20072046 Ver 1_More Info Received_20081021

ALMG
LAND MANAGEMENT GROUP INC.
'9W Environmental Consultants
October 16, 2008
TO: Ms. Kim Garvey
U. S. Army Corps of Engineers
P.O. Box 1890
Wilmington, NC 28402
RE: Changes to Proposed Mitigation
Brunswick Forest Subdivision; Brunswick County, NC.
Action 1D# SAW-2007-530
Dear Kim:
0'1- 204 Lo
R ?@Wec 0
OCT 21 2008
DENR - WATER QUALITY
VYETLANDS AND STORMMATER BRANCH
After recent discussions with the applicant and engineer, we request a few changes to the
proposed mitigation plan for Brunswick Forest.
1. Restoration: It was recently discovered that the area LMG identified for wetland restoration had
already been land planned to contain lots. To avoid altering the site plan further, we have identified
a new restoration area that is larger than the previous one. Like the previous restoration area, a ditch
will be filled to restore wetland hydrology. The revised mitigation plan is enclosed.
2. Preservation: The wetland preservation map has been revised to include 8.99 acres of wetlands
located in golf course maintenance areas. Vegetation maintenance will be permitted in these areas to
allow site visibility to golfers playing across greens.
The revisions to restoration, enhancement, and preservation acreages are listed in the table below.
Mitigation Types Original Proposal Revised Proposal Difference
Wetland Restoration (ac) 1.27 2.14 +0.87
Wetland Enhancement (ac) 2.44 1.53 -0.91
Wetland Preservation (ac) 122.90 126.72* +3.82
Upland Preservation (ac) 10.36 11.01 +0.65
Stream Preservation (LF) 777 777 -
I Includes 8.99 acres located within the golt course maintenance area.
www.lmgroup.net - [e-mail] - Phone: [phone] - Fax: [phone]
3805 Wrightsville Ave., Suite 15, Wilmington, NC 28403 9 P.O. Box 2522, Wilmington, NC 28402
Iq
Enclosed are the revised site plan, preservation map, and mitigation plan. Mr. Joe Taylor, the
applicant's attorney, is completing the draft restrictive covenants and will submit this document
shortly. Please contact me if you have any additional questions. Thank you for your assistance with
this project.
Sincerely,
Kim Williams
Wetland Scientist
Encl.
C: Mr. Jeff Earp, Funston Land and Timber, LLC
Mr. Greg Wayne, Hanover Design
Mr. Joe Taylor, Murchison, Taylor, and Gibson
Mr. Chad Coburn, DWQ
Mr. Ian McMillan, DWQ
2
Brunswick Forest Subdivision; Phases 3 and 5
Mitigation Plan
Brunswick County, North Carolina
Prepared by:
Land Management Group, Inc.
Wilmington, NC
Prepared for:
Funston Land and Timber, LLC
Leland, NC
October 2008
Table of Contents
List of Figures .......................................................................................................................... ii
1.0 Introduction .............................................................................................................................3
2.0 Site Description .......................................................................................................................3
2.1 Wetlands ............................................................................................................................. 3
2.2 Soils .................................................................................................................................... 4
2.3 Vegetation ........................................................................................................................... 4
3.0 Mitigation ................................................................................................................................. 4
3.1 Wetland Restoration ........................................................................................................... 4
3.2 Wetland Enhancement ........................................................................................................ 5
3.3 Wetland Preservation ......................................................................................................... 5
4.0 Monitoring ...............................................................................................................................5
5.0 Implementation Schedule .......................................................................................................6
6.0 Summary ..................................................................................................................................6
i
List of Figures
Figure 1. Vicinity map ..............................................................................................................7
Figure 2. Topographic map ......................................................................................................8
Figure 3. Soils map ...................................................................................................................9
Figure 4. Aerial photograph ....................................................................................................10
Figure 5. Site plan showing proposed wetland impacts and mitigation .................................11
Figure 6. Wetland restoration and enhancement ...................................................................12
I
1.0 Introduction
In order to mitigate for impacts to 0.328 acres of 404 wetlands and Waters of the U.S. and 262
linear feet of stream within Phases 3 and 5 of the Brunswick Forest Subdivision in Leland, North Carolina,
Funston Land and Timber, LLC agrees to restore, enhance, and preserve wetlands on site and buy into the
Ecosystem Enhancement Program (EEP). This tract is approximately 4290 acres in size and is located off
of Highway 17 in Brunswick County, NC (Figure 1).
2.0 Site Description
2.1 Wetlands
Staff of Land Management Group, Inc. delineated the entire tract in 2001 and Mr. Allen
Davis of the US Army Corps of Engineers (ACOE) signed the wetland survey on 9/10/2001 (for IP
Realty Corporation Brunswick Forest). This jurisdictional determination has since expired and the
delineation was revised in areas. LMG submitted a revised wetland survey and supporting
hydrology data to Ms. Jennifer Frye of the ACOE. Staff of LMG met with Ms. Frye on February
20, 2008 to review the wetlands in Phases 3 and 5 and she verbally approved the revised wetland
line. Copies of the wetland survey have been submitted to her for final sign off.
The site contains approximately 1200 acres of 404 wetlands. Several blue-line streams run
through the property: Mallory Creek, an unnamed tributary (UT) of Mallory Creek, and a UT of
Piney Branch extend into the eastern part of the site (Figure 2). Another UT of Mallory Creek
forms part of the eastern property boundary. Goodland Branch and two UT's of Morgan Branch
extend into the western part of the site. Goodland Branch flows into Town Creek, which forms part
of the southern boundary of the tract. Finally, Little Mallory Creek forms another section of the
southern property boundary. All named streams are classified as C; Swamp Waters by the Division
of Water Quality.
Please note that the proposed restoration area was delineated as wetlands in 2001.
Hydrology data collected from automated monitoring wells in 2006 and 2007 determined that the
3
ditch running through this area had effectively drained the soils so that they did not support wetland
hydrology. Therefore, it was not classified as wetlands in the reevaluation. This determination was
approved by the U.S. Army Corps of Engineers in February of 2008.
2.2 Soils
According to the Brunswick County Generalized Soil Survey, a majority of the uplands
within the site are classified as Baymeade fine sand, Foreston loamy fine sand, Goldsboro fine
sandy loam, Leon fine sand, and Newhan fine sand (Figure 3). Wetlands within the site are shown
mostly as Dorovan muck, Muckalee loam, Murville fine sand, Pantego mucky loam, and Torhunta
mucky fine sandy loam.
2.3 Vegetation
Pond pine (P. serotina), red maple (Ater rubrum), black gum (Nyssa sylvatica), titi (Cyrilla
racemiflora), and fetterbush (Lyonia lucida) are the dominant plant species that exist in the
wetlands on this property (Figure 4). Undeveloped uplands support loblolly pine (Pinus taeda),
sweetgum (Liquidambar styraciflua), red maple, and wax myrtle (Myrica cerifera).
3.0 Mitigation
3.1 Wetland Restoration
A total of 2.14 acres of uplands will be restored to wetlands by filling approximately 500
linear feet of a ditch (Figures 5 and 6). Material used to fill the ditch will be taken from upland
areas within the site. The section of ditch to be filled is located in the middle of a longer ditch
system that carries water across the site. In order to avoid any substantial flooding from only filling
a section of the ditch, water coming from outside of the restoration area will be piped underground.
This is not anticipated to negatively affect the restoration of hydrology within the restoration site
since precipitation and groundwater in the immediate vicinity will be retained. The proposed
restoration area is already vegetated with wetland species such as black gum and red maple.
Therefore, no wetland planting will occur. Two automated groundwater monitoring wells will be
4
installed within this area to measure water levels on a daily basis.
In addition to the on-site restoration, the applicant will also buy into the Ecosystem
Enhancement Program for the restoration of 262 linear feet of stream located elsewhere within the
Lower Cape Fear Watershed.
3.2 Wetland Enhancement
A total of 1.53 acres of wetlands located adjacent to the ditch that the applicant proposes to
fill will be enhanced. Data collected from automated monitoring wells indicate that this area still
technically meets wetland hydrology parameters. However, the water levels in this area are
somewhat suppressed by the ditch. Filling the ditch will improve the wetland hydrology in this
region. Two monitoring wells will be installed in the area to document changes in water levels.
3.3 Wetland Preservation
The applicant will preserve a total of 126.72 acres of wetlands, 777 linear feet of stream,
and 11.01 acres of uplands within Brunswick Forest using restrictive covenants. Of the wetlands to
be preserved, 8.99 acres are located within the golf course maintenance area. The vegetation within
these areas will be maintained in order to allow visibility to golfers playing across holes.
4.0 Monitoring
A general site analysis will occur directly after mitigation activities have been completed and will
consist of performing an `as-built' survey and taking photographs of the site to evaluate initial success. A
small narrative will be written and submitted to the Corps and to DWQ. From then on, monitoring will
occur annually for five years or until agencies determine the site to be successful.
Hydrology will be measured by installing two automated wells in the restoration area, two wells
within the enhancement area, and one well in a reference wetland. The goal of the hydrological success
criterion is the establishment of a groundwater table at or above 12" from the soil surface for either 12% of
the growing season (March 7 - November 28) during periods of nonnal precipitation or at least as long as
that of the reference wetland.
5
Since no vegetation will be planted in the mitigation site, no vegetation sampling will occur.
However, photographs will be taken of the existing vegetation to ensure its continued health. A monitoring
report that summarizes these results and includes photographs of the restored area will be submitted to the
Corps and to DWQ.
5.0 Implementation Schedule
Wetland mitigation activities will commence as soon as all necessary permits have been obtained.
6.0 Summary
In order to mitigate for wetland impacts associated with development of Phases 3 and 5 within the
Brunswick Forest Subdivision, the applicant will restore 2.14 acres and enhance 1.53 acres of wetlands
within the site. In addition, the applicant will preserve approximately 126.72 acres of wetlands, 11.01 acres
of uplands, and 777 linear feet of stream within the site. Finally, the applicant will buy into the NC EEP to
mitigate for proposed stream impacts. These mitigation actions will commence prior to construction within
jurisdictional areas. This proposed mitigation plan will compensate for permitted wetland and stream
impacts and fulfill the requirements of the U.S. Army Corps of Engineers and the NC Division of Water
Quality.
6
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