20011206 Ver 1_Complete File_20020109

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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D.
Acting Director
Division of Water Quality
January 9, 2002
Elizabeth Rooks
Research Triangle Foundation
PO Box 12255
Research Triangle Park, NC 27709
RE: Certification Pursuant to Section 401 of the Federal Clean Water Act,
Proposed Lake construction on Kit Creek
WQC Project# 01-1206 COE# 200120933
Wake County
Dear MS. Rooks:
Attached hereto is a copy of Certification No. 3340 issued to the Research Triangle Foundation dated January 9, 2002.
If we can be of further assistance, do not hesitate to contact us.
Sincerely,
Thorpe, Ph.D.
hector
Cc: Raleigh Corps of Engineers
Raleigh DWQ
File Copy
Central Files
Kevin Martin
Wetlands/401 Unit 1650 Mail Service Center Pajeigh, NC 27699-1650 Ph: [phone] Fax: [phone]
ASM
N Et$t
Customer Service
1 800 623-7748
O?O? wAT ?RQG
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Michael F. Easley
Governor
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
November 6, 2001
DWQ# 01-1206
Wake County
Elizabeth Rooks
Research Triangle Foundation of NC
Post Office Box 12255
Research Triangle Park, NC, 27709
131 Ocean Blvd. West
Holden Beach, NC, 28462
APPROVAL of 401 Water Quality Certification
Dear Ms. Rooks:
You have our approval, in accordance with the attached conditions, to implement the Mt. Vernon Springs Mitigation
Site Plan associated with Research Triangle Parkin Wake County, as described in your revised application received by the
Division of Water Quality on September 28, 2001. After reviewing your application, we have determined that this work is
covered- by General Water Quality Certification Number 3256, which can be viewed on our web site at
hfp://h2o.enr.state.nc.us/ncwetlands . This Certification allows you to use Nationwide Permit Number 27 when it is issued
by the U.S. Army Corps of Engineers. 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 and Water Supply
Watershed regulations. Also this approval will expire when the accompanying 404 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 as well as the additional condition described below:
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 which conforms to
Chapter 150B of the North Carolina General Statutes to the Office of Administrative Hearings, P.O. Box 27447, Raleigh,
N.C. 27611-7447. 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 Steve Mitchell in our Raleigh Regional Office at 919-571-4700 or Cyndi Karoly in Raleigh
- at 919-733-9721:
Attachment
cc: Corps of Engineers Raleigh Field Office
Raleigh DWQ Regional Office
Central Files
File Copy
Peter Jelenevsky,11010 Raven Ridge Road, Raleigh, NC, 27614
011206
North Carolina Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mal Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Cral*ee Blvd., Raleigh, NC 27604-2260 (Location)
n+n 700 4' 00 /.+L.--- % non 700 00e" /A...\ La....?n.n.........a..?........../.........N.....i..l
DEPARTMENT OF THE ARMY
WILMINGTON DISTRICT, CORPS OF ENGINEERS
P.O. BOX 1890
WILMINGTON, NORTH CAROLINA 28402-1890
IN REPLY REFER TO
Regulatory Division
Action ID No. 200021487
Mr. Kerr T. Stevens, Director
Division of Water Quality
North Carolina Department of
Environment and Natural Resources
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
November 7, 2000
REGEIVE?
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pOV 9
NC W ??T10N
RES
Dear Mr. Stevens:
This correspondence is in reference to the proposed Mount Vernon Springs Wetland
Mitigation Bank located north of SR 1134, adjacent to an unnamed tributary of Tick Creek, 4.5
miles south of Siler City, in Chatham County, North Carolina. Mr. Mike Ortosky, the project
consultant, provided a copy of the prospectus for this proposed bank to you on November 3,
2000. The purpose of this correspondence is to confirm the establishment of the Mitigation Bank
review Team (MBRT) for this project.
Pursuant to 60 FR Part 228, page 58610, "Agency Roles and Coordination," the signatory
agencies to the banking instrument will comprise the MBRT. Representatives of the U.S. Army
Corps of Engineers, U.S. Environmental Protection Agency, U.S. Fish and Wildlife Service,
National Marine Fisheries Service, and the Natural Resources Conservation Service, as
appropriate given the projected use of the bank, should typically comprise the MBRT. In
addition, representatives from state, tribal and local regulatory and resource agencies should
participate where those agencies have authorities and/or mandates directly affecting or affected
by the establishment, use or operation of a bank. This may include the North Carolina Division
of Water Quality, Division of Coastal Management, Wildlife Resources Commission, and
Division of Marine Fisheries. The MBRT will review and reach consensus on the banking
instrument and final plans for the restoration, creation, enhancement, and/or preservation of
wetlands and other aquatic resources.
Your agency is hereby invited to participate as a member of the MBRT for this mitigation
bank. Should you wish to participate, you should designate a specific representative of your
agency to serve on the MBRT and notify us in writing within 10 days of your receipt of this
letter. The first meeting of the MBRT has been set for November 28, 2000, at 1:30 p.m., in the
Raleigh Regulatory Field Office.
Thank you for your time and cooperation. If you have any questions, please contact me at
the Raleigh Field Office, Regulatory Division, telephone [phone], extension 22.
Sincerely,
S. Kenneth Jolly
Chief, Raleigh Regulatory
Field Office
Copies Furnished:
Mr. Jeff Jurek
North Carolina Department of
Environment and Natural Resources
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Mr. Mike Ortosky
Soil and Environmental Consultants
11010 Raven Ridge Road
Raleigh, North Carolina 27614
4 055'?7
Soil & Environmental Consultants, Inc.
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] Fax: [phone]
Web Page: www.SandEC.com
Transmittal Letter
6-23-00
To: Potential Mitigation Banking Review Team Members
From: Mike Ortosky
Re: Mount Vernon Springs Wetland Mitigation Bank
RECEIVED
JUL 3 ?npp
WATER QWITY MT* N
Brat.
ff 7
Enclosed please find a Prospectus for the Proposed Mitigation Bank. I would very ueh
your review of this information and any comments you may have. The owner is inthest
pursuing this effort and we would like to arrange for a site visit for the MBRT members.
If you can serve on the MBRT and are interested in attending the site visit, please let me know of
potential dates that you or your designated staff member may have. I will call each of you to
coordinate this visit.
Potential MBRT:

?\I
Coordin C, Inc. 919-846-5900
Q?
We are excited about the potential of this particular site, especially the stream restoration
possibilities. I appreciate your time and consideration in this, effort and look forward to speaking to
eachn of you.
USACOE
Attn: Ken jolly
6508 Falls of the Neuse Road
Suite 120
Raleigh, NC 27615
876-8441(#22)
USF&W
Attn: Garland Pardue
PO Box 33726
Raleigh, NC 27636-3726
8564520 (#11)
NCDENR-DWQ
Attn: Dennis Ramsey
1617 Mail Service Center
Raleigh, NC 27699-1617
733-7015
I
I.W
U
W
NCWRC
Attn: Frank McBride
1721 Mail Service Center
Raleigh, NC 27699-1721
733-3633 #283

c? Z USEPA
Attn: Kathy Matthews
Wetland Section
?y 61 Forsyth Street
Atlanta, GA 30303
Z W. 404-562-9373

USDA-NRCS
Attn: Mary Combs
4405 Bland Road - Suite 205
Raleigh, NC 27609 873-2100
Wetland Delineation/Pennitting/Mitigation Soil/Site Evaluations On-Site Septic Systems Environmental Assessments/Audits
Neuse Basin and Watershed Buffer Evaluations Groundwater Hydrology Endangered Species
Charlotte Office: [phone] • Hickory Office: [phone]
INITED STATES ENVIRONMENTAL PROTECTION AGENCY
REGION 4
Sam Nunn Atlanta Federal Center
61 Forsyth Street, S.W.
Atlanta, Georgia 30303 - 8960
" 0.2 100
Jolly, Chief
Iory Field Office
istrict, Corps of Engineers
the Neuse Road, Suite 120
th Carolina 27615
Vernon Springs Wetland Mitigation Bank; June 2000 Prospectus
olly:
his is in response to the transmittal letter from Soil & Environmental Consultants, Inc.
dated June 23, 2000, which enclosed the prospectus for the Mt. Vernon Springs
d Mitigation Bank. The U.S. Environmental Protection Agency, Region 4 Wetlands
(EPA) has reviewed the prospectus. We note that we believe that the stream restoration
and wetland restoration portions of the project appear to have merit. However, we are typically
concerned with the potential risk of failure associated with wetlands creation, particularly
creation of forested wetlands. Since the creation of wetlands on this site forms a majority of the
proposed work, we are interested in receiving much more detail on the specific design and
contingency plans. Our comments are listed below.
There are editorial and spelling errors, too numerous to mention specifically, which need
to be corrected. For example, under Soil Characteristics, the prospectus states that "this
is the largest single tract of hydric soils in Surry County," but the site is located in
Chatham County.
2. Information which we expect to be provided in a future proposal:
a. Much more detail in the discussions of earthwork and plantings to be carried out,
including contours, locations, water table depth or hydroperiod, and plant species
(including details on the expected hydroperiod of the "vernal pool type system");
b. Location and detailed description of possible reference wetland sites and reference
stream reaches, including soil, hydrology, and vegetation;
C. Details concerning the proposed stream morphology, and the planting and
construction techniques; IP En
REC
OCj 6 2000
tic WERANDS
F,ESTp .T?1JM

2
d. Details concerning the vegetation monitoring of both the wetland creation and
restoration areas, and the stream banks.
e. Details concerning success criteria to be met, and contingency plans.
3. We note that the prospectus discusses the use of a reference reach to assist in the design
of the stream restoration portion of this project. EPA strongly recommends that the
sponsor also identify and utilize at least one reference wetland for comparison purposes
during the planning, construction, and monitoring phases. As the MBRT is aware,
reference sites are useful in determining success or progress in a mitigation area,
especially daring atypical years (such as drought or high water years). The reference
site(s) should be identified and described in detail in the mitigation plan. Further, the
MBRT should be provided the opportunity to conduct a site visit of the reference site(s)
and reference reach(es).
4. EPA recommends that the service area should be limited to the Rocky River hydrologic
unit (03030003), consistent with the agreement made by the MBRT agencies. The use of
the bank for projects outside of this 8-digit HUC unit may be made on a permit-by-permit
basis.
5. The total number of credits available in the bank should be consistent with the
agreements made by the MBRT agencies at our June 1, 2000 meeting. In addition, the
MBI should include the language proposed by David Lekson on page 2 of his letter to the
MBRT, dated June 27, 2000, concerning the debiting of credits for permits.
6. The credit release schedule should be revised to be consistent with the agreement made
by the MBRT agencies at our April 27, 1999 meeting:
Accomplishment
MBI signed
151 year success
2nd year success
3rd year success
41h year success
51" year success
MBRT final sign-off
Percent credit release (cumulative)
15
10(25)
10(35)
10(45)
15(60)
15(75)
25(100)
We note that it appears from the prospectus that the stream channel will be dug and
planted, but that the water will not be rerouted from the ditch until one year later. The sponsor
should be aware that the completion of construction and beginning of the five-year monitoring
period (for credit release purposes) does not begin until completion of all work.
7. EPA recommends that a third party, such as a land conservancy organization, be
identified as soon as possible to accept the final disposition of the property.
8. The sponsor should clarify why low berms are needed in the wetland restoration portions
of the project. I understand why such structures may be necessary in the creation areas,
but sites proposed for restoration should not need berms to retain water. The sponsor
should demonstrate the necessity and feasibility of berms in different sections of the
mitigation area. Any potential maintenance issues should be raised.
9. It is difficult to determine from the. Concept Plan (figure in color) which areas are
proposed for wetland creation. The figure should be revised to clearly delineate the
wetland creation areas.
10. Under "Phasing," the prospectus states that it is most efficient to do all construction at
once, however, it appears from earlier statements that the work will be done in phases (for
example, the stream will be restored and planted, but flow will not be returned for one
year). Please clarify.
11. Under "Monitoring," the prospectus does not include monitoring of planted vegetation. It
is imperative that vegetation monitoring be conducted, annually at a minimum. A
vegetation monitoring plan should be submitted for review by the MBRT. Minimally, the
plan should include representative sampling from each restoration/creation area.
12. Under "Monitoring," the prospectus should include a statement that the well data will be
corroborated by observations of a hand-dug hole at each quarterly visit.
13. The mitigation plan and mitigation banking instrument must include appropriate,
measurable success criteria for hydrology and vegetation. At a minimum, the wetland
restoration and creation areas must meet the criteria set for jurisdictional wetlands in the
Corps's 1987 wetland delineation manual.
We appreciate the opportunity to participate in this review process. Please contact Kathy
Matthews at [phone] with any further information, comments, or questions.
Sincere ,
William L. Cox, Chief
Wetlands Section
cE: Mike Ortosky, S&EC, Inc.
USFWS, Raleigh
NCWRC, Raleigh
WRP/NCDENR, Raleigh?
DWQ/NCDENR, Raleigh
Mount Vernon Sprints Wetland
Mitigation Bank
Prospectus
By
Soil & Environmental Consultants, Inc.
June 2000

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Mount Vernon Springs Wetland Mitigation Bank
Prospectus
A. Administrative Provisions
The Mount Vernon Springs Wetland Mitigation Bank is proposed as a Private-Commercial
Bank, which will be operated as a Debit Bank and will offer wetland and stream impact
credits. The property is currently under option for purchase by Mr. Louis Smith. The
boundaries of the proposed mitigation site are on the east side of the overall tract.
Mr. Smith will become owner of the property once the option is executed. Ownership will
remain with Mr. Smith, his heirs, or other appropriate mitigation bat k s onser during the
five-year monitoring and maintenance period at which time title or easem t may be
transferred to an acceptable land conservancy organization.
B. Technical Provisions v I
s
Location
The Smith Tract is located generally along the east side of an unnamed tributary of Tick
Creek (Index # 17043-13) which flows to the Rocky River in Chatham County, North
Carolina. The current water quality classification of the stream is Class C waters. Rocky
River is a tributary of the Deep River (USGS cataloging unit 03 30002), which flows to the
Cape Fear River. The site is approximately 4.5 miles of Siler Ci , North Carolina.
Land Use
The site consists of approximately 30 acres of open agriculture land that is currently being
used as pasture, supporting a cattle operation. The 30 acres is within a larger tract, which
is also used as pasture. The site was very likely under row crops at one time after it was
converted from woodland.
Geomorphic Position
The site occupies a broad flood plain and low fluvial terrace position of about 520'
elevation. Soil parent material is fine-textured alluvium deposited by the tributary to Tick
Creek. Elevation of the flood plain is abo t 3' - ' bove the base of the channel. The
stream channel, which flows through the s' e fro northwest to southeast, has been
channelized (straightened) over 3,450 of its length. Topography within the site is nearly
y,?` ,
level. The floodplain surface falls approximately 10' over 3,000 feet of distance (0.3%
slope). There are indications of old channel patterns and site disturbance from roads,
drainage efforts, and erosion. This results in local relief variations of up to 2.0'.
Soil Characteristics
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Soils on the site, although not mapped by USDA-MRCS as of this date, are most like the
soil series described in the following inventory:
Flood Plain
Congaree Series Y111-
Well-drained, fine-loamy, active,
thermic Typic Udifluvents
Chewacla Series Somewhat poorly drained, fine-
loamy, mixed, active, thermic
Fluvaquentic Dystrudepts
Wehadkee Series
Poorly drained, fine-loamy, mixed,
active, non-acid, thermic,
Fluvaquentic Endoaquepts
Terrace
State Series
Well drained, fine-loamy, mixed,
semiactive, thermic Typic Hapludults
Altavista Series Moderately well drained fine-loamy,
mixed, semi-active, thermic Aquic
Hapludults
1
The Wehadkee S s is a hydric soil, comprises about 5.2 acres of the site, and represents
the potential wetland restoration area. The dicated that, to their knowledge,
this is the largest single tract of hydric soil in Su nry. The Chewacla Series is
adjacent to the Wehadkee Series and represe po ential wetland creation area. The well-
drained Congaree Series has limited potential for w land creation due to the greater
depths to seasonal saturation. There is some eviden of past disturbance to the soils on
site from grading, drainage, and erosion.

Site Hydrology
The watershed area above the point`where the channel enters the culvert at the road
crossing on the south is about 2110 acres. Approximately 2/3 of the watershed is wooded.
The majority of the open land in the watershed is adjacent to the site. Surface drainage on
the site is toward the straightened channel, then southeast to Tick Creek. The straightened
channel was very likely moved from a more natural sinuous route through the site to its
present position along the west side of the site at the toe of the adjacent upland slope.
Runoff from areas east, north and west of the site and precipitation provide input to
groundwater on site. Ditches have been constructed across the site to facilitate the
movement of ground and surface water to the straightened channel. The result has been to
partially drain the Wehadkee soil area so that farming operations were feasible.
The project stream consists of approximately 3,170 linear feet of channel located within
the confines of a broad flat valley. This channel apparently was dredged and relocated
along the western edge of the valley floor, and a small ditch is also located along the
opposite side of the valley parallel to the eastern toe slope. Sporadically located along the
valley are numerous interconnected drainage ditches that have effectively drained portions
of the valley for livestock purposes. As a result of vegetation removal, impacts associated
with the current and past grazing practices, and the corresponding increase of flow
velocities associated with the channelization, bank erosion along the current stream reach is
prominent. The current channel is not stable and is currently eroding and widening. As a
result of the ongoing activities and past impacts, Pd form d;vercir-(r? sequences)
is limited. The channel has been classified as G4 transitioning to an F4 strea annel
type. The 4 denotes the substrate type, grave i is case. rr c anne
dimensions average approximately 10 wide and 1 to 2 feet deep. .711L <?
Vegetation
The main portion of the site is in pasture (fescue grass with some invasive species). The
channel banks are vegetated with trees and shrubs typical of bottomlands in the area
(sycamore, ash, maple, alder, willow, etc.). The site is primarily bounded by open pasture.
The northern portion is bounded by bottomland hardwood forest. Reestablishment of
bottomland hardwood vegetation on the site would create a contiguous, vegetated riparian
corridor from the upper reaches of the channel to the area south of the site.
Habitat
Existing site habitat is limited to; a) some minor cover areas along ditches for songbirds
and small rodents, b) some open land feeding (e.g. mourning dove, deer), and c) the
narrow, wooded riparian corridor along the site channel which varies from about 15' to
30' in width and provides limited corridor habitat for deer, raccoon, opossum, fox, and a
variety of birds, amphibians, and reptiles.
Except for the narrow riparian corridor, there is little diversity on site. Habitat patches do
not exist within the site, thus reducing the "edge effect". There is little connectivity within
the site or to adjacent areas.
There is tremendous opportunity to create a large riparian corridor and a more diverse
stream habitat as a result of the mitigation effort. By creating a stable, natural stream
channel with aquatic enhancements and providing a contiguous corridor of bottomland
hardwood vegetation both form and function of site habitat and function of off-site habitat
is enhanced. The exterior edge of the wooded riparian corridor will be varied in form and
vegetation type in order to create a pronounced "edge effect". The existing channel will be
sequentially blocked, resulting in a number of vernal pools with old-growth vegetation on
their perimeter.
Proposed Mitigation Types
The intent of the mitigation effort is to develop Piedmont swamp forest and bottomland
hardwood forest along a restored stream channel. This would be done by restoring
wetland hydrology to the hydric soil areas as well as developing wetland hydrology in the
near-hydric areas. There is some opportunity to create oxbow type shrub/marsh bogs
within the floodplain area of the restored stream. Wetland hydrology would be restored by
blocking the present drainage system and re-grading the surface as needed to return it to
near original topography. Wetland hydrology would be created by a combination of; 1)
blocking and diverting surface and subsurface flow, 2) lowering stream channel gradient,
and 3) grading f the soil surface in order to bring the seasonal saturation to within 1.0 feet
of the surface. N C N? A--\ 0?'?
There is tremendous potential to restore natural channel form and function to
approximately 3700' of stream by creating a new channel through the flood plain portion
of the site. The existing channelized portion of the stream will be abandoned by
sequentially blocking with earth fill. The new channel will have greater length and
sinuosity with a lower gradient and the cross-sectional area will replicate the nearby
7 reach.
The proposed stream relocation and restoration project will shift the channel to the east
and essentially centralizing the channel within the valley. The final relocation design and
procedures will utilize Rosgen techniques and terminology. The proposed relocation will
permit the space required to create a naturally meandering stream channel. Relocation will
also allow for the creation of a riffle-pool sequence. Creating a meandering channel will
conservatively increase total length of channel to approximately 3,700 feet, increasing total
length by approximately 600 feet.
Based on the 1-foot topographic map produced by Smith and Smith Surveyors, the
horizontal fall from the origin of the project stream to the terminus point at Mt. Vernon
Springs Road (SR 1134) is approximately 12 feet resulting in a valley slope of 0.004. The
elevation drops approximately 1 foot every 350 feet. Based on the valley slope and other
physical characteristics, the proposed restored stream reach will be an E4 or possibly a C4
type channel configuration as described in Applied River Morphology (Rosgen 1996). The
sinuosity will range from 1.2 to 1.5 and the channel substrate will consist, based on
preliminary field observations, of gravel and sand. Channel pattern, profile and channel
form/dimensions will be drastically modified from the existing channel and will include a
riffle/pool sequence. The relocated channel will result in the reduction of bank erosion and
subsequent sediment transport during peak flows, increase overall holding capacity, and
increase habitat diversity for aquatic species. In addition, because the channel invert will
more than likely be higher than the current channel invert, the width of the flood-prone
area and flooding durations should increase.
Following the acceptance of the proposed conceptual wetland/stream restoration plan, a
detailed analysis of the existing channel conditions in order to validate and determine the
cross-sectional area of the existing bankfull channel, bankfull discharge, and longitudinal
profile. A reference reach will also be located and surveyed in order to utilize as a
reference standard for the final stream design. Based on the stream data collected at the
reference reach, existing channel and the available local regional curve data that depicts
bankfull dimensions versus drainage areas for the piedmont province, a detailed stream
restoration plan will be developed. The final stream restoration plan will illustrate the
bankfull cross-sectional area, channel dimensions, pattern, and profile proposed for
construction on-site. This final plan will be developed and distributed to the appropriate
agency representatives for comment and approval prior to initiation.
The following table lists the proposed mitigation components:
Restoration 5.2 acres
Creation 22.9 acres
Enhancement 0.0 acres
Preservation 0.0 acres
Stream Restoration 3700 linear feet
Implementation Methods
Grading and Structural
L. , I ? ?O " ' _'rov_J)
Restoration of wetland hydrology to the hydric soil areas of the site will be accomplished
by reversing the effect of the existing drainage system. There are two outlets from the
ditch system to the site channel. Soil material from the site will be used to fill these ditches
in wetland restoration and creation areas in order to; 1) fill the ditch cross section and 2)
restore natural grade to areas adjacent to the ditch.
Creation of wetland hydrology will be accomplished by three methods. First will be the
development of detention structures (low berms) at appropriate places down slope from
the restoration and creation areas. Size and spacing of these structures will be determined
during the design development phase. Each will consist of earth fill removed from
the wetland creation portions of the site and will act to detain surface waters within the
creation areas. Secondly, portions of the site will be graded so that the surface will be
within 12 inches vertically of the seasonal saturation within the soil profiles on site.
Finally, the restoration of the stream channel will create wetland hydrology within the
areas adjacent to the channel (lower gradient and increased sinuosity reduce the drainage
effects of the channel).
The sequential filling of the existing channel will result in a chain of pools surrounded by
the existing bank vegetation. This will create a vernal pool type system along an existing
vegetative corridor. Certain areas (those upstream of the detention structures) within the
creation and restoration areas will be ponded for portions of the year, adding to the
diversity of the site. The seasonally ponded areas will not comprise more than 10% of the
site area.
Vegetation
The majority of the area will be planted with seedlings of bottomland hardwood species.
Areas around the seasonally ponded portions will be planted with shrub species (border)
and herbaceous material or seeded with wetland seed mix. The species list below describes
proposed typical species.
The restored stream channel will be planted with appropriate channel bank species and
allowed to stabilize for one growing season prior to initiating flow.
Once structural development and grading is complete, planting will begin during the next
appropriate planting season for each type of vegetation. Spring is preferred for the
herbaceous material, with fall as a second preference. For the shrub and tree species, fall is
preferred, with spring as an alternate.
Woody tree species will be planted on an 8' by 8' spacing. Woody shrub species will be
planted on a 6' by 6' spacing along with seeding of those areas to woody species.
Herbaceous species will be planted on a 3' by 3' spacing and/or that area will be seeded
with a wetland seed mix at 4 pounds per acre.
The following is a table of proposed species from which plant material will be selected:
Tree Species
Liriodendron tuli ifera Yellow-Poplar
Ulmus americana American Elm
Celtis laevi ata Sugar-Berry
Fraxinus erns lvanica Green Ash
uercus hellos Willow Oak
uercus ni ra Water Oak
Betula ni ra River Birch
Platanus occidentalis Sycamore
Acer ne ndo Box-elder
Po ulus hetero h la Swam Cottonwood
Shrub Species
Rhododendren maximum Rhododendron
Ce halanthus occidentalis Buttonbush
Alnus serrulata Smooth Alder
Salix discolor Puss Willow
Cornus amomum Silky Dogwood
Asimina triloba PawPaw
Salix sericea Silky Willow
Herbaceous Species
Carex s Sedges
uncus s p. Rushes
Sphagnum s p. Peat Moss
Osmunda cinnamomea Cinnamon Fern
Osmunda re alis Ro al Fern
Other herbaceous species as available.
Phasing
It is most efficient to do all construction (structural and grading) in a single phase since all
outlets and ditches need to be blocked to effectively restore the entire area. Also, the
material needed for the filling of ditches and dam construction will be obtained from the
graded areas in the creation portion.
The entire site should be planted in one operation so that desired habitat type may be
encouraged and invasive species are minimized.
Scheduling
Project Begins January, 2000
Detailed Site Survey (topography) February, 2000
Concept Plan and Prospectus June, 2000
Development of MBRT (preliminary) June, 2000
Site Meeting with Agencies July, 2000
Detailed Mitigation Plan September, 2000
Develop MBI February 2001
Plan Approval b USCOE/NCDW Aril 2001
Contractor Selection May 2001
Construction Be ins* August 2001
Grading and Structural Complete December 2001
Install Monitoring Devices/Monitoring Begins February 2002
Planting Begins March/December
2002
Planting Complete May 2002/ anuar 2003
Monitoring Phase 6/02 through 6/07
Construction Supervision will include:
1) Pre-construction/planting meeting with contractor.
2) Site supervision during installation.
3) Final inspection after all site work is complete, preparation of appropriate
completion of work statement, preparation of brief as-built report, sketch
plan, and documentary photos and submission of that report to the USACOE
and DWQ for review within 30 days of completion.
4) Flagging of the mitigation site limits in the field, delineating between different
treatment areas.
C. Operations Provisions ?',
Service Area /'? ? ??
The proposed service area would include the Haw, er ( 30 0Deep River
(03030002), and the er ape ar 0 i This covers 4750
. is area includes
square miles of the central Pie mo egion o a.0
municipalities such as Greensboro, Burlington, Chapel Hill, Sanford, and portions of
southeast Durham and the Research Triangle Park.
Wetland Types (debit)
The bank will supply credits for Piedmont Swamp Forest, Piedmont Bottomland Forest,
and Piedmont Riverine impacts. Wetland and stream impacts are common in this service
area relative to road building, large retail and industrial site development, and
watershed/water supply development. In particular, the 3700 feet of proposed stream
restoration will be in high demand for a number of road building efforts.
Monitoring
Initially, RDS monitoring wells will be installed throughout the contiguous restoration
areas to monitor ground water levels. Data will be downloaded at the quarterly site visits.
Any areas to be inundated, will be monitored with water depth indicators (graduated
poles). Data from the RDS wells will be downloaded periodically and depths of saturation
and inundation will be recorded during each quarterly visit.
At least quarterly, a site visit will be made by a Professional Soil Scientist or Biologist.
These quarterly visits will be made at the end of each season (around March 1, June 1,
September 1, and Dece er 1 . brie etter of observations and, if needed, documentary
photos will be submitte to NCDOT afteh quarterly visit.
The monitoring phase will begin at the start of?site preparation, be carried out by the
contractor, continue for five (5) years and will include:
1) Site inspection early in first growing season.
2) Site inspection at end of first growing season and preparation of a letter of
evaluation, documentary photos, and suggested treatment of any failed areas
submitted to USACOE and DWQ within 30 days of inspection.
3) Quarterly visual inspection of the site record elevation of inundation and
saturation with letter of evaluation submitted to USACOE and DWQ within
30 days of inspection. Documentary photos will be prepared annually at the
end of the growing season.
4) Monitoring present and future threats to the success of the plan, including
any degrading factors such as depredation, trespassing, vandalism, or plant
removal from destructive wildlife, domestic animals, and humans. If a
potentially project threatening problem is observed, a contingency plan to
rectify the problem will be submitted to the USACOE DWQ within 30 days
of detection.
Contingency Planning
Contingency plans will be developed as part of the preparation of the Mitigation Banking
Instrument. Financial assurance for construction, monitoring, and maintenance (for the
operational life of the bank) will be developed and offered by the sponsor if the site is
deemed to be worthy of pursuit upon initial review of the MBRT.
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Restoration 5.2 acres
Creation 22.9 acres
Enhancement 0.0 acres
Preservation 0.0 acres
Stream Restoration 3700 linear feet
Restored Wetland Area (0.88 ac.)
- regraded
GRAPHIC SCALE
" ` - drains blocked , = 250
- low berm
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Wetland Area
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- drains blocked
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- 3 1 70 linear feet
- linear "pools" will remain
with vegetation

250 25C sec
Drains to be filled
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Restored Stream Channel
natural channel design
3700 linear feet
adjacent flood zone to
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Mount Vernon 5prin63 5 Mltlgation)
Louis Smith, owner •/?
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Soil & Environmental Consultants, PA
11010 Raven Ridge Road - Raleigh, North Carolina 27614 - Phone: [phone] - Fax: [phone]
www.SandEC.com
OEC 2 0 2001
17 December 2001
Mr. Todd Tugwell Mr. John Domey
U.S. Army Corps of Engineers N.C. Division of Water Quality
6508 Falls of the Neuse Road, Suite 120 2321 Crabtree Blvd.
Raleigh, North Carolina 27615 Raleigh, North Carolina 27604
Re: Mt. Vernon Springs Mitigation Plan. Action ID # 200120436 & 200120437 and DWQ project #
01-0053.
Dear Mr. Tugwell and Mr. Dorney,
The purpose of this letter is to inform you of our client's intention to complete the Mt Vernon Springs
Mitigation Plan submitted for your review and subsequent approval in two distinct phases. In order for
Research Triangle Park to mitigate for proposed and permitted stream impacts associated with Louis
Stephens Drive and the South Loop Road project, approximately 1,200 linear feet of priority I stream
restoration will be performed within the M. Vernon Springs Mitigation site. As depicted on the attached
figure, Phase I will initiate at station 35+60.19 and will continue to the project terminus. Phase I will be
completed for the purpose of mitigating for 768 linear feet of stream impact as required by the US Army
Corps of Engineers (USACE) Action ID # 200120436 & 200120437, and the remainder of the Mitigation
Plan will be completed following the approval of the Individual Permit - Action ID # 200120933 that is
currently being reviewed by the EPA Phase H will encompass the remaining 3700 linear feet of stream
restoration and 7.5 acres of wetland restoration.
Although, current mitigation requirements are 768 linear feet of stream channel, in order to limit
modification to the existing restoration design and layout related to future restoration activities, it has been
determined that the minimum length to plausibly restore is approximately 1200 linear feet. The additional
footage of stream will be utilized for the pending IP or will be used for compensatory mitigation for
another project if acceptable to the USACE.
The stream restoration design parameters and wetland restoration plan will not be altered from the
originally submitted version, except for the temporary connection between the Phase I stream reach and the
existing charnel. Following the completion of Phase II and subsequent connection to Phase I, the
temporary connection will be abandoned and filled Wetland restoration work will not commence until the
entire stream restoration (Phase I and II) has been completed in order to maintain accessibility of the site by
heavy construction equipment.
If you have any questions or concerns regarding this project, please contact me at your convenience at 919-
846-5900 (office), 919-291-1075, or e-mail me at [e-mail].
Sincerely,
Soil & irvironmental Consultants, PA
Peter A. Je n
Project g
Attachments: Stream Restoration Phasing
Charlotte Office: Greensboro Office: Hickory Office:
urch oad
PMB 291, 3020-I Prospe 3817-E Lawndale Drive 910 Boston Road
L
Charlotte, NC 28269-719 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
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Environmental Consultants, PA
Road • Raleigh;,;North Carolina 27614 • Phone: [phone] • Fax: [phone]

Mr. Todd St. John
2321 Crabtree Blvd. -°
Raleigh, North Carolina 27604-2260
Re: Mt. Vernon Springs Mitigation Plan. DWQ Project No. 011206.
Dear Mr. St. John,
The proposed of this letter is to provide the additional information and supporting documentation as
requested in the letter received from your office on November 7, 2001, dated November 1, 2001. I have
attempted to answer or comment on the issues in order as presented in your letter.
1. In-Stream Structures and/or Blocks
The revised stream restoration plan view has been enclosed, which denotes the approximate
location of grade control and bank stabilization structures (i.e. rock vanes and root wads).
2. Site Plans/Maps
Bed features have been identified on the revised plan view.
The longitudinal?rofiles of the reference reach and the proposed design reach have also been
enclosed.
3. Riparian Buffers and Planting Plan
The riparian buffer will be planted with live transplants and the same bare-root species as
indicated in the mitigation plan under Section VIII Planting Plan G`A minimum o f.5 feet o p
etated riparian buffer will be established and monitored along the proposed stream restoration
corridor. And as with the we an r component the target east is
trees/acre.-
4. Morphological Measurements
Currently, there are 13 individual reference channel reaches utilized to create the North Carolina
Rural Piedmont Regional Curve. Of the 13 channels utilized to generate the Curve, 9 of the 13
channel reaches plot below the regression line. The purpose of the regional curve is as a technical
guide not as an absolute. The channel types (i.e. Rosgen Classification) and site conditions (i.e.
bed material, landscape position, runoff rates) differ for each of these reference reaches, resulting
in slightly varied cross-sectional area when compared to drainage area. The Regional Curve
exemplifies this fact because there are several examples of reference channels located within
larger watersheds with smaller cross-sectional areas as compared to reference channels located
within smaller watersheds (i.e. Dutchman Creek versus Mill Creek).
Realizing this discrepancy, I utilized data gathered during the existing conditions survey and relic
channel surveys to generate a cross-sectional area, which closely emulates current bankfull cross-
Charlotte Office: Greensboro Office: Hickory Office:
PMB 291; 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
19 December 2001 , , Mo 0 Z. 3M
sectional dimension. Subsequently, I utilized the reference reach data (Sal's Branch) primarily to
design a stable pattern and longitudinal profile via dimensionless ratios.
5. Permanent Easement
Research Triangle Foundation currently owns the property that the restoration work will be
completed within. This property was purchase for the sole purpose of providing mitigation credits
to off-set proposed impacts within the Research Triangle Park Deed re ctio s-hav6 been or
eventually be placed on the property to protect it in perpetuity.
6. Sediment Transport Analysis 1 ',4 C
The originally submitted morphological table contained the riffle pebble instead of the b
sample, the table has been corrected and is attached and subsequently the value to the
numbers used in the Entrainment Calculation. The slope value that is indicated within the
morphological table is the average slope based on the cumulative existing channel survey. The
slope utilized for the sediment transport analysis was the slope of the channel (water slope) of the
bar sample area.
The Entrainment Calculation indeed indicates that the channel is currently aggradmg, but it also
indicates that the required Bankfull Mean Depth Required to move the d50 is 1.48 feet. The
proposed design calls for an average riffle depth of approximately 1.60 feet as indicated on the
Typical Riffle Cross-Section profile sheet located in the attachments section of the mitigation
plan, therefore based on the entrainment calculation, the designed stream channel should be able to
move the d50 and not aggrade over time.
7. Reference Reach
To elaborate further on this issue ofutilizing Sal's Branch as a reference reach despite its drainage
area, this reference reach was only utilized to aid in the design of the pattern, and longitudinal
profile of the new channel via dimensionless ratios. The reference channel was not instrumental in
the proposed cross-sectional area design; in fact the proposed cross-sectional area is very similar
to existing channel cross-sectional area.
Reference Reaches located within larger drainage areas particularly within developing counties
and/or heavily manipulated landscapes as is typical with agricultural land, are extremely difficult
to identify. I spent extensive time searching within the vicinity of the project stream and could not
find any stable, unaltered stream reaches that would be considered reference reach quality.
Channel conditions appeared to be inversely proportionate to the drainage area (bad to worse).
Therefore, I believe that Sal's Branch, which is considered to be a stable reference reach, is an
adequate source of data that can be utilized in the development of dimensionless ratios m which
channel pattern and profile can be extrapolated and subsequently designed.
8. Physical Monitoring
The bi-annual (1 s`, 3'a, and 56 years) stream restoration monitoring reports will consist of the
information as recommended in the DWQ Stream Restoration/Mitigation Success Criteria.
Therefore, the monitoring reports will include the stream's current Dimension, Pattern, Profile,
and Pebble Count Data, along with photographs of each permanently established cross-sectional
profiles and several of the in-stream structures.
My only concern is the required 320 stems/acre after 5 years requirement because the U.S. Army
Corps only requires 320 stems/acre after 3 years and 266 stems/acre after 5 years. This allows for
a 10 percent mortality rate per year after year 3, which should be expected on a site that should
start to mature, resulting in natural tree mortality, resulting in fewer stems per acre.
If you have any further questions regarding this project or you would like to discuss the plan in more detail,
I can be reached at 919-846-5900 extension 21(office), 919-291-1075 (mobile), or email
[e-mail].
Sincerely,
Soil & Environmental Consultants, PA
4t
Peter A. Jelenevs
Project Manager
Enclosures: 1) Corrected Reference Reach & Design Summary Data Sheet
2) Sal's Branch Longitudinal Profile Data
3) Design Channel Longitudinal Profile
4) Plan View depicting Structure Placement
GRAPHIC SCALE
1 " = 250'
250 0 250 500
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PROPOSED STREAM RESTORATION ALIGNMENT
4703 LINEAR FEET
A INTERPIELD DITCHES
VERNAL POOLS
? STATION LOCATIONS
ROCK VANES
?j ROOT WADS

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RESEARCH TRIANGLE FOUNDATION i
STATION LOCATIONS MOUNT VERNON SPRINGS MITIGATION SITE 8u11 BnvleonmE Consultants. PA o ;
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Reference Reach and Design Summarv Data-Revised Nov 12, 2001
Sal's Branch, Umstead Park Mt. Vernon Springs Mt. Vernon Springs
Survey Crew Clinton et. al River Course Do1UJelenevsky Jelenevsky Jelenevsky
Survey Date 5/26/1998 10/11/2000 6/1/2001 February-June 2001 Jun-01
Parameter Reference Reference Reference Existing Stream Survey Proposed Design
Stream Type E E E incised E5/F E5/C5
Drainage Area (me) 0.2 0.2 0.35 2.6 2.6
Bankfull Width (Wbkf) 8.7 8.2 10.2 33 18
Bankfull Mean Depth (Dbkf) 1.2 1.2 1.3 1.2 1.65
Width/Depth Ratio 7.25 6.8 7.6 27.9 11
Max Riffle Depth Ratio (Dmax/Dbkf) 2 1.7 1.5 2.35 1.5
Max Riffle Depth 2.4 2.0 1.9 2.83 2.5
Bankfull Cross-Sectional Area (Abkf) 10.4 9.7 13.8 37.1 30
Bankfull mean velocity (Vbkf) 5.7 3.4 4
Bankfull Discharge (Qbkf) 55 126 120
Bankfull Maximum Depth (Dmax) 2.4 2 1.9 2.8 2.5
Width of Flood Prone Area (Wfpa) 163 100 100 300 300
Entrenchment Ratio (Wfpa/Wbkf) 18.7 12.2 9.8 6.3 16.7
Min Meander Length (Lm) 38.0 35.0 N/A 80
Max Meander Length (Lm) 45.0 135.0 43.0 N/A 160
Min Meander Length Ratio (Lm/Wbkf) 4.4 2.0 N/A 5
Max Meander Length Ratio (Lm/Wbkf) 5.2 16.5 4.2 N/A 10
Min Radius of Curvature (Re) 13 14 11 N/A 40
Max Radius of Curvature (Rc) 30 21 21 N/A 60
Min Radius of Curvature Ratio (Rc/Wbkf) 1.5 1.7 1 N/A 2.5
Max Radius of Curvature Ratio (Rc/Wbkf) 3.4 2.6 2 N/A 3.75
Min Belt Width (Wblt) 10 42 20 N/A 40
Max Belt Width (Wblt) 16 60 62 N/A 120
Min Meander Width Ratio (Wblt/Wbkf) 1.1 5.1 2.0 N/A 2.5
Max Meander Width Ratio (Wblt/Wbkf) 1.8 7.3 6.1 N/A 7.5
Sinuosity (K) 1.2 2.1 2 1.05 1.45-1.5
Valley Slope 0.012 0.010 0.006 0.004 0.004
Avg. Slope (Sval/K) 0.010 0.005 0.005 0.0026-0.005 0.003-0.004
Min Riffle Slope (Srif) 0.016 0.0103 0.008
Max Riffle Slope (Srif) 0.04 0.036 0.0711 0.015
Min Riffle Slope/Ave Slope (Sriff/Save) 3.0 2.06 2.8
Max Riffle Slope/Ave Slope (Sriff/Save) 4.2 6.9 14.22 5.2
Min Riffle Length Lriffle 2.5 3.0 10 20
Max Riffle Length Lriffle 20.5 28 48 50
Min Riffle Length/Bankfull Width (Lrif/Wbkf) 0.3 0.3 0.2 1.25
Max Riffle Length/Bankfull Width (Lrif/Wbkf) 2.4 2.7 1 3.1
Pool Slope (Spool) 0 0 0 0 0
Pool Slope Ratio (Spool/Savg) 0 0 0 0 0
Min Pool Depth (Dpool) 2.3 2.8 2.7
Max Pool Depth (Dpool) 3.1 2.6 3.26 3.6 4.0-4.2
Min Pool Depth Ratio (Dpool/Dbkf) 1.9 2.2 1.5
Max Pool Depth Ratio (Dpool/Dbkf) 2.6 2.2 2.5 3.6 2.5
Pool Area (Apool) 10.3 24.0 62.3 45-50
Pool Area Ratio (Apool/Abkf) 1.0 1.7 1.25 1.5
Min Pool Length (Lpool) 3.5 21 10 40
Max Pool Length (Lpool) 38 35 48 80
Min Pool Length Ratio (Lpool/Wbkf) 0.4 2.1 0.2 2
Max Pool Length Ratio (Lpool/Wbkf) 4.4 3.4 1.25 4
Pool Width (Wpool) 5.6 6.8 10.2 45.5 18
Pool Width Ratio (Wpool/Wbkf) 0.64 0.8 1 0.95 1
Min Pool/Pool Spacing (p-p) 35.5 51 95 80
Max Pool/Pool Spacing (p-p) 47 26 66 121 120
Min Pool Spacing Ratio (p-p/Wbkf) 4.1 5.0 1.9 4
Max Pool Spacing Ratio (p-p/Wbkf) 5.4 3.2 6.5 2.5 6
Materials:
1. Particle Size Distribution of Channel
d16 0.198 0.226 0.266
d35 1.1 1.66 1.66
d50 10 7.6 4 4
d84 30 28 12 12
d95 45 21 21
2. Particle Size Distribution of Bar
d16 1.85 0.354 0.354
d35 17.19 1.46 1.46
d50 23.7 2.5 2.5
d84 43 8 8
d95 83 13 13
Largest Size at Toe of Bar 95 18 18
ot- lao6
27 September 2001
JkOLA? Mg . \A'A11
W\?&
17,
Environmental Consultants, PA
Road • Raleigh, North Carolina 27614 • Phone: (919:),546-5900 • Fax: [phone]
Mr. Todd Tugwell
U.S. Army Corps of Engineers
6508 Falls of the Neuse Road, Suite 120
Raleigh, North Carolina 27615
Re: Mt. Vernon Springs Mitigation Site Plan.
Dear Mr. Tugwell and Mr. Dorney,

The Research Triangle Foundation proposes to restore approximately 4,700 linear feet of stream
channel, 7.5 acres of wetlands and create approximately 7.0 acres of wetlands for the purpose of
mitigating for proposed wetland and stream impacts within the Research Triangle Park, Durham
and Wake Counties, North Carolina. The mitigation site is referred to as the Mt. Vernon Springs
Mitigation Site. The restoration design, existing site conditions report and supporting exhibits and
documents are enclosed. The proposed mitigation site will be utilized to -se d and
stream impacts as described in the Individual Permit (IP), Action ID No 200120933, d issued
Nationwide Permit #14, Action ID No. 200120436 & 200120437; DWQ Pro' o. 01-0053.'
The IP is currently under agency and public review and has not been issued. -- - `
The Mt. Vernon Springs Mitigation Site currently contains approximately 3,300 linear feet of
incised and channelized perennial stream. The mitigation site is presently supporting a cattle
operation, which has exasperated the altered condition of the stream channel resulting in degraded
water quality, riparian function, and wildlife habitat (aquatic and terrestrial). The proposed
stream restoration design was developed utilizing existing channel conditions data, reference
stream channel data, and the Piedmont Regional Curve. The restoration design is based on
natural channel design principals and is considered to be a Priority I stream restoration. The
proposed stream restoration design will result in 4,700 linear feet channel restoration, which will
increase the length of the existing channel by approximately 1,400 linear feet.
Approximately 7.5 acres of hydric soils were delineation within the mitigation site and
approximately 7.0 acres of near-hydric soils were identified based on the soil borings performed
during the site analysis. The area that encompasses these two soil units has been historically
ditched, drained, deforested and converted to pasture dominated by fescue grass. The restoration
of these areas will consist of backfilling the existing ditches to grade and replanting the site with
bottomland hardwood plant species. These restoration and creation units will subsequently be
monitored with groundwater devices in order to determine saturation durations and depths.
All of the restoration components will be monitored for 5 years, and annual reports will be
provided to the DWQ and the USACE for review and comment. Monitoring components will
include the stream channel stability, instream grade control conditions, vegetation survival,
makeup, and density, groundwater, and macroinvertebrates.
IV emTdvl-
-3f -?Yft\Q-k

Charlotte Office: Greensboro Office: Hickory Office.
PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
SEP, 2 8
Mr. John Dorney
N.C. Division of Water Quality
2321 Crabtree Blvd.
Raleigh, North Carolina 27604
If you have any questions regarding the restoration plan or need additional information please call
me at 919-846-5900 (office), 919-291-1075 (mobile), or e-mail me at [e-mail].
Sincerely,
Soil & Environmental Consultants, PA
P? A-
Peter A. Jelenevs
Biologist/Project anager
Enclosures: Mt. Vernon Springs Mitigation Plan.
O?0 W AT ?RQG
C? rte..
o ?
November 1, 2001
Mr. Peter Jelenevsky
Soil and Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
Subject: Research Triangle Foundation
DWQ Project No. 011206
Wake County
Dear Mr. Jelenevsky:
The Wetlands Unit staff reviewed the stream work plans for the subject project and determined that additional information
is necessary to complete the technical review process. The required additional information is as follows:
1. In Stream Structures and/or Channel Blocks
The approximate location of all proposed in stream structures and channel blocks must be provided on the site
plans.
2. Site Plans/Maps
Please locate the stream features such as riffles, pools, runs and glides on the site plan.
Please provide longitudinal profiles for the reference reach and design reach that show the elevations of the
thalweg, water surface, bankfull, and lowest bank height.
Please provide of the reference reach and design reach. Please include the extent of the flood prone area on the
example cross sections.
3. Riparian Buffers and Planting Plan
The planting plan should include tree planting densities of the appropriate native species that will result in a survival
rate of 320 trees per acre after five years. Please revise the site plans to include the extent and nature of the
plantings and buffers as well as the extent of the easement or other means of permanent protection.
4. Morphological Measurements
As indicated in the narrative, the design channel is predicted to have a cross section and discharge below that of
the Rural Piedmant Regional Curve, whereas the cross section for the reference reach falls above that predicted by
the Regional Curve. Please provide an explanantion as to why this may be the case.
5. Permanent Easement
A permanent easement is required for stream mitigation projects. The easement must include permanent protection
of the streams and buffers. A sample easement can be found at hftr):Hh2o.ehnr.state.nc.us/ncwetlands/restore.htmi.
North Carolina 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)
919-733-1786 (phone), 919-733-6893 (fax), http://h2o.enr.state.nc.us/ncwetlands/
Page 2 of 2
6. Sediment Transport Analysis
The sediment transport analysis and the morphological measurments table indicate differing values for the d50,
ds50 and average channel slope. Please clarify. Additionally, the sediment transport validation appears to indicate
that the channel will aggrade. Please clarify how the design channel will transport the predicted bed load.
7. Reference Reach
The reference reach provided is a much smaller system than the design reach. Regional data for smaller systems
seem to have more scatter than do larger systems. Please explain why the reference reach provided is adequate.
8. Physical Monitoring
Please provide additional detail regarding the physical monitoring plan. It is recommended that the plan be based
on the Wetland Restoration Program's Draft Physical and Vegetation Monitoring Outline (Success Criteria) available
at http://h2o.ehnr.state.nc.us/ncwetlands/restore.html.
Division wetlands unit staff will strive to complete a final technical review within 10 working days of receipt of the
requested information unless a field review is required. If you have any questions or would like to discuss this project,
please contact me at [phone]. Also, please note that the NCDENR Stormwater Best Management Practices
Manual, April 1999, and other documents and information can be downloaded from the Wetlands Unit web site at
hftp://h2o.ehnr.state.nc.us/ncwetlands/restore.html.
Sincerely,
Todd St. John, PE
Environmental Engineer
cc: Raleigh Regional Office
Dave Penrose
File
MEMORANDUM
TO: John Dorney
Non-Discharge Branch
Regional Contact: _Steven Mitchell
WO Supervisor: Ken-Schuster
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name Research Triangle Foundation
Project Number 01 1206
Recvd From APP
Received Date 8/16/01 Recvd By Region
Project Type
County Wake
County2
Region Raleigh
Certificates Stream Stream Impacts (ft.)
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req. ME
F-IPF BLH O Y O N F_ 16-41-1-17 wsly NSW 30,605. 6.23 6,616.40
Mitigation Wetland
MitigationType Type Acres Feet
Is Wetland Rating Sheet Attached? 0 Y 0 N Did you request more info? 0 Y 0 N
Have Project Changes/Conditions Been Discussed With Applicant? 0 Y 0 N
Is Mitigation required? 0 Y 0 N Recommendation: 0 Issue 0 Issue/fond 0 Deny
Provided by Region: Latitude (ddmmss) 355123 Longitude (ddmmss) 785252
cc: Regional Office
Central Office Page Number 1
Comments:
_ISSUE if 5 to 1 mitigation fot Army Corps is met.
Research Triangle Foundation of North Carolina
/off
2 Hanes Drive
Post Office Box 12255
Research Triangle Park, North Carolina 27709
Telephone: [phone] FAX: [phone]
HAND-DELIVERED LETTER
Mr. John R. Dorney
Wetlands/401 Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Dear Mr. Dorney:
Elizabeth H. Rooks, vice President, Planning & Development
October 1, 2001

I received today your letter of September 18, 2001 concerning our application for
a 401 Certification for wetlands impacts associated with our proposed
construction of a lake in RTP (DWQ Project #011206).
It is my understanding from this letter that the additional information you
require concerns the status of the Lewis Smith mitigation site with respect to the
MBRT. I have confirmed with Kevin Martin of S&EC that, because this is a
dedicated site, there is no need for it to be reviewed by the MBRT. In addition,
Mr. Martin informed me that he hand-delivered the final design plans to your
office on September 28, 2001.
I hope that this information addresses your concerns and that your office will be
able to approve the 401 Certification. Please feel free to contact me if you have
any questions or if you need any additional information.
Sincerely,
Eliza`a eth H. Rooks
EHR/sgt
cc: Kevin Martin /
Soil & Environmental Consultants • • , 111111""M
Q1
TRIANWE P
DEVELOPERS OF THE RESEARCH TRIANGLE PARK
`O??F Vvnl?9??
vs ?.
> .i
rAicnaei r. tasiey, uovernor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D.
Acting Director
Division of Water Quality
September 18, 2001
DWQ Project # 011206
Wake County
CERTIFIED MAIL-RETURN RECEIPT REQUESTED
MS. Elizabeth Rooks
Research Triangle Foundation of NC
Post Office Box 12255
RTP, NC 27709
Dear Ms. Rooks:
The Division of Water Quality has reviewed your plans for the discharge of fill material or flooding 10,229 linear feet of streams
and 6.23 acres of wetlands located at South Parced Lake in RTP County for Wake. Insufficient evidence is present in our files to
conclude that your project must be built as planned in waters and/or wetlands in accordance with 15A NCAC 2H .0506. Therefore,
unless modifications of the proposal are made as described below, we will have to move toward denial of your 401 Certification as
required by 15A NCAC 2H .0507(e) and will place this project on hold as incomplete until we receive this additional information, we are
requesting (by copy of this letter) that the U.S. Army Corps of Engineers place your project on administrative hold.
Any documentation such as maps and narrative that you can supply to address alternative designs for your project may be
helpful in our review of your 401 Certification. This project will require compensatory mitigation as described in 15A NCAC 2H
.0506(h). Your mitigation proposal is insufficient because we have no details requiring the status of the Lewis Smith mitigation site with
respect to the MBRT.
Please respond within three weeks of the date of this letter by sending a copy of this information to me and one copy to
Raleigh Regional Office. If we do not hear from you in three weeks, we will assume that you no longer want to pursue this project and
we will consider the project as withdrawn. If you have any questions, please telephone John Dorney at 919-733-9646 or Steve Mitchell
at our Raleigh Regional Office at 919-571-4700.
Sincerely,
/
o
cc: Raleigh DWQ Regional Office
- _. Raleigh Field Office Corps of Engineers
Central Files
File Copy
Ron Ferrell, WRP
Kevin Martin; Soil & Environmental Consultants
Wetlands/401 Unit 1650 Mail Service Center Raleigh, NC 27699-1650 Ph: [phone] Fax: [phone]
MAX
MEN`
Customer Service
1 800 623-7748
Re: tracking notice, RRO, Sept 7, 2001
Subject: Re: tracking notice, RRO, Sept 7, 2001
Date: Mon, 10 Sep 200108:10:21 -0400
From: Steve Mitchell <[e-mail]>
To: Beth Barnes <[e-mail]>
Found it.
01-1206 ISSUE if 5 to 1 ratio is met for COE and/or WRP will accept
01-1105 ISSUE project neede to stabilize area behind WTP and lift
station
01-1238 ISSUE plans state a minimum of 50 feet from creeks.
01-1107 ISSUE if stormwater OK w/Todd
01-1140 HOLD plans indicate removal of pond. Did not evaluate for
NBR. Do not remember it being on ground either.
Beth Barnes wrote:
> Many thanks, and we will sentd 01-1140.

> Steve Mitchell wrote:

> > Do not have 01-1140 Will work on other this weekend.

> > Beth Barnes wrote:

> > > Hi, Mitchell:
> > > Whats new..... besides being very busy. Below is this week's
> > > Tracking Notices for the Raleigh Regional Office. The Central Office
> > > has not received your recommendations for this project as Sept 7,
> > > 2001. If you have not received the specified applicati on(s), please let
> > > me know; the application will be FAXED to you.

> > > TRACKING:
> > > DWQ NO. Project County Permit Type Received Expires
> > > 1. 011121 Durham NW12,14,39 7/20/01 9117101
> > > 2. 011140 Wake NBR 7/28/01 9125101
> > > 3. 011206 Wake IP 818101 1015101
> > > 4. 011238 wake NW 12? 8116101 10112101

> > > TARDY:
> > > 1. 011105 Edgecombe TPBR 7/17/01 9114101
> > > 2. 011107 Wake NW 12, 14, NBR 7119101 9114101

> > > Please use the stall recommendation sheet in Filemaker Pro.

> > > Thanks for your prompt attention.
> > > Beth Barnes
1 of 1 9/10/0111:05 AM
REPLY TO
ATTENTION OF
Regulatory Branch
Action ID No. 200120933
DEPARTMENT OF THE ARMY
WILMINGTON DISTRICT, CORPS OF ENGINEERS
P.O. BOX 1890
WILMINGTON, NORTH CAROLINA 28402-1890
August 6, 2001

Mr. John Dorney
North Carolina Department of Environment
and Natural Resources
Division of Water Quality
Wetland/401 Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Dear Mr. Dorney:
c It)
t 11 5 C
yy(q??o QQ ?n a
011246
Enclosed is the application submitted by the Research Triangle Foundation of North
Carolina, for Department of the Army authorization and a State Water Quality Certification to
authorize the proposed placement of fill material into 0.88 acre of wetlands and 1,074 linear feet
of stream channel, and to flood 5.35 acre of wetlands and 9,154 linear feet of stream channel,
along kit Creek and several of its unnamed tributaries, associated with construction of the South
Parcel Lake, in Research Triangle Park, Wake County, North Carolina.
We are considering authorizing the proposed activity pursuant to Section 404 of the Clean
Water Act, and we have determined that a water quality certification is required under the
provisions of Section 401 of the same law. A Department of the Army permit will not be granted
until the certification has been obtained or waived.
In accordance with our administrative regulations, in most cases, 60 days after receipt of a
request for certification is a reasonable time for State action. Therefore, if you have not acted on
the request, or asked for an extension of time, by October 5, 2001, the District Engineer will
deem that waiver has occurred.
0 c,
n?
Printed on ® Recycled Paper
•
A..
Questions or comments may be addressed to Mr. Todd Tugwell, Raleigh Field Office,
Regulatory Division, telephone [phone], extension 26.
Sincerely,
.CA
^. Kenneth Jolly
Chief, Raleigh Regulatory
Field Office
Enclosure
Copy Furnished (without enclosure):
Mr. Doug Huggett
Division of Coastal Management
1638 Mail Service Center
Raleigh, North Carolina 27699-1638
2
COPY ZDOIZo933
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
RECEIVED
U.S. Army Corps of Engineers
Department of the Army
6508 Falls of the Neuse Road
Raleigh, NC 27615
Attn: Mr. Todd Tugwell
Tel. [phone]
AUG 0 3 2001
RALEIGH REGULATORY FIELD OFFICE
RE: Request for Individual Permit (404) and Associated 401 WQC for RTP-RTF South
Parcel Lake project.
Dear Mr. Tugwell:
Initially, on April 1, 1991 Soil and Environmental Consultants, PA submitted a pre-
discharge notification and request for Nationwide 26 permit to the Corps of Engineers
relative to the construction of several impoundment structures at the above referenced
project. That request was approved and subsequently reauthorized in 1995, all work
authorized except one lake was completed prior to expiration of the permit. The purpose
of this application is to request approval to build the final lake initially approved under
Nationwide Permits.
A detailed history of the project is described in the attached letter from Elizabeth Rooks
of the Research Triangle Foundation of NC dated 11/18/99 and avoidance and
justification are also described in that letter. Numerous office and site meetings with the
Corps over the last 2 years have preceded this application. Elizabeth Rooks and I also
met with John Dorney in his office to discuss the project prior to submittal. The current
proposal as discussed was well received during those meetings. A description of lake
construction and design is found in the attached memo from The Rose Group dated
7/9/01.
The project will impact 6.23 acres of bottomland hardwood jurisdictional wetlands
(Filling of 0.88 acres and Flooding of 5.35 acres). 429' of Corps important stream
channel will be filled for the dam, and 6187' of important channel flooded (6616' total).
While 645' of Corps unimportant stream channel will be filled and 2967' of unimportant
channel flooded (3612'). (See attached impact map sheets 1,2,3, and 4).
The client proposes to mitigate for unavoidable losses to wetlands by mitigating at a 1:1
ratio at the Lewis Smith mitigation site which has previously been reviewed by the
NBRT and determined to be an acceptable site by the Corps. (See attached conceptual
Charlotte Office: Greensboro Office: Hickory Office:
PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
site plan sheets 5,6,7, and 8). 6.23 acres of wetlands will be restored on the Smith site.
In addition 13.23 acres of wetlands will be preserved at the RTP site.
(See sheets 2 and 3).
While DWQ does not require mitigation for impacts to streams for construction of
ponds/lakes, the Corps has requested that we mitigate for important stream impacts at a
.5:1 ratio at the Lewis Smith site. Therefore, 3308' of stream will be restored at the
Smith site for this project. In addition the Corps has reviewed sites within RTP that
would benefit by having permanent conservation easement placed on streams that would
otherwise be subject to impact. These areas are approximately shown on the attached
"proposed conservation easements" map. (Sheet 9). Stream length to be protected equals
at least 13,250'.
Sincerely,
6 _
Kevin C. Martin,
President
Other attachments:
USGS vicinity map (Sheet 10)
Adjacent Property Owners (Sheet 11)
Dam Plan View (Sheet 12)
Dam cross section (Sheet 13)
Corps Permit Application Form (ENG FORM 4345, Feb. 94)
Research Triangle Foundation of North Carolina
2 Hanes Drive
Post Office Box 12255
Research Triangle Park, North Carolina 27709
Telephone: [phone] FAX: [phone]
November 18,1999
Mr. Todd J. Tugwell
Regulatory Project Manager
U.S. Corps of Engineers
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Suite 120
Raleigh, NC 27615
Dear Mr. Tugwell:
ion
Elizabeth H. Rooks, Vice President, Planning & Development
Since you were not involved with the Nationwide permits which were
previously approved for construction of lakes in the southern portion of the
Research Triangle Park, I am taking the liberty of describing below the detailed
history of the Foundation's planning for the environmentally sensitive
development of the southern portion of the Research Triangle Park. I have also
attached for your information several of the detailed studies which were done in
conjunction with that planning effort.
In 1986 the Research Triangle Foundation began planning the development of
the 2300 acres which comprise the southern portion of the Research Triangle
Park. The Foundation contracted with the School of Design at N.C. State
University to prepare a land plan for this area. Instrtictions to the School of
Design were to prepare "the best plan possible" for this land - a plan which
would accommodate research uses but which would be an environmentally
responsible plan. The Foundation recognized that our land included floodplains,
wetlands, steep slopes, wildlife (although mock environmental impact studies
conducted by the School of Forestry at N.C. State University have not found any
rare or endangered species) and was in the upper reaches of the watershed for
Jordan Reservoir.
The plan, prepared by the School of Design and currently under implementation
by the Foundation, provides for a significant amount of land (approximately 900
acres) to be placed in permanent open space. For our purposes this open space
.?
RESEARCH TRIANGLE MW
DEVELOPERS OF THE RESEARCH TRIANGLE PARK
Mr. Todd J. Tugwell
Page 2
November 18,1999
is called "Natural Area Preserve". The Natural Area Preserve encompasses the
floodplain and wetland areas associated with the streams which cross the
property. In many areas the Natural Area Preserve includes additional wooded
areas beyond the actual floodplains. Areas of steep slopes on the adjoining lots
are designated as "Surface Cover Maintenance Areas" which will be retained in
existing vegetation to reduce the potential detrimental effects of erosion and
sedimentation during construction on these sites and to help infiltrate
stormwater run-off from these sites after development. In addition, lot coverage
(i.e., impervious surfaces) are limited to 30%. (Please note that the Foundation
was planning for limitations on impervious surfaces long before the State
regulations called for a five mile protected area around Jordan Reservoir.)
Finally, the plan calls for construction of a series of lakes to provide a regional
stormwater retention system for the southern portion of RTP. Studies by the
School of Design indicated that such lakes would provide a pollution reduction
of 70% or more over storm runoff which is not impounded. We feel that the
reduction in potential pollution to Jordan Reservoir that these lakes would
accomplish would benefit all communities who will ultimately use Jordan as a
drinking reservoir and therefore, constructing these lakes represents an
environmentally responsible approach to development of the southern portion of
RTP.
In 1990, in order to begin construction of its first lake the Foundation applied for
401 Water Quality Certification and for a Nationwide Wetlands Permit from the
Corps of Engineers. In order to meet the criteria for the Nationwide Permit, the
Foundation was required by the Corps to reduce the number of impounded lakes
from five to three and to reduce the size of Lake W5 by almost one half. The
Foundation was told that it could replace the two impounded lakes which were
deleted with two lakes which could be constructed with weirs in the stream
channel and the lakebed excavated behind the weir, leaving the existing pockets
of wetlands around the edges of the lake. These revisions allowed the
Foundation to disturb only 2.3 acres of wetlands for lakes which would provide
stormwater retention for a 2300 acre development.
However, as you know, the Foundation is not a fast-paced developer. We have
been developing the Research Triangle Park over the last forty years. Because we
are not a fast-paced developer, we have been unable to complete the construction
of all five lakes within the time horizon of our Nationwide Permit and
Mr. Todd J. Tugwell
Page 3
November 18,1999
a subsequent renewal of that permit. In fact, over the past ten years, we have
completed only two of the lakes (Lakes W1 and W3).
In 1996 we hired an engineer to undertake the design of lakes W2 and W5. After
studying the configurations approved by the Corps in our original Nationwide
permit, our engineer expressed significant concern that Lake W2, which had
been approved as a weir and excavated lake, would not function very well and
would be constantly in jeopardy of silting up. In addition, he recommended that
the dam for lake W5 be moved to the east of the planned north-south arterial
road (now known as Louis Stephens Drive). Since the lake would have preceded
construction of Louis Stephens Drive, future construction of Louis Stephens
Drive would have been very difficult. In August of 1997 we met with the Corps
to discuss these potential changes to Lake W5 and the Corps also advised me
that the Foundation needed to obtain a wetlands permit for other anticipated
wetlands disturbances such as future roads and construction on sites where there
might be other wetlands. It was my understanding from these discussions that
the Foundation needed to apply for a full 404 permit to cover the entire southern
portion and to include the additional wetland impacts necessitated by moving
the lake and including any other anticipated wetlands impacts. Therefore, the
Foundation undertook a full wetlands delineation of the southern portion of RTP
and has tried to anticipate future road and driveway crossings and any other
wetland impacts. We have been working on this delineation over the last two
years. In doing so, we have also attempted to minimize and avoid impacts to the
greatest extent practical.
In making this current 404 permit application, we have deleted Lake W4 which
was originally approved as a weir and excavated lake and would have impacted
approximately 3500 linear feet of important channel. Lake W2, which was
originally approved as a weir and excavated lake, has been combined with Lake
W5 as a single impounded Lake. The combined lake will disturb approximately
the same amount of important stream channel as would have been affected by
the two individual lakes. The large area of significant bottomland hardwoods
which is adjacent to Lake W5 is being protected by a dike and drainage system to
assure that it will continue to function in a manner similar to its present
situation. Lake W5 is the westernmost lake in our proposed system. The
streams in the southern portion of RTP flow from east to west; therefore this lake
offers the last opportunity to filter stormwater run-off before it leaves RTP
property. We sincerely believe that construction of this lake is in the long-term
Mr. Todd J. Tugwell
Page 4
November 18,1999
best interest of the public to ensure reduction of potential pollution to Jordan
Reservoir. Alternatives such as construction of many smaller detention basins
would require excavation of basins, dams and access roads in several areas,
resulting in destruction of natural soil conditions at those sites and alteration of
existing hydrology in the upper drainageways throughout the 2300 acre parcel.
Furthermore, maintenance of one large dam/impoundment is more efficient
than maintenance of many smaller areas. The larger facility would be less
subject to damage from high flows than multiple smaller basins which would
presumably be designed for storms of lower peak run-off.
In consideration for relief from the requirement to undertake stream restoration
for the important stream channels which would be impacted under this 404
permit, the Foundation would offer to place conservation easements along the
remaining stream channels in RTP where it is still within our ability to do so. A
map showing streams on which buffers could be provided is attached. These
buffers would be a minimum of fifty feet in width but in some cases would be
100 feet in width on each side of the stream channel. While many of these
streams are within areas which we intend to be permanent open space, i.e.,
Natural Area Preserve, there are still activities permitted within these areas that
could have an adverse impact on the streams unless such conservation
easements were in place. The types of potentially detrimental activities include
logging, recreational facilities, utility lines etc. We are also offering to add
buffers to streams in the northern portion of RTP, where possible. The northern
portion of the Park was developed under different regulations and does not have
the natural area preserve and surface cover maintenance area protections which
were included in the southern portion. So the addition of conservation
easements in this portion of the Park will provide a significantly higher level of
protection than currently exists. The first question that my Board of Directors
asked me when I was explaining the situation to them was, "Is placing
conservation easements on the streams the right thing to do? If so then do it." I
think this attitude represents the way in which the Research Triangle Foundation
has approached the development of its property.
Thank you for your assistance with our 404 permit application and please feel
free to call me or Kevin Martin if you need any additional information.
Sincerely,
Eli?zth H. Rooks
Attachments
08/01/2001 14:06 9198469467 S&EC PAGE 02
APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT
(33 CFR 326) OMB APPROVAL N0, 0710003
Expires October 1996
Public reporting burden for this collection of information is estimated to average 15 hours per response, including the time for reviewing Instructions,
searching existing data sources, gathering and maintaining the date needed, and completing and reviewing the Collection of information. Send
comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to
Department of Defense, Washington Headquarters Service Directories of Information Operations and Reports, 1215 Jefferson Davie Highway, suite
1204, Arlington, VA 22202-4302= and to the Office of Management and Budget, Paperwork Reduction Project (0710-00031, Washington, DC 20503.
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
Authority: 33 USC 401, Section 10; 1413, Section 404. Principal Purpose: These laws required permits authorizing activities in, or affecting,
navigable waters of the United States, the discharge of dredged or fill material into waters of the United States, and the transportation of dredged
material for the purpose of dumping it Into ocean waters. Routine Uses: Information provided on this from will be used In evaluating the application for
a permit. Disclosure: Disclosure of requested information is voluntary. If information Is not provided, however, the permit application cannot be
processed nor can a permit be Issued.
One set of original drawings or good reproducible copies which show the loostlon 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 over the location of the proposed
activity. An application that is not completed in full will be returned.
f1TEMS f THRU 4 TO BE FLED BY THE CORPS)
1. APPLICATION NO, 2. FIELD OFFICE CODE 3. DATE RECEIVED y ,! 4. DATE APPLICATION COMPLETED
2001 ZO9'33 CESAW - RU- R
5. APPLICANT'S NAME
BELOW TO BE F/LLED BY
Research Triangle Foundation of North
. APPLICANT'S ADDRESS
P.O. Box 12255
ark, NC 27709
8. AUTHORIZED AGENT'S NAME AND TITLE ton "rig rwtj*qu1ra4f)
Soil & Environmental Consultants, PA
9. AGENT'S ADDRESS
11010 Raven Ridge Rd.
Raleigh, NC 27614
7, APPLICANT'S PHONE NOS. W/AREA CODE 110. AGENT'S PHONE NOS. W/AREA CODE
b. Business Phone: [phone] Fax_ [phone] I b. Business Phone: [phone] Fax: [phone]
1 1 • STATEMENT OF AUTHORIZATION
I hereby authorize, Soil & Environmental Consultants PA 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.
C5,7?4w ' •
APPLICANT'S SIGNATURE DATE X11101
NAME, LOCATION AND DESCRIPTION OF PROJECT OR ACTIVITY
12. PROJECT NAME OR TITLE oos naevcrionsl
Research Triangle Park South Parcel Lake WS
13. NAME OF WATERBODY, IF KNOWN wapprlcamo) UT of Kit Creek and
Kit Creek
15. LOCATION OF THE PROJECT
COUNTY Wake STATE NC
16. OTHER LOCATION DESCRIPTIONS, IF KNOWN, kee/nerrucvonal
14. PROJECT STREET ADDRESS irepprice6/e/
N/A See attached USGS
See attached USGS topo
17. DIRECTIONS TO THE SITE
See attached USGS topo
North and East of Louis Stephens Drive, South of Kit Creek Road
08/01/2001 14:06 9198469467 S&EC PAGE 03
ENG. FORM 4345, Feb 94 EDITION OF SEPT 91 IS OBSOLETE (Pro onent: CECW-OR)
18. Nature of Activity toesorfprlon of pm-c& rno/ude a!I featursaJ Construction of a Lake in a large Master Planned Commercial Development (See attached
letter from Research Triangle Foundation for more detailed information).
19. Project Purpose tDese69e tbe reason orpurpaso or 'he "'*4 .
To complete original master plan of project as per long standing plan (See attaohed letter from Research Triangle Foundation).
USE BLOCKS 20-22 IF DREDGED AND/OR FILL MATERIAL IS TO BE DISCHARGED
20. Reason(s) for Discharge
Construction of a lake via typical construction methods.
21. Type(s) of material Being Discharged and the Amount of Each Type in Cubic Yards
N/A (See plans)
22. Surface Area in Acres of Wetlands or Other Waters Filled Isse lnerrucrrensl
5.36 acres wetlands filled and 0.88 flooded, 429' important stream filled and 6187' flooded, 645' unimportant stream filled and 2697' flooded (See
attached S&EC PA letter for more detailed information)
23. Is Any Portion of the Work Already Complete? Yea No X 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 see attached list
25. List of other Certifications or Approvals/Denials Received from other Federal, State or Local Agencies for Work Described in This Application.
AGENCY TYPE APPROVAL" IDENTIFICATION NUMBER DATE APPLIED DATE APPROVED DATE DENIED
9 her a pproyals (e.g. 401 Water Quality Certification, Dom Safety Permit, etc.) are in progress or are pending outcome of
t is op?fcation.
Would 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
applioatlon is complete and accurate. I further certify that ( possess the authority to undertake the work described herein or am acting as the
duly authorized agent of the applicant.
6/13. A41 . /44 2-
SIGNATURE OF APPLICANT DATE SIGNATURE 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.
Date: 09-July-01
To: Kevin Ma
From: Rick Moore O'A
RE: Responses to S&EC/COE Comments in Memorandum dated June 22, 2001
The following is a list of responses to the comments received through S&EC from the
Corps of Engineers (copy attached) for the Lake W-5 permitting:
1- Cross section and plan view of dam is attached.
2- Cross section and plan view of the berm that will protect the wetlands is attached
3- During construction, various heavy construction equipment such as earth moving pans,
excavators, sheepsfoot rollers, bull dozers and dump trucks will be used. Estimated hours of
operation will be from 7:00 am until 7:00 pm
4- No minimum stream flow release will be provided unless requested by one of the reviewing
agencies. However, the minimum flows are usually based on the 7Q10 flow for a given
stream. Kit Creek is in the Triassic basin and is estimated to have a 7Q10 of zero.
5- The road crossing in the upper portion of the lake is currently under construction and should
be completed prior to beginning construction of the remainder of the lake. Upon receiving
approval from the Corps of Engineers, FEMA, State Dam Safety and erosion control officials,
clearing of the lake bed will be initiated. Once the clearing is complete, the berm protecting the
wetlands will be constructed followed by the dam construction. An erosion control plan will be
obtained prior to initiating any land clearing activity.
6- The borrow source has not been determined. However, they will not come from any area
which will impact wetlands.
7- The creek flows very near the proposed toe of slope in several places. Because it is
desirable to achieve a 3:1 slope on the lake edges, and to keep proposed slopes from
encroaching on adjacent properties, the creek will need to be realigned in some areas. This
will be done simply by excavating a channel in a new location and filling the channel in its
existing location. All of the areas of creek realignment are within the limits of the proposed
lake and therefore will be inundated upon completion of construction.
MEMORANDUM
Mr. Kevin Martin
Page 2
July 9, 2001
8- Some of the lake bed will be dredged to satisfy the depth requirements for a stormwater
detention pond. Approximately 20 acres will be excavated from 1' to 4' to achieve a minimum
depth of 4'. No wetlands outside of the limits of the proposed in'tpoundment will be dredged
during this excavation. Approximately 5 acres of wetlands within the proposed limits of the
impoundment will be dredged during this excavation.
9- Stream rerouting will be accomplished by excavation of new stream alignment and filling in
the existing stream bed as necessary within the limits of the proposed impoundment.
10- A FEMA CLOMR has been requested and is under the review process. Detailed design of
the dam will not proceed until such time as the necessary wetland permitting is approved.
Once detailed design is completed, we will apply for the dam safety permit.
11- We are unaware of any stream sampling requirements that may be imposed.
12- The lake has a maximum depth of 8 feet just upstream from the dam (this does not include
the depth of the channel). After completion of excavation, the average depth of the lake will be
is approximately 5 feet.
13- No temporary stream crossings outside of the limits of the proposed impoundment are
necessary.
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ACTION I.D.# 200120933
RESEARCH TRIANGLE FOUNDATION, INC.
P.O. BOX 12255
RTP, NC 27709
RTF SOUTH PARCEL
LAKE W5
IN: KIT CREEK
AT: RESEARCH TRIANGLE PARK
COUNTY OF. WAKE
APPUCA71ON BY: SOIL & ENVIRONMENTAL CONSULTANTS, P.A.
SHEET 1 of 13
GRAPHIC SCALE
1 " = 2000'
0 2000 4000
5
LEGEND, 6 AC)
(80
.
(25' JURISDICTIONAL STREAM TOP WIDTH)
FUTURE ROADS
CONSTRUCTION COMPLETED
'
CR
- --?-?- INTERVALS) - IMPORTANT
IMPACTED STREAM (100 ?p
-• • • IMPACTED STREAM (100' INTERVALS) - UNIMPORTANT
JURISDICTIONAL WETLANDS
(75. 1 A C)

IMPACTED FILL AREA
rG,y

IMPACTED FLOODED AREA O

y`
lpo
12
0.64 WETLAND (63.9 AC)
ACRES
PRESERVED

1.23 WETLA ND oJ? 8.13 WETLAND -?
ACRES ACRES
PRESERVED PRESERVED

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PRESERVED
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ACTION I.D.# 200120933
RESEARCH TRIANGLE FOUNDATION, INC. ZI
P.O. BOX 12255 FILL
RTP, NC ;27709
a RTF SOUTH W5 PARCEL
LAKE
No IN: KIT CREEK
AT: RESEARCH TRIANGLE PARK GRAPHIC SCALE
crt COUNTY OF. WAKE
APPLICATION BY: SOIL & ENVIRONMENTAL CONSULTANTS, P.A. 1 " = 4001
13 0 400 800
SHEET 2 of
LOGEND
(25' JURISDICTIONAL STREAM TOP WIDTH)
FUTURE ROADS
CONSTRUCTION COMPLETED
IMPACTED STREAM (100' INTERVALS) - IMPORTANT
• • • IMPACTED STREAM (100' INTERVALS) - UNIMPORTANT
JURISDICTIONAL WETLANDS
- IMPACTED FILL AREA
IMPACTED FLOODED AREA
10
(76.5 AC) 2.8Q WETLANE
!ACRES 1 '4
PRESERVED
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ERICSSON, INC.
(49.0 AC)
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(15.5 AC)
CISCO SYSTEMS, INC.
(70.6 AC)
CISCO SYSTEMS, /NC.
(56.9AC)
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ACT10N I.D.# 200120933
RESEARCH TRIANGLE FOUNDATION, INC.
P.O, BOX 12255
RTP, NC 27709
RTF SOUTH PARCEL
LAKE W5
IN. KIT CREEK
AT: RESEARCH TRIANGLE PARK
COUNTY OF; WAKE
APPLICATION BY. SOIL do ENVIRONMENTAL CONSULTANTS, Pk
SHEET 3 of 13
IMPACT SUMMARY TABLE

IMPACT IMPACT AREA/
LENGTH
WETLAND
JUSTIFICATION
NEW ROAD BY RM

ZA
ZA - LAKE - (FILL) 18469 s. f. LAKE CONS7RUC77ON
ZA - LAKE - (FLOODED) 186058 s.f LAK£ CONSMUC770N

ZB
ZB -- LAKE - FILL 2269 s f. LAKE CONS7RUC7I0N
8 - AK - (FI-0ODED) 28217 s. f. LAKE CONSTRUC770N

ZC
ZC - LAKE - FILL -0- LAKE CONSTRUCTION
ZC - LAKE - FLOODED 12498 s f. LAKE CONSTRUC710N

ZD
ZD - LAKE - FILL 17637 s f. LAME CONSTRUC770tV
ZD- LAKE - FLOODED 8781 s. f. LAKE CONSTRUCTION

ZH - LOUIS STEPHENS DR. 0 KIT CREEK TRIB 328.6 L f. NIA NEW ROAD BY RTP
ZH - LAKE - FILL (IMPORTANT) 385.65 4f. NIA LAKE CONS7RUC770N
ZH - LAKE - FILL (UNIMPORTANT) 376.14 4f. NIA LAKE CONS7RU0770N
ZH - LAKE - FLOODED (IMPORTANT) 3657.73 If NIA LAKE CONSTRUCTION
ZH - LAKE - FLOODED (UNIMPORTANT) 2109.15 If NIA LAKE CONSTRUCTION

ZI - LAKE - FILL (IMPORTANT) 43.26 4f. NIA LAKE CON57RU077ON
ZI - LAKE - FILL (UNIMPORTANT) 26'8.65 4f NIA LAKE CON57RUC77ON
ZI - LAKE - FLOODED (IMPORTANT) 2530.12 4 f. NIA LAKE CONSTRUC770N
ZI - LAKE - FLOODED (UNIMPORTANT) 85764 If NIA LAKE CONSTRUC170N
ACTION I.D.# 200120933
RESEARCH TRIANGLE FOUNDATION, INC.
P.O. BOX 12255
RTP, NC 27709
RTF SOUTH PARCEL
LAKE W5
IN: KIT CREEK
AT. RESEARCH TRIANGLE PARK
COUNTY OF: WAKE
APPLICATION BY: SOIL & ENVIRONMENTAL CONSULTANTS, P.A.
SHEET 4 OF 13
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RTF/Mt. Vernon Springs Mitigation Site
Planting plan will consist of 13 individual hardwood tree species as listed below. The
majority of the restoration and creation component (60%) will consist of green ash,
American sycamore, swamp chestnut oak and river birch. The goal is to plant
approximately 600 bare-root stems per acre, with an approximate 8-foot by 8-foot
spacing. Small tree and shrub species and a customized herbaceous seed mix will be
utilized to supplement the hardwood tree plantings. Willow stakes that will be used for
the stream bank stabilization and will be harvested from on-site sources.
Wetland Restoration/Creation Plant List
Scientific Name Common Name
Trees
Faxinus pennsylvanica Green ash
Platanus occidentalis American sycamore
ercus michauxii Swamp chestnut oak
Betula nigra River birch
Salix nigra Black Willow
Celtis laevi ata Sugar
ercus lyrata Overcu oak
uercus laurifolia Laurel oak
Ulmus americana American elm
Corpus Amomum S' do ood
C a a uatica Water Hicko
N ssa a uatica Water tupelo
Quercus nigra Water oak
Small Trees and Shrubs
Corpus amomum Silky dogwood
Alnus serrulata T Alder
C inns carolinana Ironwood
Ce halanthus occidentalis Button-bush
Ilex verticillata Winterbe
Amelanchier obovalis Shadbush
C canthus floridus S icebush
Viburnum nudum Viburnum
Rosa alustris Swamp rose
Sambucus canadensis Elderberry
Itea vir ' 'ca Vir ' ' Willow
'Availability ofthese individual species may be limited Therefore, adjustments
to the species composition may be required In addition, it will more than likely
take a minimum of 6 months for delivery, following the order date.
ACTION I.D.# 200120933
RESEARCH TRIANGLE FOUNDATION. INC.
P.O. BOX 12255
RTP. NC 27709
RTF SOUTH PARCEL
LAKE WS
IN: KIT CREEK
AT: RESEARCH TRIANGLE PARK
COUNTY OF: WAKE
APPLICATION BY: SOIL & ENVIRONMENTAL CONSULTANTS. PA.
SHEET? OF 13
Woody and Herbaceous Wetland Seed Mix
Carex crinita
Scirpus cyperinus
Eleocharis palustris
Saurrurus cernuus
Lobelia cardinalis
Ludwigia alternafolia
Panicum virgatum
Osmunda chm momea
Cephalanthus occidentalis
Ilex verticiHata
Leersia oryzoides
Lindera benzoin
Polygonum arifolium
Sambucus canadensis
*Availability ofthese individual species may be limited. Therefore, adjustments to the species
composition may be required In addition, it will more than likely take a minimum of 6 months for
delivery, following the order date.
ACTION I.D.$ 200120933
RESEARCH TRIANGLE FOUNDATION. INC.
P.O. BOX 12255
RTP. NC 27709
RTF SOUTH PARCEL
LAKE WS
IN: KIT CREEK
AT: RESEARCH TRIANGLE PARK
COUNTY OF: WAKE
APPLICATION BY. SOIL & ENVIRONMENTAL CONSULTANTS. PA
SHEET 8 OF 13
/.030
PROPOSED CONSERVATION EASEMENTS
(ALONG CURRENTLY UNBUFFERED STREAMS)

ACTION I.D.# 200120933
RESEARCH TRIANGLE FOUNDATION. INC.
P.O. BOX 12255
RIP. NC 27709
RTF SOUTH PARCEL
LAKE W5
IN: KIT CREEK
AT'. RESEARCH TRIANGLE PARK
COUNTY OR WAKE
APPLICATION BY: SOIL '& ENVIRONMENTAL CONSULTANTS. PA
SHEET 9 OF 13
i
Proposed Stream Buffer Easement Notes:
1250' between the two lakes - Easement will stop short of the spillway of the
existing lake such that there is sufficient room in case the dam needs to be
widened in the future for a road connection for Cisco between their sites on Kit
Creek Road and site 26/27. There is a Wake County sewer line in this vicinity but
until the stream is surveyed, we won't know how far it is from the stream.
2. 4000' to the west of Louis Stephens Drive Extension. We need to reserve the
option of one crossing which will be either at the north end or the south end - not
determined which yet.
3. 1750' west of Davis Drive, north of South Loop Road. There is a sewer line in
this area but until it is surveyed we don't know exactly how far from the stream
bank. We may want to put a greenway trail in this area in the future but it is flat
enough that we could stay out of the 50' buffer. We would need to reserve the
ability to do one temporary construction drive crossing.
4. 1750' west of Davis Drive, south of South Loop Road. There is a sewer line in
this area but until it is surveyed we don't know exactly how far it is from the
stream bank. Ditto on the greenway trail. We would nee to reserve the ability to
do one temporary construction drive crossing.
5. 1250' between Louis Stephens Drive Extension and NC 55 (exclusive of the RR
right of way). There is a Wake County sewer line that runs in this area, but I
think it is more than 50' from the stream, except where the stream goes under the
RR.
6. 3000' east of site 33. No restrictions known.
7. 2400' to the west and north of site 5. No restriction known.
By my calculation this is 15,400 If. However, field survey will likely yield a higher
number since the 15,400 if does not account for stream meanders.
Note: Based on a field review with the corps it was determined that on-site
restoration was not a preferred option. It was decided preservation of existing
unprotected riparian buffers was preferable to any on-site restoration or enhancement
because of existing site conditions.
V = 2000'
Mgr.: KCM 1111101
Figure 1 r Location Map
Proposed Louis Stephens Drive
Research Triange Park
RTP, Durham & Wake Cos., NC
Soil & Environmental Consultants, Inc.
11010 Raven Ridge Rd.- Raleigh, NC 27614
[phone] • [phone]
Web Page: www.SandEC.com
RTF SOUTH PARCEL
LAKE W5
IN: KIT CREEK
AT. RESEARCH TRIANGLE PARK
COUNTY OF. WAKE
APPLICATION BY: SOIL & ENVIRONMENTAL CONSULTANTS. P.A.
SHEETl OF 13
Adjacent Property Owners
Cisco Systems, Inc.
Attention: Ms. Nancy Schwarm
P.O. Box 14987
Research Triangle Park, NC 27709
Delta Products Corporation
Attention: M.S. Huang, Vice President, East Coast Operations
P.O. Box 12173
Research Triangle Park, NC 27709
Ericsson Inc.
Attention: John Brownrigg, Director of Real Estate Operations
740 Campbell Road
Richardson, TX 75081
ACTION I.D.J 200120933
RESEARCH TRIANGLE FOUNDATION. INC.
P.O. BOX 12255
RTP. NC 27709
RV SOUTH PARCEL
LAKE W5
IN: KIT CREEK
AT: RESEARCH TRIANGLE PARK
COUNTY OR WAKE
APPLICATION BY: SOIL k ENVIRONMENTAL CONSULTANTS. PA.
SHEET 11 OF 13
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State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael Easley, Governor
William Ross, Secretary
Gregory Thorpe, Director
011206
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
Dear Sir or Madam:
1 ? •
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
August 10, 2001
DWQ # 011206
COE# 200120933
AM 16210
On August 9, 2001, your application for a 404 Permit and 401 Water Quality
Certification on behalf of Research Triangle Foundation for a project in Wake County
was forwarded to us by the-,U.S. Army Corps of Engineers. Please note that you are ,
required to submit your request for a 401 Water Quality Certification under separate.
cover to the Division of Water Quality. Also please note that beginning January 1, 19.99,
the N.C. General Assembly passed legislation requiring payment of a fee for all
applications. This fee amounts to $200 for projects with 1 han an acre of wetland
impact and less :than 1501inear feet f im acted stre For projects with an acre or
more wetland iact or 150 feet or more of impacted stream, a fee of $475 is required.
In order for DWQ to review and process your request, you must send a check for the
appropriate amount made payable to the N.C. Division of Water Quality attached to the
applications. Also, seven copies of all application materials sent to the Corps are required
for our review:
Please call Rob Ridings at 919-733-1786 or visit our web site at
http://h2o.enr.state.nc.us/ncwetlands if you have any questions.
Sincerely4vm;
Rngscc: Central Files
Todd Tugwell, USACOE, Raleigh Regulatory Field Office
File Copy
Wetlands/401 Unit 2321 Crabtree Blvd. Suite 250 Raleigh, North Carolina 27604
Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post consumer paper
108/01/2001 14:06 9198469467 S&EC PAGE 02
APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT I OMB APPROVAL NO. 0710-003
(33 CFR 326) 0 112 0 6 Expires October 1996
Public reporting burden for this collection of information is estimated to average 6 hours per response, including the time for reviewing Instructions,
searching existing data sources, gathering and maintaining the date needed, and completing and reviewing the collection of information. Send
comments regarding this burden estimate or any other aspect of this collection of Information, including suggestions for reducing this burden, to
Department of Defense, Washington Headquarters Service Directories of Information Operations and Reports, 1215 Jefferson Davis Highway, Suite
1204, Arlington, VA 22202-4302= and to the Office of Management and Budget, Paperwork Reduction Project (0710-0003), Washington, DC 20503.
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
Authority: 33 USC 401, Section 10; 1413, Section 404. Principal Purpose: These laws required permits authorizing activities in, or affecting,
navigable waters of the United States, the discharge of dredged or fill material into waters of the United States, and the transportation of dredged
material for the purpose of dumping it into ocean waters. Routine Uses. Information provided on this from will be used In evaluating the application for
a permit. Disclosure: Disclosure of requested information is voluntary. If information Is not provided, however, the permit application cannot be
processed nor can a permit he issued.
One set of original drawings or good reproducible copies which show the looatlon 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 over Ate location of the proposed
activity. An application that is not completed in full will be returned,
I r11RU 4 TO BE FILLED BY THE
1. APPLICATION NO. 12. FIELD OFFICE CODE 13. DATE RECEIVED 4. DATE APPLICATION COMPLETED
5. APPLICANT'S NAME
BELOW TO BE
Research Triangle Foundation of North Carolina
6. APPLICANT'S ADDRESS
P.O. Box 12255
ark, NC 27709
8. AUTHORIZED AGENT'S NAME AND TITLE Amii,"nrh; notlaqutrae!
Soil & Environmental Consultants, PA
9. AGENT'S ADDRESS
11010 Raven Ridge Rd.
Raleigh, NC 27614
7. APPLICANT'S PHONE NOS. W/AREA CODE 110. AGENT'S PHONE NOS. W/AREA CODE
b. Business Phone: [phone] Fax: [phone] I b, Business Phone: [phone] Fax: [phone]
11 STATEMENT OF AUTHORIZATION
I hereby authorize, Soil & Environmental Con2ultants PA 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.
C, W. ?Ow"'?
APPLICANT'S SIGNATURE DATE
/
NAME, LOCATION AND DESCRIPTION OF PROJECT OR ACTIVITY
12. PROJECT NAME OR TITLE r8991nab1Xrl0ns)
Research Triangle Park South Parcel Lake W5
13. NAME OF WATERBODY, IF KNOWN FfapplIcawl UT of Kit Creek and
Kit Creek
1S. LOCATION OF THE PROJECT
COUNTY Wake STATE NC
16. OTHER LOCATION DESCRIPTIONS, IF KNOWN, ke,immmrionsl
14. PROJECT STREET ADDRESS I/llapplice6lel
N/A See attached USGS
See attached USGS topo
17. DIRECTIONS TO THE SITE
See attached USGS topo
North and East of Louis Stephens Drive, South of Kit Creek Road
08/01/2001 14:06 9198469467 S&EC PAGE 03
ENG. FORM 4345, Feb 94 EDITION OF SEPT 91 IS OBSOLETE fPro anent: CECW-OR)
18. Nature of Activity rDesorfpLOnofprofec;InNudea!/fe?zuresl Construotion of a Lake in a large Master Planned Commercial Development (see attached
letter from Research Triangle Foundation for more detailed information).
19. Project Purpose (Dwrtbo the reason or purpose of the pro/6,C4 *8e iMft x1001
To complete original master plan of project as per long standing plan (See attached letter from Research Triangle Foundation).
USE BLOCKS 20-22 IF DREDGED AND/OR FILL MATERIAL IS TO BE DISCHARGED
20. Reason(s) for Discharge
Construction of a lake via typical construction methods.
21. Type(s) of material Being Discharged and the Amount of Each Type in Cubic Yards
N/A (See plans)
22. Surface Area in Acres of Wetlands or Other Waters Filled isee;,ramnedons?
5.36 acres wetlands filled and 0.88 flooded, 429' important stream filled and 6187' flooded, 645' unimportant stream filled and 2697' flooded (See
attached S&EC PA letter for more detailed information)
23. is Any Portion of the Work Already Complete? Yea No X_ 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 see attached list
25. List of Other Certifications or Approvals/Denials Received from other Federal, State or Local Agencies for Work Described in This Application.
AGENCY TYPE APPROVAL] IDENTIFICATION NUMBER DATE APPLIED DATE APPROVED DATE DENIED
;herpa ?cei on (e.g. 401 Water Quality Certification, Dam Safety Permit, etc.) are in progress or are pending outcome of
tisa?
Would include but is not restricted to zoning, building and flood plain permits.
26. Application is hereby made for a permit or permits to authorl2s 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 SIGNATURE 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 then five years or both.

Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] - Fax: [phone]
www.SandEC.com
U.S. Army Corps of Engineers
Department of the Army
6508 Falls of the Neuse Road
Raleigh, NC 27615
Attn: Mr. Todd Tugwell
Tel. [phone]
RE: Request for Individual Permit (404) and Associated 401 WQC for RTP-RTF South
Parcel Lake project.
Dear Mr. Tugwell:
Initially, on April 1, 1991 Soil and Environmental Consultants, PA submitted a pre-
discharge notification and request for Nationwide 26 permit to the Corps of Engineers
relative to the construction of several impoundment structures at the above referenced
project. That request was approved and subsequently reauthorized in 1995, all work
authorized except one lake was completed prior to expiration of the permit. The purpose
of this application is to request approval to build the final lake initially approved under
Nationwide Permits.
A detailed history of the project is described in the attached letter from Elizabeth Rooks
of the Research Triangle Foundation of NC dated 11/18/99 and avoidance and
justification are also described in that letter. Numerous office and site meetings with the
Corps over the last 2 years have preceded this application. Elizabeth Rooks and I also
met with John Dorney in his office to discuss the project prior to submittal. The current
proposal as discussed was well received during those meetings. A description of lake
construction and design is found in the attached memo from The Rose Group dated
7/9/01.
The project will impact 6.23 acres of bottomland hardwood jurisdictional wetlands
(Filling of 0.88 acres and Flooding of 5.35 acres). 429' of Corps important stream
channel will be filled for the dam, and 6187' of important channel flooded (6616' total).
While 645' of Corps unimportant stream channel will be filled and 2967' of unimportant
channel flooded (3612'). (See attached impact map sheets 1,2,3, and 4).
The client proposes to mitigate for unavoidable losses to wetlands by mitigating at a 1:1
ratio at the Lewis Smith mitigation site which has previously been reviewed by the
NBRT and determined to be an acceptable site by the Corps. (See attached conceptual
Charlotte Office: Greensboro Office: Hickory Office:
PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
site plan sheets 5,6,7, and 8). 6.23 acres of wetlands will be restored on the Smith site.
In addition 13.23 acres of wetlands will be preserved at the RTP site.
(See sheets 2 and 3).
While DWQ does not require mitigation for impacts to streams for construction of
ponds/lakes, the Corps has requested that we mitigate for important stream impacts at a
.5:1 ratio at the Lewis Smith site. Therefore, 3308' of stream will be restored at the
Smith site for this project. In addition the Corps has reviewed sites within RTP that
would benefit by having permanent conservation easement placed on streams that would
otherwise be subject to impact. These areas are approximately shown on the attached
"proposed conservation easements" map. (Sheet 9). Stream length to be protected equals
at least 13,250'.
Sincerely,
Kevin C. Martin,
President
Other attachments:
US GS vicinity map (Sheet 10)
Adjacent Property Owners (Sheet 11)
Dam Plan View (Sheet 12)
Dam cross section (Sheet 13)
Corps Permit Application Form (ENG FORM 4345, Feb. 94)
Research Triangle Foundation of North Carolina
2 Hanes Drive
Post Office Box 12255
Research Triangle Park, North Carolina 27709
Telephone: [phone] FAX: [phone]
November 18,1999
Mr. Todd J. Tugwell
Regulatory Project Manager
U.S. Corps of Engineers
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Suite 120
Raleigh, NC 27615
Dear Mr. Tugwell:
/off
Elizabeth H. Rooks, Vice President, Planning & Development
Since you were not involved with the Nationwide permits which were
previously approved for construction of lakes in the southern portion of the
Research Triangle Park, I am taking the liberty of describing below the detailed
history of the Foundations planning for the environmentally sensitive
development of the southern portion of the Research Triangle Park. I have also
attached for your information several of the detailed studies which were done in
conjunction with that planning effort.
In 1986 the Research Triangle Foundation began planning the development of
the 2300 acres which comprise the southern portion of the Research Triangle
Park. The Foundation contracted with the School of Design at N.C. State
University to prepare a land plan for this area. Instructions to the School of
Design were to prepare "the best plan possible" for this land - a plan which
would accommodate research uses but which would be an environmentally
responsible plan. The Foundation recognized that our land included floodplains,
wetlands, steep slopes, wildlife (although mock environmental impact studies
conducted by the School of Forestry at N.C. State University have not found any
rare or endangered species) and was in the upper reaches of the watershed for
Jordan Reservoir.
The plan, prepared by the School of Design and currently under implementation
by the Foundation, provides for a significant amount of land (approximately 900
acres) to be placed in permanent open space. For our purposes this open space
.?
RESL4kACH TRIANGLE rAM
DEVELOPERS OF THE RESEARCH TRIANGLE PARK
Mr. Todd J. Tugwell
Page 2
November 18,1999
is called "Natural Area Preserve". The Natural Area Preserve encompasses the
floodplain and wetland areas associated with the streams which cross the
property. In many areas the Natural Area Preserve includes additional wooded
areas beyond the actual floodplains. Areas of steep slopes on the adjoining lots
are designated as "Surface Cover Maintenance Areas" which will be retained in
existing vegetation to reduce the potential detrimental effects of erosion and
sedimentation during construction on these sites and to help infiltrate
stormwater run-off from these sites after development. In addition, lot coverage
(i.e., impervious surfaces) are limited to 30%. (Please note that the Foundation
was planning for limitations on impervious surfaces long before the State
regulations called for a five mile protected area around Jordan Reservoir.)
Finally, the plan calls for construction of a series of lakes to provide a regional
stormwater retention system for the southern portion of RTP. Studies by the
School of Design indicated that such lakes would provide a pollution reduction
of 70% or more over storm runoff which is not impounded. We feel that the
reduction in potential pollution to Jordan Reservoir that these lakes would
accomplish would benefit all communities who will ultimately use Jordan as a
drinking reservoir and therefore, constructing these lakes represents an
environmentally responsible approach to development of the southern portion of
RTP.
In 1990, in order to begin construction of its first lake the Foundation applied for
401 Water Quality Certification and for a Nationwide Wetlands Permit from the
Corps of Engineers. In order to meet the criteria for the Nationwide Permit, the
Foundation was required by the Corps to reduce the number of impounded lakes
from five to three and to reduce the size of Lake W5 by almost one half. The
Foundation was told that it could replace the two impounded lakes which were
deleted with two lakes which could be constructed with weirs in the stream
channel and the lakebed excavated behind the weir, leaving the existing pockets
of wetlands around the edges of the lake. These revisions allowed the
Foundation to disturb only 2.3 acres of wetlands for lakes which would provide
stormwater retention for a 2300 acre development.
However, as you know, the Foundation is not a fast-paced developer. We have
been developing the Research Triangle Park over the last forty years. Because we
are not a fast-paced developer, we have been unable to complete the construction
of all five lakes within the time horizon of our Nationwide Permit and
Mr. Todd J. Tugwell
Page 3
November 18,1999
a subsequent renewal of that permit. In fact, over the past ten years, we have
completed only two of the lakes (Lakes W1 and W3).
In 1996 we hired an engineer to undertake the design of lakes W2 and W5. After
studying the configurations approved by the Corps in our original Nationwide
permit, our engineer expressed significant concern that Lake W2, which had
been approved as a weir and excavated lake, would not function very well and
would be constantly in jeopardy of silting up. In addition, he recommended that
the dam for lake W5 be moved to the east of the planned north-south arterial
road (now known as Louis Stephens Drive). Since the lake would have preceded
construction of Louis Stephens Drive, future construction of Louis Stephens
Drive would have been very difficult. In August of 1997 we met with the Corps
to discuss these potential changes to Lake W5 and the Corps also advised me
that the Foundation needed to obtain a wetlands permit for other anticipated
wetlands disturbances such as future roads and construction on sites where there
might be other wetlands. It was my understanding from these discussions that
the Foundation needed to apply for a full 404 permit to cover the entire southern
portion and to include the additional wetland impacts necessitated by moving
the lake and including any other anticipated wetlands impacts. Therefore, the
Foundation undertook a full wetlands delineation of the southern portion of RTP
and has tried to anticipate future road and driveway crossings and any other
wetland impacts. We have been working on this delineation over the last two
years. In doing so, we have also attempted to minimize and avoid impacts to the
greatest extent practical.
In making this current 404 permit application, we have deleted Lake W4 which
was originally approved as a weir and excavated lake and would have impacted
approximately 3500 linear feet of important channel. Lake W2, which was
originally approved as a weir and excavated lake, has been combined with Lake
W5 as a single impounded Lake. The combined lake will disturb approximately
the same amount of important stream channel as would have been affected by
the two individual lakes. The large area of significant bottomland hardwoods
which is adjacent to Lake W5 is being protected by a dike and drainage system to
assure that it will continue to function in a manner similar to its present
situation. Lake W5 is the westernmost lake in our proposed system. The
streams in the southern portion of RTP flow from east to west; therefore this lake
offers the last opportunity to filter stormwater run-off before it leaves RTP
property. We sincerely believe that construction of this lake is in the long-term
Mr. Todd J. Tugwell
Page 4
November 18,1999
best interest of the public to ensure reduction of potential pollution to Jordan
Reservoir. Alternatives such as construction of many smaller detention basins
would require excavation of basins, dams and access roads in several areas,
resulting in destruction of natural soil conditions at those sites and alteration of
existing hydrology in the upper drainageways throughout the 2300 acre parcel.
Furthermore, maintenance of one large dam/impoundment is more efficient
than maintenance of many smaller areas. The larger facility would be less
subject to damage from high flows than multiple smaller basins which would
presumably be designed for storms of lower peak run-off.
In consideration for relief from the requirement to undertake stream restoration
for the important stream channels which would be impacted under this 404
permit, the Foundation would offer to place conservation easements along the
remaining stream channels in RTP where it is still within our ability to do so. A
map showing streams on which buffers could be provided is attached. These
buffers would be a minimum of fifty feet in width but in some cases would be
100 feet in width on each side of the stream channel. While many of these
streams are within areas which we intend to be permanent open space, i.e.,
Natural Area Preserve, there are still activities permitted within these areas that
could have an adverse impact on the streams unless such conservation
easements were in place. The types of potentially detrimental activities include
logging, recreational facilities, utility lines etc. We are also offering to add
buffers to streams in the northern portion of RTP, where possible. The northern
portion of the Park was developed under different regulations and does not have
the natural area preserve and surface cover maintenance area protections which
were included in the southern portion. So the addition of conservation
easements in this portion of the Park will provide a significantly higher level of
protection than currently exists. The first question that my Board of Directors
asked me when I was explaining the situation to them was, "Is placing
conservation easements on the streams the right thing to do? If so then do it." I
think this attitude represents the way in which the Research Triangle Foundation
has approached the development of its property.
Thank you for your assistance with our 404 permit application and please feel
free to call me or Kevin Martin if you need any additional information.
Sincerely,
Eli?Zth H. Rooks
Attachments
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ACTION I.D.f 200120933
RESEARCH TRIANGLE FOUNDATION, INC.
P.O. BOX 12255
RTP, NC 27709
RTF SOUTH PARCEL
LAKE W5
IN: KIT CREEK
AT: RESEARCH TRIANGLE PARK
COUNTY OF: WAKE
APPLICATION BY: SOIL do ENVIRONMENTAL CONSULTANTS, P.A.
SHEET -1 OF 13
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GRAPHIC SCALE
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CONSTRUCTION COMPLETED
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JURISDICTIONAL WETLANDS
(75.1 A I rGy
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IMPACTED FLOODED AREA G
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ACTION I.D.# 200120933
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YLo RTF SOULAKTH W5 PARCEL
NO IN: KIT CREEK
AT. RESEARCH TRIANGLE PARK GRAPHIC SCALE
COUNTY OF: WAKE
APPLICATION BY: SOIL & ENVIRONMENTAL CONSULTANTS. PA 1" = 4001
SHEET 2 OF 13 0 400 800
LffGEND
(25' JURISDICTIONAL STREAM TOP WIDTH)
FUTURE ROADS
CONSTRUCTION COMPLETED
?--?- IMPACTED STREAM (100' INTERVALS) - IMPORTANT
• IMPACTED STREAM (100' INTERVALS) - UNIMPORTANT
JURISDICTIONAL WETLANDS
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RESEARCH TRIANGLE FOUNDATION, INC.
P.O. BOX 12255
RTP, NC 27709
RTF SOUTH PARCEL
LAKE W5
CISCO SYSIN: KIT CREEK
(56.9COUNTY OFAT. : RESEARCH TRIANGLE PARK WAKE
APPLICATION BY: SOIL do ENVIRONMENTAL CONSULTANTS, P.A.
SHEET 3 of 13

S- DEL TA PROD.
(15.5 AC)
IMPACT SUMMARY TABLE

IMPACT IMPACT AREA/
LENGTH
WETLAND
JUSTIFICATION
NEW ROAD BY RTP

ZA
ZA - LAKE - (FILL) 18469 s. f. LAKE CONS7RUC77ON
ZA - LAKE - (FLOODED) 186058 at LAKE CONS7RUC77ON

ZB
ZB - LAKE - FILL 2269 s. f. LAKE CONSTRUC77ON
e - AK - (FLOODED) 28217 s f. LAKE CONS7RUC77ON

ZC
ZC - LAKE - FILL -0- LAKE CONSTRUC770N
ZC - LAKE - FLOODED 12498 s. f. LAKE CONSTRUC77ON

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ZD - LAKE - FILL 17637 s. f. LAKE CONS7RUC77ON
ZD- LAKE - FLOODED 8781 a f LAKE CONS7RUC770N

ZH - LOUIS STEPHENS DR. 0 KIT CREEK TRIB 3286 I f. NIA NEW ROAD BY R7P
ZH - LAKE - FILL (IMPORTANT) 38 65 1 f. NIA LAKE C0VVS7RUC7701V
ZH - LAKE - FILL (UNIMPORTANT) 376.14 1 f. N/A LAKE 00NS7RUC770N
ZH - LAKE - FLOODED (IMPORTANT) 3657.73 1f. N/A LAKE CoNS77?UC77ON
ZH - LAKE - FLOODED (UNIMPORTANT) 2109.15 If N/A LAKE CONS77?UC7701V

ZI - LAKE - FILL (IMPORTANT) 43.26 1 f. NIA LAKE CONS77?UC77ON
ZI - LAKE - FILL (UNIMPORTANT) 268.65 If N/A LAKE CONS7RUC770N
ZI - LAKE - FLOODED (IMPORTANT) 2530.12 1 f. N/A LAK£ CONS7RUC77ON
ZI - LAKE - FLOODED (UNIMPORTANT) 857.64 1 f. N/A LAKE C01VSTRUC77aV
ACTION I.D.# 200120933
RESEARCH TRIANGLE FOUNDATION, INC.
P.O. BOX 12255
RTP, NC 27709
RTF SOUTH PARCEL
LAKE W5
IN: KIT CREEK
AT: RESEARCH TRIANGLE PARK
COUNTY OF: WAKE
APPLICATION BY. SOIL & ENVIRONMENTAL CONSULTANTS, P.A.
SHEET 4 of 13
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State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael Easley, Governor
William Ross, Secretary
Gregory Thorpe, Director
Ago;
AWIV
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
August 10, 2001
DWQ # 011206
COE# 200120933
Soil & Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
Dear Sir or Madam:
On August 9, 2001, your application for a 404 Permit and 401 Water Quality
Certification on behalf of Research Triangle Foundation for a project in Wake County
Was forwarded to us by the;U.S. Army Corps of Engineers. Please note that you are
required to submit your request for a 401 Water Quality Certification under separate
cover to the Division of Water Quality. Also please note that beginning January 1, 1999,
the N.C. General Assembly passed legislation requiring payment of a fee for all
applications. This fee amounts to $200 for projects with less than an acre of wetland
impact and less than 150 linear feet of impacted stream. For projects with an acre or
more wetland impact or 150 feet or more of impacted stream, a fee of $475 is required.
In order for DWQ to review and process your request, you must send a check for the
appropriate amount made payable to the N.C. Division of Water Quality attached to the
applications. Also, seven copies of all application materials sent to the Corps are required
for our review.
Please call Rob Ridings at 919-733-1786 or visit our web site at
http://h2o.enr.state.nc.us/ncwetlands if you have any questions.
Sincerely,
Rob Ridings
cc: Central Files
Todd Tugwell, USACOE, Raleigh Regulatory Field Office
File Copy
Wetlands/401 Unit 2321 Crabtree Blvd. Suite 250 Raleigh, North Carolina 27604
Telephone [phone] FAX # [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post consumer paper
1. If diffuse flow is not a reasonable goal for a given site (esp. steep slope sites),
what "other BMPs" will be acceptable? We should have some idea more firmly
stated (perhaps not stated in the design specs, but something regulators can point
people toward if need be) of what is a reasonable alternative if conditions do not
permit level spreader use.
2. We are seeing level spreaders placed at the toe of steep slopes. How should we
handle this?
3. I think we would all prefer grass lined swales as bypass channels, but in
forested applications, the lack of sunlight will not allow this. We are going to
have to have a LOT of rip rap channels. Even in areas where the grass could
eventually die due to the canopy, this will be an issue.
64 4, How do we construct a cha nel in the buffer and minimize the impact?
5,. How do we "protect" the point of entry to the stream from the bypass channel?
6. In a stream system, where is the best place to discharge? Into a pool? riffle?
Bend? This is something that should be looked at when reviewing plans, making
sure we don't just discharge anywhere.
7. What do we do if the level spreader discharge begins to erode in the buffer or
erodes the stream bank? What type of permitting will be required for people to go
back into the buffer and fix problems? what amount of work will require such a
permit?
8. Bypass structures can be built to minimize sediment accumulation. It is
important to analyze this when reviewing plans.
9. In the Coastal Plan, we generally have roadside ditches discharging to level
spreaders. However, DOT guidelines prohibit backing water up in these ditches.
44
DEPARTMENT OF THE ARMY
WILMINGTON DISTRICT, CORPS OF ENGINEERS
P.O. BOX 1890
WILMINGTON, NORTH CAROLINA 28402-1890
IN REPLY REFER TO
August 30, 2001
Regulatory Division
Action ID No. 200021487
Mr. Mike Ortosky
Soil and Environmental Consultants
11010 Raven Ridge Road
Raleigh, North Carolina 27614
Dear Mr. Ortosky:
Reference is made to th ount V o i atio Prospectus
dated June 2000, submitted with your letter of June 23, 2000. The proposed bank is located
north of SR 1134, adjacent to an unnamed tributary of Tick Creek, 4.5 miles south of Siler City,
in Chatham County, North Carolina. The Mitigation Bank Review Team was assembled and met
to review the proposal on November 28, 2000.
Based upon our telephone conversation of August 28, 2001, it is my understanding that
the owner of the property now intends to make the entire site available to a third party for use as
compensatory mitigation for a future permit request. Based upon this, your client no longer
wishes to pursue bank approval and is withdrawing his request. Accordingly, your mitigation
bank is hereby retired from further consideration.
Should you have any questions regarding your project, or the federal mitigation banking
procedures, please contact me at the Raleigh Field Office, Regulatory Division, telephone (919)
876-8441, extension 22.
Sincerely,
a
2pp1
Q
S? SOS
S. Kenneth Jolly NG
Chief, Raleigh Regulatory
Field Office

V
Copies Furnished:
Mr. Jeff Jurek
Wetlands Restoration Program
NC Division of Water Quality
1619 Mail Service Center
Raleigh, North Carolina 27699-1619
Dr. Garland B. Pardue
Ecological Services Supervisor
U.S. Fish and Wildlife Service
Post Office Box 33726
Raleigh, North Carolina 27636-3726
Ms. Cherry Green
Federal Permits Coordinator
U.S. Fish and Wildlife Service
Ecological Services
1875 Century Boulevard, Suite 200
Atlanta, Georgia 30345
Mrs. Kathy Matthews
U.S. Environmental Protection Agency
980 College Station Road
Athens, Georgia 30605
Mr. Frank McBride
North Carolina Wildlife Resources Commission
1721 Mail Service Center
Raleigh, North Carolina 27699-1721
Ms. Danielle Pender
North Carolina Wildlife Resources Commission
1142 I-85 Service Road
Creedmore, North Carolina 27522
2
O??F w A TF9pG _ Michael F. Easley
Governor
r William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Dr. Gregory Thorpe, Acting Director
Division of Water Quality
October 29, 2001
Mr. Peter Jelenevsky
Soil and Environmental Consultants
11010 Raven Ridge Road
Raleigh, NC 27614
Subject: Mt. Vernon Springs Stream and Wetland Mitigation Plan.
Dear Mr. Jelenevsky:
Thank you for providing a copy of the Mt. Vernon Springs Stream and Wetland Mitigation
Plan. This plan outlines the activities that will be implemented to compensate for impacts
associated with a Research Triangle Park Foundation project (DWQ No. 01-1206). Comments
on this mitigation plan have been received from the NC Wetlands Restoration Program and are
included in this letter.
Overall the plan is very well written and addresses both stream restoration and wetland
restoration. Considerable details are provided to support the plans for stream restoration, but
additional details are needed for the wetland restoration/creation component of the plan.
The plan does not discuss the amount of wetland impacts at the Research Triangle Park
and whether the planned wetland creation component (approximately 7 acres) of the mitigation
plan will compensate for some of these impacts. Clearly a strong case can be made for
successful wetland restoration on the approximately 7.5 acres of hydric soils. However, there is
.insufficient evidence that "systematically back filling the inter-field ditches to match the adjacent
flood plain elevation ...the 7.0 near-hydric soil area will be restored as a bottomland
hardwood/swamp forest wetland." If planned wetland impacts exceed 7.5 acres, then we need
further assurances that the 7 acres of wetland creation will be successful.
Finding and obtaining data from a_reference_site will assist-in determining success. -Data:
from the monitoring wellsshould have been included in the plan, and would help support the
concept that stream restoration and ditch-filling will truly restore wetland hydrology.
The-tree and herbaceous species to be established are all good. One ancillary comment
is that we normally discourage the establishment of nitrogen fixing species (e.g. alder) along -
Nutrient Sensitive Waters. ;However this does not apply to this plan since Tick Creek is
classified as Class C. ".
North Carolina Division of Water Quality; Wetlands/401 Unit -
NCDENR 1650 Mail Service Center, Raleigh, NC 27699-1650
2321 Crabtree Blvd., Raleigh, NC 27604-2260
Telephone: [phone]; Fax [phone]
httpJ/h2o.enr.state.nc.ustncwetlands
As Built Report
Mt. Vernon Springs Mitigation Site-Phase I

r-'
r?,y
June 21, 2002
Prepared by:
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com

lca"Awk.- Vl ?Vlllt.lll,?7
NARRATIVE
0 !1
y
Jul M 2 1
"AS BUILT"
LONGITUDINAL PROFILE
MONITORING CROSS-SECTIONS

Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
Mr. Todd Tugwell 21 June 2002
U.S. Army Corps of Engineers
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Suite 120
Raleigh, North Carolina 27615
Re: Research Triangle Foundation, Action ID No. 200120436 & 200120437. "As-Built" Mt.
Vernon Springs Stream and Wetland Mitigation Plan-Phase I.
Dear Mr. Tugwell,
The purpose of this letter is to provide you with the "as built" report of the Phase I restoration
work completed at the Mt. Vernon Springs Mitigation Site located in Chatham County, North
Carolina. This restoration work provides compensatory mitigation credit for the stream channel
impacts resulting from the completion of the Louis Stephens Drive project located in Research
Triangle Park, North Carolina.
Due to permit delays related to the Individual Permit, Action ID No. 200120933, the originally
designed mitigation project was divided into two phases so that the current impacts related to the
Louis Stephen Drive could be off-set. Based on the originally submitted design and construction
sequencing over 4,500 linear feet of stream restoration, 7.5 acres of wetland restoration and
approximately 7 acres of wetland creation would have been constructed simultaneously. Since
only the Nationwide 14 had been issued, the project was modified to meet the current mitigation
requirements of 768 linear feet of stream restoration. As a result of the mitigation requirements
and site and design constraints, 918 linear feet of stream channel was restored and 160 feet of
stream channel was enhanced and approximately 0.3 acres of wetland-vernal pool habitat was
created. The temporary connection between the restored channel and the original channel (station
0+00 to 1+69) was not included in the restoration total, since following the completion of Phase
11 this section will be backfilled. Approximately 150 linear feet of stream restoration and 160
linear feet of stream enhancement and 0.3 acres of wetland creation credit remain following the
implementation of Phase I.
The project construction initiated on 11 February 2002 and was completed including all plantings
and seeding by March 1, 2002. Bottomland hardwood bare-root seedlings were planted adjacent
to the restored stream on approximate 10-foot centers. The planted riparian zone was, at a
minimum, 50 feet wide along the eastern edge of the channel. The majority of the planted
riparian zone along the western edge of the channel exceeds a 50-foot width and extends to the
property line demarcated by a barbed wire fence. Species planted include river birch (Betula
nigra), American sycamore (Platanus occidentalis), swamp chestnut oak (Quercus michauxii),
and green ash (Fraxinus pennsylvanica).
Following the completion of the stream restoration work the channel was lined with C177 coir
mattine and stapled in Dlace. A seed mix was aDDlied and live stakes were installed. Seed mix
Charlotte Office: Greensboro Office: Hickory Office:
PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
consisted of switch grass (Panicum virgatum), deer tongue (Panicum clandestinum), rye grain,
and fescue. The latter two species were seeded to provide temporary cover and stabilize the
graded flood plain and stream channel. Live stakes consisted primarily of black willow (Salix
nigra), which was predominately harvested on the site, and silky dogwood (Corpus amomum).
Transplants that were located along the original channel consisted of green ash, tag alder, and
American sycamore. Transplants varied in size from 2-6-inches in diameter and 4 to 25 feet tall.
A near bankfull event, approximately 6 inches below bankfull, was experienced the week of
March 17`h, 2002. A digital photograph has been enclosed, which was taken approximately 12
hours after the storm event. Following the storm event, in-stream grade control structures and the
stream channel were inspected. Based on the field observations the restored stream reach
remained intact and stable. Deposition was evident on the inside of meander bends and on the
upper sections of the boulder cross-vanes. This indicates that the channel is performing as it
should in a natural un-constructed state (reference reach condition). As time elapses and
additional bankfull events occur the constructed channel should become narrower as sediment is
deposited along the banks and vegetation begins to emerge and propagate. Vegetation within the
bankfull channel will increase the roughness coefficient, thereby slowing down storm water flows
allowing sediment to drop out of suspension and deposit or build up the banks. Although the
width should become narrower, channel depth and slope should remain relatively constant over
time.
Modifications to the plan were also completed during the construction phase because of physical
properties of the site or unforeseen constraints. Two of the boulder cross-vanes were not installed
at station 9+63 or 11+73. These areas contained bedrock, which is an excellent and permanent
form of grade control; therefore cross-vanes were not installed. Station 9+63 has also been
selected as a monitoring cross-section; so long term stability can be evaluated.
The "As Built" report consists of this narrative, the longitudinal profile, representative cross-
section profiles, constructed stream channel alignment, vernal pool creation location map and
photographs. The longitudinal profile data will be used as a baseline to determine the long term
channel stability when compared to future monitoring reports. Monitoring cross-sections have
been selected and are permanently identified in the field with iron pins. These cross-sections
consist of two nested pairs made up of a riffle and pool segment. Each cross-section has been
located utilizing a Trimble GPS unit. The coordinates of the cross-sections are provided on the
plan view of the "As Built" figure enclosed. The constructed channel alignment (plan view) was
also located with a Trimble GPS and that information was laid on top of the proposed alignment
as depicted on Sheet 1 for comparison purposes. The vernal pool areas created utilizing the
original channel have also been located and the areas calculated in AutoCAD. Total area created
is approximately 0.30-acre. Photographs will also be taken annually at each monitored cross-
section. Please note that this acreage was not required to off-set any compensatory mitigation
requirements.
Stream channel and vegetative monitoring reports will be provided to the USACE every other
year starting a year after implementation. Monitoring reports will be completed for years 1, 3,
and 5. Information will include the longitudinal profile, cross-sectional data, vegetation sampling
data, photographs, and remediation plans if required. Surveys will be completed from July-
September.
Following the submittal of the monitoring reports to the appropriate agency representatives, the
recipients of the report will be contacted for the purpose of discussing the monitoring data,
required success criteria and whether or not the site is functioning as expected. If the site is not
functioning as expected a site visit will be scheduled with the review agencies so that a
remediation plan can be created and implemented. The remediation plans, if required, will
directly reflect the requested alterations suggested by the regulatory agencies.
If you have any question regarding the as built report please contact me at 919-846-5900 ext. 21
or at my new mobile number 919-280-0603. My e-mail address is [e-mail].
Sincerely,
Soil & Environmental Consultants, PA
Peter A. Jelene
Stream Restoration Specialist
Enclosures: (2) copies of the "As Built" Plans of the Mt. Vernon Springs Stream and Wetland
Mitigation Plan-Phase I.
Copies: John Dorney, DWQ-Wetlands/401 Unit

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Riffle Mt. Vernon Springs
520
519
518
= 517
w 516
515
514

-
_
L _LI-1J
_ _ _
LL
1 1 L L

1-i-'.-'-
r
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r
r i -
1 1 1 _1
I I L
I I_
I-1-1-I -1+14i- -1-1-1 -! -L+1-1- 1-1-I-1-
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Width from River Left to Right (ft)
section:.-
Riffle
Mt. Vernon Springs
Cape Fear River Basin
description: !N'1-4;7-
height of instrument (ft): 3.= ?•
omit distance FS
notes pt. (ft) (ft) elevation
516.7
4• -` 516.9
516.86
r.. L , 516.77
516.79
J =? < - 516.87
515.61
k 514.67
;`'' & • 514.61

514.4
514.28
€ . :. 4 514.4
514.33
V- -I: 514.47
514.5
x: 514.97
. .u*.p 515.26
(:.I.! =. 516.03
t = 516.81
T + 516.95
516.77
516.98
517.05
r h,: 516.82
't 4t 516.63
:. _ - 516.58
c '' ) ` ` rye 516.49
FS FS W fpa
bankfull top of bank (ft)

516.87 516.87

channel Manning's
slope (%) ''n"
dimensions
28.2 x-section area 1.8 d mean
16.1 width 17.3 wet P
2.6 d max 1.6 hyd radi
2.6 bank ht 9.2 w/d ratio
300.0 W flood prone area 18.6 ent ratio
hydraulics
3.7 velocity (ftisec)
104.1 discharge rate, Q (cfs)
0.36 shear stress ((Ibs/ft sq)
0.43 shear velocity (ft/sec)
1.411 unit stream power (lbs/ft/sec)
0.24 Froude number
8.6 friction factor u/u`
21.0 threshold grain size (mm)
check from channel material
34 measured D84 (mm)
15.9 relative roughness 9.7 f0c. factor
0.029 Mannin 's n from channel material
Pool Mt. Vernon Springs
518
517
516
U' 514
513
U 1L
J1'it41"D
37.1
17.1
4.3
4.3
A 9
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512
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Width from River Left to Right (ft)
Mt. Vernon Springs
Cage Fear River Basin
517.26
517.35
517.44
517.29
516.97
516.76
516.74
515.6
514.83
514.58
512.68
512.57
512.4
512.64
513.2
513.7
514
516.47
516.66
516.54
516.44
516.62
516.56
516.58
516.66 1 516.66
01
veloci "' (ft/sec)_
37.1
17.1
4.3
4.3
A 9
x -section area
width I
d max,
bank.ht
W flood prone area
2.2
19.7
1.9
7.9
A A
d'mean
wet P.
hyd'radi
wld ratio
e.nt ratio
A:A
A 0
0.41
veloci "' (ft/sec)_
discharge rate,Q cfs ..
shearstress` (Ibslfts'q)
0.46
AAAA
LFroude,number
7rain
shear veloci ft/sec)
unit stream, power (Ibslft/sec),;
Mannin 's In from channel materia
friction factor u/u*
threshold size min'
e; f
1 a�ej� t r� .,� I a," .
34
measured D84 rpm)
4-9:-7
relative roughness 40-.2 fric. factor
A.M
Mannin 's In from channel materia

Riffle Mt. Vernon Springs
520
519
518
x 517
516
w 515
514
513
512
-
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1-Ij? r1-_1-1 +r 1-11 I_, + rl-: I I
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1-1-37
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0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Width from River Left to Right (ft)
section
Riffle
Mt. Vernon Springs
Cape Fear River Basin
height of instrument (ft):

notes omit
pt distance
(ft) FS
(ft)
elevation
t a.:>-: _ 471r;7, 515.83
o.,::.. t J ;,VjI 515.72
515.66
515.85
A mgt '?.? 516.02
• .<?? "s C 515.87
515.73
e-i? # 515.35
513.63
513.24
513.07
512.91
1 r 512.86
#N# r ?i' 512.86
r <f: y 512.89
! ?# :..*yr -.?:1r•t: 513.05

- 513.16
fix h y.? < 513.32
513.67
re y"E' 513.97
< .F;: r*p! 514.47
safe=' # f 1! r 515.1
f, 4.r 515.39
515.58
515.74
515.91
515.72
'`o:i ## E: <aaf.:- 515.7
515.61
FS FS W fpa
bankfuli top of bank (ft)

5515.87

channel Manning's
lope (%) °n"
dimensions
29.1 x-section area 1.5 d mean
19.0 width 20.3 wet P
3.0 d max 1.4 hyd radi
3.0 bank ht 12.4 w/d ratio
300.0 W flood prone area 15.8 ent ratio
hydraulics
3.4 velocity (fUsec
98.4 discharge rate, Q (cfs)
0.31 shear stress (Ibs/ft sq)
0.40 shear velocity (ft/sec)
1.132 unit stream power Ibs/ft/sec)
0.23 Froude number
8.4
L friction factor uW
.
18.2 threshold rain size mm
check from channel material
34 measured D84 (mm)
E
13.9 relative roughness 9.3 fric. factor
0.030 Mannin 's n from channel -njaterial
517
516
., 515
c
514
is
_N
w 513
512
511
Pool Mt. Vernon Springs
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0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Width from River Left to Right (ft)
Mt. Vernon Springs
Cape Fear River Basin
515.52
515.39
515.61
515.78
515.6
515.28
513.89
512.48
511.84
511.39
511.47
511.41
511.33
511.59
512.3
514.37
515.02
515.53
515.62
A
515.62
d_it etsioras���.
g..
�..,
44.9 x -section area
19.1 width
4.3 d `max
4.3 bank ht
8 9 W flood `tone area
2.3
21.5
2.1
8r4
8 8
d mean
wet P
hyd radi, .'
w/d ratio
ent ratio -
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As Built Report
Mt. Vernon Springs Mitigation Site-Phase I
d
d _ \
June 21, 2002
Prepared by:
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
• NARRATIVE
"AS BUILT"
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Jet; JUN f
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MONITORING CROSS-SECTIONS
ro PHOTOGRAPHS
PEBBLE COUNT

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•
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Environmental Consultants, PA
Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
Mr. Todd Tugwell 21 June 2002
U.S. Army Corps of Engineers
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Suite 120
Raleigh, North Carolina 27615
Re: Research Triangle Foundation, Action ID No. 200120436 & 200120437. "As-Built" Mt.
Vernon Springs Stream and Wetland Mitigation Plan-Phase I.
Dear Mr. Tugwell,
The purpose of this letter is to provide you with the "as built" report of the Phase I restoration
work completed at the Mt. Vernon Springs Mitigation Site located in Chatham County, North
Carolina. This restoration work provides compensatory mitigation credit for the stream channel
impacts resulting from the completion of the Louis Stephens Drive project located in Research
Triangle Park, North Carolina.
Due to permit delays related to the Individual Permit, Action ID No. 200120933, the originally
designed mitigation project was divided into two phases so that the current impacts related to the
Louis Stephen Drive could be off-set. Based on the originally submitted design and construction
sequencing over 4,500 linear feet of stream restoration, 7.5 acres of wetland restoration and
approximately 7 acres of wetland creation would have been constructed simultaneously. Since
only the Nationwide 14 had been issued, the project was modified to meet the current mitigation
requirements of 768 linear feet of stream restoration. As a result of the mitigation requirements
and site and design constraints, 918 linear feet of stream channel was restored and 160 feet of
stream channel was enhanced and approximately 0.3 acres of wetland-vernal pool habitat was
created. The temporary connection between the restored channel and the original channel (station
0+00 to 1+69) was not included in the restoration total, since following the completion of Phase
II this section will be backfilled. Approximately 150 linear feet of stream restoration and 160
linear feet of stream enhancement and 0.3 acres of wetland creation credit remain following the
implementation of Phase 1.
The project construction initiated on 11 February 2002 and was completed including all plantings
and seeding by March 1, 2002. Bottomland hardwood bare-root seedlings were planted adjacent
to the restored stream on approximate 10-foot centers. The planted riparian zone was, at a
minimum, 50 feet wide along the eastern edge of the channel. The majority of the planted
riparian zone along the western edge of the channel exceeds a 50-foot width and extends to the
property line demarcated by a barbed wire fence. Species planted include river birch (Betula
nigra), American sycamore (Platanus occidentalis), swamp chestnut oak (Quercus michauxii),
and green ash (Fraxinus pennsylvanica).
Following the completion of the stream restoration work the channel was lined with CF7 coir
matting and stapled in Dlace. A seed mix was aDDlied and live stakes were installed. Seed mix
Charlotte Office: Greensboro Office: Hickory Office:
PMB 291, 3020-I Prosperity Church Road 3817-E Lawndale Drive 910 Boston Road
Charlotte, NC 28269-7197 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
consisted of switch grass (Panicum virgatum), deer tongue (Panicum clandestinum), rye grain,
and fescue. The latter two species were seeded to provide temporary cover and stabilize the
graded flood plain and stream channel. Live stakes consisted primarily of black willow (Salix
nigra), which was predominately harvested on the site, and silky dogwood (Cornus amomum).
Transplants that were located along the original channel consisted of green ash, tag alder, and
American sycamore. Transplants varied in size from 2-6-inches in diameter and 4 to 25 feet tall.
A near bankfull event, approximately 6 inches below bankfull, was experienced the week of
March 17`h, 2002. A digital photograph has been enclosed, which was taken approximately 12
hours after the storm event. Following the storm event, in-stream grade control structures and the
stream channel were inspected. Based on the field observations the restored stream reach
remained intact and stable. Deposition was evident on the inside of meander bends and on the
upper sections of the boulder cross-vanes. This indicates that the channel is performing as it
should in a natural un-constructed state (reference reach condition). As time elapses and
additional bankfull events occur the constructed channel should become narrower as sediment is
deposited along the banks and vegetation begins to emerge and propagate. Vegetation within the
bankfull channel will increase the roughness coefficient, thereby slowing down storm water flows
allowing sediment to drop out of suspension and deposit or build up the banks. Although the
width should become narrower, channel depth and slope should remain relatively constant over
time.
Modifications to the plan were also completed during the construction phase because of physical
properties of the site or unforeseen constraints. Two of the boulder cross-vanes were not installed
at station 9+63 or 11+73. These areas contained bedrock, which is an excellent and permanent
form of grade control; therefore cross-vanes were not installed. Station 9+63 has also been
selected as a monitoring cross-section; so long term stability can be evaluated.
The "As Built" report consists of this narrative, the longitudinal profile, representative cross-
section profiles, constructed stream channel alignment, vernal pool creation location map and
photographs. The longitudinal profile data will be used as a baseline to determine the long term
channel stability when compared to future monitoring reports. Monitoring cross-sections have
been selected and are permanently identified in the field with iron pins. These cross-sections
consist of two nested pairs made up of a riffle and pool segment. Each cross-section has been
located utilizing a Trimble GPS unit. The coordinates of the cross-sections are provided on the
plan view of the "As Built" figure enclosed. The constructed channel alignment (plan view) was
also located with a Trimble GPS and that information was laid on top of the proposed alignment
as depicted on Sheet 1 for comparison purposes. The vernal pool areas created utilizing the
original channel have also been located and the areas calculated in AutoCAD. Total area created
is approximately 0.30-acre. Photographs will also be taken annually at each monitored cross-
section. Please note that this acreage was not required to off-set any compensatory mitigation
requirements.
Stream channel and vegetative monitoring reports will be provided to the USACE every other
year starting a year after implementation. Monitoring reports will be completed for years 1, 3,
and S. Information will include the longitudinal profile, cross-sectional data, vegetation sampling
data, photographs, and remediation plans if required. Surveys will be completed from July-
September.
Following the submittal of the monitoring reports to the appropriate agency representatives, the
recipients of the report will be contacted for the purpose of discussing the monitoring data,
required success criteria and whether or not the site is functioning as expected. If the site is not
functioning as expected a site visit will be scheduled with the review agencies so that a
remediation plan can be created and implemented. The remediation plans, if required, will
directly reflect the requested alterations suggested by the regulatory agencies.
If you have any question regarding the as built report please contact me at 919-846-5900 ext. 21
or at my new mobile number 919-280-0603. My e-mail address is [e-mail].
Sincerely,
Soil & Environmental Consultants, PA
Peter A. Jelene
Stream Restoration Specialist
Enclosures: (2) copies of the "As Built" Plans of the Mt. Vernon Springs Stream and Wetland
Mitigation Plan-Phase I.
Copies: John Dorney, DWQ-Wetlands/401 Unit
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Riffle
Mt. Vernon Springs
Caoe Fear River Basin
height of ins
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516.77
516.79
516.87
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514.67
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516.95
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516.58
516.49
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16.1 width 17.3 wet P
2.6 d max 1.6 hyd radi
2.6 bank ht 9.2 w/d ratio
300.0 W flood prone area 18.6 ent ratio
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3.7 velocity (ft/sec)
104.1 discharge rate, Q (cfs)
0.36 shear stress ((Ibs/ft sq)
0.43 shear velocity (fUsec)
1.411 unit stream power (lbs/fUsec)
0.24 Froude number
8.6 friction factor u/u'
21.0 threshold grain size (mm)
check from channel material
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Mt. Vernon Springs
Cape Fear River Basin
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513.4
512.68
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0.41 shear stress ((lbs/ft sq)
0.46 shear velocity (ft/sec)
9:989 unit stream power (lbs/ft/sec)
8:98 Froude number
8 9 friction factor u/u*
24.8 threshold rain size (mm
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34 measured D84 (mm)
9 7 relative roughness X0,2 Eric. factor

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513.63
513.24
513.07
512.91
512.86
512.86
512.89
513.05
513.16
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515.1
515.39
515.58
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19.0 width 20.3 wet P
3.0 d max 1.4 hyd radi
3.0 bank ht 12.4 w/d ratio
300.0 W flood prone area 15.8 ent ratio
hydraulics
3.4 velocity (ft/sec)
98.4 discharge rate, Q (cfs)
0.31 shear stress ((Ibs/ft sq)
0.40 shear velocity (ft/sec)
1.132 unit stream power (lbs/ft/sec)
0.23 Froude number
8.4 friction factor u/u'
18.2 threshold rain size (mm)
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13-? relative roughness 93 fric. `actor

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Width from River Left to Right (ft)
517
516
515
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512
511
Pool
Mt. Vernon Springs
Cape Fear River Basin
description:
height of instrument (ft):
omit distance FS FS FS W fpa channel Manning's
notes pt. (ft) (ft) elevation bankfull top of bank (ft) slope (%) "n"
515.52
515.39
515.61
515.78
515.6
515.28
513.24
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4 511.84
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511.47
511.41
u 511.33
511.59

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= 515.02
T 515.53
515.62
515.59
515.88
515.83
515.85
515.62 51
dimensions
44.9 x-section area 22 d mean
19.1 width 21.5 wet P
4.3 d max 2.1 hyd radi
4.3 bank ht 8-4 w/d ratio
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hydraulics
GA velocity (ft/sec)
9 0 discharge rate, Q (cfs)
0.46 shear stress ((Ibs/ft sq)
0.48 shear velocity (ft/sec)
0.009 unit stream power (lbs/ft/sec)
0-.00 Froude number
0 8 friction factor u/u'
27.7 threshold rain size (mm
check from channel materia
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213 relative roughness 4,,) 4 fric. factor
0 _J?2?D Manning's n from c era
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14 July 2003

RAD8/ 4,01 n®vF
JUL 1 4 2003
Mr. Todd Tugwell Mr. John DAWERQUALI S "I
U. S. Army Corps of Engineers DENR
Raleigh Regulatory Field Office Division of Water Quality
6508 Falls of the Neuse Road, Suite 120 F) 2321 Crabtree Blvd., Suite 205
Raleigh, North Carolina 27615 'v Raleigh, North Carolina
27604
Re: Research Triangle Foundation, Action ID No. 200120436 & 200120437. Year 1
Monitoring Findings Report: Mt. Vernon Springs Mitigation Site-Phase I.
Dear Mr. Tugwell,
Attached to this letter is the Year 1 Monitoring report for the Mt. Vernon Springs-Phase I
Mitigation Site located in Chatham County, North Carolina. This restoration work
provides.compensatory mitigation credit for the stream channel impacts resulting from
the completion of the Louis Stephens Drive project located in Research Tri angle Park,
North Carolina.
Due to permit delays related to the Individual Permit process, Action ID No. 200120933,
the originally designed mitigation project was divided into two phases so that the current
impacts relative to the construction of Louis Stephen Drive (Action ID Numbers
200120436 & 200120437) could be off-set. Therefore, only a portion of the'originally
proposed mitigation project was constructed although it exceeded the permit mitigation
requirements and consisted solely of stream restoration. Mitigation requirements
included the restoration of 768 linear feet of stream channel. Total stream length restored
consisted of 1,132 linear feet, resulting in a surplus of 364 linear feet of stream channel,
which will be applied to future RTF approved and permitted impacts.
LThe monitoring report includes the findings report, revised copy of the as-built plan view
izing total station technology), permanently monitored cross-section plots,
itudinalprofile, pebble count, and photographic documentation.
As discussed in the findings report, no departures in bed form and pattern were observed
relative to the as-built survey despite the numerous bankfull events that have occurred
this past winter/spr .season,.._A1soespite he drought of summer 2002, nanarand
b-a°ntc vegetation is doing remarkable well with an abundance of volunteer species
dominating the Phase I area.
Charlotte Office: Greensboro Office: Hickory Office:
236 LePhillip Court, Suite C 3817-E Lawndale Drive 622 Coon Mountain Lane
Concord, NC 28025 Greensboro, NC 27455 Taylorsville, NC 28681
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]

Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
A r?RQc
r
Mr. Peter A. Jelenevsky
Soil and Environmental Consultants, PA
11010 Raven Ridge Road
Raleigh, North Carolina 27614
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan Klimek, Director
Division of Water Quality
4 August, 2003 7
v?
C?`
Regarding: Year one Monitoring Report
Mt. Vernon Springs Mitigation Project
Chatham County
Dear Mr. Jelenevsky,
Thank you for submitting this document and data as required for 401 certification for compensatory mitigation
*f the Louis Stephens Drive project in Research Triangle Park. As you note in your 14 July 2003 submittal, this
report includes a revised copy of the as-built plan view, cross-section plots, longitudinal profile, pebble count,
and photographic documentation. These data suggest that the project, at this point, is meeting success criteria.
It should be noted that in#l future iterations of this review that all benthic macroinvertebrate information also
be included in the summary. These data were collected by your staff on July 12, 2002 but not summarized in
this report.
We look forward to working with you on this project.
Sincerely,
John Dorney
CC: File Copy
Todd St. John and Dave Penrose, Wetlands 401 Certification Unit.
Steve Mitchell, Raleigh Regional Office
WbE-Nft
North Carolina Division of Water Quality; Wetlands/401 Unit
1650 Mail Service Center; Raleigh, NC 27699-1650
2321 Crabtree Blvd., Raleigh, NC 27604-2260
Telephone: [phone]; Fax: [phone]
http://h2o. en r. state. nc. ustncwetl and s
If you have questions regarding the submitted monitoring report, I can be contacted at
919-846-5900 (office), 919-280-0603 (mobile) or by e-mail at [e-mail].
Sincerely,
Soil & Environmental Consultants, PA
Peter A.
Stream 1
Enclosures: Year I Monitoring Report: Mt. Vernon Springs Mitigation Site-Phase I.
Copy: John Dorney,, DWQ-Wetlands/401 Unit
WETLANDS1401 GR®Up
JUL 14 2003
Year 1 Monitoring Report WATERQUALITYSECTION
Mt. Vernon Springs Mitigation Site-Phase I
July 11, 2003
Prepared by:
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
Mt. Vernon Springs-Phase I
Year 1 Monitoring Report
Introduction
' Soil & Environmental Consultants, PA (S&EC) has completed the year 1 monitoring of the Mt.
Vernon Springs Mitigation Site, located approximately 4 miles south of Siler City and 2 miles
west of Highway 421, Chatham County, North Carolina. Monitoring data was collected on June
' 26 and 27, 2003. The Action ID Numbers for this project are 200120436 & 200120437. To
review, the project construction initiated on 11 February 2002 and was completed by March 1,
2002, so the stream has been on line, for 17 months. The stream has experienced approximately
' 6 or more bankfull events, the majority occurring winter/spring 2003, since construction
implementation was complete.
' Data collected during the field reconnaissance included the survey of the entire length of
longitudinal channel profile, four permanently established channel cross-sections, pebble count
data, and photographs. Overall channel conditions (bed and bank) and in-channel structures,
' which included boulder cross-vanes and root wads, were inspected during the channel survey to
insure proper function and stability. Extreme detail was employed to replicate previously
collected data compiled during the as-built survey. Permanently established vegetation plots will
' be setup following the completion of Phase II since the monitoring schedule for Phase I will be
altered to match that of Phase II.
' Year 1 geomorphic data collected was plotted in color along with the as-built for comparison
purposes. Some adjustment was required of the as-built longitudinal data because the stream has
modestly increased in length as the thalweg has adjusted and become equalized.
1
Methodology
' The as-built was completed utilizing a laser level, rod, laser sensor, 300-foot tape, and a
Trimble® GPS unit. Although this aforementioned equipment is acceptable considering the
' application, to increase accuracy and efficiency, S&EC is now utilizing total station technology,
which identifies and records the northing, easting, and elevation (x, y, z coordinates) of each
survey point taken in the field. As a result there are some minor changes to the original as-built.
' The longitudinal profile was survey by starting immediately above the origination point of the
stream restoration and continued to the project terminus depicted by the culverts that feed the
t stream under Mt. Vernon Springs Road. The thalweg was surveyed inclusive of all observed
transitional areas including riffles, runs, pools and glides and installed rock cross-vanes. Cross-
vanes were utilized as permanent bench marks when the two surveys were compared and
' horizontal (length) adjustments to the as-built profile were made based on the relative locations if
each cross-vane. The channel length between the as-built and year 1 survey only differed by
approximately 50 feet.
t

Cross-section pins established during the as-built were located using the as-built plan sheet and a
metal detector. Once the pins were located a 100-foot tape was stretch between them for
orientation purposes and to insure an accurate reproduction of the original cross-section profile.
Pebble count data was taken from each cross-section in a random pattern to avoid recording
individual substrate more than once. Data was collected in the immediate vicinity of the cross-
section and completed within the specific bed feature (i.e. riffle or pool) that the cross-section
profile was taken.
Channel Morphology & Channel Stability
Based on visual observations of the stream channel and in-channel structures completed during
the collection of the stream data followed by the comparative analysis of the year 1 and as-built
data sets, the restored channel reach is apparently relatively stable and exhibited very little
departure (vertical or horizontal) from the as-built conditions. All of the cross-vanes and root
wads were functioning properly and there was no evidence of erosion, headcutting, or structure
piping. In fact, as predicted in the as built report, the channel is becoming predominately
narrower because sediment is being deposited along the bank and in some cases obscuring the
arms of several of the boulder cross-vanes. This is the direct result of increased roughness
associated with the propagation of vegetation within the bankfull channel.
Vegetation
' Planted zones relative to the stream restoration consisted of the riparian zone, which initiates at
the top of the bank and continues perpendicular to the stream with a minimum width of 50-feet
and the bankfull channel area initiating at the base flow elevation continuing to the top of bank.

0

The planted riparian zone relative to Phase I, although not required, was extended to the property
lines east and west of the channel alignment excluding Phase II construction access and
earthwork areas. Areas where soil disturbance occurred and the original vegetation was removed
(i.e. fescue) as a result of the construction procedures, planted bare root seedlings did fairly well
despite the drought of 2002. Bare root seedling did poorly in fescue dominated zones. As a
result of this obvious discrepancy, fescue dominated areas located adjacent to the stream
alignment were treated with Oust® and replanted this past spring. Oust was utilized to eradicate
the fescue and is active for 2 years. This extended period of time should promote the
establishment of the replanted specimens by reducing competition.
The bankfull channel area was live staked with black willow (Salix nigra) and silky dogwood
(Cornus amomum) and seeded with switch grass (Panicum virgatum), deer tongue (Panicum
clandestinum), and rye grain. Despite the drought experienced during the summer of 2002,
stream bank vegetation is doing very well. As a result of the numerous bankfull events that
occurred this past winter and spring a large influx of volunteers have colonized within the
bankfull channel consisting primarily of rushes (Juncus spp.), Sedges (Carex spp.), spike rushes
(Eleocharis spp.), black willow, and sycamore (Platanus occidentalis). Percent cover was
estimated to be from 80-100 percent along the majority of the stream banks. Some bare spots
located along the channel bank at station 7+50 and 9+94 were observed and isolated to one side
of the channel. These two areas cumulatively consist of less then 40 linear feet. These bare

spots are apparently attributed to the rocky soil conditions observed and low fertility. These
areas will be lined with matting (CF7), limed, fertilized, and re-staked during the implementation
of Phase II scheduled for summer/fall 2003.
Only one out of the approximate 20 transplants perished following the completion of the project.
Future Monitoring
I As a direct result of the timely process associated with the Individual Permit approval, the
proposed mitigation project was divided into phases as approved by the USACE and the NC
DWQ. This was done in order to meet issued permit requirements associated with the
I construction of Louis Stephens Drive at RTP. An approved modification of the originally
submitted mitigation design consisted of constructing a shorter segment of the proposed stream
restoration denoted as Phase I.
The stream channel monitoring schedule, as outlined in the approved mitigation plan, is to be
completed every other year for 5 consecutive starting one year after the completion of
construction. Therefore, stream monitoring will be completed the 1St, 3ra, and 5`" year. As a
result of the project phasing the monitoring schedule would have been skewed and data would
have been collected on opposing years relative to Phase I and II. However, base on verbal
agreements with the USACE personnel, the two will be merged following the completion of
Phase II. Therefore, the continuance of the Phase I stream channel monitoring will not resume
until year 3 monitoring is schedule for Phase II. As a result Phase I will be surveyed three times
within a six year period consisting of year 1, year 4, and year 6 data.
Vegetation monitoring associated with the riparian and wetland restoration/creation for both
phases will initiate following the completion of Phase II and will be completed annually for 5
consecutive years. Compiled data, photographs and a findings report will be issued biannually
along with the stream channel data.
r Benthic Monitoring will initiate one year after Phase II is complete and will continue annually
r' until year 3 as verbally agreed upon with NC DWQ staff.
Ground water hydrology within the wetland restoration/creation areas will be monitored daily for
5 consecutive years utilizing automated data loggers. Data loggers will be downloaded and
maintained at leas ou times during the growing season and once during the winter months.
Ice
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Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
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Project:
MOUNT VERNON SPRINGS ProlectNo.: G38201
Designed: Drawn:
MITIGATION 51TE PAJ LGT
Location: clleot: RESEARCH TRIANGLE Scale:
CHATHAM COUNTY, NC FOUNDATION "=100
5 eat Title: Sheet No.:
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September 7, 2004
Environmental Consultants, PA
Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
Mr. Todd Tugwell
USACE
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Suite 120
Raleigh, North Carolina 27615
Mr. John Dorney
NC Division of Water Quality
401 Wetlands Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Re: Mt. Vernon Springs Stream and Wetland Mitigation Project-Phase II, Chatham
County, Siler City, North Carolina.
As-Built Report and Record Drawings. INETLA
NDS / 401 GROUP
S&EC Project No. 6382.
Dear Mr. Tugwell and Mr. Dorney,
SEP 0 8 2004
WATER ,ly SECTION
I am providing you with a copy of the as-built report and drawings that represe
mitigation work completed at the Mt. Vernon Springs Mitigation Site, Siler City, North
Carolina on behalf of the Research Triangle Foundation (RTF). The purpose and need of
the project is to provide mitigation credits for stream and wetland impacts that will result
from the future expansion of Research Triangle Park. Phase II of the restoration work
satisfies the mitigation requirements as stipulated in the Individual Permit identified by
the USACE as Action ID: 200120933 and DWQ Project Number 01-1206.
Phase I of the project was utilized to satisfy compensatory mitigation requirements as
stipulated by general nationwide permits identified as Action ID: 200120436 &
200120437 and 200420081. Excess credits resulting from the completed restoration
work (Phase I & II), as preliminarily approved by the USACE and the DWQ, are to be
banked and will potentially be utilized to fulfill future compensatory mitigation
associated with future permitted impacts completed within Research Triangle Park.
As a result of the completion of Phase II of the mitigation plan, the result of
implementing the entire project has resulted in the restoration of 4,985 linear feet of
stream channel, 7.52 acres of wetland (7.52 credits), and the creation of 7.01 acres of
wetland (2.34 credits at a 3:1 ratio), and 0.35 acres of vernal pool habitat (0.11 credits at
a 3:1 ratio). It is my professional opinion that once the ground water table has had the
opportunity to equilibrate within the Phase II footprint, additional wetland creation
acreage will be discernable. Subsequently these areas will be delineated and surveyed
during the year 1 monitoring process resulting in an adjustment in the acreage of wetland
creation.
Please review the provided documentation and respond to me by letter regarding your
acceptance.
.3
If you have any questions regarding the information provided, I can be contact at 919-
846-5900 (office), 919-280-0603 or [e-mail] (e-mail).
Sincerely,
Soil & Environmental Consultants, PA
Peter Jelenevsk
Project Manag
J
Enclosures: As-built Report and Record Drawings
Copy: Liz Rooks, Research Triangle Foundation

Mt. Vernon Springs Stream and Wetland Mitigation
Site
WETLANDS 140' GRCi!p
PHASE II
August 2004
WATER QUALITY SECTION

01

Prepared by:
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Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
I
1' ¦

' Mt. Vernon Springs-Phase II
As-Built Report
' Introduction
Soil & Environmental Consultants, PA (S&EC) is providing herein the as-built survey of the
' completion of Phase II of the Mt. Vernon Springs Stream and Wetland Mitigation Plan, located
approximately 4 miles south of Siler City and 2 miles west of Highway 421, Chatham County,
North Carolina. As-built data was collected on 24, 25, 26, 27, and 28 May 2004. The Action ID
' Numbers for this project are 200120436 & 200120437 (NW 14), 200120933 (1P), and
200420081(NW 14). To review, the project construction initiated on 30 March 2004 and was
completed by 3 May 2004. Phase II added an additional 3,853 linear feet of stream channel to
the previously completed Phase I segment consisting of approximately 1,132 linear feet. Total
restored stream length on site is 4,985 linear feet. Phase II experienced a near bankfull event
about one week after completion. Water level within the channel was within 6 to 10 inches of
' the top of bank.
Survey data collected included the entire longitudinal channel profile, ten (10) permanently
' established channel cross-sections, pebble count data, and photographs. Overall channel
conditions (bed and bank) and in-channel structures, which included boulder cross-vanes and
root wads, were inspected during the channel survey to insure proper function and stability.
' Permanently established vegetation plots will be setup simultaneously with the installation of the
ground water monitoring devises scheduled for fall of 2004.
' Methodology
The as-built was completed utilizing total station technology, a segmented and calibrated rod,
and prism. This method of collection identifies and records the northing, easting, and elevation
' (x, y, z coordinates) of each survey point taken in the field.
The longitudinal profile was surveyed by starting immediately above the origination point of the
stream restoration and continued to the confluence of Phase I and II. The thalweg was surveyed
inclusive of all observed transitional areas including riffles, runs, pools and glides and installed
rock cross-vanes. Cross-vanes will be utilized in future monitoring surveys as permanent in-
stream bench marks, thereby allowing horizontal (length adjustment to be made based on the
relative location of each cross-vane.
' Permanent cross-section pins were established utilizing a section of %2-inch rebar approximately
2 to 3 foot in length driven vertically into the ground and cast within an anchor consisting of a
section of 4-inch PVC pipe anchored with concrete. The purpose of the concrete is to prevent
potential damage, removal, or vandalism ensuring horizontal and vertical control required for
future survey replication. A total of five (5) nested pairs of cross-sections were established or
ten (10) individual cross-sections. Each nested pair is made up of a riffle and pool cross-section.
' Once the concrete was allowed to setup, a 100-foot tape was stretch between the pins for
orientation purposes and the cross-section was surveyed.
1
' Pebble count data was taken from nested pair#6 in a random pattern to avoid recordation of the
same particle more than once. Data was collected in the immediate vicinity of the cross-section
' and completed within the bed feature (i.e. riffle or pool) that characterized that specific cross-
section profile.
' Vegetation
Planted zones relative to the stream restoration consisted of the riparian zone, which initiates at
the top of the bank and continues perpendicular to the stream with a minimum width of 50-feet
' and the bankfull channel area initiating at the base flow elevation continuing to the top of bank.
The planted riparian zone relative to Phase II, although not required, will be extended to the
' property lines east and west of the channel alignment and includes the wetland restoration and
creation areas. Bare root seedlings were not planted immediately after Phase II construction
t because it was an inappropriate time of year and day time temperatures exceeded normal
averages. Bare root stock will be planted in the fall of 2004. Wetland restoration areas located
to the east of the restored creek and located within the Phase II footprint were planted following
' the completion of Phase I in 2002. Wetland restoration areas located west of the new channel
alignment will be planted this fall.
' The bankfull channel area was live staked with black willow (Salix nigra) and silky dogwood
(Corpus amomum) and elderberry (Sambucus canadensis). Only 25% of the channel was live
staked due to above normal temperatures experience in May. Areas that were disturbed as a
' result of the construction activities were seeded with switch grass (Panicum virgatum), deer
tongue (Panicum clandestinum), and brown-top millet.
' Mitigation Credits
After the completion of the as-built survey of the restoration project, total accrued mitigation
credits were tabulated. Field data was gathered utilizing standardized survey practices and the
' data was subsequently quantified using AutoCADD. Quantified below is the cumulative (Phase
I and II) length of stream channel restored onsite.

Mitigation Type Total
Stream Restoration - Phase I 1,132 linear feet
Stream Restoration - Phase II 3,853 linear feet
Total Stream Length 4 985 linear feet
Wetland Restoration 1:1 replacement value 7.52 acres 7.52 credits
Wetland Creation * (3:1 replacement value 7.01 acres * 2.34 credits
Vernal Pool Creation 3:1 replacement value 0.35 acres 0.11 credits
Total Wetland Acreage 14.88 acres 9.97 credits
' * Following the completion of the year 1 monitoring, S&EC will delineate the actual acreage of created wetland
onsite and subsequently adjust the quantity. We believe that total wetland creation acreage will exceed the original
design estimate.

r_

Mitigation Allocation
' To date, three permits have been issued to the Research Triangle Foundation, which have debited
against available mitigation credits. The permits are identified by the following action ID
numbers:

Action ID Number Compensatory Stream Compensatory Wetland
Mitigation Mitigation
200120436 & 200120437 768 linear feet N/A
200420081 259 linear feet N/A
2001120933 3,308 linear feet 6.23
Total Compensatory 4,335 linear feet 6.23 (6.23 credits)
Mitigation Required
Cumulative Compensatory 4,985 linear feet 7.52 (7.52 credits) acres
Mitigation Provided by the Mt. of wetland restoration and
Vernon Springs Mitigation Site 7.36 acres of creation
2.45 credits
Remaining Available 650 linear feet 3.74 wetland credits
Mitigation Credits
' Future Monitoring
As a direct result of the timely process associated with the Individual Permit approval, the
proposed mitigation project was divided into phases as approved by the USACE and the NC
DWQ. This was done in order to meet issued permit requirements associated with the
construction of Louis Stephens Drive at RTP. An approved modification of the originally
submitted mitigation design consisted of constructing a shorter segment of the proposed stream
' restoration denoted as Phase I.
The stream channel monitoring schedule, as outlined in the approved mitigation plan, is to be
' completed every other year for 5 consecutive starting one year after the completion of
construction. Therefore, stream monitoring will be completed the 1St, 3`d, and 5d' year. As a
result of the project phasing the monitoring schedule would have been skewed and data would
' have been collected on opposing years relative to Phase I and Il. However, base on verbal
agreements with the USACE personnel, the two will be merged in the spring of 2005. Therefore,
the continuance of the Phase I stream channel monitoring will resume next year.
' Vegetation monitoring associated with the riparian and wetland restoration/creation for both
phases will initiate in spring of 2005 and will be completed annually but reported every other
' year. Compiled data, photographs and a findings report will be issued biannually along with the
stream channel data.
I Benthic Monitoring will initiate spring of 2005 and will continue annually until year 3 as
verbally agreed upon with NC DWQ staff.
1
1
1 Ground water hydrology within the wetland restoration/creation areas will be monitored daily for
5 consecutive years utilizing automated data loggers. Data loggers will be downloaded and
' maintained at least four times during the growing season and once during the winter months.
I
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RESTORATION RECORD DRAWINGS PAl EGT, MM
Soil & Environmental Consultants, PA °m CHATHAM CO., NC RESEARCH TRIANGLE FOUNDATION NO SCALE
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone] COVER CONTENTS
www.SandEC.com ' ' I OF 10
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3) CONTOURS ARE APPROXIMATE.
4) FOR CHANNEL THALWEG ELEVATIONS, REFER TO LONGITUDINAL PROFILE,
5) SEE SHEETS 3-G FOR CONSTRUCTED SITE FEATURES AND GRADING.
Soil & Environmental Consultants, PA
11010 Raven Ridge Road - Raleigh, North Carolina 27614 - Phone: [phone] - Fax: [phone]
www,Sanec,com
MT. VERNON SPRINGS - PHASE II
RESTORATION RECORD DRAWINGS
CHATHAM CO., NC RESEARCH TRIANGLE FOUND
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LEGEND
ROCK GRO55-VANE NOTES:
I ) ALL CONTOURS ARE APPROXIMATE.
2) FOR EASE OF MAP READABILITY, I' CONTOURS
END ON CHAN
O

?? ROOT WAD NEL T
P OF BANK.
3) FOR CHANNEL THALWEG ELEVATIONS, PLEASE
REFER TO LONGITUDINAL PROFILE ON SHEET 7 .

PERMANENT CROSS-SECTION
LOCATION 4) STATIONS LENGTH ANG THALWEG.
5) LOCATIONS OFOCROSS VA ESA D FOOT WADS
ARE APPROXIMATE
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PROPERTY BOUNDARY
PHASE I * II
MITIGATION TOTALS
RESTORED 7.52
WETLANDS ACRES
CREATED 7.01
WETLANDS ACRES
VERNAL POOL 0.35
' CREATION ACRES
TOTAL WETLANDS: 14.88 ACRES±
NOTE: WETLAND AND VERNAL POOL
ACREAGE TOTALS WILL NOT BE VERIFIED
UNTIL COMPLETION OF YEAR I MONITORING
DUE TO 51TE CONDITIONS.
StEC BELIEVE5 FINAL ACREAGE TOTALS
WILL EXCEED ORIGINAL DE51GN ESTIMATES.
RESTORED
STREAM CHANNEL
PHASE 1 1, 1 32 LF
PHASE II 3,853 LF
TOTAL RESTORED
STREAM CHANNEL: 4 °)Rr? I F
0
PHASE II J?
SCALE: 1" 250'
Now
250 125 0 250
CONTOU ?, 1 NTEIKVAL I '
PROPERTY BOUNDARY

,,-?W, VERNON 5PRING5
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Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
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END PHASE I
BEGIN PHASE II
6382. D4
PAJ EGT, MM
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Nt law
9 Of 10
MT. VERNON SPRINGS - PHASE 11
RESTORATION RECORD DRAWINGS
CHATHAM CO., NC RE5EARCH TRIANGLE FOUND
MITIGATION INVENTORY
PRO('ERTY BOUNDARY
SCALE: I " 200'
200 11`00 0 200
CONTOUR IN'T'ERVAL ? P
PRE-CONSTRUCTION
TOPOGRAPHY
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PROPERTY BOUNDARY
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NOTES:
I ) ORIGINAL BOUNDARY SURVEY PERFORMED BY:
SMITH $ SMITH SURVEYORS, PITTSBORO, NC ON FEBRUARY 8,200 .
ORIGINAL TOPOGRAPHIC SURVEY PERFORMED BY:
MSS LAND CONSULTANTS, LLP, RALEIGH, NC ON FEBRUARY 15, 2000.
2) TOPOGRAPHIC DATA MODIFIED t INCORPORATED INTO 51TE PLAT
USING ORIGINAL SURVEY DATA * LIMITED ENGINEERING SURVEY BY
TOTAL STATION.
3) CONTOURS ARE APPROXIMATE.
4) FOR CHANNEL THALWEG ELEVATIONS, REFER TO LONGITUDINAL PROFILE.
5) SEE SHEETS 3-G FOR CONSTRUCTED SITE FEATURES AND GRADING.
soil Sint*i?la?ftmefttsl Colsultants, PA
11010 Raves Ridge Road , Raleigh, North Carolina 27614 - Phona: [phone] - Fax: [phone]
www:sin(mccom
END PHASE I
BEGIN I MAH II
MT. VERNON SPRINGS - PHASE 11
RESTORATION RECORD DRAWINGS
CHATHAM CO., NC kENARCH TRIANGLE FOUND
PRE-CONSTRUCTION A5-5UILT
CONTOUR OVERLAY
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Mt. Vernon Springs Stream and Wetland Mitigation
Site
PHASE II
As-built Photos
May 2004

Nested Pair #3

Riffle 3-Oriented upstream of cross-section
Pool 3-Orientied upstream of cross-section
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Pool 4-Oriented downstream of cross-section
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Pool 5-Oriented upstream of cross-section
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Nested Pair #6

Riffle 6-Oriented upstream of cross-section
Pool 6-Oriented upstream of cross-section

n

Nested Pair #7
I
Riffle 7 oriented upstream of cross-section
Pool 7 - oriented upstream of cross-section
Soil & Environmental Consultants, PA
11010 Raven Ridge Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
March 1, 2006
S&EC Project No. 6382
US Army Corps of Engineers
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Ste. 120
Raleigh, North Carolina 27615
Attn: Mr. Todd Tugwell
NCDENR - DWQ
Parkview Building
2321 Crabtree Boulevard
Raleigh, North Carolina
Attn: Mr. John Dorney
Reference: Year One Monitoring Report 0 wq ''aoo11,2Ao
Mount Vernon Springs Stream and Wetland Restoration
Chatham County, NC
Dear Sirs:
Please find the enclosed Year One Monitoring Report for the above referenced site. As
you will find in the report, it is our opinion that the stream, wetland, and vegetative
components of the restoration have met the success criteria as described in the
Monitoring Plan.
Please review the enclosed document and provide any comments at your earliest
opportunity. We thank you for your assistance to date and look forward to the continued
success of this project. Please contact us if you have any questions or comments.
Sincerely,
SOIL & ENVIRONMENTAL CONSULTANTS, PA
Pa c K. Smith,
* --d
Project Manager
Attachments: Year One Monitoring Report dated February 2006
a
,I spy
a
Cc: Ms. Elizabeth Rooks, Research Triangle Park Foundation

NA
TF9
?G
June 19, 2006
Mr. Patrick Smith
S&EC
11010 Raven Ridge Rd.
Raleigh, NC 27614
i
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
Re: Mount Vernon Springs Stream and Wetland Restoration, Chatham County, NC (DWQ # 01-
1206)
Dear Mr. Smith:
DWQ has received and reviewed the, "Year One Monitoring Report for Mount Vernon Springs Stream
and Wetland Restoration, Chatham County, North Carolina, February 2006." The following comments
arose upon review of the document:
1. The hydrologic data for all 8 monitoring wells appear to meet the success criteria for year
one.
2. The vegetation monitoring should be conducted during the growing season (approximately
March 16 to October 16 according to the report). This will allow easier vegetation
identification and more accurate assessment of the health of the vegetation.
3. Tree densities for the vegetation in plots 4 and 8 are below the five year success criteria of
260 trees per acre. Plot 2 is marginally successful relative to the 320 tree per acre success
criteria established for year 3. Although the average tree density for the entire site is 698,
plots 2, 4, and 8 may represent problem areas on the site and corrective actions may need to
be taken in these areas (e.g. additional plantings, limiting competition, etc).
4. Please provide separate density estimates of volunteer species within each plot for all future
reports. The photograph for plot 4 appears to have several woody stems in the plot, yet the
survey only shows two trees in the plot.
5. Future reports should include a map showing the location of the macroinvertebrate
sampling sites and the location of the reference site. It is difficult to determine the extent of
invertebrate recovery without knowledge of the reference site.
6. Future reports should include an estimate of the size of the catchment and an estimate of
stream width at baseflow. In the report it is unclear how much stream catchment is upstream
of each of the macroinvertebrate sites. Biocriteria were applied to the macroinvertebrate
community, however streams with catchments <3 sq miles should not be rated (at least not
without correction factors) because the streams will be rated artificially low. It is possible
that the streams are closer to recovery than currently portrayed. N°ic Carona
?tura!!y
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone [phone] / Fax [phone]
Internet: http://www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper
Year One Monitoring Report
for
Mount Vernon Springs Stream &
Wetland Restoration
Chatham County, North Carolina
S&EC Project No. 6382
Prepared for
Research Triangle Foundation
February 2006
Soil & Environmental Consultants, PA
11010 Raves UP Road • Ral isk North Qw i n 27614 • Phow. [phone] • Fax: [phone]
www.SandMcom
1.0 INTRODUCTION
1.1 Introduction
This monitoring report has been prepared by Soil & Environmental Consultants, PA
(S&EC) in order to present and evaluate site monitoring data for the period January 1,
2005 through December 11, 2005, for the Mount Vernon Spring Mitigation Site in
Chatham County, North Carolina. This report includes the following:
Project History
Mitigation Components
Hydrologic Monitoring
Vegetation Monitoring
Stream Monitoring
Benthic Monitoring
Appendix A - Groundwater Data
Appendix B - Site Photos
Appendix C - Stream Survey Data
Appendix D - Benthic Survey Data
1.2 Project History
The Mount Vernon Springs Mitigation Site, was restored in order to offset impacts
created by the Research Triangle Park Foundation for stream and wetland impacts
associated with the expansion of Research Triangle Park. The 32-acre site is located
approximately 4 miles south of Siler City and approximately 2 miles west of Highway
421 in Chatham County, NC (USGS HUC 03030003, Subbasin 306012). The wetland
mitigation effort involves approximately 7.5 acres of restoration of prior converted
wetlands, the creation of approximately 7.0 acres of wetlands, and 0.35 acres of vernal
pools. Stream mitigation includes the restoration of approximately 4,985 linear feet.
Phase I, consisting of approximately 1,132 linear feet of stream and adjacent buffers and
wetlands was constructed during the period February 11, 2002, to March 1, 2002. Phase
II, consisting of approximately 3,853 linear feet of stream restoration and 14.88 acres of
wetland restoration, wetland creation, and vernal pool creation, was constructed March
30, 2004 to May 3, 2004. All construction and planting was performed by North State
Environmental, Inc., of Winston-Salem, NC.
1.3 Mitigation Components
' After the completion of the as-built survey of the restoration project, total accrued
mitigation credits were tabulated. Field data was gathered utilizing standardized survey
practices and the data was subsequently quantified using AutoCAD. Quantified below is
the cumulative (Phase I and II) length of stream channel restored onsite.
Mitigation Type Total
Stream Restoration - Phase I 1,132 linear feet
Stream Restoration - Phase II 3,853 linear feet
Total Stream Length 4,985 linear feet
Wetland Restoration (1:1 replacement
value 7.52 acres (7.52 credits)
Wetland Creation * (3:1 replacement value) 7.01 acres * 2.34 credits)
Vernal Pool Creation (3:1 replacement
value 0.35 acres (0.11 credits)
Total Wetland Acreage 14.88 acres 9.97 credits
* As part of the Year Two monitoring effort, S&EC will delineate the actual acreage of created wetland on
' the site and subsequently adjust the quantity. Preliminary indications are that total wetland creation
acreage will exceed the original design estimate.
' To date, three U.S. Army Corps of Engineers (USACE) permits have been issued to the
Research Triangle Foundation, which have debited against available mitigation credits.
The permits are identified by the following action ID numbers:
Action ID Number Compensatory Stream Compensatory Wetland
Mitigation Mitiga on
200120436 & 200120437 768 linear feet N/A
200420081 259 linear feet N/A
2001120933 3,308 linear feet 6.23
Total Compensatory 4,335 linear feet 6.23 (6.23 credits)
Mitigation Required
Cumulative Compensatory 4,985 linear feet 7.52 (7.52 credits) acres
Mitigation Provided by the Mt. of wetland restoration and
Vernon Springs Mitigation Site 7.35 acres of creation
2.45 credits
Remaining Available 650 linear feet 3.74 wetland credits
Mitigation Credits
2.0 MONITORING
A Year One Monitoring report was previously submitted for Phase I (July 2003),
however, upon the completion of construction of Phase II, it was agreed to combine the
' two phases and begin full site monitoring in 2005 (Year One). This report serves as the
2
Year One Monitoring report for both Phases. Wetland monitoring will occur annually,
with stream surveys occurring in Years One, Three, and Five. Benthic Monitoring
' initiated in the spring of 2005 and will continue annually until Year Three as verbally
agreed upon with NC DWQ staff. Reports will be submitted biannually, with the Year
Three report due in early 2008.
' This section includes information concerning; 1) hydrologic monitoring, 2) vegetative
monitoring, 3) stream monitoring, 4) benthic monitoring, and 5) evaluation of site
' success. These data are provided in order to establish a baseline against which future
monitoring data may be compared.
' 2.1 Hydrologic Monitoring
Hydrologic monitoring data for the 2005 monitoring year indicates that the site is
' successfully experiencing conditions consistent with local jurisdictional wetlands. Data
collected for the monitoring period are presented in tabular and graphical format in
Appendix A. A total of eight (8) Inifinities U.S.A., groundwater monitoring gauges
numbered MV-1 through MV-8 were installed on the site. An Infinities U.S.A., rain
gauge was also installed onsite. The location of these gauges are shown on Sheet 1.
' Data collected on this and other sites over the past several years indicates that the most
likely times of the year in which soil saturation occurs in wetlands is during the winter
' and early spring months. Rainfall patterns during the preceding winter and early spring
months are the most critical of the year relative to successful wetland hydrology for that
year. Typically, once the growing season enters late spring through summer, shallow
' groundwater levels begin to fall and also fluctuate rapidly due to high evapotranspiration
rates and summer rainfall patterns. Fall is normally the driest portion of the year.
Rainfall patterns for the 2005 monitoring year indicate a drier-than-normal year for the
' site. Upon review of the recorded on site rainfall data it was found that a total of 26.67
inches of rainfall fell on the site in 2005. Of this depth, 19.8 inches fell within the
growing season (approximately March 16 through October 16).
' Success criteria for wetland hydrology include the saturation of the upper 12 inches of
soil for at least 16 consecutive days of the growing season. All eight (8) gauges have
' made hydrology with consecutive days of saturation ranging from 30 to 73 consecutive
days.
' The site has continued to perform successfully during the 2005 (Year One)
monitoring season with respect to the hydrologic status of the mitigation areas.
' 2.2 Vegetation Monitoring
Success criteria for vegetation is based on the average number of live stems per acre
across the site as described in the Mitigation Plan. As described in the Mitigation Plan, a
mean density of 260 stems per acre is required at the end of the five-year monitoring
period.
Eight (8) sample plots are located across the site adjacent to the groundwater monitoring
' gauges. For simplification of records the sample plots are numbered the same as the
monitoring gauges (MVS-1 through MVS-8). Each plot is a square, 10 meters (32.8 feet)
on each side (100 square meters, or approximately 1075 square feet). The locations of
' sample vegetation plots are identified on Sheet 1. Photos of each vegetation plot are
included as Appendix B.
' Vegetation counts were performed on November 2, 2005, and December 11, 2005. A
table indicating the total number of live stems in each sample plot is included below:
Plot MVS MVS MVS MVS MVS MVS MVS MVS Total
Numbers 1 2 3 4 5 6 7 8
Total
woody 30 8 19 2 17 47 9 6 138
Stems
' The average number of stems per sample plot is 17.25 stems. The sample plot median is
13.0 stems. A review of the sample plots (averaging 17.25 stems per plot) reveals a
current (2005 - Year One) site survival density of approximately 698 stems per acre.
' Species diversity is described in the following table:
Plots
Species 1 2 3 4 5 6 7 8 Year 1 Totals
Swamp Chestnut Oak
(Quercus michauxii)
3
1
4
Green Ash
(Fraxinus pennsylvanica)
25
4
7
2
17
45
2
102
Unknown Oak
(Quercus spp.)
2
1
1
4
8
River Birch
(Betula nigra)
3
5
8
Elderberry
(Sambucus canadensis)
1
2
3
American Sycamore
(Platanus occidentalis)
3
3
1
1
8
Black Willow
(Salix nigra)
5
5
Year 1 Totals 30 8 19 2 17 47 9 6 138

Live Stem Density 1214 324 769 81 688 1902 364 243

Average Live Stem Density 69 8
4
There are seven (7) different woody species represented within the eight (8) sample plots.
' Stem count will most likely vary in future years.
In summary, the vegetative component of the mitigation effort is on track to meet
the established success criteria of 320 live stems per acre by Year Three.
2.3 Stream Monitoring
Soil & Environmental Consultants, PA (S&EC) completed the Year One monitoring of
' the Mount Vernon Springs Mitigation Site on November 16 and 17, 2005. Fourteen (14)
cross-sections were established onsite and are shown on Sheet 1. Data from the Year
One survey is included as Appendix C. The as-built section of the Phase I longitudinal
' profile was not included for comparison against the Year One survey of this section
(Station 39+00 to Station 47+80). Due to a difference in survey methods, the overlay of
the profiles in this section of stream displays a departure. This departure was not
' observed during our field visits. Because of the visual assessment in this stream and the
lack of departure in the sections that were surveyed using the same methods, S&EC is
confident that this discrepancy does not illustrate actual stream instability.
' Based on visual observation of the entire restored stream channel and in-channel
' structures, followed by the comparative analysis of the As-built survey data set, the
restored channels are stable and exhibit very little departure (vertical or horizontal) from
the as-built conditions. There are a series of beaver dams which are impounding the
' channel, however, at this time, they do not appear to have detrimentally impacted the
channel. Per the Mitigation Plan, success criteria has been met in that the stream
bedform features and cross-sections have remained stable (i.e. the stream has retained its
enhanced Rosgen stream-type classification) through the date of this report. Therefore,
' Year One monitoring of the stream channel confirms a successful, stable channel.
2.4 Benthic Monitoring
' The Year One benthic survey was completed on April 13, 2005, by S&EC. This
sampling event replicated a baseline benthos survey that was performed by S&EC on
July 12, 2001, before construction commenced. This sampling event was conducted
' according to protocol specified by the NCDENR-DWQ Standard Operating Procedures
for Benthic Macroinvertebrates. Samples were taxonomically identified by Pennington
& Associates, Inc. of Cookeville, TN. Results of the Year One sampling event are shown
' in the following table and attached as Appendix D.
As shown below, the Year One monitoring has shown an increase in all four metrics
reported, including EPT Taxa Richness. While a general increase in organisms is not
always a positive indicator, we have seen a shift towards more intolerant species, as is
shown in the NC Biotic Index. Tolerance Values range from 0 for organisms very
intolerant of organic wastes to 10 for organisms very tolerant of organic wastes. As this
index as decreased, we are seeing more organisms that require higher quality waters in
' the system.
The Average EPT Taxa Richness has increased from 2 species to 11. This raises the
classification of the stream from Poor to Fair. We believe that as the system progresses,
we will continue to see increased numbers of EPT taxa. The following results summary
is provided in the following table.
Pre Year l
2001 2005
TOTAL NO. OF ORGANISMS 47 60
TOTAL NO. OF TAXA 30 26
EPT TAXA RICHNESS 2 11
EPT ABUNDANCE 5 23
NC BIOTIC INDEX 6.960 5.960
' Overall, in Year One there has been an increase in the total number of organisms. This is
coupled with an increase in the number of different species in all stations. The richness
' and abundance of EPT taxa showed increases in all sampling stations, showing a shift
toward more intolerant species. This shift towards higher quality, more intolerant species
is also shown in the decrease in the NC Biotic Index.
Station 1 Station 2 Station 3
Pre Year 1 Pre Year 1 Pre Year 1
2001 2005 2001 2005 2001 2005
TOTAL NO. OF ORGANISMS 53 60 44 47 44 73
TOTAL NO. OF TAXA 35 26 26 24 28 28
EPT TAXA RICHNESS 2 9 3 12 2 12
EPT ABUNDANCE 4 24 9 24 2 20
NC BIOTIC INDEX 6.97 6.54 6.38 5.25 7.53 6.09
' Based on the benthic data collected to date, the site shows indications of
improvement in overall water quality.
2.5 Monitoring Success - Year One (2005)
' Based on vegetation data collected within the sample plots, existing groundwater
gauge, stream physical data, and benthic data, the site has met the intent of the
' success criteria as set forth in the mitigation plan for the calendar year 2005.
6
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CROSS-SECTION
LOCATIONS
R d 1 rroject: rrojCCL NO.:
MOUNT VERNON SPRINGS STREA G352
aae rot. gr.: raven:
AND WETLAND RESTORATION p 5 IOW
Soil A Environmental Consultants, PA Location: ent: Scale:
11o10 Raven Ridge Road • Raleigh, Nath Cuolim 27614 • Vmw: (919) 8465900 • Fm(919)846-9467 CHATHAM CO.. NC RESEARCH TRIANGLE FOUNDATION I ' = 125'
www.SandOC.com 5heet Title: heat No.:
SITE PLAN I OF I

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Site Photos
OdhB
A photograph of each of the eight (8) sample plots is included below. Each view is from
the southeast corner of the plot toward the northwest corner where the groundwater
monitoring gauge is located. The photos were taken at the end of the 2005 growing
season.

Plot MVS2 - November 2, 2005
Plot MV S 1 - November 2, 2005
Plot MVS3 - November 2, 2005
Plot MVS4 - December 11, 2005
Plot MVS6 - November 2, 2005
Plot MVS5 - December 11, 2005
Plot MVS8 - December 11, 2005
Plot MVS7 - December 11, 2005
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Appendix C
Figure 1 - Cross Section # 1 - Riffle 1 (2005)
Figure 2- Cross Section # 1 - Riffle 1 (2002)
Mount Vernon Springs Stream and Wetland Mitigation
Year I Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006

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Appendix C
Figure 3 - Cross Section # 2 - Pool 1 (2005)
Figure 4 - Cross Section # 2 - Pool 1 (2002)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006
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Appendix C
Figure 5 - Cross Section # 3 - Riffle 2 (2005)
Figure 6 - Cross Section # 3 - Riffle 2(2002)
Mount Vernon Springs Stream and Wetland Mitigation
Year I Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006

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Appendix C
Figure 7-Cross Section # 4 - Pool 2 (2005)
Figure 8 - Cross Section # 4 - Pool 2 (2002)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006

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Figure 9-Cross Section # 5-Riffle 3 (2005)
Figure 10-Cross Section # 5 -Riffle 3 (2004)
Cross Section Photos and Raw Data
Mount Vernon Springs Stream and Wetland Mitigation Soil & Environmental Consultants, PA
Year 1 Monitoring January 2006

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Appendix C
Figure 11-Cross Section # 6-Pool 3 (2005)
Figure 12-Cross Section # 6-Pool 3 (2004)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006

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Appendix C
Figure 13-Cross Section # 7 - Riffle 4 (2005)
Figure 14-Cross Section # 7 - Riffle 4 (2004)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006

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Appendix C
Figure 15-Cross Section # 8 - Pool 4 (2005)
Figure 16-Cross Section # 8 - Pool 4 (2004)
Mount Vernon Springs Stream and Wetland Mitigation
Year I Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006
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Appendix C
Figure 17-Cross Section # 9 - Riffle 5 (2005)
Figure 18-Cross Section # 9 - Riffle 5 (2004)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006

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Figure 19-Cross Section # 10 - Pool 5 (2005)
Figure 20-Cross Section # 10 - Pool 5 (2004)
Mount Vernon Springs Stream and Wetland Mitigation Soil & Environmental Consultants, PA
Year 1 Monitoring January 2006

Appendix C Cross Section Photos and Raw Data
I
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Appendix C
Figure 21-Cross Section # 11 - Riffle 6 (2005)
Figure 22-Cross Section # 11 - Riffle 6 (2004)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006
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Appendix C
Figure 23-Cross Section # 12 - Pool 6 (2005)
Figure 24-Cross Section # 12 - Pool 6 (2004)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006

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Appendix C
Figure 25-Cross Section # 13 - Riffle 7 (2005)
Figure 26-Cross Section # 13 - Riffle 7 (2004)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006
?I

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Appendix C
Figure 27-Cross Section # 14 - Pool 7 (2005)
Figure 28-Cross Section # 14 - Pool 7 (2004)
Mount Vernon Springs Stream and Wetland Mitigation
Year 1 Monitoring
Cross Section Photos and Raw Data
Soil & Environmental Consultants, PA
January 2006

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Appendix C Cross Section Photos and Raw Data
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Mount Vernon Springs Stream and Wetland Mitigation Soil & Environmental Consultants, PA
Year I Monitoring January 2006
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Station 1 station 2 station 3
P. Year 1 Year 2 Year 3 Pre Year 1 Year 2 Year 3 Pre Year 1 Year 2 Year 3
FFG 2001 2005 2005 2007 2001 2005 2005 2007 2001 2005 2005 2007
M1
G
D'.
1
LLUSCA
stropoda
ralvia
aneroida
Iphseriidae
cisldium sp. 1 3
Sphaerium sp. 1
asommatophom
rr-idae
y
cossaia sp.
rhysidae E
ohysella sp. _y 1 3 F 3
NELIDA
gochaeta
apiota:Ida
.umbricidae 3 1 3
ubificida
inchytmidas
"ubificidae w.o.h.c. -? 3
'ubificidae w.h.c.
vdinea 1 3 1
THROPODA
achnoidea
carifomnes
sbertiidee
Lebertia sp.
ustacea
ladocera
>aphnidae
Ceriodaphnia sp.
ecapoda
)ambaddee I
Cambarus sp. 3 1 3 I
.oPOde
'-
l`

v
Y
tsellide
e
?
Caecidotea sp.
mphipoda r?
MT
;ren
on
tid
g
yc
ee
Crangonyx sp. 3 1 1 3 3
stracocia 3
recta
ollembola 1
sotomidae 1
phemeroptera

tmeletidae _
Ameletus lineatus '
laelidee
Acerpenna mod
unnoughi
Heeds af. flaNstrig. 1 3 3
Seal
s sp.
Callibaetis sp. 1 ( ?r3-
Cenfroptilum sp. 3
Diphetorhageni
Plauddu sp. 1
)aenidee
Caenis sp. 1 = 1
-phemerellidea
Eurylophella sp.
Eurylophella dais
leptagamidae (jic
Macceffertium (Stenonema) femoralum
Maccaffertium (Stenonema) modestum 1
1 3 1 3
Stenonema terminatum
Maccaffertium (Stenonema) sp. 3
3 1
1
Stanecron interp-tatum 1
sonychiidae
Isonychia sp. 1 1
.eptophlebiidae
Leptophlebia sp. 1
Para/eptophlebia sp. 1
)donate
:alopterygidae -
Calopteryx sp. 3
Hetaerina sp. 1 3 ' i
:oenaghonidae
Argia sp.
Enallagma sp. 1 1
Ischnura sp. 1
)onlulegastridae
Cordulegaster sp.
:orduliidae 1
Somatochlora sp. a ;. 3
3omphidae
Gomphus sp.
Ophiogomphus sp.
Progomphus ob-s , Y.
Slylogomphus albistylus 1
.ibellulidae 1
Libellula sp. 3
'lecoptera -
Jemouridae
Amphinemura sp. 3
'edidee
PerWta placide sp. gp. 3 3 3
'erlodidae _
Isoperla bllineare 1 3
Isoperla sp.
emipt"a
3elostomatidae
Belostoma sp.
3emdee 1
Aquarius sp. I
At
O
1
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A
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7
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Heteroptera
Belostomatidae t
B.Wt ma P.
3
Corixidae 3 } . 1 I
Veliidae
Megaloptera
Corydalidee
Nigronia semicornis 3 3
Sielidae
Sialis sp. 3 3
Trichoptera
Hydmpsychidae 1
Cheumatopsyche sp. 3 10 3 3
Diplecbona modest- 1
Hydropsyche betteni gp. 3 1
Philopotamidae
Chlmarra Word- - 3 'I 1
Lepidostometidae
Lepidostoma V'
Limnephilidae
Ironoquia sp. '
Pycnopsyche V' _
Rhyewphilidae
Rhyacophda /enesaatagedra
Uenoidae
Neophylax sp.
Coleoptere
Dryopidae
Helichus basalis 1
Helichus lithophilus 3 - 3
Helichus sp.
Dytiscidae 1
Copelatus sp.
Coptotomus sp. 1 -
Hydroporus sp.
Elmidae 3 1
Dubiraphie vittata (
-
f
Stenelmis sp. € t
Gyrinidee
Dineutus sp.
Gyrinus SP.
Haliplidae i
PeROdytes sp.
Hydrophtlidee 1
Hydrobius sp.
Spemhopsis tesselatus
Tropisternus sp. 1 1
Scirtidae 3 1 1
Staphylinidae t
Diptere
Chi-idae 1 1 3
Ablabesmyia mallochi 1 1 1
Chironomus sp. 7 1 1
Cladotanytarsus sp.
Clinotanypus sp. 1

Clinotanypus pinguis

{ _
Con
chapelopta sp. 1 3
Cricotopus bicincYUS 3 1 10 1 .;
Cryptochironomus sp. 1 1
Dicrotendipes sp. 1
Dcrotendipes neomodestus 3
Endochironomus sp.
K 8_pe/opia sp. 1 1 1
Microtendipes sp. 1 1
Microtendipes pedellus gp.
Nilothauma ap.
Paramerina sp.
Parametriocnemus sp.

- 1

1

1
Paracladopelma sp.
Paratendipes sp. 1 3 1
Phaenopsectra sp.
Polypedilum lallax 1
Polypedilum Bavum (convictum) - T1 10 1 10 10
Polypedlum h-deral. 1?•• 3 '
I
Polypedd- illinoense
Potthastia longimana 1 1 1
Procladius sp. ?: - 1
Psectrocladius sp.
Rheotanytarsus sp.
4 1
1 1 1
Tanytarsus sp. 1
Thienemannimyta gp. 1 3 1
Zavrelie sp.
Z-vrelimyia sp. 1

Di- sp.
Dixella sp.
Empididee
H.-d-4 sp. 1
Simulildae 1
Simulium sp. 1 10
Straliomyidea
Allognosta sp. 1
Tabanidae
Chrysops sp.
Tipulidee
Hexatoma sp.
Limnophila sp. ,
Pseudolimnophile sp. ? 1 I
T1pula sp. 1 1 1 1
CHOROATA""""
Osteichthyea
Poeciliidae
Gambusia affinis
TOTAL NO. OF ORGANISMS
TOTAL NO. OF TAXA
EPT TAXA
EPT ABUNDANCE
NC BIOTIC INDEX
"
".
1
53 00 0 0 44v 47 0 0 J? X 44 " 73 0 0 ?4 0 I?
35 28 0 0 28 24 0 0 28 28 0 0 0 1
.<, 2 9 0 0 3 12 0 0 2 12 0 0 L?'. 0 0 0
4 24 0 0 9 24 0 0 2 20 0 0
8.54 5.25 8.09
8

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p .? Alan W.
Klimek,
P
.E. Director
Division of Water Quality
June 19, 2006
Mr. Patrick Smith
S&EC
11010 Raven Ridge Rd.
Raleigh, NC 27614
Re: Mount Vernon Springs Stream and Wetland Restoration, Chatham County, NC (DWQ # 01-
1206)
Dear Mr. Smith:
DWQ has received and reviewed the, "Year One Monitoring Report for Mount Vernon Springs Stream
and Wetland Restoration, Chatham County, North Carolina, February 2006." The following comments
arose upon review of the document:
1. The hydrologic data for all 8 monitoring wells appear to meet the success criteria for year
one.
2. The vegetation monitoring should be conducted during the growing season (approximately
March 16 to October 16 according to the report). This will allow easier vegetation
identification and more accurate assessment of the health of the vegetation.
3. Tree densities for the vegetation in plots 4 and 8 are below the five year success criteria of
260 trees per acre. Plot 2 is marginally successful relative to the 320 tree per acre success
criteria established for year 3. Although the average tree density for the entire site is 698,
plots 2, 4, and 8 may represent problem areas on the site and corrective actions may need to
be taken in these areas (e.g. additional plantings, limiting competition, etc).
4. Please provide separate density estimates of volunteer species within each plot for all future
reports. The photograph for plot 4 appears to have several woody stems in the plot, yet the
survey only shows two trees in the plot.
5. Future reports should include a map showing the location of the macroinvertebrate
sampling sites and the location of the reference site. It is difficult to determine the extent of
invertebrate recovery without knowledge of the reference site.
6. Future reports should include an estimate of the size of the catchment and an estimate of
stream width at baseflow. In the report it is unclear how much stream catchment is upstream
of each of the macroinvertebrate sites. Biocriteria were applied to the macroinvertebrate
community, however streams with catchments <3 sq miles should not be rated (at least not
without correction factors) because the streams will be rated artificially low. It is possible
that the streams are closer to recovery than currently portrayed. Caro ' a
?tura??
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone [phone] / Fax [phone]
Internet: http://www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper

7. The stream channel appears to be very stable at this point. It is DWQ's hope that they will
remain so after a couple of bankfull events.
DWQ appreciates the timely submittal of this monitoring report. We look forward to watching the
progress of this site over the next four years. If you have any questions or need any further assistance,
please contact Amanda Mueller of my office at [phone].
Sincerely Yours,
B04Y
R. Dorney
Cc: Todd Tugwell, USACOE-Raleigh RegulWtory Field Office
Eric Kulz, DWQ-RRO
Central Files
File Copy (c/o Amanda Mueller)
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