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HomeMy WebLinkAbout20051565 Ver 1_Complete File_20050812O?O? W A T ?9QG r August 22, 2005 Alan W. Klimek, P.E. Director Division of Water Quality DWQ Project # 05-1565 Buncombe County Jon Creighton Buncombe County Government 205 College Street Asheville, NC 28801 Subject Property: Gouges Branch - EWP (DSR 2005 -18 & 60) Q19 c?12 oe[9 B AUG 3 1 2005 ?DENR - WATER QUALITY Approval of 401 Water Quality Certification with Additional Condi'"iot10?DSTORM,NATER6RANCN Dear Mr. Creighton: You have our approval, in accordance with the attached conditions and those listed below, to place fill within or otherwise impact 235 linear 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 Quality (DWQ) on August 12, 2005. After reviewing your application, we have decided that the impacts are covered by General Water Quality Certification Number(s) 3376 (3376). 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 to proceed with your proposed impacts or to conduct impacts to waters as depicted in your application shall expire upon expiration of the 404 or CAMA Permit. This approval is for the purpose that you described in your application. As "stable" and "pre-storm" are not interchangeable terms, all work must be to ensure stability, regardless of channel location. Additionally, channels cannot be returned to it's pre- storm location unless there is documented instability which is submitted and approved as part of the application package. If you change your project beyond the activities authorized below, 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 conditions listed below. The Additional Conditions of the Certification are: 101 Wetlands Certification Unit 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 'hone: 919-733-1766 / FAX 919-733-6893 / Internet: http•//h2o.en r. state. n c. us/nc.vetlands Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources NorthCarolina ?Valuna!!jl Nn Equal Cpportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper Buncombe County: Page 2 of 6 August 22, 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 Approved (Units) Plan Location or Reference Stream 235 (feet) Gouges Branch 2. Erosion & Sediment Control Practices Erosion and sediment control practices must be in full compliance with all specifications governing the proper design, installation 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 Carolina Sediment and Erosion Control Planning and Design Manual. b. The design, installation, operation, and maintenance of the sediment and erosion control measures must be such that they equal, or 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 erosion and sediment control measures must be designed, installed, operated, and maintained in accordance with the most recent version of the North Carolina Surface Mining Manual. d. The reclamation measures and implementation must comply with the reclamation in accordance with the requirements of the Sedimentation Pollution Control Act. 3. No Waste, Spoil, Solids, or Fill of Any Kind 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 Best Management Practices, shall be performed so that no violations of state water quality standards, statutes, or rules occur. Buncombe County: Page 3 of G August 22, 2005 4. No Sediment & Erosion Control Measures w/n Wetlands or Waters Sediment and erosion control measures shall 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 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. 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 control matting should be used in conjunction with appropriate seeding on disturbed soils in steep slope and riparian areas, unless authorized under Division of Land Resources Erosion and Sediment Control approval. 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 difficulty 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. 7. 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 low flow conditions. Filter cloth should be placed behind large rock that is used for bank stabilization. Properly 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 least one-third) the root wad is inundated during normal flows. 8. The channel must be restored to a more stable condition. However, under no circumstances should river rock, rock bars, sand or other materials be dredged (excavated) 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 re-establishing the natural and more stable stream channel dimensions. Streambed materials are unstable in flowing-water situations and are unsuitable for bank stabilization. Stream dredging Buncombe County: Page 4 of 6 August 22, 2005 has catastrophic effects on aquatic 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. 9. Stabilization measures should only be applied on or 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. Backfill materials should be obtained from upland sites except in cases where excess stream bed materials are available. Berms are not permitted because they block the floodplain, constrict and accelerate flood flows, and often fail or impede drainage during large flood events. 10. 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 channel from downstream to upstream before connecting it to the old channel. 11. 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 channel must be clean, new or low hour equipment. 12. 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.)Guidelines for Riparian_ Buffer Restoration. C. df ) 13. Monitoring The Permittee shall examine the stabilization work done under this Certification on an annual basis for three (3) years following the completion of the restoration efforts. This field evaluation should note the condition and stability of the measures installed and how well the repair is holding up. A written report must be provided to DWQ's Asheville Regional Office by June 1st of each year. The report must describe inspection results, include digital photographs, list the date of inspection, and describe any needed repairs or corrections. 13.The permittee will provide on-site supervision of stability work including, but not limited to bank re-sloping, in-stream structure placement, and riparian zone re- establishment, by an appropriately trained individual. 14. If pasture along the stream is to be used for grazing, the permittee must inform the appropriate landowners that cattle should be prohibited from damaging riparian areas and from de-stabilizing the stream banks and channel. Buncombe County: Page 5 of 6 August 22, 2005 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. 16. Water Quality Certification Notifications The permittee must provide a copy of this issued Water Quality Certification and attached cover letter to each property owner where the approved work will be performed. 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. 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. Buncombe County: Page 6 of 6 August 22, 2005 This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have any questions, please telephone Cyndi Karoly in the Central Office in Raleigh at 919-733-9721 or Mr. Kevin Barnett in the DWQ Asheville Regional Office at 828-296-4657. Sincerely, e 9?aC64- )r- ;4wed lz4c:?? Alan W. Klimek, P.E., Director Division of Water Quality AW K/khb Enclosures: GC 3376 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 401/Wetlands Central Office DLR Asheville Regional Office File Copy Central Files Filename: 05-1565.EWP. Gouges Branch.Approval Triage Check List Date: 08/18/05 Project Name: Buncombe County Kevin Barnett, Asheville Regional Office To: 60-day Processing Time: 8/12/05 to 10110105 From: Cyndi Karoly Telephone: (919) 733-9721 EWP 2005 -18, 60 DWQ #:05-1565 County: Buncombe The file attached is being forwarded to you for your evaluation. Please call if you need assistance. ? Stream length impacted ? Stream determination Wetland determination and distance to blue-line surface waters on USFW topo maps ? Minimization/avoidance issues ? Buffer Rules (Neuse, Tar-Pamlico, Catawba, Randleman) ? Pond fill Mitigation Ratios ? Ditching ? Are the stream and or wetland mitigation sites available and viable? ? Check drawings for accuracy ? Is the application consistent with pre-application meetings? ? Cumulative impact concern Comments: As per our discussion regarding revision of the triage and delegation processes, please review the attached file. Note that you are the first reviewer, so this file will need to be reviewed for administrative as well as technical details. If you elect to place this project on hold, please ask the applicant to provide your requested information to both the Central Office in Raleigh as well as the Asheville Regional Office. As we discussed, this is an experimental, interim procedure as we slowly transition to electronic applications. Please apprise me of any complications you encounter, whether related to workload, processing times, or lack of a "second reviewer" as the triage process in Central had previously provided. Also, if you think of ways to improve this process, especially so that we can plan for the electronic applications, let me know. Thanks! Office Use Only: Fonn Version May 2002 USACE Action ID No. DWQ No. (it any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. Processing 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 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 37 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 Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), 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 i-7ement Area of Environmental Concern (see the top of page 2 for further details), the R LS D 11. Applicant Information AUG 1 2 2005 1. Owner/Applicant Information DENR - WATER QUALITY Name: Jon Creighton /Assistant Count Manager/Planning Director 11E"4DSAN0ST(XV4ATFR6W4CH Mailing Address: 46 Valley Street Asheville, NC 28801 Telephone Number: 828-250-4835 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: Mike Osborne Company Affiliation: CH2M HILL Mailing Address: 4824 Parkway Plaza Blvd. Suite 200 Charlotte, NC 28217 Telephone Number: 704-329-0073 ext 252 Fax Number: 704-329-0141 E-mail Address: mike.osbomeO)ch2m.com Page 1 of 10 III. Project Information 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 sliects 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: Barnardsville EWP 2005-18 and EWP 2005-60 2. T.I.P. Project Number or State Project Number (NCDOT Only): NA 3. Property Identification Number (Tax PIN): SEE TABLE 1 4. Location County: Buncombe Nearest Town: Dillingham Subdivision name (include phase/lot number): NA Directions to site (include road numbers, landmarks, etc. From I-40, merge onto I-240 W via exit 53B toward Asheville. 1-240 W becomes US-74 ALT W / US-19 S / US-23 S. Turn right onto NC-63 / NEW LEICESTER Hwy and follow for approximately 4.5 miles. Turn left onto NEWFOUND Rd follow for approximately 2 miles and turn slight right onto Crowder Rd. Sec Attachments 1 and 2 for site vicinity and parcel locations. 5. Site coordinates, if available (UTM or Lat/Long): SEE SITE DESCRIPTIONS (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 6. Property size (acres): SEE TABLE 1 7. Nearest body of water (stream/river/sound/occan/lake): Dillingham Creek 8. River Basin: French Broad (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://ii2o.cnr.state.nc.us/admin/maps/.) 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 sites arc in agricultural and low-density residential uses. The stream and stream banks were heavily impacted during Tropical Storms Frances and Ivan. Extensive stream bank erosion threatens the stability of existing structures. Page 2 of 10 9. Describe the overall project in detail, including the type of equipment to be used: EWP 2005-18 This project area consists of approximately 75 linear feet of Gouges Branch. The project area is located at 35.627361°N 82.680889°W. High-water flows have threatened private property. Attachment 1 contains representative photos of the eroded area. Repairs in this reach of stream will involve the following: -Stabilize the channel in its pre-flood configuration using organic and rock structures -Reseed and plant woody vegetation EWP 2005-60 This project area includes approximately 160 area is located at 35.630639° N 82.683333°W and property including commercial grecnhc photos of the eroded area. linear feet of Gouges Branch. The project High-water flows have threatened structures .uses. Attachment 2 contains representative Repairs in this reach of stream will involve the following: -Debris Removal -Stabilize the channel in its pre-flood configuration using organic and rock structures -Reseed and plant woody vegetation The techniques that will be utilized for the proposed repairs at the EWP site listed above are described below. Removal of Organic Debris Fallen trees, limbs, and non-native material within the cross section of the existing or original channel up to and including the debris line shall be removed. Any foreign debris (e.g. trash appliances) will also be removed. Trees leaning over the channel whose near term fall is apparent will be removed. These rooted trees will be cut three feet above the ground surface and the root masses will be left in place. Disturbance of channel bottom and banks and equipment access shall be held to the minimum necessary to allow the construction equipment to remove the debris. All areas disturbed due to debris removal and equipment access shall be reshaped and reseeded. Access to the channel will be perpendicular to the channel so that cutting of trees is held to a minimum with precaution taken to protect mast production and stream canopy trees. These trees will be cut off at ground level so re- sprouting may occur after construction. Dead trees and small brush piles that provide den habitat and are determined to pose no hazard to the channel will be protected. Woody debris will be chipped and disposed of in upland areas or hauled offsite. Page 3 of 10 Streambank Repair When possible, excavation equipment will access strcambank repair areas from the dry and will not track into the stream channel. Most of the steep eroded streambanks are opposite or adjacent to the debris removal areas. At these areas, the rocky material removed from the floodplain will be used to stabilize the stream bank, with the addition of large boulders along the toe of the slope as necessary to stabilize and protect the toe. Where suitable material is available, rock vane and root wads will be installed in the restored bank section to reduce bank stress and provide stability to the unconsolidated fill. An existing cross section and site specific design components are included in Attachments 1 and 2 for each of the impacted channel sections requiring stabilization. Drainage areas of project areas are also included in those attachments. The drainage area is used to determine the design storm peak flow using USGS Rural Regression equations for the Blue Ridge- Piedmont. Design stornl velocity and shear stress values were also calculated. This information, in conjunction with the field investigation analysis, DSR notations, and agency guidance and regulations, arc used to develop an appropriate strcambank stabilization design. Additional information on general design features, erosion control practices and debris removal practices is included in Attachment 3. Equipment that may be used to accomplish the above listed tasks includes; rubber tired skidders, 15 ton dump truck, hydraulic track mounted excavator with thumb, and chainsaws. 10. Explain the purpose of the proposed work: The work addressed in this application is intended to improve post flood hydraulic capacity of the stream reaches discussed and stabilize severely eroded streambanks that arc threatening structures or other property. The proposed actions are not intended to enhance existing conditions or restore stream reaches using natural channel design techniques. Such activities would require detailed engineering evaluation and design, which are beyond the intent of the EWP program. 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. NA Page 4 of 10 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 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. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation fonns 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, debris removal, and streambank stabilization. 2. Individually list wetland impacts below: Welland Impact Site Number indicate on ma) Type of Impact* Area of Impact (acres) Located within 100-year Floodplain** (es/no Distance to Nearest Stream (linear feet Type of wetland*** ' List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For darns, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local Floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http://www.fema.!,,ov. *** List a wetland type that best describes wctland to be impacted (e.g., fresliwatcr/salthvater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) indicate if wetland is isolated (determination of isolation to be made by USACE only). List the total acreage (estimated) of all existing wetlands on the property: None Total area of wctland impact proposed: NA 3. Individually list all intennittent and perennial stream impacts below: Stream Impact Length of Average Width Perennial or Site Number Type of Impact* Impact Stream Name** of Stream Before Intermittent? indicate on ma linear feet Impact (please secif EWP 2005-18 Streambank 75 Gouges Branch 20ft Perennial Stabilization EWP 2005-60 Streambank 160 Gouges Branch 25ft Perennial Stabilization Page 5 of 10 * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, 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. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at wN?w.usgs.,ov. Several internet sites also allow direct do%vnload and printing of USGS maps (e.g., www.topozone.com, www.mnp(l ucsLcom, etc.). Cumulative impacts (linear distance in feet) to all streams on site: 235 4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.) below: Open Water Impact Site Number (indicate on ma) Type of Impact* Area of Impact (acres) Name p Waterbody (if applicable) Type of Waterbody (lake, pond, estuary, sound, bay, ocean, etc. * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: 611, excavation, dredging, flooding, drainage, bulkheads, etc. 5. 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 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 will be kept out of the stream channel, stream crossings will be minimized, and no excavation will be below the existing channel bed. 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 ground disturbing activities. Rocky material shall not be used for bank stabilization above the normal high water mark. Large rocky material will be brought in to stabilize the toe of impacted streambanks where necessary. Page 6 of 10 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 March 9, 2000, 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 NCWRP 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 littp://112o.eiir.state.llc.lls/ilcwetlaiids/strip<dide.lit1111. 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., decd 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. NA Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at (919) 733-5208 to determine availability and to request written approval of mitigation prior to submittal of a PCN. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.ilc.tis/wrp/iildex.lltnl. If use of the NCWRP is proposed, please check the appropriate box on page three 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 of Non-riparian wetland mitigation requested (acres): NA Amount of Coastal wetland mitigation requested (acres): NA Page 7 of 10 IX. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state) funds or the use of public (federal/state) land? Yes ® No ? 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 tile SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No 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 arc 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 (Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 213 .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No ® If you answered "yes", provide the following information: 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 (square feet Multiplier Required Mitigation 1 3 2 1.5 Total - cone t extends out su feet perpenafcufar from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 213.0242 or.0260. Page 8 of 10 XI. Stormwater (required by DWQ) Describe impervious acreage (both 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. Imperviousness will not change. Erosion and sedimentation prevention and control will be maintained throughout this project primarily through: proper water management, construction sequencing, proper staging and stockpiling of materials, and the maintenance, at all times, of suitable channel capacity for expected flow events. Equipment, fiiels, lubricants, or other potential sources of water pollution will not be stored in areas that could be flooded during this project. 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. XIH. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ? No Z Is this an after-the-fact permit application? Yes ? No XIV. 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 for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). NA OKI ica t/AR itIs i { re ate signature is valid ly if an authorization letter from the applicant is provided Page 9 of 10 Table 1. DSR Map ID PIN Owner Property Owner's City State Zip Streambank Number size Address stabilization (acres) EWP 2005- DSR18 9700.04-54- Roger Justice 0.64 58 Crowder Rd Leicester NC 28748 75 LF 18 6123.000 EWP 2005- DSR60 9700.04.54- Greg Black 14.41 70 Crowder Rd Leicester NC 28748 160 LF 60 7778.000 Page 10 of 10 Attachment 1- DSR 18 la. Vicinity Map 1 b. Site Map le. Site Photos Id. Cross Section and Site Specific Design Page 1 e. Drainage Areas Access Agrcements J ~??1 ;ot ?t 1l t , J ?l DSR18 16 r Leicester, N.C. USGS Quad 0 250 500 1,000 N Buncombe County Stream Assessment Feet Newfound Watershed DSR18 Donna Justice %0 CH2MHILL Oupw Attachment lb DSR 18 - Newfound Creek Watershed Buncombe County, NC Roger Justice Parcel 6123 DSR 18 Dona Justice . q to 01 -- -------- =a -,at- V- - NQ- ---------- -: -- j; . 5 ••r ,w a.i.. .w .t ap. , Fn ;4ti5,?zazzes is i J r /LVV Buncombe Co., Newfound Watershed, Gouches Branch, DSR 18 Design Parameters Apply to Site Figure Title X EXISTING SITE PLAN WITH MARKUPS 1 BANK STABILIZATION TYPICAL SECTION X 2 BANK STABILIZATION WITH ROCK TOE TYPICAL SECTION 3 STREAM CHANNEL BENCH TYPICAL SECTION 4 TYPICAL J HOOK DETAIL 5 TYPICAL CROSS VANE DETAIL X 6 SUGGESTED VEGETATION LIST X 7 STABILIZATION PLANTING PLAN 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 X 15 TEMPORARY STREAM CROSSING DETAIL X 16 LAND QUALITY STOCK PILE LAYOUT X 17 LAND QUALITY STREAM CROSSING LAYOUT X 18 LAND QUALITY DEBRIS REMOVAL LAYOUT 19 STREAM PLUG DETAIL Initials: KSB Date 8/7/2005 Notes and/or Measurements 75 LF of right bank; A = 2.0 (see Site Plan) EC Fabric = 4.5 Ib/ftz I opO? ® 'O 10 8 ? o o ai ZMJ4 vi: Legend d7 DSR Project Site S/?aer Interstate Highway a„ch Major Road Major Hydrography Subwatershed 0 Municipality G?ee? County Boundary ? o kOJ ?e U C Roy DSR18 m oatii??er Drainage Area 0.79 sq. miles aq?h o s SR18 Y U x O 0 0.25 0.5 1 Miles N Newfound Watershed, 10 CH2MHILL .i. A DSR18 Buncombe County, NC Donna Justice Drainage Area Map f'S? ? ItQ. t PERMIT FOR EMERGENCY WATERSHED PROTECTION (EWP) The undersigned landowners hereby grant permission to Buncombe County and the Buncombe County Soil and Water Conservation District and/or their agents to enter upon our land for the purpose of repairing the flood damage of stream channels and stream banks in the KeV4"A ? watershed. This permit includes the right to spread soil, remove and dispose of debris, install needed measures, seed and mulch, and perform similar emergency watershed protection work necessitated by the floods of September, 2004. This permit also includes the right of ingress and egress on the land for the purpose of maintaining or inspecting maintenance of the emergency works for the period of 1 year from the date of completion. Work areas covered by this permit are sketched on the reverse of this form or on an attached sheet. Sinned Date Signed Date /2:06 a 5 -t BUNCOMBE COUN1. SOIL AND WATER CONSERVATION DISTRICT 155 Hilliard Avenue, Suite 204 (828) 2504785 Asheville, NC 28801 FAX: (828) 2514908 Buncombe County Soil and Water Conservation District 155 Hilliard Avenue, Suite 204 Asheville, NC 28801 Ref. Stream Restoration Measures upon my property -77?t5j,-C2 I/We R?Gi tom " D, fy)11 r'' own property located in Buncombe County, reference PIN number and said property is adjacent to _ N r5oxw!?. (stream) do hereby agree that the work and construction of improvements made and installed on my land by Buncombe County will be preserved and maintained, not altered, removed, or destroyed, which will include protected grass, trees, or other vegetation that was planted for their intended purposes, for a period of one year following the completion of said work. Operation and maintenance will be defined as reasonable and customary measures that a landowner can conduct on their own'. The landowner will not be responsible for damages caused by catastrophic events such as heavy rains or other natural events beyond the control of the landowner. If any needed improvements or repairs are needed as a result of the landowner's lack of maintenance, alteration or destruction of improvements will be performed at owner's expense. The landowner will allow Buncombe County or its' agents access to their property for purposes of inspection for a period of one year after completion of improvements. ? f Landowner Signature downer Signature s?igb) Date s n/rls'? / Da(- Attachment 2 - DSR 60 2a. Vicinity Map 2b. Site Map 2c. Site Photos 2d. Cross Section and Site Specific Design Page 2e. Drainage Areas Access Agreements l - l J j 'J? e r ,4 DS R60 16 r Leicester, N.C. USGS Quad N Buncombe County Stream Assessment 0 26 soo ? Feet Newfound Watershed F DSR60 Greg Black 00 CH2MHILL s Attachment 1 b DSR60 -Newfound Creek Watershed Buncombe County, NC Greg Black Parcel 7778 DSR 60 Greg Black , Go RAI-4 rvH PAf,KoR? 3 a j i i .;2 --,_ ------------ ------------- . 6.. . ___??.___...____...... _........ ryt_.___.,...---.,,.. ------- •--------- ----.__-- ------- ---.-. V%.4 Buncombe Co., Newfound Watershed, Gouches Branch, DSR 60 Design Parameters Initials KSB Date 8/7/2005 Apply to Site Figure Title Notes and/or Measurements X EXISTING SITE PLAN WITH MARKUPS X 1 BANK STABILIZATION TYPICAL SECTION 160 LF of right bank; A = 1.5 (see Site Plan) NOTE 1 2 BANK STABILIZATION WITH ROCK TOE TYPICAL SECTION 3 STREAM CHANNEL BENCH TYPICAL SECTION 4 TYPICAL J HOOK DETAIL 5 TYPICAL CROSS VANE DETAIL X 6 SUGGESTED VEGETATION LIST X 7 STABILIZATION PLANTING PLAN 8 BENCH PLANTING PLAN X 9 LIVE STAKE DETAIL X 10 DEAD STOUT STAKE DETAIL X 11 EC FABRIC INSTALLATION DETAIL EC Fabric = 4.5 lb/fe X 12 EC FABRIC ANCHOR DETAIL X 13 STABILIZATION CONSTRUCTION ENTRANCE DETAIL X 14 TEMPORARY SILT FENCE DETAIL X 15 TEMPORARY STREAM CROSSING DETAIL X 16 LAND QUALITY STOCK PILE LAYOUT ° ,. X 17 LAND QUALITY STREAM CROSSING LAYOUT X 18 LAND QUALITY DEBRIS REMOVAL LAYOUT 19 STREAM PLUG DETAIL ?? a NOTE 1 Top edge of cut slope shall not encroach within 2 LF of structures or buildings ?,. 2n14 a fiL ® A Legend DSR Project Site ? Sl?der Interstate Highway anch Major Road Major Hydrography Subwatershed Municipality Gcee? County Boundary 0 eo?° DSR60 Drainage Area 0.84 sq. miles U C R ?0 m Gna'S'i// r 6?a?ch Zr 0 R60 .Y v U x O 0 0.25 0.5 1 Miles I I DSR60 N Newfound Watershed, Buncombe County, NC 10 CH2MHILL Greg Black 4011. A Drainage Area Ma p ° "BUNCOMBE COUNTY SOIL AND WATER Z CONSERVATION DISTRICT A F 155 Hilliard Avenue, Suite 204 (828) 250-4785 Asheville, NC 28801 FAX: (828) 2514908 a Buncombe County Soil and Water Conservation District 155 Hilliard Avenue, Suite 204 Asheville, NC 28801 Ref: Stream Restoration Measures upon my property I/We ? Q? Ae? own property located in Buncombe County, reference PIN number and said property is adjacent to /v &VRol Il cY (stream) do hereby agree that the work and construction of improvements made and installed on my land by Buncombe County will be preserved and maintained, not altered, removed, or destroyed, which will include protected grass, at was planted for their intended purposes, for a period of one year following the completion of said work. Operation and maintenance will be defined as reasonable and customary measures that a landowner can conduct on their own. The landowner will not be responsible for damages caused by catastrophic events such as heavy rains or other natural events beyond the control of the landowner. If any needed improvements or repairs are needed as a result of the landowner's lack of maintenance, alteration or destruction of improvements will be performed at owner's expense. The landowner will allow Buncombe County or its' agents access to their property for purposes of inspection for a period of one year after completion of improvements. Landowner Signature Date Landowner Signature Date L??n ff G??S Vctd?- l0 PERMIT FOR EMERGENCY WATERSI ED PROTECTION (EWP) The undersigned landowners hereby grant permission to Buncombe County and the Buncombe County Soil and Water Conservation District and/or their agents to enter upon our land for the purpose of repairing the flood damage of stream channels and stream banks in the Kew"6( aee - watershed. This permit includes the right to spread soil, remove and dispose of debris, install needed measures, seed and mulch, and perform similar emergency watershed protection work necessitated by the floods of September, 2004. This permit also includes the right of ingress and egress on the land for the purpose of maintaining or inspecting maintenance of the emergency works for the period of 1 year from the date of completion. Work areas covered by this permit are sketched on the reverse of this form or on an attached sheet. Si ned Date Signed Date j General Notes The Contractor shall make his own determination of the existing subsurface conditions. In areas where proposed construction may conflict with existing utilities, the Contractor shall take all necessary precautions to avoid damage to the utilities. Notify and locate all impacted utilities at least 48 hours prior to excavation. Any damage sustained to utilities shall be repaired by or under the direction of the utility owner at the Contractor's expense. All existing facilities, including but not limited to sidewalks, roads, lawns, landscape vegetation, etc., inside and outside of construction limits that are disturbed under this contract shall be reestablished and/or reconstructed to the original condition at the Contractor's expense. Construction Sequence 1. Begin work at the upstream end of the project reach. 2. Construct proposed structures according to the plans and specifications. 3. Grade stream banks to proposed grade, and tie into existing banks upstream and downstream. 4. Overbank areas (beyond top of bank) adjacent to the project reach shall be graded for positive drainage toward the stream. 5. Apply temporary stabilization to the disturbed areas at the end of each work day. 6. Repeat steps 1 through 5 for each segment of the project reach, working downstream. Site Stabilization 1. Conduct soil test to confirm necessary lime and fertilizer amendments. Appropriate lime and fertilizer shall be applied prior to seeding and incorporated to a depth 3 to 5 inches below the surface. 2. Temporary stabilization will be applied to all disturbed areas on a daily basis. Areas shall be seeded with rye grass at a rate of 15 lbs./ac. and long straw or hay mulched. Straw shall consist of thoroughly threshed wheat, rye or oat straw, reasonably bright in color, and shall not be musty, moldy, caked, decayed, or excessively dusty and shall be free of noxious weed seeds. 3. Permanent soil stabilization shall be completed within 7 calendar days of initial soil disturbance or re-disturbance. Planting and seeding shall be incorporated into the subsoil at the rates prescribed on Figures 6, 7, and 8. Contractor shall follow NCDWQ Guidelines for Riparian Restoration, http://h2o.enr.state.nc.us/wrp/pdf/buffers.pdf 4. All earth fill in excess of 1 ft depth should be installed in lifts of maximum 6-inches and mechanically compacted. 5. All rock used for bank stabilization and in-stream structures shall be 3 ft to 4 ft angular rock. 6. Erosion Control (EC) Fabric shall be woven coir mat, secured with dead stout stakes, and shall meet the following standards: 50% open area (maximum) 0.5 inch maximum opening size 4.5 lbs. per sq. foot maximum sheer stress 10 fps minimum velocity CLT/GENERAL NOTES_NF.DOC USE OR DISCLOSURE OF DATA CONTAINED ON THIS SHEET IS SUBJECT TO THE RESTRICTION ON THE TITLE PAGE OF THIS PROPOSAL. 7. Filter fabric shall be Amoco Propex 2002 woven geotextile or equivalent. Cut excess filter fabric so no fabric is visible after installation. 8. Seeded areas not specified for coir fabric, shall be mulched with long straw or hay mulch immediately after seeding areas at a rate of 2 tons/acre (uniform loose depth of 1" to 2"). Straw shall consist of thoroughly threshed wheat, rye or oat straw, reasonably bright in color, and shall not be musty, moldy, caked, decayed, or excessively dusty and shall be free of noxious weed seeds. Mulch shall be secured with biodegradable netting (Robex Super Flow or Equal). 9. The Contractor shall be responsible for maintaining seeded areas until 95% vegetative cover is established. Should any seeded area fail to germinate, or washing of any areas occur requiring re-establishment of seeding, the Contractor shall replace any lost soil material and re-seed and re-mulch such areas at Contractor's expense. Standard Erosion and Sediment Control Notes 1. The Contractor shall protect all points of construction ingress and egress by installing a temporary construction entrance as shown in details to prevent the deposition of materials onto public roads. All materials deposited onto public roads shall be removed immediately. 2. The Contractor shall re-vegetate or restore access roads (including construction entrance) to match pre-construction conditions. 3. The Contractor shall inspect daily and maintain continuously in an effective operating condition all erosion and sediment control measures until such times as they are removed with prior permission from Engineer or agency inspector. 4. The Contractor shall protect trees and landscaping not marked for disposal from damage. Any damage that occurs shall be repaired at the Contractor's expense. 5. Fencing shall be maintained for animal containment. The Contractor shall provide temporary fencing to allow for execution of the work. The Contractor shall keep construction equipment away from livestock and take all precautions to prevent injury to animals. CLT/GENERAL NOTES_NF.DOC USE OR DISCLOSURE OF DATA CONTAINED ON THIS SHEET IS SUBJECT TO THE RESTRICTION ON THE TITLE PAGE OF THIS PROPOSAL. ISTING TOP OF BANK PROPOSED GRADE CUT 3 MIN. (NOT STEEPER) EC FABRIC SEE FIGURE 7 I NOTE: HEIGHT "A" IS MEASURED FROM DEEPEST POINT IN CHANNEL CROSS-SECTION DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 EXISTING STREAMBED EXISTING GRADE BASE FLOW TITLE BANK STABILIZATION TYPICAL SECTION N TS FIGURE 1 EXISTING TOP OF BANK CUT Z 2' MIN. OF EXPOSED PROPOSED GRADE 1 ROCK 3 MIN. ROCK TOE (NOT STEEPER) 2' MIN. OF ROCK EMBEDDED IN BANK EC FABRIC SEE FIGURE 7 BASE FLOW A NOTES: 1 2 1. HEIGHT "A" IS MEASURED FROM DEEPEST POINT IN CHANNEL CROSS-SECTION. FILTER FABRIC 2. FILTER FABRIC SHALL BE AMOCO PROPEX 2002 WOVEN GEOTEXTILE OR EQUIVALENT. LAY FILTER FABRIC UNDER TRENCH ROCK AND UP BEHIND ROCKS. CUT EXCESS FILTER FABRIC SO NO FABRIC IS VISIBLE AFTER INSTALLATION. BACKFILL WITH WELL-DRAINING SOIL (USE NATIVE MATERIAL WHENEVER POSSIBLE). MIN. OVERLAP OF COIR OVER FILTER FABRIC OF 12". DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH21111HILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, INC 28217 KEY IN ROCK TOE ONE ROCK DIAMETER 4' MIN. EXISTING STREAMBED TITLE I FIGURE BANK STABILIZATION WITH ROCK TOE TYPICAL SECTION Z N TS EXISTING TOP OF BANK EXISTING GRADE CUT PROPOSED GRADE 1 1 3 MIN. CB (NOT STEEPER) EC FABRIC SEE FIGURE 7 NOTES: 1. HEIGHT "A" IS MEASURED FROM DEEPEST POINT IN CHANNEL CROSS-SECTION. 2. FILTER FABRIC SHALL BE AMOCO PROPEX 2002 WOVEN GEOTEXTILE OR EQUIVALENT. LAY FILTER FABRIC UNDER TRENCH ROCK AND UP BEHIND ROCKS. CUT EXCESS FILTER FABRIC SO NO FABRIC IS VISIBLE AFTER INSTALLATION. BACKFILL WITH WELL-DRAINING SOIL (USE NATIVE MATERIAL WHENEVER POSSIBLE). MIN. OVERLAP OF COIR OVER FILTER FABRIC OF 12". DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 KEY IN ROCK TOE ONE ROCK DIAMETER 4' MIN. TITLE 2 1 STREAM CHANNEL BENCH TYPICAL SECTION N TS T BASE FLOW A 1 FIGURE 3 GRADE TO DRAIN (1% MAX.) STREAM CHANNEL BENCH i? JFILL ` EXISTING STREAMBED ?l FILTER FABRIC ?\ BANKFULL ELEVATION CROSS SECTION VIEW BOULDER BANKFULL ELEVATION FLOW DIRECTION ?-2-7% 1 z _ FOOTER -J 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 CH2MHILLa 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 CHANNEL BED FLOW G DIRECTION 02T \ ?,t1 G i\ CAPS "\ \ (1/4-1/3 ROCK DIA.) oO 2 M, 1 I SCOUR POOL I PLAN VIEW BOULDERS W SOURCE: APPLIED ECOLOGICAL SERVICES, INC TITLE FIGURE TYPICAL J HOOK DETAIL 4 NOT TO SCALE FOOTER 5'MIN. J CROSS SECTION VIEW BANKFULL ELEVATION FLOW X2_7% DIRECTION f- BOULDERS /-CHANNEL BED FOOTER 2 -. PCOL:i._J r- FLOW DIRECTION ? I Q m 213 W I O SCOUR POOL PLAN VIEW NOTES: 1. BOULDER SIZE IS 4' MINIMUM OR AS SPECIFIED ON PLANS. PROFILE VIEW 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 J 7 4 Q Q1 20• TRENCHED IN 3' MIN. AND COVERED SILL MUST BE TIED IN TO BANKFULL ELEVATION SOURCE: APPLIED ECOLOGICAL SERVICES, INC TITLE FIGURE TYPICAL CROSS VANE DETAIL NOT TO SCALE Mountain Region Suggested Vegetation List TREES S P F SMALL TREES/SHRUBS S P F HERBACEOUS VEGETATION FOR SEED MIX Betula lenta Alnus serrulata Arisaema triphyllum Scirpus validus cherry birch x x tag alder x x x jack-in-the-pulpit soft stem bulrush Betula nigra Amelanchierarborea Asclepias incarnata Sparganium amencanum river birch x x serviceberry x x swamp milkweed bur-reed Carya corditormis Aronia arbutitolia Carex crinata Thelypteris palustris bitternut hickory x x x red chokeberry x x fringed sedge marsh fern Carya ovata Asimina triloba Carex intumescens Uniola latitolia shagbark hickory x x x common pawpaw x x bladder sedge river oats Diospyros virginiana Calycanthus tloridus Carex lupulina Vernonia noveboracensit persimmon x x x sweet-shrub x x hop sedge ironweed Fraxinus pennsylvanica Carpinus caroliniana Carex lurida Leersia oryzoides green ash x x ironwood x x lurid sedge rice cutgrass Halesia caroliniana Cornus alternitolia Carex scoparia Lobelia cardinalis siiverbell x x alternate leaf dogwood x x broom sedge cardinal flower Nyssa sylvatica Cornus amomum Carex stricta Lobelia siphilitica blackgum x x x silky dogwood x x tussock sedge great blue lobelia Platanus occidentalis Corylus americana hazel- Carex vulpinoidea Ludwigia alternitolia sycamore x x nut x x fox sedge bushy seedbox Prunus serotina Hamamelis virginiana Chelone glabra Panicum virgatum black cherry x x x witch-hazel x x turtlehead switchgrass Salix nigra Ilex verticillata Cyperus strigosus Polygonum sagittatum black willow x x winter berry x x x umbrella sedge tearthumb Tilia heterophylla Leucothoe axillaris Elymus hystrix Scirpus atrovirens white basswood x x doghobble x bottlebrush grass green bulrush Lindera benzoin Eupatorium fistulosum Scirpus cyperinus S = Shade spicebush x Joe-pye-weed woolgrass P = Partial Sun Lyonia ligustrina x Eupatorium perfoliatum Juncus ettusus F = Full Sun Lyonia ligustrina boneset soft rush Magnolia tripetala x Impatiens capensis umbrella tree jewel-weed Physocarpus opulifolius ninebark x x x Rhododendron periclymenoides wild azalea x x Rhododendron viscosum swamp azalea x x Rosa palustris swamp rose x x Salix sericea silky willow x x Spirea latitolia meadowsweet x Symplocos tinctoria sweet leaf x x Viburnum cassinoides W ithe-rod x x x Xanthorhiza simplicissima yellow-root x TITLE DRAWN: GMH SUGGESTED VEGETATION LIST DAATE:MANAGER: 5JMO /2005 CH2MHILL FIGURE 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 APPROX. WIDTH OF CHANNEL LIVE STAKE ZONE TO EDGE OF WATER PLANTING WIDTH WILL VARY TO LANDOWNER COMPLIANCE AND PROJECT SPECIFICATIONS. EXISTING SURFACE ELEVATION ZONE I ZONE 2 SYMBOL HERBACEOUS SEEDING DESCRIPTION SYMBOL WOODY VEGETATION DESCRIPTION -TO BE SEEDED IMMEDIATELY WITH TEMPORARY RYE GRASS AT 15 LBS/ACRE SEEDING RATE. NATIVE TREE AND SHRUB SPECIES TO BE PLANTED AT A DENSITY OF 436 TREES/ACRE, WHICH IS SUFFICIENT TO PROVIDE 320 TREES/ACRE -FOLLOWING CONSTRUCTION, AREA TO BE SEEDED WITH A NATIVE, PERMANENT GRASS/HERB MIXTURE AT 15-20 LBS/ACRE SEEDING RATE. AT MATURITY. FOLLOW NCDWQ GUIDELINES FOR RIPARIAN BUFFER RESTORATION. -SHRUB SPECIES INCLUDE BUT ARE NOT LIMITED TO: -HERB/GRASS SPECIES INCLUCE BUT ARE NOT LIMITED TO: Agrostis a/ba Carex spA DacVis g/omerata Alnus serratula, Cephalanthus occidentalis, Cornus stricta, Rhododendron maximum, salix , , , Panicum spp., Pennisetum glaucum, Secale cereale, ETC LIVE STAKES TO INCLUDE Cornus spp. and Salix serica LIVE STAKES SPACED ON 2' CENTERS serecia, Sambucus canadensis, etc. -TREE SPECIES INCLUDE BUT ARE NOT LIMITED T0: Acerspp., 6etula spp., Fraxinus spp., Juglands Nigra, Liriodendron Tulipitera., Pinus strobus., 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 15-20 LBS/ACRE SEEDING RATE. AT LEAST 3 SPECIES OF TREES AND 5 SPECIES OF SHRUBS SHOULD BE USED. ?NnTFr -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 1°1211/ HILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 TITLE ZONE2 ZONE1 VARIES T 3' \or?\ EXISTING STREAMBED STABILIZATION PLANTING PLAN FIGURE 7 APPROA. WIDTH OF CHANNEL S' 1 LIVE STAKE ZONE TO EDGE OF WATER PLANTING WIDTH WILL VARY TO LANDOWNER COMPLIANCE AND 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 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 15-20 LBS/ACRE SEEDING RATE. AT MATURITY. FOLLOW NCDWO GUIDELINES FOR RIPARIAN BUFFER RESTORATION. -SHRUB SPECIES INCLUDE BUT ARE NOT LIMITED TO: -HERB/GRASS SPECIES INCLUDE BUT ARE NOT LIMITED TO: Alnus serratula, Cephalanthus occidentalis, Agrostis a/ba Carex spp Dactylis glomerate Cornus stricta, Rhododendron maximum, salix , ., , Panicum spp., Pennisetum glaucum, Secato cereale, serecia, Sambucus canadensis, etc. ETC. -TREE SPECIES INCLUDE BUT ARE NOT LIMITED TO: LIVE STAKES TO INCLUDE Cornus spp. and Acerspp., Betula spp., Fraxinus spp., Jug/ands Salix serica Nigra, Liriodendron Tulipitera., Pinus strobus., LIVE STAKES SPACED ON 2' CENTERS P/atanus occidentatis., Robin/a Pseudoacacla., etc. -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 SHRUBS 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 EXISTING STREAMBED J FIGURE 8 EC FABRIC 2' MAX SPACING ESTABLISHED PLANT SHOWN FOR INFORMATION ONLY O 30" LIVE CUTTING (DORMANT) - TYP DEAD STOUT STAKE TYP, SEE FIGURE 10 NOTE: INSTALL LIVE STAKE SO z3 LENGTH IS (MIN. 20") BELOW GROUND DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH21e1 HILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 0 GROUND O TITLE NITS LIVE STAKE DETAIL FIGURE 9 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. DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 TITLE FIGURE H2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 DEAD STOUT STAKE DETAIL NTS 10 SOIL BIOENG;NEERING E 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, 4.5lbs/sq. ft. MAX. SHEER STRESS, 10 fps MIN. VELOCITY. OF BANK ANCHOR, TYP SEE FIGURE 12 JND, TYP rp. DRAWN: GMH TITLE FIGURE PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 EC FABRIC INSTALLATION DETAIL 11 NTS F:\CAD\NRCS\Cad-Details\Fig11.dwg, 05/12/2005 03:52:00 PM, PDF995 (temporary).pc3 17 17 12' EC FABRIC BACKFILL DEAD STOUT STAKE SEE FIGURE 10 TOP OF BANK ANCHOR OFBANK \ EC FABRIC BASE FLOW ?2 z DEAD STOUT STAKE GROUND SURFACE SEE FIGURE 10 OR STREAM BOTTOM BACKFILL MAT WRAPS OVER TOP OF STAKE @ TOE TOE OF BANK ANCHOR NOTES 1. CLEAN SOIL BACKFILL SHALL BE 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 H2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 NTS EC FABRIC ANCHOR DETAIL 12 50' MIN. PUBLIC STREET EXISTING GROUND z m SOIL STABILIZATION FABRIC UNDER 2'-3' WASHED STONE 50' MIN.* w 'OR AS SPECIFIED Z cr F ON PLAN SHEETS N U J Q1 ,m a 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 STE WIRE FENCING C z?.J FILTER FABRIC J V K O ? WOVEN FILTER FABRIC o i N ? 6 STEEL POST WIRE FENCING FILTER FABRIC #5 WASHED STONE GENERAL NOTES: 1. FILTER FABRIC FENCE SHALL BE A MIN;MUM OF 32' IN WIDTH AND SHALL HAVE A MINIMUM OF 6 LINE WIRES WITH 12' STAY SPACING. 2. WOVEN FILTER FABRIC BE USED WHERE SILT FENCE IS TO REMAIN FOR A PERIOD OF MORE THAN 14 DAYS. 3. STEEL POSTS SHALL BE 5'-0' IN HEIGHT AND BE OF THE SELF-FASTENER ANGLE STEEL TYPE. 4. WIRE FENCING SHALL BE AT LEAST #10 GAGE WITH A MINIMUM OF 6 LINE WIRES WITH 12' STAY SPACING. 5. TURN SILT FENCE UP SLOPE AT ENDS. 6. WIRE MESH SHALL BE MIN. 13 GAGE WITH MAXIMUM 12' OPENINGS. 7. WIRE AND WASHED STONE WILL BE REQUIRED WHEN: AT TOE OF SLOPES GREATER THAN 10 FEET VERTICAL (2:1 SLOPE) DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 MAINTENANCE NOTES: STEEL POST WIRE FENCING -ANCHOR SKIRT 6' MINIMUM u IN LIEU OF BURYING SKIRT, 6' OF #5 WASHED STONE MAY BE USED OVER TURNDOWN. SEE SECTION B-B. SECTION A-A 1. FILTER BARRIERS SHALL BE INSPECTED BY THE FINANCIALLY RESPONSIBLE PARTY OR HIS AGENT IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL ANY REPAIRS NEEDED SHALL BE MADE IMMEDIATELY. 2. SHOULD THE FABRIC DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE END OF THE EXPECTED USABLE LIFE AND THE BARRIER STILL IS NECESSARY, THE FABRIC SHALL BE REPLACED PROMPTLY. 3. SEDIMENT DEPOSITS SHOULD BE REMOVED WHEN DEPOSITS REACH APPROX. HALF THE HEIGHT OF THE BARRIER. ANY SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT FENCE IS REMOVED SHALL BE DRESSED TO CONFORM TO THE EXISTING GRADE, PREPARED AND SEEDED. 4. REMOVE SILT FENCE 1 YEAR PAST CONSTRUCTION. CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 N.T.S. TITLE TEMPORARY SILT FENCE DETAIL 1 -ANCHOR SKIRT 6' MINIMUM SECTION B-B FIGURE 14 5' MAX. BANK HEIGHT / STREAM CHANNEL J SURFACE FLOW DIVERSION STONE OVER FILTER FABRIC (SEE NOTE 2) STONE APPROACH SECTION 5:1 MAX. SLOPE ON ROAD 1. USE #57 WASHED STONE 2. OMIT #57 WASHED STONE ON CHANNEL BOTTOM IF CROSSING A COBBLED BED STREAM. 3. REMOVE STONE AND FILTER FABRIC AFTER CONSTRUCTION AND TIE INTO EXISTING GRADE. VEGETATE SITE ACCORDING TO PLANTING PLAN. ORIGINAL STREAMBANK r o? STONE OVER -? "_l o FILTER FABRIC I 6" MIN. r - TEMPORARY ACCESS AS SPECIFIED BY ENGINEER FILTER FABRIC DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 TITLE FIGURE TEMPORARY STREAM CROSSING DETAIL 15 NTS V STAEDTLER0 No. 937 811 E Engineer's Computation Pad 1?oa d , 50/ t ? , Sta b? /? zec/ C o r1S/ /S+G ?%v? ? ,5 J?OLI4?? le. r G ? ?f L aa?'^5 ?reci ? Co.ts7????? &,Ia/c(- /gars as rI eGC ss??? v-o of P„e?? " n o i?c Aioc./ road, See %?roY,G?e sl?ad/;y/, ?•l OC4R5s Jyliroa?lT 4 a Y9r Cnqd S?P'8Q'1 r SNC ?-G^,?40r-wry ,S fie., ..7 /t L'3 ]? ye S 7??'cp -?•r ?4n ?G G/r?4k T'l' er- ?,/moo 6oN/o1P?- - Co n )4roP ' - - - - -- /lea scree. r i , ?TGV,lidBG? f'V ,r SI 13,, r re Strea.r, /vo 7f' t o SG4/c Source: NC Land Quality Section Figure 16 4r/t r1o X. ?)5G4EDTLER® No. 937 811E Engineer's Computation Pad ?i oaol got Con s ?/•+o/?',`[n En?ip?Le ? ? ?e .?, ono l t ti 4e e =F 71-41-- CIe41;3 l'o-• Dva l l'esali4J in 4 /oss p 7= ?-}/?O ?In Cr? ?.Ovtr? S?irrr?Hfw f•'p'i Co/1 a! /r/ PA Sares S?ra /? G ro /Ora f «? 7`,4e s7`/'e a.n IeOOsa.e''l? ya..//lo•cal' o YSI/a .f 6' /3,. - - 5?d;/,??? 5 /Y. ?Vr /.3?• c ? n ? ?JuT'te15 SLior??o^? ?c ??`?7?eG? •Ae44r, S J Ou? 8r, !ou*7 er ? /{e,.,o?? ?raG / /?o5s.??c?, Gv•?'h/ t-v.:.ol.%.,5 Source: NC Land Quality Section Figure 17 lt?s rfo ?' V STA EDTLER® No. 937 811 E Engineer's Computation Pad 41ev a Gf CVr1J??«c?r'o7 t(1 CdHS?/?'?? 4,1,Ae/ ?AGIS GS // /JeGCSS/G?/ ?e ClivB/?' /?•nor7^ /'C ,SjrJr?O? ?L)? .C/I ?tr3,4? NtTGr 1. E ? Sim; fug /o CUrr J /.... ?i'or+ f?n?rc..a` r 1 ??OOrG /"./L' / (??;,7,?i.+c? N?Orr G o.sr/J/e J?,b.7 c? G?e.? r. S 1 ?/ J ? re•yrv?( ? r leer t 1 ? r ??'?? /r SOU • ?e Y.?? (.r 4 rI ?l"O ( ?EG?r !•t ?G S?AL• ?: jttr E c,r?7m•,r? oil s &4 7 tf?er?onC toga - ,4f S SaM /Vc',L 7( v Seale- Source: NC Land Quality Section Figure 18 4/?-?os P?PN/ ?0 CHANNEL- / / GRAVEL/COBBLE BAR \ ?( ACTIVE CHANNEL PLAN VIEW (REVERSE FOR ABANDONED CHANNEL ON OPPOSITE BANK) FLOW EXISTING END PLUG AT EDGE CHANNEL BED OF ACTIVE CHANNEL 10' MIN. FILTER FABRIC / DIMENSION "A" MIN. - - - ACTIVE - 2' MIN. CHANNEL / 2 MIN. 7 2' MIN. EXISTING CHANNELBED ROCK MEDIAN 3.5'DIA. GRAVEL/COBBLE BAR SECTION A-A NT DRAWN: GMH PROJ. MANAGER: JMO DATE: 5/2005 CH2MHILL 4824 PARKWAY PLAZA BOULEVARD SUITE 200 CHARLOTTE, NC 28217 N TS ROCK MEDIAN 3.5' DIA. KEY INTO EXIST. BANK (3' MIN.) FILTER FABRIC ABANDONED CHANNEL / EXIS ING 2' MIN. BAN BURY PLUG BELOW CHANNELBED TITLE FIGURE STREAM PLUG DETAIL 19 Organic Debris Removal Standard Operation Procedures (SOP) Emergency Watershed Protection (EWP) Stream Repair Projects Buncombe County, North Carolina SCOPE OF WORK The work shall consist of the cleanup of designated stream areas by the removal and disposal of trees, logs, stumps, brush, tops, rubbish, and other debris deposited in the stream channel and floodplain by the storms of September 8 and 16, 2004. CLEARING AND DEBRIS REMOVAL Debris removal crews shall remove only that material which has been clearly marked by a representative of McDowell County and/or CH2M HILL, INC (Representative) as indicated by flagging and/or orange/red spray paint. ONLY marked debris is to be removed. Representative cannot authorize additional work. Any work that will result in an increase in cost must be submitted to CH2M HILL for approval prior to starting such work. In the event that the contractor uses on-site clopping, the chipper may follow the clean-up crew along the length of the project reach. The Contractor is responsible to properly dispose of chips. Proper disposal may include spreading on site or removing off-site. On-site disposal requires written approval by the property owner. Unless specifically requested to leave the chips in a pile by a property owner the chipper shall make reasonable efforts to spread the chips as clopping progresses. Chippers and other heavy equipment will be staged and used at least 30-feet from the top of the streambank or on existing paved or graveled areas prepared in accordance with standard details described in Figure 18. Repair of any property damage resulting from debris removal is the sole responsibility of the Contractor. Fallen trees, limbs and dislodged brush within the cross section of the existing or original channel up to and including the debris line of the subject storm shall be removed. Any foreign (man-made) debris washed in from upstream, shall be removed. Marked trees severely undercut by stream bank erosion and trees severely leaning over the channel whose near term fall is apparent shall be removed. In general, Contractor clearing will be limited to the cutting of severely damaged trees leaning across the channel, and other trees as needed to gain access for equipment to points of channel blockage. Disturbance of the channel bottom and banks, and equipment access areas shall be held to the minimum necessary to allow the construction equipment to remove the debris and shall be consistent with all state and federal permits. All areas disturbed due to debris removal or equipment access shall be reshaped and reseeded in accordance with standard details described in Figures 7-18. Access to the channel will generally be perpendicular to the channel so cutting of trees is held to a minimum with precaution taken to protect mast producing and stream canopy trees. Un-marked dead trees that provide den habitat and are determined to pose no hazard to the channel shall be protected. As such, the contractor will only remove marked debris. The contractor will exercise care in the areas of existing crops to minimize damages. THE CONTRACTOR WILL BEAR SOLE RESPONSIBILITY FOR SELECTING THE METHOD OF DEBRIS DISPOSAL AND THE PROPER DISPOSAL OF THE DEBRIS. Regardless of the disposal method selected, the contractor is expected to have or obtain knowledge of ALL aspects of the selected disposal method including, but not limited to, associated costs and equipment, and local, State and Federal regulations. The contractor shall obtain ANY and ALL permits for the selected disposal method and bear the cost for the permits. Debris disposal cost shall be included in the Bidders bid. No increase in cost will be permitted should the contractor elect to change method of disposal after the bid is submitted. Bidders are advised that special equipment may be required for off- site burning of debris, including, but not necessarily limited to an air curtain burner. PROVIDED EQUIPMENT & FACILITIES The Contractor shall provide adequate sanitary facilities for equipment operators and work crews. Portable facilities shall be provided at the worksite and arrangements made for proper servicing. A portable facility will be provided within 1,000 feet of the equipment and/or work crews at all times. COMMUNICATIONS Each mechanized piece of equipment and each work crew shall be equipped with a two way, battery operated radio. Radios shall be FM, have a minimum range of 5 miles. Radios shall be maintained "on" and in the receive mode at all times while the operator is at the site. Batteries shall be recharged overnight or as needed. An extra set of fully charged batteries shall be maintained on board the equipment at all times. Radios shall be equipped with clip-on hand mikes or headsets. Radios shall be maintained in good operating condition and equipment operators shall be knowledgeable in the use and care of the radios. Each Contractor site supervisor shall also maintain a secondary communication system compatible with the Representative's system. Brush Removal Guidelines • Small diameter brush and limbs (less than four inches in diameter) that will not cause damage if remobilized by high water will be cut into short lengths (five feet long or less) and left in place. • All marked, dislodged or uprooted larger diameter brush will be removed from the channel or streambank and chipped in designated areas greater than 30-feet from the top of the bank. • Saplings and shrubs with an intact root system are not to be removed. Tree Removal Guidelines • Trees will be chipped in designated areas greater than 30-feet from the top of the streambank. Chippers and/or tub grinders may be staged on-site with written consent from the property owner or at a central location approved by the County. • Larger diameter trees may be pulled to the chipper using a mechanized winch provided the process does not create excess disturbance to the streambank. • Marked trees whose near term fall is apparent should be cut at the marked location, which will be indicated by a painted ring around the trunk at least three- feet above the ground surface. The root system shall not be removed from the streambank. • As approved by the Representative, larger diameter trees that cannot be moved using hand equipment will be cut to manageable lengths and removed. • The sale of chips or firewood is not allowed. Foreign Debris and Trash Removal Guidelines • Foreign (manmade) debris and trash will be bagged in orange trash bags where possible. • Filled trash bags will be removed from the channel and transported directly offsite by the Contractor to the local landfill. • Large debris must be loaded into a dump truck or roll-off container and transported to the local landfill for disposal. • Tipping fees for disposal shall be paid by the Contractor. • Any structural debris to be removed must be separated in the following manner for disposal: a) clean metal (e.g. mobile home frames); appliances (e.g. washer/dryer, a/c, water heater, etc.); and household debris. Clean metal which is deemed 'recyclable' will have no associated tipping fees. Stream Bed and Bank Repair Guidelines 0 All temporary stream crossings shall be installed as described in Figures 15 -18. • All Stream embankments disturbed by Contractor activities, denuded, or left bare as a result of debris removal shall be regraded, planted, and erosion control fabric installed as described in Figures 6, 7, and 9 -12. • Temporary staging, chipping, and work access points shall be regraded and grassed using a native grass/herb mix as outlined in Figures 6, 7, and 16 -18. • Contractor shall install erosion control measures as outlined in Figures 10 -18. SUPERINTENDENCE OF EOUIPMENT AND WORK CREWS Any contractor providing three (3) or more pieces of equipment or five (5) or more work crew or equipment operators shall provide a non-working crew superintendent in addition to the required laborers and operators. The contractor shall designate in writing the names of the crew superintendent and an alternate prior to award of the contract. The crew superintendent shall provide on-site supervision of work crews and equipment operators. The crew superintendent shall be responsible for the safety of work crews and for the location and servicing of portable sanitary facilities. He/she shall be equipped with a portable communication as specified above. The crew superintendent shall communicate with the Representative to assure that work crews and equipment are performing at a satisfactory level. The crew Superintendent shall coordinate with the Representative to schedule equipment and operators for each days work and as far in advance as possible. The superintendent shall be responsible for keeping up with the daily operating times of all work crews and equipment and shall maintain a log of daily equipment and work crew operations. He/she shall coordinate daily with the Representative to concur on actual footage of streambank cleared. WORK DIRECTION Contractors and equipment operators will not perform activities requested or instructed by landowners or others at the worksite, except as confirmed by the assigned Representative. ENVIRONMENTAL CONSIDERATIONS Earth moving equipment will cross and operate in the stream flow only when necessary and only when directed to do so by the Representative. Equipment shall be maintained to prevent fuel, oil and lubricant spills in the vicinity of the stream. Refueling, repairs and lubrication will be performed at safe distances from the stream and only at locations approved by the Representative. Should fuel leaks, oil leakages or hydraulic pipe rupture occur during construction, the operators will immediately remove the equipment to a "safe" area and proceed with repairs. The Representative will direct operators to remove equipment from the stream whenever a leak is observed or suspected. SAFETY Contractor shall be responsible for the safe execution of this work and conform to all applicable state and federal regulations. Additionally, at work sites, where equipment will be operating on public roads, flagmen shall be stationed to warn oncoming traffic of congestion, construction road signs shall be in place and a means of removing sediment, mud or rocks from roadways shall be established. Residue deposited on roadways may be removed by sweep machine, manual sweeping methods or pressurized water. The contractor will be responsible for the implementation of these measures. Chain saw operators will be expected to perform debris removal operations during periods of extreme weather conditions and in areas of deep and fast moving water. The contractor is responsible for providing the necessary equipment, clothing and other gear to insure that laborers can perform effectively and safely under these conditions. The Contractor shall determine if working conditions are hazardous and/or of sufficient extreme to prevent efficient and effective operation. When such conditions exist, the Contractor shall shut down work crews until conditions improve. EQUIPMENT Equipment selection to complete the work is the Contractor's responsibility