19970708 Ver 2_More Info Received_20090121

L_. ~~~o~~~n~~S~~s INCORPORATED

700 HUGER STREET. PO. BOX 5805. COLUMBIA, SC 29250.803-254-2211 . FAX [phone]

January 19,2009

~~@~OW[g~

JAN 2 1 2009

Ms. Cyndi Karoly
North Carolina Division of Water Quality
401 Oversight/Express Review Permitting Unit
2321 Crabtree Boulevard, Suite 250
Raleigh, NC 27604

Dl;NR . WAfER QUALITY
WETLANDS AND STORMWAlER BRANCH

Re: Coastal Carolina Regional Airport (DWQ Project # 97-0708, Ver. 2) Request
for More Information.

Ms. Karoly,

On behalf of the Coastal Carolina Regional Airport, THE LP A GROUP
INCORPORATED submitted materials required for the Section 401 Water Quality
Certification on December 12, 2008. A Request for More Information was received from
the North Carolina Division of Water Quality on December 23,2008. This submittal
serves as a response to the Request for More Information, dated December 22,2008.

Please find enclosed five (5) copies of the revised Project Narrative, five (5) copies of the
Soil Survey Map, five (5) copies of the Site Plan with riparian buffer limits/impacts, and
five (5) copies of the Site Plan with wetland limits/impacts.

Please contact me at 843-329-0050 or at [e-mail] if you have any questions
or require additional information.

Sincerely,
THELPAGR09I~NO~ORA D
~. . J
L~.
Edward J. Smail
Environmental Scientist

Enclosure

Cc: Mr. Tom Braaten, Coastal Carolina Regional Airport (w/o enclosure)
Mr. Terry Bumpus, P.E., THE LPA GROUP (w/o enclosure)
Mr. Gordon Murphy, THE LP A GROUP (w/o enclosure)
Project File

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ATLANTA. BATON ROUGE. CHARLESTON. CHARLOTTE. COLUMBIA. GREENSBORO. GULFPORT . JACKSONVILLE
KNOXVILLE . LITTLE ROCK . MOBILE . ORLANDO . RALEIGH . SARASOTA . TALLAHASSEE . TAMPA . WEST PALM BEACH

PROJECT NARRATIVE
Coastal Carolina Regional Airport
Runway 22 Safety Area Extension
Revised January 2009

The Coastal Carolina Regional Airport (formally the Craven Regional Airport) is located
in Craven County, North Carolina, south of the City of New Bern, situated just west of
US 70, on a peninsula at the confluence of the Trent and Neuse Rivers. The location of
the proposed project is shown on Sheet 1 of the attached permit drawings.

Block 18
In order to improve runway safety and comply with Federal Aviation Administration
(F AA) safety regulations, the Coastal Carolina Regional Airport is proposing to extend
the Runway Safety Area (RSA) for Runway 22. RSA requirements are defined in FAA
Order 5200.8, Runway Safety Area Program, and the "Airport Design" Advisory Circular
(AC) 150/5300-13 (Standards for SpecifYing Construction of Airports), and other
applicable FAA guidance. F or an airport the size of Coastal Carolina Regional (a C- II
Airport) the FAA requires a 1,000-foot long RSA from the end of the runway.

Blocks 19-20
The purpose of this project is to improve the safety of the Coastal Carolina Regional
Airport by extending the Runway 4-22 RSA to meet current FAA design and safety
standards.

A RSA is a surface surrounding the runway that has been prepared for reducing the risk
of damage to airplanes (or injuries to personnel/passengers) in the event of an undershoot,
overshoot, or excursion from the runway. The FAA currently requires an RSA extending
250 feet on either side of the runway centerline and 1,000 feet beyond each runway end
for an Airport Reference Code (ARC) C-II Facility, such as the Coastal Carolina
Regional Airport.

Currently, the Runway 22 RSA is in non-compliance for RSA length. The
implementation of this project will address this issue and bring the Airport close to FAA
compliance. Due to the location of Williams Road (as shown on Sheet 2), obtaining the
fu1l1,000-foot RSA length is not feasible.

The existing Runway 22 RSA is 500 feet wide by 600 feet long. The RSA extension
would be accomplished by constructing an additional 290 feet of RSA north of Runway
22. The final RSA length for Runway 22 would be 890 feet measured along the
centerline of Runway 22.

It was determined in an Environmental Assessment (EA)/Finding of No Significant
Impact (FONSI) (approved by the FAA on January 23, 2007) that extending the RSA
north of Runway 22 is the Preferred Alternative, due to impacts to Brices Creek
associated with shifting the runway to the south. A copy of an Alternative Analysis and
the FONSI are attached.

1
1/19/09

Block 22
Impacts to jurisdictional areas were determined by overlaying the construction limits on
the limits of the approved jurisdictional determination. The construction of the project
would permanently impact approximately 0.81-acre of jurisdictional wetlands. This
includes 0.58-acre of fill impact and 0.23-acre of impact due to clearing and grubbing.
These impacts are detailed on Sheet 2 of the attached permit drawings.

Avoidance
Due to the linear nature of the project, total avoidance of impacts to water
resources is not possible. There are no other feasible directions, or locations to
construct the safety area. The alternative selection process is detailed in the
attached Alternative Analysis. The selection of Alternative 1 as the Preferred
Alternative avoided approximately 300 linear feet of stream impacts associated
with the relocation of Scotts Creek that would occur with Alternatives 2 and 3 by
limiting construction to the south side of Scotts Creek.

Additional impacts to adjacent wetlands and streams would be avoided by
confining construction activities to the construction limits.

Minimization
Wetland impacts were minimized by limiting the extension of the RSA to the
south side of Scotts Creek. Alternatives 2 and 3 would have further impacted
wetlands by adding approximately O.4-acre of additional fill to wetlands north of
Scotts Creek. Alternative 3 would have also impacted additional wetlands
associated with the relocation of Williams Road.

Construction activities would be confined within the permitted construction
limits. Also during construction, potential temporary impacts to streams would be
minimized by implementing sediment and erosion control measures to include,
seeding and steepening of side slopes, hay bale placement, silt fences, and
sediment basins, as appropriate. Other BMPs would be required of the contractor
to ensure compliance with the polices of FAA Advisory Circular (AC) 150/5370-
lOA entitled Standards for Specifying Construction of Airports, and specifically
Item P-156 Temporary Air and Water Pollution, Soil Erosion, and Siltation
Control.

Mitie:ation
On-site wetland mitigation could be a wildlife attractant especially to wading
birds and waterfowl, which is in conflict with guidance provided in the Advisory
Circular (AC) 150/5200-33, Hazardous Wildlife Attractants On or Near Airports.
Per the recent requirements issued jointly by the USACE and the U.S.
Environmental Protection Agency (EP A) in the Department of Defense,
Department of the Army, Corps of Engineers 33 CFR Parts 325 and
332/Environmental Protection Agency 40 CFR Part 230 Compensatory
Mitigation for Losses of Aquatic Resources; Final Rule, dated April 10, 2008,
existing mitigation banks in the Neuse River Basin (HUC 03020204) were sought

2
1/19/09

for the purchase of mitigation credits. Three commercial mitigation banks are
located in the Neuse River Basin; however none have credits available at this
time. Additionally, in order to comply with Session Law 2008-152 and
USACE/EP A guidance, mitigation banks serving HUC 03020204 were contacted
to determine if credits were available before the request to use the NCEEP In-lieu
Fee Program was made. No credits were available within HUC 03020204 at the
time of the request.

Therefore, THE LP A GROUP INCORPORATED is proposing the use of the
North Carolina Ecosystem Enhancement Program (NCEEP) In-lieu Fee Program
to compensate for unavoidable impacts to waters of the U.S. A request was
submitted to the NCEEP on October 13,2008, and approved on October 23,2008.
A copy of the NCEEP acceptance letter is attached.

N euse RiDarian Buffer Rules
The proposed project is in HUC 03020204, which is in the Neuse River Basin and
is subject to the Neuse Buffer Rules as defined in 15A North Carolina
Administrative Code (NCAC) 02B .0233. Scotts Creek and an unnamed tributary
to Scotts Creek (UT -1) and their associated riparian buffers are within the
proposed project area. According to FAA AC 150/5300-13 Standards for
Specifying Construction of Airports, the RSA should be, "Free of objects, except
for objects that need to be located in the runway safety area because of their
function." Therefore, the vegetation within the RSA must be removed to comply
with FAA safety design standards. This includes vegetation within the riparian
buffer of Scotts Creek and UT-1. According to FAA AC/5300-13, "The
dimensional standards remain in effect regardless of the presence of natural or
man-made objects or surface conditions that might create a hazard to aircraft that
leave the runway surface." The RSA was not extended to its fullest extent in
order to minimize impacts to Scotts Creek, wetlands adjacent to Scotts Creek, and
Williams Road. However, while some of the clearing areas are beyond the
grading limits of the project they are still maintained as RSA to improve safety
and meet the obstruction requirements of FAA AC 150/5300-13.

Clearing would occur within Zones 1 and 2 of the riparian buffer of Scotts Creek.
Areas within 30 feet of Scotts Creek (Zone 1) would be cleared only and the
remaining 20 feet of the buffer area (Zone 2) would be cleared and grubbed.
Vegetation within Zone 1 (approximately 18,983 square feet) would be cleared
only (no grubbing) to minimize impacts to wetlands and the riparian buffer of
Scotts Creek. Vegetation within the 20 feet the makes up Zone 2 (approximately
7,786 square feet) would be cleared and grubbed. The clearing and grubbing
impacts on the south side of Scotts Creek would occur for the fill to construct the
RSA. Clearing and grubbing would occur within Zones 1 and 2 of UT -1. Impacts
to Zone 1 (11,747 square feet) would include areas of clearing and grubbing and
areas that would be cleared and grubbed for the fill to construct the RSA, which
would also occur in Zone 2 (6,297 square feet). The limits of clearing are shown
on of the attached permit drawings. Impacts are summarized in Table 1.

3
1/19/09

Table 1
Coastal Carolina Regional Airport
Runway 22 Safety Area Extension
Riparian Buffer ImDacts
Zone Type of Impact Square Feet
Zone 1 Clearing Only 18,983
Zone 1 Clearing and Grubbing/Fill 11,747
Zone 2 Clearing and Grubbing/Fill 14,083
Total Zone 1 30,730
Total Zone 2 14,083
TOTAL 44,813

The proposed project is deemed Allowable under the NCDWQ Memorandum,
Vegetation Management as it Pertains to Airport Facilities in the Neuse,
Catawba, and Tar-Pamlico Protected Riparian Buffer (May 9, 2006). This
memorandum addresses the removal of vegetation when it is necessary to comply
with FAA safety requirements. In order to comply with this memorandum, heavy
equipment would not be used in Zone 1 of Scotts Creek, vegetation would not be
compromised (the grubbed areas/fill slope for the RSA will be re-seeded), no
large trees will require removal by chain, permanent felling of large trees would
not be required in the buffer, the area contains scrub/shrub vegetation and the
project would not require the removal of large stumps, and at the completion of
the project the grubbed areas will be re-seeded with grass and the cleared areas
will be allowed to naturally re-vegetate with herbaceous vegetation. While
clearing and grubbing would occur within Zone 1 of UT-l (11,747 square feet)
and Zone 2 of Scotts Creek (7,786 square feet), these two areas are completely
within the approved wetlands boundaries. Therefore, the impacts associated with
the clearing and grubbing within Zone 1 of UT -1 and Zone 2 of Scotts Creek are
included in the total wetland impacts for the proposed project, and the area of
impact is included in the wetland mitigation required for the impact. The wetland
impacts associated with the clearing and grubbing/fill for the RSA within the
riparian buffers (0.59-acre) are included in the request to NCEEP to use the In-
lieu Fee Program. Since the wetland mitigation would cover all the riparian
buffer areas impacted by clearing and grubbing/fill and the clearing only areas
along Scotts Creek would be performed to comply with the NCDWQ
Memorandum, Vegetation Management as it Pertains to Airport Facilities in the
Neuse, Catawba, and Tar-Pamlico Protected Riparian Buffer (May 9, 2006),
riparian buffer mitigation is not anticipated to be required.

4
1/19/09

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lPA, -:!I
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TRANSPORTATION CONSl

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THE LPA GROUP of North Caro
5000 Falls of Neuse Road, Su
Raleigh, North Carolina 27

Member of THE LPA GROUP INCOI
CHARLESTON, SC . COLUMBIA,
CHARLOTTE, NC . GREENSBORO, NC . f
DA YTONA, FL . JACKSONVILLE, FL . 01
SARASOTA, FL . TALLAHASSEE, FL .
WEST PALM BEACH, FL . MOBILE, AL . U'
ATLANTA, GA . BATON ROUGE, LA . K~

Designer:

Technician:

CDH

Checked by:
TGB

Pro ject Number:

RA081 096

~g@guwm ~
JAN 2 1 2009
oENR' WA1'ERQU~ BAANCI'I
WEfLANOS AIIID STORMWIX

50 25 0 50
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GRAPHIC SCAlE BAR

REVISIONS

No. Description

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Project Name:

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RUNWAY 22 SAFETY
AND
RPZ IMPROVEMEI

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eRA VEN COUNl

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\ Autocad Drawing Reference:

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Date:
JANUARY 2009

Drawing Numt

Business Unit:
RALEIGH

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COASTAL CARe
REGIONAL AIRF

OImurn <!ountg

\
\ NEW BERN, NORTH CA

THEL.
LPA _ ~
GROUP . =.:=
--

TRANSPORTATION CONS'

THE LPA GROUP of North Care
5000 Falls of Neuse Road, SL
Raleigh, North Carolina 27

Member of THE LPA GROUP INCa
CHARLESTON, SC . COLUMBIA
CHARLOTTE, NC . GREENSBORO NC .'
DAYTONA, FL . JACKSONVILLE' FL . C
SARASOTA, FL . TALLAHASSEE FL .
WEST PALM BEACH, FL . MOBILE AL . LI
ATLANTA, GA . BATON ROUGE: LA . K

\ Checked by:
\ TGB
\ Project Number:

RA081 096

50 25 0 50
~ ~

GRAPHIC SCALE BAR

REVISIONS

FAA A,I.P, Project Number:

Project Name:

/

RUNWAY 22 SAFET~
AND
RPZIMPROVEME

Drawing Name:

GRADING, DRAINA(
EROSION CONT
PLAN
WI WETLAND A~

CRAVEN COUN

(
\
\ Autocod Drawing Reference:

CRV096_GD1.DWG

Date:
JANUARY 2009

Drawing NUl

Business Unit:
RALEIGH

(