HomeMy WebLinkAbout20031064 Ver 1_Mitigation Report_20110610Monitoring Firm:
Ie- UuarufK /`�tf,S /fAal
0 SEPI
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1025 Wade Avenue
Raleigh, NC 27605
Phone (919) 789 -9977
Project Manager:
Phillip Todd
ptodd @sepiengineering.com
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TABLE OF CONTENTS
MONITORING SUMMARY ........................................................................................ ............................... 1
METHODOLOGY........................................................................................................ ............................... 3
VegetationMethodology ............................................................................................ ..............................3
StreamMethodology ................................................................................................... ..............................3
Longitudinal Profile and Plan View ...................................................................... ............................... 3
PermanentCross Sections ..................................................................................... ............................... 3
PebbleCounts ........................................................................................................ ............................... 3
PhotoDocumentation .................................................................................................. ..............................3
REFERENCES............................................................................................................... ..............................5
APPENDICIES
Appendix A: Project Vicinity Map and Background Tables
Figure 1 — Project Location Map
Table 1. Project Restoration Components
Table 2. Project Activity and Reporting History
Table 3. Project Contact Table
Table 4. Project Attribute Table
Appendix B: Visual Assessment Data
Figure 2a -c: Current Condition Plan View (CCPV)
Table 5. Visual Stream Morphology Stability Assessment Table
Table 6. Vegetation Condition Assessment Table
Photos: Stream Stations
Photos: Vegetation Plots
Appendix C. Vegetation Plot Data
Table 7: Vegetation Plot Mitigation Success Summary Table
Appendix D: Stream Assessment Data
Figure: Cross - sections with annual overlays
Figure: Longitudinal profiles with annual overlays
Figure: Pebble count plots with annual overlays
Table 8: Baseline Stream Data Summary Table
Table 9: Monitoring — Cross - Section and Reach Morphology Data Table
Appendix E: Hydrologic Data
Table 10: Verification of Bankfull Events
UT to Tar River
EEP Project #234
April 2011
SEPI Engineering & Construction
Final Monitoring Report
Monitoring Year 5 of 5
MONITORING SUMMARY
The Unnamed Tributary to Tar River Restoration Site is located within the town of Louisburg, Franklin
County, North Carolina. The site was constructed between January 2005 and June 2005. The Priority II
restoration involved the conversion of 1,792 linear feet of impaired channel into 1,937 linear feet with
improved pattern, dimension, and profile. Rock grade control vanes and root wads were incorporated for
aquatic habitat enhancement and bed and bank stability. A variable width riparian buffer was planted on
either side of the stream with native vegetation in December 2005. This project has the following goals
and objectives:
• Provide a stable stream channel that neither aggrades nor degrades while maintaining its dimension,
pattern, and profile with the capacity to transport its watershed's water and sediment load.
• Improve water quality and reduce further property loss by stabilizing eroding stream banks.
• Reconnect the stream to its floodplain and /or establish a new floodplain at a lower elevation.
• Improve aquatic habitat with the use of natural material stabilization structures such as root wads,
cross - vanes, woody debris, and a riparian buffer.
• Provide aesthetic value, wildlife habitat, and bank stability through the creation of a riparian zone.
• Stabilize and enhance the tributary and small drainage that enters the site.
During 2009, two areas of bare /eroding terrace were observed along the right side (facing downstream) of
the project. The first area (Station 14 +45) has fully healed. The second area (Station 16 +40) continues to
remain bare and does not appear to be stabilizing. Dense loblolly pine (Pinus taeda) thickets that are
growing in the project corridor are a concern because they are suppressing the growth of more ideal late
successional species along the middle sections of the project (see Appendix B Vegetation Problem Area
Plan Views). The planted stem densities for all the Vegetation Plots (VP), except VP 1, 2 and 6, were
below the Monitoring Year 5 goal of 260 stems /acre. Planted stem density across all vegetation plots in
Monitoring Year 5 was 147 stems per acre. It should be noted that there were several species for which
`volunteer' individuals were noted in all vegetation plots. With the inclusion of these `volunteers,' all of
the vegetation plots exceed the Monitoring Year 5 stem density goal. Noted volunteer species include:
Alnus serrulata (VP 6), Baccharis halimifolia (VP 1 -9), Betula nigra (VP 2, 7), Cephalanthus
occidentalis (VP 6), Fraxinus pennsylvanica (VP 4 -9), Liquidambar styraciflua (VP 1,2, 6 -9),
Liriodendron tulipifera (VP 6), Myrica cerifera (VP 9), Platanus occidentalis (VP 7,8), Pinus taeda (VP
1 -8), Quercus phellos (VP 6), Quercus pagoda (VP 3,5), Quercus spp. (VP 1 -3), Prunus caroliniana (VP
1, 2, 6), Prunus serotina (VP 1,2, 4), and Ulmus rubra (VP 1).
The site is scheduled for supplemental planting in 2011.
Most of the UT to Tar River project reach appears to have remained stable through Monitoring Year 5.
Overall, only I% of the total bank length exhibited bank instability in the form of mass wasting in 2010.
However, two previously mentioned sections of bank instability remain as a concern. At the top of the
reach, upslope of the left bank, the terrace has experienced mass wasting just downstream of the culvert
outlet. This terrace erosion is encroaching on Burnette Road. Also there is a section of mass wasting on
the right bank just downstream of here (Station 10 +38). In addition, it was found that the culvert outlet
pool, that used to exist as the first channel unit along the profile below the culvert at the upstream end of
the reach, is completely filled in with sediment and now exists as riffle habitat. Also there is a section of
Ut Tar River SEPI Engineering & Construction
EEP Project #234 1 Final Monitoring Report
April 2011 Monitoring Year 5 of 5
mass wasting of the left bank that likely lends to excess sedimentation just downstream of the confluence
with the stormwater tributary (Station 24 +19) that drains the adjacent shopping center. This tributary
probably has very flashy flows during storm events due to the high percentage of impervious area within
its watershed, and is presumably the main agent contributing to the problems just downstream. The
sedimentation and bank instability areas have been noted as concerns since 2007. The sediment
contributing to these areas probably came from a combination of an upstream source and isolated sections
of bank instability along the project. it appears that the stream pattern remained consistent between the
monitoring years. The profile appears to have remained as stable as can be expected for a sand bed
stream, with the exception of some apparent deposition within the first 100 feet of channel and the
complete filling in of the culvert outlet pool at the head of the reach, turning it into a riffle (see
longitudinal profile overlay). A portion of this region of aggradation has scoured and formed a pool. The
overall dimension of the stream appears to have remained consistent with minor enlargement in cross
sections 4 and 5. The structures appear to be in good physical condition.
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 mitigation and restoration plan docwnents available on EEPs website.
All raw data supporting the tables and figures in the appendices is available from EEP upon request.
Ut Tar River SEPI Engineering & Construction
EEP Project #234 2 Final Monitoring Report
April 2011 Monitoring Year 5 of 5
METHODOLOGY
Vegetation Methodology
The following methodology was used for the planted woody stem count. The configuration of the
vegetation plots was marked out with tape to measure 10 meters by 10 meters (or equivalent to 100 square
meters) depending on buffer width. The planted material in the plot was marked with flagging. The
targeted vegetation was then identified by species and a tally of each species was kept and recorded in a
field book.
Stream Methodology
The project monitoring for the stream channel included a longitudinal survey, cross - sectional surveys,
problem area identification, and photo documentation. The specific methodology for each portion of the
stream monitoring is described in detail below.
Longitudinal Profile and Plan View
A longitudinal profile was surveyed with a Nikon DTM -520 Total Station, prism, and a TDS Recon
Pocket PC. The heads of features (i.e. riffles, runs, pools, and glides) were surveyed, as well as the point
of maximum depth of each pool, boundaries of problem areas, and any other significant slope- breaks or
points of interest. At the head of each feature and at the maximum pool depth, thalweg, water surface,
edge of water, left and right bankfull, and left and right top of bank (if different than bankfull) were
surveyed. All profile measurements were extracted from this survey, including channel and valley length
and length of each feature, water surface slope for each reach and feature, bankfull slope for the reach,
and pool spacing. This survey also was used to draw plan view figures with Microstation v8 (Bentley
Systems, Inc., Exton, PA). Stationing was calculated along the thalweg. All pattern measurements (i.e.,
meander length, radius of curvature, belt width, meander width ratio, and sinuosity) were extracted from
,J
the plan view.
Permanent Cross Sections
Five permanent cross sections (three riffles, one pool, and one run) were surveyed. The beginning and
end of each permanent cross section were originally marked with a wooden stake and conduit. Cross
sections were installed perpendicular to the stream flow. Each cross section survey noted all changes in
slopes, tops of both banks (if different from bankfull), left and right bankfull, edges of water, thalweg and
water surface. The cross sections were then plotted and Monitoring Year 5 monitoring data was overlain
on data from all previous monitoring years. All dimension measurements (i.e., bankfull width,
floodprone width, bankfull mean depth, cross sectional area, width -to -depth ratio, entrenchment ratio,
bank height ratio, wetted perimeter, and hydraulic radius) were extracted from these plots and compared
to all previous monitoring data.
Pebble Counts
Based on the fact that UT Tar River is a sand bed stream, it was determined that pebble counts were
unnecessary as they would fail to detect changes in the amounts of fine sediments in the bed load.
Therefore, pebble counts were not performed for Monitoring Year 5.
Photo Documentation
Permanent photo points were established during Monitoring Year 1. Two photographs (facing upstream
and facing downstream) were taken at each photo point with a digital camera. A set of three photographs
were taken at each cross - section (facing upstream, facing downstream, and facing the channel). A
representative photograph of each vegetation plot was taken at the designated corner of the vegetation
Ut Tar River SEPI Engineering & Construction
EEP Project #234 3 Final Monitoring Report
April 2011 Monitoring Year 5 of 5
plot and in the same direction as the Monitoring Year 1 photograph. Photos were also taken of all
significant stream and vegetation problem areas.
Ut Tar River SEPI Engineering & Construction
EEP Project #234 4 Final Monitoring Report
April 2011 Monitoring Year 5 of 5
REFERENCES
Earth Tech. January 2007. Unnamed Tributary to Tar River Stream Restoration Louisburg, Franklin
County, North Carolina Year 1 Monitoring Report.
DeLorme. 1997. The North Carolina Atlas and Gazateer.
Harman, W.H., et al. 1999. Bankfull Hydraulic Geometry Relationships for North Carolina Streams.
AWRA Wildland Hydrology Symposium Proceedings. Edited by D.S. Olson and J.P. Potyondy.
AWRA Summer Synposium. Bozeman, MT.
North Carolina Ecosystem Enhancement Program. September 2005. Content, Format and Data
Requirements for EEP Monitoring Reports.
Rosgen, D.L. 1994. A Classification of Natural River. Catena, Volume 22: 166 -169, Elsevier Science,
B.V. Amsterdam.
SEPI Engineering Group. 2007. UT to Tar River Final Monitoring Report, Year 2 of 5.
SEPI Engineering Group. 2008. UT to Tar River Final Monitoring Report, Year 3 of 5.
SEPI Engineering Group. 2009. UT to Tar River Final Monitoring Report, Year 4 of 5.
U.S. Department of Army, Corps of Engineers. 2003. Stream Mitigation Guidelines.
http: / /www.saw.usace.army.miI /wetlands / Mitigation /stream_m itigation.htmI
Ut Tar River SEPI Engineering & Construction
EEP Project 4234 5 Final Monitoring Report
April 2011 Monitoring Year 5 of 5
Appendix A
Project Vicinity Map and Background Files
Take US1 /401 north to the 11401 split
and continue on US 401 Pass through
R l esville and into Louisburg. Turn right
onto NC 39 south and an immediate left
onto Burnett Rd adjacent to project.
hNIZA
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2
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PROJECT LOCATION
van ceWvvp rrenHaIifa
Granvill Va
2,000 1,000 0 2,000 4,000 D u r h a ash
Feet Wake ilso
Pro'ect Ut Tar River (EEP #234) Year 5 (2010) Monitoring, Franklin County, North Carolina
April 2011
CC ' 'S E h I � t Figure 1. Project Location Ma
I u cu�1n�111 b J P
Table 1. Project Restoration Components
UT Tar River Stream Mitigation Site /Project No. 234
L
�
Data
Collection
Complete
Actual Completion
Date
Restoration Plan
NA
NA
June 2003
Final Design - 90%
NA
NA
Unknown
Construction
NA
NA
7/26/2005
Temporary S &E and Permanent seed mix applied
NA
NA
Throughout
Construction
Containerized, B &B, livestake planting
NA
NA
12/22/2005
9L
a
Aril 2006
Aril 2006
May 2006
Year 1 Monitoring
Fall 2006
January 2007
2007
Year 2 Monitoring
9
--January
September 2007
December 2007
Year 3 Monitoring
Fall 2008
October 2008
November 15, 2008
UT to Tar
1,792
1
Restoration
P11
1,937.13
10+00—
10+00—
November 20, 2010
River
29 +37.13
29 +90.65
Table 2. Project Activity and Reporting History
UT to Tar River /EEP Project No. 234
Activity or Report
Scheduled
Completion
Data
Collection
Complete
Actual Completion
Date
Restoration Plan
NA
NA
June 2003
Final Design - 90%
NA
NA
Unknown
Construction
NA
NA
7/26/2005
Temporary S &E and Permanent seed mix applied
NA
NA
Throughout
Construction
Containerized, B &B, livestake planting
NA
NA
12/22/2005
Mitigation Plan / As -built (Year 0 Monitoring -
baseline )
Aril 2006
Aril 2006
May 2006
Year 1 Monitoring
Fall 2006
January 2007
2007
Year 2 Monitoring
Fall 2007
--January
September 2007
December 2007
Year 3 Monitoring
Fall 2008
October 2008
November 15, 2008
Year 4 Monitoring
Fall 2009
October 2009
November 15, 2009
Year 5 Monitoring
Fall 2010
October 2010
November 20, 2010
Table 3. Project Contact Table
UT to Tar River/EEP Project No. 234
Designer
Earth Tech
701 Corporate Center Drive
Suite 475
Raleigh, NC 27607
Construction Contractor
McQueen Construction
619 Patrick Road
Bahama, NC 27503
Carolina Environmental Contracting, Inc.
Planting Contractor
P.O. Box 1905
Mount Airy, NC 27030
Erosion Control Solutions
Seeding Contractor
5508 Peakton Dr.
Raleigh, NC 27614
2006 Monitoring Performers
Earth Tech
701 Corporation Center Drive, Suite 475
Raleigh, NC 27607
SEPI Engineering Group
2007 -2010 Monitoring
1025 Wade Avenue
Performer
Raleigh, NC 27605
Phillip Todd (919 ) 789 -9977
Stream Monitoring POC
Andy Kiley 919) 573 -9914
Vegetation Monitoring POC
Phil Beach (919) 573 -9936
Wetland Monitoring POC
N/A
Table 4. Project Background Table
UT to Tar River /EEP Project No. 234
Project County
Franklin County, NC
Drainage Area
0.61 square miles
Drainage impervious cover estimate ( %)
>30%
Stream Order
l st order
Physiographic Region
Piedmont
Ecoregion
Northern Outer Piedmont
Rosgen Classification of As -Built
C
Cowardin Classification
NA
Dominant Soil Types
Chewacla and Wehadkee loam;
Wedowee- Urbanland_Udorthents complex
C5 UT Lake Lynn (Wake), C4 UT Hare Snipe Creek
( Wake)
Reference site ID
USGS HUC for Project
03020101
USGS HUC for References
03020201
NCDWQ Sub -basin for Project
03 -03 -01
NCDWQ Sub -basin for References
03 -04 -02
NCDWQ Classification for Project
Not Assigned
NCDWQ Classification for Reference
UT Lake Lynn: B -NSW; UT Hare Snipe Creek: C -NSW
Any portion of any project segment 303D listed?
No
Any portion of any project segment upstream of
a 303D listed segment?
No
Reasons for 303D listing or stressor
N/A
% of project easement fenced
<5
% of project easement demarcated with bollards
if fencing absent
0
Appendix B
Visual Assessment Data
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