20040338 Ver 1_COMPLETE FILE_20040305

6F WA T??Q
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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division•of Water Quality
April 28, 2004
DWQ# 04-0338
Dare County
Dr. Scott Leedy
3104 Walnut Street
Harrisburg, PA, 17109
APPROVAL of 401 Water Quality Certification with Additional Conditions
Dear Dr. Leedy:
You have our approval, in accordance with the attached conditions, to place fill in 0.051 acre of Coastal Wetlands
and Estuarine Waters in order to construct a seaplane ramp at your residence in Duck, Dare County, as described in your
application received by the Division of Water Quality on March 5, 2004. After reviewing your application, we have
determined that this fill is covered by General Water Quality Certification Number 3400, which can be downloaded from our
web site at http://h2o.enr.state.nc.us/ncwetlands . This Certification allows you to use your CAMA Permit when issued by
the NC Division of Coastal Management. In addition, you should get any other federal, state or local permits before you go
ahead with your project including (but not limited to) Sediment and Erosion Control, Non-Discharge, Water Supply
Watershed, Coastal Stormwater and U.S. Coast Guard regulations. Also this approval will expire when the accompanying
CAMA Permit expires unless otherwise specified in the General Certification.
This approval is only valid for the purpose and design that you described in your application. If you change your
project, you must notify us in writing and you may be required to send us a new application for a new certification. If the
property is sold, the new owner must be given a copy of the Certification and approval letter and is thereby responsible for
complying with all conditions. If total wetland fills for this project (now or in the future) exceed one acre, compensatory
mitigation may be required as described in 15A NCAC 2H .0506 (h). For this approval to be valid, you must follow the
conditions listed in the attached certification and the additional conditions listed below:
1. You are required to return the attached Certification of Completion form to notify DWQ when all work included in
the 401 Certification has been completed;
2. 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.
3. No waste, 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;
NCDENR
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), (httu://h2o.enr.state.nc.us/ncwetlands)
Customer Service #: 1-877-623-6748
Dr. Scott Leedy
April 28, 2004
Page 2 of 2
4. 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.
If you do not accept any of the conditions of this certification, 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 conforming 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.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you
have any questions, please telephone Tom Steffens in our Washington Regional Office at [phone] or Cyndi Karoly in
our Central Office in Raleigh at [phone].
Si cerely,
Alan W. Klimek, P.E.
AW K/cbk
Attachments
cc: Corps of Engineers Washington Field Office
Washington DWQ Regional Office
Central Files
File Copy
Doug Huggett, DCM
Kendall Turnage, P.O. Box 3368, Kill Devil Hills, NC, 27948
040338
4

DIVISION OF COASTAL MANAGEMENT
FIELD INVESTIGATION REPORT
1. APPLICANT'S NAME: Scott Leedy
2. LOCATION OF PROJECT SITE: NC 12, 1358 Duck Rd, Carolina Dunes Subdivision, Currituck
Sound, Town of Duck, Dare County
Photo Index - 2000: 186-2182, Q-12 thru Q-13, P-12 & P-13; 1995: 185-1945, M-11 &M-12
State Plane Coordinates, X: 2 955 025; Y: 904 875; GPS: D032015A
3. INVESTIGATION TYPE: CAMA / D & F
4. INVESTIGATIVE PROCEDURE: Dates of Site Visit - 1/29/2004
Was Applicant Present - No
5. PROCESSING PROCEDURE: Application Received Complete - February 18, 2004
Office - Elizabeth City
6. SITE DESCRIPTION:
(A) Local Land Use Plan - Dare County
Land Classification From LUP - Conservation
(B) AEC(s) Involved: Public Trust Area, Estuarine Waters, Estuarine Shoreline / Coastal Shoreline,
Coastal Wetlands
(C) Water Dependent: Yes
(D) Intended Use: Public
(E) Wastewater Treatment: Existing - septic tank for existing residence; Planned : none additional;
(F) Type of Structures: Existing- single family residence; Planned - Sea plane ramp with a turn
around area.
(G) Estimated Annual Rate of Erosion: 1.0
Source - Applicant
7. HABITAT IMPACT DESCRIPTION:
[AREA]
EXCAVATION FILL SHADING
(A) Coastal Wetlands 600 sq. ft.
(0.014 A)
(B) Public Trust/Estuarine 1,600 sq. ft.
Waters (0.037 A)
(C) Upland / Estuarine Shoreline 5,400 sq. ft.
(0.124 A) area
includes concrete parking
& ramp & stormwater
retention areas
(D) Total Area Disturbed: 7,000 sq. ft. (NOTE: this total is slightly less than the above accumulative
habitat-fill impacts due to the overlying areas of wetlands and waters)
(E) Primary Nursery Area: No
(F) Water Classification: SC; Open : No
FIELD INVESTIGATION REPORT
Scott Leedy, Dare County
Page 2
8. PROJECT SUMMARY: This project involves the construction of a 25 feet wide seaplane ramp
with an approximately 3,000 square foot turn-around and parking area at the landward end of the
ramp near the rear of the applicant's Carolina Dunes Subdivision residence in the Town of Duck,
along the Currituck Sound. The proposed ramp will be constructed from a combination of concrete
and geo-web material. The ramp structure will extend into the Currituck Sound a distance of 64 feet.
Geo-web material will be installed through the existing wetland fringe and offshore areas to minimize
impacts to coastal resources along. the shoreline and offshore ramp alignment area.
Project Setting
The application site is located on the west side of NC 12 within the Carolina Dunes Subdivision, in
the Town of Duck in Dare County. The project site address is 1358 Duck Road and is platted as
Lot 97, Section B, of Carolina Dunes. The property consists of a three-story, single-family
residential structure with an airplane hanger area located within the rear basement section of the
dwelling. Dr. Scott Leedy, of Harrisburg, Pennsylvania, is the owner of this sound-front
residence. Approximately 5,000 square feet of the 20,000 square feet lot is presently covered with
impervious surfaces, almost all of which is more than 75 feet from the shoreline.
The lot is 75 feet in width, and extends from NC 12 west to the Currituck Sound. The shoreline
of this lot angles to the northwest at 45 degrees, and includes over 100 linear feet of shoreline
along the Currituck Sound. The lot topography ranges from a high dune ridge along NC 12 and
slopes gradually to the shoreline. The site was recently filled prior to the construction of the
residence, and is a higher elevation than the property to the immediate north. The Leedy residence
is situated midway on the property, and except for the shoreline area, the existing driveway-
parking area, and an open area directly behind the residence, the property is vegetated in a mixture
of natural and ornamental grasses and shrubs. The driveway-parking area is located on the east
side of the dwelling and extends from NC 12 to the residence along the north property line. This
area is covered with rock and gravel material.
A coastal wetland fringe is present along the existing shoreline and ranges in width between 6 and
16 feet. This fringe consists of a variety of coastal species including Spartina cynosuroides,
Spartina patens, Scirpus spp., and Spartina alterniflora. Thick fringes of Juncus roemerianus and
Spartina cynosuroides are also located along the shoreline on properties to the immediate north and
south. A section of Juncus roemerianus root mat is also present along the western-most point of
the shoreline, and appears to have been stressed previously either by erosion or human activities.
This portion of the wetland fringe appears to be re-emerging with both Juncus and Spartina
alterniflora. It should be noted that the presence of Spartina alterniflora along the Normal Water
Level (NWL) this far north is not common.
R
F
FIELD INVESTIGATION REPORT
Scott Leedy, Dare County
Page 3
The North Carolina Environmental Management Commission has designated this vicinity of the
Currituck Sound as `SC' waters (suitable for fish propagation). The North Carolina Marine
Fisheries and Wildlife Resources Commissions classify the waters of the Currituck Sound as Joint
Waters. During the site investigation, no shellfish were observed along the water bottom;
however, submerged aquatic vegetation, although not visible during the time of this site visit, are
known to be present offshore. The water depth, at 60 feet offshore, does not exceed lfoot below
the NWL.
A number of Areas of Environmental Concern (AEC) designated by the Coastal Resources
Commission (CRC) exist in this area. These include Estuarine Waters, Public Trust Area, Coastal
Shoreline extending in a contour of 75 feet landward of the NWL, and also Coastal Wetlands.
Project Description
The applicant is a member of the medical profession. The applicant's Duck residence serves as a
weekend and summer vacation cottage, as well as a short-term rental property. This single-family
dwelling has been constructed to include a small airplane hanger within the first floor of the
structure. It is the applicant's desire to construct a ramp that can be used to taxi a small seaplane
from an offshore landing in the Currituck Sound to this existing facility. The current proposal is
the applicant's second attempt to obtain CAMA Permit authorization to construct a seaplane ramp
at this current location. The current proposal differs from the previous proposal in that the
applicant has attempted to reduce significant impacts to the existing wetland fringe that were
recognized during the earlier application review.
This project involves the construction of a 25 feet wide seaplane ramp that will extend into the
shallow water bottom of the Currituck Sound. The ramp structure will extend waterward 64 feet
beyond the NWL, and approximately 35 feet landward of the NWL. The structure will include
approximately 3,000 square feet of concrete area to provide for the ramp, the plane turn-around,
and parking area. These are situated at the landward end of the ramp near the plane hanger
entrance at the rear of the applicant's residence. The proposed ramp will be constructed of a
combination of concrete and geo-web material. Geo-web material will be installed by vibrating
the material through the existing wetland fringe and offshore areas. The material proposed consists
of 8-inch wide poly-type material with approximately one-half inch holes. The geo-web material
will be spread apart to the desired ramp width and then installed to an 8-inch depth. This material
has been used previously to provide slope stabilization, as well as in the installation of gravel
backfilled ramps.

FIELD INVESTIGATION REPORT
Scott Leedy, Dare County
Page 4
This product was originally designed and used by the U.S. Air Force for plane runways. This is
the first use of this material with the intent to minimize impact of hardened driving surfaces upon a
wetland shoreline. The Houston, Texas, based manufacturer, will install the material. It is
anticipated that the use of this material and installation technique will allow-the coastal wetland,
and submerged aquatic vegetation along the shoreline and on the offshore water bottom to continue
to grow within the proposed ramp alignment area. If traffic on the ramp remains infrequent, this
may provide a more eco-friendly alternative than the use of hardened impervious surfaces typically
used for ramps. The concrete portion of the ramp will start approximately 15 feet landward of the
shoreline, and will be landward of existing wetland vegetation. The remaining approximately 60
feet of area between the ramp and hanger will be used as a plane turn-around and parking area.
This area will be 55 feet wide, and will include a French drain inlet in the center of the turn-
around/parking area. The areas adjacent to the ramp and parking areas will be bordered with river
rock landscaping to provide for stormwater drainage, retention, and treatment. The French drain
will drain toward these stormwater retention areas.
The project also includes miscellaneous stone retaining walls between grassed, rocked, and
concrete areas, stone light columns, a wooden walkway at the rear of the residence, as well as two
sets of steps.
Anticipated Impacts
The anticipated impacts from this project are associated with the proposed airplane ramp and the
concrete turn-around/parking area. These impacts are directly associated with impervious area, the
possible loss of function of the wetland fringe, and adjacent submerged aquatic vegetation. A
breakdown of these areas is as follows:
• Public trust/estuarine waters/shallow water habitat 1,600 square feet
• Coastal wetland area 600 square feet
• Estuarine shoreline/upland 5,355 square feet
• Submerged aquatic vegetation, undetermined, but estimated to be 1,500 square feet
The Estuarine shoreline and upland areas that will be disturbed, and/or covered with impervious
materials, can be broken down as follows:
• Concrete ramp 655 square feet
• Concrete parking and plane turn-around area 3,150 square feet
• Rocked stormwater retention swales 1,550 square feet
FIELD INVESTIGATION REPORT
Scott Leedy, Dare County
Page 5
The proposed seaplane ramp project will result in almost the entire Estuarine Shoreline of the
Leedy property to be covered with impervious surfaces. Although the applicant has obtained
Stormwater approval from the NC Division of Water Quality, the proposed retention swales, being
surfaced with rock-gravel material, may act more as gutters. These structures should also include
some type of French drain characteristics to allow for stormwater to be retained longer and/or
more likely recharged into the water table.
Since the proposed structure will be located within a residential area, it is logical to expect that
noise from the plane landing and taking off will be an anticipated impact. This issue should be
addressed through any local planning review process.
Although some issues on the previous application review tended to view this seaplane ramp and
facility as a non-water dependent structure, the U.S. Coast Guard considers these vessels in the
same category as boats, once they have landed on the water surface. In this regard, this facility
should be considered as a water dependent structure, although the rules of the CRC and the
provisions of the Coastal Area Management Act do not specifically refer to seaplanes.
Submitted by: Dennis W. Hawthorn
Revised Date: March 2, 2004
PROJECT NARRATIVE
Application Type: CAMA MAJOR
Property: Carolina Dunes, Sec. B Lot 97
1358 Duck Road
Existing Single Family Residence
with amphibious aircraft hangar
Overview of Proposed Development:
JAN 0 7 2o,94
Owner: Dr. Scott Leedy
3104 Walnut St.
Harrisburg, PA 17109
717-657-1392
1. Construct a Presto Geoweb amphibious aircraft (flush with existing substrate)
2. Construct 484.5 SF concrete (above NWL) amphibious aircraft ramp extension
3. Place gravel along the concrete/ Geoweb transition for smooth transition
4. Construct concrete 3,251 SF parking and turn-around area and associated and fill activities
5. Construct lighted navigation posts (2'x 2'x 3') near approach to parking area
6. Clearing of vegetation within the AEC to provide adequate wing clearance (no clearing
waterward of coastal wetland alignment by NCDCM staff).
7. Construct 3.5 feet wide stairs within the 30 ft. buffer (southwest side of parking area)
8. Construct 3.5 feet wide wood walk/stairs on north side of parking area.
9. Construct 2 elevated vegetated infiltration areas to provide stormwater infiltration areas
(450 SF Total)
Will include: 1- 3 feet high retaining wall on south side of property to stabilize dune
2- 1 foot high retaining walls landward of 30 ft buffer
1- 1 foot high retaining wall along north side of property
737 SF x 1 foot of fill = (737 CF/27)=27.2 CY sandy fill
(fill material must match physical characteristics of Corolla fine sand)
10. Plant vegetation within the non-elevated stormwater infiltration area adjoining north side
of ramp
11. Plant Spartina sp. tubers and other coastal wetland species below the NWL within the
honeycomb shaped holes in the Geoweb ramp (approx. 5400 holes)
12. Place sod within 30 ft buffer (landward of coastal wetland alignment) to stabilize disturbed
sediments and to provided vegetated filter.
Narrative:
Impact reductions from previous submittal:
I . No excavation below NWL
2. No concrete fill below NWL
3. No sandy fill below NWL
4. 1600 SF fill below NWL has been reduced to 42.4 SF
5. Substrate coverage in ramp area reduced from 100% down to 2.6%
6. Substrate around Geoweb will become stabilized and planted with wetland vegetation
7. Fill volumes below NWL reduced from 23.6 CY of concrete and riprap to 1.26 CY of
Geoweb
8. Existing wetland vegetation can be protected by incorporation into the Geoweb pattern
9. The perforated, pervious, honeycomb, shaped Geoweb provides substrate stabilization and
an excellent monitoring system for wetland species planting for mitigation of proposed
impacts.
lo. Vegetation roots and rhizomes can expand horizontally and vertically into the substrate.
11. No riprap will be required along sides of entire ramp(only ramp shoreline intersection)
12, No cofferdam or dewatering required for construction.
13. No stormwater runoff will drain directly to surface waters.
14. No thermal loading of surface waters from runoff from concrete.
15. This redesign will still provide a better ecological situation than the alternative of a pier-
moored aircraft.
16. Installation of the Geoweb material flush with the existing substrate will not hamper
sediment flow patterns in the area.
Dr. Scott Leedy is requesting construction activities associated with the installation of a
Geoweb and concrete amphibious aircraft ramp, concrete parking and turn-around pad and
impact mitigation activities. The existing house has a built in hangar and fire protection system
for the hangar area. This construction will be performed as close as possible to the aircraft
manufacturer's specifications. Similar ramp applications in shallow sandy lakes in Florida
(with -2 feet average depths) are currently in use and are adequate for safe ingress/egress of
aircraft. Please contact aircraft manufacturer if additional information or confirmation of
aircraft capabilities is needed. The ramp was designed to follow existing grades as closely as
possible to result in no excavation and to minimize fill to only that necessary to -provide safe
ingress /egress.
This construction will first include the clearing of vegetation within the AEC to provide
adequate wing clearance and working space on the property. Low growing vegetation will be
planted in place of the cleared vegetation to provide ground cover for control of sedimentation,
erosion and bio-filtration prior to runoff discharge.
The Geoweb cellular confinement system was developed jointly by the Army Corps of
Engineers and Presto Products for landing of C 130 Hercules Aircraft on sandy beaches,
environmentally sensitive areas, or unstable soils. Its use has been expanded to include slope
stabilization, vegetation stabilization, shoreline erosion control, stream restoration, boat ramps
and other similar projects in ecologically sensitive areas. The collapsible Geoweb sections are
easily transported into remote areas and will provide a safe, stable ramp while maintaining the
natural appearance of the environment in a low angle wave attack areas. A Vibracore can
install the Geoweb flush with the existing substrate with minimal disturbance to existing
vegetation and soils and provide no degradation in scenic vistas of the surrounding area. The
existing Spartina sp. and Scirpus pungens beds (that are presently declining in aerial coverage
because of erosion) can be protected by incorporation into the ramp design and supplemented
by plantings of additional coastal wetland vegetation in each of the honeycomb shaped holes.
This will stabilize the ramp, existing vegetation, mitigate for impacts to the existing substrate
and wetland vegetation and will provide a natural appearance to the subsurface Geoweb ramp
and surrounding substrate.
The most likely failure of new wetland species plantings is estuarine environments is due to
excessive wave energy in wind/wave dominated environments such as the Currituck Sound.
The Geoweb can minimize the exposure and undermining of roots and rhizomes by its ability
retain sediment and stabilize the existing gently sloping substrate.
The Geoweb also provides a grid system for the monitoring of vegetation planting for the
mitigation. This system will allow for any plantings to be replaced with minimal impact to the
surrounding plants that do thrive. The lateral and vertical holes in the Geoweb will allow for
the plants to spread by rhizomal growth and root structures to be protected from the wave
energy of the Currituck Sound.
The concrete portion of the ramp will be constructed with a grooved ramp surface to allow for
stormwater to flow 60 degrees laterally to pervious Geoweb and the infiltration area. Tl.ds
redesign will result in NO direct runoff into the surface waters.
Fill activities for the parking and turnaround area will then proceed with final grades being
established. The concrete portion of the ramp, parking and turn-around area will then be
surfaced with concrete, the french drain constructed and graded to drain to infiltration areas per
plans.
Infiltration areas and retaining walls will then constructed per plans. The area surrounding the
ramp will be stabilized as soon as possible with landscaping and sod to provide a vegetated
filter to runoff and to stabilize uncovered soil. The infiltration areas will be landscaped with
Juniper communis and other low growing plants to allow for adequate and safe wing clearance
of aircraft.
The 3.5 ft wide stairs and 3.5 ft wood walk to access the parking area will then be constructed.
Landscapers will then complete the vegetative and aesthetic features of the infiltration and
vegetated areas.
Two 2'x 2' x 3'Lighted Stone columns will then be constructed as navigational aids.
Form DCM-MP-1

2004
y
APPLICATION A?rd? sryr,
(To be completed by all applicants)
1. APPLICANT
a. Landowner:
b. City, town, community or landmark
Duck
c. Street address or secondary road number
1358 Duck Road
Name Dr. Scott Leedv
Address 3104 Walnut Street
City Harrisburg- State PA
Zip 17109 Day Phone [phone]
Fax [phone]
b. Authorized Agent:
Name Environmental Professionals. Inc.
Address PO Box 3368
City Kill Devil Hills State NC
Zip 27948 Day Phone [phone]
Fax [phone]
c. Project name (if any) Scott Leedv
NOTE: Permit wi11 be issued in name of landowner(s), and/or
project name.
2. LOCATION OF PROPOSED
PROJECT
a. County Dare
d. Is proposed work within city limits or planning
jurisdiction? X Yes No
e. Name of body of water nearest project (e.g. river,
creek, sound, bay) Currituck Sound
3. DESCRIPTION AND PLANNED USE
OF PROPOSED PROJECT
a. List all development activities you propose (e.g.
building a home, motel, marina, bulkhead, pier, and
excavation and/or filling activities.
Construction of a Geoweb amphibious aircraft ramp.
and associated fill activities. Two (2ft x 2ft x 3ft high)
stone lighted navigation markers are also requested
for safe in ress/egress of aircraft. Fill activities
relating to stormwater infiltration system landward of
30 ft buffer. Clearing of vegetation within the AEC
for adequate wing clearance. A 3.5 ft wood walk and
3.5 ft stairs will be constructed to access parkin area
for aircraft.
b. Is the proposed activity maintenance of an existing
project, new work, or both? new
c. Will the project be for public, private or commercial
use? private
d. Give a brief description of purpose, use, methods of
construction and daily operations of proposed project.
If more space is needed, please attach additional
pages. SEE ATTACHED NARRATIVE
U-4-4 n'2me
Form DCM-MP-1
APPLICATIONJAN 0 7 9;
(To be completed by all applicants)
Coastal (marsh) X Other X (fringe margin of 404)
4. LAND AND WATER If yes, has a delineation been conducted? No
CHARACTERISTICS (Attach documentation, ifavailable)
a. Size of entire tract 0.461 acres
b. Size of individual lot(s) N/A
c. Approximate elevation of tract above MHW or NWL
2-5 above MHW feet within AEC
m. Describe existing wastewater treatment facilities.
Individual septic system
n. Describe location and type of discharges to waters of
the state. (For example, surface runoff, sanitary
wastewater, industrial/commercial effluent, "wash
down" and residential discharges.) Surface Runoff
d. Soil type(s) and texture(s) of tract
Corolla fine sand
e. Vegetation on tract Mvrica cerifera Spartina
alterniflora, scirpus pungens
f. Man-made features now on tract House. Hangar,
driveway
g. What is the CAMA Land Use Plan land classification
of the site? (Consult the local land use plan.)
Conservation X Transitional
Developed _ Community
Rural _ Other
h. How is the tract zoned by local government?
Residential
Is the proposed project consistent with the applicable
zoning? X Yes No
(Attach zoning compliance certtficate, if applicable)
j. Has a professional archaeological assessment been
done for the tract? Yes X No
If yes, by whom?
k. Is the project located in a National Registered
Historic District or does it involve a National Register
listed or eligible property?
Yes X No
1. Are there wetlands on the site? X Yes No
o. Describe existing drinking water supply source.
Dare County Water System
5. ADDITIONAL INFORMATION
In addition to the completed application form, the
following items must be submitted:
• A copy of the deed (with state application only) or
other instrument under which the applicant claims title
to the affected properties. If the applicant is not
claiming to be the owner of said property, then forward
a copy of the deed or other instrument under which the
owner claims title, plus written permission from the
owner to carry out the project.
• An accurate, dated work plat (including plan view
and cross-sectional drawings) drawn to scale in black
ink on an 8 1/2" by 11" white paper. (Refer to Coastal
Resources Commission Rule 7J.0203 for a detailed
description.)
Please note that original drawings are preferred and
only high quality copies will be accepted. Blue-line
prints or other larger plats are acceptable only if an
adequate number of quality copies are provided by
applicant. (Contact the U.S. Army Corps of Engineers
regarding that agency's use of larger drawings.) A site
or location map is a part of plat requirements and it
must be sufficiently detailed to guide agency personnel
unfamiliar with the area to the site. Include highway or
secondary road (SR) numbers, landmarks, and the like.
uPIA-1 nzioc
Form DCM-MP-1
•A Stormwater Certification, if one is necessary.
•A list of the names and complete addresses of the
adjacent waterfront (riparian) landowners and
signed return receipts as proof that such owners
have received a copy of the application and plats by
certified mail. Such landowners must be advised that
they have 30 days in which to submit comments on the
proposed project to the Division of Coastal
Management. Upon signing this form, the applicant
further certifies that such notice has been provided.
Name Gary and Stella Michnik
Address 1114 NW 9& Way Plantation. FL 33322
Phone [phone]
Name David and Nancy Forr
Address Rd 5 Box 885 Altoona PA 16601
Phone
Name Dr. Scott Leedy (not notified --applicant)
Address 3104 Walnut St. Harrisburg PA 17109
Phone
• A list of previous state or federal permits issued for
work on the project tract. Include permit numbers,
permittee, and issuing dates.
CAMA Minor #2001-108
CAMA Violation 402-22A
• A check for $250 made payable to the Department of
Environment, Health, and Natural Resources
(DEHNR) to cover the costs of processing the
application.
• A signed AEC hazard notice for projects in
oceanfront and inlet areas.
• A statement of compliance with the N.C.
Environmental Policy Act (N.C.G.S. 113A - 1 to 10)
If the project involves the expenditure of public funds
or use of public lands, attach a statement documenting
compliance with the North Carolina Environmental
Policy Act.
6. CERTIFICATION AND PERMISSION
TO ENTER ON LAND
I understand that any permit issued in response to this
application will allow only the development described in
the application. The project will be subject to conditions
and restrictions contained in the permit.
I certify that to the best of my knowledge, the proposed
activity complies with the State of North Carolina's
approved Coastal Management Program and will be
conducted in a manner consistent with such program.
I certify that I am authorized to grant, and do in fact, grant
permission to representatives of state and federal review
agencies to enter on the aforementioned lands in
connection with evaluating information related to this
permit application and follow-up monitoring of the
project.
I further certify that the information provided in this
application is truthful to the best of my knowledge.
„d coq
This is the day of -Y.,?wi , 2683
Print Name kei-,Je- l ( 'TLk Y-," u ?,tf ,? ?T.'. r)
Signature
Landowner orAuthorizedAgent
Please indicate attachments pertaining to your proposed
project.
X DCM MP72 Excavation and Fill Information
X DCM MP-3 Upland Development
X DCM MP-4 Structures Information
DCM MP-5 Bridges and Culverts
DCM MP-6 Marina Development
NOTE. Please sign and date each attachment in the
space provided at the bottom of each form.
Form DCM -MP-2
EXCAVATION
AND FILL
(Except bridges and culverts)
Attach this form to Joint Application for CAMA
Major Permit, Form DCM-MP-1. Be sure to
complete all other sections of the Joint Application
that relate to this proposed project.
Describe below the purpose of proposed excavation
or fill activities. All values to be given in feet.
Average Final
Existing Project
Lenath Width Depth Depth
Access
channel
(MLW)or
(ML)
Canal
Boat
basin
Amphibious
Aircraft Ramp
BELOW NWL
1.26 CY Geoweb,
ABOVE NWL
0.28 CY Geoweb
6.5 CY concrete
10.5 CY sand
1.4 CY Gravel
Rock
Groin
Rock (rip rap)
Breakwater
Other
PARKING AREA
N/A ------- ------- -------
N/A -------- -------- --------
N/A ------- ------- -------
amp to amp to
1?? 25.5 ollow follow
average verage
testing existing
contours contours
N/A -------- ---- -------
N/A ------- ------- -------
N/A ------ ------- -------

JAN U l 21-F!.:,

1. EXCAVATION N/A
a. Amount of material to be excavated from below
MHW or NWL in cubic yards None
b. Type of material to be excavated N/A
c. Does the area to be excavated include coastal
wetlands? Yes X No
d. Highground excavation in cubic yards N/A
2. DISPOSAL OF EXCAVATED
MATERIAL N/A
a. Location of disposal area N/A
b. Dimensions of disposal area N/A
c. Do you claim title to disposal area? N/A
Yes No
If no, attach a letter granting permission from the
owner.
d. Will a disposal area be available for future N/A
Maintenance? Yes No
If yes, where? N/A
e. Does the disposal area include any coastal
wetlands(marsh), SAVs or other wetlands?
Yes No N/A
f. Does the disposal include any area in the water?
Yes No N/A
Revised 03/95
Form DCM-MP 2
3. SHORELINE STABILIZATION concrete portion of ramp. -
a. Type of shoreline stabilization
Bulkhead X Riprap
b. Length 13' along shoreline
Average distance waterward of MHW or NWL
3 ft
d. Maximum distance waterward of MI-1W or NWL
3 ft.
e. Shoreline erosion during preceding 12 months
1 foot
(Source
information)
of Applicant, Dr. Leedy
f. Type of bulkhead or riprap material
clean granite rip rap
g. Amount of fill in cubic yards to be placed below
water level
(1) Riprap 1.0 CY maximum
(2) Bulkhead fill N/A
h. Type of fill material: Clean granite rip rap
i. Source of fill material: permitted quarry
4. OTHER FILL ACTIVITIES
(Excluding Shoreline Stabilization)
a. Will fill material be brought to site?
X Yes No
If Yes,
(1) Amount of material to be placed in the
Water 1.26 CY Geoweb below NWL
(2) Dimensions of fill area 42.4 SF (collapsed)
64 ft X 25.5 ft (expanded with 2.6% coverage of substrate)
(3) Purpose of fill Geoweb Amphibious
Aircraft Ramp (water
Dependent)
OTHER-- 79 cubic yards of sand to provide
base for plane parking and turn around area
and stormwater treatment areas.
60 cubic yards of concrete will be required to
construct parking/turn around area and
b. Will fill material be placed in coastal wetlands
(marsh), SAVs or other wetlands?
X Yes No
The ramp will require the emplacement of the Geoweb by
a vibracore into the existing mixed substrate of sand and
peat.
5. GENERAL
a. How will excavated fill material be kept on site
and erosion controlled?
N/A
b. What type of construction equipment will be
used (for example, dragline, backhoe, or
hydraulic dredge)?
Vibracore, Front end loader above NWL
c. Will wetlands be crossed in transporting
Equipment? X Yes No
If yes, explain steps that will be taken to lessen
Environmental impacts.
A fringe margin of 404 exists along the
Shoreline in the ramp area. Better defined by
coastal wetland alignment stakes (Consisting of
saturated sands. Only the area to be filled by the
Seoweb ramp and rip rap shoreline stabilization
will be disturbed. Spartina tubers will be planted
in the honeycomb shaped holes in the eoweb
ramp.
The vibra core and geoweb material will be able
to be hand carried into the ramp emplacement
area
ScottLeedv EPI # 01-141
Applicant or Project Name
Signature R f ?'
Date !
Revised 03/95

Form DCM-MP-3
UPLAND
DEVELOPMENT
(Construction and/or land disturbing activities)
Attach this form to Joint Application for CAMA Major
Permit,
Form DCM-MP-1. Be sure to complete all other sections of
the Joint Application that relate to this proposed project.
a. Type and number of buildings, facilities, units or
structures proposed
Geoweb ramp, partial concrete ramp
Amphibious aircraft parking and turn around pad
(concrete), stormwater infiltration areas
b. Number of lots or parcels
c. Density _(giye- the number of residential units and the units
per acre) 1 per 0.46lacres
d. Size of area to be graded, filled or disturbed including
roads, ditches, etc. Approximately 6000 SF
e. If the proposed project will disturb more than one acre of
land, the Division of Land Resources must receive an
erosion and sedimentation control plan at least 30 days
before land disturbing activity begins. If applicable, has a
sedimentation and erosion control plan been submitted to
the Division of Land Resources? _ Yes X No
If Yes, date submitted N/A less than one acre
f. List the materials (such as marl, paver stone, asphalt, or
or concrete) to be used for paved surfaces.
Concrete , gravel transition between geoweb and concrete
g. Give the percentage of the tract within 75 feet of MHW or
NWL, or within 575 feet in the case of an Outstanding
Resource Water, to be covered by impervious and/or built-
upon surfaces, such as pavement, buildings, rooftops, or to
be used for vehicular driveways or parking. 52.4%
3404 SF
h. Projects that require a CAMA Major Development Permit
may also require a Stormwater Certification. Has a site
development plan been submitted to the Division of
Environmental Management for review?
JAN 0 7

X Yes No
If yes, date submitted 313103
i. Describe proposed method of sewage disposal.
Existing on-site septic system
j. Have the facilities described in Item i. above received
state or local approval? Yes, system is in place
(Attach appropriate documentation)
k. Describe location and type of proposed discharges to
waters of the state (for example, surface runoff, sanitary
wastewater, industrial/commercial effluent, "wash down"
and residential discharges).
Surface runoff
1. Describe proposed drinking water supply source
(e.g. well, community, public system, etc.)
Dare County water system
in. Will water be impounded? _ Yes X No
If yes, how many acres? N/A
n. If the project is an oceanfront development, when was the
lot(s) platted and recorded? N/A
Dr. ScottLeedv EPI #01-141
Applicant or Project Name
14
Signature
1 /.-,
Date
?a'E?uGra ?
Form DCM-MP-4
STRUCTURES
(Construction within Public Trust Areas)
Attach this form to Joint Application for CAMA Major Permit,
Form DCM-MP-1. Be sure to complete all other sections of
the
Joint Application which relate to this proposed project.
a. Dock(s) and/or Pier(s) N/A
(1) Commercial Private - Community _
(2) Number
(3) Length
(4) Width
(5) Finger Yes , No X
Piers
(i) Number
(ii) Length
(iii) Width
(6) Platform(s) Yes X No
(i) Number
(ii) Length
(iii) Width
(7) Number of slips proposed N/A
(8) Proximity of structure to adjacent riparian property
lines N/A
(9) Width of water body N/A
(10) Water depth at waterward end of pier at NEW or
NWL N/A
e. Mooring buoys N/A
(1) Commercial
JAN 0 7 ('}?,;; ,
l
Private_ Community
(2) Number N/A.
(3) Description of buoy (Color, inscription, size, anchor, etc.
N/A
(4) Width of water body N/A
(5) Distance buoy(s) to be placed beyond shoreline
N/A
f. Mooring structure (boatlift, mooring pilings, etc.) N/A
(1) Commercial Community Priv
(2) Number
(3) Length
(4) Width
g. Other (Give complete description)
Geoweb and concrete amphibious aircraft ram
Stormwater infiltration areas
Concrete Parking and turn around area for aircraft
(2)- Stone navigational columns
b. Boathouse (including covered lifts) N/A
(1) Commercial Private
(2) Length
(3) Width
C. Groin (e.g. wood, sheetpile, etc.) N/A
(1) Number N/A
(2) Length
d.
Breakwater (e.g. wood, sheetpile, etc.) N/A
(1) Length
(2) Average distance from MHW, NWL, or
wetlands
(3) Maximum distance beyond MHW, NWL or
wetlands
Dr. Scott Leed
Applicant of Project Name
Signature
/ X a /0 y
D,Ite
Revised 03/95
IAN Q 7

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,
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,
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GROOVED BOAT RAMP, _`..
SURFACE DETAIL
CURRITUCK SOUND
WATER LEVEL
GROOVE ANGLE I
DESIGN
2" SPACING
I" DEEP
AT 60° ANGLE TO
SIDE OF RAMP
U
SCALE 1"=5'
GROOVES NOT TO SCALE
1
Feet meters
• ?''?' 15000
:
c. . ,c
. 4500
r JA KI - 0,

L
! J 14ooD
' n 12'3 0„
4007 13000 4000

12000
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/ 3500
o. : .
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_ 11000

a
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aopg
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8000 2500

7000
" 2000
O
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? 4005

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1500

.. ?`? 'ii ' ..
O ... 4000,
i

4004 1000

° 3000
900
( 0 0 } °.
? 800

\: 1

t
p
S a .

2000
700
6
00

i 500
? x 4 ?? r4 400
A ,. . ;. o a ;.. 1000 300
e 200
100
D 0
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m a? Goer ?ra rr:
Q D Q
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t
, e
ers
i S DKN l?G J c75 t Ca Gt:?"?L./? q r ?L° Cy e 2 .6D96
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914
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or .
4
4 1.2192
5 1.5240
6 1.8288

'
S. • '.Q 7 2.1336
8 2.4384

! . '
: .: :.. N 9 2.7432
10 3.0480

To convert feet to meters
multiply by .3048
I I
a` To convert meters to feet
multiply by 3.2808
CO

aerit $yt FINCH AND COMPANY;
252 261 6719; Apr-1-02 5:59PM; Page 2/2
p;
nab Co?in? 6
Local Govainment
CA MA
J AN (17
DEVELOPMENT
3 11i .s`'1 t' PERMIT
2001-1018
perrr,it f+tumb®r
as authorized by the state of North C$rolina, Department of Envifonmant
W Natural Resources and the Coastal Resources Commission for development
in an area of environmental concern pursuant to section 113A-t 18 of the
General Statutes, "Coastal Area Management."
issued to r authorizing development in -
a 13 8 Due R r.
as requested in the permittea's application, dated 12'18-Ot
12-28-01 is subject to compliance with the application and site drawing (where consistent
This permit, issued on
with the permit), all applicable regulations and ?o r the permit to baonuilbgnd voidny violation of these terms may subject
permittee to a fine, Imprisonment or civil act may cause .......-..--•-r ------°--
V DYNE
A AteMC-ffll ?Q HO
P&WIT B ME
1. All proposed developtn w?en ssociated construction must
be done in act permitted work plat drawing as
originally submitted.
2. All construction must conform to N.C. BBuiilding Cade requirements and
all father local, state and federal regulations.
3. Any change or changes in the pleas for development, construction,
or bind use activities will require a re-evaluation and modification of
this permit.
4. This permit does not authorize development in wetlands.
5. Silt fence 11 be placed between fill and shoreline, landward of
normal water level.
This permit action may be appealed by the permitter or other
qualified persons within twenty (20) days of the Issuing data.
From the date of an appeal, any work conducted under this per-
mit mist cease until the appeal is resolved.
This permit must be on the project site and accessible to the
permit officer when the prajeCt is inspected for compliance.
Any maintenance work or project modifications not cover ad
under this permit requires further written permit approval.
All work must cease wu9r' hq December
' In issuing this permit it is agreed that this project is consistw?nt
with the local Land Use Plan and all applicable ordinances.
This permit may not be transferred to another party without
0- wrivan anorovai of the Division of Coastal Management.
L Ca! Permit OfflCer (5ig9t'?1tJr6)
.lt ads
Kill Devil Hills WOO {mice name
Drawer 1000 -
address
Manteo, NC 27954
-PerRe
(signature requirod if 3peeiai Conditions above apply to permit)
Michael F. Easley, Govenor
William G. Ross, Jr. Secretary
Department of Environment and Natural Resources
Alan W. idimek, P.E., Director
Division of Water Quality
June 4, 2003
Dr. Scott Leedy
3104 Walnut Street ??F F
Harrisburg, PA 17109
Subject: Permit No. SW7030411
General Stormwater Permit
Dare County
Dear Dr. Leedy:
The Washington Regional Office received the completed Stormwater Application for the subject
project on March 5, 2003. Staff review of the plans and specifications has determined that the
project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC
2H.1000. We are forwarding Permit No. SW7030411 dated June 4, 2003 to you.
This permit shall be effective from the date of issuance until rescinded and shall be subject to the
conditions and limitations as specified therein.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following
receipt of this permit. This request must be in the form of a written petition, conforming to Chapter
150B of the North Carolina General Statutes, and filed with the office of Administrative Hearings,
P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be
final and binding.
943 Washington Square Mall, Washington, North Carolina 27889 Telephone [phone] FAX [phone]
An Equal opportunity Affirmative Action Employer
Page 2
Dr. Scott Leedy
June 4, 2003
If you have any questions or need additional information concerning this matter, please contact
Mr. Robert Tankard at [phone], extension 233.
Sincerely,
Jim Mulligan
Water Quality Supervisor
Washington Regional Office
cc: 3/Environmental Professionals
Dare County Inspections
Washington Regional Office
Central Files
948 Washington Square Mail, Washington, North Carolina 27889 Telephone [phone] FAX [phone]
An Equal opportunity AfUrmative Action Employer
State Stormwater Management Systems
Permit No. Smm411
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMI'T' JAN 2 2
w J
GENERAL PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina
as amended, and other applicable Laws, Rules and Regulations
PERMISSION IS HEREBY GRANTED TO
Dr. Scott Leedy
Dare County
FOR THE
construction, operation and maintenance of stormwater management systems in compliance with
the provisions of 15A NCAC 2R1000 (hereafter referred to as the "stormwater rules') and the
approved stormwater management plans and specifications, and other supporting data as attached
and on file with and approved by the Division of Water Quality and considered a part of this permit
for the property located on 1358 Duck Road, Duck, NC.
The Permit shall be effective from the date of issuance until rescinded and shall be subject to the
following specific conditions and limitations.
L DESIGN STANDARDS
1. 0.10 acres of new impervious areas are proposed.
2. Approved plans and specifications for projects covered by this permit are
incorporated by reference and are enforceable parts of the permit.
3
3. No stormwater piping in addition to the existing piping shall be allowed except:
a. That minimum amount necessary to direct runoff beneath an impervious
surface such as a road.
b. That minimum amount needed under driveways to provide access to lots.
IL SCHEDULE OF COMPLIANCE
1. Grasslined swales, vegetated buffers and other Best Management Practices used for
stormwater runoff control shall be adequately maintained throughout the life of the
project.
2. The permittee shall at all times provide adequate erosion control measures in
conformance with the approved Erosion Control Plan.
3. The permittee shall submit all information requested by the Director or his
representative within the time frame specified in the written information request.
IIL GENERAL CONDITIONS
Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to an enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statutes 143-215.6A to 143.215.6C.
2. The permit may be modified, revoked or terminated for cause. The filing of a
request for a permit modification, or termination does not void any permit condition.
3. The issuance of this permit does not prohibit the Director from reopening and
modifying laws, rules, and regulations contained in Title I SA of the North Carolina
Administrative Code, Subchapter 2H.1000; and North Carolina General Statute 143-
215.1 et.al.
4. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size
b. Project name change
c. Transfer of ownership
d. Redesign or addition to the approved amount of built-upon area.
e. Further subdivision of the project area
f In addition, the Director may determine that other revisions to the project
should require a modification to the permit.
4
5. For any additions or modifications of the previously permitted built upon area, the
permittee shall submit to the Director revised plans and specifications and shall
receive approval prior to construction.
6. The Director may notify the permittee when the permitted site does not meet one or
more of the minimum requirements of the permit. Within the time frame specified
in the notice, the permittee shall submit a written time schedule to the Director for
modifying the site to meet minimum requirements. The permittee shall provide
copies of revised plans and certification in writing to the Director that the changes
have been made.
7. The permit is not transferable to any person except after notice to and approval by
the Director. The Director may require modification or revocation and reissuance of
the permit to change the name and incorporate such other requirements as may be
necessary. A formal permit request must be submitted to the Division of Water
Quality accompanied by the appropriate fee, documentation from both parties
involved, and other supporting materials as may be appropriate. The approval of
this request will be considered on its merits, and may or may not be approved.
8. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances which may be imposed by other
government agencies (local, state and federal) which have jurisdiction.
Permit issued this the 0 day of Tune 2003.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT C011 MSSION
rr
r- 2 lan W'Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7030411
943 Washington Square Mall, Washington, North Carolina 27889 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer

STORMWATER NARRATIVE
DR. SCOTT LEEDY
By: Kendall Turnage
Environmental Profession
1/19/04
This stormwater application is being requested for an amphibious aircraft ramp and parking area for Dr.
ScottLeedy. This development request exceeded 30% impervious coverage within the AEC, therefore
Division of Water Quality stormwater Approval was required. On March 3, 2003 a stormwater
application was submitted to the NC Division of Water Quality. After review, NCDWQ Stormwater
Permit #SW7030411 was issued on June 4, 2003 to cover 65.3% impervious area within the AEC.
The redesign utilizing a Geoweb ramp has reduced the impervious area within the AEC from 65.3 % to
54.4 %, which falls below the previously permitted levels.
Due to the topography of the site and elevation of the existing hangar, the stormwater receiving areas
will have to be designed within the AEC. The system treating stormwater from non water dependant
structures has been design to be landward of the 30 foot buffer. This design represents a compromise
between existing features, proposed ramp construction, and constraints within the AEC. It also exhibits
the most plausible and economically feasible solution to the drainage issue. - The aircraft ramp is
considered water dependent by the Division of Coastal Management therefore is a permitted activity
within the AEC.
DESIGN FEATURES:
Ramp:
The Geoweb portion of the ramp is a vertically and laterally pervious that was jointly designed by the
Army Corps of Engineers and the Air Force for vehicular transport and aircraft landing in sands and
other environmentallt sensitive areas. The remaining portion of the stormwater will be transported
laterally within thirty feet of normal water level will be transported laterally by 60 degree (see details)
grooves in ramp surface and to be treated through infiltration within the thirty foot buffer. This drainage
design is possible due to the existing shoreline configuration and allows for the infiltration of all possible
water derived from ramp surface to infiltrate.
Parking and Turn Around Area:
Site soils (Corolla fine sands) exhibit infiltration rates of greater than 20 inches per hour. (Copy of
physical and chemical characteristics of soils from USDA Soils Survey attached). Two areas (Totaling
450 sq. ft.) will be constructed as elevated vegetated infiltration areas. These will receive stormwater
from the aircraft parking/turn around area through an open design French drain, this will allow for easy
cleaning of drainage routes to the infiltration areas. No piping will be required to accomplish this
drainage design.
The infiltration areas will be contained by retaining walls and the concrete pad and will be forced to
infiltrate. River rock will be used at the outlet points to prevent erosion of retention area.
Therefore, with the current design, all stormwater that falls within the AEC will remain and infiltrate
within said AEC, thereby providing equal protection to the maximum extent possible, provided by the 30
percent limitation.

SAN f
CALCULATIONS
ENTIRE PARCEL
Total area of parcel: 20,081 SF (0.461 acres)
Existing Home/Decks/Hangar 2,964 SF
Driveway 2,184 SF
Ramp 413 SF
Parking/ turn around area 3,251 SF
TOTAL IMPERVIOUS= 8,812 SF (43.9%)
AEC CALCULATIONS:
Total Area within the AEC 6,492.5 SF
Ramp (concrete + gravel) area within AEC 413 SF
Parking/ Turn around area Win AEC 2,991 SF
TOTAL IMPERVIOUS WITH 75'. AEC= 3404 SF (52.4%)
INFILTRATION CAPACITY REQUIRED:
1.5" EVENT
3,251 SF X 1.5"= 58,518 cubic inches/hour
4.3 " EVENT
3,251 SF X 0.5=167,752 cubic inches/hour
INFILTRATION CAPACITY PROVIDED:
737 SF x 20 inches of infiltration/hour =176,880 cu. inches hour (minimum)
Site soils consist of Corolla fine sands with a minimum infiltration rate of >20 inches per hour.
Infiltration areas will exists at approximately 3 feet above normal water level of the Currituck Sound
(4.1 feet above MSL, NGVD vertical datum). Groundwater exists at approximately 1.5 ft above MSL
(NGVD datum), providing at least 2.0 feet of separation.
NOTE: 737 sq. feet = the sum of the two infiltration areas provided on the north and south sides of the
parking/ turnaround area. (450 SF and 287 SF respectively).

96 JAN 2 1 Soil Survey
TABLE 16.--PHYSICAL AND CHEMICAL PROPERTIES OF THE SOILS
(The symbol < means less than; > means more than. Entries under "Erosion factors--T" apply to the entire
profile. Entries under "Organic matter" apply only to the surface layer. Absence of an entry indicates
that data were not available or were not estimated)
I I I I I I I I Erosion 1
Soil name and IDepthl Clay I Moist IPermeability JAvailablel Soil IShrink-swell I factors 1 Organic
map symbol I I I bulk I I water Ireactionl potential I I I matter
I I I density I Icapacity I I I K I T I
1 In 1 Pct I g/cc I In/hr I In/in 1 pH I I I I Pct
I f I I I. I i I I I
BaC-------------- 1 0-321 0-8 11.60-1.751 6.0-20 10.02-0.0614.5-6.5 JLow---------- 10.101 5 1 .5-1
Baymeade 132-461 8-26 11.45-1.601 2.0-6.0 10.10-0.1414.5-6.5 ILow---------- 10.101 1
146-801 0-12 11.60-1.751 6.0-20 10.02-0.1014.5-6.5 1Low---------- 10.101 1
I I I I I I I I
BeA*. I I I I I I I I I I
Beaches 1 ( 1 ? I I I I I I
I I I I I `I I I 1 I
BnD*: I I I I I I I I I I
Beaches. I I I I I I I I I I
I I I I I i I I I I
Newhan---------- 1. 0-801 <5 11.60-1.751 >20 1 <0.05 15.6-7.8 ILow---------- 10.101 5 1 <.5
I I I I I I I I I I
EVA-------------- 1 0-381 --- 10.40-0.651 0.2-6.0 10.20-0.261 <4.5 ILow ---------- I ---- I --- 1 20-95
Belhaven 138-471 5-15 11.45-1.651 2.0-6.0 10.10-0.2413.6-5.5 ILow---------- 10.241 I
147-721 10-35 11.30-1.451 0.2-0.6 10.12-0.2013.6-6.5 ILow---------- 10.241 1
1 1 1 1 1 1 1 1 1 1
CaA-------------- 1 0-131 5-15 11.30-1.501 0.6-6.0 10.15-0.2214.5-6.5 ILow---------- 10.151 5 1 5-15
Cape Fear 113-481 35-60 11.25-1.401 0.06-0.2 10.12-0.2213.6-6.0 Moderate ----- 10.321 1
148-721 5-30 11.40-1.701 --- I --- I --- I ------------- I ---- I I
1. I I I I I I I I I
CeA-------------- 1 0-801 5-12 11.45-1.601 >6.0 10.02-0.1015.6-8.4 ILow---------- 10.151 5 1 .5-2
Carteret I I I I I I I I I I
I I I I I I I I i I
CnA-------------- 1 0-141 --- 10.40-0.651 0.2-2.0 10.20-0.2613.6-5.5 ILow ---------- I ---- I --- 1 20-60
Conaby 114-601 5-12 11.60-1.751 2.0-6.0 10.04-0.1013.6-5.5 ILow---------- 10.101 1
I I I I I I I I I I
CoB-------------- 1 0-751 0-3 11.60-1.701 >20 10.01-0.0315.6-7.8 ILow---------- 10.101 5 1 <.5
Corolla I I I ( I I i I I I
1 I I I I I I I I I
CrB*: I I I I Corolla---------1 0-751 0-3 11.60-1.70 10.01-0.0315.(-7.8 ILow----------10.101 5 1 <.5
1 1 I I . I I I I
Duckston-------- 1 0-8 1 0=4 11.60-1.701 >20 10.02-0.0813.6-8.4 ILow---------- 10.101 5 1 .5-3
1 8-801 0-4 11.60-1.701 >20 10.02-0.0513.6-8.4 ILow---------- 10.101. I
I I I I i I I I I I
CuA--------- ----- 1 0-171 --- 10.25-0.401 0.6-6.0 10.25-0.3514.5-5.5 ILow---------- I---- 1 2 1 ---
Currituck 117-401 --- 10.35-0.551 0.6-6.0 10.25-0.3513.6-5.5 ILow---------- I---- I I
140-651 3-10 11.60-1.751 6.0-20 10.04-0.0913.6-5.5 ILow ---------- I ---- I I
I I I I I I I I I I
DtA-------------- 1 0-8 1 0-4 11.60-1.701 >20 10.02-0.0813.6-8.4 [Low ---------- 10.101 5 1 .5-3
Duckston 1 8-801 0-4 11.60-1.701 >20 10.02-0.0513.6-8.4 ILow---------- 10.101 1
I I 1 I I I I 1 I 1
DuE*------------- 1 0-601 0-1 1 --- I >20 10.03-0.041 --- ILow---------- 10.101 5 1 <.1
Dune land I I I I I I I I I I
I I I I I I I I I I
DwE*: I I I I I I I I 1 i
Dune land-------1 0-601 0-1 1 --- I >20 10.03-0.041 --- ILow---------- 10.101 5 1 <.1
I I I I I I I I I I
Newhan---------- 1 0-801 <5 11.60-1.751 >20 1 <0.05 15.6-7.8 iLow---------- 10.101 5 1 <.5
I I I I I I I I I I
FrD-------------- 1 0-4 1 <5 11.30-1.701 6.0-20 10.02-0.0815.1-7.8 ILow---------- 10.101 5 1 <1
Fripp 1 4-801 <5 11.30-1.701 6.0-20 10.01-0.0315.6-7.8 ILow---------- 10.101 1
I I I I I I I I I I
HoA-------------- 1 0-161 --- 10.20-0.651 0.6-6.0 10.20-0.2514.5-5.5 ILOw ---------- I ---- I --- 1 20-60
Hobonny 116-721 --- 10.40-0.701 0.6-2.0 10.20-0.2513.6-5.5 ILow---------- 10.151 1
I I I I I I I I I I
See footnote at end of table.
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Seaplane
Environmental
Surmnary
Issues
INTRODUCTION
S taplaries excel at providing fast, safe, low-impact
transportation to remote and sensitive areas,
Explorers, researchers, backoounrry hikers and
baekpackcrs, search and rescue teams, law
enforcement agencies, sportsmen, and many othcr
groups use seaplanes to satisfy their transportation
needs. As we become more environmentally
conscious, the impact of traditional modes of
transportation is under increasing scrutiny. This
document summarizes what is known about the
environmental impact of seaplanes.
IWACT STUDIES
treated with toxic antifouling paints. Unlike many
boats, exhaust from seaplane engines is discharged
into the air, well above the water's surface, where it
can dissipate without significantly impacting water
quality. Aviation fucl does not contain MTBE, a toxic
additive found in automotive and marine fuels..
Furthermore, aviation fuel is not mixed with oil, and
thus contains a fraction of the oil and oil residue found
in two-stroke marine exhaust.
A seaplane's propellers are entirely above the water,
and thus do not disturb sediments or marine life. Most
seaplanes generate a wake of only two to three inches
in amplitude. And although seaplanes generate noise
levels comparable to large motorboats, that noise lasts
only the 20 to 60 seconds that a seaplane requires to
take off and depart the area.
v ery few environmental impact assessments have
been conducted on seaplanes. The U.S. Army
Corps of Engineers' environmental appraisal of
seaplane operations on the Sacramento District Project
Lakes stands as one of the few unbiased reports. Their
conclusions:
1. Air Quality. no impact
2. Water Quality: no impact
3. Soil Quality: no impact
4. Wildlife: no impact
S, Fisheries. no impact
6. Hydrology: no impact
7. Noise: similar to that created by a. large
speedboat
J.7. Frey, President of the EDO Float Corporation,
presented testimony for a study of the Kenai River to
the affect that tlomplanes generate no more than a two
to throe inch wake, not enough to b; a factor in
shoreline erosion.
RELATIVE IMPACT
S caplanes compare favorably to other forma of
mechanized transportation, including boats and
automobiles.
Seaplanes and cars are comparable in direct
environmental impact, but seaplanes are distinctly
better for the environment when indirect impacts are
considered. Whereas seaplanes require only a body of
water and suitable beach, dock, or ramp, automobiles
require an extensive network of roadways that are
expensive to build and maintain, occupy valuable land,
and adversely affect water quality, soil quality, and
wildlife.
CONCLUSION
eaplancs do not significantly impact the
environment. Seaplanes compare very favorably
to conventional motorized boats in areas of air and
water pollution, wakes, and disturbance of plants,
wildlife, and sediments. Noise generated by seaplanes
is similar in amplitude to that generated by large
speedboats, but unlike motorboats, noise from a
seaplane is brief and transitory. Seaplanes also
compare favorably to automobiles, primarily because
seaplanes do not require an intrusive or extensive
infrastructure.
Thorc is no factual basis for the restriction of
seaplanes for environmental reasons at locations
where motorized boats are permitted. Further,
Seaplanes have a number of environmental advantages seaplanes are acceptable modes of transportation even
over motorized boats. Seaplanes do not store or on many waterways that arc inappropriate for use by
d'sch oil bil water or sewage and are not motorized boats.
t sibs y ge ,
Please forward comments of quesdons to rho Seaplane Pilots Association, 4315 Highland Park Blvd, Suite C, Lakeland, FL 3381$.
The Seaplane Pilots Association is a non-profit Individual membertliip organization with over 7,500 members world-wide.
i nVol f.VVVr VVV r-ovo
Sea lane
ompati alit
ssu?s
Summary
SEAL'LANE ?URTSDTCTT N
As we have stated, seaplanes are very versatile.
They are, of course, aircraft. But they are also
classified in the U.S. Ports and Waterways Safety Act
as vessels when on the water.
Without doubt, municipalities including counties and
port districts have legitimate interests relative to the
safe operations of seaplanes within their jurisdictions.
However, both the federal and state governments have
jurisdictional authority over seaplane operations even
when over and on the water in and adjacent to
municipalities,
Federal Jurisdiction.
The federal government's interest in seaplanes
emanates from a number of sources. The most
predominant are, (1) the Commerce Clause of the U.S.
Constitution, which gives Congress broad powers to
regulate and to protect interstate commerce, and (2) the
Federal Aviation Administration (FAA), which is
responsible for aviation standardization and safety.
Navigalik-waterways are one of the most active areas
where the United States exercises its commerce
authority. The FAA, of course, promulgates aircraft
operating regulations.
State Autbority
State govcmments accepted the responsibility to
protect access to and use of navigable waterways
when they became states. This includes, of course, the
operation of vessels. Most states recognize this as the
Public Trust Doctrine. Case law has shown that this
responsibility is one which cannot be set aside by state
governments even if they wished to do so.
Cooperation is vital
Consequently, cooperation between seaplane
operators, municipal authorities and, when necessary,
officials of state and federal agencies is necessary to
insure that seaplane operations remain safe and have
limited noise impact while protecting the rights of this
mode of transportation.
SUMMARY
Seaplane use has a place in an effective
transportation system. Today's emphasis at
federal, state and regional levels on intetmodal and
multimodal transportation mandates that all legitimate
forms of transpottation be considered.
The record shows seaplanes to be an extremely safe
mode of transportation. Noise impacts can be
successfully mitigated in most instances by careful
planning and considerate pilot technique.
Few modes of transportation are as capable as
seaplanes to serve both metropolitan and remote areas
as effectively and efficiently.
ADDITIONAL INFORMATION
The Seaplane Pilots Association is a non-profit,
organization made up of members involved in all
aspects of seaplane manufacturing and operations.
We are committed to safe and "community friendly"
seaplane operating practices and stand ready to
provide additional information about the benefits and
requirements of seaplanes.
Please write us at.
Seaplane Pilots Association
4315 Highland Park Blvd, Suite C
Lakeland, Florida 33813
Or visit us online:
www.seaplanes.org
Flease forward comments or qot srlons to the Seaplane Pilots Association, 4W Highland Park Blvd. Suire C, Lakeland, PL 33813.
Ae Seaplane Pilots Association is a non•pty It individual membership organization with over 7,500 memberv world-wale.
ALT, 15AFA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Coastal Management
Michael F. Easley, Governor Charles S. Jones, Acting Director William G. Ross Jr., Secretary
March 2, 2004
MEMORANDUM:
TO:
FROM:
40t3.3?
Mr. John R. Dorm
Environmental Biological Supervisor
Division of Water Quality
Doug Huggett
Major Permits Processing Coordinator
GROUP
SUBJECT:
Applicant:
BAR
2044
WAr&R QIJ y
Sscrlov
CAMA/DREDGE & FILL Permit Application Review
Dr. Scott Leedy
Project Location: 1358 Duck Road, Carolina Dunes Subdivision, Town of Duck
Proposed Project: Construction of an amphibious aircraft ramp and associated fill activities
Please indicate below your agency's position or viewpoint on the proposed project and return this
form by March 22, 2004. If you have any questions regarding the proposed project, please contact
Dennis Hawthorn at [phone]. When appropriate, in-depth comments with supporting data
are requested.
REPLY: This agency has no objection to the project as proposed.
This agency has no comment on the proposed project.
This agency approves of the project only if the recommended changes are
incorporated. See attached.
This agency objects to the project for reasons described in the attached
comments.
SIGNED DATE
1367 U.S. 17 South, Elizabeth City, North Carolina 27909
Phone: [phone] \ FAX: [phone] Internet: www.nccoastalmanagement.net
An Equal Opportunity 1 Affirmative Action Employer - 30% Recycled by Fiber Weight
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