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HomeMy WebLinkAbout20071841 Ver 6_401 Application_20160216CLearWaLer ClearWater Environmental Consultants, Inc. February 4, 2016 www.cwenv.com Mr. David Brown US Army Corps of Engineers Asheville Regulatory Field Office 151 Patton Avenue, Room 208 Asheville, North Carolina 28801 Ms. Karen Higgins NC Division of Water Quality 512 N. Salisbury Street, Floor 9 Raleigh, North Carolina 27604 Flo ui, VIV 7— .-, � � U LS rD ia 0 5 2016 RE: Asheville Airport Runway Rehabilitation, Parallel Taxiway, and Cargo Hold Expansion — Modification Request Action ID 2010-00036, DWQ Project #07-1841 Buncombe County, North Carolina Dear Mr. Brown and Ms. Higgins, A permit application requesting written authorization for impacts associated with the Asheville Airport Runway Rehabilitation, Parallel Taxiway, and Cargo Hold Expansion project was submitted by ClearWater Environmental Consultants, Inc. (CEC), on behalf of the Greater Asheville Regional Airport Authority (AVL) in June of 2011. The US Army Corps of Engineers (Corps) issued the requested 404 permit on October 21, 2011 (Attachment A) and the NC Division of Water Resources (DWR) issued the requested 401 Water Quality Certification on October 27, 2011 (Attachment B). The AVL has finalized detailed plans associated with the runway rehabilitation project and due to Federal Aviation Administration (FAA) regulations governing the runway safety area (RSA) additional impacts are required at the southern end of the airport (Figure 1). Culvert Replacement and Extension - FAA design standards state that RSAs must be "cleared and graded, and have no potentially hazardous ruts, humps, depressions, or other surface variations" (AC 150/5300-13A). The length and width of a RSA is determined by the largest Airplane Design Group (ADG) using the airport. At AVL, ADG C -IV (the largest group at AVL) requires a RSA length of 1,000 feet and a width of 500 feet (AC 150/5300-13A). Based on these regulations and placement of stormwater drainage features (discussed further below), the southeastern edge of the RSA is located at the top of the existing stream bank, which provides no additional high ground surface for tie-in grading without impacts to the stream channel. As proposed, the tie-in grading at southeast corner of the RSA crosses the existing culvert and the existing unnamed 32 Clayton Street Asheville, NC 28801 828-698-9800 Tel Modification Request 02/04/2016 Page 2 of 3 tributary to the French Broad River. In order to comply with FAA standards, the AVL would like to request modification of the existing permits to allow for the replacement and lengthening of the existing culvert which would allow for the RSA grading to tie-in to the existing ground surface. The existing 40 -foot culvert would be replaced by a 130 - foot culvert for total new impacts of 90 linear feet (Figure 1, Impact #3). The AVL proposes to pay into the Anderson Farms Stream Mitigation Bank to mitigate for new impacts associated with the culvert replacement and lengthening. The AVL is in the process of reserving credits from the bank and will provide proof of credit availability upon completion of the reservation process. Resizing Sediment Basin D - Additionally, the FAA regulations require RSAs to be "drained by grading or storm sewer to prevent water accumulation" (AC 150/5300-13A). Stormwater from the RSA would be collected and transported to Sediment Basin D for treatment. Due to the increased land area needing collection and treatment, Sediment Basin D would need to be resized. The AVL would like to request modification of the existing permits to allow for approximately 0.03 acre of linear wetland impact associated with proposed modifications to Sediment Basin D (Figure 1, Impact #1). The other basin shown within the RSA is a temporary basin to be used during construction. This basin would be removed and the area regraded after construction of the RSA is complete. The AVL is not proposing mitigation for the proposed wetland impact due to the minor nature of the impact and the overpayment of mitigation for previous projects. The existing permit required 0.9 acre of wetland mitigation for which 1 acre of wetland credit was purchased from the NC Ecosystem Enhancement Program (now DMS). Additionally, 0.25 acre of wetland credit was purchased for 0.15 acre of required wetland mitigation associated with the East Side Improvement project. It is the opinion of AVL and CEC that additional mitigation for wetland impacts associated with this modification should not be required. Stream Stabilization - The unnamed tributary parallel to the southern boundary of the airport is actively eroding, subject to frequent high flows, and lacks stream features that would aid in decreasing stream velocity during high flows. Representative photographs of the stream channel are included for review (Attachment Q. In an effort to protect airport property and prevent further erosion, the AVL is proposing stream bank stabilization along a 1,430 -foot reach of the unnamed tributary (Attachment D). The "upper" reach is approximately 900 linear feet and the "lower" reach is approximately 340 linear feet. Bank treatment in these areas would include bank benching and sloping; installation of rock steps, constructed riffles, and geolifts; and placement of a stone toe. Low growing tree and shrub species would be planted on the banks. Due to the presence of existing utility lines, a stream section between the upper and lower reaches (approximately 190 linear feet) would not the graded; however, vegetation would still be planted in this area. The AVL would be managing vegetation to prevent any obstruction to airport operations; therefore, the AVL would retain the right to trim or cut vegetation as needed. The AVL would like to request modification of the existing permits to allow for the bank stabilization discussed above and illustrated in Attachment D. Modification Request 02/04/2016 Page 3 of 3 In summary, the AVL requests to modify the existing permits as follows: Activity Impacts Stream Wetland Culvert Replacement and Lengthening 90 LF Resizing of Sediment Basin D. 0.03 AC Stream Stabilization 1,430 LF Total 1,520 LF 0.03 AC The applicant respectfully requests that the Corps and DWR modify the previously permitted project to include the proposed activities described above. Please do not hesitate to contact me at 828-698-9800 with any questions or comments concerning this project. Sincerely, Rebekah N. Reid Senior Project Manager R. C ement Riddre, P.W.S. Principal Asheville Airport Runway Rehabilitation, Parallel Taxiway, and Cargo Hold Expansion Modification Permitted Impacts !-•� Action ID SAW -2010-00036 DWR Project No. 07-1841 1,796 linear feet of stream q ' 0.9 acre of wetlands Proposed Modification 90 linear feet of stream (culvert replacement) 1,430 linear feet of stream (bank stabilization) 0.03 acre of wetlands Additional Mitigation Proposed ; 90 linear feet of stream (DMS) C - ` - Zoom Box q � M1 d di' Unnamed Tributary to French Broad River Modificaton Impact #4 Stream Stabilization 90OLF Temporary Sediment Basin j Sediment Basin D O / o i y .%tel L All ell \, Modificaton Impact #1 ti� Modificaton Impact #3 \� q Fill \�"— Existing Culvert 40LF 0.03 ACProposed Culvert 130LF • New Impact 90LF Modificaton Impact #2 St – Stream Stabilization 53 0 LF N r: 'r. .r 0 100 200 400 'Y, Feet Drawn by: RNR 01.28.16; Project# 819 1 � M Legend r. ,r Existing Culvert Stream Proposed Culvert Linear Wetland Proposed SW Pipes Wetland Poly Proposed Contours – – – Airport Property Boundary Buncombe County, CLearWaLer Modification Map North Carolina 32 Clayton Street Figure 1 Asheville, North Carolina 28801 Attachment A US Army Corps of Engineers 404 Permit (dated October 21, 2011) REPLY TO ATIENPION OF: DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS 151 PATTON AVENUE ROOM 208 ASHEVILLE, NORTH CAROLINA 28801-5006 October 21, 2011 Regulatory Division Action ID No.: SAW -2010-00036 Mr. Lew Bleiweis Asheville Regional Airport Authority 61 Terminal Drive, Suite 1 Fletcher, North Carolina 28732 Dear Mr. Bleiweis: In accordance with your written request on June 21, 2011 and the ensuing administrative record, enclosed are two copies of a permit to impact 1,796 linear feet of unnamed tributaries to the French Broad River and 0.9 acre of wetlands for the rehabilitation of the existing runway and construction of a cargo facility at the Asheville Regional Airport. The site is near Old Fanning Bridge Road, off Airport Road/NC Highway 280, Fletcher, Buncombe County, North Carolina. You should acknowledge that you accept the terms and conditions of the enclosed permit by signing and dating each copy in the spaces provided ("Permittee" on page 3). Your signature, as permittee, indicates that, as consideration for the issuance of this permit, you voluntarily accept and agree to comply with all of the terms and conditions of this permit. All pages of both copies of the signed permit with drawings should then be returned to this office for final authorization. A self-addressed envelope is enclosed for your convenience. Title 33, Part 325.1(f), of the Code of Federal Regulations reads, in part, that, "A $10 fee will be charged for permit applications when the work is noncommercial in nature and provides personal benefits that have no connection with a commercial enterprise...", and "A fee of $100 will be charged for permit applications when the planned or ultimate purpose of the project is commercial or industrial in nature and is in support of operations that charge for the production, distribution, or sale of goods or services." As your application fits the latter category, you are requested to remit your check for $100 made payable to the Finance and Accounting Officer, USAED, Wilmington. The check should accompany the signed and dated copies of your pen -nit. This correspondence contains an initial proffered permit for the above described activity. If you object to this decision or the enclosed special conditions you may request that the District Commander reconsider his decision. Enclosed you will find a Notification of Appeal Process (NAP) fact sheet and request for appeal (RFA) form. If you request to appeal this decision you must submit a completed RFA form to the District Commander, Wilmington District Corps of Engineers at the following address: - 2 - Col. Steven A. Baker, District Commander US Army Corps of Engineers, Wilmington District 69 Darlington Avenue Wilmington, North Carolina 28403-1343 In order for an RFA to be accepted by the Corps, the Corps must determine that it is complete; that it meets the criteria for appeal under 33 CFR part 331.5, and that it has been received by the Division Office within 60 days of the date of the NAP. Should you decide to submit an RFA form, it must be received at the above address by December 5, 2011. It is not necessary to submit an RFA form to the Division Office if you do not object to the decision in contained in this correspondence. After the permit is authorized in this office, the original copy will be returned to you; the duplicate copy will be permanently retained in this office. Should you have questions or comments, please contact Tasha McCormick, Asheville Regulatory Field Office, at (828) 271-7980 extension 226. Sincerely, CX Scott Jones, W Chief, Ashevi a Regulatory Field Office Enclosures Copy furnished w/encls: C1earWater Environmental Consultants, Inc. Mr. Clement Riddle 224 south Grove Street, Suite F Hendersonville, North Carolina 28792 DEPARTMENT OF THE ARMY PERMIT Permittee Asheville Regional Airport Authority Permit No. SAW -2010-00036 Issuing Office CESAW-RG-A NOTE: The term "you" and its derivatives, as used in this permit, means the permittee or any future transferee. The term "this office" refers to the appropriate district or division office of the Corps of Engineers having jurisdiction over the permitted activity or the appropriate official of that office acting under the authority of the commanding officer. You are authorized to perform work in accordance with the terms and conditions specified below. Project Description: The permitted is authorized impacts to 1,796 linear feet of unnamed tributaries to the French Broad River and 0.9 acre of wetlands. These impacts are associated with the rehabilitation of the existing runway and construction of a cargo facility at the Asheville Regional Airport. Project Location: The site is located along Old Fanning Bridge Road, off Airport Road/NC Highway 280, Fletcher, Buncombe County, North Carolina. Permit Conditions: General Conditions: 1. The time limit for completing the work authorized ends on December 31, 2016. If you find that you need more time to complete the authorized activity, submit your request for a time extension to this office for consideration at least one month before the above date is reached. 2. You must maintain the activity authorized by this permit in good condition and in conformance with the terms and conditions of this permit. You are not relieved of this requirement if you abandon the permitted activity, although you may make a good faith transfer to a third party in compliance with General Condition 4 below. Should you wish to cease to maintain the authorized activity or should you desire to abandon it without a good faith transfer, you must obtain a modification of this permit from this office, which may require restoration of the area. 3. If you discover any previously unknown historic or archeological remains while accomplishing the activity authorized by this permit, you must immediately notify this office of what you have. found. We will initiate the Federal and state coordination required to determine if the remains warrant a recovery effort or if the site is eligible for listing in the National Register of Historic Places. ENG FORM 1721, Nov 86 EDITION OF SEP 82 IS OBSOLETE. (33 CFR 325 (Appendix A)) 4. If you sell the property associated with this permit, you must obtain the signature of the new owner in the space provided and forward a copy of the permit to this office to validate the transfer of this authorization. 5. If a conditioned water quality certification has been issued for your project, you must comply with the conditions specified in the certification as special conditions to this permit. For your convenience, a copy of the certification is attached if it contains such conditions. 6. You must allow representatives from this office to inspect the authorized activity at any time deemed necessary to ensure that it is being or has been accomplished in accordance with the terms and conditions of your permit, Special Conditions: SEE ATTACHED SPECIAL CONDITIONS Further Information: 1. Congressional Authorities: You have been authorized to undertake the activity described above pursuant to: ( ) Section 10 of the Rivers and Harbors Act of 1899 (33 U.S.C. 403). (X) Section 404 of the Clean Water Act (33 U.S.C. 1344). ( ) Section 103 of the Marine Protection, Research and Sanctuaries Act of 1972 (33 U.S.C. 1413). 2. Limits of this authorization. a. This permit does not obviate the need to obtain other Federal, state, or local authorizations required by law. b. This permit does not grant any property rights or exclusive privileges. c. This permit does not authorize any injury to the property or rights of others. d. This permit does not authorize interference with any existing or proposed Federal project. 3. Limits of Federal Liability. In issuing this permit, the Federal Government does not assume any liability for the following: a. Damages to the permitted project or uses thereof as a result of other permitted or unpermitted activities or from natural causes. b. Damages to the permitted project or uses thereof as a result of current or future activities undertaken by or on behalf of the United States in the public interest. c. Damages to persons, property, or to other permitted or unpermitted activities or structures caused by the activity authorized by this permit. d. Design or construction deficiencies associated with the permitted work. e. Damage claims associated with any future modification, suspension, or revocation of this permit. 0a 4. Reliance on Applicant's Data: The determination of this office that issuance of this permit is not contrary to the public interest was made in reliance on the information you provided. 5. Reevaluation of Permit Decision. This office may reevaluate its decision on this permit at any time the circumstances warrant. Circumstances that could require a reevaluation include, but are not limited to, the following: a. You fail to comply with the terms and conditions of this permit. b. The information provided by you in support of your permit application proves to have been false, incomplete, or inaccurate (See 4 above). c. Significant new information surfaces which this office did not consider in reaching the original public interest decision. Such a reevaluation may result in a determination that it is appropriate to use the suspension, modification, and revocation procedures contained in 33 CFR 325.7 or enforcement procedures such as those contained in 33 CFR 326.4 and 326.5. The referenced enforcement procedures provide for the issuance of an administrative order requiring you to comply with the terms and conditions of your permit and for the initiation of legal action where appropriate. You will be required to pay for any corrective measures ordered by this office, and if you fail to comply with such directive, this office may in certain situations (such as those specified in 33 CFR 209.170) accomplish the corrective measures by contract or otherwise and bill you for the cost. 6. Extensions. General condition 1 establishes a time limit for the completion of the activity authorized by this permit, Unless there are circumstances requiring either a prompt completion of the authorized activity or a reevaluation of the public interest decision, the Corps will normally give favorable consideration to a request for an extension of this time limit. Your signature below, as permittee, indicates that you accept and agree to comply with the terms and conditions of this permit. (PERMITTEE) ASHEVILLE REGIONAL AIRPORT (DATE) AUTHORITY This permit becomes effective when the Federal official, designated to act for the Secretary of the Army, has signed below. (DISTRICT COMMANDER) STEVEN A. BAKER (DATE) COLONEL When the structures or work authorized by this permit are still in existence at the time the property is transferred, the terms and conditions of this permit will continue to be binding on the new owner(s) of the property. To validate the transfer of this permit and the associated liabilities associated with compliance with its terms and conditions, have the transferee sign and date below. (TRANSFEREE) (DATE) *U.S. GOVERNMENT PRINTING OFFICE: 1986 - 717425 SPECIAL CONDITIONS SAW -2010-00036 1. All work authorized by this permit must be performed in strict compliance with the attached plans, which are a part of this permit. Any modification to these plans must be approved by the US Army Corps of Engineers (USACE) prior to implementation. 2. Except as authorized by this permit or any USACE approved modification to this permit, no excavation, fill or mechanized land -clearing activities shall take place at any time in the construction or maintenance of this project, within waters or wetlands. This permit does not authorize temporary placement or double handling of excavated or fill material within waters or wetlands outside the permitted area. This prohibition applies to all borrow and fill activities connected with this project. 3. Except as specified in the plans attached to this permit, no excavation, fill or mechanized land - clearing activities shall take place at any time in the construction or maintenance of this project, in such a manner as to impair normal flows and circulation patterns within waters or wetlands or to reduce the reach of waters or wetlands. 4. The North Carolina Division of Water Quality has issued a conditioned Water Quality Certification for your project; the conditions of that certification are hereby incorporated as special conditions of this permit. For your convenience, a copy of the certification is attached if it contains such conditions. 5. All mechanized equipment will be regularly inspected and maintained to prevent contamination of waters and wetlands from fuels, lubricants, hydraulic fluids, or other toxic materials. In the event of a spill of petroleum products or any other hazardous waste, the permittee shall immediately report it to the N.C. Division of Water Quality at (919) 733-5083, Ext. 526 or (800) 662-7956 and provisions of the North Carolina Oil Pollution and Hazardous Substances Control Act will be followed. 6. The permittee shall advise the Corps in writing prior to beginning the work authorized by this permit and again upon completion of the work authorized by this permit. 7. Unless otherwise authorized by this permit, all fill material placed in waters or wetlands will be generated from an upland source and will be clean and free of any pollutants except in trace quantities. Metal products, organic materials (including debris from land clearing activities), or unsightly debris will not be used. The permittee shall require its contractors and/or agents to comply with the terms and conditions of this permit in the construction and maintenance of this project, and shall provide each of its contractors and/or agents associated with the construction or maintenance of this project with a copy of this permit. A copy of this permit, including all conditions, shall be available at the project site during construction and maintenance of this project. 9. The permittee shall employ all sedimentation and erosion control measures necessary to prevent an increase in sedimentation or turbidity within waters and wetlands outside the permit area. This shall include, but is not limited to, the immediate installation of silt fencing or similar appropriate devices around all areas subject to soil disturbance or the movement of earthen fill, and the immediate stabilization of all disturbed areas. Additionally, the project must remain in full compliance with all aspects of the Sedimentation Pollution Control Act of 1973 (North Carolina General Statutes Chapter 113A Article 4). 10. The permittee, upon receipt of a notice of revocation of this permit or upon its expiration before completion of the work will, without expense to the United States and in such time and manner as the Secretary of the Army or his authorized representative may direct, restore the water or wetland to its pre -project. condition. 11. Violations of these conditions or violations of Section 404 of the Clean Water Act or Section 10 of the Rivers and Harbors Act must be reported in writing to the Wilmington District U.S. Army Corps of Engineers within 24 hours of the permittee's discovery of the violation. 12. In order to compensate for impacts to 0.9 acre of wetlands and 1,796 linear feet of stream channel, the permittee shall make payment to the North Carolina Ecosystem Enhancement Program (NCEEP) in the amount determined by the NCEEP, sufficient to perform the restoration of 0.9 acres of Riparian Headwater Forest and 1,796 linear feet of cool water stream channel in the French Broad River Basin, Cataloging Unit 06010105. The permittee will pay into EEP in phases. Phase 1 will include mitigation for 1,225 linear feet of stream impacts for the cargo area and associated infrastructure (to take place immediately after permit issuance) and Phase 2 will include mitigation for 571 linear feet of stream impacts and 0.9 acre of wetland impacts associated with rehabilitation of the existing runway (estimated to begin in 2013). Prior to impacts occurring in Phase 2, the permittee will provide an updated acceptance letter to the Corps. Construction within jurisdictional areas on the property shall begin only after the permittee has made payment to the NCEEP and provided a copy of the payment documentation to the Corps, and the NCEEP has provided written confirmation to the Corps that it agrees to accept responsibility for the mitigation work required, in compliance with the NCEEP In -Lieu Fee Instrument, approved by the United States Army Corps of Engineers, Wilmington District on July, 28, 2010. 13. The permittee will maintain the authorized work in good condition and in conformance with the terms and conditions of this permit. The permittee is not relieved of this requirement if he abandons the permitted ,activity without having it transferred to a third party. 14. If concrete is used during culvert installation (headwalls), a dry work area must be maintained to prevent direct contact between curing concrete and stream water. Uncured concrete affects water quality and is highly toxic to fish and other aquatic organisms. 15. For construction of culverts, measures will be included in the construction that will promote the safe passage of fish and other aquatic organisms. For all culvert construction activities, the dimension, pattern, and profile of the stream, (above and below a pipe or culvert), should not be modified by widening the stream channel or by reducing the depth of the stream. Culvert inverts - 2 - will be buried at least one foot below the bed of the stream for culverts greater than 48 inches in diameter. For culverts 48 inches in diameter or smaller, culverts must be buried below the bed of the stream to a depth equal to or greater than 20 percent of the diameter of the culvert. 16. If the permittee discovers any previously unknown historic or archeological remains while accomplishing the authorized work, he will immediately notify the Wilmington District Engineer who will initiate the required State/Federal coordination. 17. This Department of the Army permit does not obviate the need to obtain other Federal, State, or local authorizations required by law. - 3 - Attachment B NC Division of Water Resource Water Quality Certification (dated October 27, 2011) A�� NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary October 27, 2011 Mr. Lew Bleiweis, Airport Director Asheville Regional Airport Authority 61 Terminal Drive, Suite 1 Fletcher, NC 28732 Re: Asheville Airport Runway Rehabilitation Parallel Taxiway and Cargo Hold Expansion (West) Buncombe County DWQ #20071841, Ver. 4; USACE Action ID. No. SAW -2010-00036 Ut to French Broad River [040302, 6-(54.5), B] APPROVAL of 401 Water Quality Certification with Additional Conditions-REVISED4 Dear Mr. Bleiweis: Attached hereto is a copy of Certification No. 3753 issued to Mr. Lew Bleiweis and Asheville Regional Airport Authority, dated October 27, 2011. This Certification replaces the Certification issued to you on October 13, 2011. In addition, you should get any other federal, state or local permits before you go ahead with your project including (but not limited to) Solid Waste, Sediment and Erosion Control, Stormwater, Dam Safety, Non -discharge and Water Supply Watershed regulations. If we can be of further assistance, do not hesitate to contact us. Sincerely, C leen H. Sullins CHS/kah/gym Attachments: Certificate of Completion - NCDWQ 401 WQC Summary of Permanent Impacts and Mitigation Requirements cc: Becky Fox, EPA, 1307 Firefly Road, Whittier, NC 28789 U.S. Army Corps of Engineers, Asheville Regulatory Field Office, Wilmington District, USACOE Chuck Cranford, DWQ Asheville Regional Office DLR Asheville Regional Office File Copy Clement Riddle, CEC, 224 South Grove Street, Suite f, Hendersonville, NC 28792 Filename: 07184 I Ver4AshevillcAirportRumvayRehabiliiationParal lelTaxiwayAndCargoi luldExpansion_Nest(Bunconmbe)401_IC_I2evised4 Wetlands, Buffers, Stormwater, Compliance and Permitting Unit (WeBSCaPe) 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 Phone: 919-807-63001 FAX 919807-6494 Internet: hup:I/porla1mcdem org/weblwq/ws An Equal Opportunity 1 Affirmative Action Employe, Mr. Lew Bleiweis and Asheville Regional Airport Authority Page 2 of 6 October 27, 2011 NORTH CAROLINA 401 WATER QUALITY CERTIFICATION THIS CERTIFICATION is issued in conformity with the requirements of Section 401 Public Laws 92- 500 and 95-217 of the United States and subject to the North Carolina Division of Water Quality (DWQ) Regulations in 15 NCAC 21-1, Section .0500 to Mr. Lew Bleiweis and Asheville Regional Airport Authority, have permission to fill or otherwise impact 0.9 acres of 404/wetland and 1,796 linear feet of stream, to construct the proposed Asheville Regional Airport expansion, which is located at 61 Terminal Drive, in Fletcher, Buncombe County, North Carolina, pursuant to an application dated June 8, 2011, and received by the DWQ on June 14, 2011, and by Public Notice issued by the USACE on June 24, 2011, and received by the DWQ on June 24, 2011, and by additional information received on August -30, 2011, and September 15, 2011. The application and supporting documentation provides adequate assurance that the proposed work will not result in a violation of applicable Water Quality Standards and discharge guidelines. Therefore, the State of North Carolina certifies that this activity will not violate the applicable portions of Sections 301, 302, 303, 306, 307 of PL 92-500 and PL 95-217 if conducted in accordance with the application, the supporting documentation, and conditions hereinafter set forth. This approval is for the purpose and design submitted in the application materials and as described in the Public Notice. If the project is changed, prior to notification a new application for a new Certification is required. If the property is sold, the new owner must be given a copy of the Certification and approval letter and is thereby responsible for complying with all conditions of this Certification. Any new owner must notify the Division and request the Certification be issued in their name. Should wetland or stream fill be requested in the future, additional compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h) (6) and (7). If any plan revisions from the approved site plan result in a change in stream or wetland impact or an increase in impervious surfaces, the DWQ shall be notified in writing and a new application for 401 Certification may be required. For this approval to be valid, compliance with the conditions listed below is required. Conditions of Certification: 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 to wetlands, streams, and/or buffers, are approved including incidental impacts: Type of Impact Amount Approved Units Plan_ Location or Reference 404/Wetland 0.9 (acres) Application Stream 1,796 (linear feet) Application Sediment and Erosion Control: 2. Erosion and sediment control practices must be in fill] 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, ope-ated, and maintained in accordance with the most recent version of the North Carolina Sed: men: and Erosio)i Con. rol Planning and ')esign Manic d. Mr. Lew Bleiweis and Asheville Regional Airport Authority Page 3 of 6 October 27, 2011 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 Conlrol Manual. Tile 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. Sufficient materials required for stabilization and/or repair of erosion control measures and stormwater routing and treatment shall be on site at all times. 3. 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 404/401 Permit Application. 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; Sediment and erosion control measures shall not be placed in wetlands or waters without prior approval from the Division. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, design and placement of temporary erosion control measures shall not be conducted in a manner that may result in dis-equilibrium of wetlands or stream beds or banks, adjacent to or upstream and down stream of the above structures. All sediment and erosion control devices shall be removed and the natural grade restored within two (2) months of the date that the Division of Land Resources or locally delegated program has released the project; 5. Protective Fencing - The outside buffer, wetland or water boundary and along the construction corridor within these boundaries approved under this authorization shall be clearly marked with orange warning fencing (or similar high visibility material) for the areas that have been approved to infringe within the buffer, wetland or water prior to any land disturbing activities; Continuing Compliance: Mr. Lew Bleiweis and Asheville Regional Airport Authority shall conduct construction activities in a manner consistent with State water quality standards (including any requirements resulting from compliance with section 303(d) of the Clean Water Act) and any other appropriate requirements of State law and federal law. If the Division determines that such standards or laws are not being met (including the failure to sustain a designated or achieved use) or that State or federal law is being violated, or that further conditions are necessary to assure compliance, the Division may reevaluate and modify this Certification to include conditions appropriate to assure compliance with such standards and requirements in accordance with 15A NCAC 2H.0507(d). Before modifying the Certification, the Division shall notify Mr. Lew Bleiweis and Asheville Regional Airport Authority, and the US Army Corps of Engineers, provide public notice in accordance with 15A NCAC 21-1.0503 and provide opportunity for public hearing in accordance with 15A NCAC 21-1.0504. Any new or revised conditions shall be provided to Mr. Lew Bleiweis and Asheville Regional Airport Authority in writing; shall be provided to the United States Army Corps of Engineers for reference in any Permit issued pursuant to Section 404 of the Clean Water Act, and shall also become conditions of the 404 Permit for the project; Miti .,lion: 7. Compensatory Mitigation Using the Ecosystem Enhancement Program (EEP) Mitigation must be provided for the proposed impacts as specified in the table below. We understand that you wi;h to make a pays-ent to the Wetlanfas Restoration Fun I administered by the Nc I . osystem Enhrmce,nent Progran; (FT 11) to meet this mi igation requi erne it. This has Mr. Lew Bleiweis and Asheville Regional Airport Authority Page 4 of 6 October 27, 2011 been determined by the DWQ to be a suitable method to meet the mitigation requirement. Until the EEP receives and clears your check (made payable to: DEN — Ecosystem Enhancement Program Office), no impacts specified in this Authorization Certificate shall occur. The EEP should be contacted at (919) 716-1921 if you have any questions concerning payment into a restoration fund. The mitigation will be phased as shown in the table below: TVpe of Wetland Compensatory Mitigation Required River and Sub -basin Number Phase #1 — Caro Area 404/Wetlands — riparian 0 (acres) French Broad/06010105 Stream (perennial) 1,225 (linear feet) French Broad/06010105 Phase #2 — Parallel Taxiwa 404/Wetlands — riparian 1.259 [(acres) 0.359 acres was mitigated for in Version 1, therefore 0.9 acres is required] French Broad/060 t0105 Stream (perennial) 571 (linear feet) French Broad/06010105 8. Construction Stormwater Permit NCG010000 Upon the approval of an Erosion and Sedimentation Control Plan issued by the Division of Land Resources (DLR) or a DLR delegated local erosion and sedimentation control program, an NPDES General stormwater permit (NCGO10000) administered by DWQ is automatically issued to the project. This General Permit allows stormwater to be discharged during land disturbing construction activities as stipulated by conditions in the permit. If your project is covered by this permit [applicable to construction projects that disturb one (1) or more acres], full compliance with permit conditions including the sedimentation control plan, self-monitoring, record keeping and reporting requirements are required. A copy of this permit and monitoring report forms may be found at: http•//portal ncdenr org/c/document library/Qetfle?uuid=d15e7ee8-cb50-443f- 9dcf 049b001337ac&gr, oupld=38364 ; 9. Culvert Installation All work in or adjacent to stream waters shall be conducted in a dry work area. Approved BMP measures from the most current version of NCDOT Construction, and Maintenance Activities manual (http://www.ncdot.orWdoh/operations/BMP manual/download/BMP Manual.pdf) such as sandbags, rock berms, cofferdams and other diversion structures shall be used to prevent excavation in flowing water. Culverts required for this project shall be installed in such a manner that the original stream profiles are not altered. Existing stream dimensions (including the cross section dimensions, pattern, and longitudinal profile) must be maintained above and below locations of each culvert. Culverts shall be designed and installed to allow for aquatic life movement as well as to prevent head cutting of the streams. If any of the existing pipes are or become perched, the appropriate stream grade shall be re-established or, if the pipes installed in a perched manner, the pipes shall be removed and re- installed correctly. Culverts) shall not be installed in such a manner that will cause agnradation or erosion of the stream tip or down stream of the culvert(s). Existing stream dimensions (including the cross section dimensions, pattern and longitudinal profile) shall be maintained above and below locations of each culvert. Placement of culverts and other structures in waters, stri.:ams, and wetland; must be placed below ilie el, vation of the sire: 3nbed by one foot For all culvers wi''.t a diameter ;reat.:r than 48 inc hes. Mr. Lew Bleiweis and Asheville Regional Airport Authority Page 5 of 6 October 27, 2011 and 20 percent of the culvert diameter for culverts having a diameter less than 48 inches, to allow low flow passage of water and aquatic life. Design and placement of culverts and other structures including temporary erosion control measures shall not be conducted in a manner that may result in dis-equilibrium of wetlands or streambeds or banks, adjacent to or upstream and down stream of the above structures. The applicant is required to provide evidence that the equilibrium shall be maintained if requested in writing by DWQ. The establishment of native, woody vegetation and other soft stream bank stabilization techniques must be used where practicable instead of rip rap or other bank hardening methods. If rip -rap is necessary, it shall not be placed in the stream bed, unless specifically approved by the Division of Water Quality. Installation of culverts in wetlands must ensure continuity of water movement and be designed to adequately accommodate high water or flood conditions. Upon completion of the project, the Applicant shall complete and return the enclosed "Certificate of Completion" form to notify NCDWQ when all work included in the §401 Certification has been completed: The responsible party shall complete the attached form and return it to the 401/Wetlands Unit of the NC Division of Water Qualityupon completion of the project. Please send pholographs upstream and downstream of each culvert site to document correct installation along with the Certificate of Completion form. 10. Deed Notifications Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands, waters and protective buffers in order to assure compliance for future wetland, water and buffer impact. These mechanisms shall be put in place at the time of recording of the property, or of individual lots, whichever is appropriate. A sample deed notification can be downloaded from the 401/Wetlands Unit web site at: http://portal ncdenr orglc/document libra!y/get file?uuid=ef84d0el-5fc9-4183-87b5- 2f9d7eb152e0&Igroupld=38364. The text of the sample deed notification may be modified as appropriate to suit to this project. 11. Stormwater Management Before any permanent impervious surface (i.e., building, roadway, taxiway, tarmac or other similar surface) is installed as part of any phase of the project described in this certification, the applicant must meet all of the following: The Stormwater Management Plan (SMP) must be approved in writing by the City of Asheville. A copy of the approval letter and approved SMP must be submitted to the Division prior to installation of any impervious surface within the project site. If the project is phased, then the approved SMP for each phase must be submitted to the Division prior to installation of any impervious surfaces associated with that phase. The approved stormwater best management practices (BMPs) must be constructed and operational before any permanent bui ding or other structure is occupied or becomes operational. if the project is phased, then the approved BMPs for each future phase must be constructed and operational before any permanent building or other structure associated with that phase is occupied or becomes operational. The approved SMP, phased or otherwise, as well as drainage patterns must be maintained in perpetuity. Mr. Lew Bleiweis and Asheville Regional Airport Authority Page 6 of 6 October 27, 2011 The SMP may not be modified without prior written authorization frau the SMP approval authority. 12. 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 Wetlands, Buffers, Stormwater, Compliance and Permitting Unit (WeBSCaPe), North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. 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. If this Certification is unacceptable to you, you have the right to an adjudicatory hearing upon written request within sixty (60) days following receipt of this Certification. This request must be in the form of a written petition conforming to Chapter 150B of the North Carolina General Statutes and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. if modifications are made to an original Certification, you have the right to an adjudicatory hearing on the modifications upon written request within sixty (60) days following receipt of the Certification. Unless such demands are made, this Certification shall be final and binding. This the 27'h dayof Otobe DIVO IT Y 4 Coleen H. Sullins 3753 CHS/kah/jm Aji= NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee SecretaFreemary Governor Director North Carolina Division of Water Quality 401 Water Quality Certification Summary of Permitted Impacts and Mitigation Requirements In accordance with 15A NCAC 2H.0500, Mr. Lew Bleiweis and Asheville Regional Airport Authority, have permission to fill or otherwise impact 0.9 acres of 404/wetland and 1,796 linear feet of stream, to construct the proposed Asheville Regional Airport expansion, which is located at 61 Terminal Drive, in Fletcher, Buncombe County, North Carolina. All activities associated with these authorized impacts must be conducted with the conditions listed in the attached Permit transmittal letter. THIS CERTIFICATION IS NOT VALID WITHOUT THE ATTACHMENTS. COMPENSATORY MITIGATION REQUIREMENTS, ECOSYSTEM ENHANCEMENT PROGRAM DWQ PROJECT #: 20071841, Ver. 4 NC EEP NAME: Asheville Airport Expansion LOCATION: Asheville COUNTY: Buncombe BASIN/ SUB BASIN: French Broad/06010105 As required by 15A NCAC 2H.0500, and the conditions of this Certification, you are required to compensate for the above mitigable impacts through the restoration, creation, enhancement or preservation of wetlands, surface waters and riparian buffers as outlined below prior to conducting any activities that impact or degrade the waters of the state. Note: Acreage requirements proposed to be mitigated through the Ecosystem Enhancement Program must be rounded to one-quarter acre increments and linear foot requirements must be rounded up" to the nearest foot according to 15 2R.0503(b). Impacts Mitigation 0.9 Acres Riparian Wetlands 1.259 Acres Riparian Wetlands (0.359 acres were mitigated for in Version 1, therefore 0.9 acres is required) 1,796 Linear Feet of Stream 1,796 Linear Feet of Stream One of the options you have available to satisfy the compensatory mitigation requirement is through the payment of a fee to the Wetlands Restoration Fund per NCAC 2R.0503. if you choose this option, please sign this form and mail the form along with a copy of your 401 Certification or Buffer Approval to the Ecosystem Enhancement Program at the address below. An invoice for the appropriate amount of payment will be sent to you upon receipt of this form. PLEASE NOTE, THE ABOVE IMPACTS ARE NOT AUTHORIZED UNTIL YOU RECEIVE NOTIFICATION THAT YOUR PAYMENT HAS BEEN PROCESSED BY THE ECOSYTEM' ENHANCMENT PROGRAM. Signature Date ECOSYSTEM ENHANCEMENT PROGRAM 1652 Mail Service Center RALEIGH, N.C. 27699-1652 (919) 715-2219 rilenaIII c: 071841 Ver4AsheviIleAirportRumvayRehabititntion ParallelTaxiwayAndl'nrgoF1oldGxpansion_West(Buncombe)40I IC—L F 11 _-Revised2 Wetlands, Butters, Slonnwater, Compliance and Permitting Unit (WeBSCaPe) 1650 Mail Service Center, Raleigh, North Carolina 77699-1650 Phone 919-807-63011 FAX: 919-807-6494 Internet. http:l/poilaLncdenr.org/weblwglws An Fgwl Opporlunity 1 Affirmative Aclion Employer Attachment C Representative Photograph r e� ! '� ` •u'�1'�Y Attachment D Stream Stabilization Plans d t f� A'ville aunt. rech � •., ,� OSP a j.—i Hlu Acton r . WpP •a�" S �tk. Af ���:. Y _Me0•I Rp^.Comm '��FAr } t, 74 `�• "�"� VillarA e°•f S ■ and ® '�.wNc a ®: i Hill to Farmws ovv 4A fipmsny '�� MorkH Biltmore N(�—/��� �o � �' j,l House■ �:.�/ '.r y Reynolds 112; Cc- s wBusbee Res. vlU��o Biltmore o0 �. * s ailrmore Forest i YO �� O PISGAH 191ti AEstafe a Branch f.NT }` "o Valley ; eo. Springs , '� sI 5A NAT'L rrCf ,oA, o ~ o oro 116® Lake �oMcoRa _A a s RD=1� k land '- f O ; West Heave Julian c> Avery Cr� e o /� TtRRA c o Ppy P 6,�°• P; }o Pp�o'.E Arden P — 4 FOREST ? CO. Oa ark rE /•i. Fti� `SO RN _elfSCO. aj / �• I k g:on 1 t r \, 4a :M \}. •�./ A•ptpGE / �`, ANoC'A}Oc Ro. etchefR ! 'Po - How's As' PROJECT SITE 011; �-�� •° Vicinity Map Not to Scale BEFORE YOU DIG! CALL 1-800-632-4949 N.C. ONE -CALL CENTER IT'S THE LAW! Stream Stabilization Buncombe County, North Carolina FINAL FOR CONSTRUCTION PLANS ISSUED FEBRUARY 02, 2016 Sheet Index Title Sheet 0.1 Quantity Estimates and Symbols 0.2 Project Overview 0.3 Typical Sections 1.1 Cross Sections 1.2-1.3 Stream Plan & Profile 2.1-2.4 Details 3.1-3.2 Project Directory Engineering: Wildlands Engineering, Inc License No. F-0831 167-B Haywood Rd Asheville, NC 28806 Jake McLean, PE, CFM 828-774-5547 Owner: Asheville Regional Airport Z Quantities Upper Reach Lower Reach fTEM UPPER QTY UNIT Mob, 1, zati on 1 LS Survey La out 1 LS Construction Entrance 50 LF Herbic-:' de Treatment 125 STEM Grading 1 LS Mi sc. Class A Stone 20 TON Mi sc. Class B Stone 20 TON Misc. Class 1 Stone (Stone Toe) 230 TON Rock Step 7 EA Constructed Riffles (Class I Mix) 302 LF Geolifts 460 LF Water Diversion 1 LS Erosion Control (Coir) Malting 1820 SY Si It Fence 1200 LF Temporary Seed! ng 5382 SY Permanent Seedi ng, Riparian Buffer 1593 SY Permanent Seeding, Stabilization Mlx 3789 SY Li ,e St. kes 870 STEM Bare Root Seed Iings 700 EA Existing Features Existing Property Line REM LOWER QTY UNIT Mobilization 1 LS Survey Layout 1 LS Construction Entrance 0 LF Herbicide Treatment 175 STEM Grading 1 LS Misc. Class AStone 20 TON Misc. Class B Stone 20 TON Misc.Class I Stone(Stone7oe) 100 TON Rock Step 5 EA Constructed Riffles (Class I Mix) 153 LF Geolifts 250 LF Water Diversion 1 LS Erosion Control (Coir) Matting 610 SY Silt Fence 744 LF Temporary Seedirg 1960 SY Permanent Seedirg, Riparian Buffer 467 SY Permanent Seeding, Stabilization Mix 1493 SY Live Stakes 676 STEM Bare Root Seedl l ngs 450 EA — Right of Way -- 100 Existing Major Contour (5' Interval). (contour labels not shown on overview sheets) Existing Minor Contour (contour labels may be shown in flatter areas) --- Te ----- TB --- Existing Top of Terrace Existing Overhead Electric Existing Thalweg Alignment Existing Fence Existing Power Pole Existing Water Line Existing Gas Line Existing Sewer Line Existing Utilities Work Associated With Culvert Installation ITEM QTY UNR Mobilization 1 LS Existing Culvertand Headwall Removal 1 LS Channel Grading (Approx. 20fUpstream and Culvert)Downstream of Culvert) 1 LS MiscClass 1Stone(Stone Tuel 10 TUN Culvertand Headwall Construction(includes 3ackfill and Grading) I LS Culvert and Headwall Design I LS Grading Cut and Fill Estimates Reach Cut (Soil Export) (cu. Yds) Upper 3,100 Lower 950 Total 4,050 Proposed Features 10.00 --� - Proposed Centerline Alignment --0 Proposed Top of Terrace With Existing Grade Tie-in Circle B B Proposed Back of Bench — — — Proposed Front of Bench Proposed Rock Step (see Detail 1/3.1) 0000000 Proposed Stone Toe 0 00n(see Detail 2/3.1) Proposed Constructed Riffle (see Detail 3/3.1) Proposed Geolift (see Detail 4/3.1) Proposed Ramp to Access Stream Bench tD mss,„rrnpr ~ O Ila Ls rho ti �N eeVVV O 1.2 Za�ego Fill (Soil Import) Net � j $-;,1 ^mZ. (cu. Yds) (cu. Yds) Z _ - m $ v ai;md-. 1,400 1,700 cut : z Q LL E J 75 875 cut 1,475 2,575 cut tD mss,„rrnpr ~ O Ila Ls rho ti �N eeVVV O 1.2 PROPOSED TOP OF TERRRACE PROPOSED BACK OF BENCH EXISTING GATE, rr<vry i yr t�trv�n CONSTRUCTION ACCESS POINT 1' 20+00 0 GRADE MOWING ACCESS START OF PROJECT, "UPPER" REACH STATION 20+61' „gym ,rads NOO � N �V PRO�E i i sl / l• /ate . tea••• �"\" •'I. FENCE TO BE REMOVED \ N. N. cs • �. EXISTING ti �� - mss•` ,`� \ �,.. �` ,•�e � ��•-A".. � WHERE NOT GRADINGFNCh � � ... � � -c\�` .� _' • • �, Z •=! TERRACE (TYP) VFR �., „g � ,,,' ` •... cb , FENCE TO BE��• ` `�• REMOVED , CULVERT BID ITEM SEE SECTIONS SHEETS _ SEE QUANTITY ?. _1 1.2-1.3 FOR BANK AND ESTIMATES AND BED TREATMENTS (TYP) SYMBOLS (SHEET 0.2) FOR DETAILS 00 00 ♦ • .•'0IAI 00 0010 00 00 00 00 GRADE ACCES � UTILITY POLE TO BE RELOCATED j�/• � VEG. MGMT. ZONED�6)o END "UPPER" REACH PROPOSED STORM PIPE �, v 0 , �J SYSTEM AND RUNWAY 1A GRADING (5i -CONTOURS) � NO GRADING TO BE CONDUCTED FROM STATION 29+65' TO STATION 31+50' VEGETATION MGMT. ZONES STILL APPLY � r ♦ � a' 100 ♦ so' 150 /l yNAVIGATION AND UTILITIES TO BE RELOCATED REACH RESUME BANK AND TERRACE GRADING 1 11 1,00 0 END OF PROJECT '•, \ STATION 34+91' zsry�mLL z umd y?�Q�LLe END OF PROJECT '•, \ STATION 34+91' zsry�mLL z umd y?�Q�LLe VEGETATION MANAGEMENT ZONES: A. REGRADED BANKS (RIGHT OR LEFT SIDE OF STREAM) - PLANT STABILIZATION SEEDING 5/3.2, AND LOW GROWING TREES AND SHRUBS PER PLANTING SCHEDULE 6/3.2 (MOWED AND MAINTAINED AS NECESSARY) B. MOW ZONE: PLANTED RIPARIAN SEEDING, 4/3.2 C. LIVESTAKE WITH LOW GROWING SPECIES PER 9/3.2, APPLY RIPARIAN SEEDING C2. LIVESTAKES ONLY WHEN STONE TOE IS APPLIED D. IDENTIFY, CUT AND TREAT WITH HERBICIDE TALL TREE SPECIES, PLANT LOW GROWING TREES AND SHRUBS PER PLANTING SCHEDULE 6/3.2 EXISTING GRADE] PROPOSED EROSI CONTROL MATTI PROPOSED GR ABOVE CULVE PROPOSED STREAM GRADE AT ENTRANCE OF CULVERTS PROPOSED DOUBLE CULVERT INVERTS TO BE BURIED 1' BELOW PROPOSED STREAM GRADE EXISTING GRADE Culvert Section Upstream of Existing Culvert (looking downstream) SCALE 1" =10' EXISTING STREAM GRADEEXISTING GRADE AT EXIT OF CULVERTS OVER EXISTING CULVERTS ------------ PROPOSED STREAM GRADE AT EXIT OF PROPOSED DOUBLE CULVERT CULVERTS INVERTS TO BE BURIED 1' BELOW PROPOSED STREAM GRADE Culvert Section at Existing Culvert (looking downstream) SCALE 1" =10' EXISTING GRADE PROPOSED TOP OF VEGETATION MANAGEMENT ZONES 0' 5' 10' 1. VARIES. GRADED AT 2:1 SLOPE UNTIL TIE IN 18.00' WITH EXISTING GRADE (MIN 16.00') -------------------------- PROPOSED ------------ - PROPOSED GRADE PROPOSED BACK OF BENCH PROPOSED BANKFULL (FRONT OF BENCH) A B VEGETATION MANAGEMENT ZONES Typical Section: Riffle (looking downstream) SCALE 1" =10't STA 20+10' ,VARIES.'GRADED AT Typical Section: Step/Structure Pool (looking downstream) SCALE 1" =10't PROPOSED ti VARIES ACCORDING TO PLANS SEE PLAN VIEW FOR AREAS WHERE RIGHT BANK GRADING IS PROPOSED (VEG MGMT ZONE A) OTHERWISE, NO GRADING RIGHT BANK (ZONE D) u FOR CHANNEL BANKS, SEE TREATMENT BASED ON PLAN VIEW NOTES AND CROSS SECTION SHEETS 2.2-2.3 (SAME FOR POOL) BOTTOM WIDTH MAY VARY V-2' DEPENDING ON TIE-IN WITH RIGHT BANK SEE PLAN VIEW FOR AREAS WHERE RIGHT BANK GRADING IS PROPOSED (VEG MGMT ZONE A) OTHERWISE, NO GRADING RIGHT BANK (ZONE D) POOL DEPTH AS DEEP AS EXISTING, UP TO 6.0' MAX, ARMOR WITH CLASS I STONE WHEN EXISTING DEEPER THAN 6.0' AND FILL IS PLACED BELOW (^ y 9 b T zZ=��ms W O ^fV G AL W ayrym umd•• .aZ6Q�"�E �W LL 3 0 I 2095 Cross Section X1 (looking downstream) 2090 SCALE 1" = 10• STA 21+65' 2085 2080 2075 2070 2085 APPLY COIR EROSION 0+00 2090 2080 Cross Section X3 (looking downstream) CONTROL MATTING ALL 2075 =10' STA 25+65' Legend — — — — — GRADED TERRACE SLOPES — — I I I Compacted soil backfill Geolifts on Class 1 Stone Base 2055 2085 Detail 4/3.1 2080 Geolifts on Weathered Bedrock 2080 Detail 4/3.1 s Riffle Material 2055 Detail 3/3.1 0+00 \ / Detail 2/3.1 2oea \ / EXISTING GRADE, \ NO RIGHT BANK PROPOSED/ 2075 V GRADING GRADE \ / GRADE FROM EXISTING TOE, ADJUST TYPICAL TO EXISTING 207C APPLY MATTING TO BANK BOTTOM WIDTH OR INSTALL o STONE TOE WHERE DIRECTED 208! 0+00 2085 Cross Section X2 (looking downstream) SCALE 1" =10' STA 23+75' 2080 2075 2070 2085 2080 2055 PROPOSED \ GRADE COMPACTED FILL IN 12" MAX LIFTS PROPOSED TOP OF TERRACE PROPOSED GRADE GEOLIFT ON STONE BASE 0+50 0+50 GEOLIFT ON STONE BASE RIFFLE — — — — — — MATERIAL i EXISTING i GRADE STONE TOE SEE PROFILE, SHEET 2.1, FOR CLARIFICATION OF FILL IN RIFFLES AND POOLS RIFFLE — — MATERIAL 2• 1+00 U 2085 0+00 2080 Cross Section X3 (looking downstream) SCALE 1" 2075 =10' STA 25+65' Legend 2070 I I I Compacted soil backfill Geolifts on Class 1 Stone Base 2055 U Detail 4/3.1 2080 Geolifts on Weathered Bedrock 2080 Detail 4/3.1 s Riffle Material 2055 Detail 3/3.1 0+00 Stone Toe Detail 2/3.1 PROPOSED \ GRADE COMPACTED FILL IN 12" MAX LIFTS PROPOSED TOP OF TERRACE PROPOSED GRADE GEOLIFT ON STONE BASE 0+50 0+50 GEOLIFT ON STONE BASE RIFFLE — — — — — — MATERIAL i EXISTING i GRADE STONE TOE SEE PROFILE, SHEET 2.1, FOR CLARIFICATION OF FILL IN RIFFLES AND POOLS RIFFLE — — MATERIAL 2• 1+00 U 2085 Z 0 U 2080 Q) 0 2075 �y V u o N 2070 ' •'' 0 Cj 0. 0 U 2085 0 4r ., 2050 Q) 2055 � 1+00 Gn 2080 EXISTING _ GRADE 2075 2070 2085 0 i STONE TOE IN FILL OR 2080 COMPACTED FILL TO COIR WHEN IN CUT ONLY s < 3 CREATE BANKFULL BENCH r N 2055 J 0+50 1+00 8 l� E E 0' 5' 10' 15' c Rd 2075 2070 2065 0' 2' 4' 6' 2060 } 20+00 STA = 20+60.89 ELEV = 2072.20 STA 20+61' BEGIN PROJECT PROPOSED PROFILE ELEVATIONS ARE APPROXIMATE, ENGINEER TO FIELD VERIFY 20+50 21+00 I` _ _ — _ c% _ — __— _— 0 _ — __ _ _ _ J— - LEFT BANK: GRADE TYPICAL RIFFLE SIDE SLOPE AT EXISTING LEFT TOE AND INSTALL EROSION CONTROL MATTING PER DETAIL PROPOSED TOP OF TERRACE (TYP) t 1 EXISTING GATE/ CONSTRUCTION _41 ACCESS PROPOSED4 EXISTING GROUND J ALONG PROPOSED 4 (APPROXIMATE) START PROJECT, MATCH EXISTING GRADES 20+61' TO 23+40' 21+50 22+00 20+60't START GEOLIFT CONSTRUCTION ON LEFT BANK AND STONE TOE ON RIGHT BANK, CONTINUE TO END OF UPPER REACH tri i n o IT PROPOSED -- GROUND ALONG PROPOSEDE 2.5' ----------------- --------------- , MIN STA = 22+61.26 — ELEV = 2071.29 \ STA = 23+01.71 ELEV = 2071.02 22+50 RIFFLE STONE TO 2' DEPTH (TYP) I COMPACTED QId> BACKFILL EXISTING, INVERT CLASS 1 ARMORING OF POOL, POOL 4' BELOW HEAD OF DOWNSTREAM RIFFLE 23+00 0 — — - REMOVE LARGE -� BOULDERS FROM BANK i / 0 J ..-0 f 0 23+50 24+00 STRUCTURE HEADER AND FOOTER — — 2°75 a' a � 2070 4' MAX I 2.t m TYPICAL CHANNEL BACKFILL AND GRADE CONTROL SHOWN IN THIS AREA FOR CLARIFICATION PURPOSES 11- + 2060 24+50 25+00 PROTECT EXISTING 'SANITARY SEWER \�t AND MANHOLE MAINTAIN MIN. 15' CLEAR, ON OBSTRUCTIONS TO M FROM TOP OF PROPOSE[ TERRACE. NARROW BEN FROM 18' TO 16' AT STA 2 :E ING H WIDTH 4 70' gig B oo60000104 z4.Qz�� _-• ffi OSCE wn/1Q0 • - r 2085..._. ._. __ _ •••• 1�—� —i ` , , I '4 -----81----- — SSC v STREAM BENCH, 1500 RAMP ACCESS 0 �iiu�•����•1 -� a+_sos� zz+ v7O WIDTH -�� :•'�•�� x - - -eL' 1\ ��\ �� I ! ■������p�p���', X91\ v� j\a K.� START OF o S� PROJECT 20+61'a� UPPER REACH i '�' ' '„_�� fEXISTING t - - 2+00 _--- --� - s� 1 PRESERVE EXISTING RIPRAP AND ALDERS GRADING TIE-IN AND LAY TERRACE SLOPE BACK AT 2:1 WHERE ERODING �� (TYP) NO RIGHT TOE TREATMENT, EXCEPT AS DIRECTED IN FIELD 20+60 TO 22+60 w w w w _ _ cf) U) 0' 4' 6' 2070 - 2065 - STA = 24. ELEV = 2C 2060 - 2055 24+75 PROPOSED PROFILE \O i O N ELEVATIONS ARE APPROXIMATE, ?ped boNdy � 2060 APPROXIMATE LOCATION OF REMOVE ENGINEER TO FIELD VERIFY PROPOSED PROPOSED DOUBLE CULVERT EXISTING GROUND ALONG o DESIGN BY OTHERS CULVERTS PROPOSEDti 1W _ < w '91 6.15 7 STA = 25+12.76 r I n ELEV = 2065.37 an ry n W i i 1 ' ` W `-------- = ------ 1 EXISTING GROUND ,----------------, \�------------- \`----------- ------------� \�. ALONG PROPOSED t (APPROXIMATE) STA an 162062.33 PROPOSED DOUBLE CULVERT no �un INVERTS TO BE BURIED 1' BELOW on •� \=' PROPOSED STREAM GRADE 25+00 25+50 rJ / PROPOSED TOP OF. TERRACE (TYP) i PROPOSEDE i 0 7 I I Tr 26+00 28+50 27+00 27+50 FENCE TO BE RELOCATED _-- yAli D RAMP ACCESS TO STREAM BENCH, 15' WIDTH B ■' B --� ----- --- _ - ft�L 24+00 `� ' ' 26.000, 0. -t v.'0O�O,VLo-'4 , , 4��, f��n �fl1==_--81• .. n1r�O+QOi `O v .O 1` 81-----BL-----EL----,- aL CULVERT BID ITEM. SEE QUANTITY ESTIMATES <'. N EXISTING AND SYMBOLS (SHEET 0.2) FOR BID DETAILS r ryyN ysN 90' OF PROPOSED NEW IMPACTS (40' OF EXISTING PIPE AND 130' OF PROPOSED PIPE) 1 r� 28+00 UTILITY POLE TO BE RELOCATED "000- - RUNWAY DRAINAGE ! BY OTHERS 28+50 29+00 2070 Q zZ�g a �2 CE �� LL 3 2065 \O i O N yAli D RAMP ACCESS TO STREAM BENCH, 15' WIDTH B ■' B --� ----- --- _ - ft�L 24+00 `� ' ' 26.000, 0. -t v.'0O�O,VLo-'4 , , 4��, f��n �fl1==_--81• .. n1r�O+QOi `O v .O 1` 81-----BL-----EL----,- aL CULVERT BID ITEM. SEE QUANTITY ESTIMATES <'. N EXISTING AND SYMBOLS (SHEET 0.2) FOR BID DETAILS r ryyN ysN 90' OF PROPOSED NEW IMPACTS (40' OF EXISTING PIPE AND 130' OF PROPOSED PIPE) 1 r� 28+00 UTILITY POLE TO BE RELOCATED "000- - RUNWAY DRAINAGE ! BY OTHERS 28+50 29+00 2070 Q zZ�g a �2 CE �� LL 3 2065 2055 29+50 0' 20' 40' 60' gIRpORTRO ,\ Oyw- 280) \O O N ?ped boNdy � 2060 2055 29+50 0' 20' 40' 60' gIRpORTRO ,\ Oyw- 280) 2085 2060 2055 2050 28+75 0' 2' 4' 6' g ` o N PROPOSED PROFILE ELEVATIONS ARE APPROXIMATE, ENGINEER TO FIELD VERIFY $ TIE-IN TO EXISTING GRADE 29+65't -- -- w " ; LOWER REACH: 31+50 r < > LOWER REACH: START BANK GRADING LEFT BANK ONLY 0 `�. TO 32+38 PROFILE � > ______ , WORK ONLY PROPOSED GROUND ALONG `��'� =----------------------------------- ----- PROPOSED rc �______________ _____ _- ___ �._______ .0% EXISTING GROUND ' ALONG PROPOSED iEXCAVATE POOLS IN LOWER REACH - `-------------- ----------------- --------------(APPROXIMATE) (APPROXIMATE) TO BEDROCK OR 2.5' BELOW HEAD OF DOWNSTREAM RIFFLE 29+00 N' CO. N N r �r Zp_-- 29+50 30+00 30+50 31+00 - UTILITIES TO BE .RELOCATED 31+50 32+00 32+50 33+00 33+50 0' 20' 40' 60' �wmmHiw N H W w N W uj EXISTINGNO STREAM OR BANK WORK STATION 29+65' TO 31+50' BEGIN LOWER REACH, START LEFT BANK _ 30+00 GRADING AT STA 32+38' O OOn _ 000^ _ �_ _ _ _ - — �B 9i st VOO y 8 33*00 Y NO DISTURBANCE TO ''sr RUNWAY STORM ' '� RIGHT TERRACE DRAINAGE BY �t PROPOSED 4. (TYP) 'J SLOPE ABOVE OTHERS J r 1 `i �f BANKFULL z z 2 v w O 0' 2' 4' 6' f�•rr.�u 33+25 33+50 34+00 34-50 35+50 36+00 36+50 2060 In z o o' 4 __ �N im= Qzm�$d IE �J LL 2055 2050 2045 36+75 0' 20' 40' 60' V�; r no GRADING TIE-IN QOl?O END LOWER REACH PROPOSED TOP / AND PROJECT t OF TERRACE (TYP) //� //� >/i STATION 34+91' ELL` cl,// -/ �� V cam•+ ,(� ,, / . " / � -'" _ - - g1.'I _36+00 ELL — r PROPOSED (TYP) / 0000* / i v ��� • �y }) r> 00000 ,/ nit, EXISTING 4 _ RU NWAY STO RM DRAINAGE, BY G �/ �.e� •r 33� ,' /aim ��'�; ? -- �/ OTHERS NO DISTURBANCE TO RIGHT TERRACE SLOPE ABOVE BANKFULL 0 0 o O rho oyd � �r " PROPOSED PROFILE ELEVATIONS ARE APPROXIMATE, W c a ENGINEER TO FIELD VERIFY 2055 •— : ? END PROJECT, MATCH EXISTING GRADE -------------------- -\-- `I 1 1 1 A II / 1 2050 -_ 1 1 I \ / \ 1 EXCAVATE POOLS IN LOWER ' - ----------- ---- -- / \ -------------- = \� REACH TO BEDROCK OR 2.5' BELOW HEAD OF [EXISTING DOWNSTREAM RIFFLE GROUND ALONG PROPOSED f (APPROXIMATE) 2645 33+25 33+50 34+00 34-50 35+50 36+00 36+50 2060 In z o o' 4 __ �N im= Qzm�$d IE �J LL 2055 2050 2045 36+75 0' 20' 40' 60' V�; r no GRADING TIE-IN QOl?O END LOWER REACH PROPOSED TOP / AND PROJECT t OF TERRACE (TYP) //� //� >/i STATION 34+91' ELL` cl,// -/ �� V cam•+ ,(� ,, / . " / � -'" _ - - g1.'I _36+00 ELL — r PROPOSED (TYP) / 0000* / i v ��� • �y }) r> 00000 ,/ nit, EXISTING 4 _ RU NWAY STO RM DRAINAGE, BY G �/ �.e� •r 33� ,' /aim ��'�; ? -- �/ OTHERS NO DISTURBANCE TO RIGHT TERRACE SLOPE ABOVE BANKFULL 0 0 o O rho oyd � �r fl ELEVATION POINT VARIES BY BACKFILL EQUAL STEP ARRANGEMENT RIFFLE MIX FROM PROJECT PROFILE FOR ELEVATION RIFFLE TABLE HORSE SHOE SHAPED i ASEEi A' ARCHED ANGLED THALWEG ON UPSTREAM 1/3 OF ANGLED STEP (SIMILAR TO SINGLE ARM VANE) IRREGULAR DOUBLE THALWEG OR VARIABLE THALWEG PLACEMENT Types of Step Configurations HEAD OF RIFFLE ELEVATIO POINT PER PROFIL RIFFLE VENEER Profile A -A' MAY BE HORSE SHOE SHAPED, ARCHED, ANGLED FLOW ORIRREGULAR, CONTRACTOR TO VARY. IN OUTSIDE OF BEND, ANGLED WITH SLOPING ARM IS TYPICALLY REQUIRED AS SHOWN IN HEADER LOG STEP DETAIL SECTION A -A'. FOOTER BOt A' ( I ( POOL WIDEN BOTTOM \ I WIDTHTOTYPICAL STRUCTURE POOL \ DIMENSION Plan View Rock Ste 3.t Not to Scale SFF PRDFII F FILTER FABRIC Section B -B' CONTINUE BOULDERS 2' INTO BANK = BOTTOM WIDTH (TYPICAL SECTIONS) //-(HEADERS AND to / FOOTERS), to n / BOTH SIDES NONWOVEN/ FILTER FABRIC HEADER BOULDER FOOTER BOULDER Section View (Section A -A') Plan View B RIFFLE VENEER: 24" CLASS 1 STONE MIX WITH ONSITE COBBLE/GRAVEL AND SAND TO FILL VOIDS F RIFFLE ELEVATION PER PROFILE INVERT PER PROFILE CKFILL DEPTH ' MINIMUM �HEREAP-,_._,SEECETA'L OF BANK (TVP) END STONE TOE EXISTING GROUND Section B -B' RIGHT AND LEFT EDGE OF CHANNEL HIGHER THAN INVERT 42) Constructed Riffle 3.1 Not to Scale EXISTING GROUND \ BANKFULL BENCH PROPOSED GROUND I . SEE PLANS FOR LOCATIONS WHERE DETAIL APPUES. 2. EXTEND STONE TO ORIGINAL CHANNEL BOTTOM EXCEPT WHERE ORIGINAL CHANNEL BOTTOM IS GREATER THAN 4' LOWER THAN DESIGN BOTTOM. • • • • A 24" THICK CLASS 1 RIPRAP, CONFORM TO EXISTING UPSTREAM AND DOWNSTREAM BANKS ?I 4' MAX, SEE NOTE 1 2 Stone Toe 3.1 of to bcatle Section (Riffle Typical shown, same for Pool) NOTES: 1. THE TOP AND FACEEACH UFT SHALL BE SEEDED AND MULCHED BEFORE WRAPPING WITH MATTING. 2. SOIL USED FOR LIFTSTS SHALL HALL BE CLEAN, LOAMY SOIL FREE OF ROCKS AND DEBRIS. 3. LIFTS SHALL BE MODERATELY COMPACTED 50 THAT FOOTPRINTS ARE NOT VISIBLE UPON COMPLETION. 4. SEE CROSS SECNON SHEETS FOR GEOLIFT BASE TREATMENTS IN CUT AND FILL SCENARIOS. 5. LIVE STAKING SHOULD BE COMPLETED DURING THE DORMANT SEASON, GENERALLY DECEMBER TO APRIL BANKFULL BENCH OR FLOODPLAIN ELEVATION 1' HEIGHT SOIL GEOUFTSa2 23" PER ENGINEER'S DISCR 0 BASE OF FIRST uFTB"AVERT DOWNSTREAM PoFFLE IN MIX SOIL ON TOP 3' LAVER TO PROVIDE BEDDING FOR CUTTINGS EROSION CONTROL MATTING WITH BURLAP WRAPPED AROUND SOIL TO CREATE GEOLIFT, SEE LAP DETAIL DORMANT —� LIVE CUTTINGS WEATHERED ROCK (CUT AREAS) \\l- OR CLASS 1 RIPRAP STONE BASE WEATHERED ROCK (FILLAREAS) OR COMPACTED FILL, SEE CROSS SECTIONS Section View (Pool Typical Section Scenario) Geohfts 3.1 Not to Scale 2.0' (TYP) �8. 2' (TYP) Matting Lap Detail ORIGINAL CHANNELBED Illmdssfor OtoKR LJsa Ranches Scien1lift Name Common No" Sala sellcee Silky Willow Physokxrpm opulibhm Nmnlhelk Sala Nola Black Willow Cephalarahus occidentalis Buttorbush a zZvo� B pVnm2 Z ^Z Yrmia� -i x-mn J )2e��E 3� LL S t T ogm3m 2 a .. •m7.....--- Jul■ .... a..• .: n. ".si7'".'.i'. i .'i'..'.iiB MENE-Iii 77•.•.iiii:i7�:iiiii 'iiif�l 'mg..l ..:�:::� 6 G:S�iia ii 6" MIN. AM RLABDIRE / DOWNSTREAM DIRECTION AT MAP ENDS L" TOP OF BANK TOE OF SLOPE 0.6" Eco Stake TOP OF BANK TOE STAKE (TVP) Section View NOTE: 1. SEE PROJECT SPECIFICATIONS FOR TOE STAKE ECOSTAKE (TYP) Erosion Control Matting 32 Not to Scale FILTER FABRIC COMPACTED FILL EXTEND FABRIC IMO TRENCH NOTES: 1. USE WIRE A MINIUM OF 32" IN WIDTH AND WITH A MINIMUM OF 6 LINES OF WIRES WITH 12" STAY SPACING. 2. USE FILTER FABRIC A MINIMUM OF 36" IN WIDTH AND FASTEN ADEQUATELY TO THE WIRES AS DIRECTED BY THE ENGINEER 3. PROVIDE 5' STEEL POST Of THE SELF -FASTENER ANGLE STEEL TYPE. ANGLE STEEL TYPE. EXISTING GROUND rx 4" g o �Q �1 Temporary Silt Fence 32 of to Scale NOTES: 1. PROVIDE TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE TRUCKS. 5. LOCATE CONSTRUCTION ENTRANCE AT ALL POINTS OF INGRESS AND EGRESS UNTIL SITE IS STABILIZED. PROVIDE FREQUENT CHECKS OF THE DEVICE AND TIMELY MAINTENANCE. 6. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR DIRECT FLOW OF MUD ONTO STREETS. PERIODIC TOP DRESSING WITH STONE WILL BENECESSARY. 7. ANY MATERIAL TRACKED ONTO THE ROADWAY MUST BE CLEANED IMMEDIATELY. B. USE CLASS A STONE OR OTHER COARSE AGGREGATE APPROVED BY THE ENGINEER. 9. PLACE FILTER FABRIC BENEATH STONE. it Construction Entrance 3.2 Not to Scale 1. UVE STAKES TO BE PLANTED IN AREAS AS SHOWN ON PLANS AND DIRECTED BY THE ENGINEER. 2. 3x3' AVG SPACING (2 ROWS ON BANKS) 3. LIVE STAKING SHOULD BE COMPLETED DURING THE DORMANT SEASON, GENERALLY DECEMBER TO APRIL 96 Y � LIVE STAKE (TYP) TOE OF SLOPE Section View LIVE STAKE (TYP) TOP OF BANK A A A A -44"to11, A A A A 3- A A A I. A A A A A A A A A Plan View TOE OF SLOPE Liw Stakes B' MAX. WITH WIRE WITH Common Name 16' MAX. WIRE) Willow MIDDLE AND VERTICAL WRES Nnebark MIN Buttoni FILTER FABRIC TOP AND BOTTOM STRAND &SHALL}GAGE May 15 -Aug 15 SHALL BE 10 GAUGE MIN. 40 - 2.000 201010 Femlaer WIRE Straw Mulch FILTER FABRIC COMPACTED FILL EXTEND FABRIC IMO TRENCH NOTES: 1. USE WIRE A MINIUM OF 32" IN WIDTH AND WITH A MINIMUM OF 6 LINES OF WIRES WITH 12" STAY SPACING. 2. USE FILTER FABRIC A MINIMUM OF 36" IN WIDTH AND FASTEN ADEQUATELY TO THE WIRES AS DIRECTED BY THE ENGINEER 3. PROVIDE 5' STEEL POST Of THE SELF -FASTENER ANGLE STEEL TYPE. ANGLE STEEL TYPE. EXISTING GROUND rx 4" g o �Q �1 Temporary Silt Fence 32 of to Scale NOTES: 1. PROVIDE TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE TRUCKS. 5. LOCATE CONSTRUCTION ENTRANCE AT ALL POINTS OF INGRESS AND EGRESS UNTIL SITE IS STABILIZED. PROVIDE FREQUENT CHECKS OF THE DEVICE AND TIMELY MAINTENANCE. 6. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR DIRECT FLOW OF MUD ONTO STREETS. PERIODIC TOP DRESSING WITH STONE WILL BENECESSARY. 7. ANY MATERIAL TRACKED ONTO THE ROADWAY MUST BE CLEANED IMMEDIATELY. B. USE CLASS A STONE OR OTHER COARSE AGGREGATE APPROVED BY THE ENGINEER. 9. PLACE FILTER FABRIC BENEATH STONE. it Construction Entrance 3.2 Not to Scale 1. UVE STAKES TO BE PLANTED IN AREAS AS SHOWN ON PLANS AND DIRECTED BY THE ENGINEER. 2. 3x3' AVG SPACING (2 ROWS ON BANKS) 3. LIVE STAKING SHOULD BE COMPLETED DURING THE DORMANT SEASON, GENERALLY DECEMBER TO APRIL 96 Y � LIVE STAKE (TYP) TOE OF SLOPE Section View LIVE STAKE (TYP) TOP OF BANK A A A A -44"to11, A A A A 3- A A A I. A A A A A A A A A Plan View TOE OF SLOPE Liw Stakes Scientific Name Common Name Salix senceaSilky Willow Physocanp oglildiw Nnebark Cephalarihus occidentalis, Buttoni a1 2k 1/2" TO 2" a DIAMETER in p oW Live Stake Detail �9 Live Staking Notto cal IMPERVIOUSDIKE (SEE INSET'B") T-mporary Seeding (Do Not Apply Amendments to Steam Banks) Det. Type Planting Rate (Iberacre) Jan 1 -May 15 Rye Gram 120 Ground Agncultuml Limestone 2,000 2010.10 FertA¢er 750 Stray Mulch 4,000 May 15 -Aug 15 Browntap Millet 40 Ground Agncukural Limestone 2.000 201010 Femlaer 750 Straw Mulch 4,000 Aug 15 - Dec 30 Rye Grain 120 Ground Agricultural Limestone 2,000 20-1010 Fedil¢er 1,000 Strew Much 4,000 Temporary Seeding and Mulching 32 Not to Scale Dewatering Bag Riparian Seeding 3.2 Not to Scale Stabilization Seeding Riparian Seed Mix Ib/acre Stream Banks, Disturbed Buller and Upland Areas too Seeding Rate. 201b/acm So-,- Name Common Name Percentage Panicun clande&inum Deer Tongue 20 Andropogon geraN11 Big 131 a lem 20 Elymm Wryinicus Vagina wildrye 20 Sorghastnm nuam ndlangrass 20 Chasmanthiun latrfdicm Ryer Oats 10 Juncus e0usm Sol, Rusn 10 Riparian Seeding 3.2 Not to Scale Stabilization Seeding Scientific Name Common Name Ib/acre Schodonorus phoenix TW Feeoue too nStabilization Seeding 32 Not to Scale HIGH STRENGTH DOUBLE STITCHED J" TYPE SEAMS. INTAKE HOSE BAG PLACED ON l AGGREGATED OR STRAW. f PUMP DEWATERING f BAG DISCHARGE HOSE — 15' INTAKE HOSE PUMP SEEDING: 1. SEEDBED WILL BE AMENDED WITH TOPSOIL APPLICATION. 2. PH LEVEL OF SOIL SHALL BE 5.5 TO 3. SEEDBED SHALL BE LOOSE AND FREE OF ROCKS AND DEBRIS PRIOR TO SEEDING AND MULCHING 4. FOR PERMANENT SEEDING, REFER TO NOTES ON SHEET 1.1. TEMPORARY AND PERMANENT SEED SHOULD BE APPLIED TOGETHER IF PLANTING DATES ALLOW. MULCHING: 1. 2 TONS PER ACRE 2. GRAIN STRAW PREFERED, NCDOT ALTERNATIVES WILL BE CONSIDERED UPON REQUEST, AS WILL LEAVES 3. SEEDBED SHALL BE LOOSE AND FREE OF ROCKS AND DEBRIS PRIOR TO SEEDING AND MULCHING Low Growing Tree & Shrub Species 32 Not to Scale y, z� U 2x CONTAINER WIDTH Containerized Not to Scale T a v ". Z 4 Z innm. ��Z x �mrm O e?u �Z MQ:LLE i -WN IN SPOUT EXISTING TERRAIN DEWATERING BAG HIGH STRENGTH STRAPPING TREES& .JaQ'l��•.•• y4•'•" SHRUBS:mM1d�, =N Q uri i� E? N 1. 7'17' tiW y 2 O o 8 SP Ar rf ''••banwP��` ��. -WN IN SPOUT EXISTING TERRAIN DEWATERING BAG HIGH STRENGTH STRAPPING FOR HOLDING HOSE IN PLACE. -WATER FLOW STREAM BED FROM PUMP n \ FLEXIBLE 8" of CLASS B Fill DISCHARGE HOSE FILTER FABRIC 15' to 20' Inset "A" NOTE: Dewatering Bag 1. PROVIDE STABILIZED OUTLET TO STREAMBED. SAND BAG (24" X 12" X 6") OR STONE. '��J).SETW) IMPERVIOUS SHEETING FLOW � � ��, 1Inset "B" Impervious Dike DISCHARGE HOSE 7J 1 \fol X 5' STABILIZED OUTLET 'FILTER FABRIC EWATERING / USING CLASS B RIPRAP AND DBAG NCDOTTYPE 2 FILTER FABRIC (SEE INSET "A") (SEE INSET "C") Plan View 10 Pump Around System 32 Not to Scale 10' MIN. Inset"C" Stabilized Outlet STABILIZED OUTLET USING CLASS B RIPRAP TRENCHED INTO EXISTING GROUND A MINIMUM OF 6". SIZE AND LOCATION TO BE DETERMINED IN THE FIELD BY THE ENGINEER. FLEXIBLE DISCHARGE HOSE FROM /PUMP AROUND PUMP HELD IN PLACE WITH SAND BAGSASNEEDED. i r