20060684 Ver 1_Year 5 Monitoring Report_20160420

NC Department of
Environmental Quality
Received
City of Greensbor APR 2 2 2016
6q'w__j North Carolina Winston -Salem Eiigia. ring & Inspections
Regional Office
a�G,� OCA 4G3GQl�uGQf�
TO: U.S. ARMY CORPS OF ENGINEERS DATE: APRIL 20, 2016
RALEIGH REGULATORY FIELD OFFICE PROJECT: SAW -2007-03980
3331 HERITAGE TRADE DRIVE, SUITE 105 RE: NEW GARDEN ROAD
WAKE FOREST, NC 27587 STREAM RESTORATION
ATTENTION: MR. THOMAS BROWN MONITORING RECORD
MR. ANDREW WILLIAMS
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4/20/2016
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LEVEL I STREAM RESTORATION MONITORING
FIFTH YEAR MONITORING REPORT,
CHANNEL STABILITY
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PO Box 31.36 (Treensbo.ro, NC 27402-31.36 www.greensboro-nc.go�� = ;336 -:373 -CITY (2,189) = TTY # 333-6930

CITY OF GREENSBORO
ENGINEERING DIVISION
N C Department of
Environmental Quality
jived ;
APR 2 2 2016
Winstun-Salem
Regional Office ;
NEW GARDEN ROAD WIDENING, PHASE II
PROJECT # P-3741
CULVERT REPLACEMENT AND
STREAM RELOCATION/RESTORATION
HORSEPEN CREEK MAIN TRIBUTARY #2 AND TRIBUTARY A
LEVEL 1 STREAM RESTORATION MONITORING
FIFTH YEAR MONITORING REPORT
CHANNEL STABILITY
APRIL 20, 2016
Prepared By:
UZ4
Infrastructure of Carolina, Inc.
125 South Elm Street, Suite 402
Greensboro, North Carolina 27401
N.C. License #C-1950
I;Lc=ws
1
Carolina Wetland Services, Inc.
550 East Westinghouse Blvd.
Charlotte, NC 28273

Level I Stream Restoration Monitoring
Horsepen Creek Main Tributary #2 and Tributary AC department of
Environmental Quality
Received
i-' APR 2 2 2016
Winston-Salem
i
Regional Office
FIFTH YEAR MONITORING REPORT
Channel Stability
New Garden Road Widening Phase II
City of Greensboro, North Carolina Engineering Division
Project No. P-3741
April 20, 2016
Prepared by:
US Infrastructure of Carolina, Inc.
125 South Elm Street, Suite 402
Greensboro, North Carolina 27401
N.C. License #C-1950
0
//- a C, -��
Carolina Wetland Services, Inc.
550 East Westinghouse Blvd.
Charlotte, NC 28273
11
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Table of Contents
Page
Introduction......................................................................................................................................
1
Methods.............................................................................................................................................1
PhotoReference Sites.....................................................................................................................
l
ChannelStability............................................................................................................................
3
Results................................................................................................................................................
3
PhotoReference Sites.....................................................................................................................3
ChannelStability............................................................................................................................
4
MainTributary #2.......................................................................................................................4
TributaryA.................................................................................................................................
7
Summary...........................................................................................................................................
8
Comments....................................................................................................................................... 8
Figures
Figure1: Site Location Map...............................................................................................................2
Figure 2: As -Built Cross Sections and Photo Location Map.............................................................
5
AppendixA......................................................................................................................................9
Photopage 1 — Fifth Year Monitoring Photographs
AppendixB.................................................................................................................................... 27
Main Tributary #2 Cross Sections
Main Tributary #2 Longitudinal Profile
Main Tributary #2 Pebble Count
Main Tributary #2 Raw Data
AppendixC.................................................................................................................................... 43
Tributary A Cross Sections
Tributary A Longitudinal Profile
Tributary A Pebble Count
Tributary A Raw Data

Fifth Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P-3741
Introduction
The New Garden Road Widening Phase II Project is located in Greensboro, North Carolina as
shown on the Site Location Map (Figure 1) on the next page. Construction of this project
necessitated the relocation of portions of two tributaries to Horsepen Creek, Main Tributary #2
(South) and Tributary A (North). The relocation of these stream reaches was completed in
March 2011. The stream relocations were permitted through the U.S. Army Corps of Engineers
(Action I.D. SAW 2007-03980) and the North Carolina Department of Environment and Natural
Resources (DWQ Project #06-0684) and required a Level 1 Stream Restoration Mitigation and
Monitoring Plan for this project. This level of monitoring includes the establishment of photo
reference sites, plant survival monitoring, and channel stability monitoring.
The relocated stream reaches were assessed using Rosgen Level II Classification methods. The
following end of fifth year survey was conducted to evaluate and document the conditions of the
relocated stream channels following five years after the completion of construction. This data
will be compared to the as -built survey which provided a baseline for these future monitoring
events as well as the first, second, third, and fourth year surveys.
Methods
Photo Reference Sites
Photographs were taken during:
1) Fifth Year Survey for Channel Stability on March 23, 2016
In stream structures including rock vanes, root wads, and grade control sills were photographed
facing upstream and downstream. Stream bed and banks were photographed for visual
comparison of stability.
1

Fifth Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P-3741
Channel Stability
A geomorphic survey was performed by engineers from USI with the assistance of a scientist
from CWS on March 24, 2016 following five years after the construction of the new stream
channels. The survey included a longitudinal profile, a cross sectional survey, substrate sampling
(Wolman reach -wide pebble count), and photo documentation of each of the stream reaches.
This data was used to classify each reach using the Rosgen Level Il system. Bank pins were also
checked on both reaches to monitor bank stability.
Surveying methods (using a rod, level, and tape) followed the guidelines given in Stream
Channel Reference Sites: An Illustrated Guide to Field Technique, General Technical Report
RM -245, United States Department of Agriculture, Forest Service. A relative benchmark for the
Fifth Year survey was established on the top of an existing sanitary sewer manhole immediately
adjacent to New Garden Road. The surveys of both streams were tied together to the top of the
sanitary sewer manhole with a given elevation of 100.00. The actual elevation of the existing
sanitary sewer manhole as a permanent benchmark is 775.70. This is shown in the Raw Data
portions of the Appendices. The Raw Data also shows the correction of the elevations taken
during the survey to actual elevations.
Results
Photo Reference Sites
As part of the Fifth Year survey for the project, all areas of the project were photo documented.
In stream structures including rock vanes, root wads, and grade control sills were photographed
facing upstream and downstream. Stream bed and banks were photographed for visual
comparison of stability. Representative photographs are included in Photopage 1 (Appendix A).
The locations and directions of each of these photographs are shown in Figure 2 (Page 5). As an
aside, the same locations and directions were used for these photographs as those taken during
the As -Built, First Year, Second Year, Third Year, and Fourth Year surveys.
3

Fifth Year Monitoring Report: Channel Stability
New Garden Road Widening Phase I1 Project No. P-3741
Channel Stability
Main Tributary #2
Main Tributary 42 flows north through the project area and through the new culvert installed
beneath the widened New Garden Road. The Fifth Year survey of Main Tributary #2 was
conducted on March 24, 2016 by representatives from USI and CWS. The relocated stream
channel exhibited substrate consisting of medium gravel (1350 = 11.3 mm). The channel slope is
0.009 ft/ft with a sinuosity of 1.18. The average bankfull width and depth for this reach are 27
feet and 2.06 feet, respectively. The average bankfull cross sectional area for riffle portions of
the stream is 50.98 ft2. The average flood -prone area width for Main Tributary #2 is
approximately 60.80 feet. The new stream channel has a Rosgen Level II classification of C5.
Permanent cross sections were established during the As -Built survey and marked with rebar to
allow future monitoring of the same locations. Figure 2 on page 5 shows the locations of these
permanent cross sections. The As -Built, First Year, Second Year, Third Year, Fourth Year, and
Fifth Year conditions of Main Tributary 42 (Cross Sections A and B) are summarized below in
the following tables. Channel cross sections, the longitudinal profile, and pebble count data for
Main Tributary #2 are included in Appendix B.
Provide the following data for each cross-section: Cross Section A
Date Measured:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Cross-section being measured:
A
A
A
A
A
A
Cross-sectional area: as-built/present
60.01 sf
52.43 sf
50.09 sf
43.25 sf
43.04 sf
50.98 sf
Bankfull width: as-built/present
27.00 ft
27.00 ft
27.00 ft
27.00 ft
27.00 ft
27.00 ft
Floodprone Width: as-built/present
60.00 ft
60.00 ft
60.00 ft
55.00 ft
58.10 ft
58.60 ft
Width/depth: as-bu i It/pre sent
12.15
13.90
14.55
16.86
16.94
14.30
Entrenchment ratio: as-built/present
2.22
2.22
2.22
2.04
2.15
2.17
Stream Type: as-built/present*
C5
C5
C5
C5
C5
C5
I only required for riffle cross-SectlonS
El

Fifth Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P-3741
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Fifth Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P-3741
Provide the following data for each cross-section: Cross Section B
Date Measured:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Cross-section being measured:
B
B
B
B
B
B
Cross-sectional area: as-built/present
73.91 sf
68.42 sf
64.21 sf
65.28 sf
62.10 sf
59.89 sf
Bankfull width: as-built/present
27.00 ft
27.00 ft
27.00 ft
27.00 ft
27.00 ft
27.00 ft
Floodprone Width: as-built/present
70.00 ft
70.00 ft
70.00 ft
70.00 ft
63.50 ft
63.00 ft
Width/depth: as-built/present
9.86
10.65
11.35
11.17
11.74
12.17
Entrenchment ratio: as-bui I t/pre sent
2.59
2.59
2.59
2.59
2.35
2.33
Stream Type: as-built/present*
C5
C5
C5
C5
C5
C5
* 0171)1 required for cross-sections
The As -Built, First Year, Second Year, Third Year, Fourth Year, and Fifth Year conditions of
Main Tributary #2 (Longitudinal Profile) are summarized below in the following table. The
longitudinal profile for Main Tributary #2 is included in Appendix B.
Date Measured:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Avg. slope riffles: as-built/present
0.005 ft/ft
0.023 ft/ft
0.020 ft/ft
0.015 ft/ft
0.015 ft/ft
0.013 ft/ft
Avg. slope pools: as-built/present
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
Number of riffles: as-built/present
1
1
1
1
1
1
Number of pools: as-built/present
4
4
4
3
4
4
The As -Built, First Year, Second Year, Third Year, Fourth Year, and Fifth Year conditions of
Main Tributary #2 (Pebble Counts) are summarized below in the following table. The pebble
count data for Main Tributary #2 is included in Appendix B.
Date Measured:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Cross-section being measured
A and B
A and B
A and B
A and B
A and B
A and B
D16: as-built/present
0.125
0.125
0.25
0.25
0.25
1.0
D50: as-built/present
0.5
8.0
5.7
8.0
11.3
11.3
D84: as-built/present
11.3
16.0
16.0
22.6
32.0
22.6
The As -Built, First Year, Second Year, Third Year, Fourth Year, and Fifth Year conditions of
Main Tributary #2 (Visual Inspection) are summarized below in the following table.
Date Inspected:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Structure Type
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Is water piping through or
around structure?
No
No
No
No
No
No
Head cut or down cut present?
No
No
No
No
No
No
Bank or scour erosion present?
No
No
No
No
No
No
Other problems noted?
No
No
No
No
No
No
Gel

Fifth Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P-3741
Tributary A
Tributary A is a minor tributary which flows west along the toe of the widened New Garden
Road embankment to its confluence with Main Tributary #2. The Fifth Year survey of Tributary
A was conducted on March 24, 2016 by representatives from USI and CWS. The relocated
stream channel exhibited substrate consisting of coarse gravel (D50 = 16.0 mm). The channel
slope is 0.021 ft/ft with a sinuosity of 1.37. The average bankfull width and depth for this reach
are 18.75 feet and 2.05 feet, respectively. The average bankfull cross sectional area for riffle
portions of the stream is 33.43 ftZ. The average flood -prone area width for Tributary A is
approximately 48 feet. The new stream channel has a Rosgen Level II classification of E4.
Permanent cross sections were established during the As -Built survey and marked with rebar to
allow future monitoring of the same locations. Figure 2 on page 5 shows the locations of these
permanent cross sections. The As -Built, First Year, Second Year, Third Year, Fourth Year, and
Fifth Year conditions of Tributary A (Cross Sections C and D) are summarized below in the
following tables. Channel cross sections, the longitudinal profile, and pebble count data for
Tributary A are included in Appendix C.
Provide the following data for each cross-section: Cross Section C
Date Measured:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Cross-section being measured:
C
C
C
C
C
C
Cross-sectional area: as-bui It/pre sent
32.45 sf
34.43 sf
26.85 sf
31.76 sf
33.65 sf
33.43 sf
Bankfull width: as-built/present
17.00 ft
17.00 ft
17.00 ft
17.00 ft
17.00 ft
18:50 ft
Floodprone Width: as-built/present
45.00 ft
45.00 ft
45.00 ft
45.00 ft
45.00 ft
45.00 ft
Width/depth: as-built/present
8.91
8.39
10.76
9.10
8.59
10.24
Entrenchment ratio: as-built/present
2.65
2.65
2.65
2.65
2.65
2.43
Stream Type: as-built/present*
E4
E4
E4
E4
E4
E4
only required for ri/fle cross-sections
Provide the following data for each cross-section: Cross Section D
Date Measured:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Cross-section being measured:
D
D
D
D
D
D
Cross-sectional area: as-buiIt/pre sent
39.59 sf
44.76 sf
22.68 sf
39.25 sf
40.71 sf
43.35 sf
Bankfull width: as-built/present
19.00 ft
20.50 ft
20.50 ft
19.00 ft
19.00 ft
19.00 ft
Floodprone Width: as-built/present
55.00 ft
55.00 ft
55.00 ft
55.00 ft
55.00 ft
51.00 ft
Width/depth: as-built/present
9.12
9.39
18.53
9.20
8.87
8.33
Entrenchment ratio: as-bu i It/pre sent
2.89
2.68
2.68
2.89
2.68
2.68
Stream Type: as-built/present*
E4
E4
E4
E4
E4
E4
only, required Jor riljle cross-sections
7

Fifth Year Monitoring Report: Channel Stability
New Garden Road Widening Phase II Project No. P-3741
The As -Built, First Year, Second Year, Third Year, Fourth Year, and Fifth Year conditions of
Tributary A (Longitudinal Profile) are summarized below in the following table. The
longitudinal profile for Tributary A is included in Appendix C.
Date Measured:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Avg. slope riffles: as-built/present
0.023 ft/ft
0.023 ft/ft
0.034 ft/ft
0.030 ft/ft
0.027 ft/ft
0.009 ft/ft
Avg. slope pools: as-built/present
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
Number of riffles: as-buiIt/pre sent
3
3
3
3
3
3
Number of pools: as-built/present
4
4
4
4
4
4
The As -Built, First Year, Second Year, Third Year, Fourth Year, and Fifth Year conditions of
Tributary A (Pebble Counts) are summarized below in the following table. The pebble count
data for Tributary A is included in Appendix C.
Date Measured:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Cross-section being measured
C and D
C and D
C and D
C and D
C and D
C and D
D16: as-built/present
0.125
<0.062
0.062
0.062
<0.062
<0.062
D50: as-built/present
8.0
5.7
11.3
11.3
11.3
16.0
D84: as-built/present
22.6
32.0
32.0
64.0
45.0
45.0
The As -Built, First Year, Second Year, Third Year, Fourth Year, and Fifth Year conditions of
Tributary A (Visual Inspection) are summarized below in the following table.
Date Inspected:
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
3/24/2016
Structure Type
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Is water piping through or
around structure?
No
No
No
No
No
No
Head cut or down cut present?
No
No
No
No
NO
NO
Bank or scour erosion present?
No
No
No
No
No
No
Other problems noted?
No
No
No
No
No
NO
Summary
Comments
The channels (Main Tributary #2 and Tributary A) relocated as part of the New Garden Road
Widening Phase II Project appear to be geomorphically and hydraulically stable with regard to
pattern, profile, and dimension. Other than ongoing monitoring and observation there are no
recommendations to perform any remediation at this time.
8

Fifth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P-3741
Appendix A
Photopage 1 — Fifth Year Monitoring Photographs

' f ,
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y , 11 r y
Photo 1: Tributary A — permanent cross section, left bank looking upstream
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Fifth Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase II Project No. P-3741
a
Photo 7: Tributary A — Root Wad Area A, centerline looking upstream
Photo 8: Tributary A — Root Wad Area B, left bank looking downstream
13

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Fifth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P-3741
1
Photo 11: Tributary A — Cross Vane B, left bank looking downstream
Photo 12: Tributary A — Root Wad Area B, left bank looking upstream
15
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Photo 11: Tributary A — Cross Vane B, left bank looking downstream
Photo 12: Tributary A — Root Wad Area B, left bank looking upstream
15

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Fifth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P-3741
Photo 17: Main Tributary #2 — Root Wad Area D, centerline looking downstream
Photo 18: Main Tributary 92 — permanent cross section, centerline looking upstream
18

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Fifth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P-3741
Photo 31: Main Tributary #2 — Root Wad D, left bank looking upstream showing
both permanent cross sections
d-
Photo 32: Main Tributary 42 — Root Wad D, left bank looking downstream
25

Fifth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P-3741
Appendix B
Main Tributary #2 Cross Sections
Fifth Year Monitoring
Comparison — As -Built, First Year, Second Year, Third Year, Fourth Year, and Fifth
Year
Main Tributary #2 Longitudinal Profile
Fifth Year Monitoring
Comparison — First Year, Second Year, Third Year, Fourth Year, and Fifth Year
Main Tributary #2 Pebble Count
Main Tributary #2 Raw Data
Fifth Year Monitoring
27

Fifth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P-3741
28
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Fifth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P-3741
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New Garden Road Widening Phase II Project No. P-3741
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New Garden Road Widening Phase II Project No. P-3741
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Fifth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P-3741
Main Tributary #2 - Pebble Count
34
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S
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1 100 1.0
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2 100 2.0
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4 100 4.0
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8 100 8.0
28.00
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9 100 9.0
37.00
11.3-16 Medium
26 100 26.0
63.00
16-22.6 Coarse
13 100 13.0
76.00
22.6-32 Coarse
10 100 10.0
86.00
32-45 Very Coarse
6 100 6.0
92.00
45-64 Very Coarse
3 100 3.0
95.00
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0 100 0.0
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Bedrock 113edrock
I1 100 1.0
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34

Fifth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P-3741
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New Garden Road Widening Phase II
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New Garden Road Widening Phase II Project No. P-3741
LONGITUDINAL PROFILE: Water Surface -Main Tributary #2
Project Name: New Garden Road Widening Phase 11
Project Location Greensboro, NC
Date: 3/24/2016
WS Slope (ft./ft.) 0.005
39
BM #1 (ft.)= 775.70
Height of
Height
Distance, Point
Back -Sight
Instrument Fore -Sight
Depth
STATION
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HZ
F.S.
Depth
Deviation Corrected Elevation COMMDVTS
B.M. 4 1
4.55
104.55
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7.0
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13.22
0.11
91.44
767.14
12.0
104.55
13.35
0.29
91.49
767.19
21.0
104.55
13.21
0.04
91.38
767.08
33.0
104.55
13.76
0.35
91.14
766.84
55.0
104.55
14.15
0.59
90.99
766.69
64.0
104.55
13.89
0.30
90.96
766.66
77.0
104.55
13.89
0.19
90.85
766.55
102.0
104.55
15.04
1.32
90.83
766.53
119.0
104.55
14.87
1.15
90.83
766.53
137.0
104.55
14.62
0.88
90:81
766.51
148.0
104.55
13.91
0.07
90.71
766.41
157.0
104.55
15.69
1.73
90.59
766.29
176.0
104.55
15.04
1.09
90.60
766.30
206.0
104.55
14.79
0.76
90.52
766.22
223.0
0.99
100.99
10.66
0.21
90.54
766.24
226.0
100.99
12.38
1.90
90.51
766.21
233.0
100.99
13.30
2.84
90.53
766.23
247.0
100.99
12.06
1.63
90.56
766.26
266.0
100.99
12.24
1.78
90.53
766.23
274.5
100.99
12.00
1.56
90.55
766.25
288.0
100.99
12.68
2.24
90.55
766.25
294.0
100.99
11.04
0.35
90.30
766.00
WS Slope (ft./ft.) 0.005
39

Fifth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P-3741
LONGITUDINAL PROFILE: Thalweg - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 3/24/2016
40
BM # 1 (ft.)-- 775.70
Height of
Height
Distance; Point
Back -Sight
Instrument
Fore -Sight
Depth
STATION
B.S.
ILL
F.S.
Elevation Corrected Elevation
COMMENTS
B.M. # 1
4.55
104.55
100.00
0.0
104.55
13.04
91.51
767.21
7.0
104.55
13.22
91.33
767.03
12.0
104.55
13.35
91.20
766.90
TOR
21.0
104.55
13.21
91.34
767.04
33.0
104.55
13.76
90.79
766.49
55.0
104.55
14.15
90.40
766.10
HOR
64.0
104.55
13.89
90.66
766.36
TOR
77.0
104.55
13.89
90.66
766.36
PMD
102.0
104.55
15.04
89.51
765.21
119.0
104.55
14.87
89.68
765.38
PMD
137.0
104.55
14.62
89.93
765.63
CV
148.0
104.55
13.91
90.64
766.34
PMD
157.0
104.55
15.69
88.86
764.56
176.0
104.55
15.04
89.51
765.21
206.0
104.55
14.79
89.76
765.46
CV
223.0
0.99
100.99
10.66
90.33
766.03
226.0
100.00
12.38
87.62
763.32
PMD
233.0
100.00
13.30
86.70
762.40
PMD
247.0
100.00
12.06
87.94
763.64
266.0
100.00
12.24
87.76
763.46
HOR
274.5
100.00
12.00
88.00
763.70
288.0
100.00
12.68
87.32
763.02
294.0
100.00
11.04
88.96
764.66
Thalweg Slope (ft./ft.)
0.009
Riffle Slope
0.013
40

Fifth Year Monitoring Report: Main Tributary 92
New Garden Road Widening Phase II Project No. P-3741
LONGITUDINAL PROFILE: Left Bankfull - Main Tributary 42
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 3/19/2013
41
BM #I (ft.)=
775.70
Height of
Height
Distance; Point
Back -Sight Instrument Fore -Sight
Depth
STATION
B.S. ILL
F.S.
Elevation
Corrected Elevation CONIMINTS
B.M. # 1
2.12 102.12
100.00
5.0
102.12
8.33
93.79
769.49
37.0
102.12
8.47
93.65
769.35
59.0
102.12
8.32
93.80
769.50
82.0
102.12
8.45
93.67
769.37
109.0
102.12
8.52
93.60
769.30
127.0
102.12
8.34
93.78
769.48
148.0
102.12
8.15
93.97
769.67
176.0
102.12
8.29
93.83
769.53
202.0
102.12
8.46
93.66
769.36
224.0
102.12
7.93
94.19
769.89
240.0
102.12
7.81
94.31
770.01
264.0
102.12
7.98
94.14
769.84
287.0
102.12
8.01
94.11
769.81
41

Fifth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P-3741
LONGITUDINAL PROFILE: Right Bankfull - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 3/19/2013
42
BM # 1 (ft.)=
775.70
Height of
Height
Distance; Point
Back -Sight Instrument Fore -Sight
Depth
STATION
B.S. ILL
F.S.
Elevation
Corrected Elevation COMMENTS
B.M. # 1
2.12 102.12
100.00
5.0
102.12
7.88
94.24
769.94
37.0
102.12
7.61
94.51
770.21
59.0
102.12
8.04
94.08
769.78
82.0
102.12
8.07
94.05
769.75
109.0
102.12
8.65
93.47
769.17
127.0
102.12
8.19
93.93
769.63
148.0
102.12
8.22
93.90
769.60
176.0
102.12
8.51
93.61
769.31
202.0
102.12
8.52
93.60
769.30
224.0
102.12
8.31
93.81
769.51
240.0
102.12
8.27
93.85
769.55
264.0
102.12
8.74
93.38
769.08
287.0
102.12
8.55
93.57
769.27
42

Fifth Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P-3741
Appendix C
Tributary A Cross Sections
Fifth Year Monitoring
Comparison — As -Built, First Year, Second Year, Third Year, Fourth Year, and Fifth
Year
Tributary A Longitudinal Profile
Fifth Year Monitoring
Comparison — First Year, Second Year, Third Year, Fourth Year, and Fifth Year
Tributary A Pebble Count
Tributary A Raw Data
Fifth Year Monitoring
43

Fifth Year Monitoring Report: Tributary A
New Garden Road Widening Phase II
Project No. P-3741
44
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Tributary A - Pebble Count
50
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Particle
S
A
N
D
Count
Tot #
% Tot
% Cum
<0.062 Silt/Clay
18 100 18.0
18.00
0.062 - 0.125 Very Fine Sand
10 100 10.0
28.00
0.125 - 0.250 Fine Sand
7 100 7.0
35.00
0.25-0.5 Med. Sand
3 100 3.0
1 38.00
0.5-1.0 Coarse Sand
1 100 1.0
39.00
1.0-2.0 Very Coarse Sand
4 100 4.0
43.00
2-4
Very Fine Gravel
G
R
A
V
E
L
0
100
0.0
43.00
4-5.7 Fine Gravel
0 100 0.0
43.00
5.7-8 Fine Gravel
0 100 0.0
43.00
8-11.3 Medium
0 100 0.0
43.00
11.3-16 Medium
2 100 2.0
45.00
16-22.6 Coarse
5 100 5.0
50.00
22.6-32 Coarse
15 100 15.0
65.00
32-45 Very Coarse
11 100 11.0
76.00
45-64 lVery Coarse
12 100 12.0
88.00
64-90
Small
C
O
n
i
e
7
100
7.0
95.00
90-128 Small
2 100 2.0
97.00
128-180 Large
1 100 1.0
98.00
180-256 Large
0 100 0.0
98.00
256-362
Small
B
0
1
a
e
0
100
0.0
98.00
362-512 Small
0 100 0.0
98.00
512-1024 Medium
0 100 0.0
98:00
11024-2048 Large - Very Large
0 100 0.0
98.00
Bedrock lBedrock
2 100 2.0
100.00
50

Fifth Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P-3741
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New Garden Road Widening Phase II Project No. P-3741
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Fifth Year Monitoring Report: Tributary A
New Garden Road Widening Phase II
Project No. P-3741
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New Garden Road Widening Phase II Project No. P-3741
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Fifth Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P-3741
LONGITUDINAL PROFILE: Water Surface - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location Greensboro, NC
Date: 3/24/2016
WS Slope (ft./ft.) 0.012
Riffle Slope 0.009
55
BM # I (manhole)- 775.70
BM42 (pipe)- 775.75
Height of
Height
Distance; Point
Back -Sight
Instrument Fore -Sight
Depth
STATION
B.S.
ELL
F. S.
Depth
De%afion Corrected Elevation
CONMINN
B.M. 91
2.45
102.50
100.05
0.0
102.50
9.80
0.18
92.88
768.53
HOR
10.0
102.50
10.19
0.59
92.90
768.55
TOR
12.8
102.50
9.74
0.12
92.88
768.53
sill
13.0
102.50
10.66
0.36
92.20
767.85
PMD
27.0
102.50
10.64
0.27
92.13
767.78
HOR
44.0
102.50
10.82
0.20
91.88
767.53
TOR
58.0
102.50
11.42
0.51
91.59
767.24
PMD
62.0
102.50
11.53
0.61
91.58
767.23
HOR
77.0
102.50
11.39
0.47
91.58
767.23
82.0
102.50
11.02
0.10
91.58
767.23
CV
83.0
102.50
12.41
0.85
90.94
766.59
PMD
93.0
102.50
12.78
1.23
90.95
766.60
PMD
106.0
102.50
12.89
1.36
90.97
766.62
PMD
116.0
102.50
1233
0.77
90.94
766.59
PMD
119.0
102.50
12.51
0.98
90.97
766.62
135.0
102.50
12.51
0.97
90.96
766.61
147.0
102.50
11.65
0.08
90.93
766.58
CV
148.0
102.50
13.75
1.80
90.55
766.20
PMD
154.0
102.50
13.39
1.41
90.52
766.17
PMD
170.0
102.50
12.36
0.38
90.52
766.17
HOR
185.0
102.50
13.71
1.78
90.57
766.22
TOR
WS Slope (ft./ft.) 0.012
Riffle Slope 0.009
55

Fifth Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P-3741
LONGITUDINAL PROFILE: Thalweg - Tributary A
Project Name: New Garden Road Widening Phase lI
Project Location: Greensboro, NC
Date: 3/24/2016
BM # I (manhole)-- 775.70
Thalweg Slope (ft./ft.) 0.021
56
BM#2 (pipe)-- 775.75
Height of
Height
Distance; Point
Back -Sight
Instrument
Fore -Sight
Depth
STATION
B.S.
ILL
F. S.
Elevation Corrected Flevation
COMMENTS
B.M. # 1
2.45
102.50
100.05
0.0
102.50
9.80
92.70
768.40
HOR
10.0
102.50
10.19
92.31
768.01
TOR
12.8
102.50
9.74
92.76
768.46
sill
13.0
102.50
10.66
91.84
767.54
PMD
27.0
102.50
10.64
91.86
767.56
HOR
44.0
102.50
10.82
91.68
767.38
TOR
58.0
102.50
11.42
91.08
766.78
PMD
62.0
102.50
11.53
90.97
766.67
HOR
77.0
102.50
11.39
91.11
766.81
82.0
102.50
11.02
91.48
767.18
CV
83.0
102.50
12.41
90.09
765.79
PMD
93.0
102.50
12.78
89.72
765.42
PMD
106.0
102.50
12.89
89.61
765.31
PMD
116.0
102.50
12.33
90.17
765.87
PMD
119.0
102.50
12.51
89.99
765.69
135.0
102.50
12.51
89.99
765.69
147.0
102.50
11.65
90.85
766.55
CV
148.0
102.50
13.75
88.75
764.45
PMD
154.0
102.50
13.39
89.11
764.81
PMD
170.0
102.50
12.36
90.14
765.84
HOR
185.0
102.50
13.71
88.79
764.49
TOR
Thalweg Slope (ft./ft.) 0.021
56

Fifth Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P-3741
LONGITUDINAL PROFILE: Left Bankfull - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 3/19/2013
BM # 1 (ft.)-- 775.70
Height of Height
Distance; Point Back -Sight Instrument Fore -Sight Depth
STATION B.S. ILL F.S. Devotion Corrected 17evation CONEMENTS
B.M. # 1
2.56 102.56
100.00
0.0
102.56
7.00
95.56
10.0
102.56
7.51
95.05
27.0
102.56
7.38
95.18
44.0
102.56
7.65
94.91
62.0
102.56
8.06
94.50
77.0
102.56
8.45
94.11
82.0
102.56
8.45
94.11
119.0
102.56
9.45
93.11
135.0.
102.56
8.82
93.74
147.0
102.56
8.75
93.81
170.0
102.56
8.86
93.70
771.26
770.75
770.88
770.61
770.20
769.81
769.81
768.81
769.44
769.51
769.40

Fifth Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P-3741
LONGITUDINAL PROFILE: Right Bankfull - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 3/19/2013
58
BM # 1 (ft.)- 775.70
Height of
Height
Distance; Point
Back -Sight
Instrument Fore -Sight Depth
STATION
B.S.
RL
F.S.
Elevation Corrected Elevation COMMENTS
B.M. #1
2.56
102.56
100.00
0.0
102.56
7.19
95.37
771.07
10.0
102.56
6.97
95.59
771.29
27.0
102.56
7.40
95.16
770.86
44.0
102.56
7.33
95.23
770.93
62.0
102.56
8.30
9426
769.96
77.0
102.56
8.07
94.49
770.19
82.0
102.56
8.14
94.42
770.12
119.0
102.56
8.84
93.72
769.42
135.0
102.56
8.93
93.63
769.33
147.0
102.56
8.66
93.90
769.60
170.0
102.56
9.08
93.48
769.18
58