20080859 Ver 1_CAMA Application_20080522

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KE
KELLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
April 4, 2008
Mickey Sugg
US Army Corps of Engineers
Wilmington Regulatory Field Office
69 Darlington Avenue,
Wilmington, NC 28403
Re: Audubon Villages
Keller Environmental Job No. 0669
Carteret County, North Carolina
Dear Mr. Sugg:
ma' EL; ,
%EWED
APR 2:4'2-008
REGULKrpHY
WILM.FLD.OFC.
Thank you for your assistance with this Audubon Villages project for the past 18 months.
We are pleased to submit the following project to you for US Army Corps of Engineers (COE)
404 approval. We are requesting to place approximately 100,000 cubic yards into 5.74 Acres of
Non-riparian wetlands. We have attached several items to assist your review of the project. If
you should have questions or require additional clarification please feel free to contact me at 844-
7437 (office), 749-8259 (cell) or email: layOkellerenvironmental.com.
Sincerely,
Keller Environmental, LLC

Jay Keller
Principal
55
s`
MAY 22 2008

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APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT OMB APPROVAL NO. 0710-0003
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number. Please DO NOT RETURN your form to either of those addresses. Completed applications must be submitted to the District Engineer having
jurisdiction over the location of the proposed activity.
PRIVACY ACT STATEMENT
Authorities: Rivers and Harbors Act, Section 10, 33 USC 403; Clean Water Act, Section 404, 33 USC 1344; Marine Protection , Research and
Sanctuaries Act, 33 USC 1,113, Section 103. Principal Purpose; Information provided on this form will be used in evaluating the application for a
permit. Routine Uses: This information may be shared with the Department of Justice and other federal, state, and local government agencies.
Submission of requested information is voluntary, however, if information is not provided the permit application cannot be evaluated nor can a permit
be issued.
One set of original drawings or good reproducible copies which show the location and character of the proposed activity must be attached to this
application (see sample drawings and instructions! and be submitted to the District Engineer having jurisdiction r I lion of the proposed
activity. An application that is not completed in full will be returned 11 lam
(ITEMS 1 THRU 4 TO BE F[IIFn RY THE r_naPCI `? lp-- 1-41 !6, .
1. APPLICATION NO. 2. FIELD OFFICE CODE 3, DATE RECEIVED 4. EZPRLffeN COMPLETED

!ITEMS BELOW TO BE FILLED BY APPLICAN
5. APPLICANT'S NAME 8. AUTHORIZED AGENT'S NAME AND TITLE ran agent is not revuiref/l
Nils Ladenburg Jay Keller; owner/principal
6. APPLICANT'S ADDRESS 9. AGENT'S ADDRESS
4628 N. Croatan Hwy; Kitty Hawk, NC 27949 1 7921 Haymarket Lane; Raleigh, NC 27615
T. APPLICANT'S PHONE NOS. W/AREA CODE 10. AGENT'S PHONE NOS. W/AREA CODE
a. Residence a. Residence
b. Business 252-261-7400 b. Business 919-844-7437
11, STATEMENT OF AUTHORIZATION
I hereby authorize, Jay Keller to act in my behalf as my agent in the processing of this application and to
furnish, upon request, supplemental information in support of this permit application.
APPLICANT'S SIGNATURE U DATE
000-
NAME, LOCATION AND DESCRIPTION OF PROJECT OR ACTIVITY
12. PROJECT NAME OR TITLE (see instructions.
Audubon Villages
'13. NAME OF WATERBODY. IF KNOWN 1 14. PROJECT STREET ADDRESS ofepplicab/el
15. LOCATION OF PROJECT
Carteret
COUNTY
North Carolina
STATE
16. OTHER LOCATION DESCRIPTIONS, IF KNOWN, rseelnsvuorionsl
n. ?
Tract 1 34.7498°N, 76.5703°N; PIN#733703018968000
rnr. o ?Tlt"„ten, nn n^r. r. nnn
17. DIRECTIONS TO THE SITE
Northeast of Beaufort, NC Take US-70 out of Beaufort toward Harkers Island. At the
intersection of Harkers Island Road, Turn RIGHT. Site is on the right -1.7 miles.
ED W [A
e 9
a
MAY 2 ?, 2008
ENG FORM 4345, u 9 EDITION OF FEB 94 IS OBSOLETE, (Proponent: CECW-OR)
18. Nature of ACti Vity (Description of project, include all fewrures)
Tract 1: This Proposed Residential Development is designed in accordance to the local
conservation ordinance. Emphasis was placed on preservation and creation of open space,
parks, and greenways. Use of Low-impact development strategies and BMP's are proposed to be
implemented. They include items such as 7 ponds (23+ acres), stormwater wetlands,
recreational areas, and landscape open space with greenways. Plan comprised of approximately
444 dwellinci units. p
19. Project Purpose (Descrlhe the reason or purpose of the project, see instructions)
To construct a neighborhood and medium sized commercial shopping center to address the need
and demand for conservation-oriented housing and adequate retail establishments.
USE BLOCKS 20.22 IF DREDGED AND/OR FILL MATERIAL IS TO BE DISCHARGED
20. Reason(s) for Discharge
The proposed retail shopping center proposes the discharge of 100,000 cubic yards of fill
material associated with the filling and grading of the subject retail outlet and their
associated parking and driveways.
21. TVpe(s) of Material Beino Discharged and the Amount of Each Tvoe in Cubic Yards
100,000 cubic yards of fill material is proposed to be discharged into the 5.47 acres of
wetlands on Tract 2. This fill material includes sand, clay, and stone.
22. Surface Area in Acres of Wetlands or Other Waters Filled (.veeinsrrucdonc!
5.47 acres of wetlands are proposed to be filled on Tract 2. Equipment to be used includes
trackhoes, bulldozers, and other land grading equipment. While under construction, temporary
.,rtnI I - A ,t ?;A ..-F f-ho orl oT A- -A 23. Is Any Portion of the Work Already Complete? Yes No K IF YES, DESCRIBE THE COMPLETED WORK
24. Addresses of Adjoining Property Owners, Lessees, Etc., Whose Property Adjoins the Waterbody (If more than can be entered here,
please attach a supplemental list).
Please refer to attached Sheet with Location Map (Appendix I).
25.. List of Other Certifications or Approvals/Denials Received from other Federal, State or Local Agencies for Work Described in This Application.
.%A
AGENCY TYPE APPROVAL" IDENTIFICATION NUMBER DATE APPLIED DATE APPROVED DATE DENIED
Carteret Cot3 Plan Approval April 17, 2
ould include but is not restricted to zoning, building and flood plain permits
26. Application is hereby made for a permit or permits to authorize the work described in this application. I certify that the information in this
application is complete and accurate. I further certify that I possess the authority to undertake the work described herein or am acting as the
duly authorized agent of the applicant.
SIGNATURE OF APPLICANT DATE Ste" IGNATURE OF AGENT
DATE
The application must be signed by the person who desires to undertake the proposed activity (applicant) or it may be signed by a duly
authorized agent if the statement in block 11 has been filled out and signed.
18 U.S.C. Section 1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of the United States
knowingly and willfully falsifies, conceals, or covers up any trick, scheme, or disguises a material fact or makes any false, fictitious or
fraudulent statements or representations or makes or uses any false writing or document knowing same to contain any false, fictitious or
fraudulent statements or entry, shall be fined not more than $10,000 or imprisoned not more than five years or both.
Audubon Villages Additional Information
Block 16
Tract 1- 34.7498°N, 76.57031N; PIN#733703018968000
Tract 2- 34.74291N, 76.5585°W; PIN#733703209255000
Block 18
Tract 1: This Proposed Residential Development is designed in accordance
to the local conservation ordinance. Emphasis was placed on preservation
and creation of open space, parks, and greenways. Use of Low-impact
development strategies and BMP's are proposed to be implemented. They
include items such as 7 ponds (23+ acres), stormwater wetlands,
recreational areas, and landscape open space with greenways. Plan
comprised of approximately 444 dwelling units.
Tract 2: This Proposed Retail Shopping Center is 21.77 acres having 1,269
linear feet of roadway frontage on Harker's Island Road. There are a total
of 9.42 acres of jurisdictional wetlands in the project area. Primary
Buildings will be Grocery, Retail and Office Spaces. Out-parcels will
include Service Station, Bank, and Fast Food Restaurant.
Block 22
5.47 acres of wetlands are proposed to be filled on Tract 2. Equipment to
be used includes trackhoes, bulldozers, and other land grading equipment.
While under construction, temporary, custom sedimentation basins will be
installed outside of the wetlands and streams to protect them against
sedimentation along with other appropriate sedimentation and erosion
control measures in compliance with the DWQ and Carteret County
Sedimentation and Erosion Control requirements.
Block 25
Carteret County Planning Commission; Plan Approval; April 17, 2008
KE
KELLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
Introduction
Keller Environmental LLC appreciates the attention given to this project and working
with Gavin Davis, ASLA (EDA pa) for wetland remediation at the Audubon Village
project site. The developers of Audubon Villages are committed to the conservation
and restoration of natural ecosystems for the benefit of biological diversity in their
community and for their homeowners. We would like to offer the following justification
document related to our development plan and proposed impacts on jurisdictional
wetlands.
Background
The development project consists of a total of 226.88 acres. This is composed of two
tracts of land. Tract One (733703209255000) is 205.11 acres having 166 linear feet of
roadway frontage on Harker's Island Road (SR 1332) and 401 linear feet of roadway
frontage on Crow Hill Road. Tract Two (733703018968000) is 21.77 acres having
1,269 linear feet of roadway frontage on Harker's Island Road. Primary access to the
overall development is from Harker's Island Road (intersects directly with Hwy 70 East)
with secondary access from Crow Hill Road.
There are a total of 9.42 acres of jurisdictional wetlands in the project area. These
wetlands are confined to Tract Two. The wetlands do not cover a single contiguous
area. The wetlands consist of a 2.61 acre "pocket" generally in the center of the tract
and a 6.81 acre "pocket" located along the western edge of the tract. These wetlands
were confirmed during a site meeting with Mr. Mickey Sugg of the U.S. Army Corps of
Engineers (COE) on October 4, 2006. According to the U.S. Fish and Wildlife National
Wetland Inventory (NWI) Map, the only area on the subject site that is subject to their
criteria is located in the southwest corner of the agricultural field. The wetlands on
Tract Two do not appear on the NWI map.
Historical Use
The former owner of Tracts One and Two utilized the land for farming and silviculture,
respectively. During farming operations, Tracts One was cleared and graded to permit
row/field crop production. Tract Two was primarily a mature longleaf pine forest with
shrub understory prior to a non-selective method of tree harvesting was conducted in
2004/2005.
Audubon Villages
April 4, 2008
Page 2 of 8
Soils
USGS soils classification at the existing wetlands are Tomotley and Deloss. These
soils are defined by the USGS as follows.
Tm Tomotley fine sandy loam
Setting
Landscape: Coastal plains Elevation: 0 to 20 feet Mean annual precipitation: 42 to 58 inches
Mean annual air temperature: 61 to 64 degrees F Frost-free period: 190 to 270 days
Composition
Tomotley, drained, and similar soils: 80 percent of total site; Tomotley, undrained, and similar
soils: 10 percent of total site.
Description of Tomotley, drained
Setting
Landform: Depressions on stream terraces, flats on marine terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Sandy and loamy fluviomarine deposits and/or marine deposits
Typical Profile
0 to 8 inches: fine sandy loam
8 to 38 inches: sandy clay loam
38 to 43 inches: sandy loam
43 to 60 inches: loamy sand
Description of Tomotley, undrained
Setting
Landform: Flats on marine terraces, depressions on stream terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Sandy and loamy fluviomarine deposits and/or marine deposits
Typical Profile
0 to 8 inches: fine sandy loam
8 to 38 inches: sandy clay loam
38 to 43 inches: sandy loam
43 to 60 inches: loamy sand
43 to 60 inches: loamy sand Detailed Soil Map Units
De Deloss fine sandy loam
Setting
Landscape: Coastal plains Elevation: 0 to 10 feet Mean annual precipitation: 38 to 55 inches
Mean annual air temperature: 59 to 70 degrees F Frost-free period: 210 to 265 days
Composition
Deloss, drained, and similar soils: 80 percent Deloss, undrained, and similar soils: 10 percent
Audubon Villages
April 4, 2008
Page 3of8
Description of Deloss, drained
Setting
Landform: Depressions, flats
Down-slope shape: Concave
Across-slope shape: Linear
Parent material: Loamy fluviomarine deposits
Typical Profile
0 to 15 inches: fine sandy loam
15 to 45 inches: sandy clay loam
45 to 80 inches: fine sandy loam
Description of Deloss, undrained
Setting
Landform: Depressions, flats
Down-slope shape: Concave
Across-slope shape: Linear
Parent material: Loamy fluviomarine deposits
Typical Profile
0 to 15 inches: fine sandy loam
15 to 45 inches: sandy clay loam
45 to 80 inches: fine sandy loam
A soil analysis was conducted on site by Terracon Consultants, Inc. Hand auger tests
of existing wetlands indicate the following profile.
0 to 18 inches: topsoil
18 to 36 inches: gray and light gray sandy clay C See "j'
36 to 48 inches: light gray clayey fine sand
48-72 inches: light. gray and brown silty fine sand
Seasonal high water was determined a 2 feet with ground
permeability tests indicate an infiltration rate of .04 in/hr. SE
from the Geotechnical Engineering Report and EDA calculatior
Topography and Hydrology
The topography of Tract Two is relatively flat (.1-.2%). The average elevation change
is 1.0 foot. The tract drains from east to west with runoff from uplands and wetlands
entering an agricultural drainage ditch along the eastern boundary of Tract One. Water
entering this ditch is conveyed north to a larger ditch on Tract One. This ditch drains to
the west and outfalls near Crow Hill Road.
The topography of the site limits on-site water supply to the wetlands. 5.34 acres of
land area contribute to the 2.61 acre wetland and 11.83 acres contribute to the 6.81
acre wetland. The limited size of these contributing areas will make it difficult to
Audubon Villages
April 4, 2008
Page 4 of 8
provide a consistent water supply to maintain optimal wetland conditions and benefit
the performance of this wetland area.
Vegetation
Tract One entirely consists of cultivated crops. Recent plantings include corn and
soybeans.
The uplands within Tract Two support the following:
Common name Species Stratum WI status
Red maple Acer rubrum Shrub FACW
Sweetgum Liquidambar styraciflua S FAC+
American holly Ilex opaca S FAC-
Milkwort Polygala lutea S FACW+
Pokeberry Phytolacca americana S FACU+
Smooth sumac Rhus glabra S UPL
Blackberry Rubus trivialis S FAC
Dog fennel Eupatorium capillifolium Herb FACW+
Joe pye weed Eupatorium dubium H FACU
The wetland areas within Tract Two support the following:
Common name Species Stratum WI status
Red bay Persea borbonia Tree FACW
Red maple Acer rubrum Shrub FACW
Sweetgum Liquidambar styraciflua S FAC+
American holly Ilex opaca S FAC-
Milkwort Polygala lutea S FACW+
Wax myrtle Myrica cerifera S FAC+
Sedge Carex spp. Herb FAC-0131-
Rush Juncus spp. H FAC-0131-
Greenbriar Smilax laurifolia Vine FACW+
Land Use
Land use in the surrounding area consists of residential homes, agriculture, silviculture,
open water (Goose Bay), small businesses, and churches. The adjacent residential
areas are primarily single-family homes. There is an adjacent mobile home park to the
northwest that was constructed after 1994.
Historic Properties
KE personnel conducted a review of historic aerials of the subject site in January 2008
(see attached). Prior to this review, we also inquired the previous land owner of
Audubon Villages
April 4, 2008
Page 5of8
several decades, Mr. Jeffrey Taylor, about potential structures. According to both
accounts, there have not been any structures on the subject site.
Endangered Species
A search of the North Carolina Natural Heritage Program database was conducted to
determine whether any state or federally listed rare species have previously been
observed within or near the project area. This search found no known record of rare
species within the project site. There are two (2) known Federally-listed endangered
and threatened species know to occur in the "Harkers Island" USGS Quad area,
excluding coastal and marine species. They are seabeach amaranth (Amaranthus
pumilus) - threatened; and shortnose sturgeon (Acipenser brevirostrum)- endangered.
Habitat for these two species is absent on the subject site. Pursuant to the
Endangered Species of 1973, the proposed project should not have any effect on
federally listed endangered or threatened species or their formally designated critical
habitat.
Purpose and Need
The applicant's purpose and need is to develop an economically viable residential and
commercial development. The target population of this development is people
employed in the neighboring communities of Beaufort, Morehead City, and Harkers
Island, and people retiring to this area and members of the armed forces.
Site Plan
The proposed site plan for Tract Two consists of a roadway and neighborhood
commercial development. The proposed design will impact 5.47 acres or 58% of
existing jurisdictional wetlands. See attached drawings.
EDA conducted in-house studies for avoidance, minimization and mitigation to develop
an appropriate design solution for Tract Two. Their studies were influenced by the
following factors: Conformity to local code/ordinance, financial viability, soil and
hydrologic characteristics, traffic circulation and compatibility with adjacent land
owners.
Avoidance
EDA evaluated two avoidance scenarios related to the proposed site plan. The first
scenario looked at alternate locations for the entire 226 acre development. The second
scenario evaluated alternate locations of the neighborhood commercial component
within the 226 acre site.
Audubon Villages
April 4, 2008
Page 6 of 8
For Scenario One EDA conducted an MLS and Loopnet search of available land within
Carteret County. See attached. Of the 10 available properties within the search area
only two properties were of comparable size to the subject property. The Cedar Island
property (270 acres) was determined to be too distant from the market area to be
financially viable. The Hwy 101 I.C.W property (270 acres) is within reasonable
proximity to the subject property and target market. At $50 million, however, the cost of
land acquisition would dictate higher unit sale prices; pricing the development beyond
the target market. Further, both properties are waterfront properties. The proximity to
waters and likely greater acreage of wetlands would increase Federal/State/County
compliance requirements and would result in either a lower net developable area or
increased development costs or both.
For Scenario Two EDA evaluated alternate sites within the 226 acre property. After
careful evaluation the proposed site was found to be most suitable for the following
reasons:
Economy: The neighborhood commercial component is intended to serve the proposed
development and the needs of existing residents in the area. Currently, the area is
underserved by commercial development. To best attract commercial tenants the
commercial component must have an anchor store. The anchor acts to draw in other
tenants which make the development financially viable. Key to drawing the anchor is
development size and location. The development must be of sufficient size to support
the anchor's operations and it must be located where the store(s) will have the highest
visibility to the most consumers. Based on these criteria the location along Harker's
Island Road is most desirable as the property is large enough to support an anchor and
a sufficient number of other tenants to make the development viable. Further, the large
roadway frontage provides desirable visibility to those traveling on Harker's Island
Road to or from Highway 70. The access road location was also influenced by
economics. Placement of the access road north of the Parker property would have
reduced the developable area and value of the Tract north of the Parker property.
Traffic: The development is bordered by two existing State roads, Harker's Island Road
(SR 1332) and Crow Hill Road (SR 1333). A road (Open Water Parkway) will be built
to provide access to the residential development. This road will intersect Harker's
Island Road and Crow Hill Road. Harker's Island Road is the primary thoroughfare
between Harker's Island and Highway 70 East. Locating the commercial development
along Harker's Island Road will preserve traffic on the primary roadway rather than
draw a large number of vehicles through the residential development along Open
Water Parkway or divert a larger number of vehicles onto the less traveled Crow Hill
Road.
Compatibility with Adjacent Land Owners: The selected location was determined to
have the least impact on adjacent properties with respect to traffic, noise and views.
Traffic would be preserved on the existing primary thoroughfare. Subdivision traffic
Audubon Villages
April 4, 2008
Page 7 of 8
would be able to access the commercial area without entering onto Harker's Island
Road. Noise and views would be would be attenuated by a required 30' perimeter
development buffer and proposed wetland, park and open space west of the
development.
Soils/Hydrology: Waters generally drain from east to west on the 226 acre site.
Location of the commercial development at the western edge of the property places the
development at the highest point of the property farthest away from the drainage
discharge point. This allows for a longer train of storm water treatment for optimal
compliance with Federal/State/County guidelines.
Minimization
The proposed site plan was developed to minimize impacts on existing wetlands to the
maximum extent possible while meeting financial objectives of the owner and the
requirements of local ordinance. See attached Site Plan.
Financial Objectives:
Provide suitable plan to allow for anchor tenant (grocery) and associated tenants.
Provide suitable out parcels for other service needs in area (bank, gas, restaurant,
medical).
Ordinance Requirements:
COMMERCIAL LOT AREA 13.90 AC
BUILDING SETBACK REQUIREMENTS 40' FRONT
30' REAR
20' SIDE
PERIMITER LANDSCAPE BUFFER 20'
TOTAL EXISTING WETLAND 9.42 AC
PRESERVED WETLANDS 3.95 AC
TOTAL OPEN SPACE 4.52 ACRES (32%)
PARKING SPACES REQUIRED
(11200 SF of Floor Area) 500
PARKING SPACES SHOWN 500
SERVICE DRIVE AND BAYS 30' MINIMUM WIDTH
Audubon Villages
April 4, 2008
Page 8of8
Potential Environmental Impacts
The proposed project would impact 5.47 acres of non-riparian 404 wetlands.
Secondary impacts to wetlands and water quality could occur during and after
construction of the project through erosion and stormwater runoff. These potential
impacts will be minimized by the development and implementation of a stormwater plan
and a sedimentation and erosion control plan. These plans will reduce the potential for
erosion into wetlands and other water bodies located off site.
Mitigation
As mentioned previously, wetland mitigation will be required for the proposed impacts.
Mitigation for the proposed impacts of 5.47 acres will be required. To mitigate for the
proposed wetland impacts, all remaining wetlands will be preserved to ensure no
additional impacts beyond what is being requested here. Because the project's
cumulative impacts are greater than 1 acre, the Division of Water Quality (DWQ) will be
requesting restoration and therefore, payment to the NC-EEP in-lieu fee fund is
proposed (see attached EEP acceptance letter). Due to the preservation site being
offered as mitigation and the low quality of the proposed impacted wetland area, we
propose a payment to EEP for a 1:1 mitigation rate. The NCEEP has preliminarily
agreed to accept payment for and provide any additional required wetland mitigation,
for up to 5.47 acres. Furthermore, over 23-acres of landscaped ponds will provide
multi-function benefits such as stormwater retention and treatment, recreation, and
natural aesthetics.
Conclusion
This proposed site plan and mitigation measures have been produced in accordance
with USACOE principals (avoidance, minimization and mitigation). We believe the
proposed development and mitigation measures provide the best balance of the core
principals.
Thank you for your attention to this matter. If we can be of any further assistance or
provide any other information for this site please do not hesitate to contact me at 844-
7437 (office), 749-8259 (cell) or email: jay(ckellerenvironmental.com.
Sincerely,
Keller Environmental, LLC
Jay Keller
Principal
APPENDIX A - USGS Topographic Survey Map
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APPENDIX B - Soil Survey Maps
1987 Carteret County NRCS Soil Survey Map
2008 NRCS Web Soil Survey Map
Topographic and NRCS Soil Map
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Soil Map-Carteret County, North Carolina
Audubon Villages
Map Unit Legend
Carteret County; North Carolina (NC031)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
AaA Altavista loamy fine sand, 0 to 2
percent slopes 401.3 16.5%
Ag Augusta loamy fine sand 29.4 1.2%
Ap Arapahoe fine sandy loam 233.4 9.6%
ByB Baymeade fine sand, 1 to 6
percent slopes 8.6 0.4%
CnB Conetoe loamy fine sand, 0 to 5
percent slopes 0.2 0.0%
De Deloss fine sandy loam 414.3 17.0%
HB Hobucken mucky fine sandy
loam, frequently flooded 249.0 10.2%
Ln Leon sand 44.3 1.8%
Se Seabrook fine sand 19.9 0.8%
StA State loamy fine sand, 0 to 2
percent slopes 9.3 0.4%
Tm Tomotley fine sandy loam 566.6 23.3%
W Water 450.4 18.5%
WaB Wando fine sand, 0 to 6 percent
slopes 8.9 0.4%
Totals for Area of Interest (AOI)
2,435.4 100.0%
USDA Natural Resources Web Soil Survey 2.0 1262008
Conservation Service National Cooperative Soil Survey Page 3 of 3
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APPENDIX C - Geotechnical & Hydrology
Geotechnical Report
Hydrological Conditions

GEOTECHNICAL ENGINEERING REPORT
AUDUBON VILLAGES
HARKERS ISLAND ROAD
BEAUFORT, NORTH CAROLINA
TERRACON PROJECT NO. 72075094
January 9, 2008
Prepared for.
CHRISTI CONSTRUCTION
4628 North Croatan Highway
Kitty Hawk, North Carolina 27949
Prepared by.
TERRACON CONSULTANTS, INC.
314 Beacon Drive
Winterville; North Carolina 28590
Phone: [phone] Fax: [phone]
Audubon Villages January 9, 2008
Beaufort, NC Terracon Project No. 72075094
• Performed permeability testing on the samples obtained using the ASTM D5084
test method.
• Issued this written report summarizing our findings and the results of the
laboratory testing.
FINDINGS
Nand Auger Bofings and Permeability Testing
Boring locations and sample depths were selected by the client. Terracon personnel
were on site to perform forty-four hand auger borings and to visually classify the soils in
general accordance with the Unified Soil Classification System. Hand auger borings HA-
20, HA-21, HA -38 and HA-40 were omitted due to being in the same locations with the
lake soil test borings. The borings generally encountered approximately 6 to 12 inches
of grass and topsoil at the ground surface. Below the topsoil, the borings generally
encountered silty sand, clayey sand and sandy clay. The soils became more clayey
towards the southern and western portions of the site. Groundwater was measured at 3
to 5 feet below the existing grades for most portions of the site. Groundwater was
encountered at approximately 2 feet below the existing grades within the southern and
western portions of the site. The hand auger locations and generalized soil conditions at
each boring location were given in the Appendix.
Soil samples near the current ground water table elevation were also obtained from each
hand auger boring location and returned to the laboratory for permeability testing. The
flex wall permeability testing were performed in general accordance with ASTM
Standard D 5084. A permeability sample was not obtained from auger boring HA-42
due to the groundwater and the sandy soil conditions. The testing results are
summarized in the Appendix.
Based on our field exploration results, most of borings encountered clayey sand and sandy
clay in the top 3 feet of the subsurface profile. The on-site soils became more clayey
towards the southern and western portions of the site. The soils within those portions of the
site should not be used as structural fill material within the building and pavement areas
due to their high clay content. However, these soils may be used in areas to be
landscaped.
Soil Testing Borings
Boring locations and sample depths were also selected by the client. The soil test
borings were drilled with an ATV-mounted rotary drill rig using hollow stem auger drilling
procedures to advance the borehole. Representative samples were obtained using
split-barrel sampling procedures. In the split-barrel sampling procedure, a standard
2-inch O.D. split-barrel sampling spoon is driven into the ground with a 940-pound
FIGURES

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72075094
BORING LOCATION DIAGRAM
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PERMEABILITY TEST RESULTS
PERMEABILITY TEST REPORT
TEST DATA: SAMPLE DATA:
Specimen Height (cm): 10.15 Sample Identification: HA-44
Specimen Diameter (cm): 7.27 Sampled at 5 ft
Dry Unit Weight (pcf): 107.0 Visual Description: Dark Gry Brown Slightly
Moisture Before Test (i): 14.7 Clayey Silty Fine to Medium Sand
Moisture After Test (7.): 17.3 Remarks: ASTM D 5084
Run Number: 1 a 2 i
Cell Pressure (psi): 47.0 Maximum Dry Density (pcf):
Test Pressure(psi): 41.9 Optimum Moisture Content
Back Pressure(psi): 40.0
Diff. Head (psi): 1.9 Percent Compaction:
Flow Pate (cc/sec):2.19 x 10--2 Permeometer type: Flexible Wal I
Perm. (cm/sec) : 3.57 x to--5 Sample type: Remolded
TIME - t (sec)
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AVERAGE HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Audubon Villages Project No.: 72075094
Location: Beaufort, NC File No.:
Date: 12-7-2007 Lab No.:
Tested by: LW
PERMEABILITY TEST REPORT
Checked by: CFB
TERRACON CONSULTANTS, INC. Test : CH - Constant head
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APPENDIX D - Historical Aerials & NWI Wetland Maps
AUDUBON VILLAGES
CARTERET COUNTY, NC
DATE: January 26, 2008
DESCRIPTION: 1953 aerial 1
AUDUBON VILLAGES
CARTERET COUNTY, NC
DATE: January 26, 2008
DESCRIPTION: 1958 aerial

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AUDUBON VILLAGES
CARTERET COUNTY, NC
DATE: January 26, 2008
DESCRIPTION: 1964 aerial

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AUDUBON VILLAGES
CARTERET COUNTY. NC
DATE: January 26, 2008
DESCRIPTION: 1971 aerial
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CARTERET COUNTY. NC
DATE: January 26, 2008
DESCRIPTION: 1980 aerial
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APPENDIX E - SITE PHOTOGRAPHS
AUDUBON VILLAGES
CARTERET COUNTY, NC
DATE: April 18, 2008 KELLER ENVIRONMENTAL PROJECT NUMBER: 0669
SITE LOCATION: Harkers Island Road
- - -- - -
PHOTOGRAPH NUMBER:
#
41
1 F

e

COMMENTS:

Northern view of Tract 2 and
Harkers Island Road below
_
-
a
r
south property line. View of
highway businesses,
including Outer Banks Boat

Harbor Retailer & Repair
Shop to left. Isolated pine
tree area at rear center is
Parker Tract
.

PHOTOGRAPH NUMBER:
2
?
t

COMMENTS:

Northern view of Tract 2 and
from southeast property

corner
.

AUDUBON VILLAGES
CARTERET COUNTY, NC
DATE: April 18, 2008 KELLER ENVIRONMENTAL PROJECT NUMBER: 0669
SITE LOCATION: Harkers Island Road
PHOTOGRAPH NUMBER: F777777777
=

3

COMMENTS:

?
Northwest view of Tract 2 ;
from Harkers Island Road

near proposed Access Road
2. Tall Pines in right side of
photograph is southwest
corner of Parker Tract. Tall
Hardwoods in rear are
located along west property
line.
PHOTOGRAPH NUMBER: ;

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COMMENTS:

t
S
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ou
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v
ew o
Tract 2
from Harkers Island Road

near proposed Access Road
_4W
2. Buildings seen in left side
of photograph are located
behind Outer Banks Boat
Harbor.
AUDUBON VILLAGES
CARTERET COUNTY, NC
DATE: April 18, 2008 KELLER ENVIRONMENTAL PROJECT NUMBER: 0669
SITE LOCATION: Harkers Island Road

PHOTOGRAPH NUMBER:
5 r

COMMENTS
:

Southern view of Island Road

Southern Baptist Church, _
Harkers Island Road
Tract 2 -
,
north property area
and . _
, 7
Parker Tracte ..?` ,

_ _?.-.jinn q.¢w R
a

PHOTOGRAPH NUMBER:

6

COMMENTS:

Northwest view of Tract 1
from east property line behind

Island Road Southern Baptist ,
Church. Goose Bay Mobile
Home Park is visible at rear -
center of photograph. -x `'
Appendix F - Site Plans
Existing Conditions Site Plan
Commercial Site Plan
Overall Site Plan
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Appendix H - Wetland Mitigation
NCEEP Mitigation Acceptance Letter
IF tem
Jll ff
al % nient
PROGRAM
March 25, 2008
Audubon Village, LLC
4628 N. Croatan Hwy
Kitty Hawk, NC 27949 Expiration of Acceptance: September 25, 2008
Project: Audubon Villages County: Carteret
The purpose of this letter is to notify you that the North Carolina Ecosystem Enhancement Program (NCEEP) is willing to
accept payment for impacts associated with the above referenced project. Please note that this decision does not assure that
the payment will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility of the
applicant to contact these agencies to determine if payment to the NCEEP will be approved.
This acceptance is valid for six months from the date of this letter and is not transferable. If we have not received a copy of
the issued 404 Permit/401 Certification/CAMA permit within this time frame, this acceptance will expire. It is the
applicant's responsibility to send copies of the permits to NCEEP. Once NCEEP receives a copy of the permit(s) an invoice
will be issued based on the required mitigation in that permit and payment must be made prior to conducting the authorized
work- The amount of the In Lieu Fee to be paid to NCEEP by an applicant is calculated based upon the Fee Schedule and
policies listed at www.nceep.net.
Based on the information supplied by you the impacts that may require compensatory mitigation are summarized in the
fol lowine table.
White Oak
03020106 Stream (feet) Wetlands (acres) Buffer I
(Sq. Ft.) Suffer II
(Sq. Ft.)
Cold Cool Warm Riparian Non-Riparian- Coastal Marsh
Impacts 0 0 0 0 5.47 0 0 0
Credits 0 0 0 0 5.47 0 0 0
Upon receipt of payment, EEP will take responsibility for providing the compensatory mitigation. If the regulatory agencies
require mitigation credits greater than indicated above, and the applicant wants NCEEP to be responsible for the additional
mitigation, the applicant will need to submit a mitigation request to NCEEP for approval prior to permit issuance. The
mitigation will be performed in accordance with the Memorandum of Understanding between the N. C. Department of
Environment and Natural Resources and the U. S. Army Corps of Engineers dated November 4, 1998.
If you have any questions or need additional information, please contact Valerie Mitchener at [phone].
Sincerely,
Willi . Gilmore, PE
Director
cc: Cyndi Karoly, NCDWQ Wetlands/401 Unit
Mickey Sugg, USACE-Wilmington
Joanne Steenhouis, NCDWQ-Wilmington
Gavin Davis, agent
File
P;PMriff ... Cur Stag
North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 /www.nceep.net
Appendix I - Adjacent Property Owners
Map & Property Information
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