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HomeMy WebLinkAbout20131087 Ver 1_Revised Adaptive Management Plan_20190802Strickland, Bev From: Sent: To: Cc: Subject: Attachments: Follow Up Flag: Flag Status: Erin, Kim, Todd and Mac - Wiesner, Paul Friday, August 02, 2019 3:52 PM Davis, Erin B; Tugwell, Todd J CIV USARMY CESAW (US); Kim Browning; Haupt, Mac Bradley Breslow; Ryan Medric; Frasier Mullen Poplin Ridge - DMS#95359 - Revised Adaptive Management Plan_ August 2, 2019 PoplinRidge_95359_AMP_2019.pdf Follow up Flagged At the April 25-26, 2019 DMS -IRT credit release meeting, the IRT requested that the Poplin Ridge Adaptive Management Plan be updated to include elevations, cross sections, a plan for excavation of the stream, and design sheets. The IRT also requested that the plan address sediment and the wet soil substrate. At the meeting, the IRT indicated that the adaptive management plan for Poplin Ridge would not require formal IRT approval. The revised plan is attached. Please let us know if you have any questions or concerns. RES plans to begin the work in August. DMS will schedule an on-site IRT meeting once the adaptive management work is complete. Thanks Paul Wiesner Western Regional Supervisor North Carolina Department of Environmental Quality Division of Mitigation Services 828-273-1673 Mobile Pau l.wiesnera-ncdenr.gov Western DMS Field Office 5 Ravenscroft Drive Suite 102 Asheville, N.C. 28801 D_ E1-1�� Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. fires August 2, 2019 Paul Wiesner NCDEQ — DMS 5 Ravenscroft Drive Asheville, NC 28801 302 Jefferson Street, Suite 110 Raleigh, NC 27605 Corporate Headquarters 5020 Montrose Blvd. Suite 650 Houston, TX 77006 Main: 713.520.5400 RE: Poplin Ridge Stream Restoration Site — 2019 Monitoring Adaptive Management Memo Mr. Wiesner, In July 2018, the IRT, NCDMS, and RES visited Poplin Ridge to evaluate the condition of UT2-2, a passively restored stream reach through a drained pond bottom. The main problem was that a distinct flow path was not obvious and the IRT determined credits were to be withheld above and within the drained pond bottom. In September 2018 and April 2019, RES staff visited the site and determined, using survey and visual assessment, that there is a preferred flow path but there are several issues preventing flow from remaining within and defining a stream channel. At the 2019 Credit Release Meeting, the IRT requested design sheets as part of the Adaptive Management Plan which are attached. Below is an explanation of the work that will be completed. Area 1 Issue: The log sill at the start of UT2-2 (Sta: 3+61.97) is set too high and is blocking flow during low flow conditions. Treatment: RES will remove and reset the log sill at an elevation of 580.00' to allow for positive drainage through the reach. See attached Sheet 2. Area 2 Issue: There are two headcuts forming downstream of Area 1 on UT2-2. Treatment: RES will repair and stabilize these headcuts by installing several grade control/drop structures as shown on the attached Sheet 2. Area 3 Issue: The middle section of UT2-2 (Sta: 6+45 to 7+80) is relatively flat and the channel bed and bank is not well defined. Treatment: RES will excavate a channel per the typical riffle/meander cross sections and detailed profile shown on Sheet 2 along the existing flow path within the old pond bottom. Several woody riffles and brush toes will be installed to add bedform diversity, provide grade control, and improve habitat. Area 4 Issue: The filter berm elevation at the downstream end of UT2-2 is too high and is therefore impounding water within the lower third of the drained pond bottom. 0 Treatment: RES will notch the filter berm per the proposed riffle cross section to allow flow to pass through the newly constructed channel and to the culverts. Area 5 Issue: The confluence of UT2-A and UT2-2 in the drained pond bottom is not well defined. Treatment: RES will regrade UT2-A from Sta: 4+28 to 5+03 per the typical cross section on Sheet 2 and will confluence with UT2-2 near STA 7+50. The approach in the approved Final Mitigation Plan for this reach was to use passive restoration, then return in a later monitoring year when the pond bottom dried out to enhance and stabilize the channel with habitat and grade control structures (Section 7.2). The pond bottom is still wet but after five years of herbaceous vegetation growth, the soil structure has stabilized, and localized areas of unconsolidated substrate should not hinder the ability to complete the proposed stream construction activities. Additionally, the pond bottom has never shown any signs of surface cracking or loss of hydrology. RES does not anticipate having to amend, remove, or import soil for the adaptive management plan to be successful. In areas where the soil has remained saturated, RES will employ timber mats during construction to minimize disturbance within the pond bottom. RES plans to plant live stakes along the stream and container trees throughout the whole area to address the lack of woody vegetation throughout the drained pond bottom. Tree species tolerant of very wet conditions like black willow, buttonbush, sycamore, willow oak, and green ash will be planted in the fall/winter of 2019. Based on the proposed work, the Limits of Disturbance (LOD) will be less than one acre, so no Erosion and Sediment Control Permitting will be required. Regarding 404/401 permitting, RES believes that the proposed work falls within the treatment outlined in the approved Final Mitigation Plan to, "... enhance and stabilize the basef/ow channel and install grade control structures once the pond bed has dried out". Similar to the work described in the mitigation plan wetland impacts will be minimal and temporary and result from disturbance during grading and structure installation. The original 404/401 authorizations from the approved mitigation plan our attached to the adaptive management plan. RES plans to have this work done by the end of summer 2019 and will include documentation of the repairs in the MY5 monitoring report. RES will also add two new cross sections to UT2-2 (proposed locations are shown on Sheet 2) that will be surveyed in MY5 and MY7 with an additional survey in MY6. RES will do one random vegetation plot in the pond bottom with data reported in MY5, MY6, and MY7. The location of the random vegetation plot will change in each monitoring year. Thank you, Ryan Medric I Ecologist E� 6 PROJECT LOCATION WN^.4e 0 a e , wa Adv Ft4 �Vu n ilius Wcafi.pta� qd rou.i co nvr .. , rs �+.M+t-.y ; �� n VICINITY MAP NTS DMS PROJECT #: 95359 CONTRACT #: 004672 U5ACE ACTION ID #: 5AW-201 2-0 1 079 DWR PROJECT #: 13-1067 E0.00t POPLIN RIDGE STREAM RESTORATION PROJECT UNION COUNTY, NC ADAPTIVE MANAGEMENT PLAN JULY 2019 RESOURCE ENVIRONMENTAL SOLUTIONS, LLC 302 JEFFERSON ST, SUITE 110 RALEIGH, NC 27605 G ITG A A A A 1 N 1 .J pres' 302 Jefferson Street, Suite 110 Raleigh, NC 27605 Main: 919.829.9909 Fax: 919.829.9913 www.res.us SEAL w Qrn o C) � N O N CL ti z O i- U z O z o W a__ Ir O z w , o Q F-- Q o z z O (n (/) W J W Y Q W W PROJECT NUMBER: 100910 PROJECT MANAGER: BPB DESIGNED: AFM DRAWN: AFM CHECKED: BRC SHEET NUMBER: STREAM CONSTRUCTION NOTES: ALL PROPOSED CHANNELS AND TEMPORARY AND PERMANENT CROSSINGS SHALL BE CONSTRUCTED IN A DRY CONDITION VIA OFFLINE CONSTRUCTION WHERE POSSIBLE. PUMP AROUND OPERATIONS SHOULD BE LIMITED TO AREAS WHERE THE EXISTING AND PROPOSED CHANNEL ALIGNMENTS OVERLAP. 2. ALL IMPERVIOUS DIKES AND PUMPING APPARATUS SHALL BE REMOVED FROM THE STREAM AT THE END OF EACH DAY TO RESTORE NORMAL FLOW BACK TO THE CHANNEL UNLESS OTHERWISE APPROVED BY THE ENGINEER. WITH APPROVAL, A PUMP AROUND MAY BE ALLOWED TO RUN CONTINUOUSLY IF THERE IS NO FORECAST FOR RAIN OVERNIGHT, AND/OR THE PUMP APPARATUS IS MAINTAINED AND MONITORED CONTINUOUSLY. 3. CONSTRUCT UPSTREAM PORTION OF THE CHANNEL FIRST, WORKING IN AN UPSTREAM TO DOWNSTREAM DIRECTION, UNLESS OTHERWISE APPROVED BY THE ENGINEER. 4. STRUCTURES ARE TO BE INSTALLED IN LOCATIONS SHOWN ON PLAN SHEETS (AS INDICATED ON THE STRUCTURE TABLES) USING METHODS DESCRIBED IN THE DETAIL SHEETS. PRIOR TO FINE GRADING, OBTAIN APPROVAL OF THE ENGINEER ON INSTALLATION OF STRUCTURES. 5. UPON COMPLETION OF FINE GRADING, INSTALL STREAM BANK STABILIZATION INCLUDING, EROSION CONTROL MATTING OR SOD MATS ALONG CHANNEL BANKS. w J LL LEGEND EXISTING CONTOUR MAJOR 50 EXISTING CONTOUR MINOR 4G PROPERTY LINE — — — — EXISTING TKEELINE EXISTING TREE PROPOSED TOP OF BANK PROPOSED CENTERLINE OF CHANNEL LIMITS OF PROPOSED CONSERVATION EASEMENT BRUSH TOE PROTECTION (SEE SHEET D3) LOG SILL (SEE SHEET D3) VALLEY SILL (SEE SHEET D3) WOODY RIFFLE (SEE SHEET 4) STEP POOL (SEE SHEET 4) LOG STRUCTURE (PROFILE) ■ LCE m m m 1pres' 302 Jefferson Street, Suite 110 Raleigh, INC 27605 Main: 919.829.9909 Fax: 919.829.9913 www.res.us SEAL SCALE: AS SHOWN w Q o C) � N O N IL ti z O U H Z O z O o LL it O z LU o LU LL Q Q z o z O (n U) W J Y cc Q > W —JW W 2i cr cr D_ Z w 2 fw V Q Z U Z w > � Z W Q D ~ O 0 U Q Z Z ' O w z o D w w Q Z J Z — J � U Z_ "' O m c IL 0 PROJECT NUMBER: 100910 PROJECT MANAGER: BPB DESIGNED: AFM DRAWN: AFM CHECKED: BPB SHEET NUMBER: 1 \\ \ EXISTI'MGLOG SICLZO BE REMOVED-`-\ \ REACH UT2 STA 3+70 TO STA 9+20 ANSQRESET ALAN ELEV-.;7-=.580.Z,-1G \ \ \ \ \ \ \ \ I STALL�N,GLED LO�STEP�'O L \ \ \ / � I G.O'-7.0' TC P OF BANK ELEV. +QQ INST VALLEY SI,�L 1 \\ \ \ \ \ TYPICAL RIFFLE CROSS SECTION ��_ i— Jr ` _ — _ �— �/ ✓ — — \ \ \ \ \I ,— — 3.5' 1 .0'-1 .5' TOP OF BANK ELEV. 63 7 00 NOTCH Do P\ If \ �_ PROPOSED RI FELE CROSS -SIGN REAC L U T 2 - 2 \ \ — \ \ \ \ \� \ \ \ \ rL f \\ TYPICAL RIGHT MEANDER CROSS SECTION lir LO 00 5+08 \ \� I I� G.0'-7.0' 1 .O'-1 .5' 3.5' - - \ 9+00 I 7— TOP OF BANK ELEV. \ \ MOPQSED MONITORING \� \ �\ \ � -� f-F�_ 1 \C�LM— I�� 0� _ \ RZ55ECTION AUtONS \ \ \ \ \ \ \ \ \ GRADE CHANNEL FROM�TA 4+28 STA 5+03 PER TYPICA I� ■ N SEC*TFON THIS SHEET. \ \ \ \ EXI TING MONI RING \ \ � \ \ ) I I CROSS-SECTI LOCATIONS �Q \ REACH UT2-A \ \ \ \ \ I �� \ \ \ / I - TYPICAL LEFT MEANDER CROSS SECTION I n REACH UT2-A STA 4+26 TO STA 5+03 5.0'-G.0' 1.5' 2.0' 3.0' TC P OF BANK ELEV. O Ln O TYPICAL CROSS SECTION 590 585 580 575 590 585 580 575 3+20 3+50 4+00 4+50 5+00 5+50 G+00 6+50 7+00 7+50 8+00 8+50 9+00 9+50 10+00 SCALE: HOP, 1 "=30'; VERT 1 "=3' 0 res, 302 Jefferson Street, Suite 110 Raleigh, INC 27605 Main: 919.829.9909 Fax: 919.829.9913 www.res.us SEAL FULL SCALE: 1 "=30 0 30 60 2" = FULL SCALE 1 " = HALF SCALE I\ w Q� p o N O N J IL O z 0 U F - z 0 z O o LL a � cc O TA: +2 .24 Z U LU 0 !Y LL w Q Q Zp Z o O Lu U) W J W Y(n or Q > W J W _ cr cr ELE :57 .00 LU2 W (D z C) J Q 2 z IL O z a_ � I O 0 U TA: + 17.97 Qz Q i O W — (D z N 0 � � W Lu J Z z J LEV 578.50 Z IU U o O Q rr � p PROJECT NUMBER: 100910 PROJECT MANAGER: BPB DESIGNED: AFM DRAWN: AFM CHECKED: BPB SHEET NUMBER: 2 I 51A:4-1-05.57 I EV: 79. 0 I E STA 3+C 1.97 EL V:5 0.0 ST :3+ 9. 5 E EV:5 9.50 I STA: +0 .32 X15TING RAD PR PO ED P ELE :57 .28 LON G 5T REA C I OF BAN CENTE RLINE ST :G 199. EL V:5 G.5 TA:9+42 02 LEV 575 GG _ ✓\ / �v \ O- + Ln `t II +tn O� II —� �—� C9 N 6) tow Q II +� II II -� �� _ ALO ch +tn �� II II tnw Q J—II II-Q� LU Q>LLJ nw II r� Q,L-+� �� II cnw II II Qw �� cnw N�Dn II +amu C PRO OSE ANN LBED +�n �n II II I� 9 +� O� `° II �"' II II Q +�n +rn II-��-�0 II a +tn a --m m Ln m0 °� � II "' Ln N� ' II _ <o�- —�Q �� O �6 "'IIQw -r- +n nw II; Q F� (n W II �nw Q J to w II J _c w Qw Qw O II Qw �— II U7w U)w l�� II II II Qw +�n cp II II II w �� �� II >—�+�n—II j Q II H� In II W In W J tnw Q w to W U� W J -j U�w Nw Q J �w Qw cn w Q> nw w 590 585 580 575 3+20 3+50 4+00 4+50 5+00 5+50 G+00 6+50 7+00 7+50 8+00 8+50 9+00 9+50 10+00 SCALE: HOP, 1 "=30'; VERT 1 "=3' 0 res, 302 Jefferson Street, Suite 110 Raleigh, INC 27605 Main: 919.829.9909 Fax: 919.829.9913 www.res.us SEAL FULL SCALE: 1 "=30 0 30 60 2" = FULL SCALE 1 " = HALF SCALE I\ w Q� p o N O N J IL O z 0 U F - z 0 z O o LL a � cc O Z U LU 0 !Y LL w Q Q Zp Z o O Lu U) W J W Y(n or Q > W J W cr cr z LU2 W (D z C) J Q 2 z IL O z a_ Q O 0 U Z Qz Q i O W — (D z N 0 � � W Lu J Z z J Z IU U o O Q rr � p PROJECT NUMBER: 100910 PROJECT MANAGER: BPB DESIGNED: AFM DRAWN: AFM CHECKED: BPB SHEET NUMBER: 2 c m E LL m O LU Q U) 3 w J_ LL CHANNEL BC--" OF COARSE BAC NON -W GEOTEXTILE Fi (NCDOT T' TOE PROTECTION CHANNEL TOP OF BANK POOL FLOW COIR MATTIN" HEADER LO FOOTER LO TYPICAL PLAN VIEW PROPOSED FLOW x BACKFILL WITH COARSE AGGREGATE (I " TO 4" DIA.) \ NON -WOVEN GEOTEXTILE FABRIC (NCDOT TYPE II) 0 PROPOSED STREAM BED FLOW MIN. 5.0' BACKFILL WITH COARSE / L AGGREGATE (I " TO 5" DIA.) NON -WOVEN GEOTEXTILE FABRIC TACK FABRIC (NCDOT TYPE II) TO LOG TACK FABRIC TO LOG SECTION B -B INSTALL COIR MATTING PER DETAIL SEE DWG D I KEY COIR MATTING INTO BANK—\COMPACTED SOIL LIFT INTO BANK MIN 2.0' LIVE STAKES 114 MAX POOL DEPTH LIVE CUTTINGS SMALL BRANCHES i // AND BRUSH ..R, 4' MIN. LENGTH) OR DUCKBILL ANCHORS INSTALLED PER MANUFACTURERS INSTRUCTIONS (TYP.) LOG SILL NTS NWS //\\//\\/ \�\\�\\�\ \\\\�\ fK,\ CHANNELTOP OF BANK CHANNEL L,—, , BRUSH TOE OF BANK NTS TYPICAL PLAN VIEW REBAR OR DUCKBILL ANCHOR /// /_ BACKFILL WITH COARSE AGGREGATE (I " TO 5" DIA.) SEE PROFILE FOR POOL DEPTH SECTION A -A (OPT 1) REBAR OR DUCKBILL ANCHOR SCOUR POOL SEE PROFILE FOR POOL DEPTH i���i�\��i iii✓��i�i��i SECTION A -A (OPT 2) NOTES: I . LOGS SHOULD BE RELATIVELY STRAIGHT HARDWOOD AND RECENTLY HARVESTED 2. HIGH SIDE OF LOG SHALL BE APPROX. 0.2' HIGHER THAN LOW END 3. LOG DIMENSIONS: MIN DIAM. = 10", MIN LENGTH = 12' NAIL FILTER FABRIC USING 3" 1 OD GALVANIZED COMMON NAIL EVERY 1 .5' ALONG THE LOG 4. DUCKBILL ANCHORS MAY BE USED IN PLACE OF REBAR NOTES: I . OVER EXCAVATE THE OUTSIDE BEND OF THE CHANNEL. INSTALL SMALLER BRANCHES AND BRUSH AND COMPACT LIGHTLY TOGETHER. BACKFILL AND COMPACT TO LOCK IN PLACE. TOP OF BANK 2. PLACE LIVE CUTTINGS OVER THE SMALL BRANCHES AND BRUSH. ACCEPTABLE LIVE CUTTINGS SPECIES INCLUDE BLACK WILLOW (SALIX NIGRA) AND SILKY WILLOW (SALIX SERICEA). WILLOW CUTTINGS SHOULD BE RINSED AT CUTTING POINT TO ALLOW BETTER ROOTING. 77 3. INSTALL EROSION CONTROL (COIR) MATTING OVER COMPACTED SOIL PER DIRECTION OF ENGINEER. COIR MATTING SHOULD BE KEYED INTO TOP OF BANK. 4. INSTALL I TO 3 ROWS OF LIVE STAKES ABOVE THE LIVE CUTTINGS LAYER PER DIRECTION OF ENGINEER. TTING C r� FLOW TYPICAL PLAN VIEW NOTES: I . LOGS SHOULD BE RELATIVELY STRAIGHT HARDWOOD AND RECENTLY HARVESTED. 2. LOG DIMENSIONS: MIN DIAM. = 10", MIN LENGTH = 40' 3. NAIL FILTER FABRIC USING 3" 1 OD GALVANIZED COMMON NAIL EVERY 1 .5' ALONG ENTIRE LENGTH OF THE LOG. 4. DUCKBILL ANCHORS MAY BE USED IN PLACE OF REBAR. PROPOSED STREAM BED FLOW MIN G.0' COARSE AGGREGATE HEADER LOG FOOTER LOG VALLEY -91 LL NTS r REBAR OR DUCKBILL ANCHOR MIN 4.0', BACKFILL (I TO 4) i NON -WOVEN GEOTEXTILE FABRIC (NCDOT TYPE II) TACK FABRIC TO LOG PROPOSED STREAM BANK NOTES: I . LOGS SHALL BE OF A MINIMUM OF 1 5' IN LENGTH AND 10" IN DIAMETER AND RELATIVELY STRAIGHT HARDWOOD, RECENTLY HARVESTED. 2. A SINGLE LOG MAY BE USED IN LIEU OF A HEADER/FOOTER LOG COMBINATION, PER DIRECTION OF DESIGNER. 3. FILTER FABRIC SHALL BE USED TO SEAL THE GAPS BETWEEN THE LOG(S) AND THE STREAM BED, UNDER THE TOP OF BANK COARSE BACKFILL MATERIAL. THERE SHALL BE NO FILTER FABRIC VISIBLE IN THE FINISHED WORK; EDGES SHALL BE FOLDED, TUCKED, OR TRIMMED AS NEEDED. 4. COARSE BACKFILL SHALL BE PLACED TO A THICKNESS EQUAL TO THE DEPTH OF THE HEADER (AND ANY FOOTER) LOGS AND SHALL EXTEND OUT FROM THE VANE ARMS TO THE STREAM BANK AND UPSTREAM. 5. AS AN OPTION, FLAT -SIDED BOULDERS MAY BE PLACED AS BALLAST ON TOP OF THE STREAM BANK SIDE OF THE EMBEDDED VANE ARMS. DUCK BILL ANCHORS MAY BE USED IN LIEU OF BALLAST BOULDERS. G. DUCKBILL ANCHORS WITH GALVANIZED CABLE ATTACHED MAY BE USED TO SECURE LOGS INTO THE STREAM BED AND/OR BANKS. FLAT SIDED BOULDERS CAN BE USED IN LIEU OF THE LOG INVERT/DUCKBILL ANCHOR SYSTEM. TIE-IN TO STREAM BED (TYP.) STEP ELEVAT'—" CONTROL PC FLOW COARSE AGGREGA BACKFILL ( I " TO PROFILE TOP OF BANK BALLAST BOULDER i\\ HEADER LOG FOOTER LOG STEP ELEVATION CONTROL POINT 4'M IN (TYP) UPSTREAM POOL ELEVATION CONTROL POINT SECTION VIEW ANGLED LOG STEP POOL NT�J LOG SECTION B -B COARSE AGGREGATE (I"TO4") REBAR (5/8" MIN. DIAMETER, 4' MIN. LENGTH) OR DUCKBILL ANCHORS INSTALLED PER MANUFACTURERS INSTRUCTIONS (TYP.) PLAN VIEW STREAM BANK PROTECTION POOL ELEVATION CONTROL POINT HEADER LOG TIE-IN TO STREAM BANK (TYP.) STEP ELEVATION CONTROL POINT pres 302 Jefferson Street, Suite 110 Raleigh, INC 27605 Main: 919.829.9909 Fax: 919.829.9913 www.res.us SEAL SCALE: AS SHOWN w a C) � N O co IL ti Z O 1- U I— Z 0 z O O LL 0- F O 0 LU f O� LU Q Q z L Z O (n Lu U) W J Y cc> < Lu —jW LuZ w 2iz w Ur J QO Z Q Q U w O J Q Z Q �__ 0 Z LU D CD O 0 U w w � z J Z z O H J Z LU O Q 0 PROJECT NUMBER: 100910 PROJECT MANAGER: BPB DESIGNED: AFM DRAWN: AFM CHECKED: BPB SHEET NUMBER: 3 A TOP OF BANK TOE OF BANK FLOW PLAN VIEW 0.75' MIN JK 4.0' TYP RIFFLE MATERIAL; MIX OF WOODY DEBRIS (LOGS, BRANCHES, AND BRUSH) AT 50%, AND ROCK RIFFLE MATERIAL MATERIAL (SEE NOTES) AT 50% BEGIN RIFFLE CONTROL POINT THALWEG FLOW NOTES: I . CONSTRUCTED WOOD RIFFLES SHALL BE INSTALLED IN NEWLY GRADED CHANNEL SECTIONS, AS SPECIFIED BY THE DESIGNER. ELEVATION CONTROL POINTS SHALL BE DESIGNATED AT THE BEGINNING AND END OF RIFFLE POINTS TO ESTABLISH PART OF THE PROFILE OF THE CHANNEL. SURVEY OF CONTROL POINTS SHALL BE REQUIRED TO ESTABLISH ACCURATE RIFFLE INSTALLATION WITHIN A TOLERANCE OF ±0.2'. 2. RIFFLE MATERIAL SHALL BE COMPRISED OF A 50/50 MIX OF WOODY MATERIAL AND ROCKS. WOODY MATERIAL SHALL CONSIST OF LOGS, BRANCHES, AND BRUSH NO GREATER THAN 3" IN DIAMETER. THE ROCK MATERIAL SHALL CONSIST OF AN EQUAL MIX OF #5 / #57 STONE AND SURGE STONE. 3. THE PLACEMENT OF RIFFLE MATERIAL SHALL BE DONE IN A MANNER TO CREATE A SMOOTH PROFILE, WITH NO ABRUPT "JUMP" (TRANSITION) BETWEEN THE UPSTREAM POOL -GLIDE AND THE RIFFLE, AND LIKEWISE NO ABRUPT "DROP" (TRANSITION) BETWEEN THE RIFFLE AND THE DOWNSTREAM RUN -POOL. THE FINISHED CROSS SECTION OF THE RIFFLE MATERIAL SHALL GENERALLY MATCH THE SHAPE AND DIMENSIONS SHOWN ON THE RIFFLE TYPICAL SECTION. 4. THE END OF RIFFLE CONTROL POINT MAY TIE IN TO ANOTHER IN -STREAM STRUCTURE (LOG SILL OR J -HOOK). 5. THE CONSTRUCTED RIFFLE SHALL BE KEYED IN TO THE STREAM BANKS AND/OR BED AS DESIGNATED BY THE DESIGNER. THE "KEY" SHALL EXTEND BEYOND THE TOP OF BANK AT THE BEGINNING (CREST) OF THE RIFFLE. WHERE PRESERVATION OF EXISTING STREAM BANK VEGETATION 15 A PRIORITY A "KEY" MAY NOT BE USED (OR THE DIMENSIONS MAY BE ADJUSTED) TO LIMIT DISTURBANCE. LU J LL CHANNEL BOTTOM WIDTH //\//\//\//\//\//\//\� CROSS SECTION A -A' VARIES . \ VARIES FLOW VARI E5 PROFILE WOODY KI LLLL NTS TMPTOP OF BANK 77, / PROPOSED TOE OF BANK RIFFLE MATERIAL; MIX OF WOODY DEBRIS (LOGS, BRANCHES, AND BRUSH) AT 50%, AND ROCK MATERIAL AT 50% PROPOSED TOP OF BANK END RIFFLE CONTROL POINT THALWEG 1pres' 302 Jefferson Street, Suite 110 Raleigh, INC 27605 Main: 919.829.9909 Fax: 919.829.9913 www.res.us SEAL SCALE: AS SHOWN w Q C) � N O N IL ti z _O H U H z O z O O LL it O z LU o LU ILL Q Q z o z O (n U) W J Y cc Q > W _jW W 2i cr cr D_ Z LU 2iz LU Ur J Q Z Q Q U w = > 10� cn O J Q Z < LUQ 1 Z W D CD O w � z J Z z Q H w J Z o 0- D n a o PROJECT NUMBER: 100910 PROJECT MANAGER: BPB DESIGNED: AFM DRAWN: AFM CHECKED: BPB SHEET NUMBER: 4 U.S. ARMY CORPS OF ENGINEERS WILMINGTON DISTRICT Action ID: SAW -2012-01079 County: Union USGS Quad: NC -Bakers GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION Owner/Applicant: North Carolina Ecosystem Enhancement Program Attn: Mr. Lin Xu Address: 1652 Mail Service Center Raleigh, NC 27699-1652 Authorized Agent: Environmental Banc & Exchange Attn: David Godley Address: 909 Cappability Drive Raleigh, NC 27606 Size and location of property (waterbody, road name/number, town, etc.): The project (Poplin Ridge Mitigation Site) is located east and west of Poplin Ridge Road, north of Secrest Short Cut Road, in Union County, NC. Site Coordinates: 35.0516 °N -80.5700 °W Waterway: East Fork Stewarts Creek River Basin: Yadkin Description of project area and activity: This permit authorizes stream channel relocation, excavation, mechanized land clearing, the placement of fill material associated with the construction of the Poplin Ridge Mitigation Project. Authorized impacts to waters of the U.S. are identified on the table on page 2 of this authorization. Applicable Law: ® Section 404 (Clean Water Act, 33 USC 1344) ❑ Section 10 (Rivers and Harbors Act, 33 USC 403) Authorization: Nationwide or Regional General Permit Number(s): 27 SEE ATTACHED NATIONWIDE CONDITIONS AND SPECIAL CONDITIONS ON PAGE 2 OF THIS FORM Your work is authorized by the above referenced permit provided it is accomplished in strict accordance with the attached conditions and your submitted application and attached information dated August 18, 2014. Any violation of the attached conditions or deviation from your submitted plans may subject the permittee to a stop work order, a restoration order and/or appropriate legal action. • This verification will remain valid until the expiration date identified below unless the nationwide authorization is modified, suspended or revoked. If, prior to the expiration date identified below, the nationwide permit authorization is reissued and/or modified, this verification will remain valid until the expiration date identified below, provided it complies with all requirements of the modified nationwide permit. If the nationwide permit authorization expires or is suspended, revoked, or is modified, such that the activity would no longer comply with the terms and conditions of the nationwide permit, activities which have commenced (i.e., are under construction) or are under contract to commence in reliance upon the nationwide permit, will remain authorized provided the activity is completed within twelve months of the date of the nationwide permit's expiration, modification or revocation, unless discretionary authority has been exercised on a case-by-case basis to modify, suspend or revoke the authorization. • Activities subject to Section 404 (as indicated above) may also require an individual Section 401 Water Quality Certification. You should contact the NC Division of Water Resources (telephone 919-807-6300) to determine Section 401 requirements. • For activities occurring within the twenty coastal counties subject to regulation under the Coastal Area Management Act (LAMA), prior to beginning work you must contact the N.C. Division of Coastal Management. • This Department of the Army verification does not relieve the permittee of the responsibility to obtain any other required Federal, State or local approvals/permits. • If there are any questions regarding this verification, any of the conditions of the Permit, or the Corps of Engineers regulatory program, please contact Todd Tugwell at telephone (919) 846-2564. �— - TUGWELL.TODD.JASON.1048429 293 Corps Regulatory Official: 2014.10.07 13:37:56 -04'00' Date: October 7, 2014 Expiration Date of Nationwide Permit Verification: March 18, 2017 Page 1 of 3 Summary of Authorized Impacts and Required Mitigation Oen Water (ac) Wetland (ac) Unimportant Steam (If) Important Stream (If) NWP / GP # Temporary Permanent Temporary Permanent Temporary Permanent Temporary Permanent 27 0 0 0.008 0.007 0 0 8,234 0 Im act Totals 1 0 0 0.008 1 0.007 1 0 0 1 8,234 0 Total Loss of Waters of the U.S. (ac) 0.007 Total Loss of Waters of the U.S. (If) 0 Required Wetland Mitigation ac 0 f Required Stream Mitigation 1 0 Additional Remarks and/or Special Permit Conditions: 1. This Nationwide Permit verification does not imply approval of the suitability of this property for compensatory wetland mitigation for any particular project. The use of any portion of this site as compensatory mitigation for a particular project will be determined during our public interest review and 404 (b) (1) Guidelines analysis during the permit review process for that project. Copy Furnished: The Wilmington District is committed to providing the highest continue to do so, please complete the Customer http://rei ulatory.usacesurvey.com/ to complete the survey online Page 2 of 3 level of support to the public. To help us ensure we Satisfaction Survey located at our website at Determination of Jurisdiction A. ® Based on preliminary information, there appear to be waters of the US including wetlands within the above described project area. This preliminary determination is not an appealable action under the Regulatory Program Administrative Appeal Process (Reference 33 CFR Part 331). B. ❑ There are Navigable Waters of the United States within the above described project area subject to the permit requirements of Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act. Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. C. ❑ There are waters of the US and/or wetlands within the above described project area subject to the permit requirements of Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. D. ❑ The jurisdictional areas within the above described project area have been identified under a previous action. Please reference the jurisdictional determination issued on (Action ID: ). Basis of Jurisdictional Determination: The site exhibits stream channels with Ordinary High Water Marks and wetlands meeting the criteria as defined in the 1987 Corps Wetland Delineation Manual and appropriate Regional Supplement. E. Attention USDA Program Participants: This delineation/determination has been conducted to identify the limits of Corps' Clean Water Act jurisdiction for the particular site identified in this request. The delineation/determination may not be valid for the wetland conservation provisions of the Food Security Act of 1985. If you or your tenant are USDA Program participants, or anticipate participation in USDA programs, you should request a certified wetland determination from the local office of the Natural Resources Conservation Service, prior to starting work. F. Appeals Information (This information applies only to approved jurisdictional determinations as indicated in B and C above): This correspondence constitutes an approved jurisdictional determination for the above described site. If you object to this determination, you may request an administrative appeal under Corps regulations at 33 CFR Part 331. Enclosed you will find a Notification of Appeal Process (NAP) fact sheet and request for appeal (RFA) form. If you request to appeal this determination you must submit a completed RFA form to the following address: US Army Corps of Engineers South Atlantic Division Attn: Jason Steele, Review Officer 60 Forsyth Street SW, Room 1OM15 Atlanta, Georgia 30303-8801 Phone: (404) 562-5137 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 . It is not necessary to submit an RFA form to the District Office if you do not object to the determination in this correspondence. — - TUGWELL.TODD.JASON.104842929 3 Corps Regulatory Official: 2014.10.07 13:38:59 -04'00' Date: October 7, 2014 Expiration Date of Jurisdictional Determination: October 7, 2019 Page 3 of 3 WILMINGTON DISTRICT POST -CONSTRUCTION COMPLIANCE FORM Action ID Number: SAW -2012-01079 County: Union Permittee: North Carolina Ecosystem Enhancement Program Attn: Mr. Lin Xu Date Permit Issued: October 7, 2014 Project Manager: Todd Tugwell Upon completion of the activity authorized by this permit and any mitigation required by the permit, sign this certification and return it to the address of the Regulatory Field Office indicated below: ® Asheville Regulatory Field Office US Army Corps of Engineers 151 Patton Avenue, Room 208 Asheville, North Carolina 28801-5006 ❑ Raleigh Regulatory Field Office US Army Corps of Engineers 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 ❑ Washington Regulatory Field Office US Army Corps of Engineers 2407 West Fifth Street Washington, NC 27889 ❑ Wilmington Regulatory Field Office US Army Corps of Engineers 69 Darlington Avenue Wilmington, NC 28403 Please note that your permitted activity is subject to a compliance inspection by a U. S. Army Corps of Engineers representative. If you fail to comply with this permit you are subject to permit suspension, modification, or revocation. I hereby certify that the work authorized by the above referenced permit has been completed in accordance with the terms and condition of the said permit, and required mitigation was completed in accordance with the permit conditions. Signature of Permittee Date QT,l WNW North Carolina Department of Environment and Pat McCrory Governor Mr. Lin Xu Ecosystem Enhancement Program 1652 Mail Service Center Raleigh, NC 27699 RECEIVED SEF 1 1 2014 NC: ECUS'; STEty, ENHANCEMENT PS'.0 GRr^-M Natural Resources John E. Skvarla, III Secretary September 9, 2014 DWR# 13-1087 Union County Subject: APPROVAL of 401 Water Quality Certification with Additional Conditions Poplin Ridge Stream Restoration Dear Mr. Xu: You have our approval, in accordance with the General Certification and those conditions listed below, for the purpose proposed in your application dated August 18, 2014, and received by the Division of Water Resources (the Division) on August 21, 2014. After reviewing your application, we have determined that this project is covered by Water Quality General Certification Number 3885, which can be viewed on our web site at http://portal.ncdenr.org/web/wq/swp/ws/401. The General Certification allows you to use Nationwide Permit Number 27 once it is issued to you by the U.S. Army Corps of Engineers (COE). Please note that you should get any other federal, state or local permits before proceeding with your project, including those required by (but not limited to) Sediment and Erosion Control, Non -Discharge, and Water Supply Watershed regulations. The above noted Certification will expire when the associated 404 permit expires unless otherwise specified in the General Certification. In addition to the requirements of the certification, you must also comply with the following conditions: 1. The Mooresville Regional Office shall be notified in writing once construction at the approved impact areas has commenced. 2. Approved Impacts: Type of Impact Amount Approved Amount Approved Temporary Impact Permanent Impact Wetlands 0.008 0.007 acre Stream 8,234 linear ft. 0 3. This approval is only valid for the purpose and design that you described in your application. If you change your project, you must notify us in writing, and you may be required to send us a new application for a new certification. 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. 1617 Mail Service Center, Raleigh, North Carolina 27699-1650 Phone: 919-607-63001 Internet: www.ncdenr.gov An Equal Opportunity 1 Affirmative Action Employer- Made in part by recycled paper 4. Properly sized and fitted stone shall be utilized for the construction of cross vanes. 5. Riffle runs shall be constructed to ensure that normal stream flow is over the riffle, rather than "through" the riffle. 6. Existing stream substrate should be utilized to seed the new channel to the maximum extent practicable. 7. Diversion Ditches and other storm water conveyances as related to the sediment and erosion control measures shall be matted and/or stabilized to reduce sediment loss and turbidity. This includes interior/exterior slopes of sediment basins. 8. Stormwater discharge structures at this site shall be constructed in a manner such that the potential receiving streams (of the discharge) will not be impacted due to sediment accumulations, scouring or erosion of the stream banks. 9. Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent practicable. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored within two months of the date the Division of Land Resources has released the project. 10. Upon completion of the project, the applicant shall complete and return the enclosed "Certificate of Completion" form to the 401/Wetlands Unit of the Division. 11. Continuing Compliance. The applicant (Ecosystem Enhancement Program) shall conduct all activities in a manner so as not to contravene any state water quality standard (including any requirements for compliance with section 303(d) of the Clean Water Act) and any other appropriate requirements of state 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 15 A NCAC 2H.0507(d). Before codifying the certification, the Division shall notify the applicant and the US Army Corps of Engineers, provide public notice in accordance with 15A NCAC 2H.0503, and provide opportunity for public hearing in accordance with 15A NCAC 2H.0504. Any new or revised conditions shall be provided to the applicant 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. This Certification can be contested as provided in Articles 3 and 4 of the General Statute 150B by filing a written petition for an administrative hearing to the Office of the Administrative Hearings (hereby known as OAH). A petition form may be obtained from the OAH at htt�://www.ncoah.com/or by calling the OAH Clerk's Office at (919) 431-3000. Within sixty (60) calendar days of receipt of this notice, a petition must be filed with the OAH. A petition is considered filed when the original and one (1) copy along with any applicable OAH filing fee is received in the OAH during normal office hours (Monday through Friday, 8:00 am to 5:00 pm, excluding state holidays). The petitions maybe faxed to the OAH at (919) 431-3100, provided the original and one (1) copy of the petition along with any applicable OAH filing fee is received by the OAH within five (5) business days following the faxed transmission. Mailing address for the OAH: If sending via US Postal Service: Office of Administrative Hearings 6714 Mail Service Center Raleigh, NC 27699-6714 If sending via delivery service (UPS, FedEx, etc.) Office of Administrative Hearings 1711 New Hope Church Rd. Raleigh, NC 27609-6285 One (1) copy of the petition must also be served on DENR as follows: Mr. Lacy Presnell, General Counsel Department of Environment and Natural Resources 1601 Mail Service Center Raleigh, NC 27699-1601 This letter completes the review by the Division under Section 401 of the Clean Water Act. If you have any questions, please telephone Mr. Alan Johnson in the Mooresville Regional Office at 704-663-1699 or Ms. Karen Higgins in the Central Office in Raleigh 919-807-6360. Sincerely, for Thomas A. Reeder Attachments cc: Army Corps of Engineers, Asheville Karen Higgins, Wetlands Unit David Godley, Env. Banc & Exchange, 909 Capability Dr. Raleigh, 27606 MRO, Land Quality CERTIFICATE OF COMPLETION NCDWR Project No.: Applicant: Project Name: Date of Issuance of 401 Water Quality Certification: County: 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 this certificate to the 401 Transportation Permitting Unit, North Carolina Division of Water Resources, 1650 Mail Service Center, Raleigh, NC, 27699-1650. This form may be returned to NCDWR by the applicant, the applicant's authorized agent, or the project engineer. It is not necessary to send certificates from all of these. Applicant's Certification I, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Agent's Certification Date: I, , hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature: Engineer's Certification Partial Final I, as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of the 401 Water Quality Certification and Buffer Rules, the approved plans and specifications, and other supporting materials. Signature Date Registration No. �D-