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HomeMy WebLinkAbout1-22-25 TRC Agenda Packet1 TECHNICAL REVIEW COMMITTEE AGENDA January 22nd, 2025 New Hanover County’s Technical Review Committee (TRC) will meet Wednesday, January 22, 2025 at 2:00 p.m. to discuss the below items. PLEASE NOTE: This meeting will be conducted remotely via teleconference. Interested parties can contact the Planning and Land Use Department at 910-798-7165 for more information. Item 1: 1830 Flightline Drive – New Hangar at ILM International Airport- SITECN-24-000057 Request by Travis Pence, AIA with the Wilson Group for a new 18,068 sq ft hangar at the ILM International Airport. The site is located at 1830 Flightline Drive, and is 1.93 acres, zoned Airport Commerce (AC). The engineer is Christopher Birkmeyer with WK Dickson. The case planner is Ryan Beil, (rbeil@nhcgov.com, 910-798-7444). Item 2: Sketch Plan Review – 6134 Carolina Beach Road- Store Expansion Sketch plan review of this site- the proposal is to remove the gas station, fuel stations, canopy and tanks, and to expand the existing shopping center building to the south. New Hangar at ILM International Airport– 1830 Flightline Dr – TRC Review Page | 1 To: Travis Pence, AIA, The Wilson Group From: Ryan Beil, Development Review Planner Date: 1/22/2025 PID#: R04200-001-025-000 Egov# SITECN-24-000057 Subject: 1830 Flightline Dr, Wilmington NC, 28405– New Hangar at ILM International Airport - TRC Review The following comments have been received for the January 22, 2025, TRC meeting. Additional comments may be made upon further review of subsequent revisions. Please note: following the TRC meeting, a revised site plan addressing each of the below items must be resubmitted prior to receiving site plan approval. Planning, Ryan Beil 910-798-7444 1. General Comments a. Zoning is AC b. Use is airport hangar/storage, uses permitted by right c. Per the elevations it appears there is some office use in this building, please confirm if this is the case and how much of the building will be used for office space 2. UDO Section 5.1, Parking and Loading a. There is no parking minimum b. Please be aware that parking provided will need to be landscaped 3. UDO Section 5.2, Traffic, Access and Connectivity a. Please note that no building permit for any structure shall be issued which requires NCDOT approval for a Driveway Permit until NCDOT has issued the permit approval. Evidence of approval shall accompany the application for building permit. 4. UDO Section 5.3, Tree Retention a. Please confirm there are no trees being removed on site New Hangar at ILM International Airport– 1830 Flightline Dr – TRC Review Page | 2 5. UDO Section 5.4, Landscaping and Buffering a. Parking lot landscaping i. UDO section 5.4.5 requires parking lot landscaping equal to 8% of the parking. ii. While the County has not historically required trees in projects in the ILM airport due to height restrictions, we have allowed shrubs in landscape islands to count towards the parking lot landscaping requirements. iii. Please confirm the total square footage of parking lot area so the required landscaping square footage can be calculated b. Street yard plantings i. Street yard for airport commerce district requires 25sq ft per linear foot of street frontage, calculations show street frontage for this project is 205’ * 25=5125 sq ft of street yard. Similarly to parking lot landscaping, we do not require trees in the airport, however we do require shrubs. ii. UDO section 5.4.6 states that every 600 sq ft of street yard, 6 shrubs are required in the street yard area. 5125 sq ft/600= 8.54 II 8.54*6=51 shrubs in the street yard area c. Foundation plantings i. Sq footage is based on 12% of the building frontage facing any parking lots or internal drive aisles up to 12’. Site plan shows building face is 120’. 120*12=1440 sq ft of foundation plantings required. 6. UDO Section 5.5, Lighting a. Please note that a lighting plan is not required for TRC approval, but will be required prior to issuance of construction plan approvals. b. Is any lighting proposed for the site? 7. UDO Section 5.6, Signs a. For any signs on the site, please submit for a sign permit, referencing Section 5.6 of the UDO for standards. 8. UDO Section 5.7, Conservation Resources a. Per the New Hanover County Conservation Resource Map, there are no Conservation Resources on this site. NHC Fire Services, Ray Griswold 910-798-7448 1. Fire Finals required 2. Sprinkler and Fire Alarm plans required permitting and review New Hangar at ILM International Airport– 1830 Flightline Dr – TRC Review Page | 3 3. A Section 501 Survey required - Emergency Responder Radio Coverage 4. A fire hydrant is required within 100 feet of the FDC 5. Please follow Chapter 33 - Safety During Construction & Demolition NHC Soil & Water Conservation, Bryan Dadson 910-798-7138 1. Comments forthcoming. NHC Engineering, Galen Jamison 910-798-7072 1. If funding for this project comes from the Airport, an erosion control permit issued by NC DEQ will be required. Should the funding be private, then erosion control permitting will be issued by New Hanover County (NHC) Engineering. If NHC issues the land disturbing permit, please digitally submit the permit application documentation with requisite review fees for County issued permit directly to gjamison@nhcgov.com. Application and forms can be found at https://www.nhcgov.com/249/Sediment-Erosion-Control 2. Please contact the State for the stormwater permit modification requirements. 3. Is the entire drainage area covered in the State stormwater? If so, then pre-post storm attenuation requirements of NHC will not be required. 4. All stormwater conveyance (inlets, pipes, culverts, ditches, etc) measures are subject to the NHC stormwater ordinance. Please submit to NHC Engineering for a stormwater permit for storm conveyance measures as the design is completed. Please digitally submit the permit applications documentation with requisite review fees to the COAST online permit portal (https://newhanovercountync-energovpub.tylerhost.net/apps/selfservice#/home). Applicable forms can be found at https://www.nhcgov.com/251/Stormwater however the application form is not required as the information will be gathered by the COAST portal. NHC Environmental Health, Dustin Fenske 910-798-6732 1. Site plan shows potential connection to existing public water and sewer. NHC Addressing, McCabe Watson 910-798-7068 1. Please contact me for address assignments following TRC approval. Cape Fear Public Utility Authority, Bernice Johnson 910-332-6620 1. CFPUA TRC Comments provided are preliminary comments only. 2. Utility Plan review required by CFPUA. 3. CFPUA is moving toward becoming paperless. When ready to submit plan review package, upload all documents to https://www.cfpua.org/FormCenter/Engineering-3/Engineering-Plan- Review-103. New Hangar at ILM International Airport– 1830 Flightline Dr – TRC Review Page | 4 4. CFPUA water and available; if existing services are not used, they will need to properly be abandoned per CFPUA policies. 5. Meter Sizing Form will be required. NCDOT, Nick Drees 910-343-3915 1. Please see attached WMPO, Greer Templer 910-341-0107 1. No comments Army Corps of Engineers, Brad Shaver 910-251-4611 1. The Corps has no comments. Comments not received at this time from: Emergency Services & E911, Steve Still NCDEQ, Chad Coburn NCDEMLR, Dan Sams DCM, Tanya Pietila STATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION JOSH STEIN J.R. “JOEY” HOPKINS GOVERNOR SECRETARY Mailing Address: NC DEPARTMENT OF TRANSPORTATION DISTRICT 3 ENGINEER’S OFFICE 5911 OLEANDER DRIVE, SUITE 101 WILMINGTON, NC 28403 04-11-03 COURIER Telephone: 910-398-9100 Customer Service: 1-877-368-4968 Website: ncdot.gov Location: 5911 OLEANDER DRIVE, SUITE 101 WILMINGTON, NC 28403 Memorandum To: New Hanover County Technical Review Committee Date: January 10, 2025 Subject: Hanger – 1830 Flightline Drive (Off Trask Drive) ________________________________________________________________________ These are preliminary comments and are based on the plans as submitted for the proposed site. They are subject to further review upon receipt of any additional information. Subsequently, additional comments and/or requirements may be necessary for this site. General Comments: NCDOT Driveway Permits, and Encroachments are submitted through the NCDOT Online Portal.https://connect.ncdot.gov/municipalities/Utilities/Pages/help.aspx NCDOT Driveway Permit: An NCDOT Driveway Permit is not required as the proposed driveway does not connect to a state-maintained road. NCDOT Encroachment Agreement: An NCDOT Encroachment Agreement is required for any utility connections or installations within the NCDOT right-of-way (form 16.6). An NCDOT Encroachment Agreement is required for any sidewalk or multi-use paths installed within the NCDOT right-of-way (form 16.6). Site Plan Comments: Drainage/Stormwater Conveyance: x If the drainage does not naturally flow to the NCDOT right of way the historic drainage pattern should be maintained. Include/update the NCDOT Standard Drawings (2024) that are applicable to the development. You can coordinate with the district office with any questions 910-398-9100. X X X X X TOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFA TSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSA TSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSA D XXXXXXXXXXXXXXXXXXXXX 29.0 28.0 29.0 30 . 0 31.0 30.0 29.0 29.5 29.0 28.5 28.0 29.0 28.0 29.0 29.0 30.0 28.0 29.0 31.0 30.0 29.0 28.030 . 0 29.0 28. 0 28.0 29.0 30.0 29.0 30.5 PROTECT EXISTING UNDERGROUNDUTILITIES (TYP.) (SEE NOTES) PHASE 2ACONTRACTOR TO REMOVE 200 LFOF CHAIN LINK SECURITY FENCE EXISTING UTILITYSTRUCTURES TO BEPROTECTED DURINGCONSTRUCTION (TYP.) END FENCE REMOVAL EXISTING UTILITY STRUCTURES TOBE PROTECTED DURINGCONSTRUCTION (TYP.) VERIFY DRAINAGESTRUCTURE HAS BEENREMOVED REMOVE AND RELOCATEEXISTING MAILBOX PROTECT EXISTINGFIRE HYDRANT START FENCE REMOVAL CONTRACTOR TOPROTECT EXISTING TREE PROTECT IRRIGATIONCONTROL VALVE CONTRACTOR TO REMOVE AND REPLACESECTIONS OF CHAIN LINK FENCE ASREQUIRED FOR PROPOSED GRADING SHOWNON SHEET 5 PROTECT EXISTING UNDERGROUND UTILITIESOUTSIDE OF THE HANGAR BUILDING FOOTPRINT.COORDINATE WITH CFPUA VERIFY WATERLINE HAS BEENABANDONED IN PLACEAND REMOVE SAWCUT AND REMOVEAND REPLACE 12 SY OFEXISTING ASPHALT TOCONSTRUCT PROPOSEDDRIVEWAYS LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LO D LO D LOD LO D LOD LOD LO D LOD LO D LOD LO D LOD LOD LOD LOD LOD LO D LO D LOD LO D LODLODLODLODLODLOD LO D LODLODLODLODLODLODLODLODLODLODLO D LO D LODLODLODLODLODLODLOD LO D LO D LO D LO D LOD LO D LOD LOD LOD LO D LOD LOD LOD LOD COORDINATE W/AT&T TO RELOCATEEXISTING FIBER LINE Know what's R DEMOLITION NOTES: 1. ALL CONSTRUCTION SHALL BE IN STRICT ACCORDANCE WITH LOCAL STANDARDS AND SPECIFICATIONS. 2. THE CONTRACTOR SHALL VERIFY EXISTING CONDITIONS AND REPORT ALL DISCREPANCIES TO THE ENGINEER AND OWNER PRIOR TO CONSTRUCTION.3. EXISTING FEATURES NOT SHOWN TO BE REMOVED SHALL BE PROTECTED BY THE CONTRACTOR. ANY DAMAGE SHALL BE REPAIRED TO THE SATISFACTION OF THE ENGINEER AND OWNER AT THE CONTRACTOR'S EXPENSE.4. CONTRACTOR SHALL REMOVE AND DISPOSE OF ALL ITEMS SHOWN FOR DEMOLITION AND REMOVAL IN A SAFE AND LEGAL MANNER OFF AIRPORT PROPERTY, UNLESS OTHERWISE NOTED. 5. UTILITY CONTACT INFORMATION CAN BE FOUND ON PLAN SHEET C1. 6. ANY DAMAGE TO THE EXISTING ABOVE GROUND AND UNDERGROUND UTILITIES TO REMAIN SHALL BE REPAIRED AND/OR REPLACED BY THE CONTRACTOR AT NO COST TO THE OWNER. THE CONTRACTOR SHALL INFORM THEAIRPORT IMMEDIATELY OF ANY DAMAGE DURING CONSTRUCTION.7. UTILITY REPLACEMENT DECISIONS ARE SUBJECT TO THE POLICIES, REGULATIONS, AND COORDINATION EFFORTS OF THE UTILITY OWNERS. COMPLIANCE WITH LOCAL REGULATIONS AND PERMITTING REQUIREMENTS ISNECESSARY FOR ANY MODIFICATIONS TO EXISTING UTILITIES. 8. THE CONTRACTOR SHALL COORDINATE WITH THE AIRPORT OWNER AND APPLICABLE UTILITY OWNERS FOR REMOVAL, RELOCATION AND ABANDONMENT OF EXISTING UTILITIES. THE REMOVAL, RELOCATION AND ABANDONMENTOF EXISTING UTILITIES SHALL BE COMPLETED IN A MANNER THAT MINIMIZES INTERRUPTION OF SERVICE TO THE EXISTING FACILITIES. THE CONTRACTOR SHALL PROVIDE NO LESS THAN ONE-WEEK NOTICE TO THE AIRPORTPRIOR TO REMOVAL, RELOCATION AND ABANDONMENT. THE CONTRACTOR SHALL COORDINATE WITH THE UTILITY COMPANIES AS NEEDED TO ENSURE REMOVAL, RELOCATION AND ABANDONMENT ARE COMPLETED AS SHOWNON THE PLANS. COORDINATION OF UTILITY REMOVAL, RELOCATION AND ABANDONMENT SHALL BE INCIDENTAL TO THE PROJECT. 9. CONTRACTOR SHALL MAINTAIN ACCESS TO THE EXISTING BUILDINGS AT ALL TIMES DURING CONSTRUCTION. 10. CONTRACTOR SHALL POTHOLE EXISTING UTILITIES TO VERIFY DEPTH, SIZE, AND MATERIAL OF EXISTING WATER LINES, ELECTRICAL LINES, TELECOMMUNICATION LINES, ETC. CONTRACTOR SHALL BE RESPONSIBLE FORRELOCATING EXISTING UTILITY LINES AS REQUIRED. COORDINATE WITH EXISTING UTILITY OWNERS A MINIMUM OF 1-MONTH PRIOR TO CONSTRUCTION.11. ALL HOLES REMAINING DUE TO ITEMS BEING REMOVED SHALL BE BACKFILLED WITH SUITABLE BACKFILL SOIL MATERIAL. 12. WHEN OPERATING EQUIPMENT NEAR UTILITY POLES AND OVERHEAD ELECTRIC LINES, MAINTAIN A SAFE WORKING DISTANCE, USE NON-CONDUCTIVE OR WELL-INSULATED EQUIPMENT, AND IMPLEMENT LOCKOUT/TAGOUT PROCEDURES AS NEEDED. ERECT BARRICADES, IMPLEMENT WARNING SIGNS, AND ASSIGN A SPOTTER TO MONITOR PROXIMITY. CONTACT UTILITY PROVIDERS FOR INFORMATION ON SAFE DISTANCES, AND ENSUREPERSONNEL ARE TRAINED ON ELECTRICAL SAFETY PROCEDURES. LEGEND: LIMIT OF DISTURBANCELOD STORM PIPE DEMOLITION ASPHALT MILL & OVERLAY FULL-DEPTH PAVEMENT REPLACEMENT 1 inch = 20 ft.HORIZONTAL FENCE DEMOLITION SHEET NUMBER SHEET TITLE PROJECT NUMBER DATE REVISIONS GFO Hangar COPYRIGHT © 2024THE WILSON GROUP ARCHITECTSALL RIGHTS RESERVED•PRINTED OR ELECTRONIC DRAWINGS ANDDOCUMENTATION MAY NOT BE REPRODUCEDIN ANY FORM WITHOUT WRITTEN PERMISSIONFROM THE WILSON GROUP ARCHITECTS WK DICKSONCIVIL ENGINEER THE WILSON GROUP PO BOX 5510CHARLOTTE, NC 28299(704) 331-9747www.twgarchitects.comNC Cert. No.: 51140 Wilmington International Airport1740 Airport BoulevardWilmington, NC 28405 AN ARDURRA COMPANY 300 N. Third Street, Suite 301Wilmington. NC 28401 WOODSENGINEERING, PA STRUCTURAL ENGINEER 254 N. Front St., Suite 201Wilmington. NC 28401 CBHFENGINEERS, PLLC MECHANICAL, ELECTRICAL AND PLUMBINGENGINEER 2246 Yaupon DriveWilmington. NC 28401 ENGINEERINGCONSULTING SERVICES(ECS) GEOTECHNICAL ENGINEER 6714 Netherlands DriveWilmington. NC 28405 MONTEITHCONSTRUCTION GENERAL CONTRACTOR 208 Princess StreetWilmington. NC 28401 11/04/2024 C3 EXISTING CONDITIONS AND DEMOLITION PLAN 12/02/2024 Date:2024.12.0217:05:17-05'00' GRADING, DRAINAGE AND EROSION CONTROL LEGEND 30.029.530.029.9 EXISTING CONTOURS PROPOSED CONTOURS [SEE NOTE 3] PROPOSED STORM STRUCTURE AND PIPE EXISTING STORM STRUCTURE AND PIPE FINISHED SURFACE/GRADE SPOT SLOPE FINISHED SURFACE ELEVATION [SEE NOTE 4]30.00FS PROPOSED INLET PROTECTION PROPOSED FILTER SOCK PROPOSED CONSTRUCTION ENTRANCE PROPOSED STAGING/STOCKPILE AREA PROPOSED SOD DRAINAGE AREA BOUNDARY 30.0FG FINISHED GRADE ELEVATION 5.00% PROPOSED LIMIT OF DISTURBANCELOD STORM SEWER FLOW DIRECTION PROPOSED COMPOST SOCK CHECK DAM PROPOSED DITCH FLOW LINE> REFER TO SHEET C1 FOR EXISTINGCONDITIONS LEGEND SOIL DELINEATION EXISTING DITCH FLOW LINE> SURVEY BOUNDARY [SEE NOTE 1] EXISTING GRADE SPOT SLOPE5.00% 29.5 29.0 30.0 X X X X X OH W OHW OHW OHW OHW OHW OHW OHW OHW OHW OHW OHW OHW OHW W W FO U U U U U U U U U U U W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W W E E E E E E E E E E E E E ATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFATOFA TSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSA SATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSATSA D XXXXXXXXXXXXXXXXXXXXX SS SS SS SS SS SS SS SS S SSSSSSSSSSSS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS S G G G G G G G G G G G G G LOD LO D LO D LOD LODLODLODLODLODLODLODLODLODLODLODLOD LOD LOD LOD LO D LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LO D LO D LODLOD LOD LOD LODLODLODLODLODLODLOD LO D LOD LOD LO D LODLODLODLO D LODLO D LO D LOD LO D LOD LOD LO D LOD LO D LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LOD LO D LO D LO D LO D LO D LO D LO D LO D LO D > >>>>>>> > >> > > > > > > > >>>>>>>>>>>>>> > > >>>>>>>>> HSG A/D(St) X X X X X X X X X X X XXXXXXXXXXX AC D D D D D D D D P-9 MH-4 MH-7 MH-3 MH-2 MH-1 MH-6 MH-8MH-5 DI-3 DI-2 DI-1 DI-4 P-11 P-3P-1 P-2 P-4 P-6 P-8 P-7 P-5 P-12 P-10 5.08% 5.06% 5.01% -5.0:1 1.70%1.99% 1.59% 1.60% 2.6 7 % 1.16 % 1.1 7 % 1.1 5 % 0. 8 3 % 5.03 % -3.3:1 4.84 % 4.07 % 0.95% 0.50% 2.74% 2.21% 4.45% 7.46% 6.49% 3.27% 3.44% EP-2 EX-5 EX-4 EP-3 EX-3 EX-1 EP-1 4.9 1 % 14.22%12.37% 2.22 % 3.6 6 % 4.2 2 % 1.68% 1.10% 0.80 % 1.84%3.72% 5.41% 0.36 % 1.53% 4.78% 3.6 1 % 1.4 6 % 1.3 3 % 2.48% 0.96% 1.90%3.31% 14 . 7 6 % 7.0 5 % 0.44% 2.14% 0.37% 4.0 5 % 3.1 9 % 5.21% PROP. CONCRETE WASHOUTSEE DETAIL NCG01/C10 PROP. LIMIT OFDISTURBANCE(2.0 ACRES, TOTAL) 2,423 SY OF DISTURBED AREAREQUIRING STABILIZATION(TOTAL, THIS SHEET)SEE DETAIL 5/C9 PROP. INLETPROTECTION (TYP. 11)SEE DETAIL 8/C9 2,574 SY OF PROPOSED SOD(TOTAL, THIS SHEET)SEE NOTE 6 108 LF OF PROP.COMPOST SOCKSEE DETAIL 1/C9 MATCH EXISTINGELEVATION ALONGTAXILANE (TYP.) PROP.STAGING/STOCKPILE AREASEE DETAIL 2/C9 DRAINAGE AREA BOUNDARY(2.46 ACRES) PROJECT PERMIT MAILBOX PROP. CONSTRUCTIONENTRANCE (TYP. 2)SEE DETAIL 1/C9 PROPOSED LEAN-TOBUILDINGFFE = 30.5' PROPOSED HANGAR BUILDINGFFE = 30.5' PROP. 2' WIDE FLUSHCURB FLUME W/ 4'x4'CLASS A RIPRAP APRONSEE DETAIL 2/C6 PROP. ACCESSIBLECURB RAMPSEE DETAIL 7/C11 REGRADE ROADSIDE DITCH W/MINIMUM SLOPE @ 0.33%(MATCH EXISTING FLOWLINE)UPSTREAM INV: 28.5'DOWNSTREAM INV: 28.0' MATCH EXISTINGELEVATION ALONGFLIGHTLINE ROAD (TYP.) CONNECT DOWNSPOUTSTO PROP. ROOF DRAINLEADER PIPE (TYP. 9)SEE DETAIL 10/C11 PROP. COMPOST SOCKCHECK DAM (TYP. 3)SEE DETAIL 6/C9 EXISTING UTILITYSTRUCTURES TO BEPROTECTED DURINGEXCAVATION (TYP.) 197 LF OF PROP.COMPOST SOCKSEE DETAIL 6/C9 MATCH EXISTINGELEVATIONS ALONGPARKING LOT LIMIT OF GRADING 321 LF OF PROP.COMPOST SOCKSEE DETAIL 6/C9 LIMIT OF GRADING PROP. LIMIT OFDISTURBANCE(2.0 ACRES, TOTAL) 2,423 SY OF DISTURBED AREAREQUIRING STABILIZATION(TOTAL, THIS SHEET)SEE DETAIL 5/C9 SURVEY BOUNDARY SOIL TYPEBOUNDARY (TYP.) HSG A/D(St) HSG B/D (Pn) HSG A/D(St) HSG B/D(Pn)29. 0 29. 0 28.5 28. 0 31.0 30.5 30.0 29.5 29.0 28.528.027.5 30.0 29.0 30.0 29.0 29.5 29.0 29.0 29.5 28.0 28.0 29.0 28.0 29.0 29.0 30.5 30.1 30.2 30.3 30.4 30.6 30.7 30.8 30.2 30.3 30.4 29.0 30.0 28. 5 29. 5 30 . 5 30.0 29. 530.0 29.529.0 28.0 30. 029.529.0 28.5 28. 0 29.0 28.5 30 . 5 29. 5 29.0 28 . 0 28. 5 29. 0 29. 5 29.5 30.0 29.5 30 . 0 29. 5 29. 0 29.0 28.0 29.0 28.0 28.0 30.0 28.0 28.0 29.0 30.0 28.5 28.5 29.5 31.0 30.5 30.0 29.5 28.5 27.5 29.5 31.0 30.5 30.0 28.528.0 30.5 30.0 28.528.0 28.028.529.029.5 30. 5 30.0 29. 5 28.5 28. 5 28. 0 27.5 27.5 28.0 28.5 29.0 29. 5 29.5 29. 5 28.5 28.5 28.5 29.0 29.5 30.0 30.5 30.0 29.5 29.0 28.5 29.5 29.0 28.5 29.0 29.0 28.5 28.0 27. 5 29.5 29.0 30.0 29.5 29.0 29.5 30.0 29.5 29.0 29. 5 29. 0 30. 0 29.5 29.029. 5 29.0 31.0 30.61 ' FS 30.45' FS 30. 4 3 ' FS30.40 ' FS29.5 0 ' FS29.40' FS28.90 ' FS 28.50 ' FS 29.06 ' FS 29.8 0 ' FS 30.40' FS 30.3 0 ' FS 30.30 ' FS 30.4 0 ' FS 29.72 ' FS29.61 ' FS29.4 7 ' FS29.32 ' FS 30.40 ' FS 29.10 ' FS28. 9 2 ' FS 30.40' FS 29.94 ' FS 30.0 8 ' FS 30.7 4 ' FS 30.2 8 ' FS 28. 5 ' FG 28.0 ' FG 29.1 4 ' FS 28.8 3 ' FS 28. 6 5 ' FS 29. 5 28. 0 EX-2 DRAINAGE PIPE TABLE PIPE NAME EP-1 EP-2 EP-3 P-1 P-2 P-3 P-4 P-5 P-6 P-7 P-8 P-9 P-10 P-11 P-12 Pipe - (94) TYPE EXISTING 18" RCP EXISTING 18" RCP EXISTING 18" RCP 10" HDPE STORM DRAIN PIPE 8" HDPE STORM DRAIN PIPE 12" HDPE STORM DRAIN PIPE 12" HDPE STORM DRAIN PIPE 10" HDPE ROOF DRAIN LEADER PIPE 10" HDPE ROOF DRAIN LEADER PIPE 10" HDPE ROOF DRAIN LEADER PIPE 10" HDPE ROOF DRAIN LEADER PIPE 10" HDPE ROOF DRAIN LEADER PIPE 10" HDPE ROOF DRAIN LEADER PIPE 10" HDPE ROOF DRAIN LEADER PIPE 10" HDPE ROOF DRAIN LEADER PIPE RCP Class III Pipe LENGTH 49' 49' 50' 34' 19' 46' 33' 24' 42' 42' 14' 28' 15' 73' 62' 117' INVERTS INV IN=22.23INV OUT=22.01 INV IN=21.67INV OUT=21.53 INV IN=22.32INV OUT=22.08 INV IN=25.60INV OUT=24.91 INV IN=26.53INV OUT=26.15 INV IN=24.18INV OUT=23.93 INV IN=23.93INV OUT=22.82 INV IN=27.43INV OUT=27.19 INV IN=27.19INV OUT=26.77 INV IN=26.77INV OUT=25.92 INV IN=25.92INV OUT=25.64 INV IN=25.64INV OUT=25.07 INV IN=25.89INV OUT=25.60 INV IN=27.51INV OUT=26.78 INV IN=26.78INV OUT=26.16 INV IN=21.11INV OUT=20.75 SLOPE 0.45% 0.29% 0.48% 2.00% 2.00% 0.54% 3.33% 1.00% 1.00% 2.00% 2.00% 2.00% 2.00% 1.00% 1.00% 0.31% DRAINAGE STRUCTURE TABLE STRUCTURE NAME DI-1 DI-2 DI-3 DI-4 EX-1 EX-2 EX-3 EX-4 EX-5 MH-1 MH-2 MH-3 MH-4 MH-5 MH-6 MH-7 MH-8 TYPE 12" PVC DRAINAGE BASIN 12" PVC DRAINAGE BASIN 12" PVC DRAINAGE BASIN 12" PVC DRAINAGE BASIN ADJUSTED EXISTING STORM INLET ADJUSTED EXISTING STORM INLET ADJUSTED EXISTING STORM INLET EXISTING STORM INLET EXISTING STORM INLET 12" PVC MANHOLE 12" PVC MANHOLE 12" PVC MANHOLE 12" PVC MANHOLE 12" PVC MANHOLE 12" PVC MANHOLE 12" PVC MANHOLE 12" PVC MANHOLE NORTHINGEASTING N=192911.7617E=2328720.8619 N=192926.3225E=2328791.1998 N=192948.5190E=2328886.7298 N=192936.9611E=2328842.6458 N=192856.9115E=2328696.7792 N=192905.1911E=2328687.0522 N=192930.1258E=2328809.8949 N=192976.5415E=2328790.4062 N=192952.6419E=2328676.1150 N=192780.9929E=2328779.7385 N=192776.1417E=2328756.2746 N=192817.4963E=2328747.7278 N=192858.8496E=2328739.1747 N=192855.9385E=2328725.0976 N=192906.4187E=2328734.4433 N=192816.6254E=2328915.0241 N=192887.7458E=2328900.3185 RIM ELEV. 28.80' 29.10' 28.70' 29.30' 28.90' 29.06' 29.97' 28.31' 27.43' 30.39' 30.33' 30.36' 30.38' 30.11' 30.31' 30.05' 30.26' GRADING AND DRAINAGE PLAN NOTES:1. SURVEY DATA UTILIZED IS CONSOLIDATED FROM MULTIPLE SOURCES. FOR DETAILED SURVEY REFERENCE, COORDINATE GEOMETRYAND SUPPLEMENTAL DATA, REFER TO SHEET C1. ALL ELEVATIONS AND FEATURES SHOULD BE FIELD-VERIFIED PRIOR TO CONSTRUCTIONAND ANY DISCREPANCIES REPORTED TO THE ENGINEER IMMEDIATELY.2. CONTRACTOR SHALL FIELD VERIFY EXACT LOCATION OF ALL EXISTING UTILITIES WITHIN THE PROJECT LIMITS PRIOR TO THE START OFCONSTRUCTION. REPORT DISCREPANCIES TO THE ENGINEER/OWNER'S REPRESENTATIVE BEFORE PROCEEDING.3. CONTRACTOR SHALL FIELD VERIFY INVERT ELEVATIONS AND SLOPES OF EXISTING PIPES OR STRUCTURES IMPACTED BY THIS GRADINGPLAN. REPORT DATA TO THE ENGINEER/OWNER'S REPRESENTATIVE BEFORE SENDING STORM DRAINAGE SHOP DRAWINGS FOR REVIEWBY ENGINEER.4. THE GRADING PLAN CONTOURS ARE SHOWN ARE AT 0.1' INTERVALS ON THE PROPOSED CONCRETE PAVEMENT APRON AND ASPHALTPARKING LOT FOR AN ENHANCED LEVEL OF DETAIL. ALL OTHER PROPOSED GRADING AND EXISTING CONTOURS ARE SHOWN AT 0.5'INTERVALS.5. SPOT ELEVATIONS IN THE PARKING LOT ARE SHOWN AT THE GUTTER FLOW LINE AND CURB FACE AS APPLICABLE.6. ANY DAMAGE TO THE EXISTING STORM SEWER OR OTHER EXISTING UTILITY LINES SHALL BE REPAIRED BY THE CONTRACTOR AT NOCOST TO THE OWNER. CONTRACTOR SHALL INFORM THE AIRPORT IMMEDIATELY OF ANY DAMAGE DURING CONSTRUCTION.7. INSTALL SOD PER ALL MANUFACTURER RECOMMENDATIONS. USE BERMUDA SOD AND REFER TO SPECIFICATIONS.8. ALL GUTTER DOWNSPOUTS SHALL BE CONNECTED TO THE STORM DRAINAGE SYSTEM USING ROOF LEADERS AS SHOWN. COORDINATELOCATIONS WITH THE ARCHITECTURAL PLANS.9. APRON GRADES SHALL NOT EXCEED 1.5%.10. CONTRACTOR IS RESPONSIBLE FOR PROVIDING TEMPORARY DRAINAGE THROUGHOUT THE ENTIRE CONSTRUCTION DURATION. NOADDITIONAL PAYMENT SHALL BE MADE FOR DEWATERING OR BYPASS PUMPING OF STORMWATER ON SITE. SEQUENCE CONSTRUCTIONSUCH THAT CLEAN STORMWATER IS CONVEYED FROM THE SITE TO THE EXISTING DRAINAGE OUTFALLS.11. EARTHWORK OPERATIONS WILL GENERATE EXCESS SOIL MATERIAL. THE CONTRACTOR SHALL ANTICIPATE EXCESS SOIL MATERIALSTHAT WILL NEED TO BE HAULED TO AN APPROVED OFF-SITE LOCATION.12. REFER TO DRAWING C6 FOR STORM DRAINAGE PROFILES. Know what's R C5 GRADING, DRAINAGE & EROSION CONTROL PLAN 12/02/2024 SHEET NUMBER SHEET TITLEPROJECT NUMBER DATE REVISIONS GFO Hangar COPYRIGHT © 2024THE WILSON GROUP ARCHITECTSALL RIGHTS RESERVED•PRINTED OR ELECTRONIC DRAWINGS ANDDOCUMENTATION MAY NOT BE REPRODUCEDIN ANY FORM WITHOUT WRITTEN PERMISSIONFROM THE WILSON GROUP ARCHITECTS WK DICKSONCIVIL ENGINEER THE WILSON GROUP PO BOX 5510CHARLOTTE, NC 28299(704) 331-9747www.twgarchitects.comNC Cert. No.: 51140 Wilmington International Airport1740 Airport BoulevardWilmington, NC 28405 AN ARDURRA COMPANY 300 N. Third Street, Suite 301Wilmington. NC 28401 WOODS ENGINEERING, PA STRUCTURAL ENGINEER 254 N. Front St., Suite 201Wilmington. NC 28401 CBHFENGINEERS, PLLC MECHANICAL, ELECTRICAL AND PLUMBINGENGINEER 2246 Yaupon DriveWilmington. NC 28401 ENGINEERINGCONSULTING SERVICES(ECS) GEOTECHNICAL ENGINEER 6714 Netherlands DriveWilmington. NC 28405 MONTEITHCONSTRUCTION GENERAL CONTRACTOR 208 Princess StreetWilmington. NC 28401 EROSION AND SEDIMENT CONTROL NOTES:1. SEE SHEET C1 FOR CONSTRUCTION SEQUENCE AND EROSION CONTROL MEASURES NOTES.2. CONTRACTOR SHALL INSTALL COMPOST SOCK AT THE DOWNSTREAM PERIMETER OF THE LIMITS OF DISTURBANCE ASINDICATED.3. TOTAL ALLOWABLE DISTURBED AREA FOR THIS PROJECT IS 2.0 ACRES. NO DISTURBANCE IS ALLOWED BEYOND THESHOWN LIMITS OF DISTURBANCE.4. GRASSED AREAS DISTURBED BY CONSTRUCTION ACTIVITIES SHALL BE SEEDED AND MULCHED. SEE DETAIL 5/C9 FORSEEDING SCHEDULE. 1 inch = 20 ft.HORIZONTAL Date:2024.12.0217:06:07-05'00' X X X X X X X X X X X XXXXXXXXXXX AC D PROTECT EXISTING SANITARYLATERAL AT CROSSING PROPOSED MANUALPEDESTRIAN GATESEE DETAIL PROPOSEDSECURITY FENCE(TIE TO EXIST.) D DD D D D D D TAP EXISTING GASMAIN AND PROVIDESERVICE TO METER 4" FIRE SERVICE W/ DCVBACKFLOW ASSEMBLYSEE CFPUA DETAILS SHEET C12 REFER TO DRAWING C5 -GRADING, DRAINAGE & EROSIONCONTROL PLAN FOR DRAINAGEINFORMATION 50 LF OF 4" DIP SEWERSERVICE @ 2% MIN.AND CLEANOUT OIL AND WATER SEPARATOR (OWS)SEE PLUMBERS DRAWINGS FOR THEDESIGN OF THE OWS AND ITSCONNECTIONSPROPOSEDHANGAR120' X 130' PROPOSEDLEAN-TOBUILDING120' X 20'FROM BASIN TO OWS(REFER TO PLUMBINGPLANS BY OTHERS)ROOF DRAIN HEADERPIPE, SEE DRAINAGEPLAN (SEE C5 - GRADING,DRAINAGE & EROSIONCONTROL PLAN FORDRAINAGE INFORMATION) COORDINATE WITH DUKEENERGY TO INSTALL NEWUTILITY POLE ANDELECTRICAL SERVICE PROTECT EXISTINGHOTBOX AT STORM SEWER OWS CONNECTION TOEXISTING SEWER(VERIFY ELEVATION OFSEWER LATERAL ANDCONNECT WITH 4" COUPLING) DOMESTIC 1" SERVICE W/METER AND DCV BACKFLOWASSEMBLY 34 LF OF 4" DIP SEWERSERVICE @ 2% MIN.AND CLEANOUT CONTRACTOR TO PROTECTEXISTING ELECTRICALUTILITIES AND SHALL NOTCUT POWER TO THESE SHEET NUMBER SHEET TITLE PROJECT NUMBER DATE REVISIONS GFO Hangar COPYRIGHT © 2024THE WILSON GROUP ARCHITECTSALL RIGHTS RESERVED•PRINTED OR ELECTRONIC DRAWINGS ANDDOCUMENTATION MAY NOT BE REPRODUCEDIN ANY FORM WITHOUT WRITTEN PERMISSIONFROM THE WILSON GROUP ARCHITECTS WK DICKSONCIVIL ENGINEER THE WILSON GROUP PO BOX 5510CHARLOTTE, NC 28299(704) 331-9747www.twgarchitects.comNC Cert. No.: 51140 Wilmington International Airport1740 Airport BoulevardWilmington, NC 28405 AN ARDURRA COMPANY 300 N. Third Street, Suite 301Wilmington. NC 28401 WOODSENGINEERING, PA STRUCTURAL ENGINEER 254 N. Front St., Suite 201Wilmington. NC 28401 CBHFENGINEERS, PLLC MECHANICAL, ELECTRICAL AND PLUMBINGENGINEER 2246 Yaupon DriveWilmington. NC 28401 ENGINEERINGCONSULTING SERVICES(ECS) GEOTECHNICAL ENGINEER 6714 Netherlands DriveWilmington. NC 28405 MONTEITHCONSTRUCTION GENERAL CONTRACTOR 208 Princess StreetWilmington. NC 28401 LEGEND: LIMIT OF DISTURBANCE PROPOSED ASPHALT PAVEMENT PROPOSED CONCRETE PAVEMENT LOD Know what's R 1 inch = 20 ft.HORIZONTAL C8 UTILITY PLAN 12/02/2024 PROPOSED OVERHEAD ELECTRIC LINE UTILITIES NOTES 1. SEE SHEET C1FOR LEGEND AND UTILITY NOTES. 2. REFER TO DRAWING C12FOR ALL CFPUA DETAILS. 3. PAYMENT FOR THE CONNECTIONS, FITTINGS ANDAPPURTENANCES REQUIRED FOR THE SEWER LINECONSTRUCTION IS INCIDENTAL TO THE BOX HANGAR WITH SLIDINGDOOR AND FLOOR SLAB, COMPLETE", ITEM OF WORK. NOSEPARATE MEASUREMENT OR PAYMENT SHALL BE MADE FOR THISWORK. 4. CONTRACTOR TO COORDINATE WITH CFPUA FOR INSTALLATION OFWATER SERVICE METER. 5. CONTRACTOR SHALL LOCATE THE EXISTING SERVICE LATERALS ATTHE CLEANOUT LOCATIONS AND DETERMINE THE CONNECTIONELEVATION PRIOR TO ORDERING MATERIALS. 6. COORDINATE PROPOSED COMMUNICATION SERVICE WITH AT&T. 7. SEE PLUMBERS DRAWINGS FOR SPRINKLER INSTALLATION ANDREQUIREMENT AND DETAILS.