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HomeMy WebLinkAbout20051151 Ver 2_401 Application_20071126CH2MHILL November 6, 2007 Division of Water Quality 1650 Mail Service Center Raleigh, NC 27699-1650 o~-~~s-Vz CH2MHILL 4824 Parkway Plaza Boulevard Suite 200 Chadotte, NC 28217-1968 Tel 704.329.0072 Fax 704.329.0141 Subject: Follow-on work at Polk County EWP Project No. 2005-7 (DSR 7) DWQ Project Number 05-1151 USAGE Action ID No. 200532342-2343 and Nationwide Permit No. 37 (Emergency Watershed Protection and Rehabilitation) Dear Mr. Klimek: CH2M HILL is requesting approval to repair an unstable section of DSR 7 in Polk County. Work was conducted under the EWP NWP 37 and a request is being made to repair a 60-foot section of slumping rock toe and install two j-hooks to improve channel stability. Per our telephone and email communications with Liz Hair of USAGE regarding the Polk County DSR 7, CH2M HILL understands that the proposed rock toe repair work at the site may be conducted under the original Nationwide Permit No. 37 (noted in the Subject line above) until March 18, 2008. However, J-hook in-stream structures, which were not included in the original permit, are now recommended to stabilize the bank and an additional permit is being requested. Total instream work will be less than 1501inear feet. As noted in Liz Hair's email on October 30, 2007, a Nationwide Permit No. 13 for Bank Stabilization is now an appropriate permit for the proposed activities. Therefore, CH2M HILL has prepared this Nationwide Permit No. 13 on the applicant's behalf for the follow-on work at DSR 7 in Polk County. Please contact me at (704) 329-0073, extension 293 if you have any questions or need additional information. Sincerely, CH2M HILL Jaime Robinson ~~~ N~V 2 ~ 2007 Uc1Slk - WA7~k t}tigLf >-Y nFJa~.~`~a sr~i~±,v~~ ~~N Office Use Only: Form Version March OS USAGE Action ID No. DWQ No. ~S -' ~ ~ s ~ ~ Z (tt any particular item ~s not appl-cable to this project, please enter "Not Applicable" or "N/A".) I. Processing 1. Check all of the approval(s) requested for this project: ® Section 404 Permit ^ Riparian or Watershed Buffer Rules ^ Section 10 Permit ^ Isolated Wetland Permit from DWQ ® 401 Water Quality Certification ^ Express 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 13 3. 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 ~ ~" F ~~ ~~~ ~' `~~ ,°~ ~~ ~„ d' 1. Owner/Applicant Information ~~J ~1V ~ ~ ~~~~ Name:_Ryan Whitson /County Manaeer ~>r~yo"c - WA7rlt c~A~.ill° Mailing Address: 40 Courthouse Street tl`~Zt.~N[~ ~''~ .`Ttf~~!<~t~~ttlWCtt Columbus, NC 28722 Telephone Number: 828-894-3301 Fax Number: E-mail Address: 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: Jaime Robinson Company Affiliation: CH2M HILL Mailing Address: 4824 Parkway Plaza Boulevard, Suite 200 Charlotte, NC 28217 Telephone Number: 704-329-0073 ext 293 Fax Number: 704-329-0141 E-mail Address: Jaime.Robinson(a,ch2m.com Updated 11/1/2005 Page 5 of 13 III. Project Information 6 Attach a vicinity 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: White Oak Creek EWP 2005-DSR7 Maintenance Repair 2. T.LP. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): 11646 4. Location County: Polk Nearest Town: Columbus Subdivision name (include phase/lot number): NA Directions to site (include road numbers/names, landmarks, etc.): From Columbus, NC travel east on US-74 exit south onto NC-9. Follow NC-9 approximately 3 miles and turn left (east) onto Sandy Plains Rd Follow Sandy Plains Rd for approximately 3 miles to Meadow Crest Rd The project site is downstream of Sandy Plains Rd bridge over White Oak Creek, at the intersection of Sandy Plains Rd and Meadow Crest Rd. The repair site is accessible through a private ravel driveway off Meadow Crest Rd. 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): 35.267500 °N 82.046944 °W Property size (acres): 27.4 7. Name of nearest receiving body of water: White Oak Creek 8. River Basin: Broad (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 proposed site consists of light residential and agricultural Updated 11/1/2005 Page 6 of 13 uses. The stream and stream banks were heavily impacted during Tropical Storms Frances and Ivan. The severely eroded right bank was stabilized in 2005 by constructing 300 linear feet of rock toe. A portion of the rock toe constructed durinP the 2005 repairs has slumped leaving the right bank potentially unstable and unprotected. 10. Describe the overall project in detail, including the type of equipment to be used: This project area includes approximately 150 linear feet of the right bank of White Oak Creek The proiect area is located 35.267500°N 82.046944°W. The previously installed bank stabilization structures have been undermined by the additional stresses on the ri ht bank resultine from amid-channel sandbar which has formed after the 2005 construction Attachment 1 contains representative photos of the project area Repairs in this reach of stream will involve the following• Repair the previously installed organic and rock structures (place a row of additional rock on top of the slumped rockl Install two in-stream structures (i-hooks to provide additional protection from the stresses on the right bank Banks will be planted with native grasses and woody ve etation. Equipment that may be used to accomplish the above listed tasks includes; rubber tired skidders 15 ton dump truck and a hydraulic track mounted excavator with thumb. 1 1. Explain the purpose of the proposed work: Under the guidelines of EWP, a Nationwide Permit No. 37 was issued in 2005 for 500 linear feet of stream bank repair Since that time a portion of the bank stabilization has become unstable. The follow-on work addressed in this application is to fix the portion of unstable bank b~epairing the rock toe bank and installing two in-stream structures. 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. See attached previously issued permit which was part of a EmergencX Watershed Program repair project. The project included bank stabilization on an outer bend and a rock toe was approved at the site. The bank was also graded to be stable 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. Updated 11/1/2005 Page 7 of 13 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. 1. Provide a written description of the proposed impacts: Proposed impacts include limited streambed disturbances and streambank stabilization. 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, cPnarately lict impacts dne to hnth structure and flnnding. Wetland Impact Site Number (indicate on map) Type of Impact Type of Wetland (e.g., forested, marsh, herbaceous, bog, etc.) Located within 100-year Floodplain es/no Distance to Nearest Stream linear feet Area of Impact (acres) Total Wetland Impact (acres) 3. List the total acreage (estimated) of all existing wetlands on the property: None 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 meet hP inrhvlarl Tn ~alrnlate acreage mnltinly lenuth X width- then divide by 43.560. Stream Impact Perennial or Average Impact Area of Number Stream Name Type of Impact Intermittent? Stream Width Length Impact indicate on ma Before Im act linear feet acres EWP 2005-7 White Oak Creek Streambank stabilization perennial 30 150 0.1 Total Stream Impact (by length and acreage) 150 0.1 Updated 11/1/2005 Page 8 of 13 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 in , floodin ,drama e, bulkheads, etc. Open Water Impact Site Number indicate on ma Name of Waterbody (if applicable) Type of Impact Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc. Area of Impact acres Total Open Water Impact (acres) 6. List the cumulative im act to all Waters of the U.S. resultin from the ro'ect: Stream Im act (acres): 0.1 Wetland Im act (acres O en Water Im act acres Total Im act to Waters of the U.S. (acres) 0.1 Total Stream Im act linear feet : 150 7. Isolated Waters Do any isolated waters exist on the property? ^ Yes ®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. 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.): NA Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): NA Current land use in the vicinity of the pond: NA Size of watershed draining to pond: NA Expected pond surface area: NA 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. When at all possible equipment Updated 11/1/2005 Page 9 of 13 will be kept out of the stream channel and stream crossings will be minimized. When at all possible stream material will be moved from dry areas to banks, minimizing the movement of wet (or below water line) stream material. Creating wide, shallow channels will be avoided. Temporary and/or permanent herbaceous vegetation shall be planted on all bare soil within 15 days of~round disturbing; activities. Rocky material shall not be used for bank stabilization above the normal high water mark. 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 (see DWQ website for most current version.). 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. Updated I I/1/2005 Page 10 of 13 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://www.nceep.net/pales/inlieureplace.htm. If use of the NCEEP is proposed, please check the appropriate box on page five and provide the following information: Amount of stream mitigation requested (linear feet): NA Amount of buffer mitigation requested (square feet): NA Amount of Riparian wetland mitigation requested (acres): NA Amount ofNon-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA 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 ^ No ®(original project did, this phase does not use public funds or land) 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 ^ 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. 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 Updated 11/1/2005 Page 11 of 13 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 1 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 additional 20 feet from the edge of Zone 1. 3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Riparian Buffer Restoration /Enhancement, or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0244, or .0260. XI. Stormwater (required by DWQ) Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss Stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. If percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed impervious level. Imperviousness will not chance. Erosion and sedimentation prevention and control will be maintained throughout this project primaril tY hrough_proper water management, construction sequencing, proper staging and stockpiling of materials, and the maintenance, at all times, of suitable channel capaci for expected flow events. Equipment, fuels, lubricants, or other potential sources of water pollution will not be stored in areas that could be flooded during this XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. Portable facilities shall be provided at the work site XIII. Violations (required by DWQ) Updated 11/1/?005 Page 12 of 13 Is this site in violation. of DWQ Wetland Rules {l~A NCAC 2H .0500) or any Buffer Rules? Yes ^ No Is this an after-the-fact permit application? Yes ^ No XIV. Cumulative Impacts {required by DWQ) Will this project {based on past and reasonably anticipated future impacts) result in additional development, which could impact nearby downstream. water quality? Yes ^ No ^ If yes, please submit a qualitative or Quantitative cumulative impact analysis in accordance with the most recent North Carolina Division of Water Quality poficy posted on our website at http://h~o.enr.state.ne.us/ncwetlands. If no, please provide a short narrative description: XV. Other Circumstances (Optional): It is the. applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules {e.g., draw-down schedules far lakes, dates associated with Endangered and "Threatened Species, accessibility problems, or other issues outside of the applicant's control). ~Q~ ~ ~~ ~o-«-o ~ Applicant/Agent's Signature llate (Agent's signature is valid only if an authorization letter from the applicant is provided.) 11pa;~te~i i inrzoo> Pale 13 of 13 0 1,250 2,500 5,000 Feet Attachment 1a CH2MHILL ~ ~ ~ ~ ~ ~ ~ ~ ~ DSR 7 -White Oak Stream ~ Polk County, NC ,.~ ~ ~ _ ~ ` `, ~ ~,~ Prince -Vicinity Map Y V co ~ Z ~ V C v Y V ~ ~ Y d a° ~ c ~ a` i ti 0 J J I N Z v 11 USDA -Natural Resource Conservation Service Emergency Watershed Protection Program -Stream Repair Attachment 1c • BEFORE AND AFTER STREAM REPAIR PHOTOS Polk County, North Carolina Richard 8 Pi a Prince -White Oak C reek CH2M HILL -~ 1 5~y, ' \: a M y~~ r~F ~~ 3 ~,_ . '~_ , ~~ ' • ~ •Y r i-.r .~c 01 17 USDA -Natural Resource Conservation Service Emergency Watershed Protection Program -Stream Repair Attachment 1 c -BEFORE AND AFTER STREAM REPAIR PHOTOS Polk County, North Carolina Richard 8 Pia Prince -White Oak Creek CH2M HILL R .~ r ~ - -~ t r ~ ,~. ~ I ~ ti=. t •~ ~ . ~+ ~ } '~' yy Y! s ~ r, 4 ~, 1~~- , ~ p` .p X ~" , ~ ` 'y .> -~l ~' r '.lyY ~ ~'~` ~ '~ ~~ . ~ ra +ty.~ ~ ~ ~~. r- ~; .• x * . _.. _ ~°`"` j 4. Yf, ~ g ~y am: ~` s~ c,.;ti, ~~" ~ 5 ~w 1 .<r~,~ h ,,~~`' . ~. 2007 10 30 , qq l~ ~ ~ ti'4t ie.... t - 'L ~. 46 ~~-n~s ~ :yi himney Rock Village Legend ~ DSR Project Site Interstate Highway Major Roads eQ Major Hydrography %e~ Subwatershed Municipality County Boundary erfor o SR7 °~o s +( ~a 1 ~iL~r pacoletR~ r ~or!h DSR7 Drainage Area 37.7 sq miles ryon Attachment 1 e o ~ 2 4 Miles DSR 7 -White Oak Creek CH2MHILL N I I I Polk County, NC Prince -Drainage Area Map ACCESS AGREEMENT This Access Agreement is made between Polk County and: Pronertv Owner: Richard & Pia Prince Street Address: 29 Meadow Crest Rd. _ Tryon, N. C. 28782 _ Polk County is requesting access to the property for the purpose of assessing and repairing damage to the streambank, stream channel, and floodplain that was caused by hurricanes Frances and Ivan. The repair efforts are being funded by the United States Natural Resource Conservation Service through the emergency watershed protection (EWP) program. The repair work will include some or all of the following elements: • Streambank Stabilization Re-vegetation • Channel relocation to PrcOFlood Location Debris Removal Polk County and the Property Owner agree: 1. Property owner grants permission to Polk County and its contracts and agents to enter upon their land for the purpose of assessing and repairing the flood damage caused by Hurricanes Frances and Ivan. Additionally, this agreement includes the right of ingress and egress on the land for the purpose of maintaining the emergency works for the period of one year from the date of completion. 2. Property owner grants permission to Polk County and its contractors and agent to conduct stream stabilization measures, which may include debris removal, stream bank stabilization using rocks, wood, and/or, mulching and seeding, and/or channel relocation. 3. Polk County agrees to comply with local, state, and federal laws applicable to the work, and further agrees to exercise due care and caution in the performance of all work on the Property. 4. This Agreement constitutes the entire understanding between the parties. All prior agreements or understandings, whether oral or written, are superseded. This Agreement may be amended only by a written. document duly executed by the parties. 5. Emergency Watershed Protection measures are intended to repair t7ood damage to the stream and to return affected areas to pre-flood conditions. Repair and/or improvements to structures are not part of this EWP project. Damaged bridges, driveways, and eroded fields are not addressed by EWP measures. Polk County and its contractors will strive to minimize impacts to adjacent properties. However, some impact may be unavoidable. The Property owner releases Polk County and its contractors from liability for any damage incurred as result of this work. 6. This agreement does not provide confirmation that the subject site is eligible for Emergency Funds, nor does it encumber funds for any repair work at this site. 7. Property owner agrees not to remove or modify construction repairs, including vegetation, for one year from the date of completion. Polk Cpounty or Representative Date: /(~~] -C'l Property O % .~ By. Date:_ 1 D ~~3 ~2~a7 Polk Co. ,White Oak Creek, DSR 7 Design Parameters Apply to Site Figure Title 1 BANK STABILIZATION TYPICAL SECTION 2 BANK STABILIZATION WITH ROCK TOE TYPICAL SECTION 3 STREAM CHANNEL BENCH TYPICAL SECTION X 4 TYPICAL J HOOK DETAIL 5 TYPICAL CROSS VANE DETAIL X 6 SUGGESTED VEGETATION LIST X 7 STABILIZATION PLANTING PLAN X 8 BENCH PLANTING PLAN X 9 LIVE STAKE DETAIL X 10 DEAD STOUT STAKE DETAIL X 11 EC FABRIC INSTALLATION DETAIL X 12 EC FABRIC ANCHOR DETAIL X 13 STABILIZATION CONSTRUCTION ENTRANCE DETAIL X 14 TEMPORARY SILT FENCE DETAIL 15 TEMPORARY STREAM CROSSING DETAIL X 16 LAND QUALITY STOCK PILE LAYOUT 17 LAND QUALITY STREAM CROSSING LAYOUT 18 LAND QUALITY DEBRIS REMOVAL LAYOUT Notes and/or Measurements See Note below. EC fabric = 4.5 Ib/ftZ Note: Refer to the attached plan view site sketch for the placement of two (2) rock J-hook structures. On Figure 4, the dimesion "W' is approximately 52 feet and bankfull depth is approximately 4.5 feet. Exact dimensions of the J-hook structures may vary somewhat to account for variable field conditions during installation. Stationing for both the upstream end of the J-hooks and the sills have been called- out on the site sketch. The most upstream J-hook should be installed first, paying particular attention to the location of the upstream end at STA 1+67 as measured on 01/17/07. As shown in Figure 4, the departure angle of the J-hook arm from the bank should not exceed 20 degrees. CN2MHIL ~f~~~~t~~dk~m~ ~DS~ `1-`~~i~nc~ V~h~fi~.D~k.G~k ~~~~ ~t. ~ ~..~r DC~t~er3©,ZDb~~. :, ~ ~~ ~oW ~~ ~-~~ e ~ ~~~. (~S'~°' PRELIMINARY NOT FOR CONSTRUCTION ~1 t of I~aDc~ VlO,~O~ian ~s Sk~cln~d ~ mn I~(3v~2sp`I ~~ SO.r~`~o,n~P~ar t~a~s: ~. skekl~ B~X~I ~ ~;e~ I~eaSilrern2+ds ova San~o.r~+ ~~ ~ 2ot~? o.~d Oc~ab~r 3D~v.~D~. 2, Skrt-~~. Ns~ ~-~ 5 ~ . 3'~Z'~~ 8ark ~u{-o#~ioniv~ k~S~, m~ a 30~ ~~ el,~~~., -t~~ lo.i d ~rn}u~rw1¢ l 3 L~ ~, ~e ~ Way. ~ ¢. S-~a~iv~n 0 a~ downs~m ed.~e ~ ruo~- d~wn~rec~m rock af~o~ ~~}ve. ~A ~ ~F w oar \ a~ sket~d c~ Id~3o~j~ ~~~ 5``~ 1~ ~~ i .. ~~~„~' a. s ~ Nooks ~~os~~ ~----i o ,-~~ y/ ~i iv ~ I sl ~ Ce~-r' o ~ '~°°' ~ ~~ Y/ ~ Sao-~~x ~ ,~ \~~ ~oc~ toe. J~~M~~ ~5~~ `~oX~~~tio-~ r CJ~ V. ~~- SSA Iz5 rox. (~5 ~F stR q5 ~ P~ -~~~a~r- oS- i~si vz CROSS SECTION VIEW BOULDER FLOW G DIRECTION << 82~~ ~h y~ BOULDERS ~~ ~ GAPS (1/4-1/3 ROCK DIA.) ~\\~~~\~/~) 1 \)~O~ Z~ W BANKFULL ELEVATION SCOUR FOOTER ~ CHANNEL BED NOTES: PROFILE VIEW 1. BOULDER SIZE IS 4' MINIMUM OR AS SPECIFIED ON PLANS. 2. WRAP FILTER FABRIC AROUND FOOTER STONES AND BACKFILL WITH TYPE 3 RIPRAP OR EQUIVALENT (ON SITE COBBLE WHEN AVAILABLE). DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 PLAN VIEW /I I SOURCE: APPLIED ECOLOGICAL SERVICES, INC TITLE FIGURE TYPICAL J HOOK DETAIL 4 NOT TO SCALE .Mountain Region Sugg ested Vegetation List I ( ii TREES S P F SMALL TREES/SHRUBS S P F HERBACEOUS VEGETATION FOR SEED MIX Betula lento cherry birch x x Alnus serrulata tag alder x x x Arisaema triphyllum jack-in-the-pulpit Scirpus validus soft stem bulrush Betula nigra river birch x x Amelanchierarborea serviceberry x x Asclepias incarnata swamp milkweed Sparganium americanum bur-reed Carya cordiformis bitternut hickory x x x Aronia arbutifolia red chokeberry x x Carex crinata fringed sedge Thelypteris palustris marsh fern Carya ovata shagbark hickory x x x Asimina triloba common pawpaw x x Carex intumescens bladder sedge Uniola latifolia river oats Diospyros virginiana persimmon x x x Calycanthus floridus sweet-shrub x x Carex lupulina hop sedge Vernonia noveboracensi: ironweed Fraxinus pennsylvanica green ash x x Carpinus caroliniana ironwood x x Carex lurida lurid sedge Leersia oryzoides rice cutgrass Halesia caroliniana silverbell x x Cornus alternifolia alternate leaf dogwood x x Carex scoparia broom sedge Lobelia cardinalis cardinal flower Nyssa sylvatica blackgum x x x Cornus amomum silky dogwood x x Carex stricta tussock sedge Lobelia siphilitica great blue lobelia Platanus occidentalis sycamore x x Corylus americans hazel- nut x x Carex vulpinoidea fox sedge Ludwigia alternifolia bushy seedbox Prunus serotina black cherry x x x Ham amelis virginiana witch-hazel x x Chelone glabra turtlehead Panicum virgatum switchgrass Salix nigra black willow x x Ilex verticillata winter berry x x x Cyperus strigosus umbrella sedge Polygonum sagittatum tearthumb Tilia heterophylla white basswood x x Leucothoe axillaris doghobble x Elymus hystrix bottlebrush grass Scirpus atrovirens green bulrush Lindera benzoin Eupatorium fistulosum Scirpus cyperinus S =Shade spicebush x Joe-pye-weed woolgrass P =Partial Sun F = Fulf Sun Lyonia ligustrina Lyonia ligustrina x Eupatorium perfoliatum bones et Juncus effusus soft rush Magnolia tripetala x Impatiens capensis _ umbrella tree jewel-weed --i f ~ Physocarpus opulifolius ninebark x x x ~ __._ ._ Rhododendron periclymenoides wild azalea x x __ ..... Rhododendron viscosum I r _ swamp azalea x x _. -. Rosa palustris !-- swamp rose x x [ _ Salix sericea silky willow x x !- Spires latifolia meadowsweet x I Symplocos tinctoria ~ -, -~_. ----- -._. _r_ sweet leaf x x ~- j Viburnum cassinoides ~ _ _ _~-~__ -- W ithe-rod x x x Xanthorhiza simplicissima i - _. _. yellow-root x - ': _ I ~ I { __ - - ~ G ` __ _ i --- ~ ~ - -_- I _-- i---- _ __._ i ~ ~ I ~ I I i I I_ ! f TITLE SUGGESTED VEGETATION LIST DRAWN: GMH DRAOE:MANAGER: 52 05 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 FIGURE /1 1\~J1 APPRO%. WIDTH OF CHANNEL 3' LIVE 5T 4KE ZONE TO EDGE OF WATER PLANTING WIDTH WILL VARY TO LANDOWNER LONPLIANCE ANp PROJECT SPECIFICATIONS. EXISTING SURFA ELEVATI ZONE I ZONE 2 SYMBOL HERBACEOUS SEEDING DESCRIPTION SYMBOL WOODY VEGETATION DESCRIPTION NATIVE TREE AND SHRUB SPECIES TO BE PLANTED A' -TO BE SEEDED IMMEDIATELY WITH TEMPORARY RYE GRASS A DENSITY OF 436 TREES/ACRE, WHICH IS AT IS LBS/ACRE SEEDING RATE. SUFFICIENT TO PROVIDE 320 TREES/ACRE -FOLLOWING CONSTRUCTION, AREA TO BE SEEDED WITH A NATIVE PERMANENT A / AT MATURITY. FOLLOW NCDWO GUIDELINES FOR RIPARIAN BUFFER RESTORATION , GR SS HERB MIXTURE AT 15-20 LBS/ACRE SEEDING RATE . -SHRUB SPECIES INCLUDE BUT ARE NOT LIMITED T0: . -HERB/GRASS SPECIES INCLUDE BUT ARE NOT IMI Alnus serrafula, Cepha/anthus occidenta/is, L TED T0: Agrosfis a/ba Carex spp Dactylis lomerata Cornus stricta, Rhododendron maximum, salix , ., g , Panicum spp., Pennisetum glaucum, Secale cerea/e serecia, Sambucus canadensis, etc. , ETC. -TREE SPECIES INCLUDE BUT ARE NOT LIMITED TO: LIVE STAKES TO INCLUDE CO/nUS spp, and Acerspp., Betula spp., Fraxlnus spp., Juglands Salix serica Nigra, Liriodendron Tulipifera., Pinus sfrobus., LIVE STAKES SPACED ON 2' CENTERS Platanus occidentalis., Robinia Pseudoacacia., etc. -TO BE SEEDED IMMEDIATELY WITH TEMPORARY RYE GRASS. -FOLLOWING CONSTRUCTION, AREA TO BE SEEDED WITH A NATIVE, PERMANENT GRASS/HERB MIXTURE AT IS-20 LBS/ACRE SEEDING RATE. AT LEAST 3 SPECIES OF TREES 4ND 5 SPECIES OF SHRUBS SHOULD BE USED. w NDTFS' -TREE/SHRUB/GRASS SPECIES LISTED ARE SUBJECT TO CHANGE DUE TO AVAILABILITY FROM LOCAL NURSERIES AND FORESTRY SUPPLY STATIONS. SUBSTITUTION MUST BE APPROVED BY ENGINEER. SOURCE: ALTAMONT ENVIRONMENTAL, INC. DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 O\ EXISTING STREAMBED TITLE ~ FIGURE STABILIZATION PLANTING PLAN 7 APPRO%. WIDTH OF CH 4NNEL 3 LIVE GT4KE ZONE TO EDGE OF WATER PLANTING WIDTH WILL VARY TO LANDOWNER COMPLIANCE ANO PROJECT SPECIFICATIONS. ZONE I ZONE 2 SYMBOL HERBACEOUS SEEDING DESCRIPTION SYMBOL WOODY VEGETATION DESCRIPTION NATIVE TREE AND SHRUB SPECIES TO BE PLANTED AT -TO BE SEEDED IMMEDIATELY WITH TEMPORARY RYE GRASS A DENSITY OF 436 TREES/ACRE, WHICH IS AT 15 LBS/ACRE SEEDING RATE. SUFFICIENT TO PROVIDE 320 TREES/ACRE -FOLLOWING CONSTRUCTION, AREA TO BE SEEDED WITH A NATIVE, PERMANENT GRASS/HERB MIXTURE AT AT MATURITY. FOLLOW NCDWO GUIDELINES FOR RIPARIAN BUFFER RESTORATION. IS-20 LBS/ACRE SEEDING RATE. ~ -SHRUB SPECIES INCLUDE BUT ARE NOT LIMITED T0: -HERB/GRASS SPECIES INCLUDE BUT ARE NOT LIMITED TO: AlnusSerratula, Cephalanthusoccidentalis, Agrostis a/ba, Carex spp., Dactylis glomerata, Cornus stricta, Rhododendron maximum, salix Panicum spp., Pennisetum glaucum, Secale cerea/e, serecia, Sambucus canadensis, etc. -TREE SPECIES INCLUDE BUT ARE NOT LIMITED T0: ETC. LIVE STAKES TO INCLUDE Cornus spp. and Acerspp., Betula spp., Fraxinus spp., Juglands Nigra, Liriodendron Tulipifera., Pinus strobus., Salix serica P/atanus occidenta/is., Robinia Pseudoacacia., etc. LIVE STAKES SPACED ON 2' CENTERS -TO BE SEEDED IMMEDIATELY WITH TEMPORARY RYE GRASS. -FOLLOWING CONSTRUCTION, AREA TO BE SEEDED WITH A NATIVE, PERMANENT GRASS/HERB MIXTURE AT 15-20 LBS/ACRE SEEDING RATE. AT LEAST 3 SPECIES OF TREES AND 5 SPECIES OF S HRUBS SHOULD BE USED. "NOTES: -TREE/SHRUB/GRASS SPECIES LISTED ARE SUBJECT TO CHANGE DUE TO AVAILABILITY FROM LOCAL NURSERIES AND FORESTRY SUPPLY STATIONS. - PLANT ZONE I TO EDGE OF WATER - SUBTITUTION MUST BE APPROVED BY ENGINEER SOURCE: ALTAMONT ENVIRONMENTAL, INC. DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 TITLE BENCH PLANTING PLAN SEFLOW EXISTING STREAMBED FIGURE 8 EC FABRIC 2' MAX SPACING ESTABLISHED PLANT SHOWN FOR INFORMATION ONLY o Pow }` ~ ~~ O 0 ~ GROUND 30" LIVE CUTTING (DORMANT) - TYP DEAD STOUT STAKE TYP, SEE FIGURE 10 NOTE: INSTALL LIVE STAKE SO 2/3 LENGTH IS (MIN. 20") BELOW GROUND DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/ 2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 NTS TITLE LIVE STAKE DETAIL FIGURE 9 3.5" NOTES 18" STANDARD (30" IF USED AT TOE OF SLOPE) 1. DEAD STOUT STAKES SHALL BE FASHIONED FROM UNTREATED 2" BY 4" (NOMINAL) BOARDS. 2. DEAD STOUT STAKES TO BE USED IN LIEU OF METAL OR OTHER STAPLES OR FASTENERS FOR SECURING EC FABRIC IN PLACE. 3. THE CONTRACTOR MAY USE "ECO-STAKE" 12" LENGTH OR APPROVED EQUAL IN LIEU OF DEAD STOUT STAKES FOR INSTALLATION IN THE CENTER OF THE EC FABRIC "FIELD". 4. INSTALL EC FABRIC PER MANUFACTURER'S INSTRUCTIONS. --{ ~ 1 /8"-1 /4" DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 TITLE FIGURE CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 DEAD STOUT STAKE DETAIL NTS 10 SOIL BIOENGINEERING DEAD STOU TIE TO TYPICAL SECTION NOTES: 1. INSTALL ON ALL CUT AND FILL SLOPES AND NEAR BANK DISTURBED AREAS. 2. INSTALL PER MANUFACTURER'S INSTRUCTIONS. 3. EC FABRIC SHALL BE WOVEN COIR MAT WITH 50% OPEN AREA (max.), 0.5 INCH MAX. OPENING SIZE, 4.5 Ibs/sq. ft. MAX. SHEER STRESS, 10 fps MIN. VELOCITY. DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 OF BANK ANCHOR, TVP SEE FIGURE 12 TITLE JND, TYP ~P. EC FABRIC INSTALLATION DETAIL NTS FIGURE 11 F:\CAD\NRCS\Cad-Details\Fig11.dwg, 05/12/2005 03:52:00 PM, PDF995 (temporary).pc3 TOP OF BANK EC FABRIC BASE FLOW DEAD STOUT STAKE SEE FIGURE 10 BACKFILL MAT WRAPS OVER TOP OF STAKE @ TOE TOP OF BANK ANCHOR TOE OF BANK ANCHOR NOTES: 1. CLEAN SOIL BACKFILL SHALL 8E USED TO SECURE DEAD STOUT STAKES AND FABRIC INTO THE SOIL. 2. FOR TOE OF SLOPE APPLICATIONS, FABRIC SHALL BE INSTALLED AS TO OVERLAP TRENCH & DEAD STOUT STAKE TO POSITION THE FABRIC FOR INSTALLATION UP THE BANKS. 3. START INSTALLATION OF EC FABRIC AT TOE OF SLOPE. WRAP FABRIC OVER TOE OF BANK ANCHOR AND PROCEED UP THE BANK TO THE TOP OF BANK ANCHOR. 4. FOR END OF GRADING APPLICATIONS, FABRIC SHALL BE INSTALLED PERPENDICULAR TO BANK AND ANCHORED PER TOP OF BANK DETAIL, WITH THE EXCEPTION THAT FABRIC DOES NOT EXTEND OUTSIDE OF TRENCH & FABRIC IS NOT EXPOSED. DRAWN: GMH TITLE FIGURE PROJ. MANAGER: JMO DATE: 5/2005 EC FABRIC ANCHOR CH2MHILL DETAIL 12 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 NTS 50' MIN. PUBLIC STREET „ ~ v v v v o 0 0 // EXISTING GROUND ij ~ ? / \~ /~ v?%? ~ `\ SOIL STABILIZATION FABRIC UNDER 2"3" WASHED STONE 50' MIN.' 0 0 0 0 C' X 0 0 0 O~ J O O 0 0 0 O O O r n 0 0 H- w ' OR AS SPECIFIED ? ~ r ~ ~ ON PLAN SHEETS ~ O ~ O ~ O~ ,'O ~ O U O ~ C ~ J m ~ ~ d NOTES: 1. A STABILIZED ENTRANCE PAD OF 2" - 3" WASHED STONE OR RAILROAD BALLAST SHALL BE LOCATED WHERE TRAFFIC WILL ENTER OR LEAVE THE CONSTRUCTION SITE ONTO A PUBLIC STREET, 2. FILTER FABRIC OR COMPACTED CRUSHER RUN STONE MAY BE USED AS A BASE FOR THE CONSTRUCTION ENTRANCE. 3. THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC STREETS OR EXISTING PAVEMENT. THIS MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL STONE AS CONDITIONS WARRANT AND REPAIR OR CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT. 4. ANY SEDIMENT SPILLED, DROPPED, WASHED OR TRACKED ONTO PUBLIC STREETS MUST BE REMOVED IMMEDIATELY. 5. WHEN APPROPRIATE, WHEELS MUST BE CLEANED TO REMOVE SEDIMENT PRIOR TO ENTERING A PUBLIC STREET. WHEN WASHING IS REQUIRED, IT SHALL BE DONE IN AN AREA STABILIZED WITH CRUSHED STONE. DRAWN: GMH TITLE FIGURE PROJ. MANAGER: JMO DATE: 5/2005 STABILIZED CONSTRUCTION CH2MHILL ENTRANCE DETAIL 4824 PARKWAY PLAZA BOULEVARD 13 SUITE 200 CHARLOTTE NC 28217 , N.T.S. A B - 8" MAX. STEEL POST WIRE FENCING -, ~~ - STEEL POST WIRE FENCING Z FILTER FABRIC ~ ~ W V J ~ O ~ m WOVEN FILTER FAf A B ~..._ 6.. EY~~. I~ ANCHOR SKIRT 6" MINIMUM IN LIEU OF BURYING SKIRT, 6" OF ~5 WASHED STONE MAY BE USED OVER TURNDOWN. SEE SECTION B-B. SECTION A-A STEEL POST WIRE FENCING z FILTER FABRIC 0 w v ~5 WASHED STONE Q~ LL a I Z~o GENERAL NOTES: 1. FILTER FABRIC FENCE SHALL BE A MINIMUM OF 32" IN WIDTH AND T SHALL HAVE A MINIMUM OF 6 LINE WIRES WITH 12" STAY SPACING. MAINTENANCE NOTES: 2. WOVEN FILTER FABRIC BE USED WHERE SILT FENCE IS TO REMAIN 1. FILTER BARRIERS SHALL BE INSPECTED BY THE FINANCIALLY ANCHOR SKIRT FOR A PERIOD OF MORE THAN 14 DAYS. RESPONSIBLE PARTY OR HIS AGENT IMMEDIATELY AFTER EACH 6" MINIMUM 3 STEEL POSTS SHALL BE 5'-O° IN HEIGHT AND BE OF THE RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. . SELF-FASTENER ANGLE STEEL TYPE. ANY REPAIRS NEEDED SHALL BE MADE IMMEDIATELY. 2. SHOULD THE FABRIC DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE END SECTION B-B 4. WIRE FENCING SHALL BE AT LEAST x/10 GAGE WITH A MINIMUM OF OF THE EXPECTED USABLE LIFE AND THE BARRIER STILL IS NECESSARY, THE 6 LINE WIRES WITH 12" STAY SPACING. FABRIC SHALL BE REPLACED PROMPTLY. 5. TURN SILT FENCE UP SLOPE AT ENDS. 3. SEDIMENT DEPOSITS SHOULD BE REMOVED WHEN DEPOSITS REACH APPROX. HALF THE HEIGHT OF THE BARRIER. ANY SEDIMENT DEPOSITS REMAINING IN 6. WIRE MESH SHALL BE MIN. 13 GAGE WITH MAXIMUM 12" OPENINGS. PLACE AFTER THE SILT FENCE IS REMOVED SHALL BE DRESSED TO CONFORM 7. WIRE AND WASHED STONE WILL BE REQUIRED WHEN: TO THE EXISTING GRADE, PREPARED AND SEEDED. AT TOE OF SLOPES GREATER THAN 10 FEET VERTICAL (2:1 SLOPE) 4. REMOVE SILT FENCE 1 YEAR PAST CONSTRUCTION. DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 N.T.S. TITLE TEMPORARY SILT FENCE DETAIL 14 FIGURE ~SWEDTLER® No. 937 811 E~ Engineer's Computation Pad /<aao~ soy 1 ~ t r ' ~ l W~ % ~~ ..._ _ -- r Stab/~ seG! COr-Sfr.,G~i vn n f~n~~. ~ 5 ~o~I4~.`/e. ~~ L oacf'^:1 ~rec~ i Co~s3r~y~ Lv''a~cr'' ~ars as r1e~e.ss4~7 ~`o ol~Le~~ /'a no~ "r'."b w- IrONI r•oa% Seg ~ro y. G~e 5~G~i ~i Zep/ G) cGe.S S fY~d a~ . SJ~'~"8a~''1 . SPG ~-G^~~OO.-~w.-y ,5'7~rG~y•+7 cr"oss.~~~ de ~«,`l. ~~.5 ~ YG S f tea. »z ~74n'IG^ G~+of Qa T'~' Pr- R.~a/ C o .d,~~e re.a, a v.v ~. wa ~ ~ f/ ~~ ~ s@p~i~»aq~' ~ ~ M ~ i Stub;l.~~ea! i~~.r,ol '' a S' /3ti f~a.-. - _ .. kiM/o Into St_sp.•, .r -..-......- ~ - _. - -- - - - - _. -- - To~ e ~' ~~ ma~y{-- '7r ~- ~ S~rEa.r, '- - - - - -. - - - - - - - - -....~ _.... __ .r .. ~. .._..... - - --- - - .r _ ....~ ._ .._ .- ..._. ..... ~ ..... ._... ~ .r ~a ~' t O SG~~G Source: NC Land Quality Section Figure 16 ~/~.rf~r 01 - ~ IS - V~ DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS 151 PATTON A~NUE ROOM 208 ASHEVILLE, NORTH CAROLINA 28801-5006 July 25, 2005 Regulatory Division Action ID No. 200532342-2343 and Nationwide Permit No. 37 (Emergency Watershed Protection and Rehabilitation); EWP Project No. 2005-7,8 Mr. Michael Talbert Polls County Manager 40 Courthouse Street Columbus, North Carolina 28722 Dear Mr. Talbert: Reference the application dated June 16, 2005, prepared by your representative, CH2M HILL, on behalf of Richard & Pia Prince and Vista Developers for Department of the Army (DA) authorization to perform exigency streambank stabilization work on White Oak Creek, Polk County, North Carolina. Specifically, you are proposing to remove gravel bars, stabilize eroded eroded stream banks, remove vegetative debris, and restore stream channels to their locations that existed prior to September 16, 2004 and flooding from hurricanes Francis and Ivan. These projects have been coordinated with the US Fish and Wildlife Service and the NC Wildlife Resources Commission. For the purposes of the Corps of Engineers' Regulatory Program, the "January 15, 2002 Federal Register, Final Notice of Issuance, Reissuance, and Modification of Nationwide Permits (67 FR 2020 to 2095)" listed nationwide permits. Authorization, pursuant to Section 10 of the Rivers and Harbors Act of i 899 and Section 404 of the Clean Water Act, was provided by Nationwide Permit #37 for work done by or funded by the Natural Resources Conservation Service (MRCS) qualifying as an "exigency" situation (requiring immediate action) under its Emergency Watershed Protection Program (7 CFR, Part 624), work done or funded by the U.S. Forest Service (USFS) under its Burned-Area. Emergency Rehabilitation Handbook (FSH 509.13}, and/or the Department of the Interior for Wildland Fire Management Burned Area Emergency Stabilization and Rehabilitation Handbook (DOI provided the District Engineer (DE) is notified in accordance with the "Notification" general condition. Your work is authorized by this nationwide permit provided it is accomplished in strict accordance with the enclosed general conditions, the attached special conditions, the conditions provided in the attached letter from the North Carolina Wildlife Resources Commission dated July 23, 2005 (with the exception of condition #9), your submitted plans, and provided you receive a Section 401 water quality certification from the North Carolina Division of Water Quality (NCDWQ). You should contact Mr. Kevin Barnett, telephone (828) 296-4500, regarding the necessary water quality certification. This nationwide permit does not relieve you of the responsibility to obtain other required State or local approval. This verification will be valid until the nationwide permit is modified, reissued or revoked, which will occur by March 18, 2007. It is incumbent upon you to remain informed of changes to the nationwide permits, which will be announced by public notice when they occur. If you commence, or are under contract to commence, this activity before the date the nationwide permit is modified or revoked, you will have twelve months from the date of the modification or revocation to complete the activity under the present terms and conditions of this nationwide permit. Questions or comments maybe addressed to the undersigned, Asheville Regulatory Field Offce, Regulatory Division, telephone (828) 271-7980, extension 224. Sincerely, Stephen D. Chapin Regulatory Specialist, Asheville Regulatory Field Office Enclosures Copies Furnished (without enclosures}: Mr. Mike Osborne CH2M HILL 4824 Parkway Plaza Blvd., Suite 200 Charlotte, North Carolina 2$217 Mr. Mike Goodson NCDENR-Land Quality Section 2090 U.S. Hwy 70 Swannanoa, North Carolina 28778 Mr. Brian Cole U.S. Fish and Wildlife Service 160 Zillicoa Street Asheville, North Carolina 28801 `O~OF W A T~c~~G ~ ~ -.l o -c Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment aitd Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality July 5, 2005 DWQ Project # 05-1151 Polk County Michael Talbert, County Manager Polk County 40 Courthouse Street Columbus, NC 28722 Subject Property: White Oak Creek EWP (DSR 2005-7 8~ $) Appoova{ of 401 Water Quality Certifica#ion with Additional Conditions Dear Mr. Talbert: You have our approval, in accordance with the attached conditions and those listed below, to place fill within or otherwise impact 1,150 feet of streams for the purpose of streambank stabilization at the subject properties, as described within your application received by the N.C. Division of Water Qualify (DWQ} on July 1, 2005. After reviewing your application, we have decided that the impacts are covered by General Water Quality Certification Number(s) 3367 (3367}. The Certification(s) allows you to use Nationwide Permit(s) 37 when issued by the US Army Corps of Engineers {USAGE). In addition, you should obtain or otherwise comply with any other required federal, state or local permits before you go ahead with your project including (but not limited to) Erosion and Sediment Control, Non-discharge, and stormwater regulations. Also, this approval #o proceed with your proposed impacts or to conduct impacts to waters as depic#ed in your application shall expire upon .expiration of the 404 or CAMA Perms#. This approval is for the purpose, but not the design, that you described in Ill. 10. of your application. {Nothing in this approval should be interpreted as giving permission to remove bedload material form the existing channel, nor allowing for the construction of berms which would not allow the stream access to it's floodplain.) if you change your project, you must notify us and you may be required to send us a new application. If the property is sold, the new owner must be given a copy of this Certification and approval letter and is thereby responsible for complying with all conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 linear feet of stream, compensatory mitigation may be required as described in 15A NCAC 2H .0506 {h). This approval requires you to follow the conditions listed in the attached certification and any additional condi#ions listed below. The Addi#ional Conditions of the Certification are: 401 Wetlands Certification Unit 1650 Mail Service Censer, Raleigh, North Carolina 27699.1650 2321 Crabtree Boulevard, Suite 250, Ralegh, North Carolina 27604 Phone: 919-733-1786 /FAX 919-733-689311ntemeY. http:/lh2o.enr.state.nc. us/ncwetlands Ifo~ Carolina ~turA!!y an Equal OpportunitylAffirmativeRction Empbyer-50% Recyc{ed110% Post Consumer Paper -Polk County: Page 2 of 6 July 5, 2005 1. impacts Approved The following impacts are hereby approved as long as all of the other specific and general conditions of this Certification (or Isolated Wetland Permit) are met. No other impacts are approved including incidental impacts: Amount A raved Units) Plan Location or Reference Stream 1.,150 (feet) White Oak Creek 2. Erosion & Sediment Control Practices Erosion and sediment control practices must be in full compliance with all specifications governing the proper design, installa#ion and operation and maintenance of-such Best Management Practices in order to protect surface waters standards: a. The erosion and sediment control .measures for the project must be designed, installed, operated; and maintained in accordance with the most recent version of the North Catalina Sediment and Erosion Contro! Planning and Design Manual. b. The design, installation, operation, and maintenance of the sediment and erosion control measures mus# be such that #hey equal, ar exceed, the. requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual. The devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects, including contractor-owned or leased borrow pits associated with the project. c. For borrow pit sites, the erasion and sediment control measures must be designed, installed, operated, and maintained in accordance with the most recent version of the North CaroNna Surface Mining Manual d. The reclamation measures and implerrnentation must comply with the reclamation in accordance wi#h the requirements of the Sedimentation Pollution Control Act. 3. No Waste, Spail, Solids, or Fill of Anykind No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts. depicted in the Pre-Construction Notification. All construction activities, including the design, installation, operation, and maintenance of sediment and erosion control Bes# Management Practices, shall be performed so tha# no violations of state water quality standards, statutes, or rules occur. Polk County: Page 3 of 6 July 5, 2005 4. No Sediment 8~ Erosion Control Measures w/n Wetlands ar Waters .Sediment and erosion control measures shall no# be placed in wetlands or waters to the maximum extent practicable. If placement of sediment and erasion control devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored within six months of the date that the Division of Land Resources has released the project. 5. Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and .any subsequent modifications, the applicant is required to return the attached certificate of completion to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. 6. Construction in this. creek and disturbance within a 25-foot trout buffer should be avoided during the January 1 to April 15 rainbow trout spawning period to avoid adverse effects of sediment on eggs and larvae. However, Wildlife Resources Commission will not object to construction of Natural Resources Conservation Service "urgent and. compelling" si#es during the spawning period provided these projects are, to the extent appropriate and practical, constructed by: (1) using flow diversion structures such as sand bags, (2) placing large-sized rock toes and filter cloth backing for stabilization. sites before backfilling, and (3) excavating .new channel alignments in dry areas. Construction at the other non"urgent and. compelling" sites should no# occur during the spawning. period to minimize the potential adverse effects of multiple construction activities on trout resources in this creek. 7. Sediment and erosion control .measures must be implemented prior to construction and maintained on the sites to minimize sediment in downstream areas. Seeding for a temporary cover of wheat, millet, or similar annual grain or permanent herbaceous cover should occur on all bare soil within five (5) days of ground disturbing activities to provide long-term erosion control. The projects should be accomplished in stages instead of leaving large tracts exposed to further storm events. Erosion contro! matting. should be used in conjunction with appropriate seeding on disturbed soils in steep slope and riparian areas. Matting should be secured in place with staples, stakes, or, wherever possible, live stakes of native trees. Straw mulch and tall fescue should not be used in riparian areas. In addition, because of an anticipated difl`iculty in establishing ground cover during the winter, reseeding should be conducted, as necessary, in the. spring-time with a native annual and perennial seed mix with a temporary nursery crop of wheat, millet or other grain. Polk County: Page 4 of 6 July 5, 2005 8. Only clean, large, angular rack, large woody material, or other natural stream design materials and techniques should be used for bank stabilization. Rock should not be placed, in the stream channe! in a manner that constricts stream flow or that will impede aquatic life movements during low flow conditions. Filter cloth should be placed behind large rock that is used for bank stabilization. Property designed rock vanes should be constructed wherever appropriate on bank stabilization and channel realignment stream reaches to improve channel stability and. to improve aquatic habitat. Root wads should be installed low enough in the bank so that a significant portion (at (east one-third} the root wad is inundated during normal flows. 9. The channel should be restored to a more stable condition. However, under no circumstances should river rock, sand or other material's be dredged from the stream channel- under authorization of this permit except, if necessary, in the immediate vicinity of the eroding banks for the explicit purpose of anchoring stabilizing or flow/grade control structures or for reestablishing the natural and more stable stream channel dimensions. Stream bed materials are unstable in flowing-water situations and are unsuitable for bank stabilization. In stream dredging has catastrophic effects on aqua#ic life and disturbance of the natural form of the stream channel can cause downstream erosion problems. The natural dimension, pattern, and profile of the . stream upstream and downstream of the permitted area should not be modified by widening the stream` channel or changing its depth. 10. Stabilization measures should only be applied on ar near existing .erosion sites, leaving other stable stream bank areas in a natural condition. Grading and backfilling should be minimized and tree and shrub growth should be retained where possible to ensure long term availability of stream bank cover for aquatic life and wildlife. Backflll matenals should be obtained. from upland sites except in cases where excess stream bed materials are available. Berms. should 'not be permitted because they block the floadplain, constrict and accelerate flood flows, and often fail -and sometimes impede drainage dui-ing large flood events. 11. Repairs to eroded banks should be conducted in a dry work area where possible. Sandbags or other clean diversion structures should be used where possible to minimize excavation in flowing water. Channel realignments should be constructed by excavating the new channe! from downstream to upstream before connecting it to the old channel 12. Heavy equipment should be operated from the bank whenever possible. All mechanized equipment operated near surtace waters should be inspected and maintained regularly to prevent contamination of stream waters from fuels, lubricants, hydraulic fluids or other toxic materials. Equipment''used in s#ream .channel must be clean, new or low hour equipment. 13. Disturbed stream banks and a 25-foot vegetated zone, or the widest width that is practical under the si#e conditions, should be restored where possible along the construction sites to natural riparian conditions with native trees and shrubs (e.g., silky dogwood, rhododendron, dog hobble, red maple, silky willow, tag alder, black willow, sycamore) to provide long-term bank stability and stream shading.- Note, silky dogwood, silky willow and black willow can be planted as live stakes collected during the dormant growing season. Cuttings should be randomly planted on four Polk County: Page 5 of 6 July 5, 2005 (4) foot centers from the waters edge to the top of the bank. Trees should be planted on ten (10) #o twelve (12) foot centers. Stream banks in these areas should also be seeded wi#h a native annual and perennial seed mix with a temporary nursery crop of wheat, millet or other grain. 14.1E pasture along the stream is to be used for grazing, a fence must be constructed outside of the. riparian zone and the stream to prevent livestock from entering these areas. 15. Diffuse Flow All constructed stormwater conveyance outlets shall be directed and maintained as diffuse flow at non-erosive velocities through the protected riparian zones such that it will not re-concentrate before discharging into a stream. If this is not possible, it may be necessary to provide stormwater facilities that are considered to remove nitrogen.. This may require additional approval from this Of€ice. 16. Riparian Zone Replanting Replanting of vegetation within disturbed areas located within 25 feet of the streambank associated with any land disturbing activity, repair, replacement and/or maintenance must be done in a manner consistant with the Guidelines for Riparian Buffer Restoration immediately following construction. (Please see attached.) 17. Deed Notifications Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands, waters and protective woody riparian zones in order to .assure compliance for future wetland, water and buffer impact. These mechanisms shall be pu# in place prior to impacting any wetlands, waters and/or buffers approved for impact under this Certification Approval and Authorization Certificate. A sample deed .notification can be downloaded from the 401M/etlands Unit web site at http:/Ih2o.enr.state.nc.us/ncwetlands. The text of the sample deed notification may be modified as appropriate to suit to this project. 18. Turbidity Standard 'The turbidity standard of 10 NTUs (Nephelometric Turbidity Units) shall not be exceeded as described in 15 A NCAC 2B. .0200. Appropriate sediment and erosion control practices must be used to meet this standard. 19. No Sediment and Erosion Control Measures in Wetlands Sediment and erosion control measures shah not be placed in wetlands or waters to the maximum extent practicable. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored within six months of the date that the Division of Land Resources or locally delegated program has released the project. Polk County: Page 6 of 6 July 5, 2005 Violations of-any condition herein set forth may result in revocation of this Certification and may result in criminal and/or civil penalties. The authorization to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application and as authorized by this Certification, shall expire upon expiration of the 404 or CAMA Permit. If you do not accept any of the conditions 'of this Certification (associated with the approved wetland or stream impacts),, you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this- letter. To ask for a hearing, send a written petition, which conforms to Chapter 1508 of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. !f you have any questions, please telephone Cyndi Karoly in the Centro! Office in Raleigh at 919-733-9721 or Mr. Kevin Barnett in the DWQ Asheville Regional Office at 828-296-4657. Sincerely, Alan W. Klimek, P:E. Director ~~ Division of Water Quiaity AWK/khb Enclosures: GC 3367 Certificate of Completion Guidelines for Riparian Buffer Restoration cc: Mike Osborne; CH2M Hill 4824 Parkway Plaza Blvd. Suite 200 Charlotte, NC 28217 USACE Asheville Regulatory Field Office DWQ Asheville Regional Office DLR Asheville Regional Office File Copy Central Files .Filename: 05-1151. EWP.WhiteOakCreek.Approval ®North Carolina Wildlife Resources Commission Richard B. Hamilton, Executive Director July 23, 2005 Mr. Steve Chapin U.S. Army Corps of Engineers, Regulatory Branch 151 Patton Avenue, Room 208 Asheville, North Carolina 28801-5006 SiTB7ECT: Polk County Nationwide 37 Permit Applications Emergency Watershed Protection projects: • North Pacolet River EWP 2005-20, 21 DWQ No. 051145 • North Pacolet River EWP 2005-4,14 DWQ No. 05114$ • North Pacolet River EWP 2005-5, 11,12, 16 DWQ No. 051149 • North Pacole# River EWP 2005-9,13, i5, 24 DWQ No. 051150 • Whiteoak Creek EWP,2.0..~5-7, $:D~~V-Q No.~051151,..... • Nor[It Paeolet RiverEVJP 2005::2; 3 DWQ lva. 05119. Dear 1VIr. Chapin: CA21vIfliLL, on behalf of Mr. Michael Talbert with Polk County Government, requested a letter of concurrence from the North Carolina Wildlife Resources Commission (Commission) for 404 Permits from the U.S. Army Corps of Engineers (ACOE). We reviewed the applications and are familiar with the project areas. Our comments are provided in accordance with provisions of the Clean Water Act of 197'7 (33 U.S.C. 455 et seq.) and the Fish and Wildlife Coordination Act (48 Stat. 401, as amended;l6 U.S.C. G61-667d}. Polls County is proposing stabilisation work on the North Pacole# River and Whiteaak Creek under the Emergency Watershed Protection (EWP) program. The work will usually consist of vegetation planting and bank sloping or bank sloping with rock toe armoring on portions of sixteen stream reaches totaling over a mile of mile. Some work will also include construction of flow diversion structures. Trout are not expected near most of the project sites. Trout occur in the North Pacolet River, though we suspect that spawning is poor except upstream of Harmon Fields. Therefore, the work on sites 20 and 21 probably has the potential to adversely affect trout resources if construction oceurs during the spawning season. We reiterate that we believe these and other sites on trout spawning waters should receive priority to the extent possible to avoid encroachment on the trout spawning season. Ira addition, sensitive aquatic species have been documented near some of the project sites on the North Pacolet River. Therefore, extra attention to minimizing downstream sedimentation during construction should be used in these areas. The subject applications thoroughly describe the stabilization techniques that will be used for what are often considerable lengths of streams. Typically a representative cross-section is also provided for each site. However, plan views or annotated pictures showing where specific measures or deviations from the Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • ltalelgh, NC 27699-1721 Telephone: (919) 733-3633 ext. 28l • Pao: {919) 715 7643 EWP projects North Pacolet and Whiteoak Page 2 July 23, 2005 Palk County general approach will be needed are usually not included. The exception of this applies to site 2 on the North Pacolet River. The photographs depict where j-hooks will be constructed with some possible modification during construction. This information along with marks showing the start and end of bank sloping and bench construction would give a clearer understanding of what to alterations to expect on the site. We also appreciate the fact that j-hooks will be used because if properly designed and installed, they should improve long-term bank stability and aquatic habitat. We encourage their use wherever possible and appropriate, including the sites where they currently are not specifically proposed, for the same reasons. The Commission supports stream bank stabilization where it is necessary, when the short-term, adverse effects of construction aze minimized, and when measures that promote Iong-term stability are used. Therefore, if the ACOE believes that sufficient information is available in the applications to evaluate the projects before and after construction, then we can concur with the issuance of 404 Permits for these projects provided the following conditions are attached and followed to help conserve resources: I . Construction in and along the North Pacolet River near sites 20 and 21 should rat occur during the October 15 to April i5 trout spawning season. 2. Stringent sediment and erosion control measures must be used and maintained until disturbed soils are permanently stabilized. Seeding for a temporary cover of wheat, millet, or sunilar annual grain or permanent herbaceous cover should occur on all bare soil within five to ten (5-i0) days of ground disturbing activities to provide long-term erosion control. The projects should be accomplished in stages instead of leaving large areas exposed to further storm events. Erasion control matting should be used in conjunction with appropriate seeding on disturbed sails in steep slope and riparian areas. Matting should be secured in place with staples, stakes, or, wherever possible, live stakes of native trees. Straw mulch and tall fescue should not be used in riparian areas. 3. Only clean, large, angular rock, large woody material, or other natural stream design materials and techniques should be used for bank stabilization. Rock should not be placed in the stream channel in a manner that constricts stream flow or that will impede aquatic life movements during law flow conditions. Filter cloth should be placed behind large rock that is used for bank armoring. Properly designed rock vanes or similar strictures should be constructed wherever appropriate to improve channel stability and aquatic habitat. Any root wads should be installed low enough in the bank so that a significant portion (at least one-third} the root wad is inundated during normal flows. 4. Channels should be restored to more stable and natural conditions. However, river rock, sand or other materials be dredged from the stream channels except, if necessary, in the immediate vicinity of the eroding banks for the explicit purpose of anchoring stabilizing or flow/grade control structures or for reestablishing the natural and more stable stream channel dimensions. Stream bed materials are unstable in flowing-water situations and are unsuitable for bank armoring. In stream dredging has severe effects on aquatic life and disturbance of the natural farm of the channel can cause downstream erosion problems. The natural dimension, pattern, and profile of the streams upstream and downstream of the permitted areas should not be modified by widening or changing the depth of the channels. 5. Stabilization measures should only be applied on or near existing erosion sites while leaving other stable stream bank areas in a natuual condition. Grading and backfilling should be minimized and tree and shrub growth should be retained where possible to ensure long term availability of stream bank cover for aquatic life and wildlife. Backfill materials should be obtained from upland sites except in cases where excess stream bed materials are available. Berms should not be constructed because they block the floodplain, constrict and accelerate flood flows, and often erode and impede drainage during large flood events. 6. Repairs to eroded banks should occur in dry work areas where possible. Sandbags or other clean diversion structures should be used where possible to avoid excavation in flowing water. EWP projects North Pacolet and Whiteoak Page 3 July 23, 2005 Polk County Channel realignments and rook debris removals should be excavated from downstream to upstream before reco~ecting to stream flow at the upper end of the site. 7. Heavy equipment should be operated from the bank whenever possible. All mechanized equipment operated near surface waters should be inspected and maintained regularly to prevent contamination of stream waters from fuels, lubricants, hydraulic fluids or other toxic materials. Equipment used in stream channels must be clean, new or Iow hour equipment. 8. Disturbed stream banks and a 25-foot vegetated area, or the widest width that is practical under the site conditions, should be restored where possible along the repair sites to natuxal riparian conditions with native trees and shrubs {e.g., silky dogwood, rhododendron, dog hobble, red maple, silky willow, tag alder, black willow, sycamore). This will help provide iong~erm bank stability and stream shading. Note, silky dogwood, silky willow and black willow can be planted as live stakes collected during the dormant growing season. Cuttings should be randomly planted on four (4) foot centers from the waters edge to the top of the bank. Trees should be planted on ten (l0) to twelve (12) foot centers. Stream banks in these areas should also be seeded with a native annual and perennial seed mix with a temporary nursery crop of wheat, millet or other grain. 9. ff pasture along the stream is to be used for grazing, a fence must be constructed outside of the vegetated area and the stream to prevent livestock from entering these areas. Thank you for the opportunity to review and comment an this project. Pending availability of field staff, the Commission may inspect the work site during or after construction. If there are any questions regarding these comments, please contact me at ($2$) 452-2546 extension 2. Si~In~)cerely, f•~ . Dave McHenry Mountain Region Coordinator Habitat Conservation Program Cc: Mr. Mike Osborne, ClI2MH1LL Mr. K. Barnett, Division of Water Quality, Asheville