HomeMy WebLinkAboutARQ-ILM Stormwater Booklet 061925
TABLE OF CONTENTS___________________________________
Stormwater Management Statement
Storm Drainage
Calculations Section 1
Pre-Post Development Section 2
Storm Water Run-Off and Routing
Extended Dry Detention Basin (EDDB)
Calculations Section 3
Treatment Swale
Calculations Section 4
Exhibits Appendix
ARQ-ILM
N Kerr Avenue & Morris Road
A Portion of Wilmington International Airport Property
New Hanover County, North Carolina
Stormwater Management Statement
Project Description:
This site is located on the western side of property owned by the New Hanover County Airport
Authority Wilmington International Airport (ILM) and being ground leased by ARQ Realty,
LLC to develop 36.20 acres for the purpose of 1 Flight School/Office building, 6 Corporate
Hangars, 1 Maintenance Hangar, 1 Office/Commercial building, 5 Tee Hangars for private
lease, and supporting infrastructure including; an entrance drive, parking, aprons, tarmac,
and taxilanes. The proposed site is located on the north and south sides of Morris Road and
adjacent to the western right-of-way of N. Kerr Avenue. The project site area consists of
portions of PID/Parcel Numbers: R04200-001-023-000, R04210-001-006-000, R04210-001-
005-000, R04210-001-004-000, R04210-001-003-000, R04210-001-002-000, R04210-001-
001-000, R04200-001-022-000, R04200-001-021-000, R04200-001-027-000, R04210-001-
007-000, R04210-001-008-000, and R04200-001-025-000.
Existing Conditions:
The existing site consists of an existing hangar at the terminus of Morris Road, with the
remainder being cleared and undeveloped land. The project site is within the Cape Fear River
Basin and drains to Smith Creek (Index No. 18-74-63). The site contains Non-Riparian
Wetlands on the north and south side and Non-Wetland Open Waters on the north. Wetland
and open water impact permits have been obtained under Permit No. SAW-2023-02065, a
copy of which is contained within this report. The site does not drain to SA; ORW designated
waters and is not located within one half mile of SA classified waters. A portion of the
contributory areas to the proposed SCMs are outside of the Project Area (the proposed
development boundary) but are within the area limits of prior permit SW8 040836.
Additionally, portions of the area within the Project Area are occupied by existing built-upon
area (building, ramp area, and roadway) from which runoff is not currently collected and
treated. The total area of such untreated built-upon area within the Project Area is 125,387
S.F. or 2.88 AC. Additionally, 3,986 S.F. or .09 AC. of built-upon area within the drainage
area of the Project Area (and associated contributory areas to the proposed SCMs) is
currently included as built-upon area in permit SW8 9910003.
Proposed Development:
This project proposes the addition of 236,380 sf of new building area consisting of a Flight
School/office, Commercial/Retail building and multiple airplane hangars along with
supporting infrastructure (asphalt drive, parking, concrete apron/taxi-lanes, and sidewalks).
Of the total proposed Built Upon Area (BUA), 99.03% will be collected via Drop Inlets,
Trench Grates, concrete flumes, and directed to 3 proposed Extended Dry Detention Basins.
Flow from the dry basins will be discharged through SCM riser/outlet pipes to corresponding
Vegetated Swales designed for the 10 year storm event. EDDB East-1A and Swale East-1A,
and EDDB East-1C and Swale East-1C will discharge into existing Non-Riparian Wetlands
and EDDB East-1B and Swale East-1B will discharge just west of N Kerr Ave, into an existing
tributary of Smith Creek. The small area of proposed built-upon area that will not (and
cannot practically be) intercepted and treated via the proposed SCMs totals .23 AC. This
area of untreated built-upon area is significantly less (2.65 acres less) than the area of the
existing currently untreated built-upon area that will be eliminated or intercepted by
implementation of the proposed plan. As such, the proposed stormwater management plan
will achieve treatment of a greater area of built-upon area than the net increase in built-upon
area that will be created by implementation of the proposed development plan.
Applicable Stormwater Rules:
This project has been designed to conform to 2017 Rules and MDC with certain modifications
imposed by restrictions in the 2004 Master Plan for ILM. The most significant of these
restrictions relate to a prohibition against standing water—thereby limiting the SCMs to
EDDBs and grassed swales, and modification of forebay design criteria to prevent retention of
standing water. Also, the proposed plan places the grassed swales below the EDDBs.
Per NCDEQ Stormwater Design Manual, required swale volume is "the volume of runoff from
a .75"/hr storm that result in a flow depth of 6" or less and a hydraulic retention time of 4
minutes or greater in a trapezoidal swale with side slopes no steeper than 3:1." Due to the
placement of the grassed swales below the EDDBs in this project, the swales will be
subjected to the routed flows through the EDDBs. Therefore, the discharges into the swales
from a 7.5"/hr storm were calculated and the required swale lengths were determined based
on providing a minimum of 4 minutes of hydraulic retention time is the swales. For
purposes of maximizing the pollutant removal function of the proposed stormwater
management system, the length of the proposed swales were made as long as site conditions
allow. Additionally, the plan proposes horizontal baffles within the swales to further enhance
the pollution removal function of the swales and achieve the cited effective swale slopes.
Peak Stormwater Runoff Note:
This project will be permitted as High Density and will utilize 3 Dry Detention Basins and 3
Vegetated Swales for stormwater detention and treatment. Based on NCDEQ most recent
MDC’s, the Dry Detention Basins are sized to capture and treat the first 1.5” of runoff from
their corresponding contributory drainage areas. The Dry Detention Basins will discharge
into corresponding Vegetated Swales sized to convey the 10 year storm event. See
calculations and charts within this report. Post development discharges at the two main
analysis points, Point #1 located on the north side of the project, at the existing tributary of
Smith Creek on the west side of N Kerr Avenue and Point #5 located on the south side of the
project, at the existing tributary of Smith Creek on the west side of N Kerr Avenue, are less
than Pre-Development peak discharge at these locations. All three Dry Detention basins will
utilize a gravel lined forebay for velocity dissipation and to deter wildlife per Airport
standards.
This project was modeled using Hydraflow Hydrographs, NOAA Atlas 14 rainfall data for the
1, 2, 10, 25, and 100 year storm events. See Pre & Post Development runoff tables below and
for detailed calculations, see this report, Stormwater Calculations for “ARQ-ILM” dated June
17, 2025 and prepared by William G. Daniel & Assoc., P.A.
Pre-Development Conditions
Point 1 Year 2 Year 10 year 25 year 100 year
Analysis Pt # (cfs) (cfs) (cfs) (cfs) (cfs)
1 7.51 8.97 12.03 13.71 16.22
2 16.28 19.45 26.06 29.70 35.15
3 3.93 4.69 6.29 7.17 8.48
4 2.88 3.43 4.60 5.25 6.21
5 1.83 2.19 2.93 3.34 3.95
Total 32.43 38.73 51.91 59.17 70.01
Post-Development Conditions Total :
Post-Development Conditions
Point 1 Year 2 Year 10 year 25 year 100 year
# (cfs) (cfs) (cfs) (cfs) (cfs)
1 4.37 4.96 6.17 6.76 7.56
2 4.74 5.19 5.99 8.71 19.69
3 0.68 0.81 1.08 1.23 1.46
4 0.74 0.88 1.18 1.35 1.59
5 4.08 4.68 5.79 8.98 18.11
Total 14.61 16.52 20.21 27.03 48.41
Conclusion:
The proposed stormwater management measures will achieve the performance goals and
requirements of the 2017 Rules and MDC while incorporating the modifications required to
honor the restrictions specific to the 2004 ILM Stormwater Master Plan.
PROP.
FES 40
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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X
X
X
X
X
X
X
X
X
X
X
X
X
Wilmington International Airport
PROP.
MH 41A
PROP.
GI 71
PROP.
CB 70
PROPOSED
HANGAR B
FFE 21.00
PROPOSED
HANGAR A
FFE 21.00
PROP.
JB 58
PROP.
SLOT DRAIN
PROP.
JB 43
CEMETERY
ACCESS
PROPOSED
FENCE
PROPOSED
RETAINING
WALL
262 LF GRASSED
SWALE EAST-1A
FROM
EDDB EAST-1A
EDDB EAST-1A
162 LF GRASSED
SWALE EAST-1B
FROM
EDDB EAST-1B
PROP. RISER 40B
TOP 14.85
12" INV 12.00
18" INV 10.60
PROP. FES 31
INV 9.5
PROP.
18" HDPE
PROP.
12" HDPE
PRO
P
.
4
2
"
H
D
P
E
PR
O
P
.
3
6
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PROP. FES 40A
INV 10.30
PROP.
END 74
12
11
10
10
'
T
O
P
E
L
E
V
1
6
.
0
3
'
T
O
P
E
L
E
V
1
2
.
0
20
2
0
20
20
20
17
18
19
20
1
2
20
20
20
20
15
1617
1
3
14
1
5
16
16
15
1
4
13
11
10
12
11
1
0
10
11
12
12
1
1
10
13
1415
1617
1819
20
1314
15
1617
1819
20
14
13
1
2
12 1
1
1
0
PROP.
18" RCP
PRO
P
.
1
2
"
H
D
P
E
PROP.
JB 61
PROP.
SLOT DRAIN
TOP 19.71
PROP. 18
"
H
D
P
E
20
19
20
20
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAMX
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Wilmington International Airport
PRO
P
.
1
8
"
H
D
P
E
20
20
LIMITS OF
DISTURBANCE
33.58 ACRES
PROP.
CB 41
PR
O
P
.
4
2
"
H
D
P
E
PRO
P
.
4
2
"
H
D
P
E
GPR CEMETERY BUFFER
FROM NEW SOUTH
ASSOC., INC.
(ARCHAEOLOGIST)
GPR CEMETERY BUFFER
FROM NEW SOUTH ASSOC.,
INC. (ARCHAEOLOGIST)
LIMITS OF
DISTURBANCE
33.58 ACRES
PROPOSED
NCDOT STD
GUARDRAIL
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 15.0
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PRO
P
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PROP.
CB 72
PROP.
CB 42
1
3
1
4
1
4
1
3
1
3
1
4
1
5
1
5
1
4
1
3
FOREBAY
PROP. 10'
RIP-RAP
SPILLWAY
EL 14.0
PROP. 4' WIDE
1' TALL
BERM FOR
FLOW DIVERSION
WW
SS SS
W
EE
TT
GG
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
As Shown
EDDB EAST-1A
Plan / Profile
SCM - 1Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
February 17, 2025
ARQ - ILM
0'40'80'120'
GRAPHIC SCALE
(IN FEET)
1 INCH = 40 FT
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARCHITECT:
DEVELOPER:
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
06/17/2025
Bart J. McClain
EDDB EAST-1A PLAN VIEW
EDDB EAST-1A PROFILE VIEW
HORIZ SCALE 1" = 5'
VERT SCALE 1" = 2'
HORIZ SCALE 1" = 40'
SHWT NOTE:
SHWT borings were conducted by Soil & Environmental
Consultants, Inc., on March 13, 2024 to determine
approximate SHWT elevations at the EDDB locations.
All EDDB's are 1' or more above the SHWT at the
boring locations.
Note;
EDDB East-1A utilizes a flow diversion berm
to prevent short circuiting of the proposed basin.
APPROX. 0.5% BOTTOM
SLOPE FROM FOREBAY
TO OUTLET PIPE.
ANTI-FLOATATION
CONCRETE
PROP. 43.38' 18" RCP @ 0.69%
TOP OF 10' DAM ELEV. 16.00
3:1 SL
O
P
E
SLOPE (
S
E
E
G
R
A
D
I
N
G
P
L
A
N
)
PROPOSED
TRASH RACK
RISER TOP
ELEV 14.85
10' EMERGENCY SPILLWAY ELEV. 15.00
PROPOSED 12' PVC
DRAWDOWN PIPE
INV 12.77
RISER 40B
INV 10.60
FES 40A
18" RCP
INV 10.30
WIRE MESH
OVER OPENING
PROP. 2'x2' INSIDE
CONCRETE RISERTEMPORARY POOL
ELEV. 14.67
TREATMENT SWALE
4' BOTTOM, 3:1 SIDES, 0.5% SLOPE
PROP. 20.50' 42" HDPE @ 0.54%
FES 40
42" HDPE
14.00
4' FOREBAY BERM
ELEV. 15.0
FOREBAY
BOTTOM
ELEV. 13.00
3:1
S
L
O
P
E
PROP.
VELOCITY
DISSIPATOR
3:1 3:
1
10' WIDE RIP-RAP
SPILLWAY/KEYWAY
THROUGH DAM.
EL. 14.0
GEO-TEXTILE
UNDERLINER WITH
4" CABC ABOVE.
CLASS A RIP-RAP
ABOVE CABC TO
ALLOW FILTRATION
FROM FOREBAY TO
BASIN TO PREVENT
PONDING.
Forebay Note;
A rip-rap spillway/keyway is being used in
the forebay berm to impound water and allow
sediment to settle out, as well as allow to
percolate through the keyway to prevent
extended ponding within the forebay.
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROP.
JB 51
BUILDING #3
PROPOSED
2-STORY
FFE 19.25
PROP. FES 80
INV 17.00
PROP.
GI 47
PR
O
P
.
1
5
"
H
D
P
E
PROP. 15" HDPE
PROP. RISER 37
TOP 17.80
12" INV 15.00
18" INV 12.74
PROP.
GI 10
PROP.
GI 11
PROP.
GI 28
PROP.
GI 27
FENCE
EDDB EAST-1B
PROP.
ST MH 36
PROP.
ST MH 35
PROP. FES 81
INV 17.50
PROP.
CB 9
PROP.
CB 8
PR
O
P
.
1
5
"
H
D
P
E
PROP.
15" HDPE
PROP. 77.00'
18" HDPE
@ 0.65%
PR
O
P
.
1
8
"
H
D
P
E
PROP.
18" RCP
PR
O
P
.
1
2
"
H
D
P
E
PROP. FES
INV 18.65
PROP. FES
INV 18.10
PROP. 81.22'
18" RCP @ 0.68%
PRO
P
.
1
2
"
H
D
P
E
PROP. 6' GAP
NO SLOT DRAIN
PROP.
VEL DISS
PROP.
VEL DISS/
22
2
2
22212019
21
20
20
20
20
19
2
0
20
20
20
20
1716
15
2121201918
17 16
19
19
19
1
8
18
171819202122
22
2
2
21
20
19
18
22
22 22 22
22
2
222
22
22
22
22
22
23
23
23
23
23
23
23
23
23
22
21
22
18
19
18
17 16
21
22
21
2
1 21
10
'
T
O
P
E
L
E
V
2
0
.
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROPOSED
GSE BLDG.
FFE 21.00
PROPOSED
HANGAR E
FFE 21.00
HANGAR
FFE 21.20
BUILDING #1
21
21
21
19
PROP.
SLOT DRAIN
TOP 20.55
20
20
20
PR
O
P
.
1
8
"
H
D
P
E
PR
O
P
.
1
8
"
H
D
P
E
21
LIMITS OF
DISTURBANCE
33.60 ACRES
PROP.
GI 45E
20
2
0
20
1
9
19
20 21
2
2
70' R
45' R
PROPOSED
24" SPILL
CURB (TYP)
PROPOSED
STOP BAR
AND SIGN
PROPOSED
STOP BAR
AND SIGN
PROPOSED
24" SPILL
CURB (TYP)
PROPOSED
24" STD.
CURB (TYP)
PROP. 81.22'
18" RCP @ 0.68%
PROP. FES
INV 18.10
PROP. FES
INV 18.65
16
.
5
1
6
PROP. 10'
RIP-RAP
SPILLWAY
EL 18.0
1716
18
1
5
.
5
15.5
18 17
FOREBAY
FOREBAY
FOREBAY
PROP. 10'
RIP-RAP
SPILLWAY
EL 17.5
PROP. 10'
RIP-RAP
SPILLWAY
EL 16.5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROP.
GI 73
PROPOSED
HANGAR D
FFE 21.00
PROP.
SLOT DRAIN
TOP 20.21
PROP.
JB 46
PROP.
GI 30B
PROP.
FES 30A
PROP. FES
INV 13.00
PROP. FES
INV 11.70
PROP.
DI 34
PROPOSED
FENCE
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROPOSED
RETAINING
WALL
PROP
FENCE
162 LF GRASSED
SWALE EAST-1B
FROM
EDDB EAST-1B
PROP. FES 31
INV 9.5
PROP.
CB 33
PROP.
ST MH 32
PROP.
18" HDPE
PR
O
P
.
1
8
"
H
D
P
E
PROP.
24" HDPE
PROP. 84.56'
18" RCP @ 1.54%
PROP.
18" HDPE
PROP.
12" HDPE
PROP.
JB 45D
PROP.
JB 45C
PR
O
P
.
1
5
"
H
D
P
E
PR
O
P
.
1
2
"
H
D
P
E
20
20
20
20
19
18
17
16
15
1617
1819
20
11
10
15
1617
1819
20
14
91011121211
10
9101112
13
14
13
1
2
12 111
0
PROP.
18" RCP
PROP. RAILROAD
TIE CHECK DAM
PROP. RAILROAD
TIE CHECK DAM
(TYP)
X
X
X
X
X
X
X
X
X
LIMITS OF
DISTURBANCE
33.60 ACRES
PROP.
CB 72
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
1" = 100'
EDDB EAST-1B
Plan / Profile
SCM - 2Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
ARQ - ILM
0'40'80'120'
GRAPHIC SCALE
(IN FEET)
1 INCH = 40 FT
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARCHITECT:
DEVELOPER:
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
Bart J. McClain
EDDB EAST-1B PLAN VIEW SWALE EAST-1B
EDDB EAST-1B PROFILE VIEW
HORIZ SCALE 1" = 5'
VERT SCALE 1" = 2'
HORIZ SCALE 1" = 40'HORIZ SCALE 1" = 40'
February 17, 2025
06/17/2025
WW
SS SS
W
EE
TT
GG
ANTI-FLOATATION
CONCRETE
PROP. 18.89' 18" RCP @ 0.53%
TOP OF 10' DAM ELEV. 20.00
3:1 SL
O
P
E
PROPOSED
TRASH RACK
RISER TOP
ELEV 17.80
10' EMERGENCY SPILLWAY ELEV. 19.00
PROPOSED 12' PVC
DRAWDOWN PIPE
INV 15.00
RISER 37
INV 12.74
WIRE MESH
OVER OPENING
PROP. 2'x2' INSIDE
CONCRETE RISER
TEMPORARY POOL
ELEV. 16.50
PROP. 77.00' 18" HDPE @ 0.65%
FES
18" HDPE
17.00
3:1
S
L
O
P
E
TO MH 36PROP.
VELOCITY
DISSIPATOR
4' FOREBAY BERM
SEE PLAN VIEW
FOR FOREBAY
ELEVATIONS
3:1 3:
1
10' WIDE RIP-RAP
SPILLWAY/KEYWAY
THROUGH DAM.
FOREBAY
BOTTOM
SEE PLAN
GEO-TEXTILE
UNDERLINER WITH
4" CABC ABOVE.
CLASS A RIP-RAP
ABOVE CABC TO
ALLOW FILTRATION
FROM FOREBAY TO
BASIN TO PREVENT
PONDING.
APPROX. 0.5% BOTTOM
SLOPE FROM FOREBAY
TO OUTLET PIPE.
Forebay Note;
A rip-rap spillway/keyway is being used in
the forebay berm to impound water and allow
sediment to settle out, as well as allow to
percolate through the keyway to prevent
extended ponding within the forebay.
SHWT NOTE:
SHWT borings were conducted by Soil & Environmental
Consultants, Inc., on March 13, 2024 to determine
approximate SHWT elevations at the EDDB locations.
All EDDB's are 1' or more above the SHWT at the
boring locations.
PROP. 30" HDPE
PROP. ADS
SLOT DRAIN
TOP 22.00
PR
O
P
.
3
6
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PROP.
FES 1
PROP.
RISER 1D
TOP 16.50
12" INV 13.8
18" INV 13.8
PROP.
GI 2
PROPOSED
HANGAR 4
FFE 22.50
251 LF GRASSED
SWALE EAST-1C FROM
EDDB EAST-1C
EDDB EAST-1C
PROP.
FES 1A
PROP.
GI 1B
PROP.
MH 3
PR
O
P
.
2
4
"
H
D
P
E
PROP.
FES 1C
PROP.
VEL DISS
1817161514
18
10
'
T
O
P
E
L
E
V
1
8
.
0
17 16
15 14
13
13 14
15 15
14
2221201918
17 161514
222120
19
22
21 20
21
18
17 161514
PROP. 12" HDP
E
PROP. ADS
SLOT DRAIN
TOP 22.00PROP. 6' GAP
NO SLOT DRAIN
END
PIPE 2B
INV 19.50
END
PIPE 2A
INV 18.50
PROP.
18" RCP
PROP.
18" RCP
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 17.0
LIMITS OF
DISTURBANCE
33.60 ACRES
END PROP
SILT FENCE & BEGIN
COMBINATION SILT AND
TREE PROTECTION FENCE
PROPOSED COMBINATION
SILT AND TREE PROTECTION
FENCE
PROPOSED COMBINATION
SILT AND TREE PROTECTION
FENCE
16
15
14
16
15
14
PROP. 10'
RIP-RAP
SPILLWAY
EL 15.0
FOREBAY
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
1" = 100'
EDDB EAST-1C
Plan / Profile
SCM - 3Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
ARQ - ILM
0'40'80'120'
GRAPHIC SCALE
(IN FEET)
1 INCH = 40 FT
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARCHITECT:
DEVELOPER:
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
Bart J. McClain
EDDB EAST-1C PLAN VIEW
EDDB EAST-1C PROFILE VIEW
HORIZ SCALE 1" = 5'
VERT SCALE 1" = 2'
HORIZ SCALE 1" = 40'
February 17, 2025
06/17/2025
WW
SS SS
W
EE
TT
GG
ANTI-FLOATATION
CONCRETE
PROP. 38.50' 18" RCP @ 1.04%
TOP OF 10' DAM ELEV. 18.00
3:1 SL
O
P
E
PROPOSED
TRASH RACK
RISER TOP
ELEV 16.50
10' EMERGENCY SPILLWAY ELEV. 17.00
PROPOSED 12' PVC
DRAWDOWN PIPE
INV 14.00
RISER 1D
INV 14.00
WIRE MESH
OVER OPENING
PROP. 2'x2' INSIDE
CONCRETE RISER
TEMPORARY POOL
ELEV. 16.42
PROP. 63.89' 36" HDPE @ 0.50%
FES 1
36" HDPE
INV 14.20
3:1
S
L
O
P
E
FES 1C
18" RCP
INV 13.60
TREATMENT SWALE
4' BOTTOM, 3:1 SIDES, 0.5% SLOPE
3:1
S
L
O
P
E
TO GI 2
3:1 3:
1
10' WIDE RIP-RAP
SPILLWAY/KEYWAY
THROUGH DAM.
EL. 15.0
APPROX. 0.5% BOTTOM
SLOPE FROM FOREBAY
TO OUTLET PIPE.
4' FOREBAY BERM
ELEV. 16.0
PROP.
VELOCITY
DISSIPATOR
FOREBAY
BOTTOM
SEE PLAN
GEO-TEXTILE
UNDERLINER WITH
4" CABC ABOVE.
CLASS A RIP-RAP
ABOVE CABC TO
ALLOW FILTRATION
FROM FOREBAY TO
BASIN TO PREVENT
PONDING.
Forebay Note;
A rip-rap spillway/keyway is being used in
the forebay berm to impound water and allow
sediment to settle out, as well as allow to
percolate through the keyway to prevent
extended ponding within the forebay.
SHWT NOTE:
SHWT borings were conducted by Soil & Environmental
Consultants, Inc., on March 13, 2024 to determine
approximate SHWT elevations at the EDDB locations.
All EDDB's are 1' or more above the SHWT at the
boring locations.
6-24
6-24
Wilmington International Airport
Wilmington International Airport
W
W
W
W
W
W
W
W
W
FMO
CO
CO
T
A
X
I
W
A
Y
N
O
V
E
M
B
E
R
RUN
W
A
Y
6
-
2
4
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
*
Analysis
Point #1
*Analysis
Point #2
*
Analysis
Point #3
*
Analysis
Point #5
*Analysis
Point #4
Wilmington International Airport
Wilmington International Airport
PROP. 81.22'18" RCP @ 0.68%
PROP. FES
INV 18.10
PROP. FESINV 18.65
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROP. SECURITY FEN
C
E
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
06/17/2025
Bart J. McClain
1" = 100'
Pre-Development
Stormwater Runoff Plan
CS - 1
February 12, 2025
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARQ - ILM
0'100'200'300'
GRAPHIC SCALE
(IN FEET)
1 INCH = 100 FT
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
PROP.FES 40
6-24
6-24
X
X
X X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X
X
X X
X
X
X
X
X
X
X
X
X
X X
X
X
W
W
W
W
W
W
W
W
W
FMO
CO
CO
X
X
X
X
X
X
X X X X X X X X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROP.JB 50
PROP.JB 51
PROP.
MH 41A
PROP.GI 73
PROP.
GI 71
PROP.
CB 70
PROP.SLOT DRAINTOP 20.00
PROP.JB 64
BUILDING #3
PROPOSED
2-STORY
FFE 19.25
PROPOSED
HANGAR D
FFE 21.00
PROPOSED
HANGAR C
FFE 21.00
PROPOSED
HANGAR B
FFE 21.00
PROPOSED
HANGAR A
FFE 21.00
PROP.END 57
PROP.JB 66
PROP.
GI 65
PROP.
JB 59
PROP.JB 58
PROP.JB 44
PROP.
SLOT DRAINTOP 20.10
PROP.SLOT DRAIN
TOP VARIES
PROP.
SLOT DRAINTOP 20.10
PROP.
SLOT DRAINTOP 20.21
PROP.JB 56
END PIPE
20A
PROP. 30" HDPE
PROP. ADS
SLOT DRAINTOP 22.00
PROP. ADS
SLOT DRAINTOP 22.10
PROP.
SLOT DRAIN
TOP VARIES
PROP.
JB 43
PROP.JB 46
PROP.SLOT DRAINTOP 20.21
PROP.GI 30B
PROP.FES 30A
PROP. FES 80
INV 17.00
PROP. FES
INV 13.00
PROP. FES
INV 11.70
PROP.
GI 47
PROP. SWALE140 LF
PR
O
P
.
3
6
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PROP. 12" HDPE
PR
O
P
.
1
5
"
H
D
P
E
PROP. 15" HDPE
PROP.
GI 21
PROP.
GI 23
PROP.DI 34
PROP. RISER 37
TOP 17.80
12" INV 15.0018" INV 12.74
PROP.FES 1
PROP.RISER 1D
TOP 16.5012" INV 13.818" INV 13.8
PROP.GI 10
PROP.GI 11
PROP.GI 28
PROP.
GI 27
PROP.GI 2
PROP.
GI 24
PROP.
MH 22
RUN
W
A
Y
6
-
2
4
20'
10
'
CEMETERYACCESS
PROPOSEDFENCE
PROPOSED
HANGAR 1
FFE 22.50
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROPOSED
HANGAR 5
FFE 22.50
T
A
X
I
W
A
Y
N
O
V
E
M
B
E
R
PROPOSEDRETAININGWALL
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
PROPOSED
HANGAR 4
FFE 22.50
PROPOSED
HANGAR 3
FFE 22.50
PROPOSED
HANGAR 2
FFE 22.50
PROPFENCE
EXISTINGGRASS
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
*
Analysis
Point #1
*Analysis
Point #2
*
Analysis
Point #3
*
Analysis
Point #5
*Analysis
Point #4
262 LF GRASSED
SWALE EAST-1A
FROM
EDDB EAST-1A
EDDB EAST-1A
162 LF GRASSED
SWALE EAST-1B
FROM
EDDB EAST-1B
EDDB EAST-1B
251 LF GRASSED
SWALE EAST-1C FROM
EDDB EAST-1C
EDDB EAST-1C
PROP. RISER 40BTOP 14.85
12" INV 12.0018" INV 10.60
PROP.
FES 1A
PROP.
GI 1B
PROP. FES 31INV 9.5
PROP.ST MH 36
PROP.
ST MH 35
PROP.CB 33
PROP.ST MH 32
PROP. FES 81INV 17.50
PROP.
CB 9
PROP.
CB 8
PROP.
MH 3
PRO
P
.
2
4
"
H
D
P
E
PROP.
MH 4
PR
O
P
.
2
4
"
H
D
P
E
PROP.MH 5
PRO
P
.
2
4
"
H
D
P
E
PROP.
MH 6
PRO
P
.
1
8
"
H
D
P
E
PROP.
MH 7
PR
O
P
.
1
5
"
H
D
P
E
PROP.
GI 25
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
1
8
"
H
D
P
E
PROP. 15" HDPE
PROP.GI 29
PROP. 135.17'
1
2
"
H
D
P
E
@
0
.
5
0
%
PROP.
15" HDPE
PROP. 77.00'
18" HDPE@ 0.65%
PR
O
P
.
1
8
"
H
D
P
E
PROP.18" RCP
PROP.18" HDPE
PRO
P
.
1
8
"
H
D
P
E
PROP.
24" HDPE
PROP. 84.56'
18" RCP @ 1.54%
PROP.18" HDPE
PROP.
12" HDPE
PROP.12" HDPE
PROP
.
4
2
"
H
D
P
E
PRO
P
.
3
6
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP.
2
4
"
H
D
P
E
PRO
P
.
3
0
"
H
D
P
E
PROP
.
2
4
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PROP. FESINV 18.65
PROP. FES
INV 18.10
PROP. 81.22'18" RCP @ 0.68%
PROP. 12" HDPE
PROP. 12" HDPE
PROP. 22°BEND
PROP. ADS
SLOT DRAINTOP 22.00
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE
22A
PROP. 45°BEND
PROP. ADSSLOT DRAIN
TOP 21.95
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE24A
PROP. 22°
BEND
PROP. 90' SLOT DRA
I
N
PROP. 90' SLOT DR
A
I
N
PROP. 100' SLOT DR
A
I
N
PROP. 90' SLOT DRA
I
N
PROP. 70' SLOT DRA
I
N
PROP. 80' SLOT DR
A
I
N
PROP. 70' SLOT DRA
I
N
PROP. 70' SLOT DRA
I
N
PROP. ADSSLOT DRAIN
TOP 22.00
PROP. ADS
SLOT DRAINTOP 21.95
PROP. ADSSLOT DRAIN
TOP 22.10
PROP. 60' SLOT DRAI
N
PROP. 60' SLOT DRAIN
PROP. 90' SLOT DR
A
I
N
PROP.GI 26
PROP.SLOT DRAIN
TOP 21.25
END PIPE25C
5' GAP IN
SLOT DRAINPROP.
PROP.
FES 1C
END PIPE4A
END PIPE
5A
END PIPE
6A
PROP.MH 20
PROP. FES 40A
INV 10.30
PROP.END 74
PROP.JB 45D
PROP.JB 45C
PROP.JB 45B
PROP.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PROP
.
1
2
"
H
D
P
E
PRO
P
.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PROP.JB 58B
PROP. 6' GAPNO SLOT DRAIN
PROP.
JB 45
PROP.JB 25B
12" HDPE
PROP.
15" HDPE
PROP. 18" HDPE
PROP.JB 25A
PROP.VEL DISS
PROP.
VEL DISS/
PROP.
VEL DISS
21
22
21
21
21
21
21
21
18
12
11
10
10
'
T
O
P
E
L
E
V
1
6
.
0
3'
T
O
P
E
L
E
V
1
2
.
0
20
2020
20
20
17161514
18
10'
T
O
P
E
L
E
V
1
8
.
0
17 16151413
1314151514
222120191817161514
13
22212019
22
22
22212019 21
22
22
21
20
21
20
22
22
22
22
2120
22
21
22 21
20
20
20
19
17
18
19
20
12
20
20
20
20
20
20
20
19
18 17
16
151617
1819
20
1314
15
16
16
15
14
13
11
10
22
22
22
22
22
22
21
21
21
20
20
20
20
20
22
1817 161514
1716
15
2121201918 17 16
19
19
19
18
18
171819202122
22 22
21
12
11
10
10
11
1212
11
10
13
1415
1617
1819
20
131415
1617
1819
20
20
19
18
15
1617
1819
20
14
9101112121110
9101112
13
1413
1
2121110
22 22
22 22
22 22 22
22
2222
22
2222
22
22
22
22
22
23
23
23
23
23
23
23
2323
22
21
22
18
19
18
1716
21
22
22
22
22
22
21
21 21
22
22
22
22
22
22
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 12" HDPE
PROP. ADSSLOT DRAIN
TOP 22.00PROP. 6' GAP
NO SLOT DRAIN
END
PIPE 2BINV 19.50
END
PIPE 2AINV 18.50
X
X
X X X X X X
PROP.
18" RCP
PROP.
18" RCP
PROP.18" RCP
PROP.
18" RCP
X
X
X
20
PRO
P
.
2
4
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
22
22
22
22
22
22
22
PROP. 6"Wx12"HCONC. CURB
TOP 23.40
PROP.JB 61
PROP.SLOT DRAIN
TOP 19.71
PROP.JB 67
PROP
.
1
8
"
H
D
P
E
PROP. 18"
H
D
P
E
20
20
20
19
19
20
20
20
20
20
20
20
20
20
20
20
20
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
10'
T
O
P
E
L
E
V
2
0
.
0
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 17.0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X X X X X X X X X X
X
X
X
X
X
X
PROPOSED
GSE BLDG.
FFE 21.00
PROPOSED
HANGAR E
FFE 21.00
PROPOSED
HANGAR G
FFE 21.20
PROPOSED
HANGAR F
FFE 21.20
HANGAR
FFE 21.20
BUILDING #1
BUILDING 1OFFICES/SCHOOLFFE 21.20
PROP.SLOT DRAIN
TOP 20.00
PRO
P
.
1
8
"
H
D
P
E
20
20
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #3
OFF-SITE AREA
CONTRIBUTORY
TO EDDB EAST-1A
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #2 REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #1
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #4
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #5
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #1
OFF-SITE AREA
CONTRIBUTORY
TO EDDB EAST-1B
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #5
21
21
21
21
21
21
21
19
PROP.
SLOT DRAIN
TOP 20.55
20
20
20
PRO
P
.
1
8
"
H
D
P
E
PRO
P
.
1
8
"
H
D
P
E
PROP.
GI 48
19
21
21
21
22
2
2
21
LIMITS OF
DISTURBANCE33.58 ACRES
LIMITS OFDISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
PROP.GI 45E
PROP.
JB 45A
PR
O
P
.
1
2
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP.JB 58A
PROP. 14'
12" HDPE
PROP. 2'
FLUME W/NEENAH COVER
PROP.CB 41
PRO
P
.
4
2
"
H
D
P
E
PRO
P
.
4
2
"
H
D
P
E
20
21
21
20
20
20
20 20
19
19
20
PROP. 2'FLUME W/
NEENAH COVER
21 21
21
21 22
GPR CEMETERY BUFFER
FROM NEW SOUTH ASSOC.,
INC. (ARCHAEOLOGIST)
X
X
X
X
X
X
X
X
X
X
PROPOSED
NCDOT STDGUARDRAIL
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 15.0
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PRO
P
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PROP.
CB 72
PROP. 81.22'18" RCP @ 0.68%
PROP. FES
INV 18.10
PROP. FESINV 18.65
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROP. SECURITY FEN
C
E
X
X
X
X
X
PROP.
CB 42
13
14
14
13
13
14
15
15
14
13
FOREBAY
PROP. 10'
RIP-RAP
SPILLWAY
EL 14.0
PROP. 4' WIDE
1' TALL
BERM FOR
FLOW DIVERSION
16
15
14
16
15
14
PROP. 10'
RIP-RAP
SPILLWAY
EL 15.0
FOREBAY
16
.
5
16
PROP. 10'
RIP-RAPSPILLWAYEL 18.0
1716
18
15
.
5
15.5
18 17
FOREBAY
FOREBAY
FOREBAY
PROP. 10'
RIP-RAPSPILLWAYEL 17.5
PROP. 10'
RIP-RAPSPILLWAYEL 16.5
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
1" = 100'
Post-Development BUA &
Stormwater Runoff Plan
CS - 2
February 12, 2025
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARQ - ILM
0'100'200'300'
GRAPHIC SCALE
(IN FEET)
1 INCH = 100 FT
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
06/17/2025
Bart J. McClain
6-24
6-24
X
X
X X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X X X
X
X
W
W
W
W
W
W
W
W
W
CO
CO
RUN
W
A
Y
6
-
2
4
10
2
.
6
'
PROPOSED GATE #7DOUBLE AUTOMATIC
GATES FOR ENTRY& EXIT
20'
10
'
55
.
0
'
55
.
0
'
39
.
5
'
PROPOSED
HANGAR A
(120'x100')
12,000 sf
PROPOSED
HANGAR B
(120'x100')
12,000 sf
EDDB EAST-1A
CEMETERYACCESS
PROPOSED8' SECURITY
FENCE (TYP)
PROPOSED
HANGAR 1
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
24
.
8
'
25.4'
39
.
5
'
39
.
5
'
99
.
0
'
EDDB EAST-1C
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROPOSED
HANGAR 5
PROPOSED
HANGAR 4
PROPOSED
HANGAR 3
PROPOSED
HANGAR 2
PROPOSED
HANGAR E
(120'x100')
12,000 sf
HANGAR
(12,000 SF)
100
EDDB EAST-1B
PROPOSEDDUMPSTERSW/ SCREEN WALL
18
'
9'
BUILDING #1
X
X
T
A
X
I
W
A
Y
N
O
V
E
M
B
E
R
JET BLASTDEFLECTOR
8' HIGH
PROPOSED
RETAININGWALL
HANGAR D
OFFICE3,592 sf
PROPOSED
HANGAR C
(120'x100')
12,000 sf
PROPOSED
HANGAR D
(120'x100')
12,000 sf
PROPOSEDCHARGEPOINT 6000EV CHARGINGSTATION
SELF SERVE
FUEL STATIONAREA
11
0
.
0
'
79
.
0
'
79
.
0
'
3
5
.
0
'
158
.
0
'
ADGIII
39
.
5
'
ADGIIADGII
ADGI
ADGI
ADGI
ADGI
ADGI
ADGI
ADGIII
ADGIII
ADGII
PRO
P
E
O
C
(
1
'
O
U
T
S
I
D
E
P
7
7
L
I
N
E
)
PRO
P
E
O
C
110
.
0
'
79
.
0
'
58.
0
'
PROPOSEDDUMPSTERSW/ SCREEN WALL
X
X
X
X
X X X X X X X X X
PROPOSED
2-STORY
RETAIL (9,600 SF)
OFFICE (9,600 SF)
(19,200 SF TOTAL)
BUILDING #3
PROPOSED GATE #4AUTOMATIC GATESCANNER ENTRY ACCESS
& SENSOR EXIT
PROPOSED GATE #2
AUTOMATIC GATESCANNER ENTRY ACCESS &SENSOR EXITX
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROPOSED
GSE BLDG.
(89.33'x50.67')
4,525 sf
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
*
Analysis
Point #1
*Analysis
Point #2
*
Analysis
Point #3
*
Analysis
Point #5
*Analysis
Point #4
PROPOSED
CONCRETE
3" S9.5B
8" CABC
3" S9.5B
8" CABC
3" S9.5B
8" CABC
3" S9.5B
8" CABC
3" S9.5B
8" CABC
3" S9.5B
8" CABC
GRASSED
SWALE EAST-1A
FROM
EDDB EAST-1A
GRASSED
SWALE EAST-1B
FROM
EDDB EAST-1B
GRASSED
SWALE EASE-1C FROM
EDDB EAST-1C
PROPOSED
RETAININGWALL
PROPOSEDCHARGEPOINT 6000EV CHARGINGSTATION
PROPOSED
CONCRETE
PROPOSED
CONCRETE
PROPOSED
CONCRETE PROPOSED
CONCRETE
PROPOSED
CONCRETE
PROPOSED
FUEL STORAGE
TANKS
PROPOSED ACCESS
SCANNER W/ KEYPADWITHIN 2'x10'x6" RAISEDCONCRETE ISLAND
PROPOSED
FUEL PUMPCABINET
12.5'
X
X
X X X X X X
PROPOSED GATE #1AUTOMATIC GATESCANNER ENTRY ACCESS
& SENSOR EXIT
PROPOSED GATE #3MANUAL ENTRY
PROPOSED
GATE #6MANUALENTRY
X
X
X
PROPOSED
CONCRETE
6
9
.
0
'
1
0
5
.
0
'
PRO
P
E
O
C
JET BLASTDEFLECTOR8' HIGH
79.
0
'
PROP. 6" SOLID
YELLOW LINEW/ 6" BLACKOUTLINE
PROP. 6" SOLIDYELLOW LINEW/ 6" BLACK
OUTLINE
PROP. 12" SOLID
YELLOW LINEW/ 6" BLACK
OUTLINE
PROP. 12" SOLIDYELLOW LINE
W/ 6" BLACK
OUTLINE
PROP. 12" SOLIDYELLOW LINEW/ 6" BLACK
OUTLINE
PROP. NON-MOVEMENT
AREA MARKING6" SOLID YELLOW
3'x6" YELLOW DASHW/ 3' GAP W/ 6"BLACK OUTLINE
PROP. NON-MOVEMENT
AREA MARKING6" SOLID YELLOW
3'x6" YELLOW DASH
W/ 3' GAP W/ 6"BLACK OUTLINE
PROP. 6" SOLID
YELLOW LINEW/ 6" BLACK
OUTLINE
PROP. 6" SOLID
YELLOW LINEW/ 6" BLACKOUTLINE
PROP. 6" SOLIDYELLOW LINE
PROP. 6" SOLIDYELLOW LINE
PROP. 6" SOLIDYELLOW LINE
PROP. 6" SOLIDYELLOW LINE
PROP. 6" SOLID
YELLOW LINE
PROP. NON-MOVEMENTAREA MARKING
6" SOLID YELLOW3'x6" YELLOW DASH
W/ 3' GAP W/ 6"
BLACK OUTLINE
PROPOSED
GRASS AREA
PROPOSED
CONCRETE
PROPOSED
CONCRETE
PROPOSEDMANUAL
SLIDINGGATES
PROPOSED
FENCE
3
5
.
0
'
PROPOSED
GRASS AREA
PRO
P
E
O
C
TIE TO
EX. FENCE
PROPOSED
GRASS AREA
PROPOSED8' SECURITYFENCE (TYP)
PROPOSED
8' SECURITY
FENCE (TYP)
PROPOSED
8' SECURITYFENCE (TYP)
PROPOSED
8' SECURITYFENCE (TYP)
PROPOSED8' SECURITYFENCE (TYP)
PROPOSED
8' SECURITYFENCE (TYP)
PROPOSED8' SECURITYFENCE (TYP)
PROPOSED8' SECURITY
FENCE (TYP)
PROPOSED8' SECURITY
FENCE (TYP)
PROPOSED
8' SECURITYFENCE (TYP)
PRO
P
E
O
C
PRO
P
E
O
C
PRO
P
E
O
C
P
R
O
P
E
O
C
PROP. PATTERN C INTERMEDIATEHOLDING POSITION MARKING3'x1' YELLOW DASH W/ 6"
BLACK OUTLINE
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROPOSED
CONCRETE
30.0
'
PROP. 6" SOLIDYELLOW LINE
W/ 6" BLACK
OUTLINE
PROP. 6" SOLIDYELLOW LINE
W/ 6" BLACKOUTLINE
HANGAR E
OFFICE
3,592 sf
PROPOSED
HANGAR F
(120'x100')
12,000 sf HANGAR FOFFICE
PROPOSED
HANGAR G
(120'x100')
12,000 sf
7
9
.
0
'
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X X X X X X X X X X
X
X
X
X
X
X
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #3
OFF-SITE AREA
CONTRIBUTORY
TO EDDB EAST-1A
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #2 REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #1
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #4
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #5
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #1
OFF-SITE AREA
CONTRIBUTORY
TO EDDB EAST-1B
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #5
PROPOSEDHC PARKINGSIGNS (TYP)
PROPOSEDHC PARKINGSIGNS (TYP)
PROPOSED24" SPILLCURB (TYP)
PROPOSED6' CONCRETESIDEWALK(TYP)
PROPOSED24" SPILLCURB (TYP)
PROPOSED6' CONCRETESIDEWALK(TYP)
PROPOSED24" STD.CURB (TYP)
PROPOSED6' CONCRETESIDEWALK(TYP)
PROPOSED24" STD.CURB (TYP)
PROPOSED6' CONCRETESIDEWALK(TYP)
PROPOSED24" STD.CURB (TYP)
PROPOSED24" STD.CURB (TYP)PROPOSED4' CONCRETEFLUME
PROPOSED24" SPILLCURB (TYP)
PROPOSED24" SPILLCURB (TYP)PROPOSED24" SPILLCURB (TYP)
PROPOSED24" SPILLCURB (TYP)
PROPOSED24" SPILLCURB (TYP)
PROPOSED24" STD.CURB (TYP)
PROPOSED24" STD.CURB (TYP)
PROPOSED24" STD.CURB (TYP)
PROPOSED24" STD.CURB (TYP)
PROPOSED24" SPILLCURB (TYP)PROPOSED24" SPILLCURB (TYP)
PROPOSED24" SPILLCURB (TYP)
PROPOSED24" STD.CURB (TYP)
PROPOSED6' CONCRETESIDEWALK(TYP)
PROPOSED5' CONCRETESIDEWALK(TYP)
PROPOSED5' CONCRETESIDEWALK(TYP)
PROPOSED5' CONCRETESIDEWALK(TYP)
PROPOSED2' CONCRETEFLUME
PROPOSED2' CONCRETEFLUME
PROPOSED2' CONCRETEFLUME W/NEENAH SOLIDCOVER
PROPOSED2' CONCRETEFLUME W/NEENAH SOLIDCOVER
PROPOSEDSTOP BARAND SIGN
PROPOSEDSTOP BARAND SIGN
PROPOSEDSTOP BAR
PROPOSEDSTOP BAR
PROPOSEDSTOP BAR
PROPOSEDSTOP BARAND SIGN
PROPOSEDSTOP BARAND SIGN
PROPOSEDSTOP BARAND SIGN
PROP. 4" 4,500 PSICONCRETE REINFORCEDW/ #4 REBAR 12" O.C. EACHWAY ON 4" CABC
PROP. 4" 4,500 PSICONCRETE REINFORCEDW/ #4 REBAR 12" O.C. EACHWAY ON 4" CABC
25.0
'
25
.
0
'
37
.
0
'
TIE TOEX. PAVE
TIE TOEX. PAVE
PROP. PATTERN C INTERMEDIATE
HOLDING POSITION MARKING3'x1' YELLOW DASH W/ 6"BLACK OUTLINE
PROPOSED24" SPILLCURB (TYP)
PROPOSED3' CONCRETESIDEWALK(TYP)
PROPOSED5' CONCRETESIDEWALK(TYP)
BUILDING 1
OFFICES/SCHOOL14,300 SF
PROPOSED24" SPILLCURB (TYP)13
GPR CEMETERY BUFFER
FROM NEW SOUTH ASSOC.,
INC. (ARCHAEOLOGIST)
GPR CEMETERY BUFFER
FROM NEW SOUTH ASSOC.,
INC. (ARCHAEOLOGIST)
PROPOSED5' CONCRETESIDEWALK(TYP)
PROPOSEDHC PARKINGSIGNS (TYP)
30' R
30' R
20' R
20' R
30' R
30' R
20' R
20' R
95' R
120' R
200.5' R
225' R
200' R
225' R 45' R
70' R
PROPOSEDHC PARKINGSIGN (TYP)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
FOREBAY
FOREBAY
FOREBAY
FOREBAY
FOREBAY
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
1" = 100'
Post-Development
BUA Exhibit
CS - 2a
February 12, 2025
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARQ - ILM
0'100'200'300'
GRAPHIC SCALE
(IN FEET)
1 INCH = 100 FT
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
06/17/2025
Bart J. McClain
PROP.FES 40
6-24
6-24
X
X
X X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X
X
X X
X
X
X
X
X
X
X
X
X
X X
X X
W
W
W
W
W
W
W
W
W
FMO
CO
CO
X
X
X
X
X
X
X X X X X X X X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROP.JB 50
PROP.
JB 51
PROP.MH 41A
PROP.
GI 73
PROP.GI 71
PROP.
CB 70
PROP.
SLOT DRAIN
TOP 20.00
PROP.
JB 64
BUILDING #3
PROPOSED
2-STORY
FFE 19.25
PROPOSED
HANGAR D
FFE 21.00
PROPOSED
HANGAR C
FFE 21.00
PROPOSED
HANGAR B
FFE 21.00
PROPOSED
HANGAR A
FFE 21.00
PROP.
END 57
PROP.
JB 66
PROP.GI 65
PROP.JB 59
PROP.JB 58
PROP.
JB 44
PROP.
SLOT DRAIN
TOP 20.10
PROP.SLOT DRAINTOP VARIES
PROP.SLOT DRAIN
TOP 20.10
PROP.SLOT DRAIN
TOP 20.21
PROP.
JB 56
END PIPE20A
PROP. 30" HDPE
PROP. ADSSLOT DRAIN
TOP 22.00
PROP. ADSSLOT DRAIN
TOP 22.10
PROP.SLOT DRAIN
TOP VARIES
PROP.
JB 43
PROP.
JB 46
PROP.
SLOT DRAINTOP 20.21
PROP.
GI 30B
PROP.
FES 30A
PROP. FES 80INV 17.00
PROP. FES
INV 13.00
PROP. FESINV 11.70
PROP.GI 47
PROP. SWALE140 LF
PR
O
P
.
3
6
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PROP. 12" HDPE
PRO
P
.
1
5
"
H
D
P
E
PROP. 15" HDPE
PROP.GI 21
PROP.GI 23
PROP.
DI 34
PROP. RISER 37TOP 17.80
12" INV 15.0018" INV 12.74
PROP.
FES 1
PROP.RISER 1DTOP 16.50
12" INV 13.818" INV 13.8
PROP.GI 10
PROP.GI 11
PROP.GI 28
PROP.GI 27
PROP.
GI 2
PROP.
GI 24
PROP.MH 22
RUN
W
A
Y
6
-
2
4
20'
10
'
CEMETERYACCESS
PROPOSED
FENCE
PROPOSED
HANGAR 1
FFE 22.50
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROPOSED
HANGAR 5
FFE 22.50
T
A
X
I
W
A
Y
N
O
V
E
M
B
E
R
PROPOSED
RETAININGWALL
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
PROPOSED
HANGAR 4
FFE 22.50
PROPOSED
HANGAR 3
FFE 22.50
PROPOSED
HANGAR 2
FFE 22.50
PROPFENCE
EXISTING
GRASS
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
*
Analysis
Point #1
*Analysis
Point #2
*
Analysis
Point #3
*
Analysis
Point #5
*Analysis
Point #4
262 LF GRASSED
SWALE EAST-1A
FROM
EDDB EAST-1A
EDDB EAST-1A
162 LF GRASSED
SWALE EAST-1B
FROM
EDDB EAST-1B
EDDB EAST-1B
251 LF GRASSED
SWALE EAST-1C FROM
EDDB EAST-1C
EDDB EAST-1C
PROP. RISER 40BTOP 14.85
12" INV 12.00
18" INV 10.60
PROP.FES 1A
PROP.GI 1B
PROP. FES 31
INV 9.5
PROP.ST MH 36
PROP.
ST MH 35
PROP.
CB 33
PROP.ST MH 32
PROP. FES 81INV 17.50
PROP.CB 9
PROP.CB 8
PROP.MH 3
PRO
P
.
2
4
"
H
D
P
E
PROP.
MH 4
PR
O
P
.
2
4
"
H
D
P
E
PROP.
MH 5
PRO
P
.
2
4
"
H
D
P
E
PROP.MH 6
PR
O
P
.
1
8
"
H
D
P
E
PROP.MH 7
PR
O
P
.
1
5
"
H
D
P
E
PROP.GI 25
P
R
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
1
8
"
H
D
P
E
PROP. 15" HDPE
PROP.GI 29
PROP. 135.1
7
'
1
2
"
H
D
P
E
@
0
.
5
0
%
PROP.
15" HDPE
PROP. 77.00'18" HDPE@ 0.65%
PR
O
P
.
1
8
"
H
D
P
E
PROP.
18" RCP
PROP.18" HDPE
PRO
P
.
1
8
"
H
D
P
E
PROP.
24" HDPE
PROP. 84.56'
18" RCP @ 1.54%
PROP.
18" HDPE
PROP.12" HDPE
PROP.12" HDPE
PROP
.
4
2
"
H
D
P
E
PRO
P
.
3
6
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP
.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP
.
2
4
"
H
D
P
E
PROP
.
3
0
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PR
O
P
.
1
2
"
H
D
P
E
PROP. FES
INV 18.65
PROP. FESINV 18.10
PROP. 81.22'
18" RCP @ 0.68%
PROP. 12" HDPE
PROP. 12" HDPE
PROP. 22°
BEND
PROP. ADSSLOT DRAIN
TOP 22.00
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE22A
PROP. 45°BEND
PROP. ADS
SLOT DRAINTOP 21.95
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE
24A
PROP. 22°BEND
PROP. 90' SLOT DRAI
N
PROP. 90' SLOT DRA
I
N
PROP. 100' SLOT DRAIN
PROP. 90' SLOT DRAIN
PROP. 70' SLOT DRAIN
PROP. 80' SLOT DRA
I
N
PROP. 70' SLOT DRAIN
PROP. 70' SLOT DRAI
N
PROP. ADS
SLOT DRAINTOP 22.00
PROP. ADSSLOT DRAIN
TOP 21.95
PROP. ADSSLOT DRAIN
TOP 22.10
PROP. 60' SLOT DRAIN
PROP. 60' SLOT DR
A
I
N
PROP. 90' SLOT DRAI
N
PROP.
GI 26
PROP.
SLOT DRAINTOP 21.25
END PIPE
25C
5' GAP IN
SLOT DRAINPROP.
PROP.FES 1C
END PIPE4A
END PIPE5A
END PIPE6A
PROP.MH 20
PROP. FES 40AINV 10.30
PROP.
END 74
PROP.JB 45D
PROP.JB 45C
PROP.
JB 45B
PROP
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PRO
P
.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PROP.JB 58B
PROP. 6' GAP
NO SLOT DRAIN
PROP.
JB 45
PROP.
JB 25B
12" HDPE
PROP.
15" HDPE
PROP. 18" HDPE
PROP.
JB 25A
PROP.
VEL DISS
PROP.VEL DISS/
PROP.VEL DISS
21
22
21
21
21
21
21
21
18
12
11
10
10
'
T
O
P
E
L
E
V
1
6
.
0
3'
T
O
P
E
L
E
V
1
2
.
0
20
2020
20
20
17161514
18
10'
T
O
P
E
L
E
V
1
8
.
0
17 16151413
13 14
15 15
14
222120191817161514
22212019
22
22
22212019 21
22
22
21
20
21
20
22
22
22
22
2120
22
21
2221
20
20
20
19
17
18
19
20
12
20
20
20
20
20
20
20
19
18 17
16
15
1617
1819
20
1314
15
16
16
15
14
13
11
10
22
22
22
22
22
22
21
21
21
20
20
20
20
20
22
1817 161514
1716
15
2121201918 17 16
19
19
19
1
8
18
171819202122
22 22
21
12
11
10
1011
1212
11
10
13
1415
1617
1819
20
1314
15
1617
1819
20
20
19
18
15
1617
1819
20
14
9101112121110
9101112
13
14
13
1212111
0
22 22
22 22
22 22 22
22
2222
22
2222
22
22
22
22
22
23
23
23
23
23
23
23
2323
22
21
22
18
19
18
1716
21
22
22
22
22
22
21
21 21
2
2
22
22
22
22
22
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 12" HDPE
PROP. ADS
SLOT DRAINTOP 22.00PROP. 6' GAPNO SLOT DRAIN
ENDPIPE 2B
INV 19.50
ENDPIPE 2A
INV 18.50
X
X
X X X X X X
PROP.
18" RCP
PROP.18" RCP
PROP.18" RCP
PROP.18" RCP
X
X
X
20
PRO
P
.
2
4
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
22
22
22
22
22
22
22
PROP. 6"Wx12"H
CONC. CURBTOP 23.40
PROP.JB 61
PROP.SLOT DRAINTOP 19.71
PROP.
JB 67
PRO
P
.
1
8
"
H
D
P
E
PROP. 18" H
D
P
E
20
20
20
19
19
20
20
20
20
2
0
20
20
20
20
20
20
20
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
10'
T
O
P
E
L
E
V
2
0
.
0
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 17.0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X X X X X X X X X X
X
X
X
X
X
X
PROPOSED
GSE BLDG.
FFE 21.00
PROPOSED
HANGAR E
FFE 21.00
PROPOSED
HANGAR G
FFE 21.20
PROPOSED
HANGAR F
FFE 21.20
HANGAR
FFE 21.20
BUILDING #1
BUILDING 1OFFICES/SCHOOL
FFE 21.20
PROP.SLOT DRAINTOP 20.00
PROP.
1
8
"
H
D
P
E
20
20
21
21
21
21
21
21
21
19
PROP.SLOT DRAIN
TOP 20.55
20
20
20
PRO
P
.
1
8
"
H
D
P
E
PROP
.
1
8
"
H
D
P
E
PROP.GI 48
19
21
21
21
22
22
21
LIMITS OFDISTURBANCE
33.58 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OFDISTURBANCE
33.60 ACRES
LIMITS OFDISTURBANCE
33.60 ACRES
LIMITS OFDISTURBANCE
33.60 ACRES
PROP.
GI 45E
PROP.JB 45A
PR
O
P
.
1
2
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PROP
.
2
4
"
H
D
P
E
PROP.
JB 58A
PROP. 14'12" HDPE
PROP. 2'FLUME W/
NEENAH COVER
PROP.CB 41
PRO
P
.
4
2
"
H
D
P
E
PRO
P
.
4
2
"
H
D
P
E
20
21
21
20
20
20
20 20
19
19
20
PROP. 2'FLUME W/
NEENAH COVER
21 21 21
21 22
GPR CEMETERY BUFFER
FROM NEW SOUTH
ASSOC., INC.
(ARCHAEOLOGIST)
GPR CEMETERY BUFFER
FROM NEW SOUTH ASSOC.,
INC. (ARCHAEOLOGIST)
LIMITS OFDISTURBANCE
33.58 ACRES
X
X
X
X
X
X
X
X
X
X
PROPOSED
NCDOT STD
GUARDRAIL
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 15.0
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PROP.CB 72
PROP. 81.22'
18" RCP @ 0.68%
PROP. FESINV 18.10
PROP. FES
INV 18.65
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROP. SECURITY FENC
E
X
X
X
X
X
PROP.CB 42
13
14
14
1
3
13
14
15
15
14
13
FOREBAY
PROP. 10'
RIP-RAP
SPILLWAY
EL 14.0
PROP. 4' WIDE
1' TALL
BERM FOR
FLOW DIVERSION
16
15
14
16
15
14
PROP. 10'
RIP-RAP
SPILLWAY
EL 15.0
FOREBAY
16
.
5
16
PROP. 10'RIP-RAP
SPILLWAYEL 18.0
1716
18
15
.
5
15.5
1817
FOREBAY
FOREBAY
FOREBAY
PROP. 10'RIP-RAP
SPILLWAYEL 17.5
PROP. 10'
RIP-RAPSPILLWAYEL 16.5
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1A
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
1" = 100'
Post-Development EDDB
EAST-1A BUA & Stormwater
Runoff Plan
CS - 3
February 12, 2025
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARQ - ILM
0'100'200'300'
GRAPHIC SCALE
(IN FEET)
1 INCH = 100 FT
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
06/17/2025
Bart J. McClain
PROP.FES 40
6-24
6-24
X
X
X X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X
X
X X
X
X
X
X
X
X
X
X
X
X X
X
X
W
W
W
W
W
W
W
W
W
FMO
CO
CO
X
X
X
X
X
X
X X X X X X X X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROP.JB 50
PROP.JB 51
PROP.
MH 41A
PROP.GI 73
PROP.
GI 71
PROP.
CB 70
PROP.SLOT DRAINTOP 20.00
PROP.JB 64
BUILDING #3
PROPOSED
2-STORY
FFE 19.25
PROPOSED
HANGAR D
FFE 21.00
PROPOSED
HANGAR C
FFE 21.00
PROPOSED
HANGAR B
FFE 21.00
PROPOSED
HANGAR A
FFE 21.00
PROP.END 57
PROP.JB 66
PROP.
GI 65
PROP.
JB 59
PROP.JB 58
PROP.JB 44
PROP.
SLOT DRAINTOP 20.10
PROP.SLOT DRAIN
TOP VARIES
PROP.
SLOT DRAINTOP 20.10
PROP.
SLOT DRAINTOP 20.21
PROP.JB 56
END PIPE
20A
PROP. 30" HDPE
PROP. ADS
SLOT DRAINTOP 22.00
PROP. ADS
SLOT DRAINTOP 22.10
PROP.
SLOT DRAIN
TOP VARIES
PROP.
JB 43
PROP.JB 46
PROP.SLOT DRAINTOP 20.21
PROP.GI 30B
PROP.FES 30A
PROP. FES 80
INV 17.00
PROP. FES
INV 13.00
PROP. FES
INV 11.70
PROP.
GI 47
PROP. SWALE140 LF
PR
O
P
.
3
6
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PROP. 12" HDPE
PR
O
P
.
1
5
"
H
D
P
E
PROP. 15" HDPE
PROP.
GI 21
PROP.
GI 23
PROP.DI 34
PROP. RISER 37
TOP 17.80
12" INV 15.0018" INV 12.74
PROP.FES 1
PROP.RISER 1D
TOP 16.5012" INV 13.818" INV 13.8
PROP.GI 10
PROP.GI 11
PROP.GI 28
PROP.
GI 27
PROP.GI 2
PROP.
GI 24
PROP.
MH 22
RUN
W
A
Y
6
-
2
4
20'
10
'
CEMETERYACCESS
PROPOSEDFENCE
PROPOSED
HANGAR 1
FFE 22.50
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROPOSED
HANGAR 5
FFE 22.50
T
A
X
I
W
A
Y
N
O
V
E
M
B
E
R
PROPOSEDRETAININGWALL
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
PROPOSED
HANGAR 4
FFE 22.50
PROPOSED
HANGAR 3
FFE 22.50
PROPOSED
HANGAR 2
FFE 22.50
PROPFENCE
EXISTINGGRASS
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
*
Analysis
Point #1
*Analysis
Point #2
*
Analysis
Point #3
*
Analysis
Point #5
*Analysis
Point #4
262 LF GRASSED
SWALE EAST-1A
FROM
EDDB EAST-1A
EDDB EAST-1A
162 LF GRASSED
SWALE EAST-1B
FROM
EDDB EAST-1B
EDDB EAST-1B
251 LF GRASSED
SWALE EAST-1C FROM
EDDB EAST-1C
EDDB EAST-1C
PROP. RISER 40BTOP 14.85
12" INV 12.0018" INV 10.60
PROP.
FES 1A
PROP.
GI 1B
PROP. FES 31INV 9.5
PROP.ST MH 36
PROP.
ST MH 35
PROP.CB 33
PROP.ST MH 32
PROP. FES 81INV 17.50
PROP.
CB 9
PROP.
CB 8
PROP.
MH 3
PRO
P
.
2
4
"
H
D
P
E
PROP.
MH 4
PR
O
P
.
2
4
"
H
D
P
E
PROP.MH 5
PRO
P
.
2
4
"
H
D
P
E
PROP.
MH 6
PRO
P
.
1
8
"
H
D
P
E
PROP.
MH 7
PR
O
P
.
1
5
"
H
D
P
E
PROP.
GI 25
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
1
8
"
H
D
P
E
PROP. 15" HDPE
PROP.GI 29
PROP. 135.17'
1
2
"
H
D
P
E
@
0
.
5
0
%
PROP.
15" HDPE
PROP. 77.00'18" HDPE
@ 0.65%
PR
O
P
.
1
8
"
H
D
P
E
PROP.18" RCP
PROP.18" HDPE
PRO
P
.
1
8
"
H
D
P
E
PROP.
24" HDPE
PROP. 84.56'
18" RCP @ 1.54%
PROP.18" HDPE
PROP.
12" HDPE
PROP.12" HDPE
PROP
.
4
2
"
H
D
P
E
PRO
P
.
3
6
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP.
2
4
"
H
D
P
E
PRO
P
.
3
0
"
H
D
P
E
PROP
.
2
4
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PROP. FESINV 18.65
PROP. FES
INV 18.10
PROP. 81.22'18" RCP @ 0.68%
PROP. 12" HDPE
PROP. 12" HDPE
PROP. 22°BEND
PROP. ADS
SLOT DRAINTOP 22.00
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE
22A
PROP. 45°BEND
PROP. ADSSLOT DRAIN
TOP 21.95
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE24A
PROP. 22°
BEND
PROP. 90' SLOT DRA
I
N
PROP. 90' SLOT DR
A
I
N
PROP. 100' SLOT DR
A
I
N
PROP. 90' SLOT DRA
I
N
PROP. 70' SLOT DRA
I
N
PROP. 80' SLOT DR
A
I
N
PROP. 70' SLOT DRA
I
N
PROP. 70' SLOT DRA
I
N
PROP. ADSSLOT DRAIN
TOP 22.00
PROP. ADS
SLOT DRAINTOP 21.95
PROP. ADSSLOT DRAIN
TOP 22.10
PROP. 60' SLOT DRAI
N
PROP. 60' SLOT DRAIN
PROP. 90' SLOT DR
A
I
N
PROP.GI 26
PROP.SLOT DRAIN
TOP 21.25
END PIPE25C
5' GAP IN
SLOT DRAINPROP.
PROP.
FES 1C
END PIPE4A
END PIPE
5A
END PIPE
6A
PROP.MH 20
PROP. FES 40A
INV 10.30
PROP.END 74
PROP.JB 45D
PROP.JB 45C
PROP.JB 45B
PROP.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PROP
.
1
2
"
H
D
P
E
PRO
P
.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PROP.JB 58B
PROP. 6' GAPNO SLOT DRAIN
PROP.
JB 45
PROP.JB 25B
12" HDPE
PROP.
15" HDPE
PROP. 18" HDPE
PROP.JB 25A
PROP.VEL DISS
PROP.
VEL DISS/
PROP.
VEL DISS
21
22
21
21
21
21
21
21
18
12
11
10
10
'
T
O
P
E
L
E
V
1
6
.
0
3'
T
O
P
E
L
E
V
1
2
.
0
20
2020
20
20
17161514
18
10'
T
O
P
E
L
E
V
1
8
.
0
17 16151413
1314151514
222120191817161514
22212019
22
22
22212019 21
22
22
21
20
21
20
22
22
22
22
2120
22
21
22 21
20
20
20
19
17
18
19
20
12
20
20
20
20
20
20
20
19
18 17
16
151617
1819
20
1314
15
16
16
15
14
13
11
10
22
22
22
22
22
22
21
21
21
20
20
20
20
20
22
1817 161514
1716
15
2121201918 17 16
19
19
19
18
18
171819202122
22 22
21
12
11
10
10
11
1212
11
10
13
1415
1617
1819
20
131415
1617
1819
20
20
19
18
15
1617
1819
20
14
9101112121110
9101112
13
1413
1
2121110
22 22
22 22
22 22 22
22
2222
22
2222
22
22
22
22
22
23
23
23
23
23
23
23
2323
22
21
22
18
19
18
1716
21
22
22
22
22
22
21
21 21
22
22
22
22
22
22
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 12" HDPE
PROP. ADSSLOT DRAIN
TOP 22.00PROP. 6' GAP
NO SLOT DRAIN
END
PIPE 2BINV 19.50
END
PIPE 2AINV 18.50
X
X
X X X X X X
PROP.
18" RCP
PROP.
18" RCP
PROP.18" RCP
PROP.
18" RCP
X
X
X
20
PRO
P
.
2
4
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
22
22
22
22
22
22
22
PROP. 6"Wx12"HCONC. CURB
TOP 23.40
PROP.JB 61
PROP.SLOT DRAIN
TOP 19.71
PROP.JB 67
PROP
.
1
8
"
H
D
P
E
PROP. 18"
H
D
P
E
20
20
20
19
19
20
20
20
20
20
20
20
20
20
20
20
20
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
10'
T
O
P
E
L
E
V
2
0
.
0
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 17.0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X X X X X X X X X X
X
X
X
X
X
X
PROPOSED
GSE BLDG.
FFE 21.00
PROPOSED
HANGAR E
FFE 21.00
PROPOSED
HANGAR G
FFE 21.20
PROPOSED
HANGAR F
FFE 21.20
HANGAR
FFE 21.20
BUILDING #1
BUILDING 1OFFICES/SCHOOLFFE 21.20
PROP.SLOT DRAIN
TOP 20.00
PRO
P
.
1
8
"
H
D
P
E
20
20
21
21
21
21
21
21
21
19
PROP.
SLOT DRAIN
TOP 20.55
20
20
20
PRO
P
.
1
8
"
H
D
P
E
PRO
P
.
1
8
"
H
D
P
E
PROP.
GI 48
19
21
21
21
22
2
2
21
LIMITS OF
DISTURBANCE33.58 ACRES
LIMITS OFDISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
PROP.GI 45E
PROP.
JB 45A
PR
O
P
.
1
2
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP.JB 58A
PROP. 14'
12" HDPE
PROP. 2'
FLUME W/NEENAH COVER
PROP.CB 41
PRO
P
.
4
2
"
H
D
P
E
PRO
P
.
4
2
"
H
D
P
E
20
21
21
20
20
20
20 20
19
19
20
PROP. 2'FLUME W/
NEENAH COVER
21 21
21
21 22
GPR CEMETERY BUFFER
FROM NEW SOUTH ASSOC.,
INC. (ARCHAEOLOGIST)
X
X
X
X
X
X
X
X
X
X
PROPOSED
NCDOT STDGUARDRAIL
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 15.0
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PRO
P
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PROP.
CB 72
PROP. 81.22'18" RCP @ 0.68%
PROP. FES
INV 18.10
PROP. FESINV 18.65
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROP. SECURITY FEN
C
E
X
X
X
X
X
PROP.
CB 42
13
14
14
13
13
14
15
15
14
13
FOREBAY
PROP. 10'
RIP-RAP
SPILLWAY
EL 14.0
PROP. 4' WIDE
1' TALL
BERM FOR
FLOW DIVERSION
16
15
14
16
15
14
PROP. 10'
RIP-RAP
SPILLWAY
EL 15.0
FOREBAY
16
.
5
16
PROP. 10'
RIP-RAPSPILLWAYEL 18.0
1716
18
15
.
5
15.5
18 17
FOREBAY
FOREBAY
FOREBAY
PROP. 10'
RIP-RAPSPILLWAYEL 17.5
PROP. 10'
RIP-RAPSPILLWAY
EL 16.5
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1A
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
1" = 100'
Post-Development EDDB
EAST-1B BUA & Stormwater
Runoff Plan
CS - 4
February 12, 2025
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARQ - ILM
0'100'200'300'
GRAPHIC SCALE
(IN FEET)
1 INCH = 100 FT
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
Bart J. McClain
06/17/2025
PROP.FES 40
6-24
6-24
X
X
X X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X
X
X X
X
X
X
X
X
X
X
X
X
X X
X
X
W
W
W
W
W
W
W
W
W
FMO
CO
CO
X
X
X
X
X
X
X X X X X X X X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROP.JB 50
PROP.JB 51
PROP.
MH 41A
PROP.GI 73
PROP.
GI 71
PROP.
CB 70
PROP.SLOT DRAINTOP 20.00
PROP.JB 64
BUILDING #3
PROPOSED
2-STORY
FFE 19.25
PROPOSED
HANGAR D
FFE 21.00
PROPOSED
HANGAR C
FFE 21.00
PROPOSED
HANGAR B
FFE 21.00
PROPOSED
HANGAR A
FFE 21.00
PROP.END 57
PROP.JB 66
PROP.
GI 65
PROP.
JB 59
PROP.JB 58
PROP.JB 44
PROP.
SLOT DRAINTOP 20.10
PROP.SLOT DRAIN
TOP VARIES
PROP.
SLOT DRAINTOP 20.10
PROP.
SLOT DRAINTOP 20.21
PROP.JB 56
END PIPE
20A
PROP. 30" HDPE
PROP. ADS
SLOT DRAINTOP 22.00
PROP. ADS
SLOT DRAINTOP 22.10
PROP.
SLOT DRAIN
TOP VARIES
PROP.
JB 43
PROP.JB 46
PROP.SLOT DRAINTOP 20.21
PROP.GI 30B
PROP.FES 30A
PROP. FES 80
INV 17.00
PROP. FES
INV 13.00
PROP. FES
INV 11.70
PROP.
GI 47
PROP. SWALE140 LF
PR
O
P
.
3
6
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PROP. 12" HDPE
PR
O
P
.
1
5
"
H
D
P
E
PROP. 15" HDPE
PROP.
GI 21
PROP.
GI 23
PROP.DI 34
PROP. RISER 37
TOP 17.80
12" INV 15.0018" INV 12.74
PROP.FES 1
PROP.RISER 1D
TOP 16.5012" INV 13.818" INV 13.8
PROP.GI 10
PROP.GI 11
PROP.GI 28
PROP.
GI 27
PROP.GI 2
PROP.
GI 24
PROP.
MH 22
RUN
W
A
Y
6
-
2
4
20'
10
'
CEMETERYACCESS
PROPOSEDFENCE
PROPOSED
HANGAR 1
FFE 22.50
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROPOSED
HANGAR 5
FFE 22.50
T
A
X
I
W
A
Y
N
O
V
E
M
B
E
R
PROPOSEDRETAININGWALL
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
PROPOSED
HANGAR 4
FFE 22.50
PROPOSED
HANGAR 3
FFE 22.50
PROPOSED
HANGAR 2
FFE 22.50
PROPFENCE
EXISTINGGRASS
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
*
Analysis
Point #1
*Analysis
Point #2
*
Analysis
Point #3
*
Analysis
Point #5
*Analysis
Point #4
262 LF GRASSED
SWALE EAST-1A
FROM
EDDB EAST-1A
EDDB EAST-1A
162 LF GRASSED
SWALE EAST-1B
FROM
EDDB EAST-1B
EDDB EAST-1B
251 LF GRASSED
SWALE EAST-1C FROM
EDDB EAST-1C
EDDB EAST-1C
PROP. RISER 40BTOP 14.85
12" INV 12.0018" INV 10.60
PROP.
FES 1A
PROP.
GI 1B
PROP. FES 31INV 9.5
PROP.ST MH 36
PROP.
ST MH 35
PROP.CB 33
PROP.ST MH 32
PROP. FES 81INV 17.50
PROP.
CB 9
PROP.
CB 8
PROP.
MH 3
PRO
P
.
2
4
"
H
D
P
E
PROP.
MH 4
PR
O
P
.
2
4
"
H
D
P
E
PROP.MH 5
PRO
P
.
2
4
"
H
D
P
E
PROP.
MH 6
PRO
P
.
1
8
"
H
D
P
E
PROP.
MH 7
PR
O
P
.
1
5
"
H
D
P
E
PROP.
GI 25
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
1
8
"
H
D
P
E
PROP. 15" HDPE
PROP.GI 29
PROP. 135.17'
1
2
"
H
D
P
E
@
0
.
5
0
%
PROP.
15" HDPE
PROP. 77.00'18" HDPE
@ 0.65%
PR
O
P
.
1
8
"
H
D
P
E
PROP.18" RCP
PROP.18" HDPE
PRO
P
.
1
8
"
H
D
P
E
PROP.
24" HDPE
PROP. 84.56'
18" RCP @ 1.54%
PROP.18" HDPE
PROP.
12" HDPE
PROP.12" HDPE
PROP
.
4
2
"
H
D
P
E
PRO
P
.
3
6
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP.
2
4
"
H
D
P
E
PRO
P
.
3
0
"
H
D
P
E
PROP
.
2
4
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PROP. FESINV 18.65
PROP. FES
INV 18.10
PROP. 81.22'18" RCP @ 0.68%
PROP. 12" HDPE
PROP. 12" HDPE
PROP. 22°BEND
PROP. ADS
SLOT DRAINTOP 22.00
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE
22A
PROP. 45°BEND
PROP. ADSSLOT DRAIN
TOP 21.95
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE24A
PROP. 22°
BEND
PROP. 90' SLOT DRA
I
N
PROP. 90' SLOT DR
A
I
N
PROP. 100' SLOT DR
A
I
N
PROP. 90' SLOT DRA
I
N
PROP. 70' SLOT DRA
I
N
PROP. 80' SLOT DR
A
I
N
PROP. 70' SLOT DRA
I
N
PROP. 70' SLOT DRA
I
N
PROP. ADSSLOT DRAIN
TOP 22.00
PROP. ADS
SLOT DRAINTOP 21.95
PROP. ADSSLOT DRAIN
TOP 22.10
PROP. 60' SLOT DRAI
N
PROP. 60' SLOT DRAIN
PROP. 90' SLOT DR
A
I
N
PROP.GI 26
PROP.SLOT DRAIN
TOP 21.25
END PIPE25C
5' GAP IN
SLOT DRAINPROP.
PROP.
FES 1C
END PIPE4A
END PIPE
5A
END PIPE
6A
PROP.MH 20
PROP. FES 40A
INV 10.30
PROP.END 74
PROP.JB 45D
PROP.JB 45C
PROP.JB 45B
PROP.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PROP
.
1
2
"
H
D
P
E
PRO
P
.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PROP.JB 58B
PROP. 6' GAPNO SLOT DRAIN
PROP.
JB 45
PROP.JB 25B
12" HDPE
PROP.
15" HDPE
PROP. 18" HDPE
PROP.JB 25A
PROP.VEL DISS
PROP.
VEL DISS/
PROP.
VEL DISS
21
22
21
21
21
21
21
21
18
12
11
10
10
'
T
O
P
E
L
E
V
1
6
.
0
3'
T
O
P
E
L
E
V
1
2
.
0
20
2020
20
20
17161514
18
10'
T
O
P
E
L
E
V
1
8
.
0
17 16151413
1314151514
222120191817161514
22212019
22
22
22212019 21
22
22
21
20
21
20
22
22
22
22
2120
22
21
22 21
20
20
20
19
17
18
19
20
12
20
20
20
20
20
20
20
19
18 17
16
151617
1819
20
1314
15
16
16
15
14
13
11
10
22
22
22
22
22
22
21
21
21
20
20
20
20
20
22
1817 161514
1716
15
2121201918 17 16
19
19
19
18
18
171819202122
22 22
21
12
11
10
10
11
1212
11
10
13
1415
1617
1819
20
131415
1617
1819
20
20
19
18
15
1617
1819
20
14
9101112121110
9101112
13
1413
1
2121110
22 22
22 22
22 22 22
22
2222
22
2222
22
22
22
22
22
23
23
23
23
23
23
23
2323
22
21
22
18
19
18
1716
21
22
22
22
22
22
21
21 21
22
22
22
22
22
22
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 12" HDPE
PROP. ADSSLOT DRAIN
TOP 22.00PROP. 6' GAP
NO SLOT DRAIN
END
PIPE 2BINV 19.50
END
PIPE 2AINV 18.50
X
X
X X X X X X
PROP.
18" RCP
PROP.
18" RCP
PROP.18" RCP
PROP.
18" RCP
X
X
X
20
PRO
P
.
2
4
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
22
22
22
22
22
22
22
PROP. 6"Wx12"HCONC. CURB
TOP 23.40
PROP.JB 61
PROP.SLOT DRAIN
TOP 19.71
PROP.JB 67
PROP
.
1
8
"
H
D
P
E
PROP. 18"
H
D
P
E
20
20
20
19
19
20
20
20
20
20
20
20
20
20
20
20
20
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
10'
T
O
P
E
L
E
V
2
0
.
0
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 17.0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X X X X X X X X X X
X
X
X
X
X
X
PROPOSED
GSE BLDG.
FFE 21.00
PROPOSED
HANGAR E
FFE 21.00
PROPOSED
HANGAR G
FFE 21.20
PROPOSED
HANGAR F
FFE 21.20
HANGAR
FFE 21.20
BUILDING #1
BUILDING 1OFFICES/SCHOOLFFE 21.20
PROP.SLOT DRAIN
TOP 20.00
PRO
P
.
1
8
"
H
D
P
E
20
20
21
21
21
21
21
21
21
19
PROP.
SLOT DRAIN
TOP 20.55
20
20
20
PRO
P
.
1
8
"
H
D
P
E
PRO
P
.
1
8
"
H
D
P
E
PROP.
GI 48
19
21
21
21
22
2
2
21
LIMITS OF
DISTURBANCE33.58 ACRES
LIMITS OFDISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
PROP.GI 45E
PROP.
JB 45A
PR
O
P
.
1
2
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP.JB 58A
PROP. 14'
12" HDPE
PROP. 2'
FLUME W/NEENAH COVER
PROP.CB 41
PRO
P
.
4
2
"
H
D
P
E
PRO
P
.
4
2
"
H
D
P
E
20
21
21
20
20
20
20 20
19
19
20
PROP. 2'FLUME W/
NEENAH COVER
21 21
21
21 22
GPR CEMETERY BUFFER
FROM NEW SOUTH ASSOC.,
INC. (ARCHAEOLOGIST)
X
X
X
X
X
X
X
X
X
X
PROPOSED
NCDOT STDGUARDRAIL
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 15.0
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PRO
P
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PROP.
CB 72
PROP. 81.22'18" RCP @ 0.68%
PROP. FES
INV 18.10
PROP. FESINV 18.65
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROP. SECURITY FEN
C
E
X
X
X
X
X
PROP.
CB 42
13
14
14
13
13
14
15
15
14
13
FOREBAY
PROP. 10'
RIP-RAP
SPILLWAY
EL 14.0
PROP. 4' WIDE
1' TALL
BERM FOR
FLOW DIVERSION
16
15
14
16
15
14
PROP. 10'
RIP-RAP
SPILLWAY
EL 15.0
FOREBAY
16
.
5
16
PROP. 10'
RIP-RAPSPILLWAYEL 18.0
1716
18
15
.
5
15.5
18 17
FOREBAY
FOREBAY
FOREBAY
PROP. 10'
RIP-RAPSPILLWAYEL 17.5
PROP. 10'
RIP-RAPSPILLWAY
EL 16.5
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1A
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
1" = 100'
Post-Development EDDB
EAST-1C BUA & Stormwater
Runoff Plan
CS - 5
February 12, 2025
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARQ - ILM
0'100'200'300'
GRAPHIC SCALE
(IN FEET)
1 INCH = 100 FT
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
Bart J. McClain
06/17/2025
PROP.FES 40
6-24
6-24
X
X
X X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
W
W
W
W
W
W
W
W
W
FMO
CO
CO
X
X
X
X
X
X
X
PROP.JB 50
PROP.
JB 51
PROP.MH 41A
PROP.
GI 73
PROP.
GI 71
PROP.
CB 70
PROP.
SLOT DRAINTOP 20.00
PROP.JB 64
BUILDING #3
PROPOSED
2-STORY
FFE 19.25
PROPOSED
HANGAR D
FFE 21.00
PROPOSED
HANGAR C
FFE 21.00
PROPOSED
HANGAR B
FFE 21.00
PROPOSED
HANGAR A
FFE 21.00
PROP.
END 57
PROP.
JB 66
PROP.GI 65
PROP.JB 59
PROP.JB 58
PROP.
JB 44
PROP.
SLOT DRAINTOP 20.10
PROP.SLOT DRAINTOP VARIES
PROP.SLOT DRAIN
TOP 20.10
PROP.SLOT DRAIN
TOP 20.21
PROP.JB 56
END PIPE20A
PROP. 30" HDPE
PROP. ADSSLOT DRAIN
TOP 22.00
PROP. ADSSLOT DRAIN
TOP 22.10
PROP.SLOT DRAIN
TOP VARIES
PROP.
JB 43
PROP.
JB 46
PROP.
SLOT DRAINTOP 20.21
PROP.
GI 30B
PROP.
FES 30A
PROP. FES 80INV 17.00
PROP. FES
INV 13.00
PROP. FESINV 11.70
PROP.GI 47
PROP. SWALE140 LF
PR
O
P
.
3
6
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
3
0
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
2
4
"
H
D
P
E
PROP. 12" HDPE
PRO
P
.
1
5
"
H
D
P
E
PROP. 15" HDPE
PROP.GI 21
PROP.GI 23
PROP.
DI 34
PROP. RISER 37TOP 17.80
12" INV 15.0018" INV 12.74
PROP.
FES 1
PROP.RISER 1DTOP 16.50
12" INV 13.818" INV 13.8
PROP.GI 10
PROP.GI 11
PROP.GI 28
PROP.
GI 27
PROP.GI 2
PROP.
GI 24
PROP.MH 22
RUN
W
A
Y
6
-
2
4
20'
10
'
CEMETERYACCESS
PROPOSED
FENCE
PROPOSED
HANGAR 1
FFE 22.50
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROPOSED
HANGAR 5
FFE 22.50
T
A
X
I
W
A
Y
N
O
V
E
M
B
E
R
PROPOSED
RETAININGWALL
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
PROPOSED
HANGAR 4
FFE 22.50
PROPOSED
HANGAR 3
FFE 22.50
PROPOSED
HANGAR 2
FFE 22.50
PROPFENCE
EXISTING
GRASS
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
PROJECT AREA
36.20 ACRES
*
Analysis
Point #1
*Analysis
Point #2
*
Analysis
Point #3
*
Analysis
Point #5
*Analysis
Point #4
262 LF GRASSED
SWALE EAST-1A
FROM
EDDB EAST-1A
EDDB EAST-1A
162 LF GRASSED
SWALE EAST-1B
FROM
EDDB EAST-1B
EDDB EAST-1B
251 LF GRASSED
SWALE EAST-1C FROM
EDDB EAST-1C
EDDB EAST-1C
PROP. RISER 40BTOP 14.8512" INV 12.00
18" INV 10.60
PROP.FES 1A
PROP.
GI 1B
PROP. FES 31
INV 9.5
PROP.ST MH 36
PROP.
ST MH 35
PROP.
CB 33
PROP.ST MH 32
PROP. FES 81INV 17.50
PROP.CB 9
PROP.CB 8
PROP.MH 3
PRO
P
.
2
4
"
H
D
P
E
PROP.
MH 4
PR
O
P
.
2
4
"
H
D
P
E
PROP.MH 5
PRO
P
.
2
4
"
H
D
P
E
PROP.MH 6
PR
O
P
.
1
8
"
H
D
P
E
PROP.MH 7
PR
O
P
.
1
5
"
H
D
P
E
PROP.
GI 25
P
R
O
P
.
2
4
"
H
D
P
E
PR
O
P
.
1
8
"
H
D
P
E
PROP. 15" HDPE
PROP.GI 29
PROP. 135.17
'
1
2
"
H
D
P
E
@
0
.
5
0
%
PROP.
15" HDPE
PROP. 77.00'18" HDPE@ 0.65%
PR
O
P
.
1
8
"
H
D
P
E
PROP.18" RCP
PROP.18" HDPE
PRO
P
.
1
8
"
H
D
P
E
PROP.
24" HDPE
PROP. 84.56'
18" RCP @ 1.54%
PROP.18" HDPE
PROP.12" HDPE
PROP.12" HDPE
PROP
.
4
2
"
H
D
P
E
PR
O
P
.
3
6
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP
.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PROP
.
2
4
"
H
D
P
E
PROP
.
3
0
"
H
D
P
E
PRO
P
.
2
4
"
H
D
P
E
PR
O
P
.
1
2
"
H
D
P
E
PROP. FES
INV 18.65
PROP. FES
INV 18.10
PROP. 81.22'
18" RCP @ 0.68%
PROP. 12" HDPE
PROP. 12" HDPE
PROP. 22°
BEND
PROP. ADSSLOT DRAIN
TOP 22.00
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE22A
PROP. 45°BEND
PROP. ADSSLOT DRAINTOP 21.95
PROP. 12" HDPE
PROP. 12" HDPE
END PIPE
24A
PROP. 22°
BEND
PROP. 90' SLOT DRA
I
N
PROP. 90' SLOT DRA
I
N
PROP. 100' SLOT DRAI
N
PROP. 90' SLOT DRAIN
PROP. 70' SLOT DRAIN
PROP. 80' SLOT DRA
I
N
PROP. 70' SLOT DRAIN
PROP. 70' SLOT DRA
I
N
PROP. ADSSLOT DRAINTOP 22.00
PROP. ADS
SLOT DRAIN
TOP 21.95
PROP. ADSSLOT DRAIN
TOP 22.10
PROP. 60' SLOT DRAIN
PROP. 60' SLOT DR
A
I
N
PROP. 90' SLOT DRAI
N
PROP.
GI 26
PROP.SLOT DRAINTOP 21.25
END PIPE
25C
5' GAP IN
SLOT DRAINPROP.
PROP.FES 1C
END PIPE4A
END PIPE5A
END PIPE6A
PROP.MH 20
PROP. FES 40AINV 10.30
PROP.
END 74
PROP.JB 45D
PROP.JB 45C
PROP.JB 45B
PROP
.
1
8
"
H
D
P
E
PRO
P
.
1
5
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PRO
P
.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PROP.JB 58B
PROP. 6' GAP
NO SLOT DRAIN
PROP.
JB 45
PROP.
JB 25B
12" HDPE
PROP.
15" HDPE
PROP. 18" HDPE
PROP.
JB 25A
PROP.
VEL DISS
PROP.VEL DISS/
PROP.VEL DISS
21
22
21
21
21
21
21
21
18
12
11
10
10
'
T
O
P
E
L
E
V
1
6
.
0
3'
T
O
P
E
L
E
V
1
2
.
0
20
2020
20
20
17161514
18
10'
T
O
P
E
L
E
V
1
8
.
0
17 16151413
13 14151514
222120191817161514
22212019
22
22
22212019 21
22
22
21
20
21
20
22
22
22
22
2120
22
21
2221
20
20
20
19
17
18
19
20
12
20
20
20
20
20
20
20
19
18 17
16
15
1617
1819
20
1314
15
16
16
15
14
13
11
10
22
22
22
22
22
22
21
21
21
20
20
20
20
20
22
1817 161514
1716
15
2121201918 17 16
19
19
19
1
8
18
171819202122
22 22
21
12
11
10
1011
1212
11
10
13
1415
1617
1819
20
1314
15
1617
1819
20
20
19
18
15
1617
1819
20
14
9101112121110
9101112
13
14
13
1212111
0
22 22
22 22
22 22 22
22
2222
22
2222
22
22
2222
22
23
23
23
23
23
23
232323
22
21
22
18
19
18
1716
21
22
22
22
22
22
21
21 21
22
22
22
22
22
22
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 6' GAP
NO SLOT DRAIN
PROP. 6' GAPNO SLOT DRAIN
PROP. 12" HDPE
PROP. ADS
SLOT DRAINTOP 22.00PROP. 6' GAPNO SLOT DRAIN
ENDPIPE 2B
INV 19.50
ENDPIPE 2A
INV 18.50
PROP.
18" RCP
PROP.18" RCP
PROP.18" RCP
PROP.18" RCP
20
PRO
P
.
2
4
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
22
22
22
22
22
22
22
PROP. 6"Wx12"HCONC. CURBTOP 23.40
PROP.JB 61
PROP.SLOT DRAINTOP 19.71
PROP.JB 67
PRO
P
.
1
8
"
H
D
P
E
PROP. 18" H
D
P
E
20
20
20
19
19
20
20
20
20
2
0
20
20
20
20
20
20
20
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PROP. RAILROAD
TIE CHECK DAM
(TYP)
10'
T
O
P
E
L
E
V
2
0
.
0
PROP. 10'
EMERGENCY
SPILLWAY
ELEV 17.0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PROPOSED
GSE BLDG.
FFE 21.00
PROPOSED
HANGAR E
FFE 21.00
PROPOSED
HANGAR G
FFE 21.20
PROPOSED
HANGAR F
FFE 21.20
HANGAR
FFE 21.20
BUILDING #1
BUILDING 1OFFICES/SCHOOL
FFE 21.20
PROP.SLOT DRAINTOP 20.00
PRO
P
.
1
8
"
H
D
P
E
20
20
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #3
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #2 REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #1
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #4
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #5
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #1
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1B
REMAINING AREA
CONTRIBUTORY TO
ANALYSIS PT. #5
21
21
21
21
21
21
21
19
PROP.SLOT DRAIN
TOP 20.55
20
20
20
PRO
P
.
1
8
"
H
D
P
E
PROP.
1
8
"
H
D
P
E
PROP.
GI 48
19
21
21
21
22
22
21
LIMITS OFDISTURBANCE
33.58 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE33.60 ACRES
LIMITS OF
DISTURBANCE
33.60 ACRES
LIMITS OFDISTURBANCE
33.60 ACRES
LIMITS OFDISTURBANCE
33.60 ACRES
PROP.
GI 45E
PROP.JB 45A
PR
O
P
.
1
2
"
H
D
P
E
PRO
P
.
1
2
"
H
D
P
E
PROP
.
2
4
"
H
D
P
E
PROP.
JB 58A
PROP. 14'12" HDPE
PROP. 2'FLUME W/
NEENAH COVER
PROP.CB 41
PRO
P
.
4
2
"
H
D
P
E
PRO
P
.
4
2
"
H
D
P
E
20
21
21
20
20
20
20 20
19
19
20
PROP. 2'FLUME W/NEENAH COVER
21 21 21
21 22
GPR CEMETERY BUFFER
FROM NEW SOUTH
ASSOC., INC.
(ARCHAEOLOGIST)
GPR CEMETERY BUFFER
FROM NEW SOUTH ASSOC.,
INC. (ARCHAEOLOGIST)
LIMITS OFDISTURBANCE
33.58 ACRES
PROPOSED
NCDOT STDGUARDRAIL
PROP. 10'
EMERGENCY
SPILLWAYELEV 15.0
PROP. RAILROAD
TIE CHECK DAM
(TYP)
PRO
P
.
1
8
"
H
D
P
E
PROP
.
1
5
"
H
D
P
E
PROP.
CB 72
PROP. 81.22'
18" RCP @ 0.68%
PROP. FES
INV 18.10
PROP. FES
INV 18.65
(1
0
0
'
P
U
B
L
I
C
R
/
W
)
N.
K
E
R
R
A
V
E
N
U
E
-
S
R
1
1
7
5
PROP. SECURITY FENC
E
PROP.
CB 42
13
14
14
13
13
14
15
1
5
14
13
FOREBAY
PROP. 10'
RIP-RAP
SPILLWAY
EL 14.0
PROP. 4' WIDE
1' TALL
BERM FOR
FLOW DIVERSION
16
15
14
16
15
14
PROP. 10'
RIP-RAP
SPILLWAY
EL 15.0
FOREBAY
16
.
5
16
PROP. 10'RIP-RAP
SPILLWAYEL 18.0
1716
18
15
.
5
15.5
1817
FOREBAY
FOREBAY
FOREBAY
PROP. 10'RIP-RAP
SPILLWAYEL 17.5
PROP. 10'
RIP-RAPSPILLWAYEL 16.5
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1A
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
AREA OUTSIDE
PROJECT AREA
CONTRIBUTORY
TO EDDB EAST-1C
1150 SE MAYNARD ROAD
SUITE 260
CARY, NC 27511
(919) 467-9708
C-0329
Contact the North Carolina One Call Center
prior to doing any digging. (1-800-632-4949)
1" = 100'
Post-Development
Remaining Area BUA &
Stormwater Runoff Plan
CS - 6
February 12, 2025
DEVELOPER:
OWNER:
Wilmington International Airport
1740 Airport Blvd. - Suite 12
Wilmington, NC 28405
910-341-4333 ext: 1000
ARQ - ILM
0'100'200'300'
GRAPHIC SCALE
(IN FEET)
1 INCH = 100 FT
ARQ Realty, LLC
6711 Netherlands Drive - Suite 120
Wilmington, NC 28405
910-720-0054 ext: 700
Bart J. McClain
06/17/2025