20130455 Ver 1_Year 4 Monitoring Report 2017_20180102

Monitoring Report
Twin Bays Wetland Restoration Site
DMS Contract 004739
DMS Project Number 95363
Duplin County, NC
CU# 03030007
DWR# 2013-0455
SAW# 2012-01385
r T , • t 7 A I
Prepared for:
NCDMS, 1652 Mail Service Center, Raleigh, NC 27699-1652
Construction Completed: March 2014
Data Collection: 2017
Submitted: January 2018

Design and Monitoring Firm
KCI
ASSOCIATES OF NC
4505 Falls of Neuse Road
Suite 400
Raleigh, NC 27609
Phone: [phone]
Fax: [phone]
Project Contact: Tim Morris
Email: tim.morris(a)kci.com
KCI Project No: 20122265

PAT MCCRORY
Governor
3,r
DONALD R. VAN DER VAART
Secretary
Mitigation Services
ENV I RONMENTAL QUALITY
January 29, 2018
Adam Spiller
KCI Associates of NC
Sent via email to [e-mail]
Subject: Monitoring Report Year 4 Comments for
Twin Bays, Project # 95363, Contract 004739
Cape Fear Basin — CU# 03030007, Duplin County, North Carolina
Mr. Spiller:
On January 12, 2017, the Division of Mitigation Services (DMS) received the Draft Monitoring Report for
Bowl Basin and a site visit is planned for February 19th. After reviewing the document, please make the
following updates to finalize:
• Please add the Project County, CU, DWR (DWR-2013-0455), and USACE (SAW -2012-01385)
numbers for this project on the cover page.
• Page 2, section 2.1: The vegetation monitoring indicates that success is 288 stems per acre at
year four. This is not in the mitigation plan, and vegetation was not monitored this year. Please
remove that success reference.
• Page 3, section 2.2 last paragraph: The text indicates that 3 out of 19 did not meet hydrology,
when two of these gauges were not in non-credit bearing areas (no success criteria for these
gauges). Revise accordingly to indicate which gauges have success criteria and which do not.
• Suggest revising all Table 9 to not indicate Yes or No for meeting hydrology on gauges in the
non-credit areas. These boxes should just include the hydroperiod (%) and number of days.
Following any site visit discussion, please submit 3 hard copies and an electronic copy of the final report.
Thanks for your work,
Lindsay Crocker, DMS
State of North Carolina I Environmental Quality I Mitigation Services
1652 Mail Service Center 1217 W. Jones Street, Suite 3000 I Raleigh, NC 27609-1652
919 707 8976 T

TABLE OF CONTENTS
1.0 EXECUTIVE SUMMARY/PROJECT ABSTRACT................................................................1
2.0 MONITORING RESULTS..........................................................................................................2
2.1 Vegetation Monitoring..............................................................................................................2
2.2 Hydrology Monitoring..............................................................................................................2
3.0 METHODOLOGY.......................................................................................................................3
4.0 REFERENCES.............................................................................................................................3
Appendix A — Project Vicinity Map and Background Tables
Figure1. Project Site Vicinity Map............................................................................................................. 5
Table1 —Project Components.....................................................................................................................6
Table 2 — Project Activity and Reporting History....................................................................................... 7
Table3 —Project Contacts........................................................................................................................... 8
Table4 — Project Attributes......................................................................................................................... 9
Appendix B — Visual Assessment Data
Figure 2. Current Condition Plan View..................................................................................................... 11
Table 5 — Vegetation Condition Assessment............................................................................................. 12
PhotoPoint Photos..................................................................................................................................... 13
Appendix C — Hydrologic Data
30-70 Percentile Graph.............................................................................................................................. 18
Precipitation and Water Level Plots........................................................................................................... 19
Table 9 — Wetland Hydrology Criteria Attainment.................................................................................... 38
Twin Bays Wetland Restoration Site KCl Associates of NC, PA
DMS Project # 95363 2017— MY04

1.0 EXECUTIVE SUMMARY / PROJECT ABSTRACT
The Twin Bays Wetland Restoration Site, (TBWRS) completed in March 2014, restored 10.6 acres of
non -riparian wetland along with 0.4 acre of upland preservation. The TBWRS is a non -riparian wetland
system in the Cape Fear Basin (03030007 8 -digit HUC) in southern Duplin County, North Carolina. The
project is located in the 14 -digit RUC 03030007090040 (Rock Fish Creek), which DMS has identified as
a Targeted Local Watershed (TLW) (NCDENR, EEP 2009).
The project site is protected by an 11.72 -acre permanent conservation easement held by the State of North
Carolina. TBWRS is located on a single parcel located off of Cornwallis Road approximately two miles
northwest of Wallace, North Carolina. The project site is bounded by Cornwallis Road to the west, a ditch
along the property line to the south, and agricultural land to the east and north. Prior to construction, the
site was actively used for row crop farming. The site had a long history of hydrologic modification in
order to allow for farming to take place on the property.
The Cape Fear River Basin Restoration Priorities state the goals for the TBWRS's 14 -digit RUC are to
expand restoration opportunities and repair riparian buffers (NCDENR EEP, 2009). The project goals for
TBWRS are in line with the basin priorities and include the following:
- Slow and treat the runoff of upslope agricultural drainage.
- Restore a Hardwood Flats Community.
- Develop valuable wetland habitat niches within a drained agricultural landscape.
The project goals will be addressed through the following objectives:
- Fill field ditches to restore surface flow retention and elevate local groundwater levels.
- Redevelop longer wetland flow patterns to increase surface flow retention time.
- Modify an existing pond to its natural seep condition to feed the downslope wetland.
- Restore a native forested hardwood wetland community using natives trees and seed mixes.
There are three non-credit generating areas on the site. There is 0.4 -acre of uplands located in the forested
northeastern corner of the project boundary. This area remained undisturbed and is included in the
TBWRS conservation easement. There is a 0.2 acre utility easement on the west side of the site along
Cornwallis Road that remained undisturbed. Additionally, the southernmost ditch, located adjacent to the
project easement, was left open and not filled. It is anticipated that leaving this ditch open will have
minimal impacts to the overall hydrologic performance of the site. The hydrologic influence of this ditch
was modeled using Lateral Effect, a software program that determines the lateral effect of a drainage
ditch or borrow pit on adjacent wetland hydrology (NCSU BAE, 2011). This analysis determined that the
potential horizontal drainage influence averages 76'. Due to the fact that the southern ditch cannot be
filled because of the potential for hydrologic trespass, the area immediately adjacent to the ditch will not
be a credit generating part of the site. It is assumed that with the onsite modifications, such as filling
ditches and surface roughening, the entire site will have more surface and groundwater, which may
decrease the effect of the ditch. For this reason, the non-credit generating portion of the site is assumed to
be half of the zone of influence for the ditch.
The TBWRS provided mitigation for wetland impacts within Hydrologic Unit 03030007 by restoring
10.6 acres of wetland and preserving 0.4 -acre of uplands, generating 10.6 riparian wetland mitigation
units (WMU's). The TBWRS will be monitored to determine if the project is on -track to meeting
jurisdictional wetland status. The wetland site will be deemed successful once hydrology is established
and vegetation success criteria are met. During the site's fourth growing season, sixteen of the nineteen
groundwater monitoring gauges met the success criteria, with only gauges 1, 3 (both non-credit bearing),
and 19 not achieving success. Vegetation monitoring was not performed during the fourth monitoring
year, in accordance with the mitigation plan.
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 1 2017— MY04

Summary information/data related to the occurrence of items such as beaver or encroachment and
statistics related to performance of various project and monitoring elements can be found in the tables and
figures in the report appendices. Narrative background and supporting information formerly found in
these reports can be found in the Baseline Monitoring Report and in the Mitigation Plan documents
available on the DMS website. All raw data supporting the tables and figures in the appendices are
available from DMS upon request.
2.0 MONITORING RESULTS
The TBWRS will be monitored to determine if the project is on -track to meeting jurisdictional wetland
status. The wetland restoration area will be deemed successful once hydrology is established and
vegetation success criteria are met. The site will be monitored for at least seven years or until the success
criteria are achieved.
2.1 VEGETATION MONITORING
The success criteria for the planted species in the mitigation area will be based on the vegetative density
estimated as woody stems/acre based on monitoring plot data. The site will demonstrate the re-
establishment of targeted vegetative communities through the survival and growth of planted species and
volunteer colonization, with an average stem density of 320 stems/acre after three years, 260 stems/acre
after five years, and 210 stems/acre after seven years to be considered successful. To determine the
success of the planted mitigation area, ten permanent vegetation monitoring plots (10 by 10 meters) have
been established in the wetland restoration area at a density that represents the total mitigation acreage.
The average density of these plots will determine whether the site meets the success criterion.
Vegetation monitoring was not performed during the fourth monitoring year, in accordance with the
mitigation plan. It will occur again during Monitoring Year 5.
2.2 HYDROLOGY MONITORING
Wetland hydrology will be monitored with a series of automatic gauges that record water table depth. The
site must present continuous saturated or inundated hydrologic conditions for at least 8% of the growing
season with a 50% probability of reoccurrence during normal weather conditions. A "normal" year is
based on NRCS climatological data for Duplin County using the 30th to 70th percentile thresholds as the
range of normal as documented in the USACE Technical Report "Accessing and Using Meteorological
Data to Evaluate Wetland Hydrology, April 2000." The soil survey for Duplin County does not contain
growing season data; therefore, due to its close proximity, the Sampson County soil survey was used. The
estimated growing season begins March 18 and ends November 11 (239 days). The water table of the
restored wetlands must be within 12" of the soils surface continuously for at least 8% (19 days) of the
239 -day growing season. Wetland hydrology will be monitored with nineteen automatic gauges that
record water table depth. Daily data will be collected from the automatic gauges over the 7 -year
monitoring period. Two new gauges were installed on the site on April 6, 2017, bringing the site total to
19 gauges.
To monitor the effect of the unfilled ditch described in Section 1.0, four sets of coupled gauges were
installed perpendicular to the unfilled ditch. Each set includes a gauge that is 40' from the open ditch and
another that is 75' from the ditch. An additional two gauges were installed between the coupled gauges to
monitor hydrology less than 40' from the open ditch in the non-credit bearing zone.
The daily rainfall data were obtained from the NC State Climate Office for a local weather station in
Jacksonville, NC. In 2017, the months of April and May experienced above average rainfall, while
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 2 2017— MY04

January, June, July, September, and October experienced average rainfall. The months of February,
March, August, and November recorded below average rainfall for the site. Overall, the area experienced
slightly below average rainfall during the 2017 growing season.
During the site's fourth growing season, all but 2 of the seventeen credit -bearing gauges met the
hydrologic success criteria. One of these gauges was right on the edge of the non-credit bearing area. The
other gauge that did not meet the criteria was newly installed this year and missed the first nineteen days
of the growing season. Additionally, one of the two non-credit bearing gauges achieved the success
criteria this year.
3.0 METHODOLOGY
The CVS-EEP protocol, Level 2(hqp:Hcvs.bio.unc.edu/methods.htm) was used to collect vegetation data
from the site in previous years. No vegetation data was collected during 2017.
4.0 REFERENCES
Lee, M.T., R.K. Peet, S.D. Roberts, and T.R. Wentworth. 2008. CVS-EEP Protocol for Recording
Vegetation, Version 4.2 (hqp://cvs.bio.unc.edu/methods.htm)
NCDENR, Ecosystem Enhancement Program. 2009. Lower Yadkin Pee -Dee River Basin
Priorities 2009. Raleigh, NC.
http://www.nceep.net/services/resiplans/Yadkin Pee_Dee _RBRP_2009_Final.pdf
NCSU BAE. North Carolina State University, Biological and Agricultural Engineering. 2011.
Method to Determine Lateral Effect of a Drainage Ditch on Adjacent Wetland
Hydrology. Last accessed 11/2012 at:
http://www.bae.ncsu.edu/soil_water/projects/lateral_effect.html
USACE. 2003. Stream Mitigation Guidelines. USACE, NCDENR-DWQ, USEPA, NCWRC.
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 3 2017— MY04

Appendix A
Project Vicinity Map and Background Tables
Twin Bays Wetland Restoration Site KCl Associates of NC, PA
DMS Project # 95363 4 2017— MY04

WAYNE
LENOIR JRd
ze9,s,e� -d
JONES
SAMPSON
DUPLIN VChadty
ONSLOWo
RmPENDER T
�a
Q° MURPHY
FARMS
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ah
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0-
0
J
C
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qua
a
e`5�a
'?o
HENDERSON
FIELD
Rd l
.qaR
r
R��er Rd
To reach the site from Raleigh: proceed east on 1-40 for
approximately 69 miles. Then travel on US -117 south toward
U
Wallace. Tum right onto NC -41 South/East Main Street. Travel for
two miles (East Main Street turns into West Main Street and then
Wallace Highway). Next, take a slight right onto Cornwallis
11
Road. The site will be approximately 0.5 mile ahead on the right.
^�
The subject project site is an environmental restoration site of the
ya
NCDENR Ecosystem Enhancement Program (EEP) and is
encompassed by a recorded conservation easement, but is
�0,r
ci
bordered by land under private ownership. Accessing the site may
Y
require traversing areas near or along the easement boundary and
therefore access by the general public is not permitted. Access by
authorized personnel of state and federal agencies or their
designees/contractors involved in the development, oversight and
Rd
stewardship of the restoration site is permitted within the terms and
Pelham
timeframes of their defined roles. Any intended site visitation or
loS Stell
activity by any person outside of these previously sanctioned roles
E a ement
and activities requires prior coordination with EEP.
PROGRAM
FIGURE 1. PROJECT SITE VICINITY MAP
N
1 0.5 0 1
TWIN BAYS WETLAND RESTORATION SITE
Miles
EEP PROJECT #95363, DUPLIN COUNTY, NC

Table 1. Project Components and Mitigation Credits
Twin Bays Wetland Restoration Site, DMS Project # 95363
Mitigation Credits
Riparian
Non -riparian
Nitrogen
Phosphorous
Stream
Nutrient
Nutrient
Wetland
WetlandBuffer
Offset
Offset
Type
R
RE R RE R RE
Acres
10.6
Credits
10.6
TOTAL
10.6
CREDITS
Project Components
Project
Existing
Restoration
Restoration
Component
Stationing/
Footage/
Approach
-or-
Footage
Mitigation
-or-
Location
Acreage
(PI PH etc.)
Restoration
or Acreage
Ratio
Reach ID
Equivalent
Central and
Wetland Area
Southern portion
10.6 acres
-
Restoration
10.6 acres
1:1
of project
easement
Component Summation
Restoration
Stream
Riparian Wetland
Non -riparian Wetland
Buffer
Level
(linear feet)
(acres)
(acres)
(square
Upland (acres)
feet)
feet)
Riverine
Non-
Restoration
10.6 acres
Enhancement
Enhancement I
Enhancement II
Creation
Preservation
0.4 acre
High Quality
Preservation
TOTAL
-
-
-
10.6 acres
-
0.4 acre
TOTAL
_
_
_
10.6
-
-
WMU
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 6 2017— MY04

Table 2. Project Activity & Reporting History
Twin Bays Wetland Restoration Site, DMS Project # 95363
Activity or Report
Data Collection
Com lete
Actual Completion or
Deliver
Mitigation Plan
Oct 2013
Final Design - Construction Plans
Dec 2013
Construction
Feb/March 2014
Planting
March 2014
Baseline Monitoring/Report
April 2014
May 2014
Vegetation Monitoring
April 10, 2014
Photo Points
Aril 10, 2015
Year 1 Monitoring
Nov 2014
Dec 2014
Vegetation Monitoring
Nov 3, 2014
Photo Points
Nov 3, 2014
Gauge Download
Nov 2017, 2014
Supplemental Planting
March 2015
Year 2 Monitoring
Nov 2015
Jan 2016
Vegetation Monitoring
July 30, 2015
Photo Points
July 30, 2015
Gauge Download
Nov 25, 2015
Year 3 Monitoring
Dec 2016
Dec 2016
Vegetation Monitoring
July 6, 2016
Photo Points
Aug23, 2016
Gauge Download
Dec 14, 2016
Year 4 Monitoring
Nov 2017
Dec 2017
Vegetation Monitoring
N/A
Photo Points
Nov 30, 2017
Gauge Download
Nov 30, 2017
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 7 2017— MY04

Table 3. Project Contacts
Twin Bays Wetland Restoration Site, DMS Project # 95363
Design Firm
KCI Associates of North Carolina, PA
4505 Falls of Neuse Rd.
Suite 400
Raleigh, NC 27609
Contact: Mr. Tim Morris
Phone: [phone]
Fax: [phone]
Construction Contractor
KCI Environmental Technologies and
Construction, Inc.
4505 Falls of Neuse Rd.
Suite 400
Raleigh, NC 27609
Contact: Mr. Tim Morris
Phone: [phone]
Fax: [phone]
Planting Contractor
Forestree Management Co.
1280 Maudis Road
Bailey, NC 27807
Contact: Mr. Tony Cortez
Phone: [phone]
Monitoring Performers
MY -00-04
KCI Associates of North Carolina, PA
4505 Falls of Neuse Rd.
Suite 400
Raleigh, NC 27609
Contact: Mr. Adam Spiller
Phone: [phone]
Fax: [phone]
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 8 2017— MY04

Table 4. Project Information
Twin Bays Wetland Restoration Site, DMS Project # 95363
Project Name
Twin Bays Wetland Restoration Site
County
Duplin County
Project Area (acres)
11.72 acres
Project Coordinates (lat. and
long.)
34.748418 N, -78.027129 W
Project Watershed Summary Information
Physiographic Province
Coastal Plain
River Basin
Cape Fear
USGS Hydrologic Unit 8 -digit
03030007
USGS Hydrologic Unit 14 -digit
03030007090040
DWQ Sub -basin
18-74-29b
Project Drainage Area (acres)
25.4 acres
Project Drainage Area
Percentage of Impervious Area
2%
CGIA Land Use Classification
93% Cultivated, 2% Mixed Shrubland, and 5% Low -Intensity Development
Wetland Summary Information (Post -Restoration)
Parameters
Wetland Area
Size of Wetland (acres)
10.6 acres
Wetland Type (non -riparian,
riparian riverine or riparian non-
riverine)
Non -riparian
Mapped Soil Series
Rains
(Torhunta, Murville/Leon and Udorthents by detailed soil investigation)
Drainage class
Poorly drained
Soil Hydric Status
Drained Hydric
Source of Hydrology
Hillside seepage / precipitation
Hydrologic Impairment
Ditching and Crops
Native vegetation community
Hardwood Flats Community
Percent composition of exotic
invasive vegetation
0%
Regulatory Considerations
Regulation
Applicable?
Resolved?
Supporting
Documentation
Waters of the United States —
Section 404
Yes
Yes, received 404
permit
N/A
Waters of the United States —
Section 401
Yes
Yes, received 401
permit
N/A
Endangered Species Act*
No
N/A
N/A
Historic Preservation Act*
No
N/A
N/A
Coastal Zone Management Act
(CZMA)/ Coastal Area
Management Act (CAMA)
No
N/A
N/A
FEMA Floodplain Compliance
No
N/A
FEMA Floodplain
Checklist
Essential Fisheries Habitat*
No
N/A
N/A
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 9 2017— MY04

Appendix B
Visual Assessment Data
Twin Bays Wetland Restoration Site KCl Associates of NC, PA
DMS Project # 95363 10 2017— MY04

LEGEND:
4 ; CONSERVATION EASEMENT
VEG PLOT ACHIEVING
El
DENSITY CRITERION
A,
VEG PLOT BELOW
1.174;! 1093DENSITY CRITERION o
VEG PLOT TOTAL / PLANTED STEM DENSITY • • • • 11371987 w
a• s
v e �
.�.:: .r� ,, , �• • .-_._ .. •_.-: - WETLAND GAUGE ACHIEVING ......................... �
HYDROLOGIC CRITERION
-.. WETLAND GAUGE BELOW
HYDROLOGIC CRITERION
.. • PHOTO POINT .................................................
/WA6,ESOURCE NC20190RThO/MAGERY W
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DEC 2017
t TE:. : GRAPHIC
CURRENT
CONDITION
I PLAN VIEW
SHEET 1 OF 1

Table 5. Vegetation Condition Assessment
Twin Bays Restoration Site, DMS Project #95363
PlantedAcrea a 10.6 Easement Acreage 11.7
CCPV
Number of
Combined
Ve etationCate o
Definitions
Mapping Threshold
Depiction
Polygons
Acreage
%of Planted Acreage
Very limited cover of both woody
Pattern and
1. Bare Areas
0. I acre
0
0.00
°
0.0%
and herbaceous material.
Color
Woody stem densities clearly below
2. Low Stem Density
Pattern and
target levels based on MY3, 4, or 5
0.1 acre
0
0.00
0.0%
Areas
Color
stem count criteria.
Total
0
0.00
0.0%
Areas with woody stems of a size
3. Areas of Poor
Pattern and
that are obviously small given
0.25 acre
0
0.00
0.0%
Growth Rates or Vigorclass
Color
the monitoring year.
Cumulative Total
0
0.00
0.0%
4. Invasive Areas of
Areas or points (if too small to
Pattern and
1,000 SF
0
0.00
0.0%
Concern
render as of ns at ma scale).
Color
5. Easement
Areas or points (if too small to
Pattern and
Encroachment Areas
render as polygons at map scale).
none
I Color
0
0.00
0.0%
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 12 2017— MY04

Photo Reference Points
PP a MY -00 — 4/10/14 PPIa — MY04 — 11/30/17
PP 1 b— MY -00 — 4/10/14
PPIb — MY04 — 11/30/17
PP2a — MY -00 — 4/10/14
PP2a — MY04 — 11/30/17
Twin Bays Wetland Restoration Site KCl Associates of NC, PA
DMS Project # 95363 13 2017— MY04

M aI
.I
Ai No
PP2b MY -00 4/10/14
PP2b — MY04 — 11/30/17
PP3 — MY -00 — 4/10/14
PP4a — MY -00 — 4/10/14
PP3 — MY04 —11/30/17
PP4a — MY04 — 11/30/17
Twin Bays Wetland Restoration Site KCl Associates of NC, PA
DMS Project # 95363 14 2017— MY04

PP4b — MY -00 — 4/10/14
PP4b — MY04 — 11/30/17
Ma — MY -00 — 4/10/14
Ma — MY04 — 11/30/17
PP5b — MY -00 — 4/10/14
PP5b — MY04 — 11/30/17
Twin Bays Wetland Restoration Site KCl Associates of NC, PA
DMS Project # 95363 15 2017— MY04

PP6a — MY -00 — 4/10/14
PP6a — MY04 — 11/30/17
PP6b— MY -00 — 4/10/14
Twin Bays Wetland Restoration Site
DMS Project # 95363 16
PP6b — MY04 — 11/30/17
KCI Associates of NC, PA
2017— MY04

Appendix C
Hydrologic Data
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 17 2017— MY04

8.0
7.0
6.0
5.0
C
w 4.0
C
a
3.0
2.0
1.0
0.0
Twin Bays Wetland Restoration Site
30-70 Percentile Graph
WETS Station Name: KOAJ - Albert Ellis Airport
O
Date d z
� 2017 Rainfall f 30% Less Than f 30% Greater Than

502 ,
501 -
500
W 499
3
b
498
497 �
Ground rface
In
.
N � N OA � N N N � N
A W O �p 00 - A A W O � Do
�
1-J,
12" Bel
-AJ�W
Surface
^ ILI
EL as
°o0ozzzddd
Sensor E
Begin Growing Season
March 18
9 Days
Twin Bays Restoration Site
Hydrograph
Wetland Gauge I
4.5
4.0
3.5
3.0
2.5
2.0 5'
1.5
1.0
0.5
n -q n 410
q. .1p ILI L
■ 1 W 0.0
N � N OA � N N N � N
A W O �p 00 - A A W O � Do
V N W
T Ln N
N W �O .-� N Ln N .-� N
r-� O 00 J A W O 'O 00
J N W N W �O � N
01 Vi N O W J
dd IrCD
CDCDi
EL as
°o0ozzzddd
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth

502
501
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 2
4.5
4.0
3.5
3.0
2.5
A�
2.0
S*
497
496
N N Qv — N N N N.a N W N W �C — N � N .-� N J N W N W �C — N
A W O 1p 0O V, A A W O 'P 00 T V� N — O W J A W O 'O 'r 01 V, N — O 00 V
C7 C7 w w w Y a a `" o a s �' O O o Z Z Z d C7 C 1
(D (D ' n n C O O O (7 N (D
Date
Rainfall Sensor Depth Groundwater Depth - Ground Surface 12 Inches Below Ground Surface
0.5
0.0

502
501
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 3 - non-credit bearing
C7
498
497
496
N N C� N Vn N — N v N W N cn N N �1 N w N W "O N
? w O IF r cn A ? w O 'O r T cn N O r J ? w O IO r k N— O r J
d C7 p �o Y Y Y c c Y Y � 'n 'n O O o Z Z Z d C7 C 1
' '� n
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

Twin Bays Restoration Site
Hydrograph
Wetland Gauge 4
502
segm urowmg season
March 18
501
500
0 499
W
a�
498
0
7:
497
End Growing Seaso
November
, k, �,,. I N
4.5
4.0
3.5
3.0
2.5
a
sv
2.0
1.5
1.0
0.5
496 T " " fm -r -- M--f,m
' 1--M�-11
1� 1 41
■ 15i
14 ■
_
M _■
r. .,..
. - ..Fa.�
.... + - � "L - 4MT
' `
1 0.0
N
W ~ O 1p
N 01 N IA
-11
W -11
N~
W
N
O'P Oo
--1
N
w N w
1. N v,
Oo v
-F-
N—N --1
0
W O ' 0i
O
N
'e,0
00 �l
r b
Y, f-
T
s � °
T
0 o z z z
d d d
CD
< o 0 0
n n
r
< < <
t
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth

502
501
500
w
C
0
W 499
a�
498
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 5
N N 0� N c.n N N �1 N W N W "O N vi N N 1
w O 'O 'r c.n A A w O 'O O 'O oo C, c.n N O Oo J
C7 > Y v1 rn v1 O O o Z Z Z d C7 b
n n a? ac r-
t
t
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth
4.5
4.0
3.5
3.0
2.5
m
2.0
5'
1.5
1.0
0.5
0.0

502
501
500
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 6 - non-credit bearing
497
496
N N 01 N In N N -A N w N W �O
? w O �O r Y, A A w O 'O r T cn N—. — O r
coo Z Z Z d C7 d
m w a a a < m m tra b o C n n < o O o ? cv
Z + + + _ J r trq trq C C C n n
J J J v J J J J Jv J
01 01 J J J J J � J J J J J J J J J J J J J J J J J J J J J J
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth
4.5
4.0
3.5
3.0
2.5•
m
2.0
1.5
1.0
0.5
0.0

A
502
501
500
499
498
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 7
a, �- N cn N �- N J N w N w �p .-• N v� N .-. N J N w N
A W O 1O 0C %A A A W O 'O 00 Qv N N O W V A W O 'D 00 T V� N O W J
O O o Z Z Z d C7 C7
CCD A .� _ C 7 m w ? 'c3 T3 C w y tr0 G C c o 0 0 co co
J
Date
Rainfal I Groundwater Depth Ground Surface 12 Inches Below Ground Surface — Sensor Depth
4.5
4.0
3.5
3.0
2.5
m
2.0
1.5
1.0
0.5
0.0

502
501
500
w
G'
0
499
W
c 498
C7
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 8
ld C7 `" `" `" coo yi 'o Y Y Y w c c r r Y Y rn �n O O o Z Z Z d C7 C7
Date
Rainfal I Groundwater Depth Ground Surface 12 Inches Below Ground Surface — Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

502
501
Ground Surface
497
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 9
Begin Growing Season
March 18
24 Days
500
-! 1 ■ _
w
T��1T1-T -
I � N
C
0
O 1p 00 A
A
41 %A
.°'�.
499
W
12" Bel
w Surface
3
0
498
Sensor
epth
C7
�
497
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 9
Begin Growing Season
March 18
24 Days
End Growing Season
November 11
4.5
4.0
3.5
3.0
2.5
av
2.0 5'
1.5
1.0
0.5
496 T�L�
h k�I
ILII I
-! 1 ■ _
■ Y L� T}SLI' IY i�_Y �r J ■ l ■ ■ 1 l 1 1_a
T��1T1-T -
I � N
W
O 1p 00 A
End Growing Season
November 11
4.5
4.0
3.5
3.0
2.5
av
2.0 5'
1.5
1.0
0.5
496 T�L�
IN
-! 1 ■ _
■ Y L� T}SLI' IY i�_Y �r J ■ l ■ ■ 1 l 1 1_a
T��1T1-T -
T 0.0
W
O 1p 00 A
A
41 %A
as
°000 zzzddd
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth

502
501
500
w
C
0
W 499
a�
498
AN
497
Ground Surface
12" BeLw Surface
I Sensor I Depth
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 10
Begin Growing Season
March 18
26 Days
End Growing Season
November 11
C°Days
, ,
TITTr—I
496 u
u a ■ _ . ■
I TTS
�� _E 4-E
u _� u■ _
T�fITTr—I
_■
r u■.i v
u . ■ �.■�� ■u� r �u _ �■ ■ .0 r�T'r—I r
N
A W
N N
O 1P DO Vi A
N N—
A W
O 'P 00
Ln
N O
J N W N
N O 00 J
00 J A W O 'O 00 01 'i-
o
r- a a° 0 0 o z z z d d d
r-
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface — Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

502
501
Ground Surface
500
w
C
0
W
499
12" Be
w Surface
498
Sensor
Depth
C7
497
496 -11A
I
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 11
Begin Growing Season
March 18
End Growing Season
November 11
W�O .- N Vi
A W O 1P 0O Vi A A W O 'P00 QA Vi N O 00 J A W O 'O 00 01 to N O 00 J
d d w w w ID w a a w a s 0 a �' �' O O o Z Z Z d
'; a� m '? 'cs 'C 'C OC G G "� "� TJ � n n c o 0 o n co co
v
J !7jJ J J J J J J J J J J
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface — Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

A
502
501
500
499
498
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 12
a, �- N cn N �- N J N w N w �p .-• N v� N .-. N J N w N
A W O 1O 0C %A A A W O 'O 00 Qv N N O W V A W O 'D 00 T V� N O W J
O O o Z Z Z d C7 C7
CCD A .� _ C 7 m w ? 'c3 T3 C w y tr0 G C c o 0 0 co co
J
Date
Rainfal I Groundwater Depth Ground Surface 12 Inches Below Ground Surface — Sensor Depth
4.5
4.0
3.5
3.0
2.5
m
2.0
1.5
1.0
0.5
0.0

502
501
500
w
G'
0
499
W
c 498
C7
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 13
ld C7 `" `" `" coo yi 'o Y Y Y w c c r r Y Y rn �n O O o Z Z Z d C7 C7
Date
Rainfal I Groundwater Depth Ground Surface 12 Inches Below Ground Surface — Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

502
501
500
w
G'
0
W 499
0 498
C7
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 14
— N — N 0� — N c.n N — N J — N w N W I'D N vA N~ — N J N w N W �O — N
i -W O 'O oo cn A i -W O 'O r A 01 cn N r-. O 00 J w O 'O o0 01 7- � N — O 6 r v
O o Z Z Z d C7 C7
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface — Sensor Depth
4.5
4.0
3.5
3.0
2.5
>v
2.0
1.5
1.0
0.5
0.0

AN
502
501
500
Ground Surface
499
12" Be w Surface
Sensor Depth
498
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 15
Begin Growing Season End Growing Season
March 18 M 1W November 11
KA
59
,. � I L -j U i i � ��-21Dfsi� i i i�o.,, YLJ
A W O 1P DO Vi A A W O 'P00 QA Vi N O 00 J A W O 'O 00 01 to N O 00 J
d d m w w- - w �> 'a -J aB? Ua �a z3 � o
0 c Zo Z0 Z0 d� dco cdo
v
J
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface — Sensor Depth
4.5
4.0
3.5
3.0
2.5
C
2.0
1.5
1.0
0.5
0.0

502
501
500
w
C
0
W 499
498
C7
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 16
�O � N Vi N �
A W O 1P W le, A A W O O 00 J A W O 'O O 00 J
C7 C7 r- a a O O o Z Z Z d C7 C7
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

502
501
500
w
C
0
W 499
498
C7
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 17
�O � N Vi N �
A W O 1P W le, A A W O O 00 J A W O 'O O 00 J
C7 C7 r- a a O O o Z Z Z d C7 C7
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

502
501
500
w
C
0
W 499
3
a
a
498
C7
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 18
N N 01 N In N N �7 N w N w \O N v, N N 1 N W
? W O 1p Ir Cn � f- W O 'D 0o T In N .- O Oo �l � W O 'O 00 TCD CD
Cn N O Oo J
C7 C7 a Y Y Y w c c c Y Y �n �n O O o Z Z Z d C7 C7
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

502
501
611I1,
C7
497
496
Twin Bays Restoration Site
Hydrograph
Wetland Gauge 19
Gauge installed
April 6, 2017
Begin Growing
March 18
Season End Growing Season
November 11
15 Days
Ground Surface
12" B,low Surface
h�
I
Sensor Depth
1-ull
E" Id.
1.
A W O 1O 0O Vi A A W O 1P 0C Q\ Vi N .-• O 00 J A W O 'O 00 T %. N OCD CD 00 J
IF ID C1 r- a a O O o Z Z Z d C7 C7
Date
Rainfall Groundwater Depth Ground Surface 12 Inches Below Ground Surface Sensor Depth
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0

Table 9. Wetland Hydrology Attainment Table
*
Twin Bays Restoration Site, DMS Project #95363
Greater than 8% Continuous Saturation/Max Consecutive Days
Du ing Growing Season (Percent a e)
Gauge #
MY -01
MY -02
MY -03
MY -04
MY -05
MY -06
MY -07
2014
2015
2016
2017
2018
2019
2020
Yes/25
Yes/105
No/2
No/9
Gauge 1
g
10.5%)
43.9%)
(0.8%)
(3.8%
No/16
Yes/75
Yes/36
Yes/30
Gauge 2
g
(6.5%)
(31.4%)
(14.9%)
(12.6%)
Gauge 3 *
13
18
10
14
(5.2%)
(7.3%)
(4.0%)
(5.9%
Yes/26
Yes/92
Yes/36
Yes/56
Gauge 4
g
(10.9%)
(38.5%)
(15.1%)
(23.4%)
Yes/27
Yes/98
Yes/53
Yes/53
Gauge 5
g
(11.1%)
(41.0%)
(22.2%)
(22.2%)
Gauge 6*
13
41
28
26
(5.4%)
(17.2%)
(11.5%)
(10.9%)
Yes/27
Yes/75
Yes/36
Yes/51
Gauge 7
g
(11.1%)
(31.4%)
(14.9%)
(21.3%)
Yes/24
Yes/75
Yes/89
Yes/37
Gauge 8
g
10.0%
31.4%)
37.0%)
15.5%)
No/17
Yes/92
Yes/27
Yes/24
Gauge 9
g
(6.9%)
(38.3%)
(11.1%)
(10.0%)
Yes/24
Yes/22
Yes/49
Yes/26
Gauge 10
g
(9.8%)
(9.2%)
(20.5%)
10.9%)
Yes/28
Yes/100
Yes/92
Yes/58
Gauge 11
g
(11.7%)
(41.8%)
(38.5%
(24.3%)
No/014
Yes/1003
No/018
Yes/026
Gauge 12
(5.9%)
(43.1%)
(7.3%)
(10.9%)
No/15
Yes/74
Yes/54
Yes/41
Gauge 13
g
(6.1%)
(30.8%)
(22.6%)
(17.2%)
Yes/22
Yes/19
No/13
Yes/24
Gauge 14
g
(9.0%)
(8.0%)
(5.2%)
(10.0%)
Yes/27
Yes/76
Yes/95
Yes/60
Gauge 15
g
(11.1%)
31.8%)
(39.7%
25.1%)
Yes/49
Yes/76
Yes/59
Yes/58
Gauge 16
g
20.3%
(31.8%)
(24.5%)
(24.3%)
Gauge 17**
g
-
Yes/104
Yes/103
Yes/73
43.5%)
42.9%)
30.5%)
Yes/58
Gauge 18$
-
_
_
(24.3%)
No/15
Gauge 19$
-
_
_
(6.3%
=Gauge in the non-credit bearing zone t=Gauge installed 4/6/2017
** = Gauge installed 3/8/2015
Twin Bays Wetland Restoration Site KCIAssociates of NC, PA
DMS Project # 95363 38 2017- MY04