20080601 Ver 2_401 Application_20080708

ATLANTIC ENVIRONMENTAL CONSULTANTS, LLC
P.O. Box 3266
Kitty Hawk, NC 27949
[phone] [phone] fax
[e-mail]
o$- 0100 I ?,
June 30, 2008 A
Ian McMillan
N.C. Division of Water Quality
401 Certification Unit
2321 Crabtree Blvd.
Suite 250
Raleigh, NC 27604
RE: Modification to 401 Water Quality Certification Approval (DWQ #08-0601) - Elizabeth
Citv Municipal Airport Elizabeth City, Pasquotank County, North Carolina
Dear Mr. McMillan,
This letter is a request for modification to the 401 Water Quality Certification issued to Elizabeth
City Municipal Airport c/o Rich Olson.
Enclosed are five copies of the revised plat and PCN Form, which includes a reduction in the
length of culvert permitted for 225 linear feet to 195 linear feet (decreasing the linear impacts 30
linear feet). The revisions also include additional rip rap placed upstream which will affect an
additional 32 linear feet of impacts.
A check for $570.00 is also enclosed for the application fee.
If you have any questions please do not hesitate to call our office 252-261-7707.
Sincerely,
Roxanne D. Dorman
Atlantic Environmental Cons` sul6 ts, LLC
cc: Josh Pelletier- USACE
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JUL 1 2008
DENR - WATER QUAUTY
TER BRANCH
WETLANDS AND ST(R
Form: Version March 05
USACE Action ID No. DWQ No. 0% - p tp O V 2.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A" ).
I. Processing E'4 PAID
k,W>
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 ? Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 14
3. If this notification is solely a courtesy copy because written approval for the 401 Certification is
not required, check here: ? N/A
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed for
mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here: ?
H. Applicant Information
Owner/Applicant Information
Name: City of Elizabeth City c/o Rich Olson
Mailing Address: P.O. Box 347
Elizabeth City, NC 27909
Telephone Number: see consultant info. Fax Number: see consultant info.
E-mail Address: see consultant info.
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: Douglas A Dorman
Company Affiliation: Atlantic Environmental Consultants LLC
Mailing Address: P.O. Box 3266
Kitty Hawk NC 27949
Telephone Number: 252-261-7707 Fax Number: 252-261-2965
E-mail Address: [e-mail]
Page I of 9
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 1 l 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: Elizabeth City Municipal Airport AEC#08-001
2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A
3. Property Identification Number (Tax PIN): Parcel#8932 429473 (60 acre tract
Parce1#8932 255146 (748 acre tract)
4. Location
County: Paquotank County Nearest Town: Elizabeth City
Subdivision name (include phase/lot number): U.S_ Coast Guard Air Base/Elizabeth City
Municipal Airport
Directions to site (include road numbers, landmarks, etc. Heading south on NC 34
(Weeksville Road) take a left on Consolidated Road (SR 1131), proposed crossing (taxiway)
is 0.61 miles down Consolidated Road adjacent to the ditch/stream and end of existing
runway on adjacent 748 acre tract (US Coast Guard Base/Elizabeth City Municipal Airport
5. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 36'15'18.16" °N 76°10'4.96" °W
6. Property size (acres): 748 acres and 63 acres = 811 acres
7. Name of nearest receiving body of water: _Pagquotank River
8. River Basin: Pasquotank River Basin
(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.ne.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 748 acre tract is developed with the U.S Coast Guard Air
Base and 63 acre tract currently comprised of farm fields The majority of the surrounding
parcels are developed single-family residential and agricultural land
Page 2 of 9
10. Describe the overall project in detail, including the type of equipment to be used: _ Project
includes: Placement of box culvert 6'(height) x 12'(width) 195 linear feet within an existing ditch
which is directly connected to the Pasquotank River and the placement of 32 linear feet of riprap at
the discharge point of a new culvert (see attached drawing). An excavator, crane and trucks will be
used to transport and excavate and place box culvert in existing ditch.
11. Explain the purpose of the proposed work: Proposed work is necessary to cross a USACE
jurisdictional ditch (Waters of the U.S.) to access highground to the adjacent property to
construct a taxiway for the Elizabeth City Municipal Airport.
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.
A Jurisdiction determination was made by USACE, Josh Pelletier in a meeting on site with
Sean Robey in 2007, however, No Action ID available at this time
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:
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. Each impact must be listed separately in the
tables below (e.g., culvert installation should be listed separately from riprap dissipater pads). Be sure to
indicate if an impact is temporary. All proposed impacts, permanent and temporary, must be listed, and
must be labeled and clearly identifiable on an accompanying site plan. All wetlands and waters, and all
streams (intermittent and perennial) should 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:Placement of a cement box culvert 6'
(h) x 12'(w) 195 linear feet within "Waters of the U.S " A taxiway will be constructed over the box
culvert once the culvert is in place to cross the existing ditch and extend the taxiway into the adjacent
63 acre parcel. In addition 32 linear feet of riprap will be placed upstream of the proposed box
culvert at the end of a new culvert (see drawing)
Page 3 of 9
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
separately list impacts due to both structure and flooding.
Wetland Impact
Site Number
(indicate on map)
Type of Impact Type of Wetland
(e.g., forested, marsh,
herbaceous, bog, etc.) Located within
100-year
Floodplain
(yes/no) Distance to
Nearest Stream
(linear feet) Area of
Impact
(acres)
N/A N/A N/A N/A N/A N/A

Total Wetland Impact (acres) = N/A
3. List the total acreage (estimated) of all existing wetlands on the property: N/A
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
walls, 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. To calculate acreage, multiply length X width, then divide by 43,560.
Stream Impact
Perennial Average of Impact Area of
Site Number Stream Name Type of Impact Intermittent t
? Stream Width Length Impact
(indicate on map) Before Impact (linear feet) (acres)

ditch connected to
] the Pasquotank culvert Perennial 12' 195' 0.063 ac.
River
ditch connected to
2 the Pasquotank Riprap Perenmial 13' 32' 0.01 ac.
River

Total Stream Impact (by length and acreage) = 227 linear feet (0.064 acre)
5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
fill, excavation, dredging, flooding, drainage, bulkheads, etc.
Page 4 of 9
Open Water Impact Name Waterbody Type of Waterbody Area of
Site Number (if applicable) e) Type of Impact (lake, pond, estuary, sound, bay, Impact
(indicate on map) ocean, etc.) (acres)

1 ditch connected to the
culvert tributary connected to Pasquotank
0.063 ac.
Paquotank River River
2 ditch connected to the
riprap tributary connected to Pasquotank
0.010 ac.
Paquotank River River

Total Open Water Impact (acres) = 0.063 ac_
6. List the cumulative impact to all Waters of the U. S. resulting from the project:
Stream Impact (acres): 0.064 ac.
Wetland Impact (acres): N/A
Open Water Impact (acres): N/A
Total Impact to Waters of the U.S. (acres) 0.064 ac_
Total Stream Impact (linear feet): 227'
7. Isolated Waters
Do any isolated waters exist on the property? ? Yes ® No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
Applies to waters that have specifically been determined to be isolated by the USACE.
N/A
8. 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.):
Proposed use or purpose of pond (e.g., livestock
local stormwater requirement, etc.): N/A
Current land use in the vicinity of the pond: N/A
Size of watershed draining to pond: N/A
watering, irrigation, aesthetic, trout pond,
Expected pond surface area: N/A
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.
Page 5 of 9
The proposed impact includes placing a box culvert in USACE jurisdiction "Waters of the U S "
to access highground (road crossing), on the adjacent highground for taxiway construction for
Elizabeth City Municipal Airport. StreamP'Waters of the U S " impacts were limited to a total of
0.063 acre, which is covered under a USACE Nationwide 14 General Permit Proposed
placement of culverts will allow the City of Elizabeth City to construct a taxiway crossing a ditch
to construct the taxiway on Elizabethy City property. addition 32 linear feet of riprap will be
placed upstream of the proposed box culvert at the end of a new culvert (see drawing) The existing
ditch runs the length of the property therefore no alternative for constructing the taxiway
available. Box culvert will allow passage of aquatic life AEC contacted NC DMF Sara
Winslow and she had no objections to the project A turbine is located downstream which places
restrictions from that point upstream le. Not navigable etc
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
htti)://h2o.enr.state.nc.us/ncwetlands/strmmide.html.
1. 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.
The proposed mitigation plan for this project will be the purchase of wetland credits from
NCEEP as compensatory mitigation to offset wetland impacts proposed waiting on approval
letter from NCEEP since 3-6-08 conversation with NCEEP on 3-27-08 states we will receive
Page 6 of 9
the approval letter on April 1, 2008, once received the approval letter will be faxed to the
DWQ office and USACE office).
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are willing to accept payment for the mitigation must be attached to this form- For
additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet): 227
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
Amount of Non-riparian wetland mitigation requested (acres): N/A
Amount of Coastal wetland mitigation requested (acres): N/A
IX. Environmental Documentation (DWQ Only)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ? No
2. 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
3. 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.
1. Will the project impact protected riparian buffers identified within 15A NCAC 213.0233
(Neuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify N/A )? Yes ? No
1 If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
Page 7 of 9
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multipliers.
Zone* Impact
(square feet) Multiplier Required
Mitigation
I N/A 3 N/A
2 N/A 1.5 N/A
Total N/A N/A
* 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, Riparian Buffer Restoration / Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or.0244, or.0260.
No buffer mitigation required for this project since disturbance/fill is not within the buffer.
XI. Stormwater (required by DWQ)
Describe impervious acreage (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. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. Total acreage of site is 811 acres Impervious areas
currently exist within the 748 acre tract with the U.S. Coast Guard Air Base and Elizabeth City Municipal
Airport. The 63 acre tract is currently cultivated farm fields with no existing impervious areas Proposed
built upon (impervious) areas for this project includes the area of the proposed culvert, taxiway and
taxiway apron roads Proposed construction at this time includes placement of a 6' (h x 12' (wide) 195
linear feet of box culvert and construct a taxiway to cross the existing manmade ditch (taxiway 75' wide
at ditch crossing) and continue taxiway construction on the 63 acre parcel with taxiway apron roads In
addition 32 linear feet of riprap will be placed upstream of the proposed box culvert at the end of a new
culvert (see drawing). Coverage on the 63 acre parcel will also include a combination of building and
parking lots however individual sites have not been designed at this time Limits will be included in
Storm Water Permit submitted by Hyman & Robey PC and restrictive covenants for the project
Coverage proposed for the Coast Guard Base is 62,500 s f (taxiway) Impervious Areas proposed at
this time for 63 acre parcel for taxiway and culvert is 57.5% covers?e• 325,852 s .E for taxiway and
taxiway aprons, and 1,270,000 s.f for buildings and parkin? lots (information obtained from
Hyman & Robey, PA). A cement box culvert will be placed within the existing manmade ditch to
remain contiguous culvert size: 6'x 12' x 195 linear feet, taxiway will be constructed once the culvert is
in place.
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.
On site wastewater systems proposed along southern portion of property.
Page 8 of 9
XUL Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (I 5A NCAC 2H.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).
No constraints currently associated with this project
Applicant/Agefis Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 9 of 9
d a
1 GEND: a I
PROPOSED GRADES <<
------- EXISTING TOP OF BANK i
EXISTING TOE OF SLOPE
I PROPOSED RUNWAY
b r
I PROPOSED RIPRAP 1
II aI
II IN 1 EXISTING RIPRAP I TA)WMY
II I a.4.
IM = 6.42 I t
r i
NV s -0.47 R
I ? 1
1
\\ \ NV N a 0.47
195 lf 6'x12'
\\ NV T . -0.67 I ?~5 CONCRETE BOX CULVERT
RIP" ,; INV. IN = -0.50
PROPOSED
\\ ` INV. OUT = -0.73
32
DOWNSTREAM
- - - I ? ?---? ?---- _--. -- -- - ? .--"? RIP-RAP - `-------------------------------
-. (6'X12') -- -- --
0--
--------------- - -- - - _ . _ . _ . _ . _ _ . _ . _ . ___ ¢ _ " CONSOLIDATED ROAD (S.R.1131 f "
MWALL
NV. NF-O.85 ------ - ------------------------- -------°---------?
?--- ------------- -----?--* ---°---------------------------- - --I
--OUTFLOW WEIR ?. '
? ? 1 1
+ 1
- - - - - - - - - - - - - - - - - --- - - - - -
/ -' - "- -? PROPOB®TA)MM /
BASE MAP PROVIDED BY HYMAN ROBEY I
P PLAT DATED 2/26/08
POND
SHEET 2 49,235 SF 1 7 I // I \
1
NATIONWIDE #14
ELIZABETH CITY MUNICIPAL AIRPORT TAXIWAY EXTENSION
1 2008
PASQUOTANK COUNTY NORTH CAROLINA '
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DATE: 3/26/08 REVISED: FILE: 08-001 DRAWN BY. DOUG D ??