NCDOT 7-98 Minor Mod US 264 Croatan Sound, Spencer Creek 2

Perthit Class Permit Number ,
MODIFICATION/MINOR 7-98 ,
STATE OF NORTH CAROLINA
Department of Environment and Natural Resources ,
and
Coastal Resources Commission
1 411 trnitt , /
/
/
X for
Major Develo t' an Area of Environmental Concern
pursuant to 3A-118 .
X Excavation and r ' gp�us�uanEto NCGS 113-229
/
Issued to N.C. Dept. of Transportation, P.O. ot,5 1, Ra ' h, NC 27611
• authorizing development in Dare County ,Croat, Sound and Spencer Creek, US 64-264, ,
Manns Harbor to Manteo �' it letter dated 4n/99,including attached
, as requested in the permittee a &ratio d
' workplan drawings, 2-4 of 8, all fated 4/99, and 5-8 of 8 at 3 9. /
/ /
, This permit, issued on 5/2 o,/9 ,is subject ompliance with the application(where consistent
with the permit),all applicable regulations, special conditions and notes set forth below. Any violation of these terms may
be subject to-a fine,imprisonment or civil action; or may cause the permit to be null and void.
-
_/ I
1) This minor modification authorizes the construction of a surface water collection system
immediately north of the authorized roadway fill between stations 32+80 and 34+40 (approximate),
s' and the construction of a +/- 1.4 acre mitigation site between stations 12+00 and 16+00
(approximate),all as depicted in the attached workplan drawings and the 4/7/99 modification request '
/
letter.
/
2) This minor modification shall be attached to the Major Modification of Permit No. 7-98, which was
issued on 9/23/98, as well as all subsequent modifications and refinements, and all documents,
including the 4/7/99 modification request letter, must be readily available on site when a Division '
representative inspects the project for compliance. '
/
/
, 3) All stipulations and conditions of the active permit remain in force under this modification unless ,
altered herein.
/ (See attached sheet for Additional Conditions) ,
' This permit action may be appealed by the permittee or Signed by the authority of the Secretary of DENR and the '
' other qualified persons within twenty (20) days of the Chairman of the Coastal Resources Commission. '
' issuing date.An appeal requires resolution prior to work '
' initiation or continuance, as the case may be. /
This permit must be accessible on-site to Department ,:,9 �/(-/4
/
personnel when the project is inspected for compliance.
Donna D.Moffitt,Director
, Any maintenance work or project modification not Division of Coastal Management /
/ covered hereunder requires further Departmental approval.
All work must cease when thepermit expires on This permit and its conditions are hereby accepted.
December 31, 2001
,
In issuing this permit,the State of North Carolina agrees
that your project is consistent with the North Carolina . C _ tk,* 0 .I. Ga^i42 ,
Coastal Management Program. Signature of Permittee '
oxoxoeoNoc

N.C. Dept. Of Transportation Permit#7-98
Page 2 of 2
ADDI //AL CONDITIONS
NOTE: The N.C. Division of �f- Quality "'prized the authorized modification by way of a
5/17/99 modification to W rQualzt5 Certification No. 3167 (DWQ Project No.
x 199702334). %,—
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APR 12 1999
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
JAMES B. HUNT JR. E. NORRIS TOLSON
GOVERNOR SECRETARY
April 7, 1999
Charles Jones, Assistant Director
Division of Coastal Management
Hestron Plaza II
151-B Highway 24
Morehead City,North Carolina
Dear Mr. Jones:
SUBJECT: Proposed Refinement to CAMA Major Development Permit No.
7-98 (Issued on January 20, 1998, Previously Modified September
23, 1998): the Improvements to US 64-264, Including the Construction of
a New Croatan Sound Bridge, from West of Manns Harbor to NC 345,
South of Manteo, in Dare County; Federal Aid Project No. NHF-64 (6);
State Project No. 8.T051401; TIP No. R-2551
The Department of Transportation has determined that it must modify its original
provisions for surface drainage along the highway right of way in the vicinity of White's
Store and adjacent residential properties. The previous design called for collecting this
stormwater and conveying it along a new drainage ditch to a point south of Boat Ramp
Road where it would be discharged into the open surface waters of a canal.
Since this original proposal would have required a permanent drainage easement (PDE)
through private properties, and since the properties to be affected by the discharge are
relatively small parcels, the drainage encroachment was considered to be overly intrusive.
In addition, the surface water would have been discharged into an open waterway after
being conveyed through a vegetated ditch. Since the ditch probably would have been
maintained as an extension of the adjacent lawnscapes, and the groundcover would
probably have been kept closely cut; it would have served as a poor filter of the
stormwater while in route to its ultimate discharge. Unfortunately, this same ditch would
have been a fairly efficient conduit for the transport of lawn nutrients to the canal.
The existing design proposes to collect surface water at discrete drop inlets along the
right of way and to convey the effluent to a small drainage ditch to be constructed
immediately north of the proposed roadway fill between Stations (+/-) 32+80 and 34+40
(Figures 6-8).
P.O. Box 850, Edenton, NC 27932 [phone] Fax: [phone]

' Page 2
•
April 7, 1999
Charles Jones
The proposed design revision will result in a small increase in wetland impacts. The
additional impacts will occur in a scrub-shrub/emergent wetland, which lies immediately
adjacent to the residentially developed portion of Manns Harbor. Anticipated impacts
will actually occur along a narrow fringe of this community, which is dominated by saw
grass (Cladium jamaicense) and pond pine (Pinus serotina) interspersed with bays
(Persia borbonia, Myrica cerifera, etc.). These additional impacts will result from newly
proposed fill (0.09 acre) and newly proposed excavation (0.12 acre), totaling 0.21 acre of
additional impacts. Please note that, in the interest of minimization, the Department has
eliminated the 10-foot wide mechanized clearing zone along the entire length of the
proposed ditch.
Compensatory Mitigation Proposal
In order to compensate for the loss of an additional 0.21 acre of this wetland, the
Department proposes to convert a section of roadway (including roadside shoulders and
fill slopes) to saw grass marsh by removing the underlying pavement and aggregate base,
and grading to natural wetland elevation. This portion of roadway is being replaced by a
new location segment that will provide eastbound US 64 traffic with a continuous
movement through the US 64-264 intersection at Gateway (Figures 2-5). The proposed
restoration area approximates 1.4 acres in surface area and is located north and west of
the proposed roadway between Stations (+/-) 12+00 and 16+00 (Figures 2-5).
Following appropriate site preparation, including, but not limited to scarification of
subsoil and top-dressing with several inches of an organic surface layer', the Department
proposes to establish an emergent wetland community comprised of saw grass. The
natural landscape surrounding the restoration area is composed predominately of saw
grass marsh. The reference ecosystem is the marsh complex lying adjacent to the
roadside canal north of US 64-264 immediately east of Gateway (Figure 3). Saw grass
clumps (2-3 stems per clump), to be obtained from a local source, will be planted at
intervals of 30" (on centers) throughout the restoration area.
Replicating the hydrology of the adjacent emergent community (reference ecosystem)
should be a matter of establishing the appropriate surface elevations across the site
followed by site preparation to loosen any tightly compacted soil zones. Emphasis will be
given to limiting heavy equipment operation to the bare minimum required to get the job
done followed by loosening up the substrate through scarification, etc.
Hydrological and vegetation monitoring will be conducted for a period of 5 years. The
hydrological success criterion dictates that the groundwater table must occur within the
top 12 inches of the soil profile for at least 12.5% of the growing season, consecutively.
Vegetation success will have been achieved when, at the end of the monitoring period,
'The Department will specify that sufficient organic waste from the undercut of adjacent saw grass marsh
(an activity authorized under the existing DOA/401/CAMA permits)shall be stockpiled at an upland site to
be used as top-dressing in the on-site marsh restoration area.

Page 3
• April 7, 1999 APR 1 2 1999
Charles Jones
more than 50% of individual plants have survived and are growing, or growth of planted
species has achieved aerial coverage of at least 75% of the site. If necessary, as indicated
by monitoring data, appropriate remedial actions shall be undertaken by the Department
as approved and directed by the USACE in consultation with partner agencies, including
the Division of Coastal Management.
Unfortunately, it is anticipated that implementation of the on-site wetland restoration
effort will not be able to get underway until late winter/early spring 2002 due to conflicts
with on-going construction activities and traffic staging during various construction
phases of the roadway project. This project is somewhat more complex than the "typical"
roadway project by virtue of the complicated staging that will be necessitated by de-
watering and concomitant shoring requirements that will be pre-requisite to maintaining
traffic flows throughout the construction interval.
Your consideration is requested in processing this proposal as a refinement, or a minor
modification. An expedited approval NLT mid-May is essential to meeting critical
project scheduling. Please call me if I can provide any additional information. This
office will cooperate in any way necessary to assist in expediting this request. A check for
$50.00 is enclosed to cover the cost of processing of the Minor Modification.
Thank you for your time and cooperation.
Sincerely,
.4/M4'/
M. Randall Turner, Senior Environmental Officer
Project Development & Environmental Analysis
Enclosures
Cc: Michael F. Bell, USACE
David R. Cox,NCWRC
Tom McCartney, USFWS
John Hennessey,NCDWQ
Sara Winslow,NCDMF
Ron Sechler,NMFS
Randy Wise, P.E.,NCDOT
D. R. Conner, P.E.,NCDOT
William D. Gilmore, P.E.,NCDOT

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.25 21 .
MEMORANDUM:
TO: John Parker, Major Permit Coordinator, DCM
THROUGH: Charles S. Jones, Assistant Director, DCM
FROM: Frank A. Jennings, III, DCM
SUBJECT: NCDOT Modification Request for CAMA Major Permit No. 7-98,
Modification II
DATE: April 20, 1999
The NCDOT is requesting a modification of CAMA Major Permit No. 7-98, Croatan
Sound Bridge, Dare County to change the original surface drainage plan. The modification
proposal is for a drainage ditch to be excavated through the marsh area adjacent to and north
of a permitted fill area located on the north side to US 64/264 and approximately 1200 ft. west
of the intersection of US 64/264 and Shipyard Road (SR 1104). The proposed area of impact
is 0.21 acres and is depicted on workplans #6 and #7 as the double hatched areas and labeled,
"denotes excavation in wetlands". The proposed area of development is a coastal wetland area
of environmental concern and is vegetated mostly with Cladium jamaicense. A compensatory
mitigation plan is proposed at a compensation rate of roughly 6:1. The modification request
with workplans are enclosed.
It is recommended that the proposed modification be approved and that all existing
permit conditions be applied to the modification request.
RECEIVED
APR 2 31999
COASTAL MANAGEMENT
North Carolina Department of Environment and Natural Resources • James B.Hunt Jr.,Governor • Wayne McDevitt,Secretary
Division of Coastal Management • Donna D.Moffitt,Director
Elizabeth City Office • 1367 US 17 South • Elizabeth City,NC 27909 • Phone [phone]

STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION t
WARRANT NO 5 2 4 0
641-1 - -
VOUCHER VOUCHER
NUMBER DATE INVOICE 5240
NUMBER INVOICE
DATE INVOICE
AMOUNT
04/08/99 0408091145
04/07/99
50. 00
Total Paid to:
• NCDENR
50. 00
STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
WARRANT NO 5240
DIVISION ONE OFFICE 5240
P. 0. BOX 850
EDENTON, NC, 27932
42
PRESENT TO:STATE TREASURER 66-1059/531 g
PAYABLE AT PAR THROUGH m
FEDERAL
ESERVE SYSTEM
v
5
17 SOUTH H CITY 0 08/99 $50. 00
, NC 27909
005 20 ■ 1:053 1 105i: 1m_ _ 000��f64 1u■
----

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�$T OF
e F� DEPARTMENT OF THE ARMY
a \2 WILMINGTON DISTRICT, CORPS OF ENGINEERS
c qpi;'' it P.O.BOX 1890
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, �`�P WILMINGTON,NORTH CAROLINA 28402-1890
'',4r/S May 14, 1999
IN REPLY REFER TO
Regulatory Division
Action ID No. 199502334
Mr. William D. Gilmore, P.E., Manager
Planning and Environmental Branch
North Carolina Department of Transportation 1 - fl V
Post Office Box 25201 .
Raleigh,North Carolina 27611-5201
Dear Mr. Gilmore:
Reference the Department of the Army (DA)permit issued to you on March 5, 1998
associated with the widening of approximately 10 miles of U.S. 64-264, including constructing a
new bridge over the Croatan Sound and adjacent marshes, from US 64-264 West of Manns
Harbor to NC 345 South of Manteo, in Dare County,North Carolina (TIP No. R-2551, Federal
Aid Project No. NHF-64(6), State Project No. 8.T051401). Also reference your subsequent
written request dated April 7, 1999 for a permit modification to:
a. Fill an additional 0.09 acres of Section 404 Wetlands and excavate 0.12 acres of Section
404 Wetlands adjacent to the Croatan Sound for a drainage system to collect surface water at
discrete drop inlets along the right of way and to convey the effluent to a small drainage ditch to
be constructed immediately north of the proposed roadway fill between Stations (+/-) 32+80 and
34+40 (See Attached Figures 6-8).
b. Restore 1.4 acres of sawgrass marsh(Cladium jamaicense) wetlands by converting'a
section of roadway (including roadside shoulders and fill slopes) to marsh by removing the
underlying pavement and aggregate base, and grading to natural wetland elevation. This section
of roadway was constructed in marsh and will be abandoned by the permittee after the new road
is constructed (See Attached Figures 2-5). The proposed restoration area is located north and
west of the permitted roadway between Stations (+/-) 12+00 and 16+00. This wetland
restoration is provided to compensate for the wetland losses described in(a.) above.
RECEIVED
, JUN O 1 -1999
COASTAL MANAGEMENT

r
2
According to the permittee, the original proposal would have required a permanent drainage
easement through private properties, and since the properties to be affected by the discharges are
relatively small parcels, the drainage encroachment was considered to be overly intrusive.
This modification request was coordinated at the April 15, 1999 Corps/NCDOT meeting
with the North Carolina Division of Water Quality, and other appropriate State and Federal
agencies. This coordination revealed no objections to this modification request. In addition, I
have determined that the proposed mitigation compensates for the wetland impacts. Therefore,
the permit is hereby modified in accordance with the specific work activities described above and
in accordance with the mitigation commitments in the April 7, 1999 modification request. It is
understood that all conditions of the original permit remain applicable and that the expiration
date is unchanged. In addition, the permittee will comply with the following special permit
conditions:
kk. The restoration work associated with this permit modification will be undertaken
pursuant to the "Compensatory Mitigation Proposal" in the permit modification request dated
April 7, 1999, and implemented concurrently with the final phases of construction activities
authorized by the permit to the extent necessary to construct, monitor and maintain 1.4 acres of
riverine marsh wetlands to the satisfaction of the Corps of Engineers.
11. The mitigation property will be maintained by the permittee in its natural condition, as
altered by the implementation of the April 7, 1999 mitigation proposal, in perpetuity. Prohibited
activities within the mitigation areas specifically include, but are not limited to, the construction
or placement of buildings, signs, or any debris, waste or garbage; excavation, grading; dredging;
leveling or other earth moving activity; cutting, removal or damage of any vegetation; any
activity which would impact the drainage or water quality on the site; except as required by the
implementation of the mitigation plan or subsequent modifications which are approved by the
Corps of Engineers.
mm. Condition (11.) above runs with the land. The permittee shall not sell, lease, or otherwise
convey any interest in the property making up the mitigation site without first providing 60 days
written notice to the Corps of Engineers. The instrument effecting such conveyance shall include
legally binding restrictions on the use of the mitigation property as described in conditions
above, to be enforceable by the permittee as well as the U.S. Army Corps of Engineers,
Wilmington District. The instrument establishing such restrictions shall be subject to the
approval of the Corps of Engineers. The permittee shall enforce the terms of the required
restrictions.
nn. The permittee shall make every effort to convey the 1.4 acres of the April 7, 1999
wetland restoration property to a nonprofit conservation organization or a natural resource
agency, which is willing to hold the areas in perpetuity for conservation purposes, and is
acceptable to the Corps of Engineers. The annual monitoring reports will include the statues of
the conveyance efforts.

3
oo. The permittee shall contact the Corps of Engineers, Washington Regulatory Field Office
NCDOT Regulatory Project Manager and provide him with the opportunity to attend the yearly
mitigation monitoring efforts.
pp. The permittee will submit the yearly mitigation monitoring reports by December 31 of
each monitoring year.
qq. Hydrology in the restoration areas will be monitored through the use of monitoring wells
during each growing season for the first five years of the vegetative monitoring. A minimum of
two wells will be placed within the 1.4 acre wetland restoration area.
rr. To meet the hydrology success criteria, the monitoring data must show that for each
normal precipitation year within the monitoring period, the site has been inundated or saturated
within the upper 12 inches of soil for a minimum of 25 % of the growing season. WET tables
for Dare County will be utilized to determine normal precipitation years.
ss. Phragmites (Phragmites australis) will be killed or removed from the restoration area. The
annual monitoring report will address all Phragmites removal activities.
tt. Prior to the commencement of any drainage work associated with this modification
request, the permittee shall conduct a soils boring test within the restoration area to determine the
depth of undercut and the type and amount of fill material used for road construction. A report
summarizing the findings from the soils boring test will be submitted to the Corps of Engineers
for review and comment. The amount of fill material to be removed prior to restoration efforts
will be coordinated with the Corps of Engineers.
Any questions regarding this correspondence may be directed to Mr. Michael Bell, NCDOT
Coordinator/Regulatory Project Manager at the Washington Regulatory Field Office, telephone
[phone], extension 26.
Sincerely,
Terry R. Youngbluth
Colonel, U.S. Army
District Engineer
Enclosures

4
Copies Furnished:
Mr. Randall Turner Mr. Larry Hardy
N.C. Department of Transportation National Marine Fisheries Service
Division I Environmental Officer Pivers Island
113 Airport Drive, Suite 100 Beaufort, North Carolina 28516
Post Office Box 850
Edenton, North Carolina 27932 Mr. John M. Hefner
U.S. Fish and Wildlife Service
Mr. John Parker Fish and Wildlife Enhancement
Division of Coastal Management Post Office Box 33726
N.C. Department of Environment Raleigh, North Carolina 27636-3726
and Natural Resources
/Post Office Box 27687 Mr. William L. Cox, Chief
Raleigh, North Carolina 27611-7687 Wetlands Protection Section- Region IV
Water Management Division
Mr. John Dorney U.S. Environmental Protection Agency
Division of Water 61 Forsyth Street
N.C. Department of Environment Atlanta, Georgia 30303
and Natural Resources
Wetlands and Aquatic Plants
4401 Reedy Creek Road
Raleigh,North Carolina 27607

05/17/99 13:47 $919 733 9959 NC DEM WQ ENVSCI Cl002
State of North Carolina
Department of EnvironmentAl ci 4 4 is,
and Natural Resources •
Division of Water Quality
James B. Hunt, Jr., Governor NCDENR
Wayne McDevitt, Secretary
NORTi CAROLJNA DEPARTMENT Or
Kerr T. Stevens, Director ENVIRONMENT AND NATURAL- RESOURCES
March 9, 1999
Mr. Bill Gilmore,RE., Manager
Planning &Environmental Branch
N.C. Department of Transportation
PO Box 25201
Raleigh,NC 27611-5201
Dear Mr. Gilmore
Re: Certification Pursuant to Section 401 of the Federal Clean Water Act,
Proposed New Croatan Bridge/Manteo Bypass, lit R-255 I,WQC Project#970856,
COE# 199702334
Dare County
Attached hereto is a modification to Certification No. 3167 issued to the North Carolina
Department of Transportation dated May 17, 1999 (original Certification was dated August
19, 1998). The attached modification authorizes an additional fill to 0.09 acres of wetlands
and excavation to 0.12 acres of wetlands. It should be noted the modification is applicable
only to the additional proposed activities. All the authorized activities and conditions of
certification associated with the original Water Quality Certification dated August 19, 1998
still apply. In addition, the Department of Transportation agrees to mitigate the impacted
0.21 acres of wetland by restoring 1.4 acres of wetlands as described in the attached
Mitigation Proposal submitted with the permit application dated April 7, 1999.
If we can be of further assistance,do not hesitate to contact us.
S' ereI
tit
Stevens
Attachments:
Modification to WQC No. 5167
cc: Wilmington District Corps of Engineers
Corps of Engineers Washington Field Office
Washington DWQ Regional Office
Mr. John Domey
Mr. John Parker,Division of Coastal Management
Central Files
Division of Water Quality • Environmental Sciences Branch
Enviro. Sciences Branch,4401 Reedy Creek Rc1-, Raleigh,NC 27607 Telephone [phone] FAX n 733-9959
An Equal Opportunity Affirmative Action Employer • 50% recycled/10%post consumer paper

05/17/99 13: 48 $919 733 9959 NC DEM WQ ENVSCI i003
NORTH CAROLINA 401 WA. ER QUALITY CER i'IFICATION
THIS CERTIFICATION is issued in conformity with the requirements of Section 401
Public Laws 92-500 and 95-217 of the United States and subject to the North Carolina Division
of Water Quality (DWQ)Regulations in 15 NCAC 2H,Section .0500. It is issueh to the NC
DOT resulting in 0.21 acres of wetland impact in Dare County pursuant to revised application
filed on the 7' day of April 1999 to construct the Manteo Bypass/New Croatan Sound Bridge_
The application provides adequate assurance that the discharge of fill material into the
proposed wetlands in conjunction with the proposed development will not result in a violation of
applicable Water Quality Standards and discharge guidelines. Therefore, the State of North
Carolina certifies that this activity will not violate the applicable portions of Sections 301, 302,
303,306, 307 of PL 92-500 and FL 95-217 if conducted in accordance with the application and
conditions hereinafter set forth_
This approval is only valid for the purpose and design that you submitted in your
application for modification. If you change your project,you must notify us and send us a new
application fora 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) (6)and(7). For this
approval to be valid,you must follow the conditions listed below. 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,Coastal Stormwater,Non-discharge and Water Supply
watershed regulations.
Condition(s)of Certification:
1. Appropriate sediment and erosion control practices which equal or exceed those
outlined in the most recent version of two manuals- Either the "North Carolina
Sediment and Erosion Control Planning and Design Manual" or the "North Carolina
Surface Mining Manual" (available from the Division of Land Resources in the
DES Regional or Central Offices). The control practices shall be utilized to prevent
exceedances of the appropriate turbidity water quality standard(50 NTUs in all fresh
water strerns and rivers not designated as trout waters; 25 NTUs in all lakes and
reservoirs,and all saltwater classes; and 10 NTUs in trout waters);
2. All sediment and erosion control measures placed in wetlands or waters shall be
removed and the natural grade restored after the Division of Land Resources has
released the project;
3. Measures shall be taken to prevent live or fresh concrete from coming into contact with
waters of the state until the concrete has hardened;
4. Should waste or borrow sites be located in wetlands or other waters, compensatory
mitigation will be required since it is a direct impact from road construction activities;
5. Compensatory mitigation shall be done in accordance with the Mitigation Proposal
submitted with your modification request and attached hereto. i.)WQ shall be copied on
a detailed mitigation and monitoring plans as well as the annual reports for the entire

05/17/99 13:48 T2919 733 9959 NC DEN WQ ENVSCI a 004
Page 2
,. . April 7, 1999
Michael F.Bell
The proposed design revision will result in a cmall increase in wetland impacts. The
additional impacts will occur in a scrub-shrubiemergent wetland,which lies immediately
adjacent to the residentially developed portion of Maims Harbor. Anticipate impacts
will actually occur along a narrow fringe of this community,which is dominated by saw
grass (Cladium jamakerse) and pond pine (Pines serotina) interspersed with bays
(Persia borbonia,Nfyrica cerifera,etc.).These additional impacts will result from newly
proposed fill(0.09 acre) and newly proposed excavation(0.12 acre),totaling 0 21 acre of
additional impacts. Please note that in the nteteSt of ninimi7ltion, the Department has
eliminated the 10-foot wide meci-sized c earng zone alone the entire length of the
proposed ditch.
Comveasatory Ividsaarion Peonosal
In order to compensate for the loss of an additional 0.21 acre of this wetland, the
Department proposes to convert a section of roadway(including roadside shoulders and
fill slopes)to saw gass marsh by removing the underlying pavement and aggegate base,
and e,to natural wetland elevation.This portion of roadway is being replaced by a
► -
new location semneat that will provide eastbound US 64 w- c w th a continuous
movement through the US 64-264 intersection at Gateway (Figures 2-5). The proposed
restoration area approxirmates 1.4 acres in surface area and is located north and west of
the proposed roadway between Stations(=1-)12+00 and 16+00(Figures 2-5).
Following appropriate site preparation, including, but not limited to scarification of
subsoil and top-dressing with several inches of an organic surface layer',the Department
proposes to establish an emergent wetland community comprised of saw grass. The
nartrtal landscape surrounding the restoration area is composed predominately of saw
grass marsh. The refwmce ecosystem is the marsh complex lying adjacent to the
roadside canal north of T.S 64-264 immediately east of Gateway(Figure 3). Saw grass .
clumps (2-3 sterns per clump), to be obtained from a local source, will be planted at
intervals of 30"(on centers)throu_*lout the restoration area.
Replicating the hydrology of the adjacent emergent community (reference ecosystem)
should be a matter of establishing the appropriate surface elevations across the site
followed by site preparation to loosen any tightly compacted soil zones.Emphasis will be
• given to limiting heavy equipment operation.to,the bare minimum required to get the job
done followed by loosening up the substrate through scarification,etc.
Hydrological and vegetation monitoring will be conducted for a period of 5 years. The
hydroio cal success criterion dicmes that the groundwater table must occur within the
top 12 inches of the soil profile for at least 12 5%of the vowing season,consecutively.
Vegetation success will have been achieved when, ar the end of the monitoring period,
'The Department will specify at mfic.t organic=.ste h'ot:.=e undercut of adiaceat saw grass =•sh
(au activity authorized under e existing DO:401iC ALA perss)shall be stockpiled at an upland site to
be used as top-dresses in the n site=zt:moraaon ar^.