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HomeMy WebLinkAbout20221471 Ver 1_SAW-2022-01047 (Flatiron Forest) NWP 29 Verification_20221221Baker, Caroline D From: Norton, April R CIV USARMY CESAW (USA) <April.R.Norton@usace.army.mil> Sent: Wednesday, December 21, 2022 2:21 PM To: Trone, Rick Cc: Thomas, Zachary T Subject: [External] SAW-2022-01047 (Flatiron Forest Subdivision) Nationwide Permit 29 Verification CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to Report Spam. Dear Rick Trone, Attached to this message is your requested Section 404 permit authorization for the following project: Flatiron Forest Subdivision in Pittsboro, Chatham County, North Carolina Also attached are the corresponding regional and general conditions and a copy of the permit compliance certification. Please note that the attached conditions must be strictly adhered to for this permit authorization to remain valid and that the compliance certification must be returned to this office when the work is completed. This electronic copy is your official Department of the Army Notification; no paper copy will be mailed, unless specifically requested. Please contact me if you have any questions or concerns regarding this permit verification. Thanks. April R. Norton Regulatory Division US Army Corps of Engineers 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 Phone: (919) 441-3637 Fax: (919) 562-0421 Email: April.R.Norton@usace.army.mil U.S. ARMY CORPS OF ENGINEERS WILMINGTON DISTRICT Action Id. SAW-2022-01047 County: Chatham U.S.G.S. Quad: NC-Bynum GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION Permittee: RBV 1525, LLC. Attn: Rex Vick, Jr. Address: 3434 Kildaire Farm Road Cary, North Carolina 27518 Telephone Number: 919.868.4924 E-mail: rvick@windjamdevelopment.com Size (acres) ~42 Nearest Town Fearrington Nearest Waterway Haw River River Basin Cape Fear USGS HUC 03030002 Coordinates Latitude: 35.7963 Longitude: -79.1293 Location description: The project area is located at 678 Hamlets Chapel Road in Pittsboro, Chatham County, North Carolina. Description of projects area and activity: This verification authorizes the permanent discharge of fill material into 0.098 acre of riparian, non-riverine wetlands and 89 linear feet (0.006 acre) of stream channel with 64 linear feet (0.004 ac) resulting in a loss of waters of the US. The temporary discharge of fill material into 0.042 acre of wetlands and 25 linear feet (0.001 acre) is also required. These impacts are necessary for the Flatiron Forest Subdivision development. Applicable Law(s): ܈Section 404 (Clean Water Act, 33 USC 1344) ܆Section 10 (Rivers and Harbors Act, 33 USC 403) Authorization: Nationwide Permit 29 – Residential Development SEE ATTACHED NWP GENERAL, REGIONAL, AND/OR SPECIAL CONDITIONS Your work is authorized by the above referenced permit provided it is accomplished in strict accordance with the attached Conditions, your application signed and dated 10/21/2022, and the enclosed plans “Flatiron Forest – Impact Maps” dated 9/22/2022. Any violation of the attached conditions or deviation from your submitted plans may subject the permittee to a stop work order, a restoration order, a Class I administrative penalty, and/or appropriate legal action. This verification will remain valid until the expiration date identified below unless the nationwide and/or regional general permit authorization is modified, suspended or revoked. If, prior to the expiration date identified below, the nationwide and/or regional general 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 and/or regional general 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 and/or regional general permit, will remain authorized provided the activity is completed within twelve months of the date of the nationwide and/or regional general 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 (CAMA), prior to beginning work you must contact the N.C. Division of Coastal Management Morehead City, NC, at (252) 808-2808. 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 April Norton at 919-441-3637or April.R.Norton@usace.army.mil. Corps Regulatory Official: _____________________________________________________Date: 12/21/2022 Expiration Date of Verification: 3/14/2026 The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we continue to do so, please complete the Customer Satisfaction Survey located at http://corpsmapu.usace.army.mil/cm_apex/f?p=136:4:0 Copy furnished: Agent: WithersRavenel Attn: Rick Trone Address: 115 MacKenan Drive Cary, North Carolina 27511 Telephone Number: 919.538.8184 E-mail: rtrone@withersravenel.com Property Owner: Chatham Land & Timber LLC. & Margaret Browning Attn: Richard Danek Address: 981 Old Graham Pittsboro, North Carolina 27312 Telephone Number: 919.868.4924 E-mail: rvick@windjamdevelopment.com Action ID Number: SAW-2022-01047 County: Chatham Permittee: RBV 1525, LLC., Attn: Rex Vick, Jr. Project Name: Flatiron Forest Subdivision Date Verification Issued: 12/21/2022 Project Manager: April Norton Upon completion of the activity authorized by this permit and any mitigation required by the permit, sign this certification and return it to the following address: US ARMY CORPS OF ENGINEERS WILMINGTON DISTRICT Attn: April Norton Raleigh Regulatory Office U.S Army Corps of Engineers 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 or April.R.Norton@usace.army.mil Please note that your permitted activity is subject to a compliance inspection by a U. S. Army Corps of Engineers representative. Failure to comply with any terms or conditions of this authorization may result in the Corps suspending, modifying or revoking the authorization and/or issuing a Class I administrative penalty, or initiating other appropriate legal action. 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 WithersRavenel Our People. Your Success. IMPACT EXHIBITS H A M E L T S C H A P E L R O A D U 440 44 5 4 5 0 440 445 44 5 44 5 47 5 470 475 470 470 4 6 5 4 7 0 47 5 4 8 0 4 5 0 4 5 5 4 6 0 4 6 5 47 0 4 7 0 4 7 0 475 4 7 5 4 7 5 475 45 0 45 5 4 6 0 4 6 5 4 6 5 450 45 545545 5 46 0 4 6 5 445 450 45 5 460 440 445 450 45 5 46 0 465 470 475 445 450 455 460 46 5 470 475 48 0 O H E WE T L A N D A WE T L A N D B WE T L A N D C WE T L A N D D WE T L A N D E WE T L A N D F ST R E A M 1 (E P H E M E R A L ) ST R E A M 2 (P E R E N N I A L ) ST R E A M 3 (I N T E R M I T T E N T ) 50 ' W E T L A N D BU F F E R 50 ' W E T L A N D BU F F E R 50 ' W E T L A N D BU F F E R 70 ' Z O N E 2 B U F F E R 50 ' W E T L A N D BU F F E R 30 ' Z O N E 1 B U F F E R K:\22\22-0130\220132-Flatiron Forest\CAD\Exhibits\Impact Maps\Flatiron Forest Impact Maps.dwg- Wednesday, October 19, 2022 4:33:05 PM - CNURSEY our people • your success EST. 1983 WithersRavenel 115 MacKenan Drive | Cary, NC 27511 License #: F-1479 | t: 919.469.3340 | www.withersravenel.com In i t i a l P l a n D a t e : 0 9 / 2 2 / 2 2 Re v i s i o n s : WR J o b N o . 02 2 2 0 1 3 2 DA T E 09 / 2 2 / 2 2 638 HAMLETS CHAPEL ROAD | CHATHAM COUNTY, NC 27312 IMPACT MAPS FLATIRON FOREST DR N : T W D G N : T W C K D : C N OV E R A L L E X I S T I N G CO N D I T I O N S A 50 SC A L E : 1 i n c h = ft . 25050 HAM L E T S C H A P E L R D P L E A S A N T S P R I N G S R D HORIZON D R BUCK BRANCH RD PAR K E R H E R N D O N R D A M O U N T A I N VI E W GEORGE HELEN CIR H I G H W A Y 5 0 1 SI T E 1. B A S I S O F B E A R I N G S : N C S T A T E P L A N E G R I D C O O R D I N A T E S , N A D 8 3 ( 2 0 1 1 ) . 2. A L L D I S T A N C E S A R E H O R I Z O N T A L G R O U N D D I S T A N C E S I N U . S . S U R V E Y F E E T U N L E S S O T H E R W I S E N O T E D . 3. A R E A S S H O W N H E R E O N W E R E C O M P U T E D U S I N G T H E C O O R D I N A T E M E T H O D . 4. L I N E S N O T S U R V E Y E D A R E S H O W N A S B R O K E N L I N E S F R O M I N F O R M A T I O N R E F E R E N C E D O N T H E F A C E O F TH I S P L A T . 5. N O E V I D E N C E O F E A R T H M O V I N G W A S O B S E R V E D I N T H E P R O C E S S O F C O N D U C T I N G F I E L D W O R K O N S U B J E C T PA R C E L . 6. N O E V I D E N C E O F R E C E N T S T R E E T O R S I D E W A L K C O N S T R U C T I O N O R R E P A I R S O B S E R V E D I N T H E P R O C E S S OF C O N D U C T I N G F I E L D W O R K . 7. N O E V I D E N C E O F B U R I A L G R O U N D S W A S O B S E R V E D I N T H E P R O C E S S O F C O N D U C T I N G F I E L D W O R K . 8. P R O P E R T Y I S N O T L O C A T E D W I T H I N A F L O O D H A Z A R D A R E A A C C O R D I N G T O F L O O D I N S U R A N C E R A T E M A P 37 1 0 9 7 6 4 0 0 K D A T E D N O V E M B E R 1 7 , 2 0 1 7 . 9. I R O N P I P E S S E T A T A L L C O R N E R S U N L E S S O T H E R W I S E N O T E D . 10 . W E T L A N D / B U F F E R D E L I N E A T I O N P E R F O R M E D B Y W R O N 0 3 / 3 0 / 2 0 2 2 . 11 . S T R E A M / B U F F E R L O C A T I O N S A R E A P P R O X I M A T E , B A S E D O N G P S L O C A T I O N , C H A T H A M C O U N T Y D A T A , A N D TO P O G R A P H I C I N T E R P R E T A T I O N . 12 . B U F F E R S U B J E C T I V I T Y B A S E D O N C H A T H A M C O U N T Y W A T E R S H E D P R O T E C T I O N O R D I N A N C E . B U F F E R SU B J E C T I V I T Y W A S V E R I F I E D B Y C H A T H A M C O U N T Y O N 0 6 / 0 8 / 2 0 2 2 . 13 . D E L I N E A T I O N A N D J U R I S D I C T I O N A L S T A T U S W A S V E R I F I E D B Y U S A C E O N 0 7 / 0 6 / 2 0 2 2 ( S A W - 2 0 2 2 - 0 1 0 4 7 ) . GE N E R A L N O T E S VI C I N I T Y M A P N. T . S OS 18 OS 23 4 5 6 7 8 9 16 17 13 15 22 11 12 10 14 20 21 24 25 26 27 28 29 1 2 3 OS 19 H A M E L T S C H A P E L R O A D U O H E OS 18 OS 23 4 5 6 7 8 9 16 17 13 15 22 11 12 10 14 20 21 24 25 26 27 28 29 1 2 3 OS 19 L O D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LOD LOD LOD LO D LO D LOD LO D LO D LO D LOD LOD LOD LO D L O D LO D LO D LO D L O D LO D LO D LO D LOD LO D WE T L A N D A WE T L A N D B WE T L A N D C WE T L A N D D WE T L A N D E WE T L A N D F ST R E A M 1 (E P H E M E R A L ) ST R E A M 2 (P E R E N N I A L ) ST R E A M 3 (I N T E R M I T T E N T ) 50 ' W E T L A N D BU F F E R 50 ' W E T L A N D BU F F E R 50 ' W E T L A N D BU F F E R 70 ' Z O N E 2 B U F F E R 50 ' W E T L A N D BU F F E R 30 ' Z O N E 1 B U F F E R IM P A C T A R E A 2 MA P D IM P A C T A R E A 1 MA P C SC M 1 SC M 2 FL A T I R O N F O R E S T D R I V E C O P L E Y C O U R T K:\22\22-0130\220132-Flatiron Forest\CAD\Exhibits\Impact Maps\Flatiron Forest Impact Maps.dwg- Wednesday, October 19, 2022 4:33:07 PM - CNURSEY our people • your success EST. 1983 WithersRavenel 115 MacKenan Drive | Cary, NC 27511 License #: F-1479 | t: 919.469.3340 | www.withersravenel.com In i t i a l P l a n D a t e : 0 9 / 2 2 / 2 2 Re v i s i o n s : WR J o b N o . 02 2 2 0 1 3 2 DA T E 09 / 2 2 / 2 2 638 HAMLETS CHAPEL ROAD | CHATHAM COUNTY, NC 27312 IMPACT MAPS FLATIRON FOREST DR N : T W D G N : T W C K D : C N OV E R A L L S T R E A M & WE T L A N D I M P A C T MA P B 50 SC A L E : 1 i n c h = ft . 25050 26 1+00 0+00 0+00 1+00 44 7 44 8 449 4 4 5 44 6 44 7 440 44 5 4 5 0 440 445 44 5 44 5 445 450 440 445 450 5 W W W W W W W W W W W W W W W W W W W W 26 S F S F SF S F S F SF SF SF SF SF / T P SF / T P SF / T P T P T P T P TP T P TP TP TP T P TP TP TP TP TP S F SF SF SF S F SF SF SF L O D L O D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D L O D L O D L O D L O D L O D LO D L O D L O D L O D LO D LO D LO D LO D LO D LO D LOD LO D LO D LO D LO D LO D LO D 58 . 0 0 L F 72 " R C P @ 1 . 7 4 % 58 . 1 1 L F 54 " R C P @ 1 . 7 4 % ST R E A M C L TO P O F B A N K IM P A C T A R E A S 2 PE R M A N E N T S T R E A M I M P A C T S RO A D C R O S S I N G A N D G R A D I N G 64 L F ( 1 5 8 S F ) IM P A C T A R E A S 1 TE M P O R A R Y S T R E A M I M P A C T S TE M P O R A R Y C O N S T R U C T I O N A C C E S S 15 L F ( 3 1 S F ) IM P A C T A R E A S 3 PE R M A N E N T S T R E A M I M P A C T S RI P - R A P D I S S I P A T O R S T R E A M I N S T A L L A T I O N (N O F U N C T I O N A L L O S S ) 25 L F ( 5 5 S F ) IM P A C T A R E A W 1 TE M P O R A R Y W E T L A N D I M P A C T S TE M P O R A R Y C O N S T R U C T I O N A C C E S S 96 0 S F ( 0 . 0 2 2 A C ) IM P A C T A R E A W 3 TE M P O R A R Y W E T L A N D I M P A C T S TE M P O R A R Y C O N S T R U C T I O N A C C E S S 85 8 S F ( 0 . 0 2 0 A C ) IM P A C T A R E A W 2 PE R M A N E N T W E T L A N D I M P A C T S RO A D C R O S S I N G A N D G R A D I N G 3, 2 8 8 S F ( 0 . 0 7 5 A C ) IM P A C T A R E A S 4 TE M P O R A R Y S T R E A M I M P A C T S TE M P O R A R Y C O N S T R U C T I O N A C C E S S 10 L F ( 3 8 S F ) 40 ' P U B L I C DR A I N A G E EA S E M E N T LI M I T S O F D I S T U R B A N C E TR E E P R O T E C T I O N F E N C E TE M P O R A R Y DO W N S T R E A M CO F F E R D A M TE M P O R A R Y UP S T R E A M CO F F E R D A M TE M P O R A R Y SE D I M E N T B A G FL E X I B L E H O S E ST R E A M 1 (E P H E M E R A L ) WE T L A N D B LI M I T S O F D I S T U R B A N C E TR E E P R O T E C T I O N F E N C E SI L T F E N C E 40 ' P U B L I C DR A I N A G E EA S E M E N T ST R E A M 2 (P E R E N N I A L ) C O P L E Y C O U R T PU M P RI P - R A P S T I L L I N G B A S I N (S E E D E T A I L S H E E T E ) SI L T F E N C E PU M P TE M P O R A R Y PU M P A R O U N D 70 ' Z O N E 2 BU F F E R 30 ' Z O N E 1 BU F F E R 30 ' Z O N E 1 BU F F E R 70 ' Z O N E 2 BU F F E R 30 ' Z O N E 1 BU F F E R 30 ' Z O N E 1 BU F F E R UP S T R E A M C U L V E R T 43 0 43 5 44 0 44 5 45 0 43 0 43 5 44 0 44 5 45 0 0+ 0 0 0+ 5 0 1+ 0 0 DO W N S T R E A M C U L V E R T 43 0 43 5 44 0 44 5 45 0 43 0 43 5 44 0 44 5 45 0 0+ 0 0 0+ 5 0 1+ 0 0 NO T E : C U L V E R T T O B E B U R I E D 1' B E L O W S T R E A M B E D NO T E : C U L V E R T T O B E B U R I E D 1' B E L O W S T R E A M B E D IN V . I N =4 3 5 . 9 7 ST R E A M B E D =4 3 6 . 9 7 IN V . O U T =4 3 4 . 9 6 ST R E A M B E D =4 3 5 . 9 6 PR O P O S E D GR A D E EX I S T I N G GR A D E PR O P O S E D GR A D E EX I S T I N G GR A D E RI P - R A P B A S I N DI S S I P A T O R 72 " R C P 72 " R C P 54 " R C P 54 " R C P K:\22\22-0130\220132-Flatiron Forest\CAD\Exhibits\Impact Maps\Flatiron Forest Impact Maps.dwg- Wednesday, October 19, 2022 4:33:09 PM - CNURSEY our people • your success EST. 1983 WithersRavenel 115 MacKenan Drive | Cary, NC 27511 License #: F-1479 | t: 919.469.3340 | www.withersravenel.com In i t i a l P l a n D a t e : 0 9 / 2 2 / 2 2 Re v i s i o n s : WR J o b N o . 02 2 2 0 1 3 2 DA T E 09 / 2 2 / 2 2 638 HAMLETS CHAPEL ROAD | CHATHAM COUNTY, NC 27312 IMPACT MAPS FLATIRON FOREST DR N : T W D G N : T W C K D : C N ST R E A M & WE T L A N D I M P A C T MA P CSC A L E : 1 i n c h = ft . 01 5 3 0 30 IM P A C T L E G E N D TE M P O R A R Y S T R E A M PE R M A N E N T S T R E A M ( N O F U N C T I O N A L L O S S ) PE R M A N E N T S T R E A M ( F U N C T I O N A L L O S S ) PE R M A N E N T W E T L A N D S TE M P O R A R Y W E T L A N D S NT S TO P O F B A N K RI P R A P TO P O F R I P R A P TO M A T C H PR E - C O N S T R U C T I O N ST R E A M C O N T O U R RI P R A P A P R O N D E T A I L OS 17 15 4 7 5 475 4 7 5 47 4 4 7 4 47 4 47 5 470 475 470 470 4 465 465 470 470 470 50 ' W E T L A N D B U F F E R W W W W W W W W W W W W W W W W W W W W W W W OS 17 15 TP TP TP T P T P TP TP TP TP TP TP TP TP SF / T P SF / T P SF / T P SF/T P SF / T P S F / T P SF/TP TP TP SF / T P SF / T P SF / T P SF / T P SF / T P SF / T P OD LO D LO D LO D LO D LO D LO D L O D L O D LOD LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LOD LOD LOD LOD LOD LOD LOD LOD LOD LO D L O D LO D LO D LODLOD LOD LOD LOD LOD LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D LO D TP TP TP TP 74 . 8 8 L F 24 " R C P @ 4 . 6 1 % IM P A C T A R E A W 4 PE R M A N E N T W E T L A N D I M P A C T S RO A D C R O S S I N G A N D G R A D I N G 1, 0 1 0 S F ( 0 . 0 2 3 A C ) WE T L A N D C LI M I T S O F D I S T U R B A N C E TR E E P R O T E C T I O N F E N C E 40 ' P U B L I C DR A I N A G E EA S E M E N T FL A T I R O N F O R E S T D R I V E SC M 1 LI M I T S O F D I S T U R B A N C E TR E E P R O T E C T I O N F E N C E 70 ' Z O N E 2 ST R E A M B U F F E R K:\22\22-0130\220132-Flatiron Forest\CAD\Exhibits\Impact Maps\Flatiron Forest Impact Maps.dwg- Wednesday, October 19, 2022 4:33:11 PM - CNURSEY our people • your success EST. 1983 WithersRavenel 115 MacKenan Drive | Cary, NC 27511 License #: F-1479 | t: 919.469.3340 | www.withersravenel.com In i t i a l P l a n D a t e : 0 9 / 2 2 / 2 2 Re v i s i o n s : WR J o b N o . 02 2 2 0 1 3 2 DA T E 09 / 2 2 / 2 2 638 HAMLETS CHAPEL ROAD | CHATHAM COUNTY, NC 27312 IMPACT MAPS FLATIRON FOREST DR N : T W D G N : T W C K D : C N WE T L A N D I M P A C T MA P DSC A L E : 1 i n c h = ft . 01 5 3 0 30 IM P A C T L E G E N D TE M P O R A R Y S T R E A M PE R M A N E N T S T R E A M ( N O F U N C T I O N A L L O S S ) PE R M A N E N T S T R E A M ( F U N C T I O N A L L O S S ) PE R M A N E N T W E T L A N D S TE M P O R A R Y W E T L A N D S SL O P E R I P - R A P A T 2 : 1 T O EX I S T I N G I F P L A I N E N D WO (PIPE DIAMETER) (NOMINAL) 1 3 2:1 2:1 2:1 2:1 2: 1 LEVEL LB ( L E N G T H O F B A S I N ) LS ( L E N G T H O F P O O L ) LA ( L E N G T H O F A P R O N ) WB (WIDTH OF BASIN) DI S S I P A T O R P O O L (H O R I Z O N T A L F L O O R ) SLOP E T O M A T C H EXIS T I N G C H A N N E L AT E N D O F A P R O N SL O P E T O M A T C H EX I S T I N G C H A N N E L AT E N D O F A P R O N RI P - R A P L I N I N G SE E T A B L E F O R S I Z E A N D D E P T H LE V E L L E V E L RI P - R A P T O E X I S T I N G G R A D E AP R O N IN C I S E P I P E F O R A Q U A T I C P A S S A G E (S E E P L A N & T A B L E S F O R I N V E R T ) TW ( T A I L W A T E R ) YO YB LB ( L E N G T H O F B A S I N ) LS ( L E N G T H O F P O O L ) LA ( L E N G T H O F A P R O N ) CH A N N E L E L E V A T I O N (P I P E I N C I S E D ) T2 T1 T1 T1 RI P R A P T H I C K N E S S T1 = 2 d 50 O R 1 . 5 d MA X T2 = 3 d 50 O R 2 d MA X (S E E D I M E N S I O N T A B L E ) GE O T E X T I L E F A B R I C (N C D O T S T A N D A R D SP E C I F I C A T I O N SE C T I O N 1 0 5 6 - T Y P E 2 ) EN D O F A P R O N T O C O N F O R M TO E X I S T I N G S T R E A M C H A N N E L (I N C I S E R I P - R A P T O M A T C H EX I S T I N G C R O S S - S E C T I O N ) RI P R A P L I N I N G SE E T A B L E F O R S I Z E A N D D E P T H SE E P R O F I L E SE E P R O F I L E PL A N PR O F I L E 2 1 2 1 LE V E L IN C I S E P I P E F O R A Q U A T I C P A S S A G E (S E E P L A N & T A B L E S F O R I N V E R T ) RI P - R A P L I N I N G SE E T A B L E F O R S I Z E A N D D E P T H GE O T E X T I L E F A B R I C (N C D O T S T A N D A R D SP E C I F I C A T I O N SE C T I O N 1 0 5 6 - T Y P E 2 ) WO (P I P E D I A M E T E R ) (N O M I N A L ) 2 1 2 1 2 1 2 1 hS ( P O O L D E P T H ) PI P E B E Y O N D RI P - R A P L I N I N G SE E T A B L E F O R S I Z E A N D D E P T H GE O T E X T I L E F A B R I C (N C D O T S T A N D A R D SP E C I F I C A T I O N SE C T I O N 1 0 5 6 - T Y P E 2 ) WA T E R S U R F A C E P R O F I L E AT D E S I G N F L O W 2 1 2 1 PI P E B E Y O N D RI P - R A P L I N I N G SE E T A B L E F O R SI Z E A N D D E P T H GE O T E X T I L E F A B R I C (N C D O T S T A N D A R D S P E C I F I C A T I O N SE C T I O N 1 0 5 6 - T Y P E 2 ) LE V E L AP R O N (L E V E L ) PI P E B E Y O N D RI P - R A P L I N I N G SE E T A B L E F O R S I Z E A N D D E P T H GE O T E X T I L E F A B R I C (N C D O T S T A N D A R D SP E C I F I C A T I O N SE C T I O N 1 0 5 6 - T Y P E 2 ) WB ( W I D T H O F B A S I N ) (A T E N D O F A P R O N ) "A " "A " " B " "C " "D " "B " "C " "D " SE C T I O N " A - A " SE C T I O N " B - B " SE C T I O N " C - C " SE C T I O N " D - D " EN D O F A P R O N T O C O N F O R M T O E X I S T I N G ST R E A M C H A N N E L ( I N C I S E R I P - R A P T O MA T C H E X I S T I N G C R O S S - S E C T I O N ) EX I S T I N G G R A D E EX I S T I N G G R A D E PR O P O S E D G R A D E PR O P O S E D G R A D E PR O P O S E D G R A D E PR O P O S E D G R A D E WA T E R S U R F A C E P R O F I L E AT D E S I G N F L O W WA T E R S U R F A C E P R O F I L E AT D E S I G N F L O W WA T E R S U R F A C E P R O F I L E AT D E S I G N F L O W WA T E R S U R F A C E P R O F I L E AT D E S I G N F L O W T2 EX I S T I N G S T R E A M CH A N N E L B O T T O M T1 T1 T1 RI P - R A P B A S I N E N E R G Y D I S S I P A T O R BA S E D O N H E C - 1 4 NO T T O S C A L E IN V E R T A T E N D O F P I P E (P I P E I N C I S E D F O R A Q U A T I C PA S S A G E ) LE V E L hS ( P O O L D E P T H ) K:\22\22-0130\220132-Flatiron Forest\CAD\Exhibits\Impact Maps\Flatiron Forest Impact Maps.dwg- Wednesday, October 19, 2022 4:33:12 PM - CNURSEY our people • your success EST. 1983 WithersRavenel 115 MacKenan Drive | Cary, NC 27511 License #: F-1479 | t: 919.469.3340 | www.withersravenel.com In i t i a l P l a n D a t e : 0 9 / 2 2 / 2 2 Re v i s i o n s : WR J o b N o . 02 2 2 0 1 3 2 DA T E 09 / 2 2 / 2 2 638 HAMLETS CHAPEL ROAD | CHATHAM COUNTY, NC 27312 IMPACT MAPS FLATIRON FOREST DR N : T W D G N : T W C K D : C N RI P - R A P S T I L L I N G BA S I N D E T A I L S E