 650 participants in 2005 This site is an ideal location to educate students of all ayes about_stream ecolo~v, watersheds, clean water and the rotection of our natural resources. This site will also serve as a model for landowners in the county to learn how then can implement best management practices (BMP's) on their land to protect and restore their streams. Agencies will have demonstration workshops and tours at the project site to educate others in this field of watershed mana ement. Page 9 of 15 IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. N/A No permits or determinations were previously applied for. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. No future permit requests anticipated. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. Each impact must be listed separately in the tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and must be labeled and clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) should be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. Provide a written description of the proposed impacts: Proposed impacts will be temporary and include streambank stabilization and installation of instream structures (e.g., rock crossvanes), removal of an historic streambank levee, and beaver dam removal. Streambank stabilization structures will be located to protect infrastructure, provide public access, discourage erosion, and improve instream habitat. No wetlands were shown on the~roperty on the US Fish and Wildlife National Wetland Inventory maps. However, Amanda Jones (US Army Corps of En ig neers) and staff delineated the existinP wetland on Mav 9, 2007 and NC State surveyed the limits of the wetland see attached plan sheet). In an email describing the Corp's site visit on Mav 9, 2007 Ms. Jones stated, "Based on the project purpose, minimal impacts to existing wetlands, and expected water quality improvements from the work, a Nationwide Permit #27 or a Nationwide Permit #18 is appropriate to authorize this permit ". Page 10 of 15 The floodplain area will be enhanced by excavating areas to create shallow water, shallow land, and deeper pools. Existing ditches on the floodplain to the river will be plug eg d to restore the area to a more natural wetland state. Precautions will be taken to keep heav~quipment out of the stream channel except where absolutely necessary to install bank stabilization measures. Work will be conducted in the dry to the extent practicable. Sediment and erosion control measures, including silt fences and reseeding, will be utilized to minimize sedimentation. Upon completion, the site will be stabilized with native vegetation plantings (see part 10 of section III of this permit). A plan drawing, vicinity map and photos are attached. 2. Individually list wetland impacts. Types of impacts include, but are not limited to mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. Wetland Impact Type of Wetland Located within Distance to Area of Site Number Type of Impact (e.g., forested, marsh, 100-year Floodplain Nearest Stream Impact (acres) (indicate on map) herbaceous, bog, etc.) (yes/no) (linear feet) WL-1 Wetland Enhancement Herbaceous yes 25 0.05 Total Wetland Impact (acres) 0.05 3. List the total acreage (estimated) of all existing wetlands on the property: 0.16 acres* *Amanda Jones (Regulatory Project Manager, US Army Corps of Engineers, Asheville, NC office) and staff delineated the boundaries of the existing wetlands on May 9, 2007) 4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. To calculate acreage. multiply length X width, then divide by 43,560. Stream Impact Number (indicate on map) Stream Name Type of Impact Perennial or Intermittent? Average Stream Width Before Impact Impact Length (linear feet) Area of Impact (acres) North Toe River North Toe River Bank Stabilization Perennial 55 (TOB) 930 1.2 Total Stream Impact (by length and acreage) 930 1.2 5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.). Open water impacts include, but are not limited to fill_ excavation_ dred~ina. flooding. drainage. bulkheads. etc. Open Water Impact Name of Waterbody Type of Waterbody Area of Site Number (if applicable) Type of Impact (lake, pond, estuary, sound, bay, Impact ~, (indicate on map) ocean, etc.) (acres) ~ none Total Open Water Impact (acres) Page 11 of 15 6. List the cumulative impact to all Waters of the U.S. resulting from the proiect: Stream Impact (acres): 1.2 Wetland Impact (acres): .OS Open Water Impact (acres):. 0.0 Total Impact to Waters of the U.S. (acres) 1.25 Total Stream Impact (linear feet): 930 7. Isolated Waters Do any isolated waters exist on the property? ^ Yes X No Describe all impacts to isolated waters, and include the type of water (wetland or stream) and the size of the proposed impact (acres or linear feet). Please note that this section only applies to waters that have specifically been determined to be isolated by the USACE. No impact 8. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ^ uplands ^ stream ®wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): The stormwater wetland will be created by excavation in the floodplain adjacent to the river. A flashboard riser will be installed for the outlet device. The outlet will be sized so the runoff from the first flush (precipitation = 1.2 inches) will drawdown slowly over a three day period. An emergency spillway will be constructed to bypass runoff from the 2-year storm and greater. Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): The purpose of the wetland is to treat stormwater runoff from downtown Newland and to educate the public about water quality issues and wetland ecosystems. Current land use in the vicinity of the pond: vacant field and floodplain Size of watershed draining to pond: 17 acres Expected pond surface area: 1.4 acres VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. This project is designed to provide a net fain in aquatic function for both the stream and the wPtlanrl Page 12 of 15 VIII. Mitigation DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams. USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide Permits, published in the Federal Register on January 15, 2002, mitigation will be required when necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including size and type of proposed impact and function and relative value of the impacted aquatic resource will be considered in determining acceptability of appropriate and practicable mitigation as proposed. 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 and/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, preferable in the same watershed. If mitigation is required for this project, a copy of the mitigation plan must be attached in order for USACE or DWQ to consider the application complete for processing. Any application lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete. An applicant may also choose to review the current guidelines for stream restoration in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at http://h2o.enr.state.nc.us/ncwetlands/strmgide.html. 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. No mitigation plan is needed 2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at (919) 715-0476 to determine availability, and written approval from the NCEEP indicating that they are will to accept payment for the mitigation must be attached to this form. For additional information regarding the application process for the NCEEP, check the NCEEP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Page 13 of 15 Amount of stream mitigation requested (linear feet): Amount of buffer mitigation requested (square feet): Amount of Riparian wetland mitigation requested (acres): Amount ofNon-riparian wetland mitigation requested (acres): Amount of Coastal wetland mitigation requested (acres): IX. Environmental Documentation (required by DWQ) 1. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land? Yes X No ^ (State-Division of Water Resources) 2. If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ^ No X 3. If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ^ No ^ X'. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts, must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. 1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ^ No X 2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. * Zone Impact (s uare feet) Multiplier Required Miti ation I 3 (2 for Catawba) 2 1.5 Total * Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an additiona120 feet from the edge of Zone 1. Page 14 of 15 ~. 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Yc;s [~ ~a Is this ~~ ~tt~tc;2-th~_f~rrr:t p~:rmit applicat~cJn? it's (~ a I'b'. uxnul.ati~we Itilp;~cis (required by ~'6VQ t~a'ili thus p~~~~r~ {l ~.,tci t~r~ fast and''. r'e~,.s~?rlahly~ ~~ti~~i~.~tcci futtt~e ~paets} result in ~dditicsn[ i,it:.'`,'ti~rgp?Yif'i? ~a\Ii1tIT i:C)CiCj lra;~.1f1%~ 11f:~.r'~~` t:ii)'vi~';]~~_f'y:~r'Il 1~41'.'.i (I:.~.ltt~`~ ~e ~ ~a I#`y't:~, pler:~, w~,shrlit a cli.Iiitatve -~r quantbzat2~t. ~G-~~ul:r~ive trt~pact analysis in acardar~ce with tt~e mast ricer.. Itic~rth C,a~c~'.in`3 Dir.~isirJn ~f ~~'~i~ri (~<~Sty palic~r pasted r~r~ cur ~°ebsite at http:>~1h?a.er r,e i :~; r7,,_~ . ~ = C'tI_~rr~d~. If nr~, please prt~vde ~ sham narrative descriptian: 7~a~'. Cher ircumtstanees ~()ptiunl)t It is the .r,?lYt.~«rt~ s responsibility tc~ submit ,I~~• alaplicaticJt~ su#"feiently in ads°anc~: caf desired (~n~ytrl.FC*i~:!ti a-~t~. t~~ allr~e~,r praces~ir7~ tirnc~ f~;- these perzits. Ha'~~t~ver, an ~.~a'it::~rtt rztay ~'gl::li?:~' f;_'? ~'ii l.t".v,.~tY'c'~3IItS aSSCJ~1.3t~C~ 1~.']tt. Ct)rl:,ir:.lCilt~n t}T" ~~'QLI_;:t;1i~k; ~:li Y°;.x `:i i .rat' :iTtltS Cltt ~4tJs: .`~l'fi:~illlc'~ ~e..f dCtl~L°CIC)~w`t'~ SC:I"t~~,iU~r'S t(' ~~l~f',`Sb d'Iil~ Lw.~i~i,2'1~~1 1~,`19v. tltr;i;~CICCt ~1Ci "~tir4;_[c.ti€, ~~t~~1~S, 3C~~5`+1~'i~lt'}' ~tC~t}I~e~1S, t~I" c};`tY 15Stlt;~ <'t. t~,,.;~ t'p` t`l; 1~~;~1;.:w:.,u . "Ct:il~. ~i_` "~r~E ~c~r'rlli"~G"t.`urinthC" r24'i:_f_C~lt.t1F13i t}rt~~E.®i.'~ 'CV--:?~i iIi{ii.~. ,~~.I7I:,li t~,iri t/:~er~t's '~i~natctre ate ( ~;~nt ~ ~i~nUtt:;~ :s ~Falid c~ ~r~ it~azr as.~thcsriatic~n Seder rarr~ the appliiat is p~~~°i€ied. Town of Newland North Toe River Stream Stabilization and Constructed Wetland -Existing Conditions Proposed Streambank Stabilization This is a view looking upstream on the North Toe Kiver. 1 rie beaverctam shown m the upper photograph will be removed during construction. Rock vane structures will be located to protect infrastructure, provide public access, discourage erosion, and improve instream habitat. (See the attached plan drawing] Town of Newland North Toe River Stream Stabilization and Constructed Wetland -Existing Conditions This is a view (facing south) of the eastern floodplain where the proposed Stormwater wetland will be located. This wetland was designed to treat the first flush volume of runoff from a 17-acre drainage area consisting of a portion of downtown Newland. (See the attached plan drawing) Proposed Stormwater Wetland Location ;, - : rij' / t , 1 ~ T •r F- 0 z s Z ~= z ~~,rn ¢m ' ~ u ua , a ao ~J~~ <o ~v ~3z 0 z c Q N m° z ~ Q a ~ ~~ wU Q~z W Q woo wc~ Z U1 ~~z ~ ~ ~UQ ~ ~ ~ ~~W Q~z _ Q~ ~ Wo U ~Z Z 0 z 0 arE o~ios/w aoaEEr r~o. iLEiIAA~E FllE DWG hEE~ N0. PL- t pkpunNG N0. SINGE RACK VANE ROCK CRASS VANE Cnot to scale) Cnot to scale) 1. RBCK VANES TB BE LDCAiED AS SHDVN ON THE PLANS AND AT ~ ~ lAx16U1 w0W OTHER LOCAT]!B!S AS DIRECTED BY THE ENGINEER. ~ , 2. ROCK VANE TB BE OR]ENTED UPSTREAM AT A ZD 10 30 DEGREE ANGLE xo aAPS ~~~^~ ~ y, I`: ~ " ~ BFF THE BANK ~ ~i - .. }, VANES SHALL HAVE A LENGTH THAT SPANS UP TO DIE-HALF OF THE BASE-PEON CHANNEL VITH A SLDPE BF E TD 7 PERCENT AS e ~~ - , SDRAx now ~ ~`- ' ~ p ° "~ I .~~AhN IE~iEL >' '~~ ii ~ ~ I~~ ~ ~ ~ APPROVED BY THE RESIDENT NCSU ENGINEER DUR]NG CRJSTRUCTIRJ, FLATTER RND LONGER STRUCTURES WILL BE PREFERED DURING s-'~ ~ ~,~ ~V ~ ~ -'~ ' " ^ "`" ' ~,./ i ~ i ~~q , Vnne s ans Y, - Y of F CONSTRUCTION 4. ALL VANES SHALL INCLUDE SILLS AND FILTER-FABRIC BN THE ~ ~ `` ~ ~~ ~ ~ °' ~ "~ , ~ r _, ~`"~"" ~-~~-~~ B/N6UL Fao7CA ~~ Bottom Width UPSTREAM SIDE GF THE S]LL, FILTER FABRIC SWILL BE PLACED ' ~~~~`~` ~PTx f- BN THE UPSTREAM SIDE ~ THE VANE TB MINIMRE PIPING. E7tlSfW0 51eLW BOTTCY - 5. ALL VANES SHALL HAVE A NIN. 1/2 TON PORTER RBCK PLACED AHOVE THE VANE AT THE INTERSECTION OF THE BANKFULL ELEVATIDN Slaps and Fro7m BOUDOS Wpetate Bmke 8. THE END OF EACH VANE SHALL BE TOED ]NTO THE CHANNEL BED AND COMPLETELY COVERED VITH CLASS 'A' STONE UNLESS r~ ' / IC OTHERVISE DIRECTED BY TIE RESIDENT NCSU ENGINEER ,t, o scaux Ha¢ i , ~ Banklull /Bench IG ~~ ~' ( 1 ~. d .-._~ u,, ~:;~ ~'1 ~ ~~ _/ 1... Ih w Y -/// ~ ~ ~ ~ J ~ - 27-3a' c ~ v., ROCK 38 m 48• ~~ _ ' ''~ ~~ ~~ ~, '' ~ _ //~ g~ Ic i J ~ _ ~_ ~~~_ ~~~~~~_ ~~~_ ~ _~~~~~ Elewtim \~ _~~ =~_ } J 4~ I~ ~ ~~~ _~~~ ~~~ -~~~ _~~~_~~~ _ BArrKruu NDTH w I STAEAU Flow , T~ w \~ 'Iy,~~-I awMnu xoTM i I .. ^ ~ ~ ~ `i T -~~~=~~~ ~~~ ~~~-~~~- - 1 V y~l 1~ w " _ " PLAN VIEW ROSS-SECTION BNefEUll BAIXELL M1H EXCAVATED ® I :. CAAYELS 70 PAEMiNT Eww BETY@! ai~ eWICENi f;DIE(IeE FAHeC 91/11 BE eLS1AlL ]g•_b• `~ _ qw~„ ~,,~ a, ,~ ate,,, 90E aF „~ f vANE TD ueelna Hw1c a BDIAOExs Ba1RDER5 9KNAD E RACfD so THAY TMFRE ME xo D,ws FLAShBOARD RISER DETAIL (CONTROL STRUCTURE) Flashboard Rlser (Not to Scale) Flashboard Riser Notes 1, Flashboard Riser should be Plade of AluPlinurT PROFILE VIEW -ELEVATIONS 2. Flashboard barrel PROFILE VIEW should be Joined to RCP Pi e Barrel via a 1' thick, 1' wide Riser Dlam Top of Embankment EI. = 94 ft - collar of concrete ~ Embankment Wldth = 2 ft - 3 ft i y, ~ FL. Top of Rlser = 93.5ft 1 Grade to Exlsbng if Needed Grade to Existing if Needed 1 PLAN VIEW To of Riser to Invert 1 Earth Fill p ~ Exlstln Ground g Earth Flll 1 Existing Ground ~-~ Riser Diam = 3 ft of Barrel = 3.5 ft ~I 0 ft Aluminum 2 ft RCP ~I 0 ft Aluminum 2 ft RCP Concrete Collar ~ Concrete Collar Invert of Barrel to Convey to Next Object Bottom of Riser= I ft Invert of Riser = 90 ft - 24" RCP at Speafled Distance - F~II Bottom With I ft of Concrete EL. Bottom of Riser 0 = 89 ft - P 5 llA~~ ~~~~ ~~~~ A~~ll J~~~~~ ~~~~ AT1~~`~ ~ \iEGETATIO N ZONE DETAIL o SCA ~E~ fYJTS ~CA~E~~ NTS ----- ', - B~TTDMLAFIp HAROwODD '. '~ ' FOREST ZONE BDTTDMLANp HARpwDOD BARE RDGT TREES ~HP UBS '.. '.. iYPILALLV 30' STREAM CHANIJEL FOREST ZONE . ', ', '. (PERMANENT SEEP Mlk) TIPICALL'/ 30' ' ' TOP GF BANK , BARE RooT sMRUa (PERMANENT ;EEp M]x) ~BAnKFULU ~ BANKFULL STAGE ' ' '' BARE RGDT TREE '. '. M1iga 2.J UR 6'AR ANKF MAA z,, DR ,APR I,,., 2~ TrPICAL BASEFLGw = A 3'~ '.. ''. '.. '. ELEVanoN tC$59 TNTR rA ^+aT PRMgNe N C T MdtTSML'SCC9 MIX Lp1 MANEr~Y NOTES IVO J-ROOTING ~' ' ' NT E ~25gNi C~ M(g~ R LOUR SECURELa STAPLED TG CHANWEL iGE I. HOLE MUST BE LARGE ENOUGH SO THAT J-FOOTING DOES IJOT OCCUR. - '. - ' '. 4 INSTALLATION OF BARE ROOT TP,EES AND SHRUBS BARE ROOT TREES AMID SHRUBS SHALL BE INSTALLED IN OES[GNATED AREAS ALONG THE STREAMBANK AS DIRECTED BY THE SPECIFICATIGWS, SD[L M THE AREA OF SHRUB AND TREE PLANTINGS SHALL BE LOOSENED 70 A DEPTH OF AT LEAST 5 INCHES. THIS IS 61ECESSARY OPILY GN COMPACTED SOIL. BARE POGT VEGETATION MA5 BE PLANTED !N HOLES MADE B5 A L I U E STAKE MATTOCK, -[BBLE, PLANTING BAR, OR OTHER MEANS APPROVED BY THE EIJGINEER. RONT STNCK SHALL BE PLANTED IN A ~~, ~ ~ J VERT [CAL POSITION WITH THE RGGi COLLAR APPROXIMATELY 0.5 INCHES BELOW 7HE SG[L SURFACE. THE PLANTING TREIICH DR HOLE SHALL BE DEEP AND WIDE ENOUGH TO PERMIT THE RNOTS i0 SPREAp OUT AND DOWN WITHOUT J-ROOTING, THE PLANT STEM SHALL REMAIN UPRIGHT. SD1L SHALL BE REPLACED ARDUND THE rRANSPLAINTED vEGETArmrl ANO TAMPED AROUrm THE SHRUB OR `; -5" - 2' JNSTALLATIGH OF C VE STAKES' A.) PRIOR TO ]NSiALLAiION DF LIVE STAPES, THE STREAM BANK TREE FIRMLY TG ELIMINATE AiR POCKETS ~ z~~ z`r°, SHOULD BE FERTILIZED, LIME- AND SEEDED, _ ~' ~ ~ ATER ~INALN BUD '~ BJ LNE PLANT MATEPIALS SHALL BE CUT FR(JM EXISTING NATIVE, 7 ~ v ' SCAR ~ H=1/SL NATUP.ALIZED STANDS. LIVE STAKING PLANT MATERIAL SHALL T E a - P z ~ LATERAL BU~ CONSIS A RANDOM ASSORTMENT DF MATERIALS SELECTED O ' o FPOM THE FOLLOWING- SILK I DOGWOOD CCGRIJUS AMOMUM), ~ s 4o a . ~' BARK RIDGE ~~ SILKY WILLOW CSALIK SERICEA) Ai ID ELDERAERRY (SAMBUCUS "a o o v ~ ^ ~'°E BRANS" REM°V~ ~ AT SLIGHT ANGLE ~~ ~ ,~ ~~U CANADENSISL OTHER SPECIES MAY BE SUBSTITUTED UPON APPR°~AL °` T"E ENG'NEER S E E D I ~l G AND M U C H I N ~ ~l R T E S ~>~ ~~~~ BRP.NCH COLLAR C.) MATERIALS SHOULD BE INSiALLE- THE SAME DAY AS PREPARED ~3 i " LNW SEASONAL _ ~~~ OP. STOCKPILED UP TO 2 WEEKS iN COLD STORAGE. INSTALLATION SHOULD GCCUP, -URMG THE DORMANT SEASON, i.e., LATE FALL, o WATER TABLE WINTER, [F THE GPOUND ]S NGT FROZEN, TO EARLY SPRING BEFORE s GROWTH BEGINS. 45` TAPER D.I LIVE STAKES SHOULD BE OS TO 2 INCHES DIAMETER, 2 TU 3 FEET 6CTT END lfl LEPIGTH, AFIGLED C1N THE BOTTOM AND CUT FWSH HN THE TOP, WITH BUDS ORIEPITED UPWARDS. LIVE STARES SHALL BE LIVIPIG NOTES' ~ BASED ON THE PRESENCE GE YOUNG BUDS AND GREEN BARK. 1, ALL DISTURBED AREAS SHALL BE SEEDED AND MULCHED AS o E~ STAKES SHALL aE DRIVEN INTO THE GROUrm USING A RUBBER HAMMER OR BT cPEAT,NG A HOLE AND SLIPPING THE STAKE INTO PER NCDENR DLR LAND QUALITY REQUIREMENTS LIVE STAKES IT. THE STAPES SHALL BE TAMPED IAI AT A RIGHT ANGLE TO THE SLaPE WITH Ais of THE STAKE INSTALLED sELOw THE GROUND SURFACE THE SOIL SHALL BE FIRMLY PACKED ARDUND THE HO E 2. MULCH SHOULD BE APPLIED AT THE RATE OF 1 to 2 TUNS PER Q ~ . L AFTER INSTALLATION sPnT STAKES SHALL NGT BE .^JSTALLEO. ACRE AND TACKED WITH HYDRAULICALLY APPLIED MULCH WHEN o m z STAKES THAT SPLIT DURING INSTALLATION SHALL BE REPLACED INSTALLED ~ ~ ~ ~ w , 3 TEMPORARY AND PERMANENT SEED SHALL BE APPLIED Q ~ z W ~ , ~~-~J TOGETHER. boo z ~ 4, IRRIGATION MAY BE REQUIRED AT THE DESCRETIDN OF THE N~a cn o ENGINEER, ° ~ w Q ~ NOTE,'. uVE STAKTNG 5, THE CONTRACTOR IS RESPONSIBLE TU FOLLOWING ALL RULES ~ z z w o ALL LATERAL BRANCHES SHALL BE OF THE NCDENR DLR LAND QUALITY SECTION AS OUTLINED IN THE z ° o z Rm~EE°NO°BRA°~° ~oM~aR To THE BARK EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL, A MINIMUM of Two Buus (GrIE LATERAL 6. ALL EROSION CONTROL DEVICES SHALL BE INSPECTED AT THE ° PLUS DNE TERMINAL oR Two rERMmaL; SHALL BE ABOVE THE PLANTING DEPTH. BEGINNING AND END OF EACH WORK DAY. THE CONTRACTOR AND ~ 3 LIVE ,TAKING MAV DE SUBST,TNTFD DESIGNER SHALL CONDUCT THE INSPECTION JOINTLY, FoR wlTe TeaNSPLANtS WITH THE oAT. APPRDVA~ DF THE EIJGINEER. o 3/azPm PKOJecr rvo. ~i4~~A~E Fl LE ~wG SNEEt N0. p, oaAwnNC rvc. i, SIUT FENCE DETAIU +... 6' YAk. YiT.~ MTRf .. ' ' 1C9Cak.E ASIt ~t1Fr.AR. MIRES VE a#lAlt. bF 92~°~ i7AitGE AFd#. ~ t ~ .. Y1,~ Aaa7 8(ftt SSYId~b YdbiLL BC fLT PGC 91iti, :_ NINE _ FiLiER fAR,s1C FS1:7F.A EACYt7C t1NP9~T€~ f%€.L ~ ~~ ~ d ~ I ... ~ B ~,~~ kk'tfxtat4"ad k1' t'bdNi3C A M%m.E SWtti `AE°X79.. MATTING DETAIL ~~~ ~~ IitST TO C NOTES 1. All exposed streon banks shall be Hotted iron toe of slope to top of bank. 2, Banks shall be Hatted the sane dny ns final grnded, 3, Vood stakes shall be used In plnce of wire staples. 4, 2-foot ook stakes shall be used at the toe and upstreon edge of nntting, 5, Natting type shall be equal to North Anerlcan Green C125BN, 6, No plastic netting shnll be used on this protect. u a zN= u~~ z v am c~ -U ~aN~ VUo C~NSTRUCTIDN ENTRANCE DETAIL Qo ~~~~ i~3z 0 e m i, pAOVOL. TUAINSNtI R.AUBUS SIIfFIC{ENT T:i ACC TE LAtIGE T1rU£KS. 2. LDCA"E LNTRASiGE(SB TO PNdVSOE Fq! ilTILSZATION BY ALL GiHdSTP~T2'{Yd NENTCLFS. "~. IRsST 8f kfAINTAtNEO IN A CONOTTIOH S~32CH NILl.. PRfVENT q. Af2Y d3aCf~f1AL ~tHAOKEC7 f)NTO TN€ flISAJJ7YAV #"3T Bf C~.EAAiftJ UN TMkET4tAikty, 5. L6CATf 6HAVEL CftNSTGUCTION ENTNA+dCE AT ALS. V03~tIB OF` ERdiRk.xS ANO EG,~OSS UNTIL SCTE CS STA9iL3Xf0. P#QY3DE FHE(RkENT CHECKS OF T1TE ~S"ICE ANO TIMELY 61AIH'TENANCE... 8, NIUIBER ANO LOCATION OF (XlIdSTAU~TION EPiTRAA#CfS TO 8€ 6fTEfi11IHID BY INE EhfalNffA. 7, USE CLASS 'A` ST2~IE CN? pTNEF COARSE AGUREGATE AP6RQVEp NOTE: FLAGE iILTEH fASRC BE~ATH 5Tt3NE z 0 Q N m~ z QQ ~ W ~~U ~ J W Q Q3z WU woo =ln w z N~Q ~O 0~3 J~ z~w Q~ z az ~~ Zo ~Z 0 z 3 0 oar[ 03/01/07 aeO~ECr NG FILENAME FICEOWG SHECr N0 PL- I ORANING NG. PR^PER1 B^UNDAF _ ~~ 7 !+7~1hJ tiF f=1EVJ1 F1PdL~ `TF?EP~A `:;TAF;IU~ZATI~JI`J ~r_ ~ - _ ~ ~_!-"I~TFUCTFG `~VETI P~^dD ~.IEW'L/~PdD. i~d ~._: SANITARY SEWER t ~v.__T___..__ ___ .__ _'~-_ ^UTFL^W INT^ EXISTING SWALE LIMITS ^F VIA FLASHB^ARD RISER DISTURBANCE ~ ~_ SANITARY .9 ~~~ SEWER 1~ ~~ 3 / //~;~ C^NSTRUCTI^N TRANC ^FF PHARMACY TREET .ST^RMWATER WETLAND PERMANENT P^OL ELEV. = 91 FEET '`~ T^P ^F \ '\ BANK 9~ ~- ~~ ~~~ ~O PROP^SED R^CK ~ VANE STRUCTURE y CL^CATI^NS T^ BE ~ D ELD MINED IN THE ~O 2 `D W F^REBAY LEGEND SILT FENCE ~--e_~- LINITS ~ DISTURBANCE ~ C E%ISTING !-9 7 CONTOURS ~ PROP0.SED ~ VETLAND ~ CDNTDIAtS ROCK SINGLE ~,(}~~Q V ARM VANE ROLK CROSS (~ /~ Yl X VANE y~~C~.l}lJ E%ISTING VETLAND GRADE P^RTI^NS ^ EVEE T^ ELE 93,5 FEET NUTE~ TEMPORARY STUCKPIIE AREA FUR BOULDERS SHALL BE LOCATED OUTSIDE OF THE TROUT BUFFER (AT LEAST 25-FEET FROM THE TOP OF BANK) 1\.,' . \~ TuWmd ~~ r~~wi cr~a~ _~TF~:~ JEWLAf1U. -~ n _ , - ~ ~'~Af'J -,H' 0 z \~~ 9s '1 EXISTING WETLAND CWL-1) (DELINEATED BY USACE ^N 5/9/07) F^REBAY FILL\ EXISTING DITCH