20020241 Ver 1_Complete File_20020208

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STATE OF NORTH CAROLINA Yd{I UALIN SECTt
DEPARTNMNT OF TRANSPORTATION
JAMES B. HUNT JR. P.O. BOX 25201, RALEIGH, N.C. 27611-5201 DAVID MCCOY
GOVERNOR SECRETARY
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS BRANCH
TRANSMITTAL LETTER
DATE: 8/5/99
TO: Mr. John Dornev
NCDENR - Division of Water Quality
1621 Mail Service Center
Raleigh, NC 27699-1621
I AM SENDING YOU:
u
COPIES DESCRIPTION
1 USMC Marsh Mitigation Site: letters from Resident Engineer
1 USMC Marsh Mitigation Site: estimate of quantities
1 USMC Marsh Mitigation Site: monitoring well location map
1 USMC Marsh Mitigation Site: planting plan
THESE ARE TRANSMITTED:
FOR YOUR APPROVAL
AS REQUESTED
X FOR YOUR INFORMATION
FOR CORRECTION
COMMENTS:
These were missing from the USMC Marsh As-Built package we
ago. Please add these to the as-built plans you received.
SIGNATURE
FOR REVIEW/COMMENT
TAKE APPROPRIATE ACTION
FOR YOUR FILE
to you a few weeks
SIGNED:

STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
JAMES B. HUNT JR. E. NORRIS TOLSON
GOVERNOR SECRETARY
March 4, 1999
PROJECT NO.: 6.269010T
T.I.P. NO.: U-2107WM
COUNTY: ONSLOW
DESCRIPTION: USMC Marsh Mitigation Site Located off NC 172
MEMORANDUM TO: Charles Cox
Wetland Mitigation Coordinator
FROM: J. W. Provost, PE
Resident Engineer ;
SUBJECT: USMC Marsh Mitigation
Construction of the USMC Marsh Mitigation Wetland Mitigation Site was monitored and inspected by
my office in conformity with construction plans prepared by NCDOT.
I hereby certify that the USMC Marsh Project has been constructed according to plan sheets, except in
the case of certain field revisions that are noted on attached plan sheets and any narrative attachments to
this letter.
Every effort was made to construct this site in accordance with the best information and guidance that
was available at the'tipe. Please advise if you need any additional information regarding this matter.
JWP:hjs
Attachment
Cc: File
299-A WILMINGTON HWY., JACKSONVILLE, NC 28540
[phone]/FAX [phone]

STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
JAMES B. HUNT JR. E. NORRIS TOLSON
GOVERNOR
February'), 1999
PROJECT NO.: 6.269010T
T.I.P. NO.: U-2107WM
COUNTY: ONSLOW
DESCRIPTION: USMC Marsh Mitigation Site Located off NC 172
Trader Construction Co .
PO Drawer 1578
New Bern, NC 28563
Attention: Mr. William W. Taylor, Project Manager
Dear Mr. Tavlor:
SUBJECT: Suspension of Work
SECRETARY
On Thursday, January 28th, 1999, representatives of our Planning and Environmental Unit visited the
site because of questions in the proposed elevations shown on the plans. It appears that the elevations do
not allow tidal flow in and out of the site which is critical for success. At that time I directed your
Superintendent to not do any further grading until this matter was resolved.
Today we met with Corp of Engineers Representative, Scott McLendon, and DOT Planning &
Environmental group to. determine proper elevations for grading. They are supposed to have a revised
set of elevations to me by Friday, February 5th, 1999.
In accordance with Article 104-4, I am suspending your operations from Friday, January 29th until such
time that a revised set of elevations can be determined.
If, after receipt of this suspension in work you feel that additional compensation for idle equipment
and/or labor is justifiable, please submit your intent within 7 days as per Article 104-4(A)
SUSPENSIONS OF WORK ORDERED BY THE ENGINEER
PROJECT NO.: 6.269010T
Mr. William W. Taylor
February 3, 1999
Page 2
Hopefully this matter can be resolved quickly and work can resume on site.
If there are any questions, please advise.
Sincerely,
J. W. Provost, PE
Resident Engineer
JWP/hjs
I'
299-A WILMINGTON HWY.. JACKSONVILLE. NC 23540
[phone]/FAX [phone]
U-2107WM
USMC Marsh Mitigation Site
Camp LeJeune Marine Corps Base, Onslow County
Time Frame:
Date of Availability for Construction - January 11, 1999
Completion Date - March 1, 1999
Estimate of Quantities
ITEM UNIT SCHEDULED
QUANTITY ACTUAL
QUANTITY
Mobilization EA 1
Fabric for Soil Stabilization SYD 800 j78.3
Incidental Stone Base TON 300 233.47
Grading EA 1 1
Temporary Silt Fence LFT 100 15
Stone for Erosion Control TON 10 N/A
Silt Excavation CYD 100 N/A
N/A
Coir Fiber Matting SYD 225 N/A
Sediment Control Stone TON 10 N/A
r loating Turbidity Curtain SYD 60 N/A
Seeding and Mulching ACR 5 6
Supplimental Grading EA 1 _ n 1

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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
P.O. BOX 25201, RALEIGH, N.C. 27611-5201 DAVID MCCOY
SECRETARY
July 19, 1999

WPon of Water Quality, Wetlands
?T621 Mail Service Center
Raleigh, North Carolina 27699-1621
Re: USMC Marsh Mitigation Site, Camp LeJeune Marine Corps Base, Onslow
County, TIP Project U-2107WM
Dear Mr. Dorney:
Please find enclosed the As-Built Report for the USMC Marsh Mitigation Site located in
Onslow County. The Resident Engineer responsible for this project, Mr. Jackson
Provost, P.E., has certified that the site was constructed according to construction plan
sheets, with the exceptions noted in this As-Built Report.
For completeness purposes, the following information has been included with the
As-Built Report: (1) Letter of Construction Compliance, (2) As-Built Plan Sheet(s),
(3) Planting Plan Sheets, (4) Well Location Map, and (5) Estimate of Quantities.
Please note that the elevations shown on the as-built•plans are quite different than those
proposed in the original mitigation plan or the design plan. Based on the February 5,
1999 meeting between the USACE and our staff at the construction site, it was
determined that a design change was needed to ensure that the tidal flow would be
allowed in and out of the site. We added a second opening at the Corps' request and
lowered the grade in the front section. We feel that this design changed is a vast
improvement to the original plan.
If you should have any questions or require additional information, please contact
Charles R. Cox, P.E., Natural Systems Engineer, at [phone], Ext. 301.
JAMES B. HUNT JR.
GovERNOR
Sincerely,
I/- C- '?LL
V.C. Bruton, Ph.D., Assistant Manager
Project Development and Environmental
Analysis Branch
VCB/crc
Enclosures
Cc: David Franklin, USACE
Scott McLendon, USACE
Doug Huggett, DCM
` State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting Director
NCDENR
February 14, 2002
Onslow County
DWQ No. 020241
APPROVAL of 401 Water Quality Certification
Mr. William D. Gilmore, P.E., Manager
Planning and Environmental Branch
North Carolina Department of Transportation
1548 Mail Service Center
Raleigh, North Carolina, 27699-1548
Dear Mr. Gilmore:
You have our approval, in accordance with the attached conditions and those listed below, to undertaken
excavation and fill activities at the USMC Marsh Wetland Site (TIP U-2107WM). The project's purpose is
the remediation of the referenced wetlands mitigation site. The project shall be constructed in accordance
with your application dated January 24, 2002. After reviewing your application, we have decided that this
fill is covered by General Water Quality Certification Number 3112. This certification corresponds to the.
Regional Permit Number 198000291 issued by the Corps of Engineers, and CAMA Major Permit issued by
the Division of Coastal Management. In addition, you should acquire any other federal, state or local
permits before you'proceed with your project including (but not limited to) Sediment and Erosion Control,
Non-Discharge and Water Supply Watershed regulations. This approval will expire with the accompanying
404 permit unless otherwise specified in the Water Quality Certification.
This approval is valid solely for the purpose and design described in your application (unless modified
below). Should your project change, you must notify the DWQ and submit a new application. If the
property is sold, the new owner must be given a copy of this Certification and approval letter, and is thereby
responsible for complying with all the conditions. If total wetland fills for this project (now or in the future)
exceed one acre, or of total impacts to streams (now or in the future) exceed 150 linear feet, compensatory
mitigation may be required as described in 15A NCAC 2H .0506 (h) (6) and (7). For this approval to
remain valid, you must adhere to the conditions listed in the attached certification.
.
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 that conforms to' Chapter'150B of theNorth'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.
State of North Carolina
Department of Environment Iff
and Natural Resources F44
Division of Water Quality
.. 7f
Michael F. Easley, Governor
William G. Ross, Jr., Secretary E
Gregory J. Thorpe, Ph.D., Acting Director
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 contact John Hennessy at 919-733-5694.
Attachments: .
Permit Application
General Conditions
Sincerely,
-State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Gregory J. Thorpe, Ph.D., Acting Director
CAMA PERMIT CERTIFICATION
e??
NCDENR
GENERAL CERTIFICATION FOR PROJECTS ELIGIBLE FOR CORPS OF
ENGINEERS GENERAL PERMIT NUMBER 198000291
(ISSUED TO THE NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT)
AND NEUSE/TAR-PAMLICO BUFFER RULES
This General Certification is issued in conformity with requirement of Section 401, Public Laws
92-500 and 95-217 of the United States and subject to the North Carolina Division of Water
Quality Regulations in 15 NCAC 2H, Section .0500 and 15 NCAC 2B .0200 for the discharge
of fill material as described in General Permit 198000291 and for the Neuse and Tar-Pamlico
Buffer Rules (15A NCAC 2B .0233 and .0259). This Certification replaces Water Quality
Certification Number 3025 issued on September 6, 1995 and Water Quality Certification
Number 3112 issued on February 11, 1997. This WQC is rescinded when the Corps of
Engineers reauthorizes Regional General Permit 0291 or when deemed appropriate by the
Director of DWQ.
The State of North Carolina certifies that the specified category of activity will not violate
applicable portions of Sections 301, 302, 303, 306 and 307 of the Public Laws 92-500 and 95-
217 if conducted in accordance with conditions hereinafter set forth.
Conditions of Certification:
L Activities authorized by CAMA major permits require written concurrence from the
Division of Water Quality as well as compliance with all conditions of this General
Certification;
2. Activities authorized by Coastal Area Management Act (LAMA) Minor or General
Permits do not require written authorization from the Division of Water Quality as long
as they comply with all other conditions of this General Certification;
3. In accordance with North Carolina General Statute Section 143-215.3D(e), any request
for written concurrence for a 401 Water. Quality Certification must include the
appropriate fee. If a project also requires a CAMA Permit, one payment to both
.: ter,
gencies bmitted,and will be, a higher of the two fees. The fee shall be
a shall be su
collected and distributed between the two agencies in accordance with agreements
reached between the Division of Water Quality and the Division of Coastal
Management;
Y' ????': i.. :: '. ..-.. ? ". -., 4.`Impacts to any stream length in 'the Neuse and Tar= amlico River Basins requires
written concurrence from DWQ in accordance with 15A NCAC 2B.0233 and 15A
NCAC 2B .0259. New development activities located in the protected 50-foot wide
riparian areas (whether jurisdictional wetlands or not) within the Neuse and Tar-Pamlico
River Basins shall be limited to "use's",identified within and constructed in accordance
with 15A NCAC 213 .0233 and 15A NCAC 2B .0259. All new development shall be
located, designed, constructed,' and maintained to have minimal disturbance to protect
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting
water quality to the maximum extent p#a
practices; I
5. All sediment and erosion control
removed and the natural grade re
released the project;
NCDENR
through the use of best management
placed in wetlands or waters shall be
r the Division of Land Resources has
6. If an environmental document is requir d, this Certification is not valid until a Finding
of No Signficant Impact (FONSI) or R ord of Decision (ROD) is issued by the State
Clearinghouse. All water quality-relate conditions of the FONSI or ROD shall become
conditions of this Certificat
7. That appropriate sediment and erosion c?ontrol practices which equal or exceed those
outlined in the most recent version of th"North Carolina Sediment and Erosion
Control Planning and Design Manual' o the "North Carolina Surface Mining Manual"
whichever is more appropriate (availabl from the Division of Land Resources (DLR) in
the DENR Regional or Central Offices) all be in full compliance with all .
specifications governing the proper desi , installation and operation and maintenance
of such Best-Management Practices in or er to assure compliance with the appropriate
turbidity water quality standard;
8. Measures shall be taken to prevent live o fresh concrete from coming into contact with
waters of the state until the concrete has dened;
9. Additional site-specific conditions may b added to projects which have applied for
CAMA major permits which are propose under this Certification in order to ensure
-compliance with all applicable water quali y and effluent standards;
10. When written concurrence is required, the applicant is required to use the enclosed - =-.
Certification of Completion form to notify WQ when all work included in the 401
Certification has been completed;
11. Concurrence from DWQ that this Certifica ion applies to an individual project shall
expire t1ree years from the date of the cov letter from DWQ or on the same day as the
I. P
- expiration date of the correspondng Gener I Permit 198000291, whichever is sooner.
Non-compliance with or violation of the conditions herein set forth by a specific fill project
shall result in revocation of this Certification for-th project and may result in criminal and/or
civil penalties.
The Director of the North Carolina Division of Wat r Quality may require submission of a
formal application for individual certification for an project in this categoryof activity, if it is
determined thatthe project is likely to: have a signifi ant adverse effect upon water quality or
degrade the waters so that existing uses of the weda d or downstream waters are precluded.
State of North Carolina
Department of Environment
and Natural Resources +
• Division of Water Quality A' A)M
James B. Hunt, Jr., Governor
Bill Holman, Secretary Gregory J. Thorpe, Ph.D., Acting Director NCDENR
Public hearings may be held for specific applications or group of applications prior to a
Certification decision if deemed in the public's best interest by the Director of the North
Carolina Division of Water Quality.
Effective date: 1 June 2000
DIVISION OF WATER QUALITY
By
Kerr T. Stevens
Director

r , State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting D
)r
Certificate or Completeness
I - , Ls ,
'41 **IA&
NCDENR
11
DWQ Project No.: County:
Applicant:
Project Name:
Date of Issuance of 401 Water Quality Certification:
Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer
Rules, and any subsequent modifications, the applicant is required to return this certificate to the
401/Wetlands Unit, North Carolina Division of Watt r Quality, 1621 Mail Service Center, Raleigh, NC,
27699-1621. This form may be returned to DWQ b the applicant, the applicant's authorized agent, or the
Project Engineer. It is not necessary to send certific tes from all of these.
Applicant's Certification
h , he eby state that, to the best of my abilities, due care and
diligence was used in the observation of the construe ion such that the construction was observed to be built
within substantial`compliance and intent of the 401 later Quality Certification and Buffer Rules, the
approved plans and specifications, and other support ng materials.
Signature: Date:
Agent's Certification
I> he by state that, to the best of my abilities, due care and
diligence was used in the observation of the construe ion such that the construction was observed to be built
within substantial compliance and intent of the 401 ater Quality Certification and Buffer Rules, the
approved plans and specifications, and other ,suppo g materials.
Signature: Date:
If this roiect was desi ned b a Certified Professional
I, s aFduly ~registered Professional (i.e.,
Engineer, Landscape Architect, Surveyor, ect.) in the State of North Carolina; having been authorized to
observe (periodically, weekly; full time) the construe ion of the project for the Permittee hereby state that,
to the best of my abilities, due care and diligence w used, in the observation of the construction such that
the construction was observed to be built within subs antial compliance and intent of the 401 Water Quality
Certification and Buffer Rules, the,approved plans a specifications, and other supporting materials.
Signature Registration No.
Date
do'- + x
N ?
M 020241
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY LYNDo TIPPETT
GOVERNOR SECRETARY
January 24, 2002
h
.J
Bill Arrington
N.C. Division of Coastal Management 'X
151-B Hwy. 24
Hestron Plaza II
e
Morehead City, NC 28557
Subject: Onslow County, USMC Marsh Wetland Mitigation Site, TIP No.
U-2107WM, State Project No. 6.26010T.
Dear Sir:
The North Carolina Department of Transportation (NCDOT) received a permit
(CAMA Permit No. 77-97) from the N.C. Division of Coastal Management (NCDCM)
on August 12, 1997. That permit expired on December 31, 2000. A renewal to that
permit was issued on January 30, 2001 and expires on December 31, 2002. The purpose
of this letter is to request a minor modification to this permit.
After communicating with Cathy Brittingham of NCDCM, it was decided that the
following items should be included with this permit modification request: remediation
plan, summary of interagency meetings, final design plans, and a check in the amount of
$100. These items are enclosed with this letter.
Thank you for your assistance with this project. If you have any questions or
need any additional information about this project, please contact Matt Haney at (919)
733-7844, Extension 333.
Sincerely,

William Gilmore, P.E., Branch Manager
Project Development and Environmental Analysis Branch
MAILING ADDRESS: TELEPHONE: [phone] LOCATION:
NC DEPARTMENT OF TRANSPORTATION FAX: [phone] TRANSPORTATION BUILDING
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS 1 SOUTH WILMINGTON STREET
1548 MAIL SERVICE CENTER WEBSITE: WWW.DOH.DOT.STATE.NC.US RALEIGH NC
RALEIGH NC 27699-1548
t ? r a%

^-• _ r.
WG/mmh
Enclosure
cc: John Hennessy, N.C. Division of Water Quality
David Cox, N.C. Wildlife Resources Commission
Fritz Rohde, N.C. Division of Marine Fisheries
Cathy Brittingham, N.C. Division of Coastal Management
Doug Huggett, N.C. Division of Coastal Management
Kelly Williams, N.C. Division of Coastal Management
1.
USMC MARSH
CAMP LEJEUNE, ONSLOW COUNTY
U-2107WM
REMEDIATION PLAN
January, 2002
History of Site Implementation
The mitigation plan for this project was completed in July 1997. The site construction
was completed in March 1999. During the construction, the design of the project was
changed to add a horseshoe shaped channel to bring additional water onto the site. The
bottom of the channel was at the 1.0-foot elevation. The site was planted and monitored
during the 1999 growing season.
Success Criteria and Monitoring
The mitigation planning report indicated that the constructed marsh must emulate a
reference marsh ecosystem (RME). The RME for this site was areas adjacent to the
northeast and southwest sections of the site. From an evaluation of this RME, the high
marsh be flooded irregularly, while the intertidal marsh must be flooded daily. The report
did not detail success criteria for the upper scrub-shrub area.
The 2001 growing season has marked the third year that hydrologic and vegetative
monitoring have occurred on the site. Hydrologic monitoring had originally showed that
the site was meeting success. However, it was later determined that the gauges were
malfunctioning; these gauges were subsequently replaced 2 times. Saltwater corrosion
appeared to be the major factor why the gauges are misreading surface water elevations.
Vegetation monitoring of the site revealed that the Spartina alterniflora (planted in the
lower marsh) was not growing above 1.8-foot elevation. In addition, the Juncus
roe-merianus (planted in the upper marsh) also had poor success. Therefore, there is a gap
in vegetation between the 1.8-foot elevation and the scrub-shrub area.
Remediation Evaluation
In November 2000, NCDOT and agency representatives met to discuss problems with the
site. There was general agreement that the site was constructed too high and should be
graded down. However, representatives agreed that tidal data was required before
remediation action could be completed. It was also recommended that a type of
breakwater structure be evaluated.
In the spring 2001, all surface gauges were replaced for a second time. In addition, a tidal
gauge (of different brand than the other gauges) was placed in the Intracoastal Waterway.
The site was resurveyed to determined true elevations on the site.
In October 2001, NCDOT and agency representatives revisited the site to see the results
of the 2001 data. The field data for 2001 confirmed that part of the site is too high to
support tidal vegetation. The two inlets of the interior channel created by NCDOT have
either filled in some or were not constructed as deep as intended. The "channel" zone of
the site (at elevations from 1.0 to 1.8 feet) has been low enough for vegetation to become
established. On the edge of the site, some erosion from wave action has caused a breach
in the berm.
The tidal gauge has been more successful in providing reasonable tidal data. This gauge
has been roughly reading a tidal range from 0 to 2 feet.
The Spartina alterniflora has been thriving in the channel portion of the site; however,
the marsh grass (Cordgrass and Blackneedle Rush) has been almost non-existent above
the 1.8-foot elevation. The vegetation along the old log road portion of the site has been
thriving only in pockets.
At the last meeting in 2000, several agencies suggested that a breakwater structure be
considered to protect this site. Spencer Rogers with Sea Grant was consulted on this
matter. He visited this site prior to this meeting. His recommendation was to grade the
berm area down and not construct a breakwater structure.
Remediation Recommendations:
Based on the discussion at the October 24 meeting, the following remediation was agreed
to by the meeting attendees:
¦ The berm will be left in place. It is still valuable for protecting the site as a whole.
¦ The central "channel" (created by NCDOT on the site) will not be disturbed. The
vegetation is thriving best in these areas.
¦ The breached area in the berm will be plugged with coastal riprap to minimize
further erosion.
¦ An area between the berm and the internal channel of the site will be graded down to
an elevation range from 1.2 to 1.5 feet.
¦ ° The area inland from the internal channel will be further graded down to an elevation
range from 1.2 and graded up from there.
¦ The first layer of logs on the old log road will be removed to approximately elevation
1.5 foot.
¦ The main site and the old log road will be connected to open water area between
them.
In addition, the USACE recommended:
¦ Interior channels will be dug to allow additional tidal flow.
The group agreed that no breakwater structure would be constructed at this time. Because
of the changes occurring to the shoreline and berm, monitoring of this shoreline with
photos and stakes (to determine erosion rate) will be included in future monitoring
reports.
NCDOT designed the project according to the agreed upon remediation action. The site
is to be constructed in the Winter 2002 and planted in Spring 2002.

JAMES B. HUNT JR.
GOVERNOR
December 3, 2000
MEMORANDUM TO: File
DAVID MCCOY
SECRETARY
FROM: Charles R. Cox, P.E.
Project Development and Environmental Analysis Branch
SUBJECT: USMC Marsh Mitigation Site, Onslow County,
TIP Project U-2107M
A meeting was held onsite on November 28, 2000. Those in attendance were:
Scott McLendon
David Timpy
David Cox
Tom McCartney
John Hennessy
Kelly Williams
Ron Sechler
Marty Korenick
Joe Blair
Byron Moore
Shannon Simpson
Charles Cox
USACE
USACE
WRC
USFWS
DWQ
DCM
NMFS
USMC
Division 3 Construction
REU
PD&EA
PD&EA
A month prior to this meeting, PD&EA and the Division had met onsite and determined
that the site did need additional grading to an elevation for better spartina survival. The
spartina in the central channel (at elevation .7 to 1.0 feet) was thriving, but began to die
around elevation 1.7. The plan was to begin at the channel and lower the grade between
the channel and the highest elevation 3.4 to the west. The Division 3 maintenance
personnel were prepared to complete the work in the next few months and then have the
area replanted with marsh grass.
MAILING ADDRESS: TELEPHONE: [phone] LOCATION:
NC DEPARTMENT OF TRANSPORTATION FAX: [phone] TRANSPORTATION BUILDING
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS. - - 1 SOUTH WILMINGTON STREET
1548 MAIL SERVICE CENTER WEBSITE: WWW.DOH. DOT. STATE. NC.US RALEIGH NC
RALEIGH NC 27699-1548
STAYE
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
At this November 28 meeting, the agencies were in agreement that the entire site needed
lowering in elevation, not just the area west of the channel. They thought that the channel
was too high and that it would eventually silt in. They wanted to have the berm on the
water's edge removed (since breaches were already damaging the protection potential of
the berm), the channel lowered to allow for low tide, and to create a type of breakwater
just in the waterway. DCM stated that they had some approved designs for breakwaters.
Since adequate tidal data for this area (for low and high tide) is not available, all agencies
present at this meeting agreed that tidal gauges should be installed and monitored for a
few months to determine a low tide elevation. These gauges should have data
downloaded hourly. Also, NCDOT will then redesign the site using the low tide
elevation and will consider some type of armoring of the slope at the water's edge or a
breakwater structure. This work will allow the site to be replanted in spring 2001.
Everyone was in agreement that the extra time was needed to make the site successful.
CRC/cc
L
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY
GovERNOR
MEMO TO: File
FROM: Charles R. Cox, P.E., Natural Systems Engineer lfl?L-
Project Development and Environmental Analysis Branch
SUBJECT: USMC Marsh Mitigation Site, Camp LeJeune, Onslow County,
TIP Project R-2107WM
A meeting was held at the site on October 24, 2001. The focus of this meeting was to
review the design recommendations for remediation. Those in attendance were:
David Timpy
Kelly Williams
Tere Barrett
David Cox
Tom McCartney
Byron Moore
Gordon Cashin
Phillip Todd
ve-harles Cox
2001 Site Evaluation:
According to field data for 2001, a portion of the site is too high to support tidal
vegetation. The two inlets created by NCDOT have filled in some, but the "channel"
zone of the site (at elevations from 1.0 to 1.8 feet) has been low enough for vegetation to
become established. On the edge of the site, some erosion from wave action has caused a
breach in the berm.
?j?'eaF STATEy
A n?
0uwvm?
October 25, 2001
USACE
DCM
DCM
WRC
FWS
REU
PD&EA
PD&EA
PD&EA
LYNDO TIPPETT
SECRETARY
Surface water gauge data has still been inconsistent due to the effect of water salinity on
the gauges (causing corrosion to the wire sensors in the gauges). A tidal gauge (of a
different brand) was installed in the spring of this year (and replaced in the summer); this
gauge has been more successful in providing reasonable tidal data. This gauge has been
roughly reading a tidal range from 0 to. 2 feet.
MAILING ADDRESS:'
NC DEPARTMENT OF TRANSPORTATION
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS
1548 MAIL SERVICE CENTER
RALEIGH' NC 27699-1548
TELEPHONE: [phone]
FAX: [phone]
WEBSITE: WWW. DOH. DOT. STATE. NC. US
LOCATION:
TRANSPORTATION BUILDING
1 SOUTH WILMINGTON STREET
RALEIGH NC-
The Smooth Cordgrass has been thriving in the channel portion of the site; however, the
marsh grass (Cordgrass and Blackneedle Rush) has been non-existent above the 1.8-foot
elevation. The vegetation along the old log road portion of the site has been thriving only
in pockets.
At the last meeting in 2000, several agencies suggested that a breakwater structure be
considered to protect this site. Spencer Rogers with Sea Grant was consulted on this
matter. He visited this site prior to this meeting. His recommendation was to grade the
berm area down and not construct a breakwater structure.
Current Recommendations:
Based on the discussion at the October 24 meeting, the following remediation was agreed
to by the meeting attendees (also see attached figure).
¦ The berm will be left in place. It is still valuable for protecting the site as a whole.
¦ The central "channel" (created by NCDOT on the site) and inlets will not be
disturbed. The vegetation is thriving best in these areas.
¦ The breached area in the berm will be plugged with coastal rip rap to minimize
further erosion.
¦ An area between the berm and the internal channel of the site will be graded down to
an elevation range from 1.2 to 1.5 feet.
¦ The area inland from the internal channel will be further graded down to an elevation
range from 1.2 to 1.8 feet.
¦ The first layer of logs on the old log road will be removed to approximately elevation
1.5 foot.
¦ The main site and the old log road will be connected to open water area between
them.
The group agreed that no breakwater structure would be constructed at this time. Because
of the changes occurring to the shoreline and berm, monitoring of this shoreline with
photos and stakes (to determine erosion rate) will be included in future monitoring
reports.
NCDOT will proceed with the construction this winter and the site will be replanted in
the spring of 2002. A refinement of the permit and mitigation plan will likely be
necessary for this work.
CRC/cc
Cc: Meeting Attendees
Scott McLendon, USACE
Ron Sechler, NMFS
John Hennessy, DWQ
Bob Stroud, DC1VI
Marty Korenek, USMC Camp Lejeune
Joe Blair, P.E., Division 3
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FROM: REF. NO.. OR ROOM, BLDG.

ACTION
? NOTE AND FILE ? PER OUR CONVERSATION
? NOTE AND RETURN TO ME -? PER YOUR REQUEST
? RETURN WITH MORE DETAILS ? FOR YOUR APPROVAL
? NOTE AND SEE ME ABOUT. THIS ? FOR YOUR INFORMATION
? PLEASE. ANSWER ? FOR YOUR COMMENTS
? PREPARE REPLY FOR MY SIGNATURE ? SIGNATURES.
? TAKE APPROPRIATE ACTION ? INVESTIGATE AND REPORT
COMMENTS: -

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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY
GOVERNOR
January 24, 2002
Bill Arrington
N.C. Division of Coastal Management
151-B Hwy. 24
Hestron Plaza II
Morehead City, NC 28557
LYNDO TIPPETT
SECRETARY
Subject: Onslow County, USMC Marsh Wetland Mitigation Site, TIP No.
U-2107WM, State Project No. 6.26010T.
Dear Sir:
The North Carolina Department of Transportation (NCDOT) received a permit
(LAMA Permit No. 77-97) from the N.C. Division of Coastal Management (NCDCM)
on August 12, 1997. That permit expired on December 31, 2000. A renewal to that
permit was issued on January 30, 2001 and expires on December 31, 2002. The purpose
of this letter is to request a minor modification to this permit.
After communicating with Cathy Brittingham of NCDCM, it was decided that the
following items should be included with this permit modification request: remediation
plan, summary of interagency meetings, final design plans, and a check in the amount of
$100. These items are enclosed with this letter.
Thank you for your assistance with this project. If you have any questions or
need any additional information about this project, please contact Matt Haney at (919)
733-7844, Extension 333.
Sincerely,
PAYMENNT
RECEIVED
William Gilmore, P.E., Branch Manager
Project Development and Environmental Analysis Branch
MAILING ADDRESS: TELEPHONE: [phone] LOCATION:
NC DEPARTMENT OF TRANSPORTATION FAX: [phone] TRANSPORTATION BUILDING
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS - 1 SOUTH WILMINGTON STREET
1548 MAIL SERVICE CENTER- - WEBSITE: WWW.DOH.DOT.STATE.NC.US RALEIGH NC
RALEIGH NC 27699-1548
WG/mmh
Enclosure
cc: John Hennessy, N.C. Division of Water Quality
David Cox, N.C. Wildlife Resources Commission
Fritz Rohde,-N.C. Divisionof Marine Fisheries
Cathy Brittingham, N.C. Division of Coastal Management
Doug Huggett, N.C. Division of Coastal Management
Kelly Williams, N.C. Division of Coastal Management
.
USMC MARSH
CAMP LEJEUNE, ONSLOW COUNTY
U-2107WM
REMEDIATION PLAN
January, 2002
History of Site Implementation
The mitigation plan for this project was completed in July 1997. The site construction
was completed in March 1999. During the construction, the design of the project was
changed to add a horseshoe shaped channel to bring additional water onto the site. The
bottom of the channel was at the 1.0-foot elevation. The site was planted and monitored
during the 1999 growing season.
Success Criteria and Monitoring
The mitigation planning report indicated that the constructed marsh must emulate a
reference marsh ecosystem (RME). The RME for this site was areas adjacent to the
northeast and southwest sections of the site. From an evaluation of this RME, the high
marsh be flooded irregularly, while the intertidal marsh must be flooded daily. The report
did not detail success criteria for the upper scrub-shrub area.
The 2001 growing season has marked the third year that hydrologic and vegetative
monitoring have occurred on the site. Hydrologic monitoring had originally showed that
the site was meeting success. However, it was later determined that the gauges were
malfunctioning; these gauges were subsequently replaced 2 times. Saltwater corrosion
appeared to be the major factor why the gauges are misreading surface water elevations.
Vegetation monitoring of the site revealed that the Spartina alterniflora (planted in the
lower marsh) was not growing above 1.8-foot elevation. In addition, the Juncus
roemerianus (planted in the upper marsh) also had poor success. Therefore, there is a gap
in vegetation between the 1.8-foot elevation and the scrub-shrub area.
Remediation Evaluation
In November 2000, NCDOT and agency representatives met to discuss problems with the
site. There was general agreement that the site was constructed too high and should be
graded down. However, representatives agreed that tidal data was required before
remediation action could be completed. It was also recommended that a type of
breakwater structure be evaluated.
In the spring 2001, all surface gauges were replaced for a second time. In addition, a tidal
gauge (of different brand than the other gauges) was placed in the Intracoastal. Waterway.
The site was resurveyed to determined true elevations on the site.
In October 2001, NCDOT and agency representatives revisited the site to see the results
of the 2001 data. The field data for 2001 confirmed that part of the site is too high to
support tidal vegetation. The two inlets of the interior channel created by NCDOT have
either filled in some or were not constructed as deep as intended. The "channel" zone of
the site (at elevations from 1.0 to 1.8 feet) has been low enough for vegetation to become
established. On the edge of the site, some erosion from wave action has caused a breach
in the berm. .
The tidal gauge has been more successful in providing reasonable tidal data. This gauge
has been roughly reading a tidal range from 0 to 2 feet.
The Spartina alterniora has been thriving in the channel portion of the site; however,
the marsh grass (Cordgrass and Blackneedle Rush) has been almost non-existent above
the 1.8-foot elevation. The vegetation along the old log road portion of the site has been
thriving only in pockets.
At the last meeting in 2000, several agencies suggested that a breakwater structure be
considered to protect this site. Spencer Rogers with Sea Grant was consulted on this
matter. He visited this site prior to this meeting. His recommendation was to grade the
berm area down and not construct a breakwater structure.
Remediation Recommendations:
Based on the discussion at the October 24 meeting, the following remediation was agreed
to by the meeting attendees:
¦ The berm will be left in place. It is still valuable for protecting the site as a whole.
¦ The central "channel" (created by NCDOT on the site) will not be disturbed. The
vegetation is thriving best in these areas.
¦ The breached area in the berm will be plugged with coastal riprap to minimize
further erosion.
¦ An area between the berm and the internal channel of the site will be graded down to
an elevation range from 1.2 to 1.5 feet.
¦ The area inland from the internal channel will be further graded down to an elevation
range from 1.2 and graded up from there.
¦ The first layer of logs on the old log road will be removed to approximately elevation
1.5 foot.
¦ The main site and the old log road will be connected to open water area between
them.
In addition, the USACE recommended:
¦ Interior channels will be dug to allow additional tidal flow.
The group agreed that no breakwater structure would be constructed at this time. Because
of the changes occurring to the shoreline and berm, monitoring of this shoreline with
photos and stakes (to determine erosion rate) will be included in future monitoring
reports.
NCDOT designed the project according to the agreed upon remediation action. The site
is to be constructed in the Winter 2002 and planted in Spring 2002.

A-W
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
JAMES B. HUNT JR. DAVID MCCOY
GOVERNOR SECRETARY
December 3, 2000
MEMORANDUM TO: File
FROM- Charles R. Cox, P.E. 4-v'-
Project Development and Environmental Analysis Branch
SUBJECT: USMC Marsh Mitigation Site, Onslow County,
TIP Project U-2107M
A meeting was held onsite on November 28, 2000. Those in attendance were:
Scott McLendon USACE
David Timpy USACE
David Cox WRC
Tom McCartney USFWS
John Hennessy DWQ
Kelly Williams DCM
Ron Sechler NMFS
Marty Korenick USMC
Joe Blair Division 3 Construction
Byron Moore REU
Shannon Simpson PD&EA
Charles Cox PD&EA
A month prior to this meeting, PD&EA and the Division had met onsite and determined
that the site did need additional grading to an elevation for better spartina survival. The
spartina in the central channel (at elevation .7 to 1.0 feet) was thriving, but began to die
around elevation 1.7. The plan was to begin at the channel and lower the grade between
the channel and the highest elevation 3.4 to the west. The Division 3 maintenance
personnel were prepared to complete the work in the next few months and then have the
area replanted with marsh grass.
MAILING ADDRESS:
NC DEPARTMENT OF TRANSPORTATION
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS
1548 MAIL SERVICE CENTER
RALEIGH NC 27699-1548
TELEPHONE: [phone]
FAX: [phone]
WEBSITE. WWW.DOH.DOT.STATE.NC.US
LOCATION:
TRANSPORTATION BUILDING
1 SOUTH WLMINGTON STREET
RALEIGH NC
At this November 28 meeting, the agencies were in agreement that the entire site needed
lowering in elevation, not just the area west of the channel. They thought that the channel
was too high and that it would eventually silt in. They wanted to have the berm on the
water's edge removed (since breaches were already damaging the protection potential of
the berm), the channel lowered to allow for low tide, and to create a type of breakwater
just in the waterway. DCM stated that they had some approved designs for breakwaters.
Since adequate tidal data for this area (for low and high tide) is not available, all agencies
present at this meeting agreed that tidal gauges should be installed and monitored for a
few months to determine a low tide elevation. These gauges should have data
downloaded hourly. Also, NCDOT will then redesign the site using the low tide
elevation and will consider some type of armoring of the slope at the water's edge or a
breakwater structure. This work will allow the site to be replanted in spring 2001.
Everyone was in agreement that the extra time was needed to make the site successful.
CRC/cc
?SEArr
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY LYNDO TIPPETT
GOVERNOR SECRETARY
October 25, 2001
MEMO TO: File
FROM: Charles R. Cox, P.E., Natural Systems Engineer lfl?L-
Project Development and Environmental Analysis Branch
SUBJECT: USMC Marsh Mitigation Site, Camp LeJeune, Onslow County,
TIP Project R-2107WM
A meeting was held at the site on October 24, 2001. The focus of this meeting was to
review the design recommendations for remediation. Those in attendance were:
David Timpy USACE
Kelly Williams DCM
Tere Barrett DCM
David Cox WRC
Tom McCartney FWS
Byron Moore REU
Gordon Cashin PD&EA
Phillip Todd PD&EA
„2harles Cox PD&EA
2001 Site Evaluation:
According to field data for 2001, a portion of the site is too high to support tidal
vegetation. The two inlets created by NCDOT have filled in some, but the "channel
zone of the site (at elevations from 1.0 to 1.8 feet) has been low enough for vegetation to
become established. On the edge of the site, some erosion from wave action has caused a
breach in the berm.
Surface water gauge data has still been inconsistent due to the effect of water salinity on
the gauges (causing corrosion to the wire sensors in the gauges). A tidal gauge (of a
different brand) was installed in the spring of this year (and replaced in the summer); this
gauge has been more successful in providing reasonable tidal data. This gauge has been
roughly reading a tidal range from 0 to 2 feet.
MAILING ADDRESS: TELEPHONE: [phone] LOCATION:
NC DEPARTMENT OF TRANSPORTATION - FAX: [phone] - TRANSPORTATION BUILDING
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS 1 SOUTH WILMINGTON STREET
1548 MAIL SERVICE CENTER WEBSITE. WWW.DOH.DOT.STATE.NC.US RALEIGH NC
RALEIGH NC 27699-1548
r
The Smooth Cordgrass has been thriving in the channel portion of the site; however, the
marsh grass (Cordgrass and Blackneedle Rush) has been non-existent above the 1.8-foot
elevation. The vegetation along the old log road portion of the site has been thriving only
in pockets.
At the last meeting in 2000, several agencies suggested that a breakwater structure be
considered to protect this site. Spencer Rogers with Sea Grant was consulted on this
matter. He visited this site prior to this meeting. His recommendation was to grade the
berm area down and not construct a breakwater structure.
Current Recommendations:
Based on the discussion at the October 24 meeting, the following remediation was agreed
to by the meeting attendees (also see attached figure).
The berm will be left in place. It is still valuable for protecting the site as a whole.
¦ The central "channel" (created by NCDOT on the site) and inlets will not be
disturbed. The vegetation is thriving best in these areas.
¦ The breached area in the berm will be plugged with coastal rip rap to minimize
further erosion.
¦ An area between the berm and the internal channel of the site will be graded down to
an elevation range from 1.2 to 1.5 feet.
The area inland from the internal channel will be further graded down to an elevation
range from 1.2 to 1.8 feet.
¦ The first layer of logs on the old log road will be removed to approximately elevation
1.5 foot:
¦ The main site and the old log road will be connected to open water area between
them.
The group agreed that no breakwater structure would be constructed at this time. Because
of the changes occurring to the shoreline and berm, monitoring of this shoreline with
photos and stakes (to determine erosion rate) will be included in future monitoring
reports.
NCDOT will proceed with the construction this winter and the site will be replanted in
the spring of 2002. A refinement of the permit and mitigation plan will likely be
necessary for this work.
CRC/cc
Cc: Meeting Attendees
Scott McLendon, USACE
Ron Sechler, NMFS
John Hennessy, DWQ
Bob Stroud, DCM
Marty Korenek, USMC Camp Lejeune
Joe Blair, P.E., Division 3
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ANNUAL REPORT FOR 2000

U. S. Marine Corps Mitigation Site
Onslow County
Project No. 6.269010T
TIP No. U-2107 WM
AN 3 0 2001
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Prepared By:
Natural Systems Unit & Roadside Environmental Unit
North Carolina Department of Transportation
December 2000

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TABLE OF CONTENTS
SUMMARY ...................................................................................................1
1.0 INTRODUCTION ...................................................................................2
1.1 Project Description ........................................................................2
1.2 Purpose ......................................................................................2
1.3 History ........................................................................................2
2.0 HYDROLOGY .......................................................................................4
2.1 Success Criteria ...................... ......................................................4
2.2 Hydrologic Description ...................................................................4
2.3 Results of Hydrologic Monitoring ......................................................4
2.3.1 Site Data ...................... .....................................................4
2.3.2 Climatic Data ................. .....................................................6
2.4 Conclusions .......................... ....................................................7
3.0 VEGETATION .....................................................................................10
3.1 A Success Criteria (shrub area) ........................................................10
3.1 B Success Criteria (marsh grass area) ...............................................10
3.2 A Description of Planted Areas (shrub area) ........................................10
3.2 B Description of Planted Areas (marsh grass area) ...............................10
3.3 A Results of Vegetation Monitoring (shrub area) ...................................11
3.3 B Results of Vegetation Monitoring (marsh grass area) .......................... 12
3.4 A Conclusions (shrub area) ..............................................................13
3.4 B Conclusions (marsh grass area) .....................................................13
4.0 OVERALL CONCLUSIONS / RECOMMENDATIONS ..................................14
TABLES
TABLE 1 - RESULTS OF HYDROLOGIC MONITORING .......................................6
TABLE 2 - VEGETATION MONITORING RESULTS (shrub area) .......................... 11
TABLE 3 - VEGETATION MONITORING RESULTS (marsh grass area) .................12
FIGURES
FIGURE 1 -SITE LOCATION MAP ....................................................................3
FIGURE 2 - WELL LOCATION
MAP ............................................................................................................5
FIGURE 3 - 2000 HYDROLOGIC MONITORING RESULTS ...................................8

I FIGURE 4 - 30-70 PERCENTILE GRAPH ..........................................................9

APPENDICES
APPENDIX A - DEPTH TO GROUNDWATER GRAPHS ......................................15
APPENDIX B - SITE PHOTOS .......................................................................27
I APPENDIX C -VEGETATION PLANTING PLAN ...............................................30
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SUMMARY
The following report summarizes the monitoring activities that have occurred in the past
year at the U.S. Marine Corps Mitigation Site. This site was constructed in 1999.
Monitoring activities in 2000 represent the second year of monitoring. The site must
demonstrate vegetation success for three years and hydrologic monitoring must be
conducted until success is demonstrated.
The site is monitored with twenty five vegetation plots, three groundwater gauges, four
surface gauges, and one rain gauge.
One mayor change in the hydrologic monitoring process is the installation of an Infinity
rain gauge. This gauge was installed because in the past existing on-site rainfall
gauges have proven unreliable. Daily rainfall recorded at a Trenton rain gauge,
maintained by the NC State Climate Office will be obtained to produce the 30-70
percentile graph. Data from the Infinity rain gauge will be used for comparison on the
groundwater gauge graphs.
Hydrologic monitoring indicates that the site has met success criteria during the1999
monitoring year. All three groundwater gauges met criteria for well over 12.5% of the
growing season and two of the four surface water gauges have shown standing surface
water throughout the growing season. Gauge 1 malfunctioned for most of the growing
season and gauge 7 did not show appreciable surface water during the growing
season.
Vegetation monitoring of the shrub area revealed an average density of 573 shrubs per
acre, well above the minimum requirement. Vegetation monitoring yielded results
below the success criteria in the marsh grass planting transects, although has improved
since 1999.
Based on the monitoring results from the 2000 season and consulting with resource
agencies, NCDOT has determined that remediation of the site is necessary. Grading of
the site will take place in the winter of 2002 and the site will be replanted in the spring of
2002. Tidal data will be obtained by recording the presence of surface water on site
every hour for one month during the growing season in 2001 to determine whether the
site is being flooded twice a day.

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1.0 INTRODUCTION
1.1 Project Description
The U.S. Marine Corp Mitigation Site encompasses 3.5 acres and is located in Onslow
County on the Intracoastal Waterway southeast of Onslow Beach at the Camp Lejeune
Marine Corps Base (Figure 1). Designed as a salt marsh, the site provides
compensatory mitigation for the US 17 Bypass of Jacksonville.
1.2 Purpose
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In order to demonstrate successful mitigation, USMC is monitored for both wetland
vegetation and hydrology. Vegetative monitoring must be conducted for a minimum of
three years, and hydrologic monitoring must be conducted until success is
demonstrated. The following report details the results of hydrologic and vegetative
monitoring during 2000 at the USMC Mitigation Site.
1.3 Project History
March 1999
April 1999
May 1999
March- November 1999
October 1999
March-November 2000
August 2000
Grading Construction
Site planted
Monitoring Wells Installed
Hydrologic Monitoring (1 yr.)
Vegetation Monitoring (1 yr.)
Hydrologic Monitoring (2 yr.)
Vegetation Monitoring (2 yr.)
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2.0 HYDROLOGY
4 2.1 Success Criteria
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Project specifications require
for at least 27 consecutive
reasonably average climatic
wetlands even though the hyd
saturation oy,irh ndation (within 12 inches of the surfa
days durfhg under
conditipns. However, areas may still be classified as
rologydoes not meet optimum wetland criteria.
The growing season in Onslow;`County begins April 8 and ends November 5. These
dates correspond to a 50% probability that air temperatures will drop to 28° F or lower
after April 8 and before November 5.' Thus, the growing season is 212 days. Also,
local climate conditions must represent average conditions for the area.
2.2 Monitoring Procedure
Three monitoring gauges, one rain gauge, and four surface water gauges were installed
on-site in 1999 (Figure 2). The automatic groundwater gauges and rain gauges record
depth to groundwater and rainfall, respectively. Daily readings are taken throughout the
growing season. The rain gauge was replaced in the spring of 2000 with an Infinity
rain gauge.
Appendix A contains a plot of the water depth for each groundwater monitoring gauge
and surface gauge during the growing season. Precipitation events are included on
each groundwater gauge graphs as bars. The precipitation data on each groundwater
gauge graph is from the on-site Infinity rain gauge.
2.3 Results of Hydrologic Monitoring
2.3.1 Site Data
The maximum number of consecutive days that the groundwater was within twelve
inches of the surface was determined for each gauge. This number was converted into
a percentage of the 212-day growing season. Based on project requirements, the
optimum percentage, which represents 27 consecutive days of the growing season, is
12.5%.
Soil Conservation Service, Soil Survey of Johnston County. North Carolina, 1994.
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gauge as well as its percentage range.
Table 1
RESULTS OF HYDROLGIC /ONITOk, NNG 2000
W6 15/10 801%.
G3^ 100.0 Apr. 8 - Nov. 5
G4* ? 100.0 Apr. 8 - Nov. 5
G5* ? 100.0 Apr. 8 - Nov. 5
`*' - Denotes wells which malfunctioned during the growing season; well data is
incomplete.
W- Denotes consecutive days extending into the second half of the growing season.
For 2000, all three groundwater gauges indicate hydrologic data that meets and
exceeds project specifications. Two of the four surface water gauges on the site have
shown appreciable surface water throughout the 2000 growing season. Surface gauge
1 malfunctioned a large portion of the growing season, which rendered the data
received invalid. The July download revealed a dead battery for gauge 1, which was
replaced. Gauge 1 stopped recording each month after that due to a dead battery and
each time the battery was replaced and the gauge reset. On November 7 it was
determined that gauge 1 was not functioning properly and at that time the entire gauge
was replaced and the monitoring intervals reset. Surface gauge 7 showed minimal
surface water throughout the growing season. In order to clearly view daily flooding of
the site, a graph for one week out of the growing season in addition to a graph for the
entire growing season is included for each surface gauge. Figure 3 is a map of the
hydrologic monitoring results for 2000. A blue dot indicates hydrology for greater than
12.5% of the growing season; a red dot means the gauge showed between 8% and
12.5%. A green dot indicates hydrology between 5% and 8% of the season.
2.3.2 Climatic Data
Figure 4 is a comparison of 1999 and 2000 monthly rainfall to historical precipitation for
the area. The two lines represent the 30th and 70th percentiles of monthly precipitation
for Trenton, NC. These percentiles represent monthly rainfall data collected in Trenton
between 1931 and 1998. They are designed to illustrate the "normal range" for rainfall
in the area. The bars are the monthly rainfall totals for 1999 and 2000. The historical
data was collected from a National Climatic Data Center rain gauge; the current
monthly rainfall data was provided by the State Climate Office of North Carolina at NC
State University. Because of data availability, the 2000 rainfall encompasses
rlit precipitation through October.
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Rainfall during 2000 was for the most part average for the Trenton area. The 2001
Annual Monitoring Report will show precipitation totals for the remaining months of
2000.
2.4 Conclusions
In 2000, all three groundwater gauges exceeded project specifications. Although,
according to the surface gauges the site is not receiving substantial flooding to support
the desired vegetation and meet the hydrology success criteria.
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3.0 VEGETATION: USMC MITIGATION SITE (YEAR 2 OF 3)
3.1 A Success Criteria (Shrub Area)
Success Criteria states that there must be a minimum mean density of 320 trees per
acre of approved target species surviving for at least three years
3.1 B Success Criteria (Marsh Grass Area)
The vegetative marsh success of the wetland site will be determined in accordance with
NMFS Guidelines. Monitoring plots found to be located within the open water channel
will not be evaluated, and will not count to the final count of plots. The vegetation
component of the wetland site will be deemed successful if the following criteria are
met.
1. At year five, the average of all plots should have a scale value of 5 (75%
vegetative cover) consisting of wetland herbaceous species, not including
any invasive species.
2. A minimum of 70% of the plots shall contain the target (planted) specie.
3.2A Description of Planted Areas (Shrub Area)
The following plant communities were planted in the Shrub Area:
Zone 1: (approximately 0.56 acres)
Myrica cerifera, Wax Myrtle
Baccharis halimifloia, False Willow
Iva frutescens, Marsh Elder
3.26 Description of Planted Areas (Marsh Grass Area)
The following plant communities were planted in the Marsh Grass Area:
Zone 1: (approximately 0.7acres)
Juncus roemerianus, Black Needle Rush
Zone 2: (approximately 2.23 acres)
Spartina alterniflora, Smooth Cordgrass
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3.3A Results of Vegetation Monitoring (2 year) (Shrub Area)

Table 2
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1 24 8 11 143 151 151 1 573
TOTAL DENSITY 573
To determine shrub density, 50' x 50' plots are installed immediately following planting.
The actual number of planted shrubs which occur within the plot are counted. This
number is equated to the number within each plot, which represents 680 shrubs per
acre (average). The survival monitoring number is compared to the planted number to
obtain survival percentage. This percentage is applied to the 680 shrubs per acre to
obtain an estimated shrub per acre for the site. (Density = monitoring count / planted
shrubs x 680)
Site Notes: Natural propagation seen in Marsh elder species. Wax myrtles have
some salt burn. Patens and juncus present in zone. Alterniflora is present in the
channel. Phragmities on the outer fringe of the site will be treated.

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3.313 Results of Vegetation Monitoring (Marsh Grass Area)
Table 3

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2 7 0.0
2 8 .0
1 9 0.0
2 10 2.0 ? ? 12" Surface Water
2 11 4.0 ? ? 8" Surface Water
2 12 2.0 ? ?
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1 13 5.0 Patens
2 14 5.0 ? ? 2" Surface Water
2 15 3.0 ? ? 6" Surface Water
2 1 4.0 ? ? 6" Surface Water
1 17 3.0 ? ? Black Needle Rush & Patens
2 18 0.0
2 I 0.0
2 20 5.0 ?/ ? 8" Surface Water
2 21 0.0
2 22 3.0 ? ? 6" Surface Water
2 23 5.0 Patens
2 24 2.0 ? ? 6" Surface Water
2 25 0.0
2 26 0.0
2 27 4.0 ? ? 6" Surface Water
2 28 4.0 ? ? 6" Surface Water
1 2 0.0
1 30 0.0
1 31 0.0
2 32 5.0 ? ? 6" Surface Water
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1 37 0.0
2 38 0.0
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1 40 0.0
2 41 4.0 ? ? 4" Surface Water
2 42 0.0
2 4 5.0 Patens
2 44 0.0
2 4 3.0 ? ?

AVG. 1.8

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Plots with Dsdred S
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I Site Notes: Marsh area has grasses present throughout most of the site, and coverage
AL is increasing.
3.4A Conclusions (Shrub Area)
Of the 3.5 acres of this site, approximately 0.56 acres involved shrub planting. There
was 1 test plot established in the planting area. The second year vegetation monitoring
of the planted area revealed an average density to be 573 shrubs per acre, which is
well above the minimum requirement of 320 shrubs per acre. The wax myrtle continue
to show slight salt burn and the marsh elder shrubs are spreading by natural
propagation throughout the shrub area.
1 3.413 Conclusions (Marsh Grass Area)
• Percent Frequency of Target Specie (Black needle rush and Smooth Cordgrass)
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Frequency of 70% required.
• Vegetative Cover Scale Value 1.8
Scale Value of 5 required for year 5.
Of the 3.5 acres of this site, approximately 2.93 acres involved marsh grass planting.
There were 45 random plots established throughout the planting area and located using
GPS. The vegetative coverage and frequency do not meet the success criteria;
however, they have significantly increased since planting.
13
' 4.0 OVERALL CONCLUSIONS/ RECOMMENDATIONS
According to project specifications the hydrology and vegetation of the site have not
demonstrated success. This concludes the second year of vegetation and hydrological
monitoring for the site.
Based on the monitoring results from the 2000 season and consulting with resource
agencies at an on-site meeting November 28, 2000, NCDOT has determined that
remediation of the site is necessary. Grading of the site will take place in the winter of
2002 and the site will be replanted in the spring of 2002. Tidal data will be obtained by
recording the presence of surface water on site every hour for one month during the
growing season in 2001 to determine whether the site is being flooded twice a day.
The three year monitoring period will begin when remediaiton efforts are finished
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APPENDIX A
DEPTH TO GROUNDWATER PLOTS
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Depth to Groundwater (in.)
O CO O A N O Co O A N O N -P? O) CO
08-Apr-00
15-Apr-00
22-Apr-00
29-Apr-00
06-May-00
13-May-00
20-May-00
27-May-00
03-Jun-00
10-Jun-00
17-Jun-00
24-Jun-00
01-J u I-00
08-Jul-00
0-
15-Jul-00 22-Jul-00
29-Jul-00
03-Aug-00
10-Aug-00
17-Aug-00
24-Aug-00
31-Aug-00
07-Sep-00
14-Sep-00
21-Sep-00
28-Sep-00
05-Oct-00
12-Oct-00
19-Oct-00
26-Oct-00
02-Nov-00
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Precipitation (in.)
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Depth to Groundwater (in.)
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O CO rn ? N O CO rn -P, N O N A O W
08-Apr-00
15-Apr-00
22-Apr-00
29-Apr-00
06-May-00
13-May-00
20-May-00
27-May-00
03-Jun-00
10-Jun-00
17-Jun-00
24-Jun-00
01-J u I-00
08-J u I-00
15-J u I-00
22-Jul-00
29-Jul-00
03-Aug-00
10-Aug-00
17-Aug-00
24-Aug-00
31-Aug-00
07-Sep-00
14-Sep-00
21-Sep-00
28-Sep-00
05-Oct-00
12-Oct-00
19-Oct-00
26-Oct-00
02-Nov-00
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08-Apr-00
15-Apr-00
22-Apr-00
29-Apr-00
06-May-00
13-May-00
20-May-00
27-May-00
03-Jun-00
10-Jun-00
17-Jun-00
24-Jun-00
01-J u I-00
08-Jul-00
15-J u I-00
22-Jul-00
29-Jul-00 rl?
03-Aug-00
10-Aug-00
17-Aug-00
24-Aug-00
31-Aug-00
07-Sep-00
14-Sep-00
21-Sep-00
28-Sep-00
05-Oct-00
12-Oct-00
19-Oct-00
26-Oct-00
02-Nov-00
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Precipitation (in.)

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08-Apr-00
14-Apr-00
21-Apr-00
27-Apr-00
04-May-00
11-May-00
17-May-00
24-May-00
31-May-00
06-Jun-00
13-Jun-00
19-Jun-00
26-Jun-00
03-Jul-00
09-Jul-00
16-Jul-00
22-Jul-00
29-Jul-00
05-Aug-00
11-Aug-00
18-Aug-00
25-Aug-00
31-Aug-00
07-Sep-00
13-Sep-00
20-Sep-00
27-Sep-00
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14-Apr-00
14-Apr-00
14-Apr-00
14-Apr-00
15-Apr-00
15-Apr-00
15-Apr-00
15-Apr-00
16-Apr-00
16-Apr-00
16-Apr-00
16-Apr-00
17-Apr-00
17-Apr-00
17-Apr-00
17-Apr-00
18-Apr-00
18-Apr-00
18-Apr-00
18-Apr-00
19-Apr-00
19-Apr-00
19-Apr-00
19-Apr-00
20-Apr-00
20-Apr-00
20-Apr-00
20-Apr-00
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08-Apr-00
14-Apr-00
21-Apr-00
28-Apr-00
05-May-00
12-May-00
19-May-00
26-May-00
02-Jun-00
08-Jun-00
15-Jun-00
22-Jun-00
29-Jun-00
06-Jul-00
13-Jul-00
20-Jul-00
27-Jul-00
02-Aug-00
09-Aug-00
16-Aug-00
23-Aug-00
30-Aug-00
06-Sep-00
13-Sep-00
20-Sep-00
26-Sep-00
03-Oct-00
02-Oct-00
09-Oct-00
16-Oct-00
23-Oct-00
30-Oct-00
N
C
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0 N
n
CD
n
? N
C
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Surface Water Depth (in.)
J .1 J J
N A O Co O N rn
N
N
v
m
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14-Apr-00
14-Apr-00
14-Apr-00
14-Apr-00
15-Apr-00
15-Apr-00
15-Apr-00
15-Apr-00
16-Apr-00
16-Apr-00
16-Apr-00
16-Apr-00
17-Apr-00
17-Apr-00
17-Apr-00
17-Apr-00
18-Apr-00
18-Apr-00
18-Apr-00
18-Apr-00
19-Apr-00
19-Apr-00
19-Apr-00
19-Apr-00
20-Apr-00
20-Apr-00
20-Apr-00
20-Apr-00
N
c
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0
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Depth of Surface Water (in.)
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W
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08-Apr-00
14-Apr-00
21-Apr-00
28-Apr-00
05-May-00
12-May-00
19-May-00
26-May-00
02-Jun-00
08-Jun-00
15-Jun-00
22-Jun-00
29-Jun-00
06-Jul-00
13-Jul-00
20-Jul-00
27-Jul-00
02-Aug-00
09-Aug-00
16-Aug-00
23-Aug-00
30-Aug-00
06-Sep-00
13-Sep-00
20-Sep-00
26-Sep-00
03-Oct-00
03-Oct-00
09-Oct-00
16-Oct-00
23-Oct-00
30-Oct-00
C
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Surface Water Depth (in.)
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14-Apr-00
14-Apr-00
14-Apr-00
14-Apr-00
15-Apr-00
15-Apr-00
15-Apr-00
15-Apr-00
16-Apr-00
16-Apr-00
16-Apr-00
16-Apr-00
17-Apr-00
17-Apr-00
17-Apr-00
17-Apr-00
18-Apr-00
18-Apr-00
18-Apr-00
18-Apr-00
19-Apr-00
19-Apr-00
19-Apr-00
19-Apr-00
20-Apr-00
20-Apr-00
20-Apr-00
20-Apr-00
N
c
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n N
n
cc
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08-Apr-00
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12-May-00
19-May-00
26-May-00
02-Jun-00
08-Jun-00
15-Jun-00
22-Jun-00
29-Jun-00
06-Jul-00
13-Jul-00
20-Jul-00
27-Jul-00
02-Aug-00
09-Aug-00
16-Aug-00
23-Aug-00
30-Aug-00
06-Sep-00
13-Sep-00
20-Sep-00
26-Sep-00
03-Oct-00
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09-Oct-00
16-Oct-00
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14-Apr-00
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14-Apr-00
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15-Apr-00
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16-Apr-00
16-Apr-00
16-Apr-00
17-Apr-00
17-Apr-00
17-Apr-00
17-Apr-00
18-Apr-00
18-Apr-00
18-Apr-00
18-Apr-00
19-Apr-00
19-Apr-00
19-Apr-00
19-Apr-00
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