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Home My WebLink About20191132 Ver 1_Presentation on 20200203 to IRT_20200204Strickland, Bev From: Kichefski, Steven L CIV USARMY CESAW (USA) <Steven.L.Kichefski@usace.army.mil> Sent: Tuesday, February 4, 2020 9:21 AM To: Davis, Erin B; Haupt, Mac; Kim Browning; Leslie, Andrea J; Tugwell, Todd J CIV USARMY CESAW (US); Bowers, Todd Subject: [External] FW: East Buffalo Attachments: East Buffalo 2.3.20 to IRT pdf.pdf Follow Up Flag: Follow up Flag Status: Completed CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to report.spam@nc.gov<maiIto: report.spam@nc.gov> East Buffalo presentation -----Original Message ----- From: Jake McLean [mailto:jmclean@wildlandseng.com] Sent: Monday, February 3, 2020 6:44 PM To: Kichefski, Steven L CIV USARMY CESAW (USA) <Steven.L.Kichefski@usace.army.miI> Subject: [Non-DoD Source] East Buffalo The powerpoint was too big, although here's a sharepoint link to it in case that works for folks: Blocked https://wildlandsengineering- my.sha repoi nt.com/:f:/g/personal/j mclea n_wi ldla ndseng_com/EuJ KLZXIfZZCkpDH msI BzU kBUs4Sedj6xVc24MCXx5aA3A? e=KU2XHN I'll bring 6 copies tomorrow and be there at 9-9:30. Thanks, Jake Jake McLean I Water Resource Engineer, Project Manager 0: 828.774.5547 M: 828.545.3865 1 Wildlands Engineering, Inc. <Blockedhttp://www.wiIdlandseng.com/> 167-B Haywood Road Asheville, NC 28806 East Buffalo Stream Mitigation (Umbrella) Bank WILDLANDS ENGINEERING Project Refresher 4 WILDLANDS J � ENGINEERING • Wildlands Holdings Mitigation Bank - Little Tennessee • Proposed with large preservation component • At Prospectus, "4,051 stream credits • Mitigation Plan (current in pre -draft), 4,235 stream credits Project Location - Service Area - HUC 06010204 _ 14 Digit Hydrologic Unit Code (HUC) East Buffalo MlTlgaTlOn Site VNlcor Alpux7AlN$� lrlllo ntlm Crrek 4 6 B ,", C.� -� JI ak l f�v gQ —r %Z �;WILDLANDS ENG i N E E RI NG 0 1.25 2.5 5 7.5 10 Miles 0Z WILDLANDS ENGINEERING La ke Fontana „AGO, �1 204010020 V 06010204010010� - Ir to Andrews/Murphy Figure 2 Service Area Map East Buffalo Mitigation Site Prospectus Little Tennessee Umbrella Mitigation Bank Little Tennessee 06010204 Graham County, NC mt�^` C Cachtan 'tanch Gladdens Creek La ke Santeetlah Nantehala National F—i - Cheoah Ranger Diseici Sammy Basin Nanrahela National Forrest - Cheoah Ranger District Cheoah Mountains Cheoah Mountains 'I�untain G' Robbinsville Significant Natural Heritage Areas NC Natural Heritage Program Natural Areas NCDMS Conservation Easements Project Location Natural Heritage Element Occurances (Current) Animal Natural Community Plant Figure 1 Vicinity Map East Buffalo Mitigation Site Prospectus W W I L D L A N D S 0 1,250 2,500 5,000 7,500 10 000 Feet Little Tennessee umbrella Mitigation Bank ENGINEERING I I I I I I I ICI Ili I I Little Tennessee 06010204 Graham County, NC Project Schedule • Prospectus - 5/7/19 • Easement - 2/10/20 • Mitigation Plan - 2/29/20 • Construction -Winter 2020 • Planting -Spring 2021 • As -Built Survey— Spring 2021 k0Z WILDLANDS ENGINEERING Project — Prospectus Phase Site Plan tiadl r `a Existing road to be natura� ' a. Gcct$p i Mons ,lam �• it ,Paa bpi i r Fs�15F3 ! i ! �♦ 3ae ♦1 - - - - - ' CE EXCLUS;o rye t • �� .. t a4 � I t +! ! i aR DnDQ 1 g �.' . � ,♦t rya r # _... w ,* WILDLANDS ENGINEERING Project Farce ' Proposed Conservation Easement Boundary Concept Streams (14,940 fq Stream Restoration (1:1) {1,241 ft) Stream Enhancement 1 (1.5:1) 034 fc) Stream Enhancement II (2.5:1} (Z,514ft) Stream Preservation (71) {9,464 ft) i Stream Preservatlon (10.1) (1,966 ft) Non Project Streams Culvertsto Remain Culvertstc be Removed ......•• Unpaved Road ---- Power Line -. Reach Breaks Flgu re 9 Concept M a p W W I L 1-3LAN D S e N c ry e e z i N c East Buffalo Mitigation Site Prospectus i 0 250 500 1,000 reet p Little Tennessee UmO{ an b,Mitigation Bk Little Tennessee 06020204 Grohom County, NC Project Components (Prospectus & Current) Road and Crossing Naturalization WILDLANDS ENGINEERING Project Components (Prospectus & Current) NNIP infestations along tributaries _4 , #tip WILDLANDS ENGINEERING Project Components (Prospectus) Enhancement II Remove privet, select regrade banks & structures, remove livestock (orange) Enhancement I Livestock removal, minor re -alignment, profile/dimension (yellow) Restoration UT3 to valley bottom WILDLANDS ENGINEERING Assessment Findings • Powerline Runs through wetland Access issue • East Buffalo Creek is severely perched on hillslope and jumps out of bank flowing into main valley for >5 year event • UT2 has multiple issues Ditched sections Overgrown with E. Ivy Mid -channel bar • UT3 restoration could cross to main low point, but seems to fit better in the near valley with large linear wetland wetland Mainstem and UT2 fit best to middle of valley FEMA considerations are present �' WILDLANDS ENGINEERING f E 40 ♦.4 +' ,i L•Q�,1f3 � � i # � r � 1 r 1 4 �t4. 1 ♦ s „.. 4 w c « t c - r �I +♦ CE EXCLUSION �. FEMA Study Building in floodplain �' WILDLANDS ENGINEERING Mainstem is the study stream WILDLANDS ENGINEERING EBur.I.Cr Plan: Channel perf 121100119 Penn Road —rig w [n 1 CUP ��-12 a na a 7 WE 1pct WO ayr 1y5 Syr 7E M 2yr MUM lIeTI UT3 R"M Mainstem 6 � aln o � 5-yr flow close to out of bank at I existing culvert ,DII 2m 310 AMD Sal 6m _ 1993 Aerial of Buildings w0WILDLANDS ENGINEERING eeify base point: ri Plot and Publish Job Complete ON@ Pipe and Ford Crossings kovt WILDLANDS ENGINEERING Proposed Concept for Mitigation Plan WILDLANDS ENGINEERING Figure XX Concept Map East Buffalo Mitigation Site W I LI7 L A N I7 S 0 400 800 Feet Little Tennessee Umbrella Mitigation Bank ENGINEERING 1 1 1 Little Tennessee 06010204 Groh— County, NC Proposed Concept for Mitigation Plan }5 y V Is -1L, rv WILDLANDS ENGINEERING x �2 Project Parcels t ` Proposed Conservation Easement Boundary -- Potential Wetland Waters * Proposed Project Streams EXCZI)Ih! ++ - Restoration 4 Enhancement Enhancement II Preservation + Preservation - No Credit }_ Non -project Streams r Existing Culverts s •---- Unpaved Road Proposed Power Line Easement Realignment Option �, Reach Breaks Cl N- w0WILDLANDS ENGINEERING Reaci� Rea�l7 1 Mitigation Type 1 Proposed Length (ft) Mitigation Factor Stream MitigationS#ream Credits 1 Ternperature 1 East Buffalo 1 Ell 574 2.5 230 Cold East Buffalo 2 Ell 860 1.5 573 Cold East Buffalo 3 Ell 276 2.5 110 Cold UTl - Ell 396 2.5 158 Cold UT2 1 P 1,797 7, v 257 Cold UT2 2/3 Ell 261 1, _ 174 Cold UT2 2/3 EI 323 1, _ 215 Cold UT3 1 P 2,179 7, v 311 Cold UT3 2 R 977 1, 0 977 Cold UT3 3 E1 377 1, _ 251 Cold UT4a 1 No Credit 69?. c Cold UT4a 2 No Credit 99 - 6 Cold UT4b - P 505 7.0 72 Cold UT4 1 P 2993 7, v 428 Cold UT4 2 E1 164 1, _ 109 Cold UT5 1 P 1490 7, v 213 Cold UT5 2 Ell 191 2.5 76 Cold U T6 - P 196 10.0 20 Cold UT7 - P 601 10.0 60 Cold Bank rotaV 4,235 cold laychange based on 1D length or based on discussion of approach with IRT Concept w/ Notes RI�gRD \V � Wk WAYry �RTIpNQY1yi A FN \ G ObL9 6NNN T�f,A& \ LIP P'RESER'IATIOV / J1 / 1 l Iq nD PrN1, f OFPe PP ]POSED - )3. OF POWERLINE" 1 1 _ M 0Z WILDLANDS ENGINEERING HILL.NHI:H FAWL,IR^JUNI'O_T AND -LOYJ-O VALLE'Y BOTTOM / �LRL.SIVG 4 E u-s nE-IN //r'—•—"'--P ~�+- "'�'/ �` \ / STATT IIE— PRIVET LOT -I RaN<5 EAST EUFA C EK \ P EF Ci I(ED h\ \� • olrcNED EAST 6LFFAlC CPEEN .0 l2f RE - - Op I LD[ATION / E%I.iIRG FONDER JNE ' -tRjp l -11NFF BUILDINC'ZD FLL ` UTl R1 to'FUFFFP. / __ ____ THROLGH IELD T9 T2 RCAflI] �y MItrCHANNEL RCP ENHANCEMENT] � TO BE REMOVED U , � GAG f If10P E2) l� ( PROPoseo PowER POLE ITmI v) U ___ y � _ � -"--- -1-- - BE 4EANDUVED kl P CHANNEL PARTIALLY C F-. ANTHEI I HKi - -_-- _- ________� __ ` f oNLneo w/vaDEr � Y WALL ENDSION&E. IW V \y I \ ACROSS ENTIRE \ CHANNEL (C E%STING UT1112 NO CRCDi UTn ClsCL: titi: Nn yy� d POEEDGACE III. �3 W TYP�� •\. may. �'� � �fN 3E. Ne — RIP lE"CMP711 s yy L � EX �a/ ROIL IN x11 121 IDL IN-5 9TRJp BRA e ` y ~ ' ti Ns _ I.L o z 9n roo a 1_�_ -xai u. IL EP R> ��9j 23 1J Nx vn _ l � CMv ti =x MP . Wu UT3 a UTR Ill PBEI Ell., ! � � - NLDOT ROIA W'TVP PROPOSED RESTORATION 1 / DTO Rl i I PFl-RVA-ION - PPOPOSEDENXI NN,LYEu III PROPDSEDENH2 PROPOSED UTILITY / RELOCATION PRDPOEED POWERLINE MAINTENANCE EASEMENT l , 1 O `N i Functional Uplift and Related Benefits of Proposed Concept • Hydrologic, Hydraulic and Geomorphic Function WILDLANDS ENGINEERING • Improve hydrology to existing and relict wetlands, especially in dry season • Reconnect surfacewater and groundwater — enhanced lateral and vertical connectivity for habitat and physicochemical benefits • Restore full range of stream flows (all large flows currently spill over levy) • Restore natural overbank interaction • Sediment continuity (East Buffalo occupies middle of valley above & below) • Riparian buffer has enhanced capability for filtration • Setup natural stream evolution and reduce risk of future avulsion • Cycling of nutrients within hyporheic zone is enhanced • Practical and Other Benefits • Reduces need to apply herbicide within immediately vicinity of creek • Tributary and natural dendritic network is reestablished — landscape pathways • Best option for overhead utility • Streambank is not significantly impacted for sole purpose of privet removal