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HomeMy WebLinkAbout20130386 Ver 1_Minor Variance_20130617NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Charles Wakild; P.E. Dee Freernan Governor Director Secretary Variance Request Form (For Minor and Major Variances) Protection and Maintenance of Riparian Areas Rules NOTE: This form may be photocopied for use as an original. Check the appropriate box below: ❑ Major Variance ® Minor Variance Please identify which Riparian Area Protection Rule applies (Note -this must be one of North Carolina's four buffered river basins. The River Bain map is available at http://112o.enr.state.iic.us/adi-nin/mgs/.) Neuse River Basin: Nutrient Sensitive Waters Management Strategy Protection and Maintenance of Riparian Areas Rule (15A NCAC 02B.0233) ❑ Tar - Pamlico River Basin: Nutrient Sensitive Waters Management Strategy Protection and Maintenance of Riparian Areas Rule (15A NCAC 02B.0259) Part l: General Information (Please include attachments if the room provided is insufficient.) Applicant's name (the corporation, individual, etc. who owns the property): -NCDOT 2. Print owner /Signing official (person legally responsible for the property and its compliance) Name: North Carolina Department of Transportation Title: not applicable Street address: 1598 Mail Service Center City, State, Zip: Raleigh, NC 27699 -1598 Telephone: ( 919) 707 -6140 Fax: ( 919 ) 250 -4224 3. Contact person who can answer questions about the proposed project: Version 6: July 2009 Name: John Merritt Telephone: (919 ) 707 -6140 Fax: ( 919) 250 -4224 Email: jsmerritt@ncdot.gov 4. Project name (Subdivision, facility, or establishment name- consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): -B -4755 - Replacement of Bridge No. 65 over Appletree Swamp on SR 1215 Project location: Street address: Bridge No. 65 over Appletree Swamp on SR 1215 (Apple Tree Rd.) City, State, Zip: Stantonsburg, NC, 27883 County: Wilson Latitude /longitude: 35.522587,- 77.800756 6. Date property was purchased:- not applicable 7. Directions to site from nearest major intersection (Attach an 8 '/2 x 11 copy of the USGS topographic map indicating the location of the site). -From the intersection of 1-95 and I -795 near Wilson, head southeast on I -795, take exit 38B to US -264 E, take exit 49 to NC -58 S for approximately 11 miles, turn west (right) onto Apple Tree Rd. 8. Stream to be impacted by the proposed activity: Appletree Swamp Stream name (for unnamed streams label as "UT" to the nearest named stream): Which of the following permits /approvals will be required or have been received already for this project? Required: Received: Date received: X X Permit Type: CAMA Major CAMA Minor 401 Certification /404 Permit On -site Wastewater Permit NPDES Permit (including stormwater) Non - discharge Permit Water Supply Watershed Variance Erosion /Sedimentation Control Others (specify) Part 2: Proposed Activity (Please include attachments if the room provided is insufficient.) 1. Description of proposed activity [Also, please attach a snap of sufficient detail (such as a plat map or site plan in Adobe (pdf) format) to accurately delineate the boundaries of -the land to be utilized in carrying out the activity, the location and dimension of any disturbance in the riparian buffers Variance Request Form, page 2 Version 6 July 2009 associated with the activity, and the extent of riparian buffers on the land. Include the area of buffer impact in ft2.: - Please see permit application. 2. Fill in the table below to identify the square footage of impact to Zones 1 & 2 in the protected riparian buffers and the required mitigation (Fill in the impacts portion of the table, even if mitigation is not required): *Zone 1 extends out 30 feet perpendicular from the most landward limit of the top of bank or the rooted herbaceous vegetation; Zone 2 extends an additional 20 feet from the edge of Zone 1. 3. State reasons why this plan for the proposed activity cannot be practically accomplished, reduced or reconfigured to better minimize or eliminate disturbance to the riparian buffers: -Drop boxes cannot be moved any further away from bridge because the depth of the drop boxes would put the system below natural ground. -Due to the super elevation of the road, the runoff is going from the center of the road to the left and the right. Therefore drop boxes are needed on both sides to catch the runoff coming from the bridge. -We are at minimum grade with the drainage system at the beginning of the bridge. We will be too deep in the ground if we try to connect the two boxes together to create one system. 4. Description of any best management practices to be used to control impacts associated with the proposed activity (i.e., control of runoff from impervious surfaces to provide diffuse flow, re- planting vegetation or enhancement of existing vegetation, etc.): - Please see NCDOT Best Management Practices for Construction and Maintenance Activities as well as Design Standards in Sensitive Watersheds will be implemented. Please provide an explanation of the following: (1) The practical difficulties or hardships that would result from the strict application of this Rule. -We would not be able to catch the runoff from bridge if we had to move outside Buffer Zone. -The drainage system would be too deep and the system could fill with water. (2) How these difficulties or hardships result from conditions that are unique to the property involved. Variance Request Form, page 3 Version 6 July 2009 Buffer Impact Zone of Impact in Number Purpose for Multiplier Required Impact Square Feet (Indicate on the Impact Mitigation Plan Sheet) Zone 1 492 N/A Bride 3 Zone 2 910 1.5 Total 1402 *Zone 1 extends out 30 feet perpendicular from the most landward limit of the top of bank or the rooted herbaceous vegetation; Zone 2 extends an additional 20 feet from the edge of Zone 1. 3. State reasons why this plan for the proposed activity cannot be practically accomplished, reduced or reconfigured to better minimize or eliminate disturbance to the riparian buffers: -Drop boxes cannot be moved any further away from bridge because the depth of the drop boxes would put the system below natural ground. -Due to the super elevation of the road, the runoff is going from the center of the road to the left and the right. Therefore drop boxes are needed on both sides to catch the runoff coming from the bridge. -We are at minimum grade with the drainage system at the beginning of the bridge. We will be too deep in the ground if we try to connect the two boxes together to create one system. 4. Description of any best management practices to be used to control impacts associated with the proposed activity (i.e., control of runoff from impervious surfaces to provide diffuse flow, re- planting vegetation or enhancement of existing vegetation, etc.): - Please see NCDOT Best Management Practices for Construction and Maintenance Activities as well as Design Standards in Sensitive Watersheds will be implemented. Please provide an explanation of the following: (1) The practical difficulties or hardships that would result from the strict application of this Rule. -We would not be able to catch the runoff from bridge if we had to move outside Buffer Zone. -The drainage system would be too deep and the system could fill with water. (2) How these difficulties or hardships result from conditions that are unique to the property involved. Variance Request Form, page 3 Version 6 July 2009 -The project area has a high water table which limits the placement of the drainage systems. (3) If economic hardship is the major consideration, then include a specific explanation of the economic hardships and the proportion of the hardship to the entire value of the project. -Not Applicable Part 3: Stormwater 1. Provide a description of all best management practices (BMPs) that will be used to control nutrients and sedimentation impacts associated with the proposed activity. Please ensure to include all applicable operation & maintenance agreements and worksheets for the proposed BMPs. Also, include the BMPs on your plan sheets. - The proposed bridge is 34 feet longer than the existing bridge; the proposed bridge will be at approximately the same grade as the existing structure; an off site detour will be used, 3:1 fill slopes where practicable; NCDOT's Best Management Practices; soil and erosion control measures; top down construction. 2. Attach a description of how diffuse flow will be maintained through the protected riparian buffers. Please ensure to include all applicable operation & maintenance agreements and worksheets for the proposed diffuse flow measure(s). Also, include the diffuse flow measure(s) on your plan sheets. - See attached Stormwater Management Plan. 3. What will be the annual nitrogen load contributed by this site after development in pounds per acre per year without structural BMPs (stormwater pond, wetland, infiltration basin, etc)? Attach a detailed plan for all proposed structural stormwater BMPs. —Not Applicable Drainage Size of Post - development BMP nitrogen6 Final Final basin drainage nitrogen 6 loading removal nitrogen nitrogen basin rate without BMPs4 efficiencys loading rate loading (ac) (lbs/ac/yr) (%) (lbs/ac/yr) from drainage basin Ibs 1 2 3 4 S Totals - - - - -- - - - - -- - - - - -- 4 Attach calculations and references. 5 Attach calculations and references. 6Include Phosphorus in the Tar - Pamlico Basin Variance Request Form, page 4 Version 6 July 2009 4. Attach all applicable supplement form(s) and Inspection and Maintenance (I &M) Form(s) to this completed application. The applicable supplemental form(s) and I &M form(s) for the proposed BMPs noted in your application can be downloaded from the following website: http : / /h2o.enr.state.nc.us /su /bmp forms.htm - Not Applicable Part 4: Proposed Impacts and Mitigation Provide a description of how mitigation will be achieved at your site pursuant to 15A NCAC 213.0242 for the Neuse Basin and 15A NCAC 213.060 for the Tar - Pamlico Basin. If buffer restoration is the method you are requesting, be sure to include a detailed planting plan to include plant type, date of plantings, the date of the one -time fertilization in the protected riparian buffers and a plan sheet showing the proposed location of the plantings. A guide to buffer restoration can be downloaded at the following website: http: / /www.nceep.net /news /reports /buffers.pdf If payment into a buffer restoration fund is how you plan to achieve your mitigation requirement, then include an acceptance letter from the mitigation bank you propose to use stating they have the mitigation credits available for the mitigation requested. Part 5: Deed Restrictions By your signature in Part 6 of this application, you certify that all structural stormwater BMPs required by this variance shall be located in recorded stormwater easements, that the easements will run with the land, that the easements cannot be changed or deleted without concurrence from the State, and that the easements will be recorded prior to the sale of any lot. Part 6: Applicant's Certification I, C �° (print or type name of person listed in Part I, Item 2 , certify that he information included on this permit application form is correct, that the project will be constructed in conformance with the approved plans and that the deed restrictions in accordance with Part 5 of this forts will be recorded with all required permit conditions. Signature Date: Title: Part 7: Plan Sheets Be sure to include a copy of all of your completed application form, plan sheets and maps in Adobe (pdf) format on a CD or floppy disk. Variance Request Form, page 5 Version 6 July 2009 Part 8: Checklist A complete application submittal consists of the following components. Incomplete submittals will be returned to the applicant. The complete variance request submittal must be received 90 days prior to the EMC meeting at which you wish the request to be heard. Initial below to indicate that the necessary information has been provided. Applicant's Item Initials i- ......__..._.__. • Original and two copies of the Variance Request Form and the attachments listed below. _' :.................. • A vicinity map of the project (see Part 1, Item 5) _ _____..nom ...................... Narrative demonstration of the need for a variance (see Part 2) • A detailed narrative description of stormwater treatment /management (see Part --- 5--- - - - - -- • Calculations supporting nitrogen (phosphorus in the Tar - Pamlico Basin) -------- - - - - -- loading estimates (see Part 4) • Calculations and references supporting nitrogen (phosphorus in the Tar - -. - ...... ..... Pamlico Basin) removal from proposed BMPs (see Part 4) • Location and details for all proposed structural stormwater BMPs (see Part 4) • Three copies of the applicable Supplement Form(s) and I &M Form(s) for each ' BMP and /or narrative for each innovative BMP (see Part 4) • Three copies of plans and specifications, including: 0 Development /Project name 0 Engineer and firm 0 Legend and north arrow 0 Scale (I"= 50' is preferred) 0 Revision number & date 0 Mean high water line (if applicable) 0 Dimensioned property/project boundary 0 Location map with named streets or NC State Road numbers 0 Original contours, proposed contours, spot elevations, finished floor elevations 0 Details of roads, parking, cul -de -sacs, sidewalks, and curb and gutter 0 Footprint of any proposed buildings or other structures 0 Wetlands delineated, or a note on plans that none exist 0 Existing drainage (including off - site), drainage easements, pipe sizes, runoff calculations 0 Drainage basins delineated 0 Perennial and intermittent streams, ponds, lakes, rivers and estuaries 0 Location of forest vegetation along the streams, ponds, lakes, rivers and estuaries Variance Request Form, page 6 Version 6 July 2009