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Home My WebLink About20171041 Ver 1_Notice of As-Built & Plan Addendum Review_20210908Strickland, Bev From: Browning, Kimberly D CIV USARMY CESAW (USA) <Kimberly.D.Browning@usace.army.mil> Sent: Wednesday, September 8, 2021 9:32 AM To: Tugwell, Todd J CIV USARMY CESAW (US); Haywood, Casey M CIV (USA); Davis, Erin B; Bowers, Todd; Wilson, Travis W.; Leslie, Andrea J; Youngman, Holland J Cc: Crumbley, Tyler A CIV USARMY CESAW (USA); Jones, M Scott (Scott) CIV USARMY CESAW (USA); Merritt, Katie Subject: [External] Notice of As -Built & Plan Addendum Review/ NCDMS Little Sebastian Mitigation Site/ SAW-2017-01507/ Surry County Attachments: Little Sebastian_100027_MP Addendum_2021.pdf Follow Up Flag: Follow up Flag Status: Flagged CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Report Spam. Hello all, The below referenced As -Built (MY0)/Record Drawing Report review has been requested by NCDMS. Per Section 332.8(o)(9) of the 2008 Mitigation Rule, this review follows the streamlined review process, which requires an IRT review period of 15 calendar days from this email notification. Please provide any comments by 5 PM on the 15-day comment deadline shown below. When providing comments please indicate if your concerns are great enough that you intend to request a site visit prior to the initial credit release. Comments provided after the 15-day comment deadline (shown below) may not be considered. **As part of this review request, DMS is requesting IRT approval of a Mitigation Plan Addendum for an upward adjustment of the project's stream assets (+19.660 Cool SMUs). At the conclusion of this comment period, a copy of all comments will be provided to NCDMS and the NCIRT along with District Engineer's intent to approve or disapprove this Final Record Drawing and initial credit release. 15-Day Comment Start Date: September 10, 2021 15-Day Comment Deadline: September 25, 2021 45-Day Credit Release Approval Deadline: October 25, 2021 *NOTE: If a site visit is requested by the IRT, comments are due 15 days after the site visit is complete. Project information: Little Sebastian Site DMS Project # 100027 Yadkin River Basin Cataloging Unit 03040101 Surry County, North Carolina Mitigation Plan Project Credits: 4,554.300 SMUs (Cool) 1 As-Built-MY0 Project Credits: 4,573.960 SMUs (Cool) Mitigation Plan Lengths/ Acreages: 8,068 linear ft. As-Built-MY0 Lengths/ Acreages: 8,105 linear ft. * + 37 linear feet associated with JN7, which includes revised buffer tool calculations. Contact Information: FD Provider: RES; Contact: Brad Breslow bbreslow@res.us <mailto:bbreslow@res.us> 847-774-8404 NCDEQ - DMS PM: Paul Wiesner, paul.wiesner@ncdenr.gov<mailto:paul.wiesner@ncdenr.gov>, 828-273-1673 USACE: Kim Browning Kimberly.d.browning@usace.army.mil 919-413-6392 IRT-DMS SharePoint Page: https://ncconnect.sharepoint.com/sites/IRT-DMS <Blockedhttps://ncconnect.sharepoint.com/sites/IRT-DMS> Little Sebastian 100027 MYO 2021 https://ncconnect.sharepoint.com/:b:/r/sites/IRT- DMS/AsBuilt%20Report%20%20Drawing/Little%20Sebastian%20(100027)/Little%20Sebastian 100027 MY0 2021. pdf?c sf=1&web=1&e=gcfVpx <Blockedhttps://ncconnect.sharepoint.com/:b:/r/sites/IRT- DMS/AsBu i It% 20Report% 20% 20Drawi ng/Little % 20Sebastia n % 20(100027)/Little % 20Sebastia n_100027_MY0_2021. pdf?c sf=1&web=1&e=gcfVpx> Little Sebastian 100027 AB 2021 https://ncconnect.sharepoint.com/:b:/r/sites/IRT- DMS/AsBuilt%20Report%20%20Drawing/Little%20Sebastian%20(100027)/Little%20Sebastian 100027 AB 2021.pdf?csf =1&web=1&e=f7tBIW <Blockedhttps://ncconnect.sharepoint.com/:b:/r/sites/IRT- DMS/AsBu i It% 20Report% 20% 20Drawi ng/Little % 20Sebastia n % 20(100027)/Little % 20Sebastia n_100027_AB_2021. pdf?csf =1&web=1&e=f7tBIW> Little Sebastian 100027 MP Addendum_2021 https://ncconnect.sharepoint.com/:b:/r/sites/IRT- DMS/AsBuilt%20Report%20%20Drawing/Little%20Sebastian%20(100027)/Little%20Sebastian 100027 MP%20Addendu m 2021.pdf?csf=1&web=1&e=QHtovm <Blockedhttps://ncconnect.sharepoint.com/:b:/r/sites/IRT- DMS/AsBuilt%20Report%20%20Drawing/Little%20Sebastian%20(100027)/Little%20Sebastian_100027_MP%20Addendu m_2021. pdf?csf=1&web=1&e=QHtovm> Please contact me with any questions. Regards, Kim 2 Kim Browning Mitigation Project Manager, Regulatory Division I U.S. Army Corps of Engineers fires August 27, 2021 Mitigation Plan Addendum Little Sebastian Mitigation Site DMS Project ID # 100027 Contract # 7187 RFP 16-006993 (Issued 9/16/2016) USACE Action ID: SAW-2017-01507 DWR Project # 2017-1041 Dear NC IRT, 3600 Glenwood Avenue, Suite 100 Raleigh, NC 27612 Corporate Headquarters 6575 W Loop S #300 Bellaire, TX 77401 Main: 713.520.5400 Through stream restoration, enhancement, and preservation, the Little Sebastian Site now presents 4,573.960 Cool Stream Mitigation Units (SMU) at As -Built. An additional 19.66 SMU were generated from the addition of JN7 between Final Mitigation Plan approval and construction. RES and DMS are requesting a mitigation plan addendum for this inclusion. Mitigation Plan assets: 4,554.3 SMUs As -Built assets: 4,573.960 SMUs JN7 is located east of JN3-B and has a 30-acre drainage area. Historically, this pond drained directly through the dam into JN3-B but due to the relocation of JN3-B, a channel was constructed in order to connect the pond about 150 linear feet to JN3-B's new location. The restored JN7 includes 37 linear feet within the easement with graded banks, livestakes, new bed material, and a grade control structure where its confluence on the left bank of JN3-B. The USACE non- standard buffer width calculation was re -done for the entire project to include reach JN7. Additionally, RES proposes to add a cross section during MY1 to track the vertical and lateral stability of this reach. Attached is the updated USACE non-standard buffer width calculation spreadsheet and map, credit table and a photograph of the constructed JN7. Sincerely, Frv<—/46-eke' Ryan Medric I Project Manager res.us JN7 looking upstream (01/21/2021). Table 1. Little Sebastian (ID-100027) - Mitigation Assets and Components Project Segment JN2-A Existing Footage or Acreage 418 Mitigation Plan Footage or Acreage 418 Migitation Category Cool Restoration Level P Priority Level NA Mitigation Ratio (X:1) 10.00000 Mitigation Plan Credits 41.800 As -Built Footage or Acreage 418 Comments Livestock exclusion JN2-B 187 187 Cool El NA 1.50000 124.667 187 Buffer planting and livestock exclusion JN2-C 307 307 Cool Ell NA 2.50000 122.800 307 Buffer planting and livestock exclusion; 31-foot crossing JN2-C 837 837 Cool Ell NA 2.50000 334.800 837 Buffer planting and livestock exclusion JN2-D 39 43 Cool El NA 1.50000 28.667 43 Channel relocation, bed and bank stabilization, crossing relocation, buffer plantings, and livestock exclusion; 62-foot crossing JN2-D 150 153 Cool El NA 1.50000 102.000 153 Channel relocation, bed and bank stabilization, crossing relocation, buffer plantings, and livestock exclusion JN3-A 350 350 Cool Ell NA 7.50000 46.667 350 Buffer planting and livestock exclusion JN3-B 900 781 Cool R 1.00000 781.000 781 Channel relocation in the natural valley, improved stream structures, buffer planting, and livestock exclusion; 43-foot crossing JN3-B 224 262 Cool R I 1.00000 262.000 262 Channel relocation, bed and bank stabilization, crossing relocation, buffer plantings, and livestock exclusion JN7* 0 0 Cool R I 1.00000 0.000 37 Channel construction, bed and bank stabilization, buffer plantings, and livestock exclusion MC1-A 469 469 Cool Ell NA 7.50000 62.533 469 Buffer planting and livestock exclusion MC1-B 717 717 Cool Ell NA 5.00000 143.400 717 Buffer planting and livestock exclusion; 41-foot utility line crossing MC1-B 260 260 Cool Ell NA 5.00000 52.000 260 Buffer planting and livestock exclusion MC1-C 545 555 Cool R I 1.00000 555.000 555 Channel bed raised, improved stream structures, buffer planting, and livestock exclusion MC3-A 243 243 Cool Ell NA 10.00000 24.300 243 Buffer planting and livestock exclusion MC3-B 402 402 Cool Ell NA 2.50000 160.800 402 Buffer planting and livestock exclusion; 41-foot crossing MC3-C 214 214 Cool El NA 1.50000 142.667 214 Bank stabilization, improved stream structures, buffer planting, and livestock exclusion MC3-D 395 395 Cool Ell NA 5.00000 79.000 395 Buffer planting and livestock exclusion BS1-A 205 214 Cool R 1.00000 214.000 214 Channel bed raised, improved stream structures, buffer planting, and livestock exclusion BS1-B 190 175 Cool Ell NA 2.50000 70.000 175 Buffer planting and livestock exclusion BS1-C 580 541 Cool R 1.00000 541.000 541 Channel bed raised, improved stream structures, buffer planting, and livestock exclusion BS1-D 185 177 Cool Ell NA 2.50000 70.800 177 Buffer planting and livestock exclusion BS1-E 278 274 Cool R 1.00000 274.000 274 Channel bed raised, improved stream structures, buffer planting, and livestock exclusion; 45-foot crossing BS1-E 94 94 Cool R 1.00000 94.000 94 Channel bed raised, improved stream structures, buffer planting, and livestock exclusion *Added between Final Mi gation Plan a d Construction Note: all crossings and utility easement have been removed from credit calculations. Project Credits Restoration Level Stream Riparian Wetland Non -rip Wetland Coastal Marsh Warm Cool Cold Restoration 2758.000 Re-establishment Rehabilitation Enhancement Enhancement I 398.000 Enhancement II 1167.100 Creation Preservation 41. 800 NSBW TOTALS 209.060 4,573.960 Site Name: USACE Action ID: NCDWR Project Number: Sponsor: County: Minimum Required Buffer Width': Mitigation Type Restoration (1:1) Enhancement I (1.5:1) Enhancement II (2.5:1) Preservation (5:1) Other (7.5:1) Other (10:1) Custom Ratio 1 Custom Ratio 2 Custom Ratio 3 Custom Ratio 4 Custom Ratio 5 Totals Buffer Zones Max Possible Buffer (square feet)° Ideal Buffer (square feet)' Actual Buffer (square feet)' Zone Multiplier Buffer Credit Equivalent Percent of Ideal Buffer Credit Adjustment Total Baseline Credit 4364.90 Wilmington District Stream Buffer Credit Calculator Little Sebastian SAW-2017-01507 100027 RES Surry 30 Mitigation Ratio Multiplier' 1 1.5 2.5 5 7.5 10 Creditable Stream Length' 2758 597 1898 819 661 5 1372 8105.00 Baseline Stream Credit 2758.00 398.00 759.20 109.20 66.10 274.40 4364.90 Buffer Width Zone (feet from Ordinary High Water Mark) less than 15 feet >15 to 20 feet >20 to 25 feet >25 to 30 feet >30 to 50 feet >50 to 75 feet >75 to 100 feet >100 to 125 feet >125 to 150 feet 243150 81050 81050 81050 324200 405250 405250 405250 405250 251259.9716 84945.83404 84268.48997 83968.47859 332661.3116 409998.3053 410938.5896 412888.522 416141.4754 238911.5981 78050.00744 77059.85783 75986.66786 263024.2205 181861.5253 71359.96571 22068.53352 6840.761415 50% 20% 15% 15% 9% 7% 6% 5% 3% 2182.45 872.98 654.74 654.74 392.84 305.54 261.89 218.25 130.95 95% 92% 91% 90% 79% 44% 17% 5% 2% -107.26 -70.87 -56.01 -62.24 310.61 135.53 45.48 11.67 2.15 Credit Loss in Required Credit Gain for Net Change in Buffer Additional Buffer Credit from Buffers -296.37 505.43 209.06 Total Credit 4573.96 'Minimum standard buffer width measured from the top of bank (50 feet in piedmont and coastal plain counties or 30 feet in mountain counties) 'Use the Custom Ratio fields to enter non-standard ratios, which are equal to the number of feet in the feet -to -credit mitigation ratio (e.g., for a perservation ratio of 8 feet to 1 credit, the multiplier would be 8 'Equal to the number of feet of stream in each Mitigation Type. If stream reaches are not creditable, they should be excluded from this measurement, even if they fall within the easement °This amount is the maximum buffer area possible based on the linear footage of stream length if channel were perfectly straight with full buffer width. This number is not used in calculations, but is provided as a reference. 'Maximum potential size (in square feet) of each buffer zone measured around all creditable stream reaches, calculated using GIS, including areas outside of the easement. The inner zone (0-15') should be measured from the top of the OHWM or the edge of the average stream width if OHWM is not known. Non -creditable stream reaches within the easement should be removed prior to calculating this area wtih GIS. 'Square feet in each buffer zone, as measured by GIS, excluding non -forested areas, all other credit type (e.g., wetland, nutrient offset, buffer), easement exceptions, open water, areas failing to meet the vegetation performance standard, etc. Additional credit is given to 150 feet in buffer width, so areas within the easement that are more than 150 feet from creditable streams should not be included in this measurement. Non -creditable stream reaches within the easement should be removed prior to calculating this area wtih GIS eth: ItIliesgisbrAgisTr fires W E 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet A Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Checked by: RTM Drawn by: MDE 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project Top of Bank Buffer Width Zone ip 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft ores N s 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet B Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Drawn by: MDE Checked by: RTM 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project 441 Top of Bank Buffer Width Zone • 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft • I • • ores N s 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet C Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Checked by: RTM Drawn by: MDE 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project 1141 Top of Bank Buffer Width Zone • 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft fires N s 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet D Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Checked by: RTM Drawn by: MDE 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project MI Top of Bank Buffer Width Zone • 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft I Ideal Buffers ar4r...4 Ores W +—E 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet E Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Checked by: RTM Drawn by: MDE 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project Top of Bank Buffer Width Zone 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft Documnt Path: IIMIGsgis,ntgis,Proje.,IORR8R Catawba OR 03 ES.NIX0,7 Lan,F.ersTigure - Buffer Ptljusimeni rwal Ores W E 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet F Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Checked by: RTM Drawn by: MDE 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project Top of Bank Buffer Width Zone 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft No Credit loss in the Minimum Buffer Zone Gideon and Little Sebastian Easement are contiguous in this location fires N s 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet G Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Checked by: RTM Drawn by: MDE 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project Top of Bank Buffer Width Zone 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft Actual Buffer' fires N s 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet H Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Checked by: RTM Drawn by: MDE 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project 1141 Top of Bank Buffer Width Zone 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft Document Path 11.esgis.ntgis,rojects,ORR8R Catawba OR 03 ESMMX0,7 LandT.ersTigure 3 -Buffer AdjusMent rmd Ores W +—E 0 62.5 125 Feet Figure 3 -Stream Buffer Credit Adjustment Sheet I Little Sebastian Mitigation Site Surry County, North Carolina Date: 8/13/2021 Checked by: RTM Drawn by: MDE 1 in = 125 feet Legend Conservation Easement Gideon Mitigation Project Top of Bank Buffer Width Zone 0-15 ft 16-20 ft 21-25 ft 26-30 ft 31-50 ft 51-75 ft 76-100 ft 101-125 ft 126-150 ft