20040639 Ver 1_COMPLETE FILE_20040421

V?ATF Michael F. Easley, Governor
RQ William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P. E. Director
"I Division of Water Quality
4 'r
Coleen H. Sullins, Deputy Director
Division of Water Quality
September 22, 2004
DWQ Project # 04-0639
Halifax County
Halifax-Northampton Regional Airport Authority
Attn: Mr. Rick Benton
P.O. Box 38
Roanoke Rapids, NC 27870-0038
Subject Property: Runway Site Preparation, Quentin Farm Road (SR1619), Halifax, NC
Approval of Stormwater Management Plans
Dear Mr. Benton:
Staff of the Division of Water Quality have reviewed the ,stormwater management plan
submitted by your engineer (Terry Bumpus, The LPA Group of NC) dated July 21, 2004, with
additional information dated September 16, 2004. This plat satisfies Condition 3 of the 401
Water Quality Certification issued to you on June 18, 2004. `As stated in that Certification, this
stormwater management facility must be constructed and operational and the stormwater
management plan implemented. All other conditions of the Certification are still applicable and
must be followed.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean
Water Act and the Tar-Pamlico riparian buffer protection rule as described within 15A NCAC
2B .0259. If you have any questions, please telephone Cynthia Van Der Wiele at 919-715-3473
or John Dorney at 919-733-9646.
AWK/cvdw
cc:
27609
Terry Bumpus, The LPA Group of NC, 4904 Professional
I
Suite 201, Raleigh, NC
USACE Raleigh Regulatory Field Office
DWQ Raleigh Regional Office
DLR Raleigh Regional Office
File Copy
Central Files
Filename: 040639
N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
*E
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (htto://h2o.enr.state.nc.us/ncwetlands)
Customer Service #: 1-877-623-6748
THE LPA GROUT' of North Carolina, p.a.
Transportation Consultants
4904 Professional Court, Suite 201
Raleigh, North Carolina 27609
[phone]
FAX [phone]
September 16, 2004
%ETt.ANDS 1401 GROUP
Ms. Cynthia Van Der Wiele
NCDENR, Division of Water Quality SE? 17 2004
Wetlands Unit
1650 Mail Service Center WATER f?U?.?.i?°Y SECTION
Raleigh, North Carolina 27699-1650
Re: Halifax-Northampton Regional Airport
DWQ Project # 04-0639
Dear Ms. Van Der Wiele:
We have received Mr. Dorney's letter of September 3, 2004 regarding deficiencies in
the stormwater management plan concerning Halifax-Northampton Regional Airport.
This letter is intended to answer and address-those issues raised in Mr. Dorney's letter.
Item 1 questions the design's compliance with FAA Advisory Circular 150/5200-33.
While the current design and stormwater management plan does not specifically comply
with all suggested measures, the design has taken the measures advised in the circular
into consideration and has incorporated those measures deemed to be in keeping with
actual and best airport engineering design practices.
Item 2 was concerning the drawdown time of each of the three dry detention basins.
These basins were designed to comply with DWQ requirements for retaining the first
one inch of runoff and releasing over a two to five day period. We followed the
recommendation of AC 150/5200-33 for a drawdown time of 48 hours. The drawdown
times of basins one through three are 56, 50, and 50 hours respectively, which meets
the intent of the 48 hours drawdown.
Item 3 recommends planting of emergent and forested wetland vegetation to enhance
biological pollutant rate removal and lower the potential for attracting wildlife.
Subsequent to receipt of Mr. Dorney's letter and our phone conversation, I contacted
John Caldwell and Rick Barkes, with the NCDOT, Division of Aviation, as well as Mike
Beiger, with the U.S. Department of Agriculture, to get their input as to how this situation
has been handled at other airports. The consensus was that for a normally dry
detention basin, planted and maintained grass would be the best option and provide the
least attractive area for wildlife. Additionally, the design of the detention basins requires
relatively small outflow orifices to retain a pool as discussed under Item 2 above. It was
Member of THE LPA GROUP INCORPORATED
ATLANTA, GA - BATON ROUGE, LA ¦ CHARLESTON, SC - CHARLOTTE, NC - CHICAGO, IL ¦ COLUMBA SC ¦ GREENSBORO, NC - KNOXVILLE, TN
MOBILE, AL - MYRTLE BEACH, SC - ORLANDO, FL - RALEIGH, NC - RICHMOND, VA - SARASOTA, FL - TALLAHASSEE, FL - TAMPA, FL - WEST PALM BEACH, FL
i
Ms. Cynthia Van Der Whiele
September 16, 2004
Page 2
felt that introduction of wetland species and trees would provide cover for animals other
than waterfowl as well provide refuse which would tend to clog the outlet orifices of the
ponds and create standing water for a longer duration than planned.
In summary, the project and stormwater management plan as submitted for review has
been designed in accordance with all applicable advisory circulars taking into account
actual and best airport design practices where compromises were necessary in order to
blend airport and environmental goals. I trust this additional information will resolve any
concerns you may have had in regard to wildlife issues.
If you have any questions or need additional information, please do not hesitate to call.
Sincerely,
THE LPA GROUP of North Carolina, p.a.
Terry G. Bumpus
Project Engineer
cc: Rick Benton
John Caldwell
Rick Barkes
.??
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
September 3, 2004
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Terry G. Bumpus
LPA Group, Inc.
4904 Professional Court, Suite 201
Raleigh, NC 27609
Subject Property: Halifax-Northampton Regional Airport
REQUEST FOR MORE INFORMATION-Stormwater Management Plan
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
DWQ Project # 04-0639
Halifax County
Dear Mr. Bumpus:
On July 21, 2004, the Division of Water Quality (DWQ) received the stormwater management plans required
to comply with the conditions of the 401 Water Quality Certification. The DWQ has determined that the stormwater
management design has design deficiencies as discussed below.
1. The Stormwater Management Plan does not explicitly state that it meets current FAA guidance (Federal
Aviation Administration Advisory Circular 150/5200-33, Hazardous Wildlife Attractants on or Near
Airports).
2. The drawdown time must be specified. You are indicating thaf runoff from the 1" storm will be captured
and released over a period of 2 to 5 days. FAA requirements prohibit open water after 48 hours.
3. Please include wildlife-limiting modifications to the basin design. This may include measures such as
limiting standing water duration while achieving the required level of nutrient removal (de-icing agents are
also a concern, not just TSS). DWQ strongly recommends the addition of emergent and forested wetland
vegetation to the basin bottom for two purposes:
¦ Enhanced biological pollutant rates
¦ Planting wetland vegetation, including trees, obscures stormwater in the basins during the
extended detention period, reducing the facilities' potential for wildlife attraction-
particularly preventing the visibility of open water from the air.
Please respond within three weeks of the date of this letter by sending three (3) copies this information in
writing. This letter only addresses the stormwater management plan review and does not authorize any impacts to
wetlands or streams until the plans are approved. Please contact Ms. Cynthia Van Der Wiele at 919-715-3473 if you
have questions or clarification of these issues.
Sincerely,
JRDlcvdw
cc: DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Filename: 040639HalifaxNHampton(Halifax)Storm MoreInfo.doc
401 Wetlands Certification Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650. One
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 NorthCarolina
Phone: [phone] / FAX [phone] / Internet: htto://h2o.enr.state.nc.us/ncwetlands -A7 __ 1 _ _ _ _ - //_
An Equal Opportunity/Affirmative Action Employer- 500/6 Recycled/10°/a Post Consumer Paper
THE LPA GROUP of North Carolina, p.a.
Transportation Consultants
4904 Professional Court, Suite 201
Raleigh, North Carolina 27609
[phone]
FAX [phone]
July 14, 2004
Mr. John Dorney
NCDENR, Division of Water Quality
Wetlands Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
\0
Re: Halifax-Northampton Regional Airport
DWQ Project # 04-0639
Dear Mr. Dorney:

WETLANDS / 401 GROUP
JUL 2 1 2004
WATER QUALITY SECTION
This letter shall serve as an addendum to the Wetland and Stream Mitigation Plan
submitted to your office on May 18, 2004, and to address items covered in Alan
Klimek's letter of June 18, 2004.
In regard to the planting of trees as mitigation, trees will be planted in a random manner
and will be monitored to ensure that a minimum of 320 trees per acre will be alive in the
buffer areas at the end of five years. All mitigation areas will be protected through a
deed restriction filed at the Halifax County Courthouse.
If you have any questions or need additional information, please do not hesitate to call.
Sincerely,
THE LPA GROUP 4
Terry G. umpus
Project Engineer
TGB/pcm
Enclosures
cc: Rick Benton,
6t 4 ej
?YVN n e, ?

00
Member of THE LPA GROUP INCORPORATED
ATLANTA, GA - BATON ROUGE, LA - CHARLESTON, SC - CHARLOTTE, NC - CHICAGO, IL ¦ COLUMBIA. SC - GREENSBORO, NC - KNOXVILLE, TN
MOBILE, AL - MYRTLE BEACH, SC - ORLANDO, FL - RALEIGH, NC - RICHMOND, VA - SARASOTA, FL - TALLAHASSEE, FL ¦ TAMPA, FL - WEST PALM BEACH, FL
WETLANDS/ 401 GROUP
STORMWATER MANAGEMENT PLAN
FOR JUL 2 1 2004
HALIFAX-NORTHAMPTON REGIONAL AIRPORTWAI,ER QUALITY SECTION
PROJECT DESCRIPTION AND PURPOSE
The new Halifax-Northampton Regional Airport is being developed to replace the
existing Halifax County Airport. The existing Airport is being restrained from its
full functional capability at its present development level. An expansion of the
existing Airport would require substantial housing and structure relocation and
would be cost prohibitive. The new Airport will allow for a runway with full
corporate airport length potential, space for aprons and hangars, a reduction of
noise impacts to developed areas and minimal land parcel acquisitions.
The Runway Site Preparation project will be the first phase of development for
the new Airport and will install all stormwater management features for the
ultimate development of the airport. It will consist of approximately 596,000 cubic
yards of unclassified excavation, disturbing 192 acres of Airport property. This
will include grading of the future runway, parallel taxiway, connector taxiways,
and apron for the Airport. The project also includes construction of three
permanent, dry, stormwater detention basins that will be utilized for sediment
control during construction.
EXISTING CONDITIONS
This project lies within the Tar-Pamlico and Roanoke River Basins. Land north of
SR 1619 drains to Quankey Creek and into the Roanoke River Basin. Land
south of SR1619 drains to Little Marsh Swamp and into the Tar-Pamlico River
Basin. The existing site is generally flat with an increasing drop in elevation
towards the existing waterways on either end of the site. The area was once
farmland, which was fertilized and treated with pesticides annually. Currently,
the area is over grown with tall grass and abandoned crops. There are isolated
stands of trees on the site and larger areas of forest around the perimeter of the
property.
Currently, storm water is generated from smaller sub-basins via a combination of
sheet flow, shallow concentrated flow, and concentrated flow. The runoff is
collected by and transported to the outfall through a system of abandoned farm
irrigation ditches and streams.
PROPOSED COLLECTION SYSTEMS
Although the current phase of construction for the new Airport will not create
additional impervious area, future phases of development will add approximately
52 acres of impervious surface. These new impervious areas will generate
Runway Site Preparation 1 July 2004
surface runoff, which will be removed via five networks of inlets and reinforced
concrete pipe, as well as a system of grass-lined channels.
The layout of the proposed collection system was developed through an iterative
process to achieve the most efficient removal of storm water runoff using the
least amount of materials to do so. StormCAD, software produced by Haestad
Methods, Inc., was selected for use in the design of the inlets and pipe. All
rainfall and sub-watershed data for each inlet in the proposed system were input.
STORMWATER QUALITY ANALYSIS
NCDENR requires that runoff from new developments must be controlled to
manage nonpoint source pollution. This is achieved by employing a series of
stormwater best management practices (BMPs) to achieve a removal of 85% of
total suspended solids (TSS). To control TSS during construction of the current
project and during regular use once construction has been completed, a series of
BMPs has been designed to meet the 85% requirement.
The majority of the runoff collection systems employed will consist of grass-lined
ditches. These ditches vary in slope from 0.3% to a maximum of 4.5%. The
ditches also contain multiple rock check dams, which will act to slow the
conveyance of water, enable infiltration, and trap suspended solids. The majority
of the ditches and pipe systems will flow into the three dry sediment basins,
which will aid TSS removal even further. Rip-rap aprons will be placed at the
outlet of the pipe systems that flow into and out of the sediment basins to
minimize channel erosion and lower the velocity of the water.
Level spreaders and filter strips will further treat ditches that do not empty into
sediment basins. The level spreaders will be seeded with grass to serve as the
filtering material with erosion control matting for added stability. At the outlet of
the level spreaders, water will sheet flow across relatively flat, grassed filter strips
with approximately 2% slope. On both ends of the project site, there are also
natural, woody vegetated areas, which provide for additional filtration and provide
a natural buffer area to both Quankey Creek and Little Marsh Swamp.
DESIGN CONSIDERATIONS FOR BEST MANAGEMENT PRACTICES
401 Extended Dry Detention Basins
The requirement to have a small permanent pool at the outlet orifice of the
detention basins to reduce clogging has not been met because other measures
have been provided to perform the same function. A trickle tube will be used in
place of the pool during construction. This rip-rap structure provides a 6-foot
clear radius around the outlet orifice of the basin. The tube will be constructed to
a height of 48". The trickle tube will be a temporary measure to address clogging
during construction. Because of the nature of the development, and the limited
access to the property, debris other than grass clippings should not be an issue
at this site. Due to the great distance runoff must travel to the outlet orifice of the
Runway Site Preparation 2 July 2004
basins, both over pavement and through grassed ditches, all debris should be
filtered out prior to reaching the outlet orifice of the basin.
A forebay to capture sediment and minimize clean-out problems was also not
provided in any of the basins. A forebay was not included because the majority
of sediment and pollutants will be filtered out through grass and rip-rip prior to
reaching the basin. Sediment that does enter the basin will settle out due to the
size and length of the basins being constructed. The inclusion of a forebay
would also create a safety hazard once operation of the Airport begins. A
forebay would result in standing water for long periods of time, which would
encourage vegetative growth and attract wildlife. For this reason, a dry detention
basin is being used in place of a wet basin, as well.
In addition, Sediment Basin No. 3 was not constructed at a 3:1 length to width
ratio because of constraints in the surrounding area. Extending the length of the
basin would have created impacts to jurisdictional waters and nearby wetlands.
A smaller basin more closely mimicking the surrounding grades, capable of
capturing the first inch of runoff and releasing it over 2 to 5 days, was designed to
avoid adverse and unnecessary impacts.
Level Spreaders and Filter Strips
Level Spreaders A and B do not meet the length requirements for Division of
Water Quality based on the flow going to the devices. The level spreaders were
designed based on the requirements of the Erosion and Sediment Control
Permit. This was done because of the limited area available at the end of the
grassed swales. Lengthening the level spreaders would have encroached upon
the natural vegetation near the edge of Quankey Creek, further increasing runoff
and decreasing the natural filtering capabilities of the area. Based on the small
drainage areas and the low percentage of impervious area, a shorter length of
level spreader was deemed the best possible solution.
The outfalls of both Level Spreader A and B lead to large, gently sloped areas
consisting of a mix of existing dense grass and vegetation with trees and shrubs
closer to the edge of Quankey Creek. These areas are approximately 300 feet
and 500 feet in length, respectively.
In addition to the level spreader and filter strip combinations at the end of the
future Runway, filter strips are being provided along the full length of the future
Runway and Taxiway system leading both into the pipe systems as well as into
the surrounding ditches. The grassed areas adjacent to the future Runway are
approximately 200 feet wide and range from 1 % to 3% running perpendicular to
the future pavement. The grassed area leading from the future parallel Taxiway
to the midfield drainage system is 100 feet wide and ranges from 1 % to 8%.
These filter strips provide pretreatment of the runoff entering the dry detention
basins and the surrounding grassed swales and assists in TSS removal.
Runway Site Preparation 3 July 2004
Grassed Swales
Numerous grassed swales have been provided throughout the area being
developed to assist in removing Total Suspended Solids resulting from Airport
operations. With a few exceptions, the swales have been routed to provide at
least 100 feet of length per acre of runoff. The most notable exceptions to this
are areas with a large amount of offsite area draining through the site.
Ditch Run 1, Ditch Run 5, and Ditch Run 10 each contain large areas of offsite
drainage and do not meet the length requirements for grassed swales.
Approximately 50 percent of the runoff conveyed by Ditch Run 1 and Ditch Run 5
consists of offsite drainage from predominately pervious areas. These areas
were not rerouted around the proposed grass swales to limit disturbance to
surrounding areas, which include wetlands, linear wetlands and perennial
streams. Rerouting the portions of Ditch Run 5 that carry offsite runoff also
would have resulted in increased Riparian Buffer Impacts. Ditch Run 10 only
conveys offsite runoff from entirely pervious areas. It is being constructed to
redirect an existing stream around the proposed development. The rerouted
ditch will mimic the existing conditions as closely as possible and therefore will
not meet the length requirements for grassed swales.
The maximum velocity requirement for TSS treatment in the grassed swales has
not been met in most cases. Because the majority of the swales are graded to
have slopes less than 1.0%, decreasing the slopes further to reduce the velocity
of the water was not deemed a reasonable solution. This most likely would lead
to standing water accumulating in the grassed swales, attracting wildlife and
hampering required maintenance.
Runway Site Preparation 4 July 2004
GEN
IRPORT PROPERTY
THER PROPERTY LINES
UTURE PAVEMENT
UNWAY PROTECTION ZONE
KISTING BUILDING
REE LINE
REEK, POND, LAKE
ROPOSED CONTOUR
ETLAND BOUNDARY
TERMITTENT STREAM
NEAR WETLAND
ERENNIAL STREAM
ROPOSED DRAINAGE AREAS
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HALIFAX-NORTHAMPTON REGIONAL AIRPORT
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Project No. DWQ
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
For projects with multiple basins, specify which basin this worksheet applies to: Sediment Basin No. 1
Drainage Area: 66.04 acres Percent Impervious Area: 32.28 %
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain 81,631 ft3
The basin length to width ratio is greater than 3:1.
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging.
An emergency drain to completely empty the basin is provided.
Vegetation plan prepared is specified on plans.
Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
aS Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for clean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
It- The 0&M agreement is signed by the responsible party and notarized.
Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 4
Sediment Basin No. 1
Hydrograph type = Reservoir
Storm frequency = 10 yrs
Inflow hyd. No. = 2
Reservoir name = Pond
Storage Indication method used.
Q (cfs)
280.00
Friday, Jul 2 2004, 1:57 PM
Peak discharge = 6.31 cfs
Time interval = 2 min
Max. Elevation = 129.54 ft
Max. Storage = 531,465 cuft
Hydrograph Volume = 778,454 cult
Sediment Basin No. 1
Hyd. No. 4 -- 10 Yr
240.00
200.00
160.00
120.00
80.00
40.00
0.00 --1-
0
6 12
Hyd No. 4
Hyd Volume
Vol (%)
100
86
71
57
43
29
14
I --- „ I I I 1 0
18 24 30 36 42 48 54 60
Time (hrs)
- Hyd No. 2 E l Req. Stor = 531,465 cult
. -
Project No. DWQ
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
For projects with multiple basins, specify which basin this worksheet applies to: Sediment Basin No. 2
Drainage Area: 34.11 acres Percent Impervious Area: 43.27 %
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain 54,410 0
The basin length to width ratio is greater than 3:1.
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging.
An emergency drain to completely empty the basin is provided.
Vegetation plan prepared is specified on plans.
Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
rAccess s for clean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
Z?:?The 0&M agreement is signed by the responsible party and notarized.

Project No. DWQ
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
For projects with multiple basins, specify which basin this worksheet applies to: Sediment Basin No. 3
Drainage Area: 43.00 acres Percent Impervious Area: 15.33 %
REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
0 capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain 29,340 fo
The basin length to width ratio is greater than 3:1.
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging.
An emergency drain to completely empty the basin is provided.
Vegetation plan prepared is specified on plans.
lid
Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
t? Access for clean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
IThe 0&M agreement is signed by the responsible party and notarized.
DWQ Project
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terri Bumpus Phone Number: ( 919 ) 954-1244
Level Spreader ID: A
Level Spreader Length 10 ft. (perpendicular to flow)
Drainage Area 11.12 ac. (on-site and off-site drainage to the level spreader)
Impervious Area 0.95 ac. (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope 5 % (6% for forested, leaf littler cover, 8% for thick ground cover)*
grass
Max. Discharge from a 10 Year Storm 9.35 cfs
Max. Discharge to Level Spreader 9.35 cfs
Filter Strip/Buffer Vegetation Grass & Forest (thick ground cover or grass, canopied forest with leaf litter
groundcover)
Pre-treatment or Bypass Method Grassed diversion ditch with check dams
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest with leaf
litter.
Pre-Form Scour Holes are on flat slopes only
No structures are located in protected buffers*
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of up to 25% in areas
with thick ground cover or grass if designed according to the Draft Level Spreader Design Option Document. This potentially requires a
minor variance in protected buffer areas. In any event the second level spreader cannot be located in Zone 1 of a protected buffer area.
DWQ Project No.
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
Level Spreader ID: B
Level Spreader Length 30 ft. (perpendicular to flow)
Drainage Area 3.83 ac. (on-site and off-site drainage to the level spreader)
Impervious Area 0.01 ac. (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope 5 % (6% for forested, leaf littler cover, 8% for thick ground cover)*
grass
Max. Discharge from a 10 Year Storm 6.76 cfs
Max. Discharge to Level Spreader 6.76 cfs
Filter Strip/Buffer Vegetation Grass & Forest (thick ground cover or grass, canopied forest with leaf litter
groundcover)
Pre-treatment or Bypass Method Grassed diversion ditch with check dams
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest with leaf
e litter.
fj Pre-Form Scour Holes are on flat slopes only
No structures are located in protected buffers*
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of up to 25% in areas
with thick ground cover or grass if designed according to the Draft Level Spreader Design Option Document. This potentially requires a
minor variance in protected buffer areas. In any event the second level spreader cannot be located in Zone 1 of a protected buffer area.
DWQ Project
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name : Halifax-Northampton Regional Airport, Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
Swale ID: see attached sheet
Grass Swale Length ft.
Tributary Drainage Area ac.
Impervious Area ac.
Max. Velocity from 2 Yr. Storm fps
Max. Velocity from 10 Yr. Storm fps
Min. side slopes ratio
Steepest Effective Slope ftift
(at least 100 ft. per tributary acre)
(on-site and off-site drainage to the swale)
(on-site and off-site drainage to the swale)
(2 fps max.)
(3:1 min.)
(check dams may be used)
Cover Crop
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. ffa
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
6 Vegetation Plan provided on plans
The underlying soils are permeable and non-compacted
Swale carries only stormwater flow
Water table depth is greater than 1 foot.
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
h'S Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
?? The operation and maintenance agreement signed and notarized by the responsible party is provided.

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DETENTION BASIN AND GRASSED SWALE
OPERATION AND MAINTENANCE AGREEMENT
The detention basin system is defined as the detention basin and pretreatment including
vegetated filter strips and grassed swales.
Maintenance activities of the basin shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the detention basin system for sediment accumulation, erosion,
trash accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the
pool occurs within 2 to 5 days as designed.
2. Repair eroded areas immediately, re-seed as necessary to maintain good
vegetative cover, mow vegetative cover to maintain a maximum height of six
inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap,
etc.) quarterly to maintain proper functioning.
4. Remove accumulated sediment from the detention basin system semi-annually
or when depth is reduced to 75% of the original design depth (see diagram
below). Removed sediment shall be disposed of in an appropriate manner and
shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
BASIN DIAGRAM
Sediment Removal Elevation - A 75%
------------------------------------------------------------ -------------- -
? Bottom Elevation - B 25% /
P
d Elevation
on A B
1 126.1 124.1
2 117.39 115.39
3 114.00 112.00
Page 1 of 3
.1 V
5. Remove cattails and other indigenous wetland plants.
6. If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain shall be minimized to the
maximum extent practical.
7. All components of the detention basin system shall be maintained in good
working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained
every six months. All accumulated sediment and debris shall be removed from
the structure, and a level elevation shall be maintained across the entire flow
spreading structure. Any down gradient erosion must be repaired and/or
replanted as necessary.
9. Annually, as a minimum, remove excess sediment, especially from the upstream
edge of grassed swales, to maintain original contours and grading.
10. At least once annually, repair any erosion and regrade the swale to ensure that
the runoff flows evenly in a thin sheet through the swale.
11. At least once annually, inspect vegetation and re-vegetate the swale to maintain
a dense growth of vegetation.
12. Grassed swales shall be mowed at least twice annually to a maximum height of
six inches.
I acknowledge and agree by my signature below that I am responsible for the
performance of the twelve maintenance procedures listed above. I agree to notify DWQ
of any problems with the system or prior to any changes to the system or responsible
patty. n
Print nar
Title: ,
Address
Phone:
Signatur
Date:
Li?(,r I
'L
N `1-'1 d 7 b
Page 2 of 3

I Lisa B. Vincent
a Notary Public for the
Halifax . do
hereby certify that lick Benton personally appeared before me
this 13th day of July 2004 , and acknowledge the due
execution of the forgoing detention basin maintenance requirements. Witness my hand
State of North Carolina , County of
and official seal.

SEAL
My commission expires 10/22/04
Page 3 of 3

WETLANDS/ 401 GROUP
STORMWATER MANAGEMENT PLAN
FOR JUL 2 T 2004
HALIFAX-NORTHAMPTON REGIONAL AIRPORT
WATER QUALITY SECTIO14
PROJECT DESCRIPTION AND PURPOSE
The new Halifax-Northampton Regional Airport is being developed to replace the
existing Halifax County Airport. The existing Airport is being restrained from its
full functional capability at its present development level. An expansion of the
existing Airport would require substantial housing and structure relocation and
would be cost prohibitive. The new Airport will allow for a runway with full
corporate airport length potential, space for aprons and hangars, a reduction of
noise impacts to developed areas and minimal land parcel acquisitions.
The Runway Site Preparation project will be the first phase of development for
the new Airport and will install all stormwater management features for the
ultimate development of the airport. It will consist of approximately 596,000 cubic
yards of unclassified excavation, disturbing 192 acres of Airport property. This
will include grading of the future runway, parallel taxiway, connector taxiways,
and apron for the Airport. The project also includes construction of three
permanent, dry, stormwater detention basins that will be utilized for sediment
control during construction.
EXISTING CONDITIONS
This project lies within the Tar-Pamlico and Roanoke River Basins. Land north of
SR 1619 drains to Quankey Creek and into the Roanoke River Basin. Land
south of SR1619 drains to Little Marsh Swamp and into the Tar-Pamlico River
Basin. The existing site is generally flat with an increasing drop in elevation
towards the existing waterways on either end of the site. The area was once
farmland, which was fertilized and treated with pesticides annually. Currently,
the area is over grown with tall grass and abandoned crops. There are isolated
stands of trees on the site and larger areas of forest around the perimeter of the
property.
Currently, storm water is generated from smaller sub-basins via a combination of
sheet flow, shallow concentrated flow, and concentrated flow. The runoff is
collected by and transported to the outfall through a system of abandoned farm
irrigation ditches and streams.
PROPOSED COLLECTION SYSTEMS
Although the current phase of construction for the new Airport will not create
additional impervious area, future phases of development will add approximately
52 acres of impervious surface. These new impervious areas will generate
Runway Site Preparation 1 July 2004
surface runoff, which will be removed via five networks of inlets and reinforced
concrete pipe, as well as a system of grass-lined channels.
The layout of the proposed collection system was developed through an iterative
process to achieve the most efficient removal of storm water runoff using the
least amount of materials to do so. StormCAD, software produced by Haestad
Methods, Inc., was selected for use in the design of the inlets and pipe. All
rainfall and sub-watershed data for each inlet in the proposed system were input.
STORMWATER QUALITY ANALYSIS
NCDENR requires that runoff from new developments must be controlled to
manage nonpoint source pollution. This is achieved by employing a series of
stormwater best management practices (BMPs) to achieve a removal of 85% of
total suspended solids (TSS). To control TSS during construction of the current
project and during regular use once construction has been completed, a series of
BMPs has been designed to meet the 85% requirement.
The majority of the runoff collection systems employed will consist of grass-lined
ditches. These ditches vary in slope from 0.3% to a maximum of 4.5%. The
ditches also contain multiple rock check dams, which will act to slow the
conveyance of water, enable infiltration, and trap suspended solids. The majority
of the ditches and pipe systems will flow into the three dry sediment basins,
which will aid TSS removal even further. Rip-rap aprons will be placed at the
outlet of the pipe systems that flow into and out of the sediment basins to
minimize channel erosion and lower the velocity of the water.
Level spreaders and filter strips will further treat ditches that do not empty into
sediment basins. The level spreaders will be seeded with grass to serve as the
filtering material with erosion control matting for added stability. At the outlet of
the level spreaders, water will sheet flow across relatively flat, grassed filter strips
with approximately 2% slope. On both ends of the project site, there are also
natural, woody vegetated areas, which provide for additional filtration and provide
a natural buffer area to both Quankey Creek and Little Marsh Swamp.
DESIGN CONSIDERATIONS FOR BEST MANAGEMENT PRACTICES
401 Extended Dry Detention Basins
The requirement to have a small permanent pool at the outlet orifice of the
detention basins to reduce clogging has not been met because other measures
have been provided to perform the same function. A trickle tube will be used in
place of the, pool during construction. This rip-rap structure provides a 6-foot
clear radius around the outlet orifice of the basin. The tube will be constructed to
a height of 48". The trickle tube will be a temporary measure to address clogging
during construction. Because of the nature of the development, and the limited
access to the property, debris other than grass clippings should not be an issue
at this site. Due to the great distance runoff must travel to the outlet orifice of the
Runway Site Preparation 2 July 2004
basins, both over pavement and through grassed ditches, all debris should be
filtered out prior to reaching the outlet orifice of the basin.
A forebay to capture sediment and minimize clean-out problems was also not
provided in any of the basins. A forebay was not included because the majority
of sediment and pollutants will be filtered out through grass and rip-rip prior to
reaching the basin. Sediment that does enter the basin will settle out due to the
size and length of the basins being constructed. The inclusion of a forebay
would also create a safety hazard once operation of the Airport begins. A
forebay would result in standing water for long periods of time, which would
encourage vegetative growth and attract wildlife. For this reason, a dry detention
basin is being used in place of a wet basin, as well.
In addition, Sediment Basin No. 3 was not constructed at a 3:1 length to width
ratio because of constraints in the surrounding area. Extending the length of the
basin would have created impacts to jurisdictional waters and nearby wetlands.
A smaller basin more closely mimicking the surrounding grades, capable of
capturing the first inch of runoff and releasing it over 2 to 5 days, was designed to
avoid adverse and unnecessary impacts.
Level Spreaders and Filter Strips
Level Spreaders A and B do not meet the length requirements for Division of
Water Quality based on the flow going to the devices. The level spreaders were
designed based on the requirements of the Erosion and Sediment Control
Permit.. This was done because of the limited area available at the end of the
grassed swales. Lengthening the level spreaders would have encroached upon
the natural vegetation near the edge of Quankey Creek, further increasing runoff
and decreasing the natural filtering capabilities of the area. Based on the small
drainage areas and the low percentage of impervious area, a shorter length of
level spreader was deemed the best possible solution.
The outfalls of both Level Spreader A and B lead to large, gently sloped areas
consisting of a mix of existing dense grass and vegetation with trees and shrubs
closer to the edge of Quankey Creek. These areas are approximately 300 feet
and 500 feet in length, respectively.
In addition to the level spreader and filter strip combinations at the end of the
future Runway, filter strips are being provided along the full length of the future
Runway and Taxiway system leading both into the pipe systems as well as into
the surrounding ditches. The grassed areas adjacent to the future Runway are
approximately 200 feet wide and range from 1 % to 3% running perpendicular to
the future pavement. The grassed area leading from the future parallel Taxiway
to the midfield drainage system is 100 feet wide and ranges from 1% to 8%.
These filter strips provide pretreatment of the runoff entering the dry detention
basins and the surrounding grassed swales and assists in TSS removal.
Runway Site Preparation 3 July 2004
Grassed Swales
Numerous grassed swales have been provided throughout the area being
developed to assist in removing Total Suspended Solids resulting from Airport
operations. With a few exceptions, the swales have been routed to provide at
least 100 feet of length per acre of runoff. The most notable exceptions to this
are areas with a large amount of offsite area draining through the site.
Ditch Run 1, Ditch Run 5, and Ditch Run 10 each contain large areas of offsite
drainage and do not meet the length requirements for grassed swales.
Approximately 50 percent of the runoff conveyed by Ditch Run 1 and Ditch Run 5
consists of offsite drainage from predominately pervious areas. These areas
were not rerouted around the proposed grass swales to limit disturbance to
surrounding areas, which include wetlands, linear wetlands and perennial
streams. Rerouting the portions of Ditch Run 5 that carry offsite runoff also
would have resulted in increased Riparian Buffer Impacts. Ditch Run 10 only
conveys offsite runoff from entirely pervious areas. It is being constructed to
redirect an existing stream around the proposed development. The rerouted
ditch will mimic the existing conditions as closely as possible and therefore will
not meet the length requirements for grassed swales.
The maximum velocity requirement for TSS treatment in the grassed swales has
not been met in most cases. Because the majority of the swales are graded to
have slopes less than 1.0%, decreasing the slopes further to reduce the velocity
of the water was not deemed a reasonable solution. This most likely would lead
to standing water accumulating in the grassed swales, attracting wildlife and
hampering required maintenance.
Runway Site Preparation 4 July 2004
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Project No. DWQ
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
For projects with multiple basins, specify which basin this worksheet applies to: Sediment Basin No.1
Drainage Area: 66.04 acres Percent Impervious Area: 32.28 %
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
n Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain 81.631 ft3
_ The basin length to width ratio is greater than 3:1.
The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging.
An emergency drain to completely empty the basin is provided.
Vegetation plan prepared is specified on plans.
Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for clean-out and maintenance is provided.
419 Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
kie Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
IS5 A site specific operation and maintenance plan with the following provisions is provided.
It- 43 The 0&M agreement is signed by the responsible party and notarized.
DWQ Stormwater Management Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
.' Hvdmaranh Plot
Hydraflow Hydrographs by Intelisotve Friday, Jul 2 2004, 1:57 PM
Hyd. No. 4
Sediment Basin No. 1
Hydrograph type = Reservoir Peak discharge = 6.31 cfs
Storm frequency = 10 yrs Time interval = 2 min
Inflow hyd. No. = 2 Max. Elevation = 129.54 ft
Reservoir name = Pond Max. Storage = 531,465 cuft
Storage Indication method used. Hydrograph Volume = 778,454 cult
Q (cfs)
280.00
240.00
200.00
160.00
120.00
80.00
40.00
Sediment Basin No. 1
Hyd. No. 4 -- 10 Yr
Vol (%)
100
86
71
57
43
29
14
0.00 1 0
0 6 12 18 24 30 36 42 48 54 60
Hyd No. 4 Hyd No. 2 E=-] Req. Stor = 531,465 cult Time (hrs)
Hyd Volume
Project No. DWQ
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
For projects with multiple basins, specify which basin this worksheet applies to: Sediment Basin No. 2
Drainage Area: 34.11 acres Percent Impervious Area: 43.27 %
11. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain 54,410 ft
The basin length to width ratio is greater than 3:1.
1,? The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging.
An emergency drain to completely empty the basin is provided.
Vegetation plan prepared is specified on plans.
1j Basin to be stabilized within 14 days of construction is specified.
VSediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for clean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
1VThe 0&M agreement is signed by the responsible party and notarized.
Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 7
Sediment Basin No. 2
Hydrograph type = Reservoir
Storm frequency = 10 yrs
Inflow hyd. No. = 6
Reservoir name = Pond Wizard Design
Storage Indication method used.
Q (cfs)
140.00
120.00
100.00
80.00
60.00
40.00
20.00
Friday, Jul 2 2004, 2:2 PM
Peak discharge = 7.10 cfs
Time interval = 2 min
Max. Elevation = 122.64 ft
Max. Storage = 320,100 cult
Hydrograph Volume = 510,590 cult
Sediment Basin No. 2
Hyd. No. 7 -- 10 Yr
0.00
0 5 10
Hyd No. 7
Hyd Volume
15 20 25 30 35 40 45
- Hyd No. 6 Req. Stor = 320,100 cuft
Vol (%
100
86
71
57
43
29
14
0
50 55
Time (hrs)

Project No. DWQ
DIVISION OF WATER QUALITY
401 EXTENDED DRY DETENTION BASIN WORKSHEET
DWQ Stormwater Management Plan Review:
At a minimum, a complete stormwater management plan submittal includes a worksheet for each BMP, design calculations, plans and
specifications showing all BMPs and outlet structure details, a detailed drainage plan and a fully executed operation and maintenance
agreement. An incomplete submittal package will result in a request for additional information and will substantially delay final review and
approval of the project
PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
For projects with multiple basins, specify which basin this worksheet applies to: Sediment Basin No. 3
Drainage Area: 43.00 acres Percent Impervious Area: 15.33 %
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of
Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space
provided to indicate the following design requirements have been met and supporting documentation is attached. If a requirement has not
been met, attach an explanation of why.
Applicants Initials
Either capture runoff from 1 yr., 24 hour storm and release over a 48 hour period, or
13-0 capture runoff from 1 inch storm and draw down over a period of 2 to 5 days.
Please provide routing for 1 yr. 24 hr. event or volume from 1 inch rain 29,340 ft3
The basin length to width ratio is greater than 3:1.
q6, The basin side slopes are no steeper than 3:1.
A small permanent pool at outlet orifice is provided to reduce clogging.
An emergency drain to completely empty the basin is provided.
16 Vegetation plan prepared is specified on plans.
Basin to be stabilized within 14 days of construction is specified.
Sediment storage (20% of detention volume) in addition to detention volume is provided.
Inlet and outlet erosion control measures to prevent scour are provided.
Additional treatment to meet the 85% TSS removal efficiency is provided.
Access for clean-out and maintenance is provided.
Inlet plunge pool or other energy dissipation is provided.
Forebay is provided to capture sediment and minimize clean-out problems.
Uncompacted natural soils are utilized to promote vegetation and reduce sedimentation.
Seasonal high water table is at least 1 foot below bottom of basin.
If used as a temporary sediment basin, plans indicate clean-out prior to final operation.
A site specific operation and maintenance plan with the following provisions is provided.
The 0&M agreement is signed by the responsible party and notarized.
Hydrograph Plot
Hydraflow Hydrographs by Intelisolve
Hyd. No. 5
Sediment Basin No. 3
Hydrograph type = Reservoir
Storm frequency = 10 yrs
Inflow hyd. No. = 4
Reservoir name = Pond Wizard Design
Storage Indication method used.
Q (cfs)
140.00
Sediment Basin No. 3
Hyd. No. 5 - 10 Yr
Friday, Jul 2 2004, 2:2 PM
Peak discharge = 18.71 cfs
Time interval = 2 min
Max. Elevation = 118.42 ft
Max. Storage = 299,987 cuft
Hydrograph Volume = 548,558 cult
120.00
100.00
80.00
60.00
40.00
20.00
0.00 -L
0
Vol (%)
100
86
71
57
43
29
14
I i -\ i I 0
5 10 15 20 25 30 35 40 45 50 55
Hyd No. 5 Hyd No. 4 D Req. Stor = 299,987 cult Time (hrs)
Hyd Volume
DWQ Project
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET
PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
Level Spreader ID: A
Level Spreader Length 10 ft. (perpendicular to flow)
Drainage Area 11.12 ac. (on-site and off-site drainage to the level spreader)
Impervious Area 0.95 ac. (on-site and off-site drainage to the level spreader)
Maximum Filter Strip/Buffer Slope 5 % (6% for forested, leaf littler cover, 8% for thick ground cover)*
grass
Max. Discharge from a 10 Year Storm 9.35 cfs
Max. Discharge to Level Spreader 9.35 cfs
Filter Strip/Buffer Vegetation Grass & Forest (thick ground cover or grass, canopied forest with leaf litter
groundcover)
Pre-treatment or Bypass Method Grassed diversion ditch with check dams
REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. if a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cis in canopied forest with leaf
n ? litter.
n Pre-Form Scour Holes are on flat slopes only
No structures are located in protected buffers*
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of up to 25% in areas
with thick ground cover or grass if designed according to the Draft Level Spreader Design Option Document. This potentially requires a
minor variance in protected buffer areas. In any event the second level spreader cannot be located in Zone 1 of a protected buffer area.
DWQ Project No.
DIVISION OF WATER QUALITY - LEVEL SPREADER WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name : Runway Site Preparation
Contact Person- Terry Bumous Phone Number: ( 919 ) 954-1244
Level Spreader ID: B
Level Spreader Length
Drainage Area
Impervious Area
Maximum Filter Strip/Buffer Slope
grass
Max. Discharge from a 10 Year Storm
Max. Discharge to Level Spreader
Filter StriplBuffer Vegetation
Pre-treatment or Bypass Method
REQUIRED ITEMS CHECKLIST
30 ft. (perpendicular to flow)
3.83 ac. (on-site and off-site drainage to the level spreader)
0.01 ac. (on-site and off-site drainage to the level spreader)
5 % (6% for forested, leaf littler cover, 8% for thick ground cover)*
6.76 cfs
6.76 cfs
Grass & Forest (thick ground cover or grass, canopied forest with leaf litter
groundcover)
Grassed diversion ditch with check dams
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
Applicants Initials
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest with leaf
p litter.
?J Pre-Form Scour Holes are on flat slopes only
No structures are located in protected buffers*
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of up to 25% in areas
with thick ground cover or grass if designed according to the Draft Level Spreader Design Option Document. This potentially requires a
minor variance in protected buffer areas. In any event the second level spreader cannot be located in Zone 1 of a protected buffer area.
11
DWQ Project No.
DIVISION OF WATER QUALITY - GRASSED SWALE WORKSHEET
1. PROJECT INFORMATION (please complete the following information):
Project Name : Halifax Northampton Regional Airport,Runway Site PreRaration
Contact Person: Terry Bumpus Phone Number: ( 919 ) 954-1244
Swale ID: see attached sheet
Grass Swale Length
Tributary Drainage Area
Impervious Area,
Max. Velocity from 2 Yr. Storm
Max. Velocity from 10 Yr. Storm
Min. side slopes
Steepest Effective Slope
Cover Crop
IL REQUIRED ITEMS CHECKLIST
ft.
ac.
ac.
fps
fps
ratio
ft/ft
(at least 100 ft. per tributary acre)
(on-site and off-site drainage to the swale)
(on-site and off-site drainage to the Swale)
(2 fps max.)
(3:1 min.)
(check dams may be used)
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. lfa
requirement has not been met attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
B Vegetation Plan provided on plans
ITts The underlying soils are permeable and non-compacted
Swale carries only stormwater flow
Water table depth is greater than 1 foot.
Plan details for the swale provided.
Plan details for the inlets and outlets are provided.
Check dams provided.
The operation and maintenance agreement includes annual erosion and vegetation repair, and at least twice
annual mowing.
?? The operation and maintenance agreement signed and notarized by the responsible parry is provided.
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DETENTION BASIN AND GRASSED SWALE
OPERATION AND MAINTENANCE AGREEMENT
The detention basin system is defined as the detention basin and pretreatment including
vegetated filter strips and grassed swales.
Maintenance activities of the basin shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the detention basin system for sediment accumulation, erosion,
trash accumulation, vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the
pool occurs within 2 to 5 days as designed.
2. Repair eroded areas immediately, re-seed as necessary to maintain good
vegetative cover, mow vegetative cover to maintain a maximum height of six
inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap,
etc.) quarterly to maintain proper functioning.
4. Remove accumulated sediment from the detention basin system semi-annually
or when depth is reduced to 75% of the original design depth (see diagram
below). Removed sediment shall be disposed of in an appropriate manner and
.shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
BASIN DIAGRAM
Sediment Removal Elevation - A 75%
------------------------------------------------------------ - ----
- ---------
Bottom Elevation - B 25% /
P
d Elevation
on A B
1 126.1 124.1
2 117.39 115.39
3. 114.00 112.00.
Page 1 of 3
5. Remove cattails and other indigenous wetland plants.
6. If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain shall be minimized to the
maximum extent practical.
7. All components of the detention basin system shall be maintained in good
working order.
8. Level spreaders or other structures that provide diffuse flow shall be maintained
every six months. All accumulated sediment and debris shall be removed from
the structure, and a level elevation shall be maintained across the entire flow
spreading structure. Any down gradient erosion must be repaired and/or
replanted as necessary.
9. Annually, as a minimum, remove excess sediment, especially from the upstream
edge of grassed swales, to maintain original contours and grading.
10. At least once annually, repair any erosion and regrade the swale to ensure that
the runoff flows evenly in a thin sheet through the swale.
11. At least once annually, inspect vegetation and re-vegetate the swale to maintain
a dense growth of vegetation.
12. Grassed swales shall be mowed at least twice annually to a maximum height of
six inches.
I acknowledge and agree by my signature below that I am responsible for the
performance of the twelve maintenance procedures listed above. I agree to notify DWQ
of any problems with the system or prior to any changes to the system or responsible
patty.
Print name:
Title:
Address
Phone:-
Signatu,r
Dal
1,4., -
G1a C?;, ? P
2 ?'Z?"33 ?' Rio
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C- Z.7 OW7 4
Page 2 of 3

Lisa B. Vincent
I, a Notary Public for the
State of North Carolina , County of Halifax do
hereby certify that Rick Benton personally appeared before me
this 13th day of July 2004 , and acknowledge the due
execution of the forgoing detention basin maintenance requirements. Witness my hand
and official seal.

SEAL
My commission expires 10/22/04
Page 3of3
of

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1
Coleen H. Sullins, Deputy Director
Division of Water Quality
June 18, 2004
Halifax-Northampton Regional Airport Authority
Attn: Mr. Rick Benton
P.O. Box 38
Roanoke Rapids, NC 27870-0038
Alan W. Klimek, P. E. Director
Division of Water Quality
DWQ Project # 04-0639
Halifax County
Page 1 of 4
Subject Property: Runway Site Preparation, Quentin Farm Road (SR1619), Halifax, NC
Little Quankey Creek [03-02-08, 23-30, C]
Marsh Swamp [03-03-04,28-79-30-1, C Sw NSW]
Approval of 401 Water Quality Certification and Authorization Certificate per the Tar-
Pamlico River Buffer Protection Rules (15A NCAC 2B,.0259) with Additional Conditions
Dear Mr. Benton:
You have our approval, in accordance with the attached conditions and those listed below, to
place fill within or otherwise impact 0.36 acres of wetlands, 280 feet of perennial stream, 1,642
feet of intermittent streams and 140,422 square feet (ft2) (or 3.22 acres) of protected riparian
buffers for the purpose of performing runway site preparation activities at the subject property,
as described within your application dated April 19, 2004 and received by the N.C. Division of
Water Quality .(DWQ) on April 21, 2004. After reviewing your application, we have decided
that the impacts are covered by General Water Quality Certification Number(s) 3402 (GC3402).
The Certification(s) allows you to use Nationwide Permit(s) 39 when issued by the US Army
Corps of Engineers (USACE). This letter shall also act as your approved Authorization
Certificate for impacts to the protected riparian buffers per 15A NCAC 2B .0259. In addition,
you should obtain or otherwise comply with any other required federal, state or local permits
before you go ahead with your project including (but not limited to) Erosion and Sediment
- Control and Non=discharge regulations. Also, this approval to proceed with your proposed
impacts or to conduct impacts to waters as depicted in your application shall expire upon
expiration of the 404 Permit. Please note that if the USACE requires an Individual Permit
for this project, then this approval is not valid and you will be required to apply for an
Individual Certification from the DWQ.
This approval is for the purpose and design that you described in your application. If you change
your project, you must notify us and you may be required to send us a new application. If the
property is sold, the new owner must be given a copy of this Certification and approval letter and
is thereby responsible for complying with all conditions. If total fills for this project (now or in
the future) exceed one acre of wetland or 150 linear feet of stream, compensatory mitigation may
N. C. Division of Water Quality, 401 Wetlands Certification Unit, '?
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (hfto://h2o.enr.state.ne.us/ncwetlands)
?....?,......., c,....:-- u. 4 Or C•nn M7Ao
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Halifax-Northampton Regional Airport Authority / DWQ No. 04-0639
Page 2 of 4
June 18, 2004
be required as described in 15A NCAC 211 .0506 (h). This approval requires you to follow the
conditions listed in the attached certification and any additional conditions listed below.
The Additional Conditions of the Certification are:
1. Impacts Approved - The following impacts are hereby approved as long as all of the other
specific and general conditions of this Certification (or Isolated Wetland Permit) are met. No
other impacts are approved including incidental impacts:
Amount Approved
(Units) Plan Location or Reference
Stream 280 (feet)
1,642 (feet) A
B, C & D
404 Wetlands 0.36 (acres) 1, 2, 3, 4, 5, 6 & 7
Waters 0 (acres) n/a
Buffers 140,422
(square ft.) -
2. Compensatory Mitigation (Final Plan Needed) - Mitigation must be provided for the
proposed impacts as specified in the table below. A final compensatory mitigation plan
must be approved in writing by this Office before any of the impacts approved herein
are conducted. Additionally, the compensatory mitigation plan must be completely
constructed and implemented according to the plans approved by this Office before any
permanent building or runway associated with the project is occupied or utilized. The
mitigation must be maintained according to the approved plan and permanently protected by
the use of conservation easements or similar protections. Any repairs or adjustments to the
mitigation site must be made according to the approved plan or must receive written approval
from this Office to make the repairs or adjustments.
Compensatory Credit Mitigation Required
Stream 280 (feet)
Wetlands 0 (acres)
Waters 0 (acres)
Buffers 315,838 (square feet)
Please note that'the proposed riparian buffer restoration will need to comply with 15A NCAC
02B .0260(9). Also, any tree planting should use a random method and not a grid pattern and
will need to include at least two different native hardwood tree species at a density of 320
trees per acre. Any conservation easements or other references to the Wetland Restoration
Program need to be reference instead to the Ecosystem Enhancement Program.
3. Written Stormwater Management Plan (Final Plan Needed) - An additional condition is
that a final, written stormwater management plan (including a signed and notarized
Operation and Maintenance Agreement) shall be approved in writing by this Office before
the impacts specified in this Certification occur per Condition No. 4 in GC No. 3402. The
stormwater management plan must include plans and specifications for stormwater
Halifax-Northampton Regional Airport Authority / DWQ No. 04-0639
Page 3 of 4
June 18, 2004
management facilities that are appropriate for surface waters classified as Class C and
designed to remove 85% TSS according to the most recent version of the NC DENR
Stormwater Best Management Practices Manual. These facilities must be designed to treat
the runoff from the entire project, unless otherwise explicitly approved by the Division of
Water Quality. Also, before any permanent building is occupied at the subject site, the
facilities (as approved by this Office) shall be constructed and operational, and the
stormwater management plan (as approved by this Office) shall be implemented. The
structural stormwater practices as approved by this Office as well as drainage patterns must
be maintained in perpetuity. No changes to the structural stormwater practices shall be made
without written authorization from the Division of Water Quality.
Please note that the plan must include the use of either extended detention wetlands, bio-
retention areas or ponds followed by forested filter strips (designed according to the latest
version of the NC DENR Stormwater Best Management Practices Manual).
4. Erosion & Sediment Control Practices - Erosion and sediment control practices must be in
full compliance with all specifications governing the proper design, installation and operation
and maintenance of such Best Management Practices in order to protect surface waters
standards:
a. The erosion and sediment control measures for' .the project must be designed,
installed, operated, and maintained in accordance with the most recent version of the
North Carolina Sediment and Erosion Control Planning and Design Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion
control measures must be such that they equal, or exceed, the requirements specified
in the most recent version of the North Carolina Sediment and Erosion Control
Manual. The devices shall be maintained on all construction sites, borrow sites, and
waste pile (spoil) projects, including contractor-owned or leased borrow pits
associated with the project.
c. For borrow pit sites, the erosion and sediment control measures must be designed,
installed, operated, and maintained in accordance with the most recent version of the
North Carolina Surface Mining Manual.
d. The reclamation measures and implementation must comply with the reclamation in
accordance with the requirements of the Sedimentation Pollution Control Act.
5. - " No Waste,'Spoil; Solids; or Fill of AnyKind - No w8te,'spoil, solids, or fill of any kind
shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts
depicted in the Pre-Construction Notification. All construction activities, including the
design, installation, operation, and maintenance of sediment and erosion control Best
Management Practices, shall be performed so that no violations of state water quality
standards, statutes, or rules occur.
6. No Sediment & Erosion Control Measures w/n Wetlands or Waters - Sediment and
erosion control measures shall not be placed in wetlands or waters to the maximum extent
practicable. If placement of sediment and erosion control devices in wetlands and waters
is unavoidable, they shall be removed and the natural grade restored within six months of
the date that the Division of Land Resources has released the project. Any erosion and
Halifax-Northampton Regional Airport Authority / DWQ No. 04-0639
Page 4 of 4
June 18, 2004
sediment control devices placed within wetlands or waters must comply with N.C. Water
Quality Certification regulations (15A NCAC 02H .0500).
7. Certificate of Completion - Upon completion of all work approved within the 401
Water Quality Certification or applicable Buffer Rules, and any subsequent
modifications, the applicant is required to return the attached certificate of completion to
the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service
Center, Raleigh, NC, 27699-1650.
Violations of any condition herein set forth may result in revocation of this Certification and may
result in criminal and/or civil penalties. The authorization to proceed with your proposed
impacts or to conduct impacts to waters as depicted in your application and as authorized by this
Certification, shall expire upon expiration of the 404 or CAMA Permit.
If you do not accept any of the conditions of this Certification (associated with the approved
wetland or stream impacts), you may ask for an adjudicatory hearing. You must act within 60
days of the date that you receive this letter. To ask for a hearing, send a written petition, which
conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its
conditions are final and binding unless you ask for a hearing.
Any disputes over determinations regarding this Authorization Certificate (associated with the
approved buffer impacts) shall be referred in writing to the Director for a decision. The
Director's decision is subject to review as provided in Articles 3 and 4 of G.S. 150B.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean
Water Act and the Tar-Pamlico riparian buffer protection rule as described within 15A NCAC
2B .0259. If you have any questions, please telephone John Dorney at 919-733-9646 or Bob
Zarzecki at 919-733-9726.
Sincerely,
_ ? f
Alan W. Klimek, P.E.
AWK/bz --
Enclosures: GC 3402
Certificate of Completion
cc: Terry Bumpus, The LPA Group of NC, 4904 Professional Court, Suite 201, Raleigh, NC 27069
USACE Raleigh Regulatory Field Office
DWQ Raleigh Regional Office
DLR Raleigh Regional Office
File Copy
Central Files
Filename: 040639
MEMORANDUM
TO: John Dorney Regional Contact:
Non-Discharge Branch WO Supervisor:
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Halifax-Northampton Regional Airport Runway
Project Number 04 0639
Recvd From APP
County Halifax
County2
Region Raleigh
Received Date 4/21/04 Recvd By Region
Project Type site preparation runway
Certificates Stream
Permit Wetland Wetland Wetland Stream Class Acres
Type Type Impact Score Index Prim. supp. Basin Req.
Stream Impacts (ft.)
Feet
Req.
,, fresh?este O O N F ?3-30 C F_ 30?0?. n.3h 19??.00 280.00 1,642.0
TPBR Bufte, s O ? O ^+ F_ F_ F_ F_ F, 0,2 0S. ?. 2 2F-
r r
Mitigation Wetland
MitigationType Type Acres Feet
Is Wetland Rating Sheet Attached? Q Y 0 N Did you request more info? Q Y Q N
Have Project Changes/Conditions Been Discussed With Applicant? Q Y O N
Is Mitigation required? Q Y Q N Recommendation: Q Issue O Issue/fond 0 Deny
Provided by Region: Latitude (ddmmss) 361947 Longitude (ddmmss) 773807
Comments:
June 2, 2004
Baste looks VG. Impacts have been minimized as much as possible other than the no build
alternative. Restoration and conservation plans look alright. Need to mention that tree planting
not grid like but random and restoration rate is 320 per acre at the end of We years. Easement
documant needs changes from WRP to EEP, address, etc. Buffer restoration plan is req e g
credit for a Zone 1 area that is only 25 feet wide on the east side of the stream. Fine w/me since
west side is 200 but calc's need to be checked. Additionally, all of the stream impact is NOT in the
TP_
cc: Regional Office
Central Office Page Number 1
THE LPA GROUP of North Carolina,
Transportation Consultants
4904 Professional Court, Suite 201
Raleigh, North Carolina 27609
[phone]
FAX [phone]
p.a. r 1
May 18, 2004 ??vJ LJ
North Carolina Department of Environment and Natural Resources
Division of Water Quality
3800 Barrett Drive
Raleigh, North Carolina 27609
Re: Halifax-Northampton Regional Airport
Runway Site Preparation
Dear Steve:

r"
r?F „ }

Enclosed please find seven copies of the Wetland and Stream Mitigation Plan, as well
as all accompanying drawings for the above referenced project. This Plan is being
submitted as a supplement to the Pre-Construction Notification Application for a Section
404 Permit as well as Section 401 Water Quality Certification and approval of Riparian
Buffer impacts. The PCN Application was submitted to DWQ and the Corps of
Engineers on April 20, 2004.
If you have any questions or need additional information, please do not hesitate to call.
Sincerely,
THE LPA GROUP of North Carolina, p.a.
WETLANDS/ 401 GROUP
.u MAY 2 5 2004
Brigid Z. Williams, E.I.T. WATER QUALITY SECTION
Design Engineer
Enclosures
Member of THE LPA GROUP INCORPORATED
ATLANTA, GA - BATON ROUGE, LA - CHARLESTON, SC - CHARLOTTE, NC - CHICAGO, IL - COLUMBIA SC - GREENSBORO, NC - KNOXVILLE, TN
MOBILE, AL - MYRTLE BEACH, SC - ORLANDO, FL ¦ RALEIGH, NC ¦ RICHMOND, VA - SARASOTA, FL - TA-LN-IASSEE, FL - TAMPA, FL - WEST PALM BEACH, FL
HALIFAX-NORTHAMPTON REGIONAL AIRPORT
WETLAND AND STREAM MITIGATION PLAN
Construction of the new Airport facility in Halifax County will impact 0.36 acres of
wetlands, 280 linear feet of an un-named perennial tributary to Quankey Creek, and 1,642
linear feet of intermittent streams. The wetlands that will be impacted are low quality
wetlands consisting of former farm ponds and naturalized ditches. The streams are
located in former agricultural fields, have been channelized, and currently do not have a
vegetated buffer. During an onsite meeting with the U.S. Army Corps of Engineers
(USACE) and the North Carolina Department of Environment and Natural Resources,
Division of Water Quality (DWQ) on March 16, 2004, the determination was made that
the channelized intermittent streams do not provide important biological functio? nos
therefore, mitigation will not be required for those impacts. Following is a nss
avoidance and minimization efforts, and proposed compensatory tgatr° for"r-
unavoidable wetland and stream impacts.' ;
Avoidance
An Environmental Assessment (EA) was prepared to evaluate potential exp sin P'the
existing Airport facility and to identify potential new Airport sites. Sixtee ?altern aes
were initially evaluated, and because of potential environmental impacts, 1 c 1t rnattiives E
were eliminated from further consideration. Five build alternatives and :"no-build "..',
alternative were evaluated in the EA prior to selecting a Preferred Alterna 'Q. One-of-
these alternatives involved expanding the existing Airport facility, and the remaining four
alternatives were located at three different sites in close proximity to I-95. Because of the
abundance of wetlands and streams in this portion of the County, total avoidance was not
possible. However, the Preferred Alternative would result in the least amount of
environmental impacts. The initial grading plans developed for the Preferred Alternative
involved stream and wetland impacts associated with the construction of sediment basins.
Changes to the design of the sediment basins were made and the basins were relocated to
avoid impacts to streams and nearby wetlands.
Minimization
Side slopes on ditches and fill slopes were steepened from 4:1 to 3:1 slopes in order to
minimize the disturbed area and avoid impacts to adjacent wetlands. Where ditches were
required to be located adjacent to, or, in the edges of wetlands, the soil adjacent to the
ditches will be compacted and a low berm constructed adjacent to the ditches to prevent
inadvertent wetland draining. Additionally, Best Management Practices will be utilized
during construction to minimize impacts to adjacent streams and wetlands. This may
include but is not limited to the use of silt fencing, straw bales, and seeding and mulching
of side slopes, as appropriate.
Compensation
Onsite wetland mitigation will consist of wetland restoration, which will involve
replanting a 1.5-acre onsite wetland with native hardwood tree species (refer to Figure 1).
The construction project will impact 0.36 acres of predominantly low quality wetlands
and the proposed onsite wetland restoration will provide a 4:1 mitigation ratio.
1
The proposed wetland restoration site is formerly part of an agricultural field that was
historically planted in soybeans. The wetland is currently dominated by herbaceous
wetland species including bushy seedbox (Ludwigia alternifolia), soft rush (Juncus
effusus), broom panic grass (Dichanthelium scoparium), and wool grass (Scirpus
cyperinus), with a few elderberry (Sambucus canadensis) saplings along the western
edge. The top 10 inches of soil in the wetland consists of a sandy loam (10YR 5/1) and
the layer from 10 to 20 inches is a sandy clay loam (10YR 6/1). During a site visit on
March 16, 2004, standing water with a depth of 6 inches was observed in a portion of the
wetland. The soil in the remainder of the wetland was saturated to the surface and many
oxidized root channels were evident. The wetland is situated at the toe of a slope and the
source of hydrology appears to be from surface runoff and groundwater, perched on the
clayey sub-soil.
To compensate for impacts to the channelized perennial stream, a 7.25-acre buffer area
will be planted with native hardwood tree species along a 1,485 linear foot section of two
perennial streams, located on Airport property south of SR 1619 (refer to Figure 1). The
proposed stream buffer site is located along a portion of Little Marsh Swamp and one of
its tributaries, both of which are in the Tar-Pamlico River basin. This will provide water
quality benefits to the streams by creating a forested buffer between the streams and
proposed future development areas at the Airport, in an area that currently consists of
former agricultural fields vegetated with herbaceous species.
Trees seedlings will be planted in the wetland restoration site and stream buffer on 10-
foot centers, in rows spaced 10 feet apart, which will initially provide a total of 436 trees
per acre (refer to Figures 2 and 3). A total of 654 trees will be planted in the wetland
restoration site and 3,161 trees will be planted in the stream buffer. The trees will be
planted by hand to avoid disturbance to the soil. Based on observations made during the
field investigations on Airport property, the following tree species are proposed for
planting in the mitigation sites.
Proposed Tree Species
Common Name Species
Willow oak uercus hellos
Black gum Nyssa sylvatica
Water oak Quercus ni a
Overcup oak Quercus lyrata
Upon completion of the tree plantings, the restored wetland and stream buffer will be
protected through the establishment of conservation easements (refer to attached
example). An as-built report will be prepared which will include copies of the finalized
conservation easements, site maps, a write-up detailing the planting process and any
2
problems encountered, and photographic documentation to be taken at permanent
photographic stations that will be established within the wetland restoration site and
stream buffer.
Monitoring and Success Criteria
The wetland restoration site and stream buffer site will be monitored annually for five
years following completion of the site plantings. Sampling will occur near the end of the
growing season and a report detailing the findings of the sample events will be prepared
for submission to the USACE and DWQ. Permanent sample plots will be randomly
established in each of the mitigation sites and surviving tree species will be counted
within those plots to determine the percent survivability of the planted tree species. A
comprehensive list of volunteer plant species will also be recorded and reported.
Additionally, observations on the hydrology in the wetland restoration site will be made
during the sampling events. Photographic documentation of the site conditions will be
included in the annual reports.
Success will be achieved when at the end of the five-year monitoring period 260 of the
planted trees per acre survive. Data collected during the monitoring events will be
evaluated to determine what if any adjustments need to be undertaken at the wetland
restoration site and stream buffer to insure success of the mitigation sites. This may
include replanting of trees and/or the removal of invasive species that could potentially
hinder the development of the planted species. Although alterations to the hydrology of
the wetland mitigation site are not included in the proposed mitigation, alterations in the
surface flow to enhance the mitigation site hydrology may be appropriate to ensure the
survival of the planted trees.
3
NORTH CAROLINA WETLANDS RESTORATION PROGRAM
GENERIC CONSERVATION EASEMENT
DRAFTTEXT
STATE OF NORTH CAROLINA
CONSERVATION EASEMENT
COUNTY
THIS CONSERVATION EASEMENT DEED, made this .day of _, 1999, by and between ,
Grantor, and the State of North Carolina, Grantee, whose mailing address is
State of North Carolina State Property Office, 116 West Jones Street, Raleigh,
NC 27603-8003. The designations Grantor and Grantee as used herein shall include
said parties, their heirs, successors, and assigns, and shall include singular,
plural, masculine, feminine, or neuter as required by context.
WITNESSETH:
WHEREAS, pursuant to the provisions of N.C. Gen. Stat. § 143-214.8 et seq., the
State of North Carolina has established the Wetlands Restoration Program (as
defined in N.C. Gen Stat. § 143-214.8) within the Department of Environment and
Natural Resources for the purposes of acquiring, maintaining, restoring,
enhancing, and creating wetland and riparian resources that contribute to the
protection and improvement of water quality, flood prevention, fisheries,
aquatic habitat, wildlife/habitat, and recreational opportunities; and
WHEREAS, the Wetlands Restoration Program in the Department of Environment and
Natural Resources has approved acceptance of this instrument; and
WHEREAS, the acceptance of this instrument for and on behalf of the State of
North Carolina has been duly approved by the Governor and Council of State by
resolution adopted at a meeting held in the City of , North Carolina, on the _
day of _, 1999; and
WHEREAS, pursuant to the provisions of N.C. Gen. Stat. § 143-214.8, two of the
components of the Wetlands Restoration Program are (1) restoration and perpetual
maintenance of wetlands, riparian areas, and surface waters and (2) land
ownership and management; and
WHEREAS, Grantor owns in fee simple certain real property situated, lying, and
being in
County, North Carolina (the "Protected Property"), and being more particularly
described as that certain parcel of
land located as described in Deed Book _at Page of the County
Registry and
being in Township, County, North Carolina; and
WHEREAS, Grantor is willing to grant a Conservation Easement on the Protected
Property, thereby restricting and limiting the use of the Protected Property to
the terms and conditions and for the purposes hereinafter set forth, and Grantee
is willing to accept such easement;
NOW, THEREFORE, in consideration of the mutual covenants, terms,
conditions, and restrictions
hereinafter set forth, Grantor unconditionally and irrevocably hereby grants and
conveys unto Grantee, its successors
and a9stgns, forever and in perpetuity, a Conservation Easement of the nature
and character and to the extent
hereinafter set forth, for the benefit of the people of North Carolina, over the
portion of the Protected Property being
all of the tracts of land as identified as as shown on a plat of survey
entitled " dated
and certified by _ and recorded in Map Book _, Page County Registry, and being
more
particularly described as follows:
[Insert Metes and Bounds Description]
The purposes of this Conservation Easement are to maintain, restore, enhance,
and create a wetland and/or riparian resource on the Protected Property that
contributes to the protection and improvement of water quality, flood
prevention, fisheries-, aquatic habitat, wildlife habitat, and recreational
opportunities; to maintain permanently the Protected Property in its natural
condition, consistent with these purposes; and to prevent any use of the
Protected Property that will significantly impair or interfere with these
purposes. To achieve these purposes, the following conditions and restrictions
are set forth:
1. DURATION OF EASEMENT
This Conservation Easement shall be perpetual. It is an easement in gross, runs
with the land, and is enforceable by Grantee against Grantor, its personal
representatives, heirs, successors, and assigns, lessees, agents, and licensees.
II. RESERVED USES AND RESTRICTED ACTIVITES
The Protected Property shall be restricted from any development or usage that
would impair or interfere with the purposes of this Conservation Easement.
Unless expressly reserved as a compatible use herein, any activity on, or use
of, the Protected Property by the Grantor is prohibited as inconsistent with the
purposes of this
Conservation Easement. Any rights not expressly reserved hereunder by the
Grantor have been acquired by the Grantee. The following specific uses are
prohibited, restricted, or reserved as indicated:
A. Recreational Uses. Grantor expressly reserves the right to undeveloped
recreational uses, including hunting, fishing, and hiking, and access to the
Protected Property for the purposes thereof Usage of motorized vehicles on the
Protected Property is prohibited.
B. Educational Uses. The Grantor reserves the right to passive educational
uses and the right of access to the Protected Property for such purposes
including organized educational activities such as site visits, studies, and
observations.
C. Vegetative Cutting. Cutting, removal, mowing, harming, or destruction of
any vegetation on the Protected Property is prohibited.
D. Industrial Use. Industrial activities on the Protected Property are
prohibited.
E. Residential Use. Residential use of the Protected Property is
prohibited.
F. Commercial Use. Commercial activities on the Protected Property are
prohibited.
G. Agricultural Use. Agricultural use of the Protected Property including use
for cropland, waste lagoons, or pastureland is prohibited.
H. New Construction. There shall be no building, facility, mobile home, or
other structure constructed or placed on the Protected Property.
I. Signs. No signs shall be permitted on the Protected Property except
interpretive signs describing restoration activities and the conservation values
of the Protected Property, signs identifying the owner of the Protected Property
and the holder of the Conservation Easement, and signs giving directions or
proscribing rules and regulations for the use of the Protected Property.
J. Dumping. Dumping of soil, trash, ashes, garbage, waste, abandoned
vehicles, appliance or machinery, or other material on the Protected Property is
prohibited.
K. Grading, Mineral Use, Excavation, Dredging. There shall be no grading,
filling, excavation, (dredging, mining, or drilling; no removal of topsoil,
sand, gravel, rock, peat, minerals, or other materials.
L. Water Quality and Drainage Patterns. There shall be no diking, draining,
dredging, channeling, filling, leveling, pumping, impounding or related
activities, or altering or tampering with water control structures or devices,
or disruption or alteration of the restored, enhanced, or created drainage
patterns. In addition, diverting or causing or permitting the diversion of
surface or underground water into, within or out of the easement area by any
means, removal of wetlands, polluting or discharging into waters, springs,
seeps, or wetlands, or use of pesticide or biocides is prohibited.
M. Development Rights. No development rights which have been encumbered or
extinguished by this Conservation Easement shall be transferred pursuant to a
transferable development rights scheme or cluster development arrangement or
otherwise.
The Grantee, and authorized representatives of the Grantee, shall have the right
to enter the Protected Property and shall have the right of reasonable ingress
and egress to the Protected Property over the Grantor's property, at all
reasonable times to undertake any activities to restore, manage, maintain,
enhance, and monitor the wetland and riparian resources of the Protected
Property. These activities include planting of trees, shrubs and
herbaceous vegetation, installation of monitoring wells, utilization of heavy
equipment to grade, fill, and prepare the soil, modification of the hydrology of
the site, and installation of natural and marimade materials as needed to direct
in-stream, above ground, and subterraneous water flow. In addition, the Grantee,.
and authorized representatives of the Grantee, shall have the right to enter the
Protected Property and shall have the right of reasonable ingress and egress to
the Protected Property over the Grantor's property, at all reasonable times for
the purpose of inspecting said property to determine if the Grantor is complying
with the terms, conditions, restrictions, and purposes of this Conservation
Easement. The easement rights granted herein do not include public access
rights.
The Grantor may request permission to vary from the above restrictions for good
cause shown, provided that any such request is consistent with the purposes of
this Conservation Easement. Ile Grantor shall not vary from the above
restrictions without first obtaining written approval from the Wetlands
Restoration Program, whose mailing address is 512 N. Salisbury Street, P.O. Box
29535, Raleigh, NC 27626-0535.
III. ENFORCEMENT AND REMEDIES
A. In the event that Grantee determines that Grantor has violated or is
threatening to violate any of
these terms; conditions, or restrictions, the Grantee may institute a suit to
enjoin such violation and
if necessary, to require the restoration of the Protected Property to its prior
condition at the
Grantor's expense.
B. No failure on the part of Grantee to enforce any covenant or
provision hereof shall discharge or
invalidate such covenant or any other covenant, condition, or provision hereof
or affect the right to
Grantee to enforce the same in the event of a subsequent breach or default.
IV. MISCELLANEOUS
A. This Conservation Easement shall be construed to promote the
purposes of N.C. Gen Stat. § 143-
214.8&A jg_q, the Wetlands Restoration Program.
B. This instrument sets forth the entire agreement of the parties with
respect to the Conservation
Easement and supersedes all prior discussions, negotiations, understandings or
agreements relating
to the Conservation Easement. If any provision is found to be invalid, the
remainder of the
provisions of the Conservation Easement, and the application of such provision
to persons or
circumstances other than those as to which it is found to be invalid, shall not
be affected thereby.
C. Any notices shall be sent by registered or certified mail, return
receipt requested to the parties at
their addresses shown above or to other address(es) as either party establishes
in writing upon
potification to the other.
D. Grantor shall notify Grantee in writing of the name and address and
any party to whom the
Protected Property or any part thereof is to be transferred at or prior to the
time said transfer is
made. Grantor further agrees to make any subsequent lease, deed, or other legal
instrument by
which any interest in the Protected Property is conveyed subject to the
Conservation Easement
herein created.
V. QUIET ENJOYMENT
Grantor reserves all rights accruing from ownership of the Protected Property,
including the right to engage in or permit or invite others to engage in only
those uses of the Protected Property that are
expressly reserved herein, not prohibited or restricted herein, and are not
inconsistent with the purposes of this Conservation Easement. Without limiting
the generality of the foregoing, Grantor expressly reserves to Grantor, and
Grantor's invitees and licensees, the right of access to the Protected Property,
and the right of quiet enjoyment of the Protected Property.
TO HAVF, AND TO HOLD the said rights and easements perpetually unto Grantee for
the aforesaid purposes.
AND Grantor covenant that they are seized of said premises in fee and have the
right to convey the permanent easement herein granted; that the same are free
from encumbrances and that they will warrant and defend title to the same
against the claims of all persons whomsoever.
IN TESTIMONY WHEREOF, the Grantor has hereunto set his hand and seal, the day
and year first above written,
(SEAL)
(SEAL)
(SEAL)
(SEAL)
NORTH CAROLINA COUNTY OF
I, a Notary Public in and for the
County and State aforesaid, do hereby certify that
Grantor, personally appeared before me this day and acknowledged the execution
of the foregoing
instrument.
IN WITHNESS WHEREOF, I have hereunto set my hand and Notarial
Seal this the day of 11999.
Notary Public
My commission expires:

Triage Check List
Date: Project Name. r
DWQ#: 0 'YC? 3
County:
To ? ARO Mike Parker ' ? WaRO Tom Steffens
? FR.O Ken Averitte ? WiRO Noelle Lutheran
? MRO Alan Johnson ? WSRO Daryl Lamb
RRO Steve Mitchell
.From: n Telephone : (919)
The file attached is being forwarded to your for your evaluation.
Please call if you need assistance. .

? Stream length impacted
? Stream determination
? Wetland determination and distance to blue-line surface waters on USFW topo maps
? Minimization/avoidance issues
? Buffer Rules (Meuse, Tar-Pamlico, Catawba, Randleman)
? Pond fill
? Mitigation Ratios
? Ditching
? Are the stream and or wetland mitigation sites available and viable?
? Check drawings for accuracy
? Is.the application consistent with pre-application meetings?
? Cumulative impact concerns
THE LPA GROUP of North Carolina, p.a.
Transportation Consultants
4904 Professional Court, Suite 201
Raleigh, North Carolina 27609
[phone]
FAX [phone]
April 20, 2004
Nk
Mr. Steve Mitchell
North Carolina Department of Environment and Natural Resources
Division of Water Quality
3800 Barrett Drive
Raleigh, North Carolina 27609 WETLANDS 1401 GROUP
Re: Halifax-Northampton Regional Airport
Runway Site Preparation
APR 2 1 2004
WATER QUALITY SECTION
Dear Steve:
Enclosed please find seven copies of the Pre-Construction Notification Application Form
as well as all accompanying drawings for the above referenced project. This
Application is being submitted for a Section 404 Permit as well as Section 401 Water
Quality Certification and approval of Riparian Buffer impacts.
The Runway Site Preparation project includes grading of the future runway, parallel
taxiway, connector taxiways, and apron for the new Halifax-Northampton Regional
Airport. The project also includes construction of three dry sediment basins to capture
on-site runoff of all future development.
Also enclosed, please find check number 69, in the amount of $475.00, to cover the fee
for plan review.
If you have any questions or need additional information, please do not hesitate to call.
Sincerely,
THE LPA GROUP of North Carolina, p.a.
Brigid Z. Williams, E.I.T.
Design Engineer
Enclosures
Member of THE LPA GROUP INCORPORATED
ATLANTA, GA ¦ BATON ROUGE, LA • CHARLESTON, SC • CHARLOTTE, NC • CHICAGO, IL • COLUMBIA, SC ¦ GREENSBORO, NC • KNOXVILLE, TN
MOBILE, AL • MYRTLE BEACH, SC • ORLANDO, FL • RALEIGH, NC . RICHMOND, VA • SARASOTA, FL • TALLAHASSEE, FL • TAMPA, FL • WEST PALM BEACH, FL
- •-Y
k ,Tice Use Only: Form Version May 2002
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit ® Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested:
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
WETLANDS / 401 GROUP
II. Applicant Information
1. Owner/Applicant Information APR 2 1 2004
Name: Mr. Rick Benton
Mailing Address: Halifax-Northampton Regional Airport A BAUALITY SECTION
P.O. Box 38
Roanoke Rapids, North Carolina 27870-0038
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail] (Rick Benton)
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Mr.TM Bum_pus
Company Affiliation: The LPA GROUP of North Carolina, p.a.
Mailing Address: 4904 Professional Court
Suite 201
Raleigh, North Carolina 27609
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: tbumpusna 1, pagroup.com (Tent' Bum-pus)
Page 5 of 14
III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Runway Site Preparation
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN):
4. Location
County: Halifax Nearest Town: Roanoke Rapids
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers, landmarks, etc.): Exit I-95 at Exit 168. Go east on
SR 903 Turn right on SR 1618 (Grapevine Road). Turn left on SR 1619 (Quentin Farm
Road) SR 1619 bisects the proposed site.
5. Site coordinates, if available (UTM or Lat/Long): 36'19'47.252"N/77'38'06.831"E
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): 870,
7. Nearest body of water (stream/river/sound/ocean/lake): ,Quankey Creek & Little Marsh
Swamp
8. River Basin: Tar-Pamlico and Roanoke
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: The existing site is generally flat with an increasing drop in
Page 6 of 14
elevation towards the existing waterways on either end of the site. The area was once
farmland and is currently over gown with tall grass and abandoned crops. There are isolated
stands of trees on the site and larger areas of forest around the perimeter of the property.
10. Describe the overall - proj ect in detail, including the type of equipment to be used: This
project will consist of approximately 596,000 cubic yards of unclassified excavation,
disturbing approximately 192 acres on the Airport property. This will include grading of the
future runway, parallel taxiway, connector taxiways and apron for the Airport. The
project also includes construction of three permanent dry sediment basins to capture on-site
runoff. All off site runoff will be routed around the sediment ponds
11. Explain the purpose of the proposed work:
The existing Halifax County AiMort is an active facility with one paved runway of 75' width
and 4,006' length A second turf runway of 2,465' length is also available. The airport has
approximately 23 based aircraft and is frequently utilized by corporate jets given appropriate
weather conditions Even with the aviation activity cited it has become increasingly clear
that the existing _facility is being restrained from its full functional capability at its present
development level To approach forecasted aviation activity, either substantial expansion of
the existing airport will be required or a totally new airport developed.
As an initial step in evaluating airport development options four runway expansion
alternatives at the existing airport site were examined in the Airport Site Evaluation Study
1996 The following general conclusions about expansion at the existing site were made: A
runway beyond 5,000 feet in length would be prohibitive; Substantial land acquisition costs
would occur, Substantial housing and structure relocation costs would occur, The immediate
area is rapidly developing in new residences; and A full instrument land system with a
MALSR approach li ting system would be difficult to develop.
Developing a new wort at an alternate site (the proposed Halifax-Northampton Regional
Airport) includes the following benefits: An opportunity to develop a runway with full
corporate airport length potential; Space for full tertiary development/aprons hangars etc.;
An instrument approach system without neighborhood conflicts; Reduction of noise impacts
to developed areas; Reduced project complexity' Minimal land parcel acquisitions, Minimal
housing relocations; and Improved highway access.
As a final note a new full size corporate aircraft airport has a potential to better support
county industrial development activities General proximity to planned and on-going
industrial activity as well as proximity to the best hi wayprovisions (i.e.; Interstate 95) is
the preferred situation.
Page 7 of 14
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
No prior permits have been requested.
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
The next project at this site will include paving the runway, a connector taxiway, and a small
portion of the apron Future projects will include further paving to the ultimate paving limits
shown and construction of aircraft hangars and a terminal building. Future projects will not
include any further grading or land disturbance. All future pavement was accounted for in
calculations for runoff and detention.
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
1. Provide a written description of the proposed impacts: Fill impacts to wetlands will result
from the construction of a runway, taxiway, aprons, and a terminal facility.
Page 8 of 14
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
es/no Distance to
Nearest Stream
linear feet
Type of Wetland***
1 Ditch**** 0.01 No 0 Freshwater marsh
2 Fill 0.01 No 0 Freshwater marsh
3 Ditch**** 0.20 No 0 Freshwater marsh/forest
4 Fill 0.04 No 0 Freshwater marsh
5 Fill 0.05 No 0 Freshwater marsh
6 Fill 0.01 No 0 Freshwater marsh
7 Fill 0.04 No 0 Freshwater marsh
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized cleanng, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at hM://www.fema_gov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
**** Ditches constructed through the edges of wetlands are not intended to drain the remaining
portion of those wetlands. To prevent further impacts to wetlands where ditches will be
constructed, the soil adjacent to the new ditch would be compacted and a low berm installed
adjacent to the ditch to prevent the wetlands from being drained.
List the total acreage (estimated) of all existing wetlands on the property: approx. 60 acres
Total area of wetland impact proposed: 0.36 acres
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
(indicate on ma
Type of Impact* Length of
Impact
linear feet
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
leasespecify)
A Relocation 280 N/A 3 feet Perennial
B Relocation 199 N/A 3 feet Intermittent***
C Fill 1,430 N/A 4 feet intermittent"*
D Fill 13 N/A 3 feet Intermittent***
* List each impact separately and identify temporary impacts. Impacts include, but are not hunted to: culverts and associated np-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mapquest.com etc.).
*** The Corps and DWQ have determined that all intermittent streams to be impacted by the
project by do not provide Important Biological Functions due to channelization and a lack of a
vegetative buffer. Therefore, no mitigation is required for these impacts.
Page 9 of 14
Cumulative impacts (linear distance in feet) to all streams on site: 1922
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
(acres) Nam
(if e applicable) Waterbody Type of Waterbody
(lake, pond, estuary, sound,
bay, ocean, etc.

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: tut, excavanon, dredging,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Ponds will be created with an earthen
dam/embankment Each will contain a concrete riser structure and an emergency spillway.
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Proposed ponds will be used to filter sediment from on-
site runoff. Runoff areas are predominantly grassed but will contain future paved areas.
Size of watershed draining to pond 1: 66.04 acres Expected pond surface area: 9.3 acres
Size of watershed draining to pond 2: 30.27 acres Expected pond surface area: 2.3 acres
Size of watershed draining to pond 3: 30.97 acres Expected pond surface area: 2.7 acres
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
In order to minimize impacts to wetlands and streams Sediment Basin No. 1 was moved closer to
the future taxiway and runway. In doing this the Basin was moved completely out of the stream
and is currently only iWacting Zone 2 of the Tar-Pamlico Buffer. Sediment Basin No. 2 was
Page 10 of 14
also moved to avoid disturbance of a perennial stream and Sediment Basin No. 3 was adjusted to
avoid nearby wetlands As well as moving the sediment basins, side slopes on ditches and ties to
existing ground were steepened from 4:1 to 3:1 slopes in order to minimize the disturbed area
and avoid adjacent wetlands
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin; type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
To compensate for impacts to a-previously channelized perennial stream a 7.25-acre buffer
area will be planted with native hardwood tree species along a 1485 linear foot section of
perennial stream located south of SR 1619 (see Sheet 15 of 15). Currently this proposed
buffer area consists of agricultural fields. Onsite wetland mitigation will consist of wetland
restoration which will involve replanting a 1.5-acre wetland with native hardwood tree
species The proposed wetland restoration site was formerly part of an agricultural field and
is currently dominated by herbaceous wetland species. Trees planted in both restoration sites
will be planted on ten-foot centers for a total of 436 trees per acre. The stream restoration
Page 11 of 14
site is located in the Tar-Pamlico River basin Both restoration sites will be planted by hand
to avoid disturbance to the soil and upon completion both will protected through the
establishment of conservation easements.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htrn. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ? No
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ® No ?
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ® No ?
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Page 12 of 14
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify Tar-Pamlico )?
Yes ® No ? If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the .riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet Multiplier Required
Mitigation
1 70,137 3 210,411
2 70,285 1.5 105,427
Total 140,422 315,838
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or.0260.
A 7.25-acre buffer area will be planted with native hardwood tree species along a 1485 linear
foot section of perennial stream located south of SR 1619 (see Sheet 15 of 15). Currently this
proposed buffer area consists of agricultural fields A conservation easement will be established
to protect the restored buffer area
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
For this project there will be approximately 4,800 s y of asphalt pavement removal and
qpproximatel 485 s .y. of gravel pavement added. Three sediment basins and two rock dams are
being constructed to detain on-site runoff and remove sediment.
XII. Sewage Disposal (required by DWQ)
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
Page 13 of 14
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 211.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 14 of 14
0,4 (,1 F,4 jAf
HALIFAX COUNTY AIRPORT
RONAKE RAPIDS, NORTH CAROLINA
NEW AIRPORT SITE
STATE AID TO AIRPORTS PROGRAM
Administrative Action
Finding Of No Significant Impact
North Carolina Department of Transportattion.
Division of Aviation
Submitted Pursuant to the Provisionsoi
The National Environmental Policy Act .
and
Requirements of the State Aid to Airports) PYQgrarn:
Approve
Richard W. Barkes Airport Development Engineer '. _ .'Date

TABLE OF CONTENTS
Section Pace Nbmber
1. Project Purpose: 1 = 3
Generic Airport Layout Drawing 2
11. Alternatives 3
1V.
V.
Environmental Impact Categories 4 _.g
Noise 4
Compatible Land Use ::5
Social Impacts 5
Induced Socioeconomic Impacts 5
Air Quality 6
Water Quality g
Department of Transportation Act Section 4(f) .: 6
Historical, Architectural, Archeological, and Cultural Resources . , :6
Biotic Communities 7.
Endangered and Threatened Species of Fauna and Flora 7
Wetlands 7
Flood plains 7
Coastal Zone Management and Coastal Barriers
Wild and Scenic Rivers g ..
Prime or Unique Farmland 8
Energy Supply and Natural Resources g
Light Emissions g .
Solid Waste Impacts g..
Construction Impacts
Woodlands g• ::
Environmental Consequences - Other Consideraikma: S ..
Recommendations
Appendix: Review Agency Correspondence
City of Roanoke Rapids Halifax County Airport
New Halifax County Airport
Environmental Summary
Preliminary Notes:
This environmental document is to be reviewed under the guidelines setforth
under the National Environmental Policy Act (NEPA). The. proposed ;
development of this airport will require that the state and local goverrimental.
units participate in the funding of this project and the development h-as been
proposed for federal funding under the State Block Grant Pilot-PrograM.
1. Purpose:
Under the provision of the National Environmental Policy Act (NEPA} and. the
North Carolina Environmental Policy Act (NCEPA) no funds. may be dispeFSed
until the funding agency has reviewed the potential environmental- impacts of the
proposed projects and has concluded that the impacts, if any., are.:acceptable: In
the scoping of these projects Halifax County was required to develop an...
Environmental Assessment (EA) meeting the provisions of both the-fd4rsf and.
state environmental regulations. After the EA was circulated and reviewed-as a.
draft and again as a final EA by both state and federal agencies; the comments,
and concerns were addressed and it has been determined that-'the
environmental impacts are minimal. As a result of-this documentation.,. a.,Findlhg
Of No Significant Impact (FONSI) is appropriate and acceptabie-in this.matter;'
The City of Roanoke Rapids and Halifax County, are the sponsors of fhe ;
proposed project discussed in the two previously reviewed LEAs' acrd' in this
FONSI. The purpose of the EA was to study the potent1a1-.effecis of a: ..his
general aviation airport in Halifax County.
The selected alternative incorporates the land acquisition to dotrstPuct.the h6
runway and related safety areas of a 5,500' by 100' ruh%opy including a. parallel....;..
taxiway, approach lighting, terminal area apron and clear ing..tomeetthe.
requirements of the Part 77 Airspace Regulations. All vfile:pioposed.
construction is shown in the typical drawing on page 2. -
The existing Halifax County Airport is currently a 5-23 alignment;tighted runways .:
4,000 feet tong and 75 feet wide. The airport currently, has;23based.aircraff:and.: .
approximately 13,000 annual takeoffs and landings. The existhig.runway is'
deemed inadequate in length to handle existing .demand 'and cannot
accommodate larger business aircraft including some corporate jets: This.
project would result in the development of a 5,500' by 100' runway..rneetirlg: all
applicable FAA design standards and capable of meeting the Community's. 20
year aviation needs.
3
The need for the improvements is based on current requirements not being
adequately met at the existing facility and the anticipated growth based on
operations shown in the previously circulated EAs. The proposed.hMt6vements
looked at expansion alternatives at the existing airport site and development of a
new airport to accommodate the corporate aircraft at minimal performance and
safety restrictions and therefore further enhance the.potenfrai devetop6ent iri 'the
Halifax County area.
11. Alternatives:
The County considered sixteen alternatives while developing the EA that
included four alternatives at the current airport. In addifion.to the four orr site
alternatives, twelve alternatives that relocated the airport to a new site,' and a."do.
nothing" alternative were also considered.
The sixteen alternatives were developed and as a result of-the: inforrttation.... .
detailed in the EA eleven alternatives were eliminated and five. we' re retair*Vor
further detailed environmental analysis. The five remaining alte'rnatives`.
consisted of two alternatives at the existing airport and three new sites called
A,B,G,1-2, and L-2 in the EA. The five alternatives were-discussed. ih great. detail,
in the previously circulated EA and will be briefly referred; to here.
The "Do Nothing" alternative was rejected. Although this: proposal has the least
amount of environmental impacts it does not meet the c rrrent or projected.needs
of the airport from a potential development perspective.
Alternative A is an expansion of the existing airport aligned a the.existing
runway with the ramp/terminal area being developed along the southeast side.:
Alternative B is an expansion on the existing airport approximately 506 feet west
of the existing runway with the terminal area to the southeast.: Alteroative-.G. is.
located east of 1-95 and north of NC highway 903 and consists 'of a 5,500'
runway in a northwestisoutheast orientation.- Altemative t-2. is east`:of State.
Road (SR) 1618 and crosses SR 1619 and consists of.a `5;5,Wruhway.ir4 4-
northwest/southeast orientation. The final altemative L-9 is .is tlie sarna:efea as :
1-2 but in a north/south runway orientation. All of the attethkWes: are.shown -in
figure 1-4 of the previously circulated EA.
The preferred alternative is site L-2, all five of the altemattves were diBCttss din. .
detail in the EA and the specific environmental impact catego ies'will be.-O-Ofly"
discuss for the preferred alternative in the following section:
Ill. Environmental Impact Categories Summary:
Noise:
The Airport Environmental Handbook (FAA Order 5050.4A) states that-if
threshold levels of 90,000 annual adjusted propeller ;operations:or 700
annual adjusted jet operations are not exceeded then no farther noise
analysis is necessary. The forecasted operations for this airport:do not
exceed these threshold limits.
The effect of aircraft noise on residents is a complex matter to .ctuantify. In
the past twenty years, since aircraft noise began causing impac€s.on .
communities, many different methods and efforts have beeKmade to
determine the effects of noise, and to develop ways of describing
exposure and potential impacts. Environmental regulations and'..--
guidelines tend to use cumulative measurements- to.-assess airport noises.!-
This form of measurement concept is based on the effect.of noise on.
people is logarithmic, and further assumes that nighttime noise ace. more : .
intrusive than daytime noises. This cumulative. noise analysis•'assigns.,.
nighttime noise events greater weighting than daytime events. This:
methodology of Day - Night average sound level or Ldn was specif1paRy.
developed for considering environmental noise sources.. This method of
measurement also provides a means for determining how .n iucft noise an=
airport produces over and above background noises.
A noise impact occurs when human activity is exposed.:ta noise tenets: in
excess of those appropriate for that activity. To guide th@ irripact:
identification procedure the Department of Transpior'tatidn:Noise ,'
Abatement Policy states that "In assessing comtmnity reaction to aircraft :.
noise, the following interpretation of Ldn value is -used.
Less than 65 Ldn - essentially no complaint&expected noise -may .
interfere with community activity.
65 to 75 Ldn - Individuals may complain; group action possible;
Greater than 75 Ldn - Repeated vigorous. cornplaipts..expected,
group action probable
The noise analysis performed for the proposed Halifax County Airport arrd
presented in the EA indicates that there are no existing or planned'rtoise
sensitive areas within the current or projected 65 Ldn area that .WIU riot be :.
acquired as apart of this airport project for any of the alternatives.
Therefore no further analysis is necessary and it may be assumed..that .
there will be no significant noise impacts.
Compatible Land Use:
The primary concern with compatible land uses in airport devefopM. ent is
associated basically with noise. As discussed previously there. are no
anticipated noise related impacts and therefore noise oriented. land. use
issues. have been addressed. The existing land uses at the: alternative:
sites were discussed in the EA and will not be.repeated. here other than
the preferred alternative L-2. L-2 is located in a rural area agd..the-nearest
homes are approximately one mile from the proposed runway s& The'
county plans to enact a airport height zoning ordinance upon approval. of
the FONS1, the Division of Aviation will also encourage the zoning to
include land use issues surrounding the proposed site. It cart be
concluded that there are no significant compatible land-use iiTipaEts.
Social Impacts:
The primary social impact to consider is the relocation of residences. On
the basis. of the information presented in. the EA and at-the. pubtio',hearing
for this proposed project, adequate housing is availablein'the Area-.'
Halifax County will be required to meet the provisions of the- Unifotrn
Relocation Assistance and Real Property Acquisition Polices AA-of 497D
if any relocations are required.
The preferred alternative L-2 does not appear to require the. relocation of
any residences. SR 1519 in alternative L-2 will. need to be closed, there is!
a paved alternate road that can be used. The project does. not involve the ; .
relocation of any residences or businesses, divide or disrupt established'
communities, disrupt orderly or planned developniphtL or create any .
negative appreciable change in employment Therefore.no.signi.ficant
impacts are anticipated.
Induced Socioeconomic Impacts:
This category is primarily concerned with induced-pr secondary impacts".
on the surrounding communities. Induced impacts :are usually not....,
considered significant unless there are significaht..Ja pacts Jn other.:.:
categories especially noise, land use or direct social impacts. As stated,in
the EA the preferred alternative site of L-2 does not have any water/sewer .
expansion anticipated at this time therefore it would be unl'ik*1hatthere
would be any significant degree of induced development. * Based on the.
previous discussions there are not any anticipated impacts that will
require further analysis in this area.
6
Air Quality:
The forecasted operations at the airport do not exceed the thresholds for
an air quality analysis as defined in the "Airport Environmental Handbook"
or the North Carolina Standard 2D.0804. Since no further analysis is
needed it can be determined that there is not any significant impact. Any
-open burning that occurs during construction will adhere to alt federaf,
state, and local regulations
Water Quality:
For the preferred alternative L-2 the projected construction is'unlikeiy.to,
have a significant impact on water resources and water qua*'near the:.:
airport. Wetlands issues will be discussed in the:wetlands section-.
Mitigation of potential impacts will be addressed by utilizing. best
management practices. All permits will be acquired piiouto construction. .
Consultation made with the Army Corps. Of Engineers -and the State .
Division of Environmental Management concur that the impacts•:ta the sit*
will be minimal and not significant (see correspondence. iii. the.appendix}.
The tree clearing for the proposed L-2 airport in the Quankey Creek. area.
will be kept to a minimum that still meets all FAA safety approach...
standards. An extensive discussion of this topic was presented: in the.
previously circulated EA and if can be concluded' ithatthd potential*
impacts on water quality are minimal and no furtheer discbssion is
necessary.
Department of Transportation Act Section 4(f):
There are no parks, historical sites, recreation areas.,. wildtrfe,or'Waterfowi.
refuge of national, state, or local significance within.the, project acea:that
are expected to be directly, or indirectly impactedby this :pfoject.
Therefore the Section 4(f} requirements of the Depadmerit of
Transportation Act are not applicable for this project:
Historic, Architectural, Archeological and. Cultir:rg.U Resaiurcesi
The L-2 alternative had an archeological survey-conducted and the:North
Carolina Department of Cultural Resources stated` that no:fcrther"
archaeological investigations were needed. The D vi?sion:ofArchives.ahd -
History stated that the L-2 site has two historical properties nearay that
will be effected, but the effect will not be adverse if..tli'e f1'i - ht.patterr<s are
restricted to the west. As stated in the EA the traffic pattteirnslor'tl is
airport will be conducted from the west. The Department.of Guttural.:..
Resources concurs that Section 106 of the National Historic Presei!vation.
Act has been satisfied and therefore no further analysis or-action is
necessary.

Biotic Communities:
As detailed in the EA a biological assessment was performed .for eac.h... .
alternative. The specific biotic communities will also be discussed in. other
sections of this FONSi under wetlands, endangered species, and
woodland impacts.- Based on the discussion of these related. impact
categories, in combination with best management practices :and good
construction techniques, the biotic impacts will be kept td the minimum
extent practicable and will not be significant in nature at-the ti-2. site.
Endangered and Threatened Species of Fauna and Flora:"
A detailed biological assessment was performed -on the proposed.project
area. As a result of that assessment, no significant impacts 'ar6?expected
on federal or state protected species of fauna or flora. The previous
circulated EA contained the detailed results of the asses nt.
Minimization and avoidance will be used to reduce-or mitigate any
potential impacts.
Wetlands:
As discussed in other sections a great deal of biological -work was
performed on the site. As a result of that work, wetland impacts :have
been minimized and avoided to extent practicable.- During the.
development of design plans for the proposed constructiori all efforts will..
be made to reduce impacts to wetlands areas -and 0 applicable, permits
will be applied for prior to any construction activity.. Based on the- site visit ;
conducted by Natural Resources Conversation:Service tie sitsFa.." ppears.
be eligible for a Section 404 Nationwide 26 Permii.arid..a.401.::1Nater..
Quality Certification. There are not any anticipated. problen, rriri tr
obtaining these permits, and based on the information contain.ecHn'the'EA
there will not be any significant impacts to wetlands #oc tbis.prpposed. ;..
construction and thus no further discussion will be necessary- for this:
determination. (See appendix section for docunt0itation.from bt-NR
DEM, and Army COE)
Flood Plains:
The L-2 site does not have any federally mapped:tiood ptaih*'0' n ".site, ..
with proper design consideration all drainage features -.carybe adequately"
addressed. There should not be any significant.irnpaet on: flood ptairis - .
with this project.
8
Coastal Zone Management and Coastal Barriers:
These sites are not located within a coastal region and therefore there
would be no impacts in either of these categories.
Wild and Scenic Rivers:
There are not any classified wild and scenic rivers within, the.projed. sites
and thus no impact on this subject.
Prime or Unique Farmland:
Farmland can be classified as either prime, unique, statewide and locally
important, or urban land. The US Department of Agrlculturat,.Far'miand
Conversion Rating Form AD-1006 was used to determine the impi acts.td
local farmland. The form rated the area of impact at less than M critical
point of concern of 160. Therefore it can be concluded that.thefe. are not
any significant impacts on this topic.
Energy Supply and Natural Resources:
Based on definitions given in FAA Order 5050.4A; the. proposed action will
not have significant demands on energy supply or natural resources.
Other than the additional lighting requirements, there will°not be:any
impact to energy supply of the area. it can thus be concluded that there
will not be any significant impact and no furth& action is: necessary.:
Light Emissions:
The types of lighting being installed, location, and method of use'.for the.
lighting should not have any significant impact on; Fesidences h the vicinity:
of the airport. The rotating beacon and some of the!:runvuay lighting
systems are the only lights that will be visible by the. residences irkthe..
area, if an annoyance lighting problem should develop the rneasures'can ..
be taken to reduce or eliminate the problem. There,sho.uld:not.be a'
significant impact on this subject.
Solid Waste impacts:
There are not any solid waste impacts known or anticiOated due io the
construction or operation of this project. In addition.the' re':are. not. any .:. . .
known impacts to existing or proposed solid waste facllities in the area.
Construction Impacts:
The types of impacts to be considered primarily are related :to noise, air;.
water and flora and fauna impacts. There are not any anticipated noise
impacts that are not expected to unduly impact local residences or
businesses and the other impacts have been discussed in other aeeas of
this document. In general all applicable permits, (such as sediment and*
erosion control plans, and burning permits) and good: construction .
techniques (like those outlined in FAA Order 150/5374 -.10"'Standards for
Specifying Construction of Airports) should alleviate any potenti!ai"irfmpacts
in this subject.
Woodlands:
Based on the information discussed in detail by the previously circulated:
EA the L-2 site, which is now the preferred alternative, reduces the-
potential woodland impacts for all the alternatives except for. those-that-
involve the existing airport. The L-2 alternative will make every:effo ,tQ
salvage, to the extent practicable, all merchantable-timber wiihih the.area.
of impact prior to construction. It is standard practice with all. Division of
Aviation projects, to salvage to the extent practicable, prior: to.eo'nstruct'ion
all merchantable timber. This policy helps the Division recovet.sorne cost
associated with any of our construction projects. .1n.-addition .every?.e?ffort
will be made during the construction process to protect the rerhainrhg ,
woodlands. The Diviz6iui ur Aviation will work with the- DENK',uivision.ot .:
Forest Services to identify and try to resolve artiy "airspace icripa-0
concerns" they may have regarding the L-2 site. All necessary permits will
be obtained and followed during the construction process.
IV. Environmental Consequences - Other Consideratiorna:
The EA has addressed all the anticipated specific environmental,. impacts: for this:
project in both the construction phase and ultimate ?ttilzatioiti of the project::
There were not any controversial issues raised during. Fte;F?-deVelopment.e, '
project planning and subsequent design will take into aciount aiUanticipated
environmental impacts and make great efforts to avoid:.and.niinirnize them.: The
proposed actions appear to be consistent with ail federal, state, and local
requirements for the surrounding area.
In conclusion, the EA has shown that the proposed project can .be.eompiete.d
with no significant impact on the environment. All necessary pertr-ts are. %
expected to be obtained without incident and any additional measUires ttiat may
be necessary will be completed prior to, or when applicable in:the constcuc669 :'
process.

10
V. Recommendations:
After careful review of the Environmental Assessment and, comments.- and
response from the coordination process, the undersigned has found. that the
proposed project is consistent with the objectives of the national and state
environmental policies. The objectives and polices are set forth in:thd--National.
Environmental Policy Act and the North Carolina Environmental Policy Act, and
the project will not significantly affect the quality of human environ.irierit-or
otherwise include any significant condition requiring further. consultatioh with'any
federal, state, or local review agencies with the following exceptions which shall
be made a condition of the environmental approval of this project:.
1. Halifax County, or its appointed representative shall obtain any .and ail:
federal, state, or local permits (such as burning, sediment and erosion.control,
NPDES general construction permit, 401 WQC, 404 Nationwide 26;:etc.,)-prlor to
construction of this project.
2. Any mitigation that might prove necessary shall 46 developed grid .
implemented prior to, or during the construction phase of. this project..
Therefore it is the undersigned's recommendation that the, project be given. a.. .
Finding Of No Significant Impact (FONSI) under the provisions s° f-forth.by: the .
State of North Carolina Block Grant Pilot Program, and the Nat'ronah..
Environmental Policy Act.

Richard W. Barkes Date
Airport Development Engineer
Division of Aviation, North Carolina Department-of Transp ai tior!
. curl wu L,w?Lt r?.• •7i7-, :r:-7'7?'?
State of North Carolina
Depaftmer't of Environment
ar~d:'Natural Resources
Div'Sion: of Walar Ouality
Jantgs 8. Mt?nt; ;ir.; GOVeMOr
Wayiee tNlCbevitt; Secretary
A:. Prettort. Howar - &., P.E., Director
JUL j :?6 Ju:4V r.02/ 0-

July 8. 1998
:. . Iv1rc. Tait elai?eoey
3ba LPA GROUP of Note CaoUM p.a.
4904 fo w*cmm suite 201
`Peet (Mae 13ox 37736 '
R 06 Tom. Caroler; 27619
Subfex?. :.. ?°iddenQym:oPrcUmia'ryEnvroaa?ear? Assessment
:.. Airport; DE1V'RO 98-0122, DWQ #11732 FvrHaiifax county
R poe is made to ?u matw1i YM ptflViCod to me ft the Halifax Connty
' .A#tix : MY ' oi,'ti:e P[ditofnaty EA were forwarded to the Start; a
'' ?? :1997. Beth rid Mr: 601dop M eas3nghaetise on
Y have made
• ? ? : sac twxbMA
oonoeznt ?4' tti fS6vetioe Of t11t; Final FA 8 ase4 V= efforts to addms
reAPOn? uber 23p 1991, 0coobex.23, ==U Zed in Y: PA
`' 3*
Nt ve irZ. ii.t 19,97 add June 19, 199s. DWQ eadoeres
,?, ... ; .
np. 1AWthatt Ibis altetaa tfve wM impact up to 0.9 says Of xrctleoda and
P ?I scrraal tmpa=, which is the least dun" 90MUEC of C the shea
Hader r4ntidetatloh. .
i3
m s w boa the Mj= dexdpdou Pt'ovided in the Pftliminary EA add fonow u
, mataia??NOWded byLPA, a Geamal 401 Warex alit A
appiftime' to this PC'ofect. F7naI Pt -otizalion will y Ce ficaHon maq be
znd ovdt
ft0M require fcxmal application by NCDOT
DWQ Measa be awz* tbat hits a VVX +-!U be conting= upon
of IiWd no Ud-miniWzatioa of wetland and stream impacts to the extent
provision oi' wettaiad'aorl stream miEigattoa whale necessary. FIB.
DwQ gayer. the ongoing eff= by Bafax C
!Wax ow uo address our ootu er ic.
co' quji ?a. I*Win" tbae iNW-Ce of it 401 Wane
sa Qeialuy ctxtlflcatian requires
dad-br-i ,vaoct qu at - coacrrn:, to ensure that waler quallly Mwdsrds are met and no
CtSam° Beusl! es are lost Questions srgardlU#.the 401 Cetttfcatioa PI-211- &-,4d be
?? . Oman at CvnN De11®h cersr ?r nr. ?;? S clcnCa Or [phone] in DWQ-s water
Hranth.
Cyba Ben
Cc: Jalui Dorsey, DWQ, Raleigh
Jean A twele. COE, Raleigb
Danny Smirk DWQ Raleigh
Box 206U.. Rdoigh. &,,,h Carouna 27626-0535 Telephone [phone] F
An E9" OpP?unky ;teianselvs Action AX gig-733.0910
PbYor Soy: r"lad/ 10% post-con#umei pap*,
r
1
,,; DEPARTMENT OF THE ARMY
WILMINGTON DISTRICT CORPS OF ENGINEERS
Po. sox 1 R
WILMINt370N, NO" CAAO
UNA 28402,}890
wF"crW-M ta June 18, 1998
Regulatory Branch
Action ID No. 199708199, Wetland Determination.
5yn
J'1;
_ J rss?
Mr. Charles B. Archer
County Manager
County of Halifax
Post Office Box 38
Halifax, North Carolina 27839
Dear Mr. Archer:
Reference is made to the "Halifax County..Airport "Prelinilhary
Environmental Assessment" dated July 31, 199'7:,- .And ssequent
letters dated August 29, 1997, October 14, 1997:;. January 2:8, 1998
and May It 1998, submitted on your behalf by 'your.-agehtr. Mr. Thomas Slakeney with The LPA Group of. North CatolirA-, P.A.,
for the Halifax County Airport, in Halifax'County,-:Nb-rth
Carolina. Reference is also made to the site in-spectio' n
conducted by your agent and Mrs. Jean S. Manuele 'of "my:`}zaleigh
Regulatory Field Office on August 19, 1997. Mr. •Go.rdon- Murphy of
The LPA Group of North Carolina was also present.
Based upon the information provided in the erivi-ronmdmtal
assessment, your proposed project includes the, consideration-of 5
practicable alternatives. Alternative A, which inc'ludes'' the.
development of a 5,000 foot runway along the existing:; runway,.,: a
new terminal, and an access road, would involve 1.3.5.: acres ':of
jurisdictional impacts. Alternative 9, which also co.ns:is.ts: of
improvements to the existing airport, would incl-ude ' 9, .'".*-cres; of
jurisdictional wetland impacts. Alternative ,.G, .l.gcat-ed....riorth' of
NC Highway 903 and east of SR 1600, involves 9.0 acres.;o£
jurisdictional, impacts and may also necessitate the..Glearir?:g: of
forested wetlands adjacent to Little Quankey Creek-to . meet FAA
approach clearing requirements. Alternatives I-2-and::L-2 are
located east of SR 1618, on the north and south sideg:,ot 5R.:1.619,
southeast of Roanoke Rapids. Alternative L-2 is notA.d as being
your preferred alternative since it may only impact S.Q acres'-of
jurisdictional waters and wetlands, while Alternative, 1"72 i''a.cts
18.5 acres.

Ci
Upon review of the correspondence submict.ed..man Ma.y Z, 1998,
our office learned that jurisdictional waters and;wetla.t, had
been delineated at the L-2 site by Mr. John Gagnon; a soil
scientist with the Natural Resources Conservatia?i ;*' _ .. . e. Based
upon his delineation, it appears that the i.mpacts---.A'
ssoci.ated with
the construction of your proposed airport at. the L-2 loci;tion may
impact no more than 0.9 acre of jurisdictional we't,lands,'..and
could possibly be authorized by Nationwide Permit OUmber .26.
Based upon the information now available,. L-2. ,:appe:ars ta. be the
least environmentally damaging alternative,.fcillowl.a* order by
Alternatives G, B, A and 1-2. It should be noted,. however., that
the estimated acreages of wetland impacts assccated::w}thall
alternatives other that L-2 are not based upon- field
delineations.
Please be reminded that clearing of forested:wdt1ands to
remain permanently as either herbaceous or scrub=shrub.' wetlands
within the clearing limits will be considered .'persna tent impacts
and may require Department of the Army authori-zaticn.''
Furthermore, we would like to rewind you ; that-' Nati-ohw*Ide -pfrmit
26 expires on December 13, 1998; accordingly, -authorizatioin for
this project will need to be obtained and the' proj.ect:.-commenced
prior- to that date in order for the project to be 41lowed'a I
year extension for completion.
Should you have any questions or comments,:-Mrs;:;Mahu.ele can
be reached at telephone [phone], Extension 24-.
Sincerely,
S. Kenneth Jolly
Manager, Raleigh RequYatory.
Field Office
Copy Furnished:
Mr. Thomas L. Blakeney
Senior Planner
The LPA Group of North Carolina, P.A.
Post Office Sox 17736
Raleigh, North Carolina 27619
2

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THE LPA GROUP of North Carolina, p.a.
Transportation Consultants
4904 Professional Court, Suite 201
Raleigh, North Carolina 27609
[phone]
FAX [phone]

April 20, 2004
Mr. Steve Mitchell
North Carolina Department of Environment and Natural Resources
Division of Water Quality
3800 Barrett Drive
Raleigh, North Carolina 27609 WETLANDS 1401 GROUP
Re: Halifax-Northampton Regional Airport APR 2 1 2004
Runway Site Preparation
Dear Steve:
WATER QUALITY SECTION
Enclosed please find seven copies of the Pre-Construction Notification Application Form
as well as all accompanying drawings for the above referenced project. This
Application is being submitted for a Section 404 Permit as well as Section 401 Water
Quality Certification and approval of Riparian Buffer impacts.
The Runway Site Preparation project includes grading of the future runway, parallel
taxiway, connector taxiways, and apron for the new Halifax-Northampton Regional
Airport. The project also includes. construction of three dry sediment basins to capture
on-site runoff of all future development.
Also enclosed, please find check number 69, in the amount of $475.00, to cover the fee
for plan review.
If you have any questions or need additional information, please do not hesitate to call.
Sincerely,
THE LPA GROUP of North Carolina, p.a.
Brigid Z. Williams, E.I.T.
Design Engineer
Enclosures
Member of THE LPA GROUP INCORPORATED
ATLANTA GA ¦ BATON ROUGE, LA - CHARLESTON, SC - CHARLOTTE, NC - CHICAGO, IL - COLUMBIA SC ¦ GREENSBORO, NC - KNOXVILLE, TN
MOBILE, AL - MYRTLE BEACH, SC - ORLANDO, FL - RALEIGH, NC - RICHMOND, VA - SARASOTA, FL - TALLAHASSEE, FL ¦ TAMPA, FL ¦ WEST PALM BEACH, FL

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THE
LPA
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tANSPORTATION CONSULTANTS
4904 Professional Court, Suite 201
Raleigh, North Carolina 27609
HALIFAX-NORTHAMPTON REGIONAL AIRPORT
Halifax County, North Carolina
DRAINAGE DITCH LAYOUT SKETCH

MAR. 2004
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Complete items 1, 2, and 3. Also complete
item 4 if Restricted Delivery is desired.
Print your name and address on the reverse
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or on the front if space permits.
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If YE$, enter delivery address below: ? No
LPA Group
4904 Professional Court, Suite 201
Raleigh, NC 27609
DWQ# 04-0639 - Halifax

Type
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for Merchandisi
4. Restrrted Delivery? (Extra Pee) ? Yes
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