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HomeMy WebLinkAbout20070822 Ver 1_Approval Letter_20070524~ `~ O~O~ W A T ~~QG Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality May 24, 2007 Warren County DWQ Project No. 20070822 SR 1515 State Project No. SB.20931 APPROVAL of 401 WATER QUALITY CERTIFICATION and TAR-PAMLICO BUFFER AUTHORIZATION, with ADDITIONAL CONDITIONS Mr. J.W. Bowman, P.E., Division Engineer NCDOT, Division 5 2612 North Duke Street Durham, NC 27704 Dear Mr. Bowman: You have our approval, in accordance with the conditions listed below, for the following impacts for the purpose of a pipe replacement on SR 1515 in Warren County: Stream Imuacts in the Tar-Pamlico River Basin Site Permanent Fill in Bank Excavation to Bank Stabilization Temporary Total Stream: Perennial Stream Perennial Stream to Perennial Stream Dewatering of Impact (linear ft) (linear ft) (linear ft) Perennial Stream (linear ft) linear ft 1 23 34 15 72 concurrent) 72 Total 23 34 15 72 concurrent 72 Total Stream Impact for Project: 721inear feet. Tar-Pamlico Ri arian Buffer Im acts Site Zone 1 minus =Zone 1 Zone 1 Buffer Zone 2 minus =Zone 2 Zone 2 Buffer Impact Wetlands Buffers (not Mitigation Impact Wetlands Buffers Mitigation (sq ft) in Zone 1 wetlands) Required (sq ft) in Zone 2 (not Required (using (sq ft) (sq ft) (using 3:1 ratio) (sq ft) wetlands) 1.5:1 ratio) s ft 1 5,138 0 5,138 N/A 3,052 0 3,052 N/A Totals 5,138 0 5,138 0 3,052 0 3,052 0 * n/a =Total for Site is less than 1/3 acre and 1501inear feet of impact, no mitigation required Total Buffer Impact for Project: 8,190 square feet.. The project shall be constructed in accordance with your application dated received May 14, 2007. After reviewing your application, we have decided that these impacts are covered by General Water Quality Certification Number 3627 and 3634. This certification corresponds to the Nationwide Permit 14 and Nationwide Permit 33 issued by the Corps of Engineers. This approval is also valid for the Tar-Pamlico Riparian Buffer Rules (15A NCAC 2B .0259). In addition, you should acquire any other federal, state or local permits before you proceed with your project including (but not limited to) Sediment and Erosion Control, Non-Discharge and Water Supply Watershed regulations. This approval will expire with the accompanying 404 permit. N.o°ne~Carolina Transportation Permitting Unit r/VUtura!!1, 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-17861 FAX 919-733-68931 Internet: http:l/h2o.enr.state.nc.us/ncwetlands An Equal OpportunitylAffirmative Action Employer- 50% Recycled110% Post Consumer Paper ~ WqT~, Michael F. Easley, Governor Q /~ ~~ QG William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources ` Cq ~ Alan W. Klimek, P.E. Director ] ~ Division of Water Quality ~ ~ This approval is valid solely for the purpose and design described in your application (unless modified below). Should your project change, you must notify the DWQ and submit 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 the conditions. If total wetland fills for this project (now or in the future) exceed one acre, or of total impacts to streams (now or in the future) exceed 150 linear feet, compensatory mitigation maybe required as described in 15A NCAC 2H .0506 (h) (6) and (7). For this approval to remain valid, you must adhere to the conditions listed in the attached certification as well as those listed below. Conditions of Certification: 1. All stormwater runoff shall be directed as sheetflow through stream buffers at nonerosive velocities, unless otherwise approved by this certification. 2. All riparian buffers impacted by the placement of temporary fill or clearing activities shall be restored to the preconstruction contours and revegated. Maintained buffers shall be permanently revegetated with non-woody species by the end of the growing season following completion of construction. For the purpose of this condition, maintained buffer areas are defined as areas within the transportation corridor that will be subject to regular DOT maintenance activities including mowing. The area with non-maintained buffers shall be permanently revegetated, with native woody species before the next growing season following completion of construction. 3. Pursuant to NCAC 15A 2B.0259(6), sediment and erosion control devices shall not be placed in Zone 1 of any Tar-Pamlico Buffer without prior approval by the NCDWQ. At this time, the NCDWQ has approved no sediment and erosion control devices in Zone 1, outside of the approved project impacts, anywhere on this project. Moreover, sediment and erosion control devices shall be allowed in Zone 2 of the buffers provided that Zone 1 is not compromised and that discharge is released as diffuse flow. ' 4. Placement of culverts and other structures in waters, streams, and wetlands shall be placed below the elevation of the streambed by one foot for all culverts with a diameter greater than 48 inches, 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 is being maintained if requested in writing by DWQ. If this condition is unable to be met due to bedrock or other limiting features encountered during construction, please contact the NCDWQ for guidance on how to proceed and to determine whether or not a permit modification will be required. 5. Riprap should not be placed in the active thalweg channel or placed in the streambed in a manner that precludes aquatic life passage. Bioengineering boulders or structures should be properly designed, sized and installed. 6. For any streams being impacted due to site dewatering activties, the site shall be graded to its preconstruction contours and revegetated with appropriate native species. 7. If concrete is used during construction, a dry work area should be maintained to prevent direct contact between curing concrete and stream water. Water that inadvertently contacts uncured concrete should not be discharged to surface waters due to the potential for elevated pH and possible aquatic life and fish kills. 8. During the construction of the project, no staging of equipment of any kind is permitted in waters of the U.S., or protected riparian buffers. 9. The dimension, pattern and profile of the stream above and below the crossing should not be modified. Disturbed floodplains and streams should be restored to natural geomorphic conditions. N~o°~Carolina Transportation Permitting Unit ~ v"~llra~~lf 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-17861 FAX 919-733-68931 Internet: http://h2o.enr.state.nc.us/ncwetlands An Equal OpportunitylAffirmativeAcbon Employer- 50% Recycled110% Post Consumer Paper W A T Michael F. Easley, Governor ~ ~ Q iQ QC~ ~~ William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources ` Uj ~ Alan W. Klimek, P.E. Director ~ Division of Water Quality o ~c 10. 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 such as sandbags, rock berms, cofferdams and other diversion structures shall be used to prevent excavation in flowing water. 11. Heavy equipment shall be operated from the banks rather than in the stream channel in order to minimize sedimentation and reduce the introduction of other pollutants into the stream. 12. All mechanized equipment operated near surface waters must be regularly inspected and maintained to prevent contamination of stream waters from fuels, lubricants, hydraulic fluids, or other toxic materials. 13. No rock, sand or other materials shall be dredged from the stream channel except where authorized by this certification. 14. Discharging hydroseed mixtures and washing out hydroseeders and other equipment in or adjacent to surface waters is prohibited. 15. A copy of this Water Quality Certification shall be posted on the construction site at all times. In addition, the Water Quality Certification and all subsequent modifications, if any, shall be maintained with the Division Engineer and the on-site project manager. 16. The outside buffer, wetland or water boundary located within the construction corridor approved by this authorization shall be clearly marked by highly visible fencing prior to any land disturbing activities. Impacts to areas within the fencing are prohibited unless otherwise authorized by this certification. 17. Upon completion of the project, the NCDOT Division Engineer shall complete and return the enclosed "Certification of Completion Form" to notify DWQ when all work included in the 401 Certification has been completed. 18. Native riparian vegetation must be reestablished within the construction limits of the project by the end of the growing season following completion of construction. 19. 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. N~one~Carolina Transportation Permitting Unit ~ ~"tuCa~~l/ 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-17861 FAX 919-733-68931 Internet: htto://h2o.enr.state.nc.us/ncwetlands An Equal OppoRunitylAffirmative Action Employer-50% Recycled110% Post Consumer Paper W A r~ Michael F. Easley, Governor O ~Q OCR QG William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources ` Cq fir.. Alan W. Klimek, P.E. Director ~ ~ Division of Water Quality o ~ 20. There shall be no excavation from, or waste disposal into, jurisdictional wetlands or waters associated with this permit without appropriate modification. Should waste or borrow sites be located in wetlands or streams, compensatory mitigation will be required since that is a direct impact from road construction activities. 21. Sediment and erosion control measures shall not be placed in wetlands or waters unless otherwise approved by this Certification. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored upon completion of the project. If you do not accept any of the conditions of this certification, 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 that conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699. This certification and its conditions are fmal and binding unless you ask for a hearing. This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have any questions, please contact Rob Ridings at (919) 733-9817. Attachments (General Certifications and Certificate of Completion form) cc: Chris Murray, Division 5 Environmental Officer Eric Alsmeyer, US Army Corps of Engineers, Raleigh Field Office Travis Wilson, NC Wildlife Resources Commission Gary Jordan, US Fish and Wildlife Service DWQ Raleigh Regional Office copy File Copy _ J1ne CarOlllla Transportation Permitting Unit ~tlfCQ~~l,~ 1650 Mail Service Center, Ralegh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-17861 FAX 919-733-68931 Internet: htto://h2o.enr.state.nc.us/ncwetlands An Equal OpportunitylAffirmativeAaion Employer - 50% Recycled110% Post Consumer Paper