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Home My WebLink About20200819 Ver 1_More Info Received_20200812Strickland, Bev From: Thomas, Kevin <kthomas@cecinc.com> Sent: Wednesday, August 12, 2020 7:49 AM To: Annino, Amy M; Campbell, David; dean@bccgp.com; Johnson, Matt; Genero, George Cc: Walker, Fred Subject: [External] RE: DWR 20200819 Shining Rock Classical Academy - Additional Information Request Attachments: 302078-CV01-C400 SW Management Plan.pdf, 302078-CV01-Proposed Wetland Impact-A2.pdf, 302078-CV01-Proposed Wetland Impact Figures.pdf; Bypass Apron.pdf, Bypass Culvert.pdf, 302078-CV01-HYD2 Proposed Hydrology.pdf; 302078- CV01-HYD1 Existing Hydrology.pdf Follow Up Flag: Flag Status: Follow up Flagged External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to report.spam@nc.gov Ms. Annino, Please see attached updated figures that hopefully provide answers to your below questions. Please let me know if you have any further questions. Thank you, Kevin Thomas, PWS & LSS (NC, SC & FL) / Senior Project Manager Civil & Environmental Consultants, Inc. 3701 Arco Corporate Drive • Suite 400 • Charlotte, NC 28273 Toll -Free: 855-859-9932 • Direct: 980-260-2035 • Fax: 980-237-0372 Mobile: 410-259-4745 • http://www.cecinc.com Senior Leadership - Integrated Services - Personal Business Relationships This electronic communication and any attachments are intended solely for the use of the person or entity to which it is addressed, and may contain information that is confidential, privileged and exempt from disclosure under applicable law, including copyright law. If you are not the intended recipient of this message, you are prohibited from disclosing, reproducing, distributing, disseminating or otherwise using this transmission. Please promptly notes the sender by reply electronic communication and immediately delete this message from your system. From: Annino, Amy M <amy.annino@ncdenr.gov> Sent: Tuesday, August 11, 2020 11:58 AM To: Thomas, Kevin <kthomas@cecinc.com>; Campbell, David <dcampbell@cecinc.com>; dean@bccgp.com Cc: Walker, Fred <fred.walker@ncdenr.gov> Subject: DWR 20200819 Shining Rock Classical Academy - Additional Information Request On June 19, 2020, the Division of Water Resources (Division) received your application requesting a 401 Water Quality Certification from the Division for the subject project, with the appropriate fee received on June 24, 2020 and additional information received on July 23, 2020. The Division has determined that your application is incomplete and cannot be processed. The application is on hold until the following items are addressed: • The site plan does not clearly show the extent of the wetland impact or if the rip rap dissipater pad and head walls are included in the wetland impact. Please enumerate all wetland / stream impacts (including fill slopes, headwalls, dissipater pads, etc.) on the site plan and clearly label impacts (Wetland / Stream Impact 1, etc.). The Division recommends highlighting by hatching or shading all impacts areas for temporary impact areas and permanent impact areas. [15A NCAC 02H .0502(g)] • The plans submitted 7/27/2020 label the culvert differently on different plan sheets. Please clarify which label is correct. o The stormwater management plan on sheet C400 labels the culvert (at W1 Impact) as "Bypass pipe network to convey offsite runoff around proposed stormwater BMP". o Figure Al, Proposed wetland Impact Plan view labels the culvert as "Proposed stormwater bypass for upslope runoff". Are drop inlets proposed or will stormwater sheet flow downslope and enter the wetland and culvert? • The Division is concerned about wetland and stream channel stability below the culvert outfall. Please provide calculations showing that stormwater flow from the culvert and from surrounding fill slopes will not degrade wetlands and waters. [15A NCAC 02H .0506(b)(2) and (b)(3)] Pursuant to Title 15A NCAC 02H .0502(c), the applicant shall furnish all of the above requested information for the proper consideration of the application. If all of the requested information is not received by September 11, 2020, the Division will be unable to approve the application and it will be returned. Amy Annino Environmental Specialist —Asheville Regional Office Water Quality Regional Operations Section NCDEQ — Division of Water Resources 2090 U.S. Hwy. 70 Swannanoa, N.C. 28711 828 296 4656 office 984 232 1222 mobile amy.anninoa-ncdenr.gov D7;.,. E Q Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public during this challenging time. 6 4 2 R/M-2592.73J I I I l �� PROPOSED LIMIT OF DISTURBANCE \ \\ \ \ \\ \ \ \ \\ \ \\ \ \\ \ \\ \ \ \\ INV-2582.38 -� 1 �� (t12.0 ACRES) \ - SAN \ \ \o\ \ PROPOSED RETAINING I I �- I I �� \ O� \ \ \ \ \ \ o \ \ \ WALL (TYP.) EXISTING STREAM SA 1 \ \ \ \ \ \ \ \ \\ \ \ \\ \\ . I I I _ (NO PROPOSED IMPACTS NORTH I LEGEND �\ �� \� �\ \� ��\ EXISTING INDEX CONTOUR \ Z p I 1`L \ �� _ - \ \ _ \ \\ \ \\ \ 0 e \ \ _ -- �`� POINT OF INTEREST #1 \ / \ \ \\ V z ----------------- EXISTING INTERNED/ATE CONTOUR \ �n \ \ \ o / \ �� O\� �\ \\\�\\` � (STREAM SA 1) / �� \ \ \\ \ a EXISTING PROPERTY LINE \ \ \ I 6'� r �o - \ \ \ \ _ _ - - - \ / \ _ Z EXISTING RIGHT OF WAY LINE I \ \ \ \ \ _ - _ _ - - - - \ \ �\ 0 W \ \ OUTLET PROTECTION 1 \ \ \ w EXISTING UTILITY EASEMENT \ WET POND B I A \ ?6s $ \ - - I \ \ / \ \ OH-E- EXISTING OVERHEAD L/NE (SEE SHEET C402) tea, ��\ ` �� _��\ -- IE: 2623.4 / \ \\ \\ \\>\ Ij R/M-2586.95 I I \ _ - - \ cc SAN EXISTING SANITARY SEWER INV-2584.12 I -� - BYPASS PIPE NETWORK TO / sT EXISTING STORMWATER SEWER Z tN7� N I / r - \\`� CONVEY OFFSITE RUNOFF J Q m I I\ PARCEL LINE \ a (TYP.) _-- STRUCTURE HW1 W EXISTING WATER LINE CONCRETE ENDWALLCn EXISTING TREEL/NE SWALE 2 303 / �_ \ \�\` _-- - �� `,o n / x x x EXISTING FENCE L/NE I N I I C802 / / / / % \ ,- ----- RIM 2626.15 / O U N �� INV. SW - 2623.40 L RIM-2585.76 � � I co � \ \ \ / PROPOSED LIMIT OF DISTURBANCE I� I N -; / INV-2582.61 EXISTING ITEM TO BE REMOVED N YI5 I / ;'� \ \j _ - _ - / PLAYFIELD \ �•OOy N AREA � o EXISTING WOODED AREA TO BE CLEARED 2 I x I � M ``� \ \ \ ` ,q\, \ � � - \� / \ \ /-� �\ STRUCTURE YI6 Ottff hI I OS-B N coo _ \ \ j \ �� `�� = YARD INLET z EXISTING CONCRETE TO BE REMOVED I I N \ ��\ \\� ^ / \ F � / RIM = 2634.42 0 \ \ X\ \ X \ \ \ �'1�' / CI4 INV.(NE)= 2625.35 RIM-2585.04I III I,\ I \ \\\ ,qN �N-EX/STING WETLAND (IMPACTS) "INV-2581.22 EXISTING WETLAND A N F- i PROPOSED IMPACTS P E LI T F DISTURBANCE ' z 03 I I ( / - 1 \ \ \ \ > / _ (PROPOSED LIMIT OF PROPOSED RETAINING WALL 15 I I ' ' Zg3 I _ -- \ (� y 0j Z -!s M H 2 I I I I � \ \ \,� � � � / DISTURBANCE) - Z PROPOSED PAVEMENT I I I I I 303 \ p ~ �� I \EXISTING WETLAND A _ -1 ti II II I III / I SWALE 3 \ \ �S / D��r (NO IMPACT OUTS/DE _ -D O M PROPOSED TREELINE RIM-2585.08 IIII I 1 C802 \ \ �= / _ \ 3 - OF PROJECT PARCEL) _ INV-2581.86 4_� i 1 i I I I , I - \ \ - � --1 TA �O cPROPOSED INDEX CONTOUR ' PROPOSED BUILDING SWALE - PROPOSED INTERMEDIATE CONTOUR TIE PIPE OUTFALL T.00 C802 � EXISTING DRAINAGE 000 oof - O a)PROPOSED WATER SERVICE I I IM 0 Q STRUCTURE TO REMAIN I o / 1 .. o �n I IE:2581.95 II - \ \ _ \ 0 �--� K y SAN PROPOSED SEWER SERVICE I I I I I \ ~ I /� \ ' �� 1 C) C� *' c Z 640 1 +� PROPOSED STORM SEWER I I I IIII I/ I \ �� 1, N �„� RIM-2585.84 III l I 1 O\ I ST CB 1 m POINT OF INTEREST #2 I I l I / \ Gi 1 / I - U 0) M G PROPOSED NATURAL GAS LINE �(JULE NOLAND DR) i I lNV-2583.28 I I I I I/ // I I \ - .> O 3 Structure Table Structure Name RIM E. INVERT IN INVERT OUT REMARKS CB1 2638.85 P2 = 2633.63 P3 = 2633.53 GRATE INLET C132 2633.84 P3 = 2628.14 P4 = 2628.05 GRATE INLET CB3 2629.67 P4 = 2623.52 P9 = 2617.26 P5 = 2617.16 GRATE INLET C11 2639.35 P11 = 2629.18 P7 = 2629.18 COMBINATION INLET C12 2625.04 P5 = 2615.99 P7 = 2617.99 P6 = 2614.00 COMBINATION INLET C13 2613.02 P8 = 2609.39 COMBINATION INLET CI4 2642.05 P1 = 2637.44 COMBINATION INLET C16 2640.42 P11 = 2634.87 COMBINATION INLET J81 2606.89 01 = 2603.59 MANHOLE OS -A 2609.28 01 = 2604.00 OUTLET STRUCTURE YI2 2643.47 P1 = 2635.99 P2 = 2635.85 YARD INLET YI3 2623.46 P10 = 2618.13 YARD INLET YI4 2621.64 P10 = 2617.65 P9 = 2617.55 YARD INLET Pipe Table Pipe Name Size (in) Length (ft) Slope MATERIAL 01 18 41.4 1.00% RCP P1 15 72.6 2.00% HDPE P2 15 111.1 2.00% HDPE P3 18 107.9 5.00% HDPE P4 18 90.5 5.00% HDPE P5 24 58.3 2.00% HDPE P6 24 45.2 8.84% HDPE P7 15 112.0 10.00% HDPE P8 15 55.5 4.30% HDPE P9 18 59.3 0.50% HDPE P10 15 48.0 1.00% HDPE P11 15 113.9 5.00% HDPE Structure Table Structure Name RIM E. INVERT IN INVERT OUT REMARKS C64 2649.55 P14 = 2647.15 GRATE INLET C18 2635.94 P12 = 2629.63 COMBINATION INLET CI10 2625.42 P12 = 2619*11 P16 = 2615.92 COMBINATION INLET JB3 2649.19 P14 = 2646.74 P15 = 2646.74 MANHOLE JB4 2600.77 P16 = 2597.07 P17 = 2589.20 MANHOLE MH2 2588.12 02 = 2582.15 03 = 2582.05 JUNCTION BOX OS-B 2588.38 02 = 2582.50 OUTLET STRUCTURE YI5 2624.27 P11 = 2620.00 YARD INLET Pipe Table Pipe Name Size (in) Length (ft) Slope MATERIAL 02 18 69.2 0.50% RCP 03 18 18.6 0.50% RCP P11 24 44.3 2.00% HDPE P12 15 158.0 6.00% HDPE P14 10 82.7 0.50% HDPE P15 15 68.1 1.09% RCP P16 24 74.1 25.45% HDPE P17 24 20.3 1.00% HDPE REFERENCE 1. EXISTING CONDITIONS BASE PROVIDED BY CIVIL & ENVIRONMENTAL CONSULTANTS, INC. - "302078XR-CV01-Survey.dwg"; RECEIVED ON 07/25/2020. III � I �; I I; ►�;;; ;; ///;, / , l \ II , II 1 � , - � III I I IIM CB4 I // V6I / TRIBUTARY TO POND B (POST -DEVELOPED SUBBASIN 2B) \\\\\\\\\\ TOTAL AREA= 3.9 ACRES \\ \ � / � � / CB2 2573.941eut .l a ZZ \ \\ \ \ CB3 F \\\ \ RIM-2588. 13 \ \ \ \ \ \ \ \ \ \ \\ INV-2583.64 \ \ \ \\ \ \ \ \\\ \\ \ \ \ RIM-2587.28 \� \ \\\\\ \ \\ \ \ \ \ \ P 1 CI6 N� \ �\\\ INV-2582.32 Cl2 Z \ \ \ \\ \ \\\ \ TRIBUTARY TO POND A (POST -DEVELOPED SUBBASIN 3B) �� \\ -262 0_ RIM-2587.50 \ \ \ \, TOTAL AREA= 4.2 ACRES \ \\ INV-2579.85 \ \ \ \ \ \ \ 2610 \ \\ \\ \ \\\ \\\\ \ WET POND A RIM-2588.01 \\ \\� \ \� \\\ \\ \, (SEE SHEET C401) \ INV-2583.08 \ \\ \\\ \ \\ \ \\\ 261 RIM-2584.88 \\ \ \ \ \ \ / RIM-2591.66 13 \ \ c INV-2579.90 \ \ x 0 -� C dO1S lNV-2578.88 Y /NV 1N-2588.36 x OS -A - INV OUT-2586.55 TIE PIPE OUTFALL TO J B 1 ► - EXISTING PIPE TO REMAIN �79 24 _ WITH NEW JUNCTION BOX 0 15 "CUP 74.46 T INV--2607. 18 - 1S 1S 1S 1S EXISTING 15" PIPE TO t1w-2602. 1J LOT AREA AND COVERAGE N �l EX/STING NCDOT_jREMAIN (20 LF ® .379) NV-2597.96 LOT AREA: 13.79 ACRES - - _ _ _ _ _ _STORM SEWER (TYP.) _ T EXISTING \ POINT OF INTEREST #3 \ TREE AREA: 2.44 ACRES (RUSS AVE) OPEN SPACE AREA: 11.25 ACRES M � M M IMPERVIOUS AREA (JULE NOLAND) 0.10 ACRES \ RIM-2583.23 \ \ PROPOSED IMPERVIOUS AREA: 4.41 ACRES TREE AREA TO REMAIN: 2.32 ACRES OPEN SPACE AREA (INCL. BMP'S): 7.06 ACRES TREE AREA TO BE CLEARED: 0.08 ACRES IMPERVIOUS COVERAGE RATIO: 32% (HIGH DENSITY PROJECT) NOTE: ZONE X (NOT WITHIN 100-YEAR FLOODPLAIN) PER FEMA MAP, TOWN OF WAYNESVILLE MAP ID 3700861600J, EFFECTIVE 4/3/2012 RUSS AVE. (US-276) SCALE IN FEET 0 40 80 Y13 --/, oM Cc 0000 a O r I I C ti M Uj G > U � iL- �W-Z YI4 I � � - 0 () a J / \ 0 J Q > -�Q♦o \ V cn C802 303 SWALE 1 � � �'--Z - Z Z _ Q \ \ \ ♦3: W 303 SWALE 4 \\�� \\ �� \\ v♦ Q J X X�X - x-I x x FINAL DRIVEWAY DESIGN SUBJECT -TO NCDOT TRAFFIC STUDY °0 o - �- w r I R/M-2620. 01 O - 1 M lNV-2616.61 - Z LU NORTH CAROLINA BOARD OF EXAMINERS N%;000'T FOR ENGINEERS AND BEFORE YOU DIQ! SURVEYORS LICENSE CALL 1-800-632-4949 N.C. ONE -CALL CENTER NO. C-3035 ITS THE LAW! LU } m QCO Z Z Y Z Q � U J o Z cli LU a O O CM Q Cl) fn 0 0 � Q fiC ` cn w O c7 � oc ' SEAL ¢ Cca G o o a a i 0 - DRAWING NO.: C400 '" 115-11-2020 N 4 SUBMITTAL & REVISION RECORD NO DATE DESCRIPTION 8/11/20 PCN RESUBMITTAL PROPOSED FILL 19 FEET PROPOSED GRADE 2650 2650 0 2645 i PROPOSED FILL 2645 23 FEET i .-. 2640 I , 2640 2635 Jy i EXISTING GRADE i 2 35 z 2630 _�_:� ; 2630 z O 2625 2625 LLJ 195 LF 30"TEXI@STIING 00%2620J2620STRUCTURE Y16 WETLAND YARD INLET 2615 RIM - 2634.92 TO BE IMPACTED 2615 IW.(NE)— 2625.35 PROPOSED HEADWALL 2610 ELEV. 2623.4 2610 0 0 LO LO 0+00 1 +00 2+00 2+29 SECTION A -A THROUGH WETLAND PROFILE SCALE H:1 "=40'; V:1 "=10' i i i SHINING ROCK f1 Aw CLASSICAL ACADEMY JULE NOLAND DRIVE Civil & Environmental Consultants, Inc. WAYNESVILLE, NC 3701 Arco Corporate Drive - Suite 400 - Charlotte, NC 28273 SECTION A -A THROUGH WETLAND Ph: 980.237.0373 - Fax: 980.237.0372 www.cecinc.com DRAWN BY: MRS CHECKED BY: MSJ APPROVED BY: GAG I FIGURE NO.: A2 DATE: JULY 20201 DWG SCALE: AS SHOWN PROJECT NO: 302-078 F a 0 3 SUBMITTAL & REVISION RECORD NO DATE DESCRIPTION 8/11/20 PCN RESUBMITTAL \ \ \ 1 I EX/STING WETLAND A: \ \ \ I 3583 SOFT. (0.082 ACRES) NORTH \ \ \ \ \ PROPOSED IMPACT - EXISTING STREAM SA 1 (INT.) 2494 SOFT. (0.057 ACRES) (NO PROPOSED IMPACTS)40 RIPRAP OUTLET PROJECTION PROPOSED STORM HW1 // WATER BYPASS FOR / PROPOSED SCHOOL UPSLOPE RUNOFF 0 AMENITY AREA ® EXISTING WETLAND 0 / PROPOSED IMPACTS Oy 2494 SF (0.057 ACRES Y16 'q I O► \ i _ \ EXISTING WETLAND A: ' el 3583 SOFT. (0.082 ACRES) —TOTAL PROPOSED LIMIT OF DISTURBANCE PROPOSED ACCESS DRIVE Q SCALE IN FEET Q NEW -EXISTING WETLAND 0 60 120 REFERENCE _ _ EXISTING WETLAND (IMPACTS) 1. EXISTING CONDITIONS BASE PROVIDED BY CIVIL & ENVIRONMENTAL CONSULTANTS, NC. — "302-078 SV01 TOPO.dwg"; RECEIVED ON 05/8/2020. IAMSHINING�,=,� ROCK CLASSICAL ACADEMY Civil & Environmental Consultants, Inc. JULE N DRIVE 3701 Arco Corporate Drive • Suite 400 • Charlotte, NC 28273 WAYNESAND VILLE, NC Ph: 980.237.0373 • Fax: 980.237.0372 PROPOSED WETLAND IMPACT www.cecinc.com PLAN VIEW DRAWN BY: 7 CHECKED BY: MSJ APPROVED BY: GAG I FIGURE NO.: DATE: JULY 20201 DWG SCALE: 1 "=60 PROJECT NO: 302-0781 Al N 4 SUBMITTAL & REVISION RECORD NO DATE DESCRIPTION 8/11/20 PCN RESUBMITTAL PROPOSED FILL 19 FEET PROPOSED GRADE 2650 2650 0 2645 i PROPOSED FILL 2645 23 FEET i .-. 2640 I , 2640 L 2635 i EXISTING GRADE i 2 35 .� z 2630—� ; 2630 z O 2625 2625 LLJ w 2620 195 LF 30" RCP ® 1.00% 2620 J STRUCTURE YI6 EXISTING WETLAND YARD INLET 2615 RIM - 2634.92 TO BE IMPACTED 2615 IW.(NE)— 2625.35 PROPOSED HEADWALL 2610 ELEV. 2623.4 2610 0 0 LO LO 0+00 1 +00 2+00 2+29 SECTION A -A THROUGH WETLAND PROFILE SCALE H:1 "=40'; V:1 "=10' i i i SHINING ROCK f1 Aw CLASSICAL ACADEMY JULE NOLAND DRIVE Civil & Environmental Consultants, Inc. WAYNESVILLE, NC 3701 Arco Corporate Drive - Suite 400 - Charlotte, NC 28273 SECTION A -A THROUGH WETLAND Ph: 980.237.0373 - Fax: 980.237.0372 www.cecinc.com DRAWN BY: MRS CHECKED BY: MSJ APPROVED BY: GAG I FIGURE NO.: A2 DATE: JULY 20201 DWG SCALE: AS SHOWN PROJECT NO: 302-078 r776Me 9F.6n 2655 PROPOSED GRADE 2655 2650 — � EXISTING GRADE 2650 2645 ; 2645 ' / 2640 2640 2635 —PROPOSED FILL i 2635 21 FEET 2630 EXISTING EXISTING GRADE 2630 2625 WETLAND 2625 2620 TO BE IMPACTED ELEV: 2629.0 2620 2615 2615 0 LO 0 LO 0+00 1 +00 2+00 2+83 SECTION 13-6 TRHOUGH WETLAND PROFILE SCALE H:1 "=40'; V:1 "=10' f1 A i i i SHINING ROCK r CLASSICAL ACADEMY Civil & Environmental Consultants, Inc. JULE N DRIVE 3701 Arco Corporate Drive • Suite 400 • Charlotte, NC 28273 WAYNESAND VILLE, NC Ph: 980.237.0373 • Fax: 980.237.0372 SECTION B-B THROUGH WETLAND www.cecinc.com DRAWN BY: MRS CHECKED BY: MSJ APPROVED BY: GAG I FIGURE NO.: DATE: JULY 20201 DWG SCALE: AS SHOWN PROJECT NO: 302-0781 A Do = 2.5 ft 3 0 3Do=7.5ft Outlet w , Oo + La La = 16 ft pipe W = 2.5+16 = 18.5 ft diameter (Do) d50 = 6 in La —� ►rater 0.500 v 11 20. 10 a 3 5 10 20 50 100 200 500 1000 Discharge (ft3/sec) Qla = 23.9 cfs Curves may not be extrapolated. Figure 8.06a Design of outlet protection protection from a round pipe flowing full, minimum tailwaier condition (T. c 0.5 diameter) Bypass Pipe Outlet Protection (30" DIA.) &063 Channel Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc. Offsite Bypass Culvert Circular Diameter (ft) = 2.50 Invert Elev (ft) = 2640.00 Slope (%) = 1.00 N-Value = 0.015 Calculations Compute by: Known Q Known Q (cfs) = 23.90 Elev (ft) 2643.00 2642.50 2642.00 2641.50 2641.00 2640.50 2640.00 2639.50 Highlighted Depth (ft) Q (cfs) Area (sqft) Velocity (ft/s) Wetted Perim (ft) Crit Depth, Yc (ft) Top Width (ft) EGL (ft) Section Tuesday, Aug 11 2020 = 1.50 = 23.90 = 3.08 = 7.75 = 4.44 = 1.67 = 2.45 = 2.43 0 1 2 3 4 Reach (ft) 7\\ \\ \ \ �\ \\ \ \ \\ \ \ \ \ \\ I I \ \\\ \\\\ \\\\ \\\ \ \ \ \ l /� \ \ \\ \ \\ //\\�\\��\\�\\ \ \\\\\\\\\\� \\ \\\ \ ) \\\ \\ \ \\\ l\I \� 1 \ \ 11 1 \) ) / J/ \\ I /I1 �IJII I/)l l / AV� \\ / // \\\ \� / / / ///II IIII \\\_— �\\� �\\\IIII 1 / // // \\\\� J/ //// ////// NORTHI \\ \-- \\\\ II l 1% /� / / —\\\ \ \ N11111f 1 f M —/ I \\\\ \ \ \ \\ \ \ \ \ \ 1 \ I I IIIIIII ( ( \ \\ \ \ \\ \ \ \ \ 1 1 I 1 I I III 1 \ \ — \ \ , \\��\\\\\\\\� \\ \\�� IIII I \\\ / 1 \ / \ \ f I r��\\ II \�\\\\ POST -DEVELOPMENT DRAINAGE AREA 1\\\ �\\\\i� j WOODS. GOOD (B) = 0.36 AC ((( \ \ \\ \\\\ \\ \ \\\ \ \ \ \ \ �\ \ \ CN 58 OPEN SPACE, GOOD B 0.52 AC \ \\\\\\ \\\\ \\\ \ \\ \\ I I l l l ®®I I CN = 61 (> _ ) \� �\ \\\� \�\�.\ / I / CNEN SPACE, GOOD (C) = 1.04 AC \� I \ \ \ \ // \\ \ \ POINT OF INTEREST POST -DEVELOPMENT DRAINAGE AREA 2.B TOTAL AREA = 1.92 AC \ \ \ I \ (STREAM SA 1) OPEN SPACE, GOOD (B) = 0.33 AC CN 67 TC = 6 MIN r \ \ I \ \ \\\ \\\�� " \` CN = 61 \\EausA 1: \\\\\ OPEN SPACE, GOOD (C) = 1.26 AC \ IMPERVIOUS AREA C = 2.30 AC jr- TOTAL AREA = 3.89 AC TC = 180 MIN _ \\ � �� EXIST/NG OFFS/TE \\\ \ \ RUNOFF THROUGH SITE 11.4 ACRES \�\ I I I l / \\\ ---- 11 \ PROPOSED WET PONND POINT OF INTEREST (JULE NOLAND POST -DEVELOPMENT DRAINAGE AREA 2.Az WOODS, GOOD (C) = 1.37 AC OPEN SPACE, GOOD (C) = 1.12 AC _�� _--___— CN = 74 EXISTING IMPERVIOUS AREA = 0.10 AC TOTAL AREA = 2.59 ACCN _\ TC = 60MIN ° \ \ POST -DEVELOPMENT DRAINAGE AREA 3.B --- _—_- 1 \\ \ OPEN SPACE, GOOD (B) = 0.62 AC \ 1 \� \ CNEN SPACE, GOOD (C) = 1.73 AC �� 1 i I / /� / / / I \ \\ I I \ 1 IMPERVIOUS AREA = 1.88 AC i \ CN = 98 LEGEND �� —\ IIII (III (I l \ J l/ 16=SUBBASIN AREA \ \ \ TOTAL AREA = 4.23 AC IMPERVIOUS AREA \ \ tt \� /\ CN = 83 TC = 6 MIN FUTURE IMPERVIOUS AREA POST -DEVELOPMENT DRAINAGE AREA 3.A > \ \ WOODS, GOOD (C) = 0.28 AC CN 65 WOODED AREA "B" TYPE SOIL _� \ OPEN S6PACE, GOOD (8) = 0.10 AC �_------ —\ I WOODED AREA "C" TYPE SOIL - \ OPEN 7�ACE, GOOD (C) = 0.64 AC Tw PROPOSED A- — — IMPERVIOUS AREA = 0.10 AC OPEN SPACE "B" TYPE SOIL POINT OF INTEREST #3 OPEN SPACE "C" TYPE SOIL �\ \ _ ( ) TOTAL AREA = 1.12 AC \`= �\ RUSS AVE CN = 73 \\—_� ��\)i�— CONCENTRATION TIME REFERENCE 1-1 \\ � __�= TC = 6 MIN �i nweeTuu_ EXISTING TOPOGRAPHY WAS PROVIDED AT 2—FT CONTOUR INTERVALS BY CIVIL & ENVIRONMENTAL CONSULTANTS. SURVEY WAS PERFORMED APRIL 2020. i SHINING ROCK SCALE IN FEET fIA71W ffCLASSICAL ACADEMY 0 150 300 Civil & Environmental Consultants, Inc. JULE N ESAND DRIVE 3701 Arco Corporate Drive - Suite 400 - Charlotte, NC 28273 WAYNESVILLE, NC Ph: 980.237.0373 - Fax: 980.237.0372 DRAINAGE AREA www.cecinc.com POST -DEVELOPMENT DRAWN BY: MSJ CHECKED BY: DPC APPROVED BY: GAG FIGURE NO.: DATE: JULY 20201 DWG SCALE: 1 "=150' PROJECT NO: 302-078 HYD- /A\ \ \ate\\\\c CONCENTRATION TIME (6 MIN.) (n=0.15)SHEET FLOW— 100' ® 10.27 POINT OF INTEREST #1 SHALLOW CONCNORTH FLOW— 384' ® 17.7% �I . — (STREAM SA 1) _ \—_--- \ PRE —DEVELOPMENT DRAINAGE AREA 1 STREAM SA 1 \��\\\\ \ 1 1 I I I I I I �1 I / / I ( i I WOODS, GOOD (B) = 0.51 AC ?� OPEN SPACE, GOOD B 1.02 AC op O _ 61 \— OPEN SPACE, GOOD (C) — 1.55 AC CN = 74 CONCENTRATION TIME (6 MIN.) TOTAL AREA EA 3.08 AC SHEET FLOW— 100' ® 7.8% (n=0.15) TYPE B C)vCN 67 TIC 6 MINSHALLOW CONC. FLOW— 234' ® 25.3% I I II I III I I I I I \ ( ) Dsc TYPE B I 1 I I IIII III l / / 2660 / POINT OF INTEREST #2 JULE NOLAND DR PRE —DEVELOPMENT DRAINAGE AREA 2 WOODS, GOOD (C) = 1.87 AC CN = 65 1 \ \ HaC2(TYPE B) \ \ i \� I I I / i' _ -_ -2660� OPEN SPACE, GOOD B = 0.41 AC I I ?s \ ^\ --- / () \ \ �\ sow / IIII \ I l l — 70_— CN = s1 ` ` �� I I .KI / l �\ \ \ I I I I I I I I / (/ �\ � � _— OPEN SPACE, GOOD (C) = 2.33 AC CN = 74 EXISTING IMPERVIOUS AREA = 0.10 AC I o \ \ \\ ?s CN=8 o�\\ / \ \\ 6'\�� /,//%/I/ /. 3 TOTAL AREA = 4.71 AC CN = 70 TC = 6 MIN \ \�s20` PRE —DEVELOPMENT DRAINAGE AREA 3 6,10 \ �� WOODS, GOOD (C) = 0.57 AC LE END 2spp\ \\ \ �EvD(TYPE B/C) \ i I I I I i I I I �� /\ CN = 65 — Ci OPEN SPACE, GOOD (B) 1.78 AC CN = 61 SUBBASIN AREA \ \ �z�/ I i \� �� \\�\�� — j� �� OMEN 74ACE, GOOD (C) = 3.61 AC WOODED AREA "B" TYPE SOIL�— > / \ TOTAL AREA = 5.96 AC WOODED AREA "C" TYPE SOIL / CN = 69 v TIC = 7 MIN -- OPEN SPACE "B" TYPE SOIL OPEN SPACE "C" TYPE SOIL ��L CONCENTRATION TIME FLOWPATH CONCENTRATION TIME (7 MIN.) l \ \� \ N I I SHEET FLOW— 100' ® 15.3% (n=0.15) s _ POINT OF INTEREST #3 SHALLOW CONC. FLOW— 681' ® 8.4% - (RUSS AVE) SCALE IN FEET 0 120 240 PREFERENCE 1. EXISTING TOPOGRAPHY WAS PROVIDED AT 2—FT CONTOUR INTERVALS BY CIVIL & ENVIRONMENTAL CONSULTANTS. SURVEY WAS PERFORMED APRIL 2020.