20170798 Ver 1_401 Application_20170629

%0 WithersRavenel
1/ ()l1r PeOPIE
219 Station Road, Suite 101
Wilmington, North Carolina 28405
t: 910.256.9277 1 f: 910.256.2584
TO: Mr rlivicinn of Wntor Pocni irrac - d01 WPtlnnrlc I ]nit
512 N. Salisbury Street; 91h Floor
Raleigh, NC27604
Letter of Transmittal
-aft K11 I
,$IL"M
06/27/17 • : • 03110288.30
• Ms. Karen Higgins
Wildlife Hazard Mitigation for Wet Detention
Basins and Open Ditches - Wilmington, New Hanover
NWP 39 PCN Submittal
WE ARE SENDING YOU ❑x Attached
❑ Under Separate Cover via
2
0 1 7 0 7 8 g
THE FOLLOWING ITEMS ❑ Shop Drawings
❑ Prints ❑ Plans
❑ Samples
❑ Specifications
❑ Copy of Letter
❑ Change Order ❑ Diskette
❑ Other
06/26/17
THESE ARE TRANSMITTED as checked i,-!,,_„/
I] For approval ❑ Approved as submitted ❑ Resubmit copies for approval
❑ For your use ❑ Approved as noted ❑ Submit copies for distribution
❑ As requested ❑ Returned for corrections ❑ Return corrected prints
❑ For review and comment ❑ Other
1:1 FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US
REMARKS:
COPY TO: File
SIGNED: Troy Beasley
If enclosures are not as noted, kindly notify us at once.
DESCRIPTION
NWP 39 PCN
COPIESDATE
NO.
4
06/26/17
03110288.30
1
06/26/17
03110288.30
Check for $570 application fee
1
06/26/17
03110288.30
CD of PCN
THESE ARE TRANSMITTED as checked i,-!,,_„/
I] For approval ❑ Approved as submitted ❑ Resubmit copies for approval
❑ For your use ❑ Approved as noted ❑ Submit copies for distribution
❑ As requested ❑ Returned for corrections ❑ Return corrected prints
❑ For review and comment ❑ Other
1:1 FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US
REMARKS:
COPY TO: File
SIGNED: Troy Beasley
If enclosures are not as noted, kindly notify us at once.

1 • 3
40 WithersRavenel
June 26, 2017
US Army Corps of Engineers
Wilmington Regulatory Field Office
Mr. Kyle Dahl
69 Darlington Avenue
Wilmington, NC 28403
NC -Division of Water Resources
401 & Buffer Permitting Unit
Ms. Karen Higgins
1617 Mail Service Center
Raleigh, NC 27699
Re: ILM Wildlife Hazard Mitigation for Wet Detention Basins and Open Di
Wilmington, New Hanover County
NWP 39 PCN Submittal
WR Project #03110288.30
Dear Mr. Dahl and Ms. Higgins,
CEIV
JUN 2 9 2017
On behalf of New Hanover County Airport Authority, we are requesting authorization from the
USACE to use NWP 39 for 0.30 acres of permanent wetland impacts and 164 If of permanent
stream impacts required to meet FAA safety requirements at the Wilmington International Airport
(ILM). We are also requesting a 401 WQC from NCDWR for the above referenced impacts.
The project consists of three separate project areas totaling ±10 acres in size, located within the
Runway Safety Area (RSA) of Runway 6 and Runway 35 at the Wilmington International Airport in
Wilmington, New Hanover County, NC. The project areas drain to Smith Creek, which is located
within the Cape Fear River Basin (HUC 03030007). The Water Quality Classification for Smith
Creek is: C;SW, and the Stream Index Number is: 18-74-63.
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 Runway
Safety Area (RSA) to prevent wildlife strikes. The proposed project consists of filling two existing
non -jurisdictional stormwater ponds (Ponds A & B), filling and grading Wetland A, and piping
Stream 2 to beyond the perimeter fence. The FAA has identified these areas as wildlife hazards
within the RSA that must be eliminated to meet FAA requirements and improve aircraft safety.
Wetland A is an herbaceous wetland below the outfall of Pond A, which has formed as a result of
poor drainage due to sediment buildup downstream causing water to be impounded. Currently,
Wetland A holds standing water for weeks following a rain event, which creates wading bird habitat
immediately adjacent to the end of Runway 6. The bird attracting habitat within Wetland A and
Pond A is a major safety concern due to the increased likelihood of a bird strike for approaching and
departing aircraft. Wetland A, along with Pond A, will be filled and graded to provide drainage
sufficient drainage to prevent standing water and meet the FAA requirement of no standing water
longer than 24 hours following a rain event.

I LM Wild I if e Hazard Mitigation Project for Wet Detention ,/ WithersRavenel
Basins and Open Ditches ,/
WR Proj #03110288.30
Stream 2 is a perennial stream which is fed by the airport's stormwater drainage system.
Approximately 102 If of the upper reach of Stream 2 was historically lined within concrete to
prevent erosion, which effectively eliminated the functional value of this section. Approximately
164 If of Stream 2 will captured in a storm drainage pipe to eliminate the wildlife habitat within the
RSA for Runway 35. The existing storm drainage pipe will be extended tojust beyond the perimeter
fence.
Independent Use and Utility
ILM has ten projects that received 404 authorization dating back to 1999. The proposed project
has independent use and utility from previously permitted projects at ILM for numerous reasons.
Specifically, the independent use and utility for this project is supported by the following:
• The project will be funded with a fiscal year 2017 grant from the FAA that will be issued specifically
for this project and only for this project.
• The project location/elements are physically disconnected from any other airport projects for
which a 404 permit has been issued in the past. The project locations are 1.2 miles (Ditch 2) and 1.7
miles (Pond A wetlands) from the Runway 24 Wildlife Hazard & NAVAID Critical Area Mitigation
(#SAW -2011-00455) project.
• While the proposed project and the completed Runway 24 Wildlife Hazard & NAVAID Critical Area
Mitigation (#SAW -2011-00455) project have common terminology in their description (i.e.,
"Wildlife Hazard Mitigation"). This terminology is indicative of an FAA funding prioritization
category for a'type' of project and does not indicate that the subject project is a continuation of the
Runway 24 Wildlife Hazard & NAVAID Critical Area Mitigation project.
• The project is being publicly bid and a construction contract will be awarded as a'standalone'
project.
Project History
The Corps issued a JD for Pond A, Pond B and Wetland A (SAW -2016-00075) on 02/25/16 in
association with the ILM Airline Terminal Improvements project. A copy of the JD has been
provided as an Appendix.
Kyle Dahl with the Corps field verified the delineation and jurisdictional status of Stream 2 during
a site visit on 03/14/17. WR requests that the Preliminary JD be issued in conjunction with issuance
of the NWP 39.
Proposed Impacts
The proposed impacts consist of 0.30 acres of permanent wetland impacts and 164 If of permanent
stream impacts.
The proposed 0.30 acres of permanent wetland impacts (Impact 1) will occur as a result of fi Iling and
grading Wetland A to provide adequate drainage to minimize standing water to less than the 24
hours following a rain event in order to meet FAA requirements. The removal of Wetland A is
necessary to eliminate the wildlife habitat, most importantly waterfowl habitat, from within the
RSA of Runway 6.
Page 2 of 4

ILM Wildlife Hazard Mitigation Project for Wet Detention %400 Withers Rave n e l
Basins and Open Ditches
WR Proj #03110288.30
The proposed 164 If of permanent stream impacts (Impact 2) will occur as a result of capturing the
flow of Stream 2 within a storm drainage pipe to beyond the perimeter fence to eliminate wildlife
habitat within the RSA of Runway 35.
Avoidance and Minimization
The proposed impacts are necessary to remove wildlife habitat within the RSA 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 stream, impacts could not be avoided
or minimized.
It should be noted that wetland and stream proposed to be impacted are highly degraded as a result
of historic activities at I LM. Specifically, Stream 2 has been historically channelized, and the entire
drainage area has been piped and filled. The hydrologic source for Stream 2 consists entirely of the
ILM stormwater drainage system. Also, the upper 102 If of Stream 2 (Impact 2A) was historically
lined with concrete to prevent erosion, which effectively eliminated the functional value of this
segment.
Wetland A is an herbaceous wetland that has formed within a drainage swale due to sediment
buildup causing inundation of the area. Wetland A is regularly mowed, and the soils are highly
compacted. WR completed an NCWAM assessment of Wetland A, which determined that the
Wetland Rating for Wetland A was "Medium". It should be noted that the NCWAM was completed
with the "Wetland Type" being "Freshwater Marsh", which is the current condition, rather than
"Headwater Forest", which would have been the wetland type found within the airport prior to
clearing. Ultimately, this is a created wetland as a result of poor maintenance of the stormwater
drainage system, which has very little vegetative diversity and little to no functional value.
Secondary impacts to downstream waters will be minimized by installation of erosion and sediment
control BM Ps prior to construction to prevent sediment from escaping into downstream waters and
wetlands.
Mitigation
Since the proposed project does not avoid and minimize impacts to jurisdictional waters and
wetlands, compensatory mitigation is proposed.
Wetland Mitigation
Due to the "Medium" functional value of Wetland A, as well as the fact that it is a wetland created
due to poor maintenance of the stormwater drainage system, the applicant proposes to mitigate for
the 0.30 acres of permanent wetland impacts (Wetland 1) at a 1:1 mitigation ratio. This results in
the purchase of 0.30 acres of non -riparian wetland mitigation, which will be purchased from the
Northeast Cape Fear Umbrella Mitigation Bank. A copy of the letter of availability has been
provided as an Appendix.
Page 3 of 4

ILM Wildlife Hazard Mitigation Project for Wet Detention
Basins and Open Ditches
WR Proj #03110288.30
Stream Mitigation
100 WithersRavenel
Of the proposed 164 If of permanent stream impacts,102 If of Stream 2 (Impact 2A) was historically
lined with concrete, which eliminated the functional value. Therefore, the applicant does not
propose mitigation for Impact 2A.
The applicant proposes to mitigate for the 62 If of permanent stream impacts (Impact 2B) at a 2:1
ratio, resulting in the purchase of 124 If of stream mitigation. The mitigation will be purchased from
the Northeast Cape Fear Umbrella Mitigation Bank, and a copy of the letter of availability has been
provided as an Appendix.
The current request is for 0.30 acres of permanent wetland impacts, 164 If of permanent stream
impacts (see the attached maps and PCN for details).
Please feel free to call if you have questions or require additional information.
Sincerely,
Troy Beasley
Senior Environmental Scientist
Attachments:
• PCN Form
• Agent Authorization
• Wetland Location Exhibit
• USGS Quad
• New Hanover County Soil Survey
• JD for ILM Airline Terminal Improvement Project (SAW -2016-00075)
• NCWAM Form for Wetland A
• NE Cape Fear Umbrella Mitigation Bank Letter of Availability
• SHPO Project Review Letter
• USFWS Concurrence Letter
• Impact Exhibits
Page 4 of 4

Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Page 1 of 12
PCN Form — Version 1.3 December 10, 2008 Version
Pre -Construction Notification PCN Form
A. Applicant Information
1.
Processing
1a.
Type(s) of approval sought from the
Corps:
®Section 404 Permit El Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: 39 or General Permit (GP) number:
1c.
Has the NWP or GP number been verified by the Corps?
® Yes
❑ No
1d.
Type(s) of approval sought from the DWQ (check all that apply)
® 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization
1e. Is this notification solely for the record
because written approval is not required?
For the record only for DWQ 401
Certification:
❑ Yes ® No
For the record only for Corps Permit:
❑ Yes ® No
1f.
Is payment into a mitigation bank or in -lieu fee program proposed for mitigation
of impacts? If so, attach the acceptance letter from mitigation bank or in -lieu
fee program.
® Yes
❑ No
1 g.
Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
® Yes
❑ No
1 h.
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes
® No
2.
Project Information
2a.
Name of project:
ILM Wildlife Hazard Mitigation Project for Wet Detention Basins and Open Ditches
2b.
County:
New Hanover
2c.
Nearest municipality / town:
Wilmington
2d. Subdivision name:
2e.
NCDOT only, T.I.P. or state
project no:
3.
Owner Information
3a.
Name(s) on Recorded Deed:
New Hanover County
3b.
Deed Book and Page No.
Book: 0817; Page: 0868
3c.
Responsible Party (for LLC if
applicable):
3d.
Street address:
230 Government Drive
3e.
City, state, zip:
Wilmington, NC 28403
3f.
Telephone no.:
3g.
Fax no.:
3h.
Email address:
Page 1 of 12
PCN Form — Version 1.3 December 10, 2008 Version

4.
Applicant Information (if different from owner)
4a.
Applicant is:
❑ Agent ® Other, specify: Wilmington Airport Authority
4b.
Name:
Julie Wilsey — Airport Director
4c.
Business name
(if applicable):
Wilmington Airport Authority
4d.
Street address:
1740 Airport Blvd, Suite 12
4e.
City, state, zip:
Wilmington, NC 28405
4f.
Telephone no.:
910-341-4333
4g.
Fax no.:
4h.
Email address:
[e-mail]
5.
Agent/Consultant Information (if applicable)
5a.
Name:
Troy Beasley
5b.
Business name
(if applicable):
Withers and Ravenel
5c.
Street address:
219 Station Road, Suite 101
5d.
City, state, zip:
Wilmington, NC 28405
5e.
Telephone no.:
910-256-9277
5f.
Fax no.:
910-256-2584
5g.
Email address:
[e-mail]
Page 2 of 12
PCN Form — Version 1.3 December 10, 2008 Version

B.
Project Information and Prior Project History
1.
Property Identification
1a.
Property identification no. (tax PIN or parcel ID):
PARID #R04200-001-025-000
1 b.
Site coordinates (in decimal degrees):
Latitude: 34.263104°N Longitude: - 77.912122°W
(DD.DDDDDD) (-DD.DDDDDD)
1 c.
Property size:
Entire Airport - ±1,338.95 acres
Project Area - ±10 acres
2.
Surface Waters
2a.
Name of nearest body of water (stream, river, etc.) to
Smith Creek (Stream Index: 18-74-63)
proposed project:
2b. Water Quality Classification of nearest receiving water:
C;SW
2c.
River basin:
Cape Fear (HUC: 03030007)
3.
Project Description
3a.
Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
The project area currently consists of two non -jurisdictional stormwater ponds (Ponds A & B), an herbaceous wetland
(Wetland A) and an intermittent stream, which are located within the regularly mowed/maintained areas within the
Runway Safety Area (RSA) associated with Runways 6 & 35. The general land use in the vicinity consists of residential,
commercial and agricultural land uses, as well as undeveloped woodlands.
3b.
List the total estimated acreage of all existing wetlands on the property:
±0.30 acres of wetlands (Wetland A) within the project area.
3c.
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
±162 If of intermittent stream (Stream 2) within the project area.
3d.
Explain the purpose of the proposed project:
The purpose of the proposed project is to meet FAA requirements by mitigating public safety hazards associated within
aircraft travel by eliminating wildlife habitat hazards within the Runway Safety Area (RSA) to prevent wildlife strikes. The
proposed project consists of filling two existing non -jurisdictional stormwater ponds (Ponds A & B), filling and grading
Wetland A, and piping Stream 2 to beyond the perimeter fence. The FAA has identified these areas as wildlife hazards
within the RSA that must be eliminated to meet FAA requirements and improve aircraft safety.
3e.
Describe the overall project in detail, including the type of equipment to be used:
Wetland A is an herbaceous wetland below the outfall of Pond A, which has formed as a result of poor drainage due to
sediment buildup downstream causing water to be impounded. Currently, Wetland A holds standing water for weeks
following a rain event, which creates wading bird habitat immediately adjacent to the end of Runway 6. The bird attracting
habitat within Wetland A and Pond A is a major safety concern due to the increased likelihood of a bird strike for
approaching and departing aircraft. Wetland A, along with Pond A, will be filled and graded to provide drainage sufficient
drainage to prevent standing water and meet the FAA requirement of no standing water longer than 24 hours following a
rain event.
Stream 2 is a perennial stream which is fed by the airport's stormwater drainage system. Approximately 102 If of the
upper reach of Stream 2 was historically lined within concrete to prevent erosion, which effectively eliminated the
functional value of this section. Approximately 164 If of Stream 2 will captured in a storm drainage pipe to eliminate the
wildlife habitat within the RSA for Runway 35. The existing storm drainage pipe will be extended to just beyond the
perimeter fence.
Standard commercial construction equipment and techniques will be used to construct the project.
Page 3 of 12
PCN Form — Version 1.3 December 10, 2008 Version

4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
®Yes EJ No EJ Unknown
project (including all prior phases) in the past?
Comments:
4b. If the Corps made the jurisdictional determination, what type
®Preliminary ®Final
of determination was made?
4c. If yes, who delineated the jurisdictional areas?
Agency/Consultant Company: WithersRavenel
Name (if known): Troy Beasley
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
The Corps issued a JD for Pond A, Pond B and Wetland A (SAW -2016-00075) on 02/25/16 in association with the ILM
Airline Terminal Improvements project. A copy of the JD has been provided as an Appendix.
Kyle Dahl with the Corps field verified the delineation and jurisdictional status of Stream 2 during a site visit on 03/14/17.
WR requests that the Preliminary JD be issued in conjunction with issuance of the NWP 39.
5. Project History
5a. Have permits or certifications been requested or obtained for
❑ Yes ® No ❑ Unknown
this project (including all prior phases) in the past?
5b. If yes, explain in detail according to "help file" instructions.
Previous 404 permits have been issued for various projects at ILM. However, this project has independent use and utility.
6. Future Project Plans
6a. Is this a phased project?
❑ Yes ® No
6b. If yes, explain.
Page 4 of 12
PCN Form — Version 1.3 December 10, 2008 Version

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
® Wetlands ® Streams - tributaries ❑ Buffers
❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a.
2b.
2c.
2d.
2e.
2f.
Wetland impact
Type of jurisdiction
number -
Type of impact
Type of wetland
Forested
(Corps - 404, 10
Area of impact
Permanent (P) or
(if known)
DWQ - non -404, other)
(acres)
T
-Temporary
Impact 1
® P ElT
Grading
Herbaceous
F] Yes
®No
® Corps
® DWQ
0.30 ac
2g. Total wetland impacts
0.30 ac
2h. Comments:
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a.
3b.
3c.
3d.
3e.
3f.
3g.
Stream impact
Type of impact
Stream name
Perennial
Type of jurisdiction
Average
Impact
number -
(PER) or
(Corps - 404, 10
stream
length
Permanent (P) or
intermittent
DWQ - non -404,
width
(linear
Temporary (T)
(INT)?
other)
(feet)
feet)
Impact 2A
Extension of
existing Storm
UT to Smith Creek
® PER
® Corps
7'
102 If
®P ❑ T
EJ INT
®DWQ
pipe
Impact 2B
Extension of
® PER
® Corps
®P [:IT
existing storm
UT to Smith Creek
❑INT
®DWQ
7'
62 If
pipe
3h. Total stream and tributary impacts
164 If
3i. Comments: Proposed stream impacts are necessary to
4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individually list all open water impacts below.
4a.
4b.
4c.
4d.
4e.
Open water
Name of waterbody
impact number -
(if applicable)
Type of impact
Waterbody type
Area of impact (acres)
Permanent (P) or
Temporary T
01 ❑P❑T
02 ❑P❑T
03 ❑P❑T
04 ❑P❑T
4f. Total open water impacts
4g. Comments:
5. Pond or Lake Construction
If pond or lake construction proposed, then complete the chart below.
Page 5 of 12
PCN Form - Version 1.3 December 10, 2008 Version

5a.
5b.
5c.
5d.
5e.
Wetland Impacts (acres)
Stream Impacts (feet)
Upland
Pond ID
Proposed use or purpose
(acres)
number
of pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
5f. Total
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If any impacts require mitigation, then you MUST fill out Section D of this form.
6a.
❑ Neuse ❑Tar -Pamlico El Other:
Project is in which protected basin?
❑ Catawba ❑ Randleman
6b.
6c.
6d.
6e.
6f.
6g.
Buffer impact
number –
Reason
Buffer
Zone 1 impact
Zone 2 impact
Permanent (P) or
for
Stream name
mitigation
(square feet)
(square feet)
T
impact
required?
—Temporary
B1 ❑P❑T
F1 Yes
❑ No
B2 []PRT
F1 Yes
❑ No
B3 ❑P❑T
F1 Yes
❑ No
6h. Total buffer impacts
6i. Comments:
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The proposed impacts are necessary to remove wildlife habitat within the RSA 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 stream, impacts could not be avoided or minimized.
It should be noted that wetland and stream proposed to be impacted are highly degraded as a result of historic activities at
ILM. Specifically, Stream 2 has been historically channelized, and the entire drainage area has been piped and filled. The
hydrologic source for Stream 2 consists entirely of the ILM stormwater drainage system. Also, the upper 102 If of Stream 2
(Impact 2A) was historically lined with concrete to prevent erosion, which effectively eliminated the functional value of this
segment.
Wetland A is an herbaceous wetland that has formed within a drainage swale due to sediment buildup causing inundation of
the area. Wetland A is regularly mowed, and the soils are highly compacted. WR completed an NCWAM assessment of
Wetland A, which determined that the Wetland Rating for Wetland A was "Medium". It should be noted that the NCWAM was
completed with the "Wetland Type" being "Freshwater Marsh", which is the current condition, rather than "Headwater Forest",
which would have been the wetland type found within the airport prior to clearing. Ultimately, this is a created wetland as a
result of poor maintenance of the stormwater drainage system, has very little vegetative diversity and minimal functional value.
Page 6 of 12
PCN Form – Version 1.3 December 10, 2008 Version

Page 7 of 12
PCN Form — Version 1.3 December 10, 2008 Version
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Secondary impacts to downstream waters will be minimized by installation of erosion and sediment control BMPs prior to
construction to prevent sediment from escaping into downstream waters and wetlands. Additionally, access during
construction will occur in high ground.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
® Yes ❑ No
impacts to Waters of the U.S. or Waters of the State?
2b. If yes, mitigation is required by (check all that apply):
❑ DWQ ® Corps
® Mitigation bank
2c. If yes, which mitigation option will be used for this
El Payment to in -lieu fee program
project?
❑ Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank: NE Cape Fear Umbrella Mitigation Bank
Quantity:
Type:
Wetland — 0.3 acres
3b. Credits Purchased (attach receipt and letter)
Non -Riparian
W
Wetland & Stream
Stream - ±124 If
3c. Comments: Mitigation is proposed at a 1:1 ratio for proposed wetland impacts and 2:1 ratio for proposed stream impacts.
Please note that stream mitigation is not proposed for Impact 2A (102 If), as the stream channel has been historically lined
with concrete, which removed the functional value of this section of Stream 2. Mitigation is proposed for Impact 2B (62 If),
which is not lined with concrete.
4. Complete if Making a Payment to In -lieu Fee Program
4a. Approval letter from in -lieu fee program is attached.
❑ Yes
4b. Stream mitigation requested:
linear feet
4c. If using stream mitigation, stream temperature:
❑ warm ❑ cool ❑cold
4d. Buffer mitigation requested (DWQ only):
square feet
4e. Riparian wetland mitigation requested:
acres
4f. Non -riparian wetland mitigation requested:
acres
4g. Coastal (tidal) wetland mitigation requested:
acres
4h. Comments:
5. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
Page 7 of 12
PCN Form — Version 1.3 December 10, 2008 Version

6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation?
❑ Yes ® No
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.
Zone
6c.
Reason for impact
6d.
Total impact
(square feet)
Multiplier
6e.
Required mitigation
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1.5
6f. Total buffer mitigation required:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in -lieu fee fund).
6h. Comments:
Page 8 of 12
PCN Form — Version 1.3 December 10, 2008 Version

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified
❑ Yes ® No
within one of the NC Riparian Buffer Protection Rules?
1 b. If yes, then is a diffuse flow plan included? If no, explain why.
El Yes El No
Comments:
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
N/A %
2b. Does this project require a Stormwater Management Plan?
❑ Yes ® No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why: The proposed project will not result in
additional impervious area and therefore does not require stormwater treatment.
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
❑ Certified Local Government
2e. Who will be responsible for the review of the Stormwater Management Plan?
❑ DWQ Stormwater Program
❑ DWQ 401 Unit
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project?
❑ Phase II
3b. Which of the following locally -implemented stormwater management programs
❑ NSW
❑ USMP
apply (check all that apply):
❑ Water Supply Watershed
❑ Other:
3c. Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
4. DWQ Stormwater Program Review
❑ Coastal counties
❑ HQW
4a. Which of the following state -implemented stormwater management programs apply
❑ ORW
(check all that apply):
❑ Session Law 2006-246
❑ Other:
4b. Has the approved Stormwater Management Plan with proof of approval been
attached?
❑ Yes ❑ No
5. DWQ 401 Unit Stormwater Review
5a. Does the Stormwater Management Plan meet the appropriate requirements?
❑ Yes ❑ No
5b. Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 9 of 12
PCN Form — Version 1.3 December 10, 2008 Version

F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the
® Yes ❑ No
use of public (federal/state) land?
1 b. If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State
® Yes ❑ No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c. If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
letter.)
❑ Yes ® No
Comments: A Documented Categorical Exclusion has been prepared and submitted
to the FAA for the proposed project, and will be issued by the FAA upon issuance of
the 404/401 permits.
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards,
❑ Yes ® No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after -the -fact permit application?
❑ Yes ❑ No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in
❑ Yes ® No
additional development, which could impact nearby downstream water quality?
3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy. If you answered "no," provide a short narrative description.
The project consists of eliminating existing wildlife habitat within the Runway Safety Area (RSA) in order to improve
aircraft safety, which will not be a catalyst for future development that could impact nearby downstream water quality.
4. Sewage Disposal (DWQ Requirement)
4a. Clearly detail the ultimate treatment methods and disposition (non -discharge or discharge) of wastewater generated from
the proposed project, or available capacity of the subject facility.
N/A — the project will not require sewage disposal.
Page 10 of 12
PCN Form — Version 1.3 December 10, 2008 Version

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or
® Yes ❑ No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act
® Yes ❑ No
impacts?
® Raleigh
5c. If yes, indicate the USFWS Field Office you have contacted.
❑ Asheville
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
WR conducted a presence/absence survey for the proposed project areas and determined that there were no federally
listed species, nor their potential habitat, within the project areas. The surveys were conducted in conjunction with the
ILM Terminal Improvement Project and the current project. WR submitted a report of their findings to the USFWS, and
they issued a response letter for both projects concurring that activities within these areas was not likely to adversely
affect federally listed threatened or endangered species, and requirements of section 7(a)(2) of the ESA has been
satisfied. Copy of the USFWS' concurrence letters have been provided as Appendices.
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ❑ No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
WR reviewed the NOAA Essential Fish Habitat online mapper, located at:
http://www.habitat.noaa.gov/protection/efh/efhmapper/index.htmi. The EFH mapper classifies the Cape Fear River,
located approximately 5 miles west of the proposed project, as Essential Fish Habitat. However, the project will have
sediment and erosion control measures in place to prevent sediment from escaping into downstream waters, and therefore
will not result in adverse impacts to Essential Fish Habitat within the Cape Fear River.
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
❑ Yes ® No
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
In a letter dated 02/17/17, SHPO specified that a review of the project had been conducted and they are not aware of any
historic resources which would be affected by the project, and SHPO has no comment on the project as proposed.
Therefore, the proposed project will not affect any historic or cultural resources. A copy of the SHPO letter has been
provided as an Appendix.
Page 1 1 of 12
PCN Form — Version 1.3 December 10, 2008 Version

8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA -designated 100 -year floodplain?
❑ Yes ® No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination? www.ncfloodmaas.com
Troy Beasley — Authorized Agent
WithersRavenel
l
06/26/17
Date
Applicant/Agent's Printed Name
Applicant/Agent's Signature
(Agent's signature is valid only if an authorization letter from the applicant
isprovided.)
Page 12 of 12
PCN Form — Version 1.3 December 10, 2008 Version

1% WithersRavenel
AGENT AUTHORIZATION

WithersRavenel
tipOur People. your Success.
ra-
The undersigned Owner Wilmington Airport Authority (Client) does hereby appoint
WithersRavenel. Inc. as his, her, or it's agent for the purpose of petitioning the appropriate
local, state and federal environmental regulatory agencies (US Army Corps of Engineers, NC
Division of Water Quality, NC Division of Coastal Management, local municipalities, etc.) for:
a) review and approval of the jurisdictional boundaries of onsite jurisdictional areas
(wetlands, surface waters, riparian buffers, etc.) and/or; b) preparation and submittal of
appropriate environmental permit applications/requests for projects at the Wilmington
International Airport (I LM).
The Client does hereby authorize that said agent has the authority to do the following acts
on behalf of the owner.
(1) To submit appropriate requests/applications and the required
supplemental materials;
(2) To attend meetings to give representation on behalf of the Client.
(3) To authorize access to subject property for the purpose of
environmental review by appropriate regulatory agencies.
This authorization shall continue in effect until completion of the contracted task or
termination by the Client.
Agent's Name, Address & Telephone:
WithersRavenel,
1410 Commonwealth Dr.. Suite 101
Wilmington, NC 28403
Tel ( 910) 256-9277
Date: 11 l d q 4
Signature of Client:
Sure 1�-
Mailing Addres§
LJIMIM Mc- a nil
City �} State Zip
Phone: -1 /6 3ql — g333/
Email: ILt1 rIye L, P A l

10
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;! WithersRavenel
Engineers I Planners I Surveyors
WILMINGTON MW HANOVER COL\ I Y NORTH CAROI INA

10 WithersRavenel
NEW HANOVER COUNTY
SOILSURVEY

%0 WithersRavenel
No -
JD FOR ILM AIRLINE TERMINAL
IMPROVEMENTS PROJECT

U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action Id. SAW -2016-00075 County: New Hanover U.S.G.S. Quad: Castle 11ai,ne
NOTIFICATION OF JURISDICTIONAL DETERMINATION
Property Owners: New Hanover County Airport Authority
230 Government Center Drive
Wilmington, North Carolina 28403
Agent: Troy Beasley
WithersRavenel
1410 Commonwealth Drive, Suite 101
Wilmington, North Carolina 28403
Size (acres) 123 -acres Nearest TownWilmineton
Nearest Waterway Smith Creek River Basin Cape Fear
USGS HUC 03030007 Coordinates Latitude: 34.2646 N
Longitude: -77.9117 W
Location description: The proiect area is located at Wilmington International Airport (Parcel No. R04200-
001-025-000), in Wilmington, New Hanover County, North Carolina. The project area consists of
approximately 123 -acres of developed airport land, includine the airline terminal, parking areas, multiple
runways, stormwater management facilities, and internal roadways. The Project area is bordered by
undeveloped, forested land and Smith Creek to the southeast, developed airport property to the southwest,
and developed airport property to the north.
Indicate Which of the Following Apply:
A. Preliminary Determination
X There appear to be waters, including wetlands, on the above described property, as depicted on the attached
exhibit, that may be subject to Section 404 of the Clean Water Act (CWA)(33 USC § 1344). This preliminary
jurisdictional determination may be used in the permit evaluation process, including determining compensatory
mitigation. This preliminary determination is not an appealable action under the Regulatory Program
Administrative Appeal Process (Reference 33 CFR Part 331). However, you may request an approved JD,
which is an appealable action, by contacting the Corps district for further instruction.
B. Approved Determination
_ There are Navigable Waters of the United States within the above described property subject to the permit
requirements of Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act. Unless
there is a change in the law or our published regulations, this determination may be relied upon for a period not
to exceed five years from the date of this notification.
_ There are waters of the U.S. including wetlands on the above described property subject to the permit
requirements of Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the
law or our published regulations, this determination may be relied upon for a period not to exceed five years
from the date of this notification.
_ We strongly suggest you have the waters of the U.S. including wetlands on your project area delineated.
Due to the size of your property and/or our present workload, the Corps may not be able to accomplish this
wetland delineation in a timely manner. For a more timely delineation, you may wish to obtain a consultant.
To be considered final, any delineation must be verified by the Corps.
Page 1 of 2

_ The waters of the U.S. including wetlands on your project area have been delineated and the delineation has
been verified by the Corps. We strongly suggest you have this delineation surveyed. Upon completion, this
survey should be reviewed and verified by the Corps. Once verified, this survey will provide an accurate
depiction of all areas subject to CWA jurisdiction on your property which, provided there is no change in the
law or our published regulations, may be relied upon for a period not to exceed five years.
_ The waters of the U.S. including wetlands have been delineated and surveyed and are accurately depicted on
the plat identified below. Unless there is a change in the law or our published regulations, this determination
may be relied upon for a period not to exceed five years from the date of this notification.
_ There are no waters of the U.S., to include wetlands, present on the above described property which are subject
to the permit requirements of Section 404 of the Clean Water Act (33 USC 1344). Unless there is a change in
the law or our published regulations, this determination may be relied upon for a period not to exceed five years
from the date of this notification.
X The property is located in one of the 20 Coastal Counties subject to regulation under the Coastal Area
Management Act (CAMA). You should contact the Division of Coastal Management in
Wilmington, NC, at [phone] to determine their requirements.
Placement of dredged or fill material within waters of the US and/or wetlands without a Department of the Army
permit may constitute a violation of Section 301 of the Clean Water Act (33 USC § 1311). If you have any
questions regarding this determination and/or the Corps regulatory program, please contact John N. Policarpo at
910-251-4487 or John.N.Policarpo(a7%usace.army.mil.
C. Basis for Determination: Portions of this site may exhibit wetland criteria as described in the 1987
Corps Wetland Delineation Manual and the Atlantic and Gulf Coastal Plain Regional Supplement. This
determination is based on a site visit conducted by John N. Policarpo of the Corps on January 8, 2016.
The enclosed f2ure titled "Wetland Delineation Exhibit (01/13/16), ILM Airline Terminal
Improvements Wilmington, New Hanover Countv, North Carolina", dated January 13, 2016, accurately
depicts the approximate extent of on-site waters of the U.S., including wetlands, which may be
jurisdictional under Section 404 of the Clean Water Act.
D. Remarks:
E. Attention USDA Program Participants
This delineation/determination has been conducted to identify the limits of Corps' Clean Water Act jurisdiction for
the particular site identified in this request. The delineation/determination may not be valid for the wetland
conservation provisions of the Food Security Act of 1985. If you or your tenant are USDA Program participants, or
anticipate participation in USDA programs, you should request a certified wetland determination from the local
office of the Natural Resources Conservation Service, prior to starting work.
F. Appeals Information (This information applies only to approved jurisdictional determinations as
indicated in B. above)
This correspondence constitutes an approved jurisdictional determination for the above described site. If you object
to this determination, you may request an administrative appeal under Corps regulations at 33 CFR Part 331.
Enclosed you will find a Notification of Appeal Process (NAP) fact sheet and request for appeal (RFA) form. If
you request to appeal this determination you must submit a completed RFA form to the following address:
US Army Corps of Emgmeers
South Atlantic Division
Attn: Jason Steele, Review Officer

60 Forsyth Street SW, Room IOM15
Atlanta, Georgia 30303-8801
In order for an RFA to be accepted by the Corps, the Corps must determine that it is complete, that it meets the
criteria for appeal under 33 CFR part 331.5, and that it has been received by the Division Office within 60 days of
the date of the NAP. Should you decide to submit an RFA form, it must be received at the above address by N/A.
**It is not necessary to submit an RFA form to the Division Office if you do not object to the determination in this
correspondence.
14/ Corps Regulatory Official: L 7 —r
Date: February 25, 2016 '
f` Expiration Date: February 2.5, 2021
The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we
continue to do so, please complete our Customer Satisfaction Survey, located online at
lilt Lli_revulaiory .usaccsur%c\ .coni'.

y
It
1) WETLAND LIMITS BASED ON FIELD VERIFICATION BY JOHN
POLICARPO WITH CORPS OF ENGINEERS ON 01/08/16.
2) WETLAND LIMITS ARE APPROXIMATE, BASED ON GPS
LOCATION OF WETLAND FLAGS.
4
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NO—
NCWAM FORM FOR
WETLAND A

NC WAM WETLAND ASSESSMENT FORM
Accompanies User Manual Version 4.1
Wetland Site Name Wetland A
Wetland Type Non -Tidal Freshwater Marsh
-
Level III Ecoregion; Middle Atlantic Coastal
Plain
River Basin Cape Fear
r" Yes (- No Precipitation within 48 hrs?
1-aicularor version 4.1
Date 06/26/17
Assessor Name/Organization Troy Beasley - WithersRavenel
Nearest Named Water Body Smith Creek
USGS 8 -Digit Catalogue Unit 03030007
34 263177°N; -77-912125°W
Evidence of stressors affecting the assessment area (may not be within the assessment area)
Please circle and/or make note on last page if evidence of stressors is apparent Consider departure from reference, if
appropriate, in recent past (for instance, approximately within 10 years) Noteworthy stressors include, but are not limited
to the following
• Hydrological modifications (examples: ditches, dams, beaver dams, dikes, berms, ponds, etc.)
• Surface and sub -surface discharges into the wetland (examples discharges containing obvious pollutants, presence of nearby
septic tanks, underground storage tanks (USTs), hog lagoons, etc )
• Signs of vegetation stress (examples: vegetation mortality, insect damage, disease, storm damage, salt intrusion, etc.)
• Habitat/plant community alteration (examples: mowing, Gear -cutting, exotics, etc )
Is the assessment area intensively managed? f: Yes C' No
Regulatory Considerations (select all that apply to the assessment area)
F_ Anadromous fish
F- Federally protected species or State endangered or threatened species
17- NCDWQ riparian buffer rule in effect
F Abuts a Primary Nursery Area (PNA)
F- Publicly owned property
• N C. Division of Coastal Management Area of Environmental Concern (AEC) (including buffer)
• Abuts a stream with a NCDWQ classification of SA or supplemental classifications of HQW, ORW, or Trout
r Designated NCNHP reference community
F Abuts a 303(d) -listed stream or a tributary to a 303(d) -listed stream
What type of natural stream is associated with the wetland, if any? (check all that apply)
C" Blackwater
C Brownwater
r Tidal (if tidal, check one of the following boxes) ( Lunar C Wind Both
Is the assessment area on a coastal island? r Yes G' No
Is the assessment area's surface water storage capacity or duration substantially altered by beaver?
Does the assessment area experience overbank flooding during normal rainfall conditions?
(- Yes f: No
(- Yes (: No
1. Ground Surface Condition/Vegetation Condition - assessment area condition metric
Check a box in each column. Consider alteration to the ground surface (GS) in the assessment area and vegetation structure
(VS) in the assessment area Compare to reference wetland if applicable (see User Manual) If a reference is not applicable,
then rate the assessment area based on evidence of an effect.
GS VS
(' A (- A Not severely altered
(: B r- B Severely altered over a majority of the assessment area (ground surface alteration examples: vehicle tracks, excessive
sedimentation, fire -plow lanes, skidder tracks, bedding, fill, soil compaction, obvious pollutants) (vegetation structure
alteration examples: mechanical disturbance, herbicides, salt intrusion [where appropriate], exotic species, grazing,
less diversity [if appropriate], hydrologic alteration)
2. Surface and Sub -Surface Storage Capacity and Duration - assessment area condition metric
Check a box in each column. Consider surface storage capacity and duration (Surf) and sub -surface storage capacity and
duration (Sub). Consider both increase and decrease in hydrology. Refer to the current NRCS lateral effect of ditching guidance for
North Carolina hydric soils (see USACE Wilmington District website) for the zone of influence of ditches in hydric soils. A ditch
s 1 foot deep is considered to affect surface water only, while a ditch > 1 foot deep is expected to affect both surface and ditch
sub -surface water. Consider tidal flooding regime, if applicable.
Surf Sub
(" A ( A Water storage capacity and duration are not altered
r: B (' B Water storage capacity or duration are altered, but not substantially (typically, not sufficient to change vegetation).
r C r: C Water storage capacity or duration are substantially altered (typically, alteration sufficient to result in vegetation
change) (examples: draining, flooding, soil compaction, filling, excessive sedimentation, underground utility lines).
3. Water Storage/Surface Relief - assessment arealwetland type condition metric (answer for non -marsh wetlands only)
Check a box in each column for each group below Select the appropriate storage for the assessment area (AA) and the wetland
type (WT).
AA WT
3a (- A (" A Majority of wetland with depressions able to pond water > 1 foot deep
c' B ( B Majority of wetland with depressions able to pond water 6 inches to 1 foot deep
i C ( C Majority of wetland with depressions able to pond water 3 to 6 inches deep
f D D Depressions able to pond water < 3 inches deep
3b i A Evidence that maximum depth of inundation is greater than 2 feet
r B Evidence that maximum depth of inundation is between 1 and 2 feet

4. Soil Texture/Structure - assessment area condition metric
Check a box from each of the three soil property groups below. Dig soil profile in the dominant assessment area landscape
feature Make soil observations within the 12 inches Use most recent National Technical Committee for Hydric Soils guidance for
regional indicators
4a C: A Sandy soil
C B Loamy or clayey soils exhibiting redoximorphic features (concentrations, depletions, or rhizospheres)
f ' C Loamy or clayey soils not exhibiting redoximorphic features
C D Loamy or clayey gleyed soil
r E Histosol or histic epipedon
4b. r' A Soil ribbon < 1 inch
(- B Soil ribbon >- 1 inch
4c G' A No peat or muck presence
r B A peat or muck presence
5. Discharge into Wetland - opportunity metric
Check a box in each column. Consider surface pollutants or discharges (Surf) and sub -surface pollutants or discharges (Sub)
Examples of sub -surface discharges include presence of nearby septic tank, underground storage tank (UST), etc
Surf Sub
(- A (: A Little or no evidence of pollutants or discharges entering the assessment area
C B C B Noticeable evidence of pollutants or discharges entering the wetland and stressing, but not overwhelming the
treatment capacity of the assessment area
f C (' C Noticeable evidence of pollutants or discharges (pathogen, particulate, or soluble) entering the assessment area and
potentially overwhelming the treatment capacity of the wetland (water discoloration, dead vegetation, excessive
sedimentation, odor)
6. Land Use - opportunity metric
Check all that apply (at least one box in each column). Evaluation involves a GIS effort with field adjustment Consider sources
draining to assessment area within entire upstream watershed (WS), within 5 miles and within the watershed draining to the
assessment area (5M), and within 2 miles and within the watershed draining to the assessment area (2M) Effective riparian buffers
are considered to be 50 feet wide in the Coastal Plain and Piedmont ecoregions and 30 feet wide in the Blue Ridge Mountains ecoregion
WS 5M 2M
F- A F7 A F- A a 10% impervious surfaces
F_ B F B F- B < 10% impervious surfaces
F- C F- C r C Confined animal operations (or other local, concentrated source of pollutants)
F- D i D I`_ D >_ 20% coverage of pasture
170 E r E F- E > 20% coverage of agricultural land (regularly plowed land)
F✓ F r F 1`7 F - 20% coverage of maintained grass/herb
F G r G F- G >_ 20% coverage of clear-cut land
177 H r H r H Little or no opportunity to improve water quality Lack of opportunity may result from hydrologic alterations
that prevent drainage or overbank flow from affecting the assessment area
7. Wetland Acting as Vegetated Buffer - assessment area/wetland complex condition metric
7a Is assessment area within 50 feet of a tributary or other open water?
C Yes C: No If Yes, continue to 7b. If No, skip to Metric 8.
Wetland buffer need only be present on one side of the water body. Make buffer judgment based on the average width of the wetland
Record a note if a portion of the buffer has been removed or disturbed.
7b How much of the first 50 feet from the bank is weltand? Descriptor E should be selected if ditches effectively bypass the buffer.
r A >_ 50 feet
B From 30 to < 50 feet
C` C From 15 to < 30 feet
r D From 5 to < 15 feet
( E < 5 feet or buffer bypassed by ditches
7c Tributary width If the tributary is anastomosed, combine widths of channels/braids for a total width
(" <- 15 -feet wide r > 15 -feet wide C Other open water (no tributary present)
7d. Do roots of assessment area vegetation extend into the bank of the tributary/open water?
(' Yes r No
7e Is tributary or other open water sheltered or exposed?
( Sheltered - adjacent open water with width < 2500 feet and no regular boat traffic.
Exposed - adjacent open water with width _> 2500 feet or regular boat traffic
8. Wetland Width at the Assessment Area - wetland type/wetland complex metric (evaluate for riparian wetlands only)
Check a box in each column. Select the average width for the wetland type at the assessment area (WT)
and the wetland complex at the assessment areas (WC). See User Manual for WT and WC boundaries.
WT WC
r A r A z 100 feet
r B r B From 80 to < 100 feet
r C r C From 50 to < 80 feet
r D (' D From 40 to < 50 feet
r E r E From 30 to < 40 feet
r F r F From 15 to < 30 feet
r G r G From 5 to < 15 feet
r H (' H < 5 feet

at
9. Inundation Duration - assessment area condition metric
Answer for assessment area dominant landform
r- A Evidence of short -duration inundation (< 7 consecutive days)
r B Evidence of saturation, without evidence of inundation
r: C Evidence of long -duration inundation or very long -duration inundation (7 to 30 consecutive days or more)
10. Indicators of Deposition - assessment area condition metric
Consider recent deposition only (no plant growth since deposition).
r A Sediment deposition is not excessive, but at approximately natural levels.
l: B Sediment deposition is excessive, but not overwhelming the wetland.
r' C Sediment deposition is excessive and is overwhelming the wetland
11. Wetland Size - wetland type/wetland complex condition metric
Check a box in each column. Involves a GIS effort with field adjustment This metric evaluates three aspects of the wetland area: the
size of the wetland type (WT), the size of the wetland complex (WC), and the size of the forested wetland (FW) (if applicable, see User
Manual). See the User Manual for boundaries of these evaluation areas. If assessment area is clear-cut, select "K" for the FW column
WT WC FW (if applicable)
r'A r'A r'A >_500acres
r B r- B i B From 100 to < 500 acres
r C r' C r C From 50 to < 100 acres
r' D r- D r` D From 25 to < 50 acres
r E r- E r E From 10 to < 25 acres
r' F F r F From 5 to < 10 acres
r' G l G r G From 1 to < 5 acres
r' H r H r- H From 0 5 to < 1 acre
r' I r' I r I From 0 1 to < 0 5 acre
(: J [: J r J From 0 01 to < 0 1 acre
r K r K r' K < 0 01 acre or assessment area is clear-cut
12. Wetland Intactness - wetland type condition metric (evaluate for Pocosins only)
r'A Pocosin is the full extent (>- 90%) of its natural landscape size
r' B Pocosin is < 90% of the full extent of its natural landscape size.
13. Connectivity to Other Natural Areas - landscape condition metric
13a. Check appropriate box(es) (a box may be checked in each column). Involves a GIS effort with field adjustment. This
evaluates whether the wetland is well connected (Well) and/or loosely connected (Loosely) to the landscape patch, the contiguous
metric naturally vegetated area and open water (if appropriate). Boundaries are formed by four -lane roads, regularly maintained utility
line corridors the width of a four -lane road or wider, urban landscapes, fields (pasture open and agriculture), or water > 300 feet wide
Well Loosely
A f A >- 500 acres
r B r B From 100 to < 500 acres
r C C' C From 50 to < 100 acres
C D i D From 10 to < 50 acres
r E r E < 10 acres
re F r F Wetland type has a poor or no connection to other natural habitats
13b. Evaluate for marshes only
r' Yes f: No Wetland type has a surface hydrology connection to open waters/stream or tidal wetlands.
14. Edge Effect - wetland type condition metric (skip for all marshes)
May involve a GIS effort with field adjustment. Estimate distance from wetland type boundary to artificial edges. Artificial edges include
non -forested areas > 40 feet wide such as fields, development, roads, regularly maintained utility line corridors and clear -cuts
Consider the eight main points of the compass.
r A No artificial edge within 150 feet in all directions
r B No artificial edge within 150 feet in four (4) to seven (7) directions
r C An artificial edge occurs within 150 feet in more than four (4) directions or assessment area is clear-cut
15. Vegetative Composition - assessment area condition metric (skip for all marshes and Pine Flat)
r' A Vegetation is close to reference condition in species present and their proportions Lower strata composed of appropriate
species, with exotic plants absent or sparse within the assessment area.
r' B Vegetation is different from reference condition in species diversity or proportions, but still largely composed of native species
characteristic of the wetland type. This may include communities of weedy native species that develop after clearcutting or
clearing. It also includes communities with exotics present, but not dominant, over a large portion of the expected strata
(� C Vegetation severely altered from reference in composition Expected species are unnaturally absent (planted stands of non -
characteristic species or at least one stratum inappropriately composed of a single species). Exotic species are dominant in
at least one stratum
16. Vegetative Diversity - assessment area condition metric (evaluate for Non -tidal Freshwater Marsh only)
C- A Vegetation diversity is high and is composed primarily of native species (<10% cover of exotics).
G B Vegetation diversity is low or has > 10% to 50% cover of exotics.
r• C Vegetation is dominated by exotic species (>50% cover of exotics).

17. Vegetative Structure — assessment area/wetland type condition metric
17a Is vegetation present?
G- Yes ­ No If Yes, continue to 17b If No, skip to Metric 18
17b Evaluate percent coverage of assessment area vegetation for all marshes only Skip to 17c for non -marsh wetlands
r: A >_ 25% coverage of vegetation
C B < 25% coverage of vegetation
17c. Check a box in each column for each stratum. Evaluate this portion of the metric for non -marsh wetlands Consider structure
in airspace above the assessment area (AA) and the wetland type (WT) separately
AA WT
CL r' A r- A Canopy closed, or nearly closed, with natural gaps associated with natural processes
o B r-. B Canopy present, but opened more than natural gaps
m
U r C C Canopy sparse or absent
`oT r A A Dense mid-story/sapling layer
0? C B B Moderate density mid-story/sapling layer
'0 C C Mid-story/sapling layer sparse or absent
a r A r- A Dense shrub layer
t - Br-
B
Moderate density shrub layer
U r' C
C C
Shrub layer sparse or absent
r-- A
r A
Dense herb layer
- B
B
Moderate density herb layer
" C
C
Herb layer sparse or absent
18. Snags — wetland type condition metric
r A Large snags (more than one) are visible (> 12 -inches DBH, or large relative to species present and landscape stability)
C: B Not A
19. Diameter Class Distribution — wetland type condition metric
A Majority of canopy trees have stems > 6 inches in diameter at breast height (DBH), many large trees (> 12 inches DBH) are
present
r B Majority of canopy trees have stems between 6 and 12 inches DBH, few are > 12 -inch DBH.
r' C Majority of canopy trees are < 6 inches DBH or no trees
20. Large Woody Debris — wetland type condition metric
Include both natural debris and man -placed natural debris
r A Large logs (more than one) are visible (> 12 inches in diameter, or large relative to species present and landscape stability).
C: B Not A
21. Vegetation/Open Water Dispersion — wetland type/open water condition metric (evaluate for Non -Tidal Freshwater
Marsh only)
Select the figure that best describes the amount of interspersion between vegetation and open water in the growing season. Patterned
areas indicate vegetated areas, while solid white areas indicate open water
�A /~B rC r±D
22. Hydrologic Connectivity — assessment area condition metric (evaluate for riparian wetlands only)
Examples of activities that may severely alter hydrologic connectivity include intensive
ditching, fill, sedimentation, channelization, diversion, man-made berms, beaver dams, and stream incision
f A Overbank and overland flow are not severely altered in the assessment area
r B Overbank flow is severely altered in the assessment area
r C Overland flow is severely altered in the assessment area.
r D Both overbank and overland flow are severely altered in the assessment area
Notes

Wetland Site Name
Wetland Type
NC WAM Wetland Rating Sheet
Accompanies User Manual Version 4.1
Rating Calculator Version 4.1
Wetland A
Non -Tidal Freshwater Marsh
Date 06/26/17
Assessor Name/Organization ,y Beasley - WithersRave
Notes on Field Assessment Form (YIN)
NO
Presence of regulatory considerations (YIN)
NO
Wetland is intensively managed (YIN)
YES
Assessment area is located within 50 feet of a natural tributary or other open water (YIN)
NO
Assessment area is substantially altered by beaver (YIN)
NO
Assessment area experiences overbank flooding during normal rainfall conditions (YIN)
NO
Assessment area is on a coastal island (YIN)
NO
Sub -function Rating Summary
Function Sub -function
Metrics
Rating
Hydrology Surface Storage and Retention
Condition
NA
Sub -Surface Storage and Retention
Condition
NA
Water Quality Pathogen Change
Condition
NA
Condition/Opportunity
Condition/Opportunity
NA
NA
Opportunity Presence? (YIN)
NA
Particulate Change
Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Soluble Change Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Physical Change Condition
NA
Condition/Opportunity
NA
Opportunity Presence? (YIN)
NA
Pollution Change Condition
NA
Condition/Opportunity
NA
ODDortunity Presence? (YIN)
NA
Habitat Physical Structure Condition LOW
Landscape Patch Structure Condition LOW
Vegetation Composition Condition MEDIUM
Function Rating Summary
Function
Metrics/Notes
Rating
Hydrology
Condition
HIGH
Water Quality
Condition
MEDIUM
Condition/Oppertunity
MEDIUM
Opportunity Presence? (YIN)
YES
Habitat
Conditon
LOW
Overall Wetland Rating MEDIUM

%0 WithersRavenel
NC CAPE FEAR UMBRELLA
MITIGATION BANK LETTER
OF AVAILABILITY

NORTHEAST CAPE FEAR UMBRELLA MITIGATION BANK
Agent: Land Management Group, Inc.
3805 Wrightsville Avenue, Suite 15
Wilmington, NC 28403
Credit Reservation Letter
June 15, 2017
Wilmington Airport Authority
Julie Wilsey — Airport Director
17400 Airport Blvd., Suite 12
Wilmington, NC 28461
Project: ILM Wildlife Hazard Mitigation Project for Wet Detention Basins and Open Ditches
Dear Ms. Wilsey:
The Northeast Cape Fear Umbrella Mitigation Bank (Bank) is providing preliminary acceptance to supply
mitigation credits for impacts to stream and non -riparian wetlands associated with the above -referenced
project located at the Wilmington International Airport (ILM) in New Hanover County, NC. Please refer to
the table below depicting the type and quantity of credits requested and reserved for your project.
Mitigation Type Credits Reserved Fee Per Unit Fee
Stream 124 $391.00 $48,484.00
Non- Riparian Wetland 0.3 $51,422.00 $15,426.60
Riparian Wetland 0.0 $71,273.00 $0.00
Total $63,910.60
The Bank will reserve the stream and wetland credits identified above through September 15, 2017. Note
that requests to reserve credits beyond 90 days will require a deposit. Please contact us if you need a
reservation to extend beyond the 90 -day period.
Upon request for credit transfer, the Bank will issue an invoice in the amount of $63,910.60. Upon receipt
of payment, the Bank will provide an executed Transfer of Credit Certificate for the total amount of credits
invoiced and paid for. If you have any questions or need additional information, please contact me by
phone at [phone] or by email at [e-mail].
Sincerely,
Northeast Cape Fear Umbrella Mitigation Bank
Christian Preziosi
Land Management Group, Inc. (agent)
Northeast Cape Fear Umbrella Mitigation Bank 1
c/o Land Management Group, Inc.
3805 Wrightsville Avenue, Suite 15
Wilmington, NC 28403

1% WithersRavenel
SHPO COMMENT LETTER

F
V
North Carolina Department of Natural and Cultural Resources
State Historic Preservation Office
Ramona M. Bartos, Administrator
Governor Roy Cooper
Secretary Susi H. Hamilton
February 17, 2017
Brian Ensign
Talbert & Bright
4810 Shelley Drive
Wilmington, NC 28405
Office of Archives and History
Deputy Secretary Kevin Cherry
Re: Storm Water Facilities Improvements, Wilmington International Airport, TBI 3301-1604,
New Hanover County, ER 17-0226
Dear Mr. Ensign:
Thank you for your letter of January 31, 2017, concerning the above project.
We have conducted a review of the project and are aware of no historic resources which would be affected
by the project. Therefore, we have no comment on the project as proposed.
The above comments are made pursuant to Section 106 of the National Historic Preservation Act and the
Advisory Council on Historic Preservation's Regulations for Compliance with Section 106 codified at 36
CFR Part 800.
Thank you for your cooperation and consideration. If you have questions concerning the above comment,
contact Renee Gledhill -Earley, environmental review coordinator, at 919-807-6579 or
environmental.review(cbncdcr.gov. In all future communication concerning this project, please cite the
above referenced tracking number.
Sincerely,
'Ramona M. Bartos
Location: 109 Fast Jones Street, Raleigh NC 27601 Mailing Address: 4617 Mail Service Center, Raleigh NC 27699-4617 Telephone/Fax: [phone]-6599

%0 WithersRavenel
NO
USFWS CONCURRENCE LETTER

4PP��ENT OF United States Department of the Interior
w
FISH AND WILDLIFE SERVICE.
Raleigh ES Field Office
AQ
= ,q Post Office Box 33726
's Raleigh, North Carolina 27636-3726
April 14, 2017
Troy Beasley
WithersRavenel
1410 Commonwealth Drive, Suite 101
Wilmington, NC 28403
Re: Wildlife Hazard Mitigation for Wet Detention Basins & Open Ditches —
New Hanover County, NC
Dear Mr. Beasley:
This letter is to inform you that the Service has established an on-line project planning and
consultation process which assists developers and consultants in determining whether a
federally -listed species or designated critical habitat may be affected by a proposed project. For
future projects, please visit the Raleigh Field Office's project planning website at
https://www.fws.gov/raieiWVpp.html. If you are only searching for a list of species that may be
present in the project's Action Area, then you may use the Service's Information, Planning, and
Consultation System (IPaC) website to determine if any listed, proposed, or candidate species
may be present in the Action Area and generate a species list. The IPaC website may be viewed
at https://ecos.fws.yov/ipac/. The IPaC web site contains a complete and frequently updated list
of all endangered and threatened species protected by the provisions of the Endangered Species
Act of 1973, as amended (16 U.S.C. 1531 et seq.)(Act), a list of federal species of concern, that
are known to occur in each county in North Carolina, and other resources.
Section 7 of the Act requires that all federal agencies (or their designated non-federal
representative), in consultation with the Service, insure that any action federally authorized,
funded, or carried out by such agencies is not likely to jeopardize the continued existence of any
federally -listed endangered or threatened species. A biological assessment or evaluation may be
prepared to fulfill that requirement and in determining whether additional consultation with the
Service is necessary. In addition to the federally -protected species list, information on the
species' life histories and habitats and information on completing a biological assessment or
I The term "federal species of concern" refers to those species which the Service believes might be in need of
concentrated conservation actions. Federal species of concern receive no legal protection and their designation does
not necessarily imply that the species will eventually be proposed for listing as a federally endangered or threatened
species. However, we recommend that all practicable measures be taken to avoid or minimize adverse impacts to
federal species of concern.

evaluation and can be found on our web page at http://www.fws.gov/raleigh. Please check the
web site often for updated information or changes.
If your project contains suitable habitat for any of the federally -listed species known to be
present within the county where your project occurs, the proposed action has the potential to
adversely affect those species. As such, we recommend that surveys be conducted to determine
the species' presence or absence within the project area. The use of North Carolina Natural
Heritage program data should not be substituted for actual field surveys.
If you determine that the proposed action may affect (i.e., likely to adversely affect or not likely
to adversely affect) a federally -protected species, you should notify this office with your
determination, the results of your surveys, survey methodologies, and an analysis of the effects
of the action on listed species, including consideration of direct, indirect, and cumulative effects,
before conducting any activities that might affect the species. If you determine that the proposed
action will have no effect (i.e., no beneficial or adverse, direct or indirect effect) on federally
listed species, then you are not required to contact our office for concurrence (unless an
Environmental Impact Statement is prepared). However, you should maintain a complete record
of the assessment, including steps leading to your determination of effect, the qualified personnel
conducting the assessment, habitat conditions, site photographs, and any other related articles.
With regard to the above -referenced project, we offer the following remarks. Our comments are
submitted pursuant to, and in accordance with, provisions of the Endangered Species Act.
Based on the information provided and other information available, it appears that the proposed
action is not likely to adversely affect any federally -listed endangered or threatened species, their
formally designated critical habitat, or species currently proposed for listing under the Act at
these sites. We believe that the requirements of section 7(a)(2) of the Act have been satisfied for
your project. Please remember that obligations under section 7 consultation must be
reconsidered if. (1) new information reveals impacts of this identified action that may affect
listed species or critical habitat in a manner not previously considered; (2) this action is
subsequently modified in a manner that was not considered in this review; or, (3) a new species
is listed or critical habitat determined that may be affected by the identified action.
However, the Service is concerned about the potential impacts the proposed action might have
on aquatic species. Aquatic resources are highly susceptible to sedimentation. Therefore, we
recommend that all practicable measures be taken to avoid adverse impacts to aquatic species,
including implementing directional boring methods and stringent sediment and erosion control
measures. An erosion and sedimentation control plan should be submitted to and approved by
the North Carolina Division of Land Resources, Land Quality Section prior to construction.
Erosion and sedimentation controls should be installed and maintained between the construction
site and any nearby down -gradient surface waters. In addition, we recommend maintaining
natural, vegetated buffers on all streams and creeks adjacent to the project site.
The North Carolina Wildlife Resources Commission has developed a Guidance Memorandum (a
copy can be found on our website at (http://www.fws.gov/raleigh) to address and mitigate
secondary and cumulative impacts to aquatic and terrestrial wildlife resources and water quality.
2

We recommend that you consider this document in the development of your projects and in
completing an initiation package for consultation (if necessary).
We hope you find our web page useful and informative and that following the process described
above will reduce the time required, and eliminate the need, for general correspondence for
species' lists. If you have any questions or comments, please contact John Ellis of this office at
[phone] ext. 26.
Sincerely.
Pete Benjamin
Field Supervisor

NO WithersRavenel
IMPACT EXHIBITS

Lo
EXTEND EXISTING
30' CONCRETE PIPE
8 FEET
INV 15.00
(D
4+0
C!
PROPOSED 30"
FES
INIV 16.29
TALBERT & BRIGHT
ENGINEERING & PLANNING CONSULTANTS
1,00
00001"
EDGE-; WATER 401
ELEV.: 16.9'LOD
(12/30/16)
//l -
POND "A'
NON -JURISDICTIONAL
STORMWATER POND
V7
0-
BASELINE - POND A PIPE
--�
PROPOSED 190 LF 30RC E 0 0,5%�RC
-2+0 1+
ORM
--- "M 2010
EXTOqU (301
PVC
DRAINS
401
IMPACT 1
WETLAND A
0.3 ACRES (PERMANENT)
EXISTING CONTOUR
PROPOSED CONTOUR
CL
TYPICAL CROSS SECTION
WETLAND A RE—GRADING/FILL
NOT TO SCALE
EXISTING
GRADE/WETLAND A
SLOPE VARIES
PROPOSED FINISHED
GRADE/VEGETATED
CONVEYANCE BOTTOM
WETLAND A
PERMANENT IMPACTS: 0.3 ACRES
SCALE: 1"=50'
WILMINGTON INTERNATIONAL AIRPORT
WILMINGTON, NORTH CAROLINA
WILDLIFE HAZARD MITIGATION
FOR WET DETENTION BASINS AND OPEN DITCHES
WETLAND A IMPACTS

24
22
20
18
16
14
12
10
8
6
4
POND A DITCH
PROPOSED 8' 30' RC PIPE
EXISi1NG GRADE
INV 15.0 10(
PROPOSED GRADE
TALBERT & BRIGHT
ENGINEERING & PLANNING CONSULTANTS
o, Irn rn j00 Irn rn Irn
(Ln
!�
2+50 3+00 3+50 4+00 4+50
PROFILE
POND A OUTLET DITCH
d,
(�
I
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0)
`-
O
,�
iO O -
i�
-
�
0+50 1 +00 1+50 2+00
0+50
TALBERT & BRIGHT
ENGINEERING & PLANNING CONSULTANTS
o, Irn rn j00 Irn rn Irn
(Ln
!�
2+50 3+00 3+50 4+00 4+50
PROFILE
POND A OUTLET DITCH
SCALE: 1"=50' H OR Z
1"= 5' VERT
WILMINGTON INTERNATIONAL AIRPORT
WILMINGTON, NORTH CAROLINA
WILDLIFE HAZARD MITIGATION
FOR WET DETENTION BASINS AND OPEN DITCHES
d,
0,
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;o,
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-
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5+00 5+50 6+00 6+50 7+00 7+50
SCALE: 1"=50' H OR Z
1"= 5' VERT
WILMINGTON INTERNATIONAL AIRPORT
WILMINGTON, NORTH CAROLINA
WILDLIFE HAZARD MITIGATION
FOR WET DETENTION BASINS AND OPEN DITCHES

STORM MANHOLE -
FRAME: 14.39 \ _
I.E.: 4.89 _
BOTTOM: 4.74 So \ I
PROPOSED 36" RCP
F Q�.
PROPOSED FINISHED GRADE
PROPOSED FILL � ___ _
END 36" FLARED R7 -ONCRETE
I.E.: 4 d 100 FLUME
s! 0 "O ASPHALT
oo \�h O) O DRIVE
G9�FS q P� EXISTING GROUND \ �p CONCRETE ETE
��
(EXISTING) BORE -8
EXISTING CONCRETE DITCH p�\ J3
LINER - TO BE REMOVED \ \
00
TALBERT & BRIGHT
ENGINEERING & PLANNING CONSULTANTS
SECTION B -B
NOT TO SCALE
PROPOSED 100 LF 36" RC
PIPE ® 0.10%
00, 0
IMPACT 2A -PERMANENT
STREAM 2
PROPOSED FINISHED GRADE PROPOSED 36" RCP PROPOSED END WALL 102 LF (1,505 SF)
PROPOSED 6' DIA
MANHOLE
-Z�L RIM 12.40
INV 4.27
7 PROPOSED 12' X 20' RIP
RAP OUTLET PROTECTION
S\ LJP�j
9pi OQk,
FS �3 r EXISTING GROUND
STREAM 2
SECTION C -C AREA 2A IMPACTS:
NOT TO SCALE EXISTING CONCRETE
LINED DITCH
AREA: 1,505 SF
LENGTH: 102 LF
AREA 213 IMPACTS:
EXISTING DITCH
AREA IMPACTED: 576 SF
LENGTH: 62 LF
=30"
G
IMPACT 2B -PERMANENT co,
STREAM 2
62 LF (576 SF)
1 �
RIPRAP OUJ
PROTECTION
k
1 ) 8' CHAIN LINK
/ FENCE
PROPOSED 36 LF
36" RC PIPE ® 0.10%
I
I
I
j I
jNOT LINED ; EN
WITH
CONCRETE 1•E•
41
c�
i
EXISTING PIPE
0\
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1J
Q� END FLARED 24"
I.E. 5.89
PROPOSED CAST IN
PLACE 36" ENDWALL
INV 4.23
WILMINGTON INTERNATIONAL AIRPORT
WILMINGTON, NORTH CAROLINA
WILDLIFE HAZARD MITIGATION
FOR WET DETENTION BASINS AND OPEN DITCHES
STREAM 2 IMPACTS