20180760 Ver 1_CAMA Application_20180601

Coastal Management
ENVIRONMENTAL QUALITY
May 25, 2018
20180760
TO: Karen Higgins
401 & Buffer Permitting Unit
DWR/Water Quality Permitting
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
BRAXTON DAVIS
Director
r RECEIVED
JUN 012018
DENR-LAND QUALITY
STORMWATER PERMITTING
FROM: Heather Coats, Assistant Major Permits Coordinator
NCDEQ - Division of Coastal Management
127 Cardinal Drive Ext., Wilm., NC 28405 heather. coats(aD-ncdenrgov
Fax: [phone] (Courier 04-16-33)
SUBJECT: CAMA Application Review
Applicant: Wilmington Airport Authority
Project Location: 1740 Airport Blvd., adjacent to Smith Creek, in Wilmington,
New Hanover County
Proposed Project: to mitigate hazards to wildlife by making upgrades to an existing stormwater
system and by the construction of a riprap outfall area
Please indicate below your agency's position or viewpoint on the proposed project and
return this form to Heather Coats at the address above by June 20, 2018. If you have any
questions regarding the proposed project, contact Brooks Surgan at [phone] when appropriate
in-depth comments with supporting data is requested.
REPLY: This agency has no objection to the project as proposed.
**Additional comments may be attached**
This agency has no comment on the proposed project.
This agency approves of the project only if the recommended changes
are incorporated. See attached.
This agency objects to the project for reasons described in the attached
comments.
SIGNED DATED
State of North Carolina i Environmental Quality I Coastal Management
127 Cardinal Drive Ext., Wilmington, NC 28405
910-796-7215

DIVISION OF COASTAL MANAGEMENT
FIELD INVESTIGATION REPORT
APPLICANT'S NAME: Wilmington Airport Authority c/o Troy Beasley (WithersRavenel, Inc.)
LOCATION OF PROJECT SITE: 1740 Airport Boulevard., Suite 12, off of North 23rd Street, within the City of Wilmington,
New Hanover County, adjacent to Smith Creek.
Photo Index — N/A
Location: Lat: 34°15'44.39" N Long: 77°54'09.99" W
3. INVESTIGATION TYPE: CAMA
INVESTIGATIVE PROCEDURE: Dates of Site Visit —1/19/18
Was Applicant Present — Yes (Agent)
PROCESSING PROCEDURE: Application Received — 4/24/2018 (incomplete), 5/10/18 (complete)
Office — Wilmington
6. SITE DESCRIPTION:
(A) Local Land Use Plan— New Hanover County
Land Classification From LUP — Upland — Commence Marsh - Conservation
(B) AEC(s) Involved: PT, EW, ES
(C) Water Dependent: Yes
(D) Intended Use: Commercial
(E) Wastewater Treatment: Existing- CFPUA
Planned- None
(F) Type of Structures: Existing- Airport terminal, parking, runways, roadways, with associated buildings.
Planned- Installation of new stormwater piping and outfall, filling and grading upland, wetland,
and stream areas.
(G) Estimated Annual Rate of Erosion: N/A
HABITAT DESCRIPTION: [AREA]
DREDGED FILLED OTHER
(A) Vegetated Wetlands
-404 Wetlands
3,206 sqft
(B) Non -Vegetated Wetlands (Open Water)
-Stream
3,228 sqft §404/10
465 sqft §404/10
4,214 sqft non -tidal
(C) Other- Highground disturbance
80,431sgft
(D) Total Area Disturbed: 91,544 sq.ft. (approx. 2.1 acres)
(E) Primary Nursery Area: No
(F) Water Classification: C; SW Open: No
8. PROJECT SUMMARY: The applicant proposes to eliminate wildlife habitat areas as a part of FAA required improvements to
mitigate wildlife hazards to aircraft travel within the airfield by making upgrades to an existing stormwater system located over
wetlands by installing new pipes, filling to grade, and constructing a riprap outfall area adjacent to Smith Creek.

Wilmington Airport Authority c/o Troy Beasley (WithersRavenel, Inc.)
Page 2
9. PROJECT DESCRIPTION
The Wilmington International Airport is located at 1740 Airport Boulevard Road (off North 23rd Street) in Wilmington, New Hanover County
and is adjacent to Smith Creek. To locate the project site from NC Highway 17, travel north on North 23rd Street for approximately 2
miles to the intersection of Airport Boulevard. Tum right onto Airport Boulevard. Access to the project site is restricted due to FAA
security regulations and can be accessed by escort from the Airport Authority staff. You may contact the airport Director Julie Wilsey
[phone] at the Wilmington International Airport to schedule a site visit.
The Wilmington International Airport consists of an airport terminal, parking, hangars, runways, roadways, approach lighting systems
including catwalk and light bars, and associated facilities. The Wilmington International Airport is located on a large tract totaling 1,340
acres and is a mix of wetlands and uplands with an average elevation of 7 feet above Normal High Water (NHW). The adjacent properties
surrounding the project site are a mix of undeveloped uplands, commercial and residential properties. The project sites are located within
the active airfield, which is maintained/mowed regularly to manage vegetation at very low heights as required by the FAA.
The Stream 1 Project Area is located adjacent to the Runway Safety Area (RSA) of Runway 35 and Taxiway Safety Area (TSA) of
Taxiway A. The Stream 1 Project Area contains a perennial inland tidal (freshwater) UT to Smith Creek (Stream 1) and non -tidal 404
wetlands (Wetland C). Vegetation in this area is primarily upland grasses and is consistently maintained per FAA requirements. Stream
1 is considered to have a low functional value according to NCWAM assessment provided in the application package. The banks of
Stream 1 were previously riprapped but are heavily eroded from the discharge from an open 30" pipe that drains the airfield. Erosion
has resulted in heavy sedimentation downstream approximately 250' to Smith Creek. Wetland C is adjacent to Stream 1 and is
considered a low quality wetland via NCWAM assessment consisting of Juncus effuses, Fimbristylis spadicea, and Andropogon
glomeratus as well as upland grasses and herbs. Wetland C is fed by a 24" open stormwater pipe and may have been created as the
result of stormwater drainage eroding down to the water table. Wetland C joins to Stream 1 approximately 65' before Stream 1 discharges
in to Smith Creek. Normal High Water within Stream 1 begins at the 30" outfall pipe and meets with Smith Creek but was determined
non -navigable by DCM staff at a site visit on January 19, 2018. However, at the confluence of Stream 1 and Smith Creek DCM has
determined that Smith Creek is navigable and would be subject to the 30' buffer rule. The 30' buffer encompasses an area of 2,031
square feet within the Stream 1 Project Area. A chain link fence crosses the confluence of the Stream 1 and Smith Creek to prevent
wildlife from entering the airfield. Along the south side of the Stream 1 Project Area and adjacent to Smith Creek, a mix of Coastal and
404 type Wetlands are present. Coastal Wetland vegetation consists primarily of broad-leaved cattails (Typha lafdolia) and sawgrass
(Cladium jamaicense). Large expanses of common reed (Phragmites australis) are present and intermixed along the shoreline of Smith
Creek and its tributaries. The wetlands south of the approach to runway 35 range in width from 150 feet to 1500+ feet along the shoreline
of Smith Creek and its tributaries to the highground.
The Stream 3 project area is located adjacent to the RSA of Runway 24 and the TSA of Runway B. The Stream 3 Project Area contains
a perennial, non -tidal UT to Smith Creek (Stream 3). 196 linear feet of Stream 3 is open and has been historically lined with concrete
and flows from three 60" stormwater pipes upstream to three 60" stormwater pipes downstream. There are two eroded grate inlets, one
to the south and one to the north, that contain 42" and 36" stormwater pipes, respectively, that discharge in to the open Stream 3 channel.
Stream 3 has a 404/401 jurisdictional status and the surrounding area is exclusively maintained upland grasses, there is no wetland
vegetation present.
The New Hanover County Land Use Plan classifies the high ground portion of the property as Commerce and the wetland areas as
Conservation. The waters of Smith Creek are classified C; Sw by the Division of Water Resources (DWR), and they are CLOSED to
shellfishing. This section of Smith Creek and its tributaries ARE NOT designated as a Primary Nursery Area (PNA) by the N.C. Division
of Marine Fisheries (DMF).
PROPOSED PROJECT
The applicant proposes to eliminate wildlife habitat areas as a part of FAA required improvements to mitigate wildlife hazards to aircraft
travel within the airfield by making upgrades to an existing stormwater system located over wetlands by installing new pipes, filling to
grade, and constructing a riprap outfall area adjacent to Smith Creek. The proposed project is split in to two focus areas, Stream1 Project
Area, and Stream 3 Project Area. Within the Stream 1 Project Area is Stream 1 and Wetland C. The applicant proposes connect a 245
linear foot 48" aluminum pipe to the existing 30" outfall pipe at the head of Stream 1 through a junction box with manhole frame. The
proposed 48" aluminum pipe would lead from the junction box to the confluence of Stream 1 and Smith Creek (at the metal fence). At

the base of the 48" outfall would be an aluminum endwall and wingwalls and a 24' in width by 16' in length Class 1 Riprap apron. The
apron would be within the channel of Smith Creek, -3.0' below Normal High Water, and would serve as outlet protection to the banks.
The applicant states that a cofferdam would be constructed within the footprint of the proposed riprap dissipator and used to dewater the
project area for installation. Water flow would be pumped around the project areas and back in to the stream until work is completed.
The applicant proposes a 168 linear foot 24" aluminum pipe to connect to the existing 24" outfall pipe through a junction box with manhole
frame. The proposed 24" aluminum pipe would lead from the junction box and connect to the proposed 48" aluminum pipe through a 48"
by 24" WYE and 30" manhole access riser. The connection would be located approximately 70' from the confluence of Stream 1 and
Smith Creek. The applicant proposes 4,600 cubic yards of fill for this project area to bring it to grade. The existing chain link fence would
be replaced behind the new endwall after filling and grading are complete.
Within the Stream 3 Project Area, the applicant proposes to connect three (3) 196 linear foot 72" aluminum pipes to three existing 60"
stormwater pipes located upstream and downstream of Stream 3. Three 30" manhole risers with frame and grate will be installed at the
upstream connection area. As proposed, the existing 42" diameter pipe gate inlet to the south will connect to the proposed 72" pipes
through a new 42" diameter stub out pipe. Similarly, the exiting 36" diameter stormwater pipe and gate inlet to the north will also connect
directly to the proposed 72" pipes through a new 36" diameter stub out pipe. Three manhole access risers with frame and grate will be
installed downstream of Stream 3. The applicant proposes 1,700 cubic yards of fill for this project area to bring it to grade. The existing
concrete channel would not be removed for this project. Silt fencing would be installed around all disturbed areas in accordance with the
Sediment and Erosion Control Plan. Graded areas would be sodded with live grass sod to provide permanent stabilization.
10. ANTICIPATED IMPACTS
The proposed construction of the 245 linear foot 48" aluminum pipe within Steam 1 would result in 3,228 square feet of permanent impact
to Section 404 stream (labeled Impact #1A in Figure 2). The proposed riprap dissipator and associated concrete endwall and wing walls
would result in 465 square feet of permanent impacts to navigable waters within Smith Creek (labeled Impact #1 B in Figure 2). The
proposed 168 linear foot 24" aluminum pipe within Wetland C would result in 3,206 square feet of permanent impacts to non -tidal Section
404 wetlands. The Stream 1 Project area would require 43,101 square feet of high ground disturbance for the placement of 4,600 cubic
yards of fill. The Stream 1 Project Area would have an overall impact of 2,031 square feet within the 30' Public Trust Shoreline and
Public Trust Waters Area of Environmental Concern.
The proposed construction of three 196 linear foot 72" aluminum pipes and stub out connections to existing grate inlets within Stream 3
would result in 4,214 square feet of permanent impacts to perennial, non -tidal stream (labeled Impact #3 in Figure 4). The Stream 3
Project area would require 37,330 square feet of high ground disturbance for the placement of 1,700 cubic yards of fill.
The applicant proposes to mitigate for 3,206 square feet of permanent impacts to Wetlands C within the Stream 1 Project Area by
purchasing wetland credits at a ratio of 1:1 from the Northeast Cape Fear Umbrella Mitigation Bank (NECFUMB), which sells credits at
one-tenth increments. Mitigation for 292 linear feet of Stream 1 impacts (Impact #1A and #113) within the Stream 1 Project Area is
proposed at a 0.5:1 ratio. The applicant proposes to purchase 146.5 linear feet of freshwater tidal stream credits offsite from the
NECFUMB. No compensation is proposed for impacts to Stream 3 within the Stream 3 Project Area.
Submitted by: Brooks R. Surgan Date: May 25, 2018 Office: Wilmington

1/ WithersRavenet
NoOur Peopte. Your Success.
May 9, 2018
NC Division of Coastal Management
Wilmington District
Brooks Surgan
127 Cardinal Drive Ext.
Wilmington, NC 28405
Re: Wilmington International Airport
Wildlife Mitigation Project for Wet Detention Basins and Open Ditches
Wilmington, New Hanover County
CAMA Major Development Permit Application Submittal
WR Project #03110288.31
Dear Mr. Surgan:
The Wilmington Airport Authority requests a CAMA Major Development Permit for the
Wilmington International Airport (ILM) Wildlife Mitigation Project for Wet Detention Basins and
Open Ditches. The proposed project is located at the Wilmington International Airport at 1740
Airport Blvd in Wilmington, New Hanover County, North Carolina (Lat: 34.262814°N; Long: -
77.902695°W).
The Wilmington International Airport (PARID: PID: R04200-001-025-000) is located in the Cape
Fear River Basin (HUC 03030007) and onsite waters drain to Smith Creek. The Water Quality
Classification for Smith Creek is C;Sw and the Stream Index Number is: 18-74-63. Smith Creek is
classified as an "Inland Water" by the NC Division of Marine Fisheries.
Proposed Project
The purpose of the proposed project is to meet FAA requirements by mitigating public safety
hazards associated with aircraft travel by eliminating wildlife habitat hazards within the airfield to
improve aircraft safety. The proposed project consists of piping, filling and grading Wetland C,
Stream 1 and Stream 3, as depicted in the attached exhibits. The FAA has identified these areas as
wildlife hazards, which are within close proximity to the Runway Safety Areas (RSA) and Taxiway
SafetyAreas (TSA) that must be eliminated to meet FAA requirements and prevent wildlife strikes.
These features attract both birds and terrestrial wildlife, with the terrestrial wildlife being the
primary concern. These features are in very close proximity to the runways and taxiways, greatly
increasing the likelihood of a wildlife strike with an aircraft. Several months ago, a small passenger
aircraft struck a coyote on the runway, and the proposed project is critical to improving aircraft and
public safety. So
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Wilmington International Airport - Wildlife Mitigation Project for ;% W i th e f s Rave n e l
Wet Detention Basins and Open Ditches
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The project consists of two separate project areas.
Stream 1 Project Area - ±2.0 acres
o Located south of the end of Taxiway A at Runway 35
o Lat: 34.26853°N; Long: -77.9026771W
o Impact 1A - Stream 1 (Section 404/401 inland tidal water - Not subject to CAMA
jurisdiction)
o Impact 113 - Stream 1(Navigable Water - Subject to CAMA Jurisdiction)
o Impact 2 - Wetland C (non -tidal 404 herbaceous wetland)
The proposed activities at this project area consists of extending the existing stormwater drainage
pipes to beyond the perimeter security fence in order to eliminate wildlife habitat within the RSA
and TSA. This will be accomplished by installing a 48 -inch pipe and junction box within Stream 1
that will connect to the existing 30 -inch stormwater drainage pipe, which outfalls into Stream 1. A
24 -inch pipe will be installed within Wetland C, which will connect to the existing 24 -inch
stormwater drainage pipe which discharges into Wetland C. The 24 -inch pipe in Wetland C and will
connect to the 48 -inch pipe in Stream 1 which will extend beyond the perimeter fence. An
aluminum head wall and wing walls will be constructed at the end of the 48 -inch pipe to stabilize the
proposed fi Il. The perimeter fence will be reconstructed on top of the headwall. A rip -rap dissipator
will be installed below the outfall in order to dissipate outfall velocity and prevent erosion and
sedimentation of downstream waters and wetlands. Once the stormwater pipes and headwall/wing
walls have been installed, the surrounding area will be filled and graded to create a wide, gently
sloping grassed swale which will collect runoff from Runway 35 and Taxiway A and provide water
quality treatment before conveying the runoff beyond the perimeter fence. Also, the filling and
grading in this area will create a gently sloping swale that allows for better vegetation
maintenance/mowing as required by the FAA. Please note that the proposed project will not create
any additional impervious area, and will not change the existing volume of stormwater drainage
discharging into Stream 1.
• Stream 3 Project Area - ±2.0 acres
o Located at north end of Runway 24, between Runway 24 and Taxiway B
o Lat: 34.275290°N; -77.894426°W
o Impact 3 -Stream 3 (non -tidal stream, historically lined with concrete).
The proposed activities at this project area consists of installation of three 72 -inch pipes within the
open portion of Stream 3, which will connect the upstream and downstream 72 -inch stormwater
drainage pipes in order to create a closed drainage system, thereby eliminating the wildlife habitat
as required by the FAA. Once the stormwater pipes have been installed, the surrounding area will
be filled and graded to create a wide, gently sloping grassed swale which will collect runoff from
Runway 24 and Taxiway B and funnel it into two existing grated stormwater inlets and six proposed
grated stormwater inlets. The existing pipes (North Pipe: 36 -inch; South Pipe: 42 -inch) below the
two existing grated stormwater inlets will be connected to the proposed 72 -inch pipes. The six
proposed grated stormwater inlets (30 -inch) will be constructed on top of the proposed 72 -inch
pipes. The upland area around the open portion of Stream 3 currently acts as temporary storm
storage when flow during large storms (i.e. hurricanes) results in flow rates and volumes that caused
the pipes to back up. The cause of the pipes backing up is primarily due to an undersized 11�
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Wilmington International Airport - Wildlife Mitigation Project for ;% th e rS Rave n e
Wet Detention Basins and Open Ditches
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culverts at North Kerr Avenue. When the flow in the pipes backs up, the water overflows into the
upland area around Stream 3, where it is temporarily stored and eventually drains back into the
open ditch once flow decreases. Since the drainage system will be closed, the two existing and eight
grated storm inlets will mimic the existing conditions and will serve dual functions:
• During small storm events, the grated storm inlets will collect storm runoff and convey it
into the proposed pipes.
• During large storm events where the volume and rate of flow is at levels resulting in the
pipes backing up, water will flow out of the grated storm inlets, allowing for temporary
storage in the surrounding uplands. Once flow decreases, the water will flow into the grated
inlets and back into the pipes, returning the area to dry conditions.
Also, the filling and grading in this area will create a gently sloping swale that allows for better
vegetation maintenance/mowing as required by the FAA.
Project History
Onsite wetlands were delineated by WithersRavenel in February 2017. The jurisdictional limits
and status of Wetland C, Stream 1 and Stream 3 were confirmed by Kyle Dahl with the US Army
Corps of Engineers (USACE) on 03/14/17 (SAW -2016-00075). However, a JD has not been issued
to date. A Preliminary JD Request specific for these features has been provided as an Appendix.
A site visit with Chad Coburn with the NC Division of Water Resources (NCDWR) was conducted
on 1/10/18 to review Wetland C, Streams 1 & 3 and to discuss the proposed impacts.
An onsite pre -application meeting was conducted with Brooks Surgan with NC Division of Coastal
Management (NCDCM) and Liz Hair with the USACE was conducted on 1/19/18. During the
meeting, Wetland C, Stream 1 and Stream 3 were reviewed and the proposed impacts were
discussed. Please note that during the meeting, it was confirmed that Stream 3 has been historically
lined with concrete.
In an email dated 1/22/18, Brooks Surgan with NCDCM confirmed that the CAMA jurisdiction for
Stream 1 stops at the perimeter security fence, as this feature is non -navigable upstream of the
perimeter fence. The 30' CAMA AEC at the end of the CAMA jurisdiction extends 30 ft west of the
perimeter fence and into the project area. A copy of Mr. Surgan's email has been provided as an
Appendix.
The Wilmington International Airport has received authorizations for two previous Wildlife Hazard
Mitigation projects that involved removal of wildlife habitat as required by the FAA. The projects
were:
• ILM Runway 24 Wildlife Hazard & NAVAID Critical Area Mitigation - 2014
o USACE 404 Individual Permit (AID# SAW -2011-00455)
o NCDWR Individual 401 WQC (Project #13-1263) Rac�,v�Q
• ILM Wildlife Hazard Mitigation Project - 2017
o USACE NWP 39 (AID# SAW -2016-00075) MP`i
o NCDWR 401 WQC (Project #2017-0798),�M`NG�QN, NC
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Page 3 of 8

Wilmington International Airport - Wildlife Mitigation Project for %0With a rS Rave n e t
Wet Detention Basins and Open Ditches No PFopie „r . ,{,zy,
The cumulative impacts associated with previous permitted actions at the airport exceed
thresholds for requiring mitigation, and therefore the applicant is proposing to provide mitigation
for the proposed impacts associated with the current project.
Existing Conditions
Both project areas are located within the active airfield, which is maintained/mowed regularly to
manage vegetation at very low heights as required by the FAA. The Stream 1 Project Area is located
adjacent to the Runway Safety Area (RSA) of Runway 35 and Taxiway Safety Area (TSA) of Taxiway
A. The Stream 3 Project Area is located adjacent to the RSA of Runway 24 and the TSA of Runway
B.
Stream 1 Project Area contains a perennial inland tidal (freshwater) UT to Smith Creek (Stream 1)
and a non -tidal 404 wetland (Wetland Q. The banks of Stream 1, as well as the vegetation within
Wetland C are regularly maintained. The banks of Stream 1 are very steep, and have been
historically lined with various forms of rip -rap materials in an effort to minimize erosion. However,
heavy erosion of the banks of Stream 1 result in significant sedimentation of the downstream
section of Stream 1, and ultimately Smith Creek. Wetland C is a low quality wetland which was
created as a result of the stormwater drainage eroding down to the water table. Erosion within
Wetland C during storm events also contributes to the sedimentation of downstream portions of
Stream 1.
The Stream 3 Project Area contains a perennial, non -tidal UT to Smith Creek (Stream 3). Both the
upstream and downstream portions of Stream 3 have been historically piped, with only 196 If of
open stream remaining. The channel bottom of Stream 3 has been historically lined with concrete
to prevent erosion. This has effectively eliminated the functional value of Stream 3, but does not
negate the 404/401 jurisdictional status.
Areas of Environmental Concern
Stream 1 is an inland tidal UT to Smith Creek, which is classified as C;Sw, and is subject to a 30'
CAMA Area of Environmental Concern (AEC). NCDCM has determined that CAMA jurisdiction
stops at the perimeter fence, as the upstream portions of Stream 1 are not navigable. The 30' AEC
extends 30 ft west of the perimeter fence, and encompasses approximately 0.05 acres (2,031 sq ft)
of the Stream 1 Project Area. While the proposed project will not result in impervious area within
the 30' AEC, the entire 30' AEC within the project area will be filled and graded.
SITE INFORMATION
Property Size
±1,339 acre
Project Area
Stream 1 Project Area - ±2.0 acres
Stream 3 Project Area - ±2.0 acres
Total Length of Shoreline for Entire Tract
±16,970 If
Project Area within 30' AEC
(Stream 1 Project Area Only)
±0.05 acres
Impervious Area within 30' AEC
None
Impervious Area Associated with Project
None
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Page 4 of 8

Wilmington International Airport - Wildlife Mitigation Project for ;% W i th e rs Rave n e l
Wet Detention Basins and Open Ditches
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Wetlands & Streams
Stream 1 Project Area contains: Ea
• Wetland C - 0.07 acres (Impact 2) ¢O—
• Stream 1(Section 404/10 - Non-CAMA) - 262 If (Impact 1A) O J0N%
• Stream 1(Navigable Waters - CAMA) - 30 If (Impact 16) MPS
Stream 3 Project Area contains_ �1`M114GTflN,NC
• Stream 3 (Section 404) 196 If (Impact 3) QCM
Upland Development
The proposed upland development consists of the filling and grading of the areas within the Stream
1 Project Area and Stream 3 Project Area. The filling and grading are necessary in order to raise the
grades of these areas in order to allow for better vegetation maintenance as required by the FAA.
The Stream 1 Project Area will be graded to create a wide, gently sloping grassed swale which will
capture runoff from Runway 24 and Taxiway A and provide water quality treatment before
conveying the drainage into the wetlands to the east. The Stream 3 project area will be graded to
create a wide, gently sloping grassed swale which will collect runoff from Taxiway B and Runway 24
and funnel the runoff to stormwater inlets.
At Stream 3 Project Area, once the stormwater pipes have been installed, the surrounding area will
be filled and graded to create a wide, gently sloping grassed swale which will collect runoff from
Runway 24 and Taxiway B and funnel it into two existing grated stormwater inlets and six proposed
grated stormwater inlets. The two existing grated storm inlets flow into existing pipes (North Pipe:
36 -inch; South Pipe: 42 -inch), which will be connected to the proposed 72 -inch pipes. The six
proposed grated stormwater inlets (30 -inch) will be constructed on top of the proposed 72 -inch
pipes. The upland area around the open portion of Stream 3 currently acts as temporary storm
storage when flow during large storms (i.e. hurricanes) results in flow rates and volumes that caused
the pipes to back up. The cause of the pipes backing up is primarily due to an undersized NCDOT
culvert at North Kerr Avenue. When the flow in the pipes backed up, the water overflows into the
upland area around Stream 3, where it is temporarily stored and eventually drains back into the
open ditch once flow decreases. Since the drainage system will be closed, the two existing and eight
grated storm inlets will mimic the existing conditions and will serve dual functions:
• During small storm events, the grated storm inlets will collect storm runoff and convey it
into the proposed pipes.
• During large storm events where the volume and rate of flow is at levels resulting in the
pipes backing up, water will flow out of the grated storm inlets, allowing for temporary storage in
the surrounding uplands. Once flow decreases, the water will flow into the grated inlets and back
into the pipes, returning the area to dry conditions.
Proposed Impacts
The proposed impacts consist of 0.07 acre of permanent impactsto non -tidal 404wetlands (Impact
2 / Wetland C), 262 If of permanent impacts to a Section 404/10 inland tidal water (Impact
1A/Stream 1), 30 If of permanent impacts to a navigable stream subject to CAMA jurisdiction
(Impact 113/Stream 1) and 196 If of permanent impacts to a non -tidal stream (Impact 3/Stream 3).
Page 5 of 8

Wilmington International Airport - Wildlife Mitigation Project for %0 WithersRavenel
Wet Detention Basins and Open Ditches Ito )v aeovte ­,, sv;-e».
Ultimately, all jurisdictional features within the project areas will be removed in order to eliminate
the wildlife habitat as required by the FAA.
Avoidance and Minimization
The proposed impacts are necessary to remove wildlife habitat within the RSA and TSA to meet
FAA safety requirements at ILM by removing wildlife habitat to prevent wildlife strikes. Since the
wildlife habitat to be removed consists of jurisdictional wetlands and streams, impacts could not be
avoided or minimized. It should be noted that the wetlands and streams proposed to be impacted
are highly degraded as a result of historic activities at ILM.
Specifically, Wetland C is not a natural wetland and was created as a result of the stormwater
drainage eroding the area within Wetland C to the groundwater table. The vegetation within
Wetland C consists of early successional herbaceous wetland vegetation. WithersRavenel
conducted an NCWAM functional assessment of Wetland C, which determined that the functional
value was "Low'.
Stream 1 is an inland tidal stream which was historically channelized to convey stormwater from
the closed stormwater management system beyond the perimeter fence. The channelization and
down cutting has resulted in very steep banks. Stream 1 experiences significant erosion of the
banks, resulting in sedimentation of the downstream section of Stream 1 and ultimately Smith
Creek. The proposed piping of Stream 1 will result in overall improvements to the water quality
within downstream portions of Stream 1 and Smith Creek by eliminating the current erosion and
sediment transport into these streams. WithersRavenel conducted an NCSAM functional
assessment of Stream 1, which determined that the functional value was "Low".
Stream 3 has been historically lined with concrete to prevent erosion, which effectively eliminated
the functional value of the open portions of Stream 3.
Silt fencing will be installed around all disturbed areas in accordance with the Sediment & Erosion
Control Plan, which will be reviewed and approved by NCDMLR. Upon completion of grading, all
areas will be sodded with live grass sod to provide permanent stabilization.
Installation of the proposed culverts will completed "in the dry". This will be accomplished through
the use of coffer dams and pumping flow around the project areas and back into the streams
downstream. The coffer dam for Stream 1 will be constructed within the footprint of the proposed
rip -rap dissipator during dewatering, and converted to the final rip -rap dissipator once installation
of the culvert is complete.
Mitigation
Since the proposed project does not avoid and minimize impacts to jurisdictionalRTtawali��V0
wetlands, compensatory mitigation is proposed.
Wetland Mitigation MAY
The NCWAM assessment determined the functional value of Wetland C to be "Low". A;DN, NC
Wetland C is not a natural wetland and was created as a result of stormwater rudNoting the
area down to the water table. The applicant proposes to mitigation for the 0.07 acres of permanent
Page 6 of 8

Wilmington International Airport - Wildlife Mitigation Project for 1/ Withers Rave n e l
Wet Detention Basins and Open Ditches '/ Our,eoWe Yo,;r uc ;;.
wetland impacts (Impact 2) at a 1:1 ratio. The mitigation will be purchased from the Northeast Cape
Fear Umbrella Mitigation Bank (NECFUMB), which sells credits in one-tenth acre increments.
Therefore, the applicant proposes to purchase 0.10 acres of wetland mitigation. A copy of the
Letter of Availability from NECFUMB has been provided as an Appendix.
Stream Mitigation
The NCSAM assessment of Stream 1 determined the functional value to be "Low". The proposed
piping of Stream 1 will result in an overall benefit to the water quality of the downstream portions
of Stream 1, and ultimately Smith Creek, by eliminating the introduction of significant levels of
sediment resulting from the eroding stream banks. Considering the low functional value of Stream
1 and water quality benefits resulting from eliminating the sedimentation from the eroding banks,
a 0.5:1 mitigation ratio is proposed for Impacts 1A& 1B, which total 292 If. The proposed 0.5:1 ratio
results in the purchase of 146 If of offsite stream credits. NECFUMB has freshwater tidal stream
credits available. Therefore, the applicant proposes to purchase the 146.5 If of freshwater tidal
stream credits from the NECFUMB. A copy of the Letter of Availability from the NECFUMB has
been provided as an Appendix.
Stream 3 has been historically lined with concrete, which effectively eliminated the functional
value. Therefore, the applicant does not propose compensatory mitigation for impacts to Stream 3
(Impact 3).
Proposed Miti ation
Table
Feature/Impact
Proposed
Proposed
Proposed Mitigation
Impact
Mitigation Ratio
Wetland C
0.07 acres
1:1
0.07 acres - Riparian Wetland Credits
(Impact 2)
Mitigation (purchasing 0.10 acres)
Stream 1
292 If
0.5:1
147 If - Freshwater Tidal Stream Credits
(Impacts 1A& 1B)
Stream 3
196 If
N/A
No Mitigation Proposed
(Impact 3)
Please feel free to contact me if you have questions or require additional information to complete
your review.
Sincerely
WithersRavenel
Troy Beasley
Senior Environmental Scientist
Page 7 of 8

DCM MP -1
APPLICATION for
Major Development
(last revised 12/27/06)
Permit 0
North Carolina DIVISION OF COASTAL MANAGEMENT
1. Primary Applicant/ Landowner Information
Project Name (if applicable)
Business Name
ILM Wildlife Mitigation Project to Remove Wet Detention
Wilmington Airport Authority
Basins and Other Stormwater Improvements
Applicant 1: First Name
MI
Last Name
Julie
A
Wilsey
Applicant 2: First Name
MI
Last Name
If additional applicants, please attach an additional page(s) with names listed.
Mailing Address
PO Box
City
State
1740 Airport Blvd, Suite 12
Agent/ Contractor 2: First Name
Wilmington
NC
ZIP
Country
Phone No.
FAX No.
28461
USA
910 - 941 - 4333 ext.
-
Street Address (if different from above)
City
State
ZIP
Email
[e-mail]
2. Agent/Contractor Information
Business Name
WithersRavenel, Inc.
Agent/ Contractor 1: First Name
MI
Last Name
Troy
H
Beasley
Agent/ Contractor 2: First Name
MI
Last Name
Mailing Address
PO Box
City
State
219 Station Road, Suite 101
Wilmington
NC
ZIP
Phone No. 1
Phone No. 2
28405
910 - 509 -
6512 ext.
910 - 622 - 0122 ext.
FAX No.
Contractor #
Street Address (if different from above)
City
State
ZIP
Email
R
[e-mail]
� NG
<Form continues on back>��,NUNG,ON,
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252-808.2808 1.888-4RC0ASi .. www. ncccasta1managerr+ent.nat

Form DCM MP -1 (Page 3 of 6)
APPLICATION for
Major Development Permit
3. Project Location
County (can be multiple)
Street Address
State Rd. #
New Hanover
1740 Airport Blvd
16,970 linear feet
Subdivision Name
City
State
Zip
Wilmington
NC
28461 -
Phone No.
Lot No.(s) (if many, attach additional page with list)
910 - 341 - 4333 ext.
I I I ,
a. In which NC river basin is the project located?
b. Name of body of water nearest to proposed project
cig-
UT to Smith Creek:
c. Is the water body identified in (b) above, natural or manmade?
d. Name the closest major water body to the proposed project site.
®Natural ❑Manmade ❑Unknown
Smith Creek (18-74-63)
e. Is proposed work within city limits or planning jurisdiction?
f. If applicable, list the planning jurisdiction or city limit the proposed
®Yes ❑No
work falls within.
New Hanover County
4.
Site Description
a.
Total length of shoreline on the tract (ft.)
b. Size of entire tract (sq.ft.)
16,970 linear feet
Entire Parcel - 58,370,400 sf (1,340 acres)
c.
Size of individual lot(s)
d. Approximate elevation of tract above NHW (normal high water) or
N/A, I I
NWL (normal water level)
(If many lot sizes, please attach additional page with a list)
7' ®NHW or ❑NWL
e.
Vegetation on tract
The project is located within the maintained airfield at the Wilmington International Airport, and the vegetation consists of
mowed grasses and weeds.
f.
Man-made features and uses now on tract
The project is located within the Wilmington International Airport, and the man-made features on the tract include two
runways, numerous taxiways, an airport terminal building, parking lots, accessory buildings and other infrastructure
associated with operation of an airport.
The specific project locations (Impacts 1, 2 & 3) are located immediately downstream of existing stormwater drainage pipes
associated with the onsite stormwater management system.
g.
Identify and describe the existing land uses adiacent to the proposed project site.
The land uses adjacent to the project site consists of a mixtured of undeveloped land, residential land use and commercial
land use.
h.
How does local government zone the tract?
i. Is the proposed project consistent with the applicable zoning?
A-1 - Airport Industrial District
(Attach zoning compliance certificate, if applicable)
®Yes []No ❑NA
j.
Is the proposed activity part of an urban waterfront redevelopment proposal? []Yes ®No
k.
Hasa professional archaeological assessment been done for the tract? If yes, attach a copy. ❑Yes ®No ❑NA
If yes, by whom?
I.
Is the proposed project located in a National Registered Historic District or does it involve a []Yes ®No [INA
National Register listed or eligible property? ^'G�� Go
EG'
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1 N, NC
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Form DCM MP -1 (Page 2 of 6)
APPLICATION for
Major Development Permit
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Form DCM MP -1 (Page 4 of 6)
APPLICATION for
Major Development Permit
m. (i) Are there wetlands on the site? ®Yes []No
(ii) Are there coastal wetlands on the site? []Yes ®No
(iii) If yes to either (i) or (ii) above, has a delineation been conducted? ®Yes ❑No
(Attach documentation, if available)
n. Describe existing wastewater treatment facilities.
The Wilmington International Airport is serviced by the CFPUA sewer system and WWTP. The proposed project consists of
elimination of wildlife habitat adjacent to the runways and taxiways and will not generate wastewater.
o. Describe existing drinking water supply source.
CFPUA water system
p. Describe existing storm water management or treatment systems.
The onsite stormwater management system consists of numerous vegetated conveyances which receive discharge for the
large storwmater collection network.
5. Activities and Impacts
a. Will the project be for commercial, public, or private use? ®Commercial ❑Public/Government
❑Private/Community
b. Give a brief description of purpose, use, and daily operations of the project when complete.
The purpose of the proposed project is to mitigate safety hazards by eliminating wildlife habitat/attractants within the airfield
near the runways and taxiways in order to improve aircraft safety during arrival and departure. The FAA has identified
several wildlife habitat features within the Wilmington International Airport which must be removed, as these features attract
both birds and terrestrial wildlife, with the terrestrial wildlife being the primary concern. The close proximity of the these
features to the runways and taxiways significantly increase the likelihood of a wildlife strike by an aircraft. In 2017, a small
passsenger plane struck a coyote on the runway, so the proposed project is critical to aircraft and public safety.
This application is specific to the removal of Stream 1 (inland -tidal water), Stream 3 and Wetland C. Stream 1 (Impacts 1A &
1 B) and Wetland C (Impact 2) are adjacent to the Runway Safety Area (RSA) of Runway 35 and the Taxiway Safety Area
(TSA) of Taxiway A. Stream 3 (Impact 3) is located adjacent to the RSA for Runway 24 and the TSA for Taxiway B.
Please note that Stream 1 is an inland -tidal stream. However, in an email from Brooks Surgan, dated 1/22/18, it was
determined that CAMA jurisdiction stops at the perimeter fence, as portion of Stream 1 upstream of the perimeter fence is
not navigable. Therefore the portions of Stream 1 upstream the perimeter fence (Impact 1A) are considered Section 404/10
waters, which are not subject to CAMA jurisdiction. The portion of Stream 1 downstream of the perimeter fence (Impact 1 B)
is considered navigable waters subject to CAMA jurisdiction.
The completion of the project will increase aircraft and public safety as part of the normal daily operation and activities
associated with the operation of the airport
c. Describe the proposed construction methodology, types of construction equipment to be used during construction, the number of each type
of equipment and where it is to be stored.
The project will be constructed by installing drainage pipes connecting to the existing storm drainage system in order to
capture and convey flow past the perimeter fence in order to eliminate wildlife habitat within the perimeter fence and within
the RSA and TSA. Standard commercial construction equipment of various size and number will be used to construct the
proposed project (see Project Narrative for more information). All equipment will be stored outside of the AEC in uplands
adjacent to the projects.
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Form DCM MP -1 (Page 5 of 6)
APPLICATION for
Major Development Permit
d. List all development activities you propose.
The development actitivies consist of extending the existing storm drainage pipes in order to eliminate wildlife habitat within
the RSA and TSA.
At the Stream 1 Project Area (Impacts 1A & 1 B/Stream & Impact 2/Wetland C), the existing stormwater drainage pipes will
be extended beyond the perimeter fence. This will be accomplished by installing a 245 -ft long x 48" aluminum pipe and
junction box within Stream 1 that will connect to the existing 30" stormwater drainage pipe, which outfalls into Stream 1. A
168 -ft long x 24" aluminum pipe will be installed within Wetland C, which will connect to the existing 24" stormwater drainage
pipe which discharges into Wetland C. The 24" pipe in Wetland C and will connect to the 48" pipe in Stream 1 which will
extend beyond the perimeter fence. An aluminum head wall and wing walls will be constructed at the end of the 48" pipe to
stabilize the proposed fill. The perimeter fence will be reconstructed on top of the headwall. A rip -rap dissipator will be
installed below the outfall in order to dissipate outfall velocity and prevent erosion and sedimentation of downstream waters
and wetlands. Once the stormwater pipes and headwall/wing walls have been installed, the surrounding area will be filled
and graded to create a wide, gently sloping grassed swale which will collect runoff from Runway 35 and Taxiway A and
provide water quality treatment before conveying the runoff beyond the perimeter fence. Also, the filling and grading in this
area will create a gently sloping swale that allows for better vegetation maintenance/mowing as required by the FAA. Please
note that the proposed project will not create any additional impervious area, and will not change the existing volume of
stormwater drainage discharging into Stream 1.
At the Stream 3 Project Area (Impact 3/Stream 3), which is outside of CAMA jurisdiction, three 196 -ft long x 72" aluminum
pipes will be installed within the open portion of Stream 3, which will connect the upstream and downstream 72" stormwater
drainage pipes in order to create a closed drainage system, thereby eliminating the wildlife habitat as required by the FAA.
Once the stormwater pipes have been installed, the surrounding area will be filled and graded to create a wide, gently
sloping grassed swale which will collect runoff from Runway 24 and Taxiway B and funnel it into two existing grated
stormwater inlets and six proposed grated stormwater inlets. The existing pipes (North Pipe: 36"; South Pipe: 42") below the
two existing grated stormwater inlets will be connected to the proposed 72" pipes. The six proposed grated stormwater inlets
(30 -inch) will be constructed on top of the proposed 72 -inch pipes. The upland area around the open portion of Stream 3
currently acts as temporary storm storage when flow during large storms (i.e. hurricanes) results in flow rates and volumes
that caused the pipes to back up. The cause of the pipes backing up is primarily due to an undersized NCDOT culvert at
North Kerr Avenue. When the flow in the pipes backed up, the water overflows into the upland area around Stream 3, where
it is temporarily stored and eventually drains back into the open ditch once flow decreases. Since the drainage system will be
closed, the two existing and eight grated storm inlets will mimic the existing conditions and will serve dual functions:
• During small storm events, the grated storm inlets will collect storm runoff and convey it into the proposed pipes.
• During large storm events where the volume and rate of flow is at levels resulting in the pipes backing up, water will
flow out of the grated storm inlets, allowing for temporary storage in the surrounding uplands. Once flow decreases,
the water will flow into the grated inlets and back into the pipes, returning the area to dry conditions.
e. Are the proposed activities maintenance of an existing project, new work, or both? new work
f. What is the approximate total disturbed land area resulting from the proposed project? ±4.0 ❑Sq.Ft or ®Acres
g. Will the proposed project encroach on any public easement, public accessway or other area ❑Yes ®No ❑NA
that the public has established use of?
h. Describe location and type of existing and proposed discharges to waters of the state.
The proposed discharges to waters of the state consists of existing and ongoing stormwater discharges. Impacts 1 A, 1 B & 2
are located south of the Runway 35 end of Taxiway A. The existing stormwater drainage pipes will be extended to outfall
into the section of Stream 1 downstream of the perimeter fence. Impact 3 is located at the north end of Runwway 24,
between Runway 24 and Taxiway B. The existing stormwater drainage pipes will be extended to create a completely
enclosed system, which will contintue to discharge stormwater into the section of Stream 3 beyond of the perimeter fence.
i. Will wastewater or stormwater be discharged into a wetland? ®Yes ❑No [INA
If yes, will this discharged water be of the same salinity as the receiving water? ®Yes []No ❑NA
j. Is there any mitigation proposed? ®Yes ❑No ❑NA
If yes, attach a mitigation proposal.
�Ct1v �.
<Form continues on back>
6. Additional Information MNl y - _
In addition to this completed application form, (MP -1) the following items below, if applicable, must be submitted in order for the ape lg�l� ast*
package to be complete. Items (a) — (f) are always applicable to any major development application. Please consy#,th �'f�1Y, t
instruction booklet on how to property prepare the required items below. DCM yVV �I-
252-808-2808 . 1-888-4RCOAST ., www.nccoastaimanagement.net

Form DCM MP -1 (Page 6 of 6) APPLICATION for
Major Development Permit
a.
A project narrative.
b.
An accurate, dated work plat (including plan view and cross-sectional drawings) drawn to scale. Please give the present status of the
proposed project. Is any portion already complete? If previously authorized work, clearly indicate on maps, plats, drawings to distinguish
between work completed and proposed.
c.
A site or location map that is sufficiently detailed to guide agency personnel unfamiliar with the area to the site.
d.
A copy of the deed (with state application only) or other instrument under which the applicant claims title to the affected properties.
e.
The appropriate application fee. Check or money order made payable to DENR.
f.
A list of the names and complete addresses of the adjacent waterfront (riparian) landowners and signed return receipts as proof that such
owners have received a copy of the application and plats by certified mail. Such landowners must be advised that they have 30 days in
which to submit comments on the proposed project to the Division of Coastal Management,
Name New Hanover County Property Management - Jerome Fennel - Director Phone No. 910-798-4330
Address 200 Division Drive, Wilmington, NC 28401
Name NCDOT - Karen E. Collette - Division Engineer Phone No. 910-341-2000
Address 5501 Barbados Blvd, Castle Hayne, NC 28429
Name Phone No.
Address
g.
A list of previous state or federal permits issued for work on the project tract. Include permit numbers, permittee, and issuing dates.
Numerous state and federal permits have been issued for the
project tract. However, there have been no permits issued
for the specific project areas (see Project Narrative for more
information).
h.
Signed consultant or agent authorization form, if applicable.
i.
Wetland delineation, if necessary.
j.
A signed AEC hazard notice for projects in oceanfront and inlet areas. (Must be signed by property owner)
k.
A statement of compliance with the N.C. Environmental Policy Act (N.C.G.S. 113A 1-10), if necessary. If the project involves expenditure
of public funds or use of public lands, attach a statement documenting compliance with the North Carolina Environmental Policy Act.
7. Certfcation and Permission to Enter on Land
I understand that any permit issued in response to this application will allow only the development described in the application.
The project will be subject to the conditions and restrictions contained in the permit.
I certify that I am authorized to grant, and do in fact grant permission to representatives of state and federal review agencies to
enter on the aforementioned lands in connection with evaluating information related to this permit application and follow-up
monitoring of the project.
I further certify that the information provided in this application is truthful to the best of my knowledge.
Date _5-9-18 Print Name Troy Beasley - Authorized Agent ,Q
Signature war'
Please indicate application attachments pertaining to your proposed project.
®DCM MP -2 Excavation and Fill Information
®DCM MP -3 Upland Development
❑DCM MP -4 Structures Information
®DCM MP -5 Bridges and Culverts
0-
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Form DCM MP -2
EXCAVATION and FILL
(Except for bridges and culverts)
Attach this form to Joint Application for CAMA Major Permit, Form DCM MP -1. Be sure to complete all other sections of the Joint
Application that relate to this proposed project. Please include all supplemental information.
Describe below the purpose of proposed excavation and/or fill activities. All values should be given in feet.
1.
Access
NThis section not applicable
a.
Amount of material to be excavated from below NHW or NWL in
b. Type of material to be excavated.
Other
Channel
(NLW or
Canal
Boat Basin
Boat Ramp
Rock Groin
Rock
Breakwater
(excluding
shoreline
or other wetlands (WL)? If any boxes are checked, provide the
NWL)
number of square feet affected.
❑CW ❑SAV ❑SB
stabilization
Length
OWL ❑None
(ii) Describe the purpose of the excavation in these areas:
2.
500 If
Width
a.
Location of disposal area.
b. Dimensions of disposal area.
c.
(i) Do you claim title to disposal area?
d. (i) Will a disposal area be available for future maintenance?
400 If
Avg. Existing
❑Yes ❑No [INA
(ii) If no, attach a letter granting permission from the owner.
(ii) If yes, where?
NA
NA
3 ft
Depth
Final Project
NA
NA
N/A
Depth
1.
EXCAVATION
NThis section not applicable
a.
Amount of material to be excavated from below NHW or NWL in
b. Type of material to be excavated.
cubic yards.
c.
(i) Does the area to be excavated include coastal wetlands/marsh
d. High -ground excavation in cubic yards.
(CW), submerged aquatic vegetation (SAV), shell bottom (SB),
or other wetlands (WL)? If any boxes are checked, provide the
number of square feet affected.
❑CW ❑SAV ❑SB
OWL ❑None
(ii) Describe the purpose of the excavation in these areas:
2.
DISPOSAL OF EXCAVATED MATERIAL
®This section not applicable
a.
Location of disposal area.
b. Dimensions of disposal area.
c.
(i) Do you claim title to disposal area?
d. (i) Will a disposal area be available for future maintenance?
❑Yes ❑No [INA
❑Yes ❑No [INA
(ii) If no, attach a letter granting permission from the owner.
(ii) If yes, where?
e. (i) Does the disposal area include any coastal wetlands/marsh
(CW), submerged aquatic vegetation (SAV), shell bottom (SB),
or other wetlands (WL)? If any boxes are checked, provide the
number of square feet affected.
❑CW ❑SAV ❑SB
OWL ❑None
(ii) Describe the purpose of disposal in these areas:
f. (i) Does the disposal include any area in the water?
❑Yes ❑No [INA
(ii) If yes, how much water area is affected?
vtv
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Form DCM MP -2 (Excavation and Fill, Page 2 of 3)
3. SHORELINE STABILIZATION ®This section not applicable
(if development is a wood groin, use MP -4 — Structures)
a. i ype or snorenne stapmzation:
❑Bulkhead ❑Riprap ❑Breakwater/Sill ❑Other:
c. Average distance waterward of NHW or NWL:
e. Type of stabilization material:
g. Number of square feet of fill to be placed below water level
Bulkhead backfill Riprap
Breakwater/Sill Other
i. Source of fill material.
b. Length:
Width:
d. Maximum distance waterward of NHW or NWL:
f. (i) Has there been shoreline erosion during preceding 12
months?
[]Yes ❑No ❑NA
(ii) If yes, state amount of erosion and source of erosion amount
information.
h. Type of fill material.
4. OTHER FILL ACTIVITIES [I This section not applicable
(Excluding Shoreline Stabilization)
a. (i) Will fill material be brought to the site? ®Yes ❑No DNA b. (i) Will fill material be placed in coastal wetlands/march (CWl
If yes,
(ii) Amount of material to be placed in the water N/A
(iii) Dimensions of fill area 250 If x 200 If at each Impact Area
(iv) Purpose of fill
At Impacts 1A & 1 B (Stream 1) a 245 -ft long x 48"
aluminum drainage pipe and junction box will be installed to
connect to the existing 30" drainage pipe. At Impact 2
(Wetland C), the existing 24" drainage pipe will be
extended by installing a 168 -ft long x 24" alumimum pipe
which will connect to the 48" drainage pipe within Stream 1,
which will extend to the perimeter fence. Fill will be placed
on top of the drainage pipe and within the uplands
surrounding Stream 1 and Wetland C in order to raise the
grades to match surrounding grades to facilitate vegetation
maintenance/mowing as required by the FAA.
At Impact 3, three 196 -ft long x 72" aluminum drainage
pipes will be installed to connect the upstream and
downstream 72" pipes to create a completely closed
drainage system. Two existing grated storm inlets and six
proposed storm inlet will be connected to the proposed 72"
pipes (see Project Narrative for detailed explanation). Fill
will be placed on top of the culverts and within the
surrounding uplands to raise the grades to match
surrounding grades to facilitate vegetation
maintenance/mowing as required by the FAA.
submerged aquatic vegetation (SAV), shell bottom (SB), or
other wetlands (WL)? If any boxes are checked, provide the
number of square feet affected.
❑CW ❑SAV ❑SB
OWL Wetland C - non -tidal 404 Wetland ❑None
(ii) Describe the purpose of the fill in these areas:
3,206 sf of permanent wetland impacts - A 24" drainage pipe
and fill will be placed within Wetland C to eliminate widlife
habitat as required by the FAA.
MPS 1 � 2p�8
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5. GENERAL
a. How will excavated or fill material be kept on site and erosion b. What type of construction equipment will be used (e.g., dragline,
controlled? backhoe, or hydraulic dredge)?
Fill material will be kept onsite and erosion controlled through the Excavators, dump trucks and bulldozer.
sediment and erosion control plan. Sediment and erosion
control measures will consist of installation of silt fencing around
252-808-2808 :: 1-888-4RCOAST :: www.nccoastaimanagement.net revised: 12/26/06

Form DCM MP -2 (Excavation and Pili, Page 3 of 3)
all disturbed areas. Graded areas will be covered with live sod
to provide permanent stabilization. Additionally, work will be
completed in the dry by diverting flow around the project area.
using coffer dams and pumping the water around the project
area and back into Stream 1.
c. (i) Will navigational aids be required as a result of the project?
❑Yes ❑No ®NA
(ii) If yes, explain what type and how they will be implemented.
05109/18
Date
ILM Wildlife Mitigation Project to Remove Wet Detention Basins
and Other Stormwater improvements
Project Name
Wilmington Airport Authority
Applicant Na
CI,tOf t t Or
Applicant Signat e
d. (i) Will wetlands be crossed in transporting equipment to project
site? ❑Yes []No ®NA
(ii) If yes, explain steps that will be taken to avoid or minimize
environmental impacts.
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Form DCM MP -3
UPLAND DEVELOPMENT
(Construction and/or land disturbing activities)
Attach this form to Joint Application for CAMA Major Permit, Form DCM MP -1. Be sure to complete all other sections of the Joint
Application that relate to this proposed project. Please include all supplemental information.
GENERAL UPLAND DEVELOPMENT I
Type and number of buildings, facilities, units or structures
proposed
Two drainage pipes (Impacts 1 & 2) within the CAMA AEC
are proposed to be extended to the perimeter security
fence to eliminate open water and wildlife habitat within the
TSA of Taxiway A and RSA of Runway 35. Additionally,
three drainage pipes (Impact 3) outside of the CAMA AEC
are proposed to be extended to eliminate open water within
the TSA of Taxiway 24.
c. Density (give the number of residential units and the units per
acre).
N/A
If the proposed project will disturb more than one acre of land, the
Division of Land Resources must receive an erosion and
sedimentation control plan at least 30 days before land -disturbing
activity begins.
(i) If applicable, has a sedimentation and erosion control plan been
submitted to the Division of Land Resources?
❑Yes ®No ❑NA
(ii) If yes, list the date submitted: S&EC plans are being
prepared and will be submitted to DMLR for approval.
g. Give the percentage of the tract within the coastal shoreline AEC to
be covered by impervious and/or built -upon surfaces, such as
pavement, building, rooftops, or to be used for vehicular driveways
or parking.
100% of the 30' AEC within the project area will be
removed as a result of the proposed
i. Give the percentage of the entire tract to be covered by impervious
and/or built -upon surfaces, such as pavement, building, rooftops,
or to be used for vehicular driveways or parking.
N/A
j. Describe proposed method of sewage disposal.
N/A
b Number of lots or parcels
N/A
d. Size of area to be graded, filled, or disturbed including roads,
ditches, etc
±2.0 acres
f List the materials (such as marl, paver stone, asphalt, or concrete)
to be used for impervious surfaces
N/A
h. Projects that require a CAMA Major Development Permit may also
require a Stormwater Certification.
(i) Has a site development plan been submitted to the Division of
Water Quality for review?
❑Yes ®No [INA
(ii) If yes, list the date submitted: The stormwater management
permit application is being prepared and will be submitted
to NCDEQ Stormwater Permitting Unit.
k Have the facilities described in Item (i) received state or local
approval?
❑Yes ❑No ®NA
If yes, attach appropriate documentation.
RECEIVED
DCM WILMINGTON, NC
i J.
252.848-28082 :: 1-888-4RCOAST n www.nccoastalmanagement.net revised: 12/26/06

Form DCM MP -3 (Upland Development, Page 2 of 2)
I Describe location and type of proposed discharges to waters of the m Does the proposed project include an innovative stormwater
state (e g., surface runoff, sanitary wastewater, industrial/ design?
commercial effluent, "wash down" and residential discharges). ❑Yes ®No [INA
The existing stormwater drainage pipes at Impacts 1, 2 & 3 If yes, attach appropriate documentation_
will be extended and will continue to discharge into the
same waters of the state they currently discharge into.
m
Describe proposed drinking water supply source (e g., well,
community, public system, etc.)
N/A
o. When was the lot(s) platted and recorded?
11/25/1966
4-6-18
Date
ILM Wildlife Mitigation Project to Remove Wet Detention Basins
and Other Stormwater Improvements
n. (i) Will water be impounded? ❑Yes ®No ❑NA
(ii) If yes, how many acres?
p If proposed development is a subdivision, will additional utilities be
installed for this upland development?
❑Yes ❑No ®NA
Project Name
Wilmington Airport Authority
Applicant Nam
Applicant Sign re
RECEIVED
DCM WILMINGTON, NC
292-808-2808 :: 1-888-4RCOAST :: www.nccoastaimanagement.net revised: 12/26106

Form DCM MP -5
BRIDGES and CULVERTS
Attach this form to Joint Application for CAMA Major Permit, Form DCM MP -1. Be sure to complete all other sections of the Joint
Application that relate to this proposed project. Please include all supplemental information.
1. BRIDGES ®This section not applicable
a. Is the proposed bridge:
❑Commercial ❑Public/Government ❑Private/Community
c. Type of bridge (construction material):
b. Water body to be crossed by bridge:
d. Water depth at the proposed crossing at NLW or NWL:
e. (i) Will proposed bridge replace an existing bridge? ❑Yes []No f. (i) Will proposed bridge replace an existing culvert? ❑Yes ❑No
If yes, If yes,
(ii) Length of existing bridge: (ii) Length of existing culvert:
(iii) Width of existing bridge: (iii) Width of existing culvert:
(iv) Navigation clearance underneath existing bridge: (iv) Height of the top of the existing culvert above the NHW or
(v) Will all, or a part of, the existing bridge be removed? NWL:
(Explain) (v) Will all, or a part of, the existing culvert be removed?
(Explain)
9. Length of proposed bridge: h. Width of proposed bridge:
i. Will the proposed bridge affect existing water flow? ❑Yes ❑No j. Will the proposed bridge affect navigation by reducing or
If yes, explain: increasing the existing navigable opening? ❑Yes []No
If yes, explain:
k- Navigation clearance underneath proposed bridge: I. Have you contacted the U.S. Coast Guard concerning their
approval? ❑Yes [:]No
If yes, explain:
m. Will the proposed bridge cross wetlands containing no navigable n. Height of proposed bridge above wetlands:
waters? ❑Yes []No
If yes, explain:
2. CULVERTS ❑This section not applicable
a- Number of culverts proposed: 5
b. Water body in which the culvert is to be placed:
UTs to Smith Creek
Vk
< Form continues on back>
252-808-2808 :: 1-888-4111COAST :: www nccoastalmanagement,ne__t
Mpy 1o�pla
-SON, NC
revised: 10/26/06

Form DCM MP -5 (Bridges and Culverts, !Page 2 of 4)
C. Type of culvert (construction material):
At Impacts 1A & 1 B (Stream 1) a 245 -ft long x 48" aluminum drainage pipe and junction box will be installed to connect to the
existing 30" drainage pipe. At Impact 2 (Wetland C), the existing 24" drainage pipe will be extended with a 168 -ft long x 24"
aluminum pipe which will connect to the 48" pipe within Stream 1, which will extend to beyond the perimeter fence through
an aluminum headwall with wingwalls. Fill will be placed on top of the drainage pipe and within the uplands surrounding
Stream 1 and Wetland C in order to raise the grades to match surrounding grades to facilitate vegetation
maintenance/mowing as required by the FAA (see Project Narrative for more information).
At Impact 3 (Stream 3), three 196 -ft long x 72" aluminum drainage pipes will be installed to connect the existing upstream and
downstream 72" pipes to create a completely closed drainage system. Two existing grated storm inlets and six proposed storm
inlet will be connected to the proposed 72" pipes (see Project Narrative for detailed explanation). Fill will be placed ontop of the
culverts and within the surrounding uplands to raise the grades to match surrounding grades to facilitate vegetation
maintenance/mowing as required by the FAA.
d. (i) Will proposed culvert replace an existing bridge?
❑Yes ®No
If yes,
(ii) Length of existing bridge:
(iii) Width of existing bridge:
(iv) Navigation clearance underneath existing bridge: _
(v) Will all, or a part of, the existing bridge be removed?
(Explain)
f. Length of proposed culvert: Impacts 1A&1 B (Stream 1) - 245 If
Impact 2 (Wetland C) - 168 If
Impact 3 (Stream 3) - 166 If
h. Height of the top of the proposed culvert above the NHW or NWL.
N/A - project consists of extension of an existing storm
drainage pipe from a closed stormwater management
system (see Impact Plans for details).
Will the proposed culvert affect navigation by reducing or
increasing the existing navigable opening? ❑Yes ®No
If yes, explain:
e. (i) Will proposed culvert replace an existing culvert?
❑Yes ®No
If yes,
(ii) Length of existing culvert(s):
(iii) Width of existing culvert(s):
(iv) Height of the top of the existing culvert above the NHW or
NWL:
(v) Will all, or a part of, the existing culvert be removed?
(Explain)
9- Width of proposed culvert: Impacts 1A&1 B (Stream 1) - 48"
Impact 2 (Wetland C) - 24"
Impact 3 (Stream 3) - 72"
i. Depth of culvert to be buried below existing bottom contour.
N/A - project consists of extension of an existing storm
drainage pipe from a closed stormwater management
system (See Impact Plans for details).
k. Will the proposed culvert affect existing water flow?
❑Yes ®No
If yes, explain: Volume of current stormwater discharge
will be maintained, as only the outfall is being relocated.
3. EXCAVATION and FILL [I This section not applicable
a. (i) Will the placement of the proposed bridge or culvert require any
excavation below the NHW or NWL? ❑Yes ®No
If yes,
(ii) Avg. length of area to be excavated:
(iii) Avg. width of area to be excavated:
(iv) Avg. depth of area to be excavated:
(v) Amount of material to be excavated in cubic yards:
b. (i) Will the placement of the proposed bridge or culvert require any
excavation within coastal wetlands/marsh (CW), submerged
aquatic vegetation (SAV), shell bottom (SB), or other wetlands
(WL)? If any boxes are checked, provide the number of square
feet affected.
❑CW ❑SAV ❑SB
❑WL ®None
ID
(ii) Describe the purpose of the excavation 1.aas
Mph 1 � jz1%
252-808-2808 :: 1-888-4RCOAST :: www.nccoastaimanagement.net
'DOM

Form DCM MP -5 (Bridges and Culverts, Page 3 of 4)
C.
d.
e.
(i) Will the placement of the proposed bridge or culvert require any
high -ground excavation? ❑Yes ®No
If yes,
(ii) Avg. length of area to be excavated:
(iii) Avg. width of area to be excavated:
(iv) Avg. depth of area to be excavated:
(v) Amount of material to be excavated in cubic yards:
If the placement of the bridge or culvert involves any excavation, please complete the following:
(i) Location.of the spoil disposal area:
(ii) Dimensions of the spoil disposal area:
(iii) Do you claim title to the disposal area? ❑Yes ❑No (If no, attach a /ettergranting permission from the owner.)
(iv) Will the disposal area be available for future maintenance? ❑Yes ❑No
(v) Does the disposal area include any coastal wetlands/marsh (CW), submerged aquatic vegetation (SAVs), other wetlands (WL), or shell
bottom (SB)?
❑CW ❑SAV OWL ❑SB ❑None
If any boxes are checked, give dimensions if different from (ii) above.
(vi) Does the disposal area include any area below the NHW or NWL? ? []Yes ❑No
If yes, give dimensions if different from (ii) above.
(i) Will the placement of the proposed bridge or culvert result in any
fill (other than excavated material described in Item d above) to
be placed below NHW or NWL? ®Yes []No
If yes,
(ii) Avg. length of area to be filled: 293 If
(iii) Avg. width of area to be filled: 15 If
(iv) Purpose of fill: At Stream 1 Project Area, a 48"
stormwater drainage pipe will be placed within Stream 1,
and the remainder of Stream 1 will be filled in order to
eliminate wildlife habitat as required by the FAA.
At Stream 3 Project Area, three 72" pipes will be installed
within Stream 3 connecting to the existing upstream and
downstream 72" pipes. The remainder of Stream 3 will
be filled in order to elminate wildlife habiat as required by
the FAA.
g. (i) Will the placement of the proposed bridge or culvert result in any
fill (other than excavated material described in Item d above) to
be placed on high -ground? ®Yes []No
If yes,
(ii) Avg. length of area to be filled: 250 If
(iii) Avg. width of area to be filled: 200 If
(iv) Purpose of fill: Fill will be placed within uplands within
the Stream 1 Project Area & Stream 3 Project Area in
order to raise grades to match surrounding uplands and
create a gentle slope to facilitate management of
vegetation at low heights as required by the FAA.
(i) Will the placement of the proposed bridge or culvert result in any
fill (other than excavated material described in Item d above) to
be placed within coastal wetlands/marsh (CW), submerged
aquatic vegetation (SAV), shell bottom (SB), or other wetlands
(WL)? If any boxes are checked, provide the number of square
feet affected.
❑CW ❑SAV ❑SB
®WL Wetland C - non -tidal 404 wetland ❑
None
(ii) Describe the purpose of the excavation in these areas:
3,206 sf of permanent wetland impacts - A 24"
stormwater drainage pipe will be placed within Wetland
C to exend the existing stormwater drainage pipe, and
the remainder of Wetland C will be filled in order to
eliminate wildlife habitat as required by the FAA.
252-808-2808 :: 1-888-4RCOAST :: www.nccoastalmanagement.net revised: 10/26/06

Form DCM MP -5 (Bridges and Culverts, Page 4 of 4)
a. Will the proposed project require the relocation of any existing b. Will the proposed project require the construction of any temporary
utility lines? ❑Yes ®No detour structures? ❑Yes ®No
If yes, explain: If yes, explain:
If this portion of the proposed project has already received
approval from local authorities, please attach a copy of the
approval or certification.
< Form continues on back>
c. Will the proposed project require any work channels? d. How will excavated or fill material be kept on site and erosion
❑Yes ®No controlled?
If yes, complete Form DCM-MP-2. Sediment and erosion control measures will consist of
installation of silt fencing around all disturbed areas.
Graded areas will be covered with live sod to provide
permanent stabilization. Work will be completed in the
dry by diverting flow around the project area using
coffer dams and pumping the water around project area
(see Project Narrative for more information).
e. What type of construction equipment will be used (for example,
dragline, backhoe, or hydraulic dredge)?
Excavator, dump trucks, bull dozer
g. Will the placement of the proposed bridge or culvert require any
shoreline stabilization? ❑Yes ®No
If yes, complete form MP -2, Section 3 for Shoreline
Stabilization only.
f. Will wetlands be crossed in transporting equipment to project site?
❑Yes ®No
If yes, explain steps that will be taken to avoid or minimize
environmental impacts.
wr �nr��hcfir,n ✓ -ren'I' 111dr
05/09/18 Applicant Nam_e_^
Date
Applicant Si ature
ILM Wildlife Mitigation Project To Remove Wet Detention Basins
and other Stormwater Improvements RECEIVED
Project Name
MAY 10 2018
Wilmington Airport Authority
252-808-2808 :: 1-888-4RCOAST :: www.nccoastaimanagement.net DC+ rse :10/26/06

IG

LYI�^N(' 24'- RCP -'�/-
LEGEND - PROPOSED IMPACTS
PROPOSED JUNCTION BOX WITH
MANHOLE FRAME AND COVER
RIM 11.50
24" INV IN 2.80
24" INV OUT Zj80
HEAD WALL
FRAME: 6.65
E 24" RCP2.90
IMPACT #1A B
PERMANENT 404 STREAM IMPACT
262 LINEAR FEET
(3,228 SF)L04
v
EX STING 3i,'" RCP
WING WALL =�
FRAME: 5.43
I.E : 30" RCP: 0.81
OD
VOID
BOO ' 1
IMPACT #1B
PERMANENT NAVIGABLE WATERS IMPACT
30 LINEAR FEET oo>
(465 SF)
IMPACT #2
PERMANENT WETLAND IMPACT
3, 206 SF
(0.07 AC)
ry
0
PROPOSED 168 LF 24" ALUMINUM PIPE TO
CONNECT TO PROPOSED 48" ALUMINUM PIPE
0
o�
LIMITS OF DISTURBANCE (LOD) 4
PROPOSED FILL AREA % ppb
FILL VOLUME = 4600 CY
x�--- X PROPOSED 48"
TALBERT & BRIGHT
ENGINEERING & PLANNING CONSULTANTS
4810 SHELLEY DRIVE WILMINGTON, NC 28405
FAX: [phone] PHONE: [phone]
NC LICENSE NO. C-0713
ALUMINUM ENDWALL 1
INV 0.00'
NHWL OF NAVIGABLE WATERS J `
PROPOSED RIP RAP
OUTLET PROTECTION
ELECTRIC VAULT
CONCRETE BOX
A
PROPOSED JUNCTION BOX WITH
MANHOLE FRAME AND COVER
RIM 12.00
30" INV IN 0.81
48" INV OUT 0.81
PROPOSED 245 LF 48"
ALUMINUM PIPE TO
CONNECT TO NEW 48"
ALUMINUM HEADWALL
16'
PROPOSED
ENDWALL AND
WINGWALLS
8' 24'
NCDOT CLASS I RIP RAP
PROPOSED NHWL
GRADE ELEV 3.0
NATURAL
GRADE
T=15" LAYER OF
FILTER FABRIC
9.0 f —17 NORMAL HIGH WATER OF STREAM
� r
8.0 0
PROPOSED 48" X 24" WYE AND
30" MANHOLE ACCESS RISER
RIM 7.30
24" INV IN 1.20
48" INV IN 0.20
48" INV OUT 0.20
—7.0
6.0
XX Y'x 30' CAMA AEC
p0�
A PROPOSED 8' CHAIN LINK FENCE
BEHIND NEW ENDWALL
WILMINGTON INTERNATIONAL AIRPORT
WILDLIFE MITIGATION PROJECT TO REMOVE WET DETENTION BASINS
AND OTHER STORMWATER IMPROVEMENTS
SCALE: 1"=50'
NCDOT CLASS I RIP RAP
T = 15"
A = 28 SQUARE YARDS
V = 12 CUBIC YARDS
RIP RAP OUTLET PROTECTION
NOT TO SCALE
NOTE: SEE FIGURE 3 FOR SECTION VIEWS
FIGURE 2
STREAM 1 IMPACTS
PLAN VIEW
MAY 9, 2018

15
10
5
0
-5
PROPOSED
JUNCTION BOX
PROPOSED 48" X 24" A
\ PROPOSED 30" MANHOLE ACCESS, F
\ GRADE
1
1
I
I PROPOSED 48"
I ALUMINUM PIPE
I
I I
EXISTING
PIPE I / \ / : \ / / _ _ TO SMITH
CREEK
EXISTING —'
GRADE PROPOSED RIP RAP
OUTLET PROTECTION
Qo _ r7 O co ,., �D r- Lo N 00 Qo
00 O N Cfl m
1+00 2+00 3+00
STREAM 1 IMPACT
SECTION A -A
TALBERT
& BRIGHT
LNGINELRING & PLANNING
CONSULTANTS
4810 SHELLEY DRIVE
WILMINGTON, NC 28405
FAX: [phone]
PHONE: [phone]
NC LICENSE NO. C-0713
EMAIL: TBIILM®TBIILM.COM
15
YE AND
ISER
10
PROPOSED
48" ALUMINUM
ENDWALL
INV 0.00
5
NORMAL HIGH
WATER
ELEV 3.0
-5
15
10
5
0
-5
I
PROPOSED
GRADE
f
\ I
EXISTING
\
GRADE
PROPOSED
24"
ALUMINUM
PIPE
STREAM 1
PROPOSED
48"
ALUMINUM
PIPE
-� -
00
Co
r`
00
00
00 _
Ln
N
-
00.:.
O
co
m
00
0
I
06
00
WILMINGTON INTERNATIONAL AIRPORT
WILDLIFE MITIGATION PROJECT TO REMOVE WET DETENTION BASINS
AND OTHER STORMWATER IMPROVEMENTS
1+00 2+00
STREAM 1 IMPACT
SECTION B -B
SCALE: 1"=50'
FIGURE 3
STREAM 1 IMPACTS
SECTION VIEWS
15
10
5
0
-5
MAY 9, 2018

1,0
O
I EDGE OF ASPHALT
PAVEMENT
(TAXIWAY -"B")
OXO
O/
PROPOSED 30" MANHOLE ACCESS
RISERS (3) WITH FRAME AND GRATE
NORMAL HIGH WATER OF STREAM
PROPOSED FILL AREA WITHIN
LIMITS OF DISTURBANCE
FILL VOLUME = 1700 CY
TALBERT
& BRIGHT
ENGINEERING & PLANNING
CONSL LTANTS
4810 SHELLEY DRIVE
WILMINGTON, NC 28405
FAX: [phone]
PHONE. [phone]
NC LICENSE NO. C-0713
EMAIL: TBIILM®TBIILM.COM
/ i- PROPOSED 196 LF TRIPLE 72" ALUMINUM PIPE
END 60" RCF
.E.: 3.86
0 0
,moo•
11 �
6.1100
PROPOSED 30"
MANHOLE ACCESS
RISERS (3) WITH
FRAME AND GRATE
END 60" HDDF
CONNECT EXISTING 42"
RCP TO NEW 42"
ALUMINUM STUB OUT
FROM 72" ALUMINUM PIPE
NOTE: SEE FIGURE 5 FOR SECTION VIEWS
WILMINGTON INTERNATIONAL AIRPORT
WILDLIFE MITIGATION PROJECT TO REMOVE WET DETENTION BASINS
AND OTHER STORMWATER IMPROVEMENTS
SCALE: 1"=50'
CONNECT EXISTING 36" RCP TO
NEW 36" ALUMINUM STUB OUT
FROM 72" ALUMINUM PIPE
6x9
FIGURE 4
STREAM 3 IMPACTS
PLAN VIEW
MAY 9, 2018

20
18
16
14
12
10
8
6
4
2
0
2+50 3+00 3+50 4+00 4+50 5+00 5+50
STREAM 3 IMPACT
SECTION A -A
TALBERT & BRIGHT
ENGINEERING & PLANNING CONSULTANTS
4810 SHELLEY DRIVE WILMINGTON, NC 28405
FAX: [phone] PHONE: [phone]
NC LICENSE NO. C-0713 EMAIL: TBlILM
20
18
16
14
12
10
8
6
4
2
0
14
12
10
8
6
4
2
0+00 0+50 1+00 1+50 2+00 2+50
WILMINGTON INTERNATIONAL AIRPORT
WILDLIFE MITIGATION PROJECT TO REMOVE WET DETENTION BASINS
AND OTHER STORMWATER IMPROVEMENTS
STREAM 3 IMPACT
SECTION 13-13
SCALE: 1"=50'
FIGURE 5
STREAM 3 IMPACTS
SECTION VIEWS
14
12
10
8
6
4
2
MAY 9, 2018
PROPOSED
GRADE
I
0 3 fA
EXISTING
PROPOSEID TRIPLIL
72? ALUMINUM PIPE
STREAM
00 M
(D
00 0
c,,l oc)
CIO uo
�—o 00
N
(D (N
c0
QO
Ln r-
00 r�
r,-)
0
o7:
o
0+00 0+50 1+00 1+50 2+00 2+50
WILMINGTON INTERNATIONAL AIRPORT
WILDLIFE MITIGATION PROJECT TO REMOVE WET DETENTION BASINS
AND OTHER STORMWATER IMPROVEMENTS
STREAM 3 IMPACT
SECTION 13-13
SCALE: 1"=50'
FIGURE 5
STREAM 3 IMPACTS
SECTION VIEWS
14
12
10
8
6
4
2
MAY 9, 2018

40 WithersRavenel
AERIAL PHOTO & DELINEATION EXHIBIT

GRAPHIC SCALE
0 1100 1 000
4.
1 inch = 1000 ft.
p r^z-
J
-
f r ;.
�
* r
y
AIRPORT BLVD - p
r �
IP `
WILDLIFE HAZARD MITIGATION PROJECT I I ;!WithersREngineers)P�nneav aveen
nel
FOR WET DETENTION BASINS & OPEN DITCHES AERIAL EXHIBIT - 2013
MIMINciON NwwunNOVIR(OUNTY NORIMAROiNA

GRAPHIC SCALE
NOTES: 05/09/18
1) AND DELIENATION AND JURISDICTIONAL STATUS FIELD
n �s 150
VERIFIED BY KYLE DAHL WITH USACE ON 03/14/17 AND LIZ HAIR
�♦ .t,4,
..
WITH USACE ON 01/19/18.
1 inch = ISO ft.
2) WETLAND LIMITS ARE APPROXIMATE, BASED ON GPS LOCATION OF
* r
WETLAND FLAGS.
,
—4,
7
+
IMPACT 2*-
WETLANDACI
P 11A
STREAM 1
SECTION404/10 JURISDICTIONAL
404/401 JURISDICTIONAL
TIDAL INLAND WATER
NON -TIDAL
..
30'CAMA AEC
NAVIGABLE WATER
SUBJECT TO CAMA JURISDICTION
SECURITY
FENCE
STREAM 1 IS A TIDAL INLAND WATER. PER COORDINATION WITH
NCDCM, CAMA JURISDICTION STOPS AT THE PERIMETER SECURITY �+, _:
FENCE WHERE NAVIGABILITY TERMINATES. THEREFORE, THE 30'
+�
AEC IS OFFSET FROM THE END OF CAMA JURISDICTION AT THE
"
PERIMETER SECURITY FENCE.
WILDLIFE HAZARD MITIGATION PROJECT
WETLAND LOCATION EXHIBIT 110 WithersRavenel
FOR WET DETENTION BASINS & OPEN DITCHES
STREAM 1 PROJECT AREA - IMPACTS 1 & 2 10 Engineers IPlannerslSurveyors
WIIMINGTON NFW HANOVER COUNTY NORTH CAROLINA

GRAPHIC SCALE
0 75 150
1 inch = 150 ft.
Jt
WILDLIFE HAZARD MITIGATION PROJECT
FOR WET DETENTION BASINS & OPEN DITCHES
WILMINGTON NFW HANOVER COUNTY NORTH CAROL INA
NOTES:
1) WETLAND DELIENATION AND JURISDICTIONAL STATUS FIELD
VERIFIED BY KYLE DAHL WITH USACE ON 03/14/17 AND LIZ HAIR
WITH USACE ON 01/19/18.
2) WETLAND LIMITS ARE APPROXIMATE, BASED ON GPS LOCATION OF
WETLAND FLAGS.
WETLAND LOCATION EXHIBIT WithersRavenel
STREAM 3 PROJECT AREA - IMPACT 3 Engineers IPlannersISurveyors

40 WithersRavenet
No
NEW HANOVER CO.
SOIL SURVEY

I - Catfish 18 a vii C Dock Creek
+ Creek
4 — _
18 a vi
Indian Creek 4 h x 18 a vii B Ness Creek
18 a v B Tommer Creek, Northernmost entrance '
R 18 a v ATommer Creek, Southernmost entrance
Cartwheel Creek 4 h ix 18 a vii A Smiths Creek
ra ... 1 y9a""Y N • F I �� '.t-�'�`.—r - _�� " / �' '1 v r �'�
:`l y 18 a vii Northeast Cape Fear River
Sturgeon Creek 4 h viii C
Alligator Creek 4 h viii A III `
` f Northernmost Cape Fear River
I entrance
— Alligator Creek 4 h viii A I o�
Southernmost
entrance
18 a iv Greenfield Lake Outlet
p � f
Jakeys Creek 4 h v B
,�• Brunswick River 4 h viii
' Mallory Creek 4 h vii
CSS . 71
n u:7
� -
18 a iii Barnards Creek =
•+ Town Creek 4 h vi
odds_ Creek -
!`� 18aii ,
L ` ' a
~ Sandhill Creek 4 h v
.h f
%Lords Creek
1� 1
J
Lilliput Creek 4 h iv l a-
t
I This map was produced for illustrative purposes as a _ t
general guide to assist the public. Informational data
used for this map were collected from federal, state,
county, and private organizations. While every effort
7 is made to keep this map accurate and up-to-date, ^"
it is not intended to replace any official source. 4
Under no circumstances shall the State of North
Carolina be liable for any actions taken or omissions ` t ` it
made from reliance on any information contained herein
from whatever source nor shall the State be liable forany other consequences from any such reliance.
r
Military Danger Boundary
Zones and DescriptiveBoundaries for Descriptive Boundaries for
Restricted Areas Q MDZRA Coastal -Joint -Inland Waters Map Datum: NAD83
O LaULong point Coastal -Joint -Inland Waters Map Projection: NC State Plane
(15A NCAC 03Q .0202) Map Date: May 1, 2015 `
^/ Boundary 1:143790 if
NB Coastal Waters 1000 0 1000 2000 Yards
/V Joint Waters
locator map /V Inland Waters Map 24 0.8 '0 0.8 1.6 Miles

GRAPHIC SCALE
NOTES:
1) WETLAND DELIENATION AND JURISDICTIONAL STATUS FIELD VERIFIED BY KYLE DAHL
0 100 200
WITH USACE ON 03/14/17 AND LIZ HAIR WITH USACE ON 01/19/18.
2) WETLAND LIMITS ARE APPROXIMATE,
BASED ON GPS LOCATION OF WETLAND FLAGS.
1 inch = 200 ft.
AIV,
P
y
y
TAXIVVA
-
Y
WILDLIFE HAZARD MITIGATION PROJECT
WETLAND LOCATION EXHIBIT
--------
------
40 WithersRavenel
FOR WET DETENTION BASINS & OPEN DITCHES
STREAM 3 PROJECT AREA
1p Engineers l Planners I Surveyors
WILMINGTON NFW HANOVER COUNTY NORTH CAROLINA

1/ Wither-sRavenel
No
USGS QUADRANGLE

GRAPHIC SCALE
0 500 1000
1 inch = 1000 ft.
HEWLETT DR
ORT BLVD
NT
�Y.
� p
/STREAM 3 P J T AREA I
Wilmington /
1 A 3
International Ayl>-port �. v
STREAM 1 PROJEC
IMPACT 1 & 2
1
17-
-----**tP()RT
PROPERTY 0
----2�OUNDARY
CONTROL TO
pR
1
EA
y
, i /NFA0
Cy -
f
smith C,
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