20060684 Ver 1_Year 3 Monitoring Report_20140425

i City of Greensboro
� North Carolina
RE LJ lJLS Q (W �Q j u ti
TO: NCDENR, DIV. OF WATER RESOURCES DATE:
WINSTON -SALEM REGIONAL OFFICE PROJECT:
585 WAUGHTOWN STREET RE:
WINSTON - SALEM, NC 27107
ATTENTION: SUE HOMEWOOD
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N C. Dept of ENR
APR 2 5 2014
WINSTON -SALEM
Engin sr1w%0Nb'gdt 0baE
APRIL 22, 2014
DWQ #06 -0684
NEW GARDEN ROAD
STREAM RESTORATION
MONITORING RECORD
❑ PRINTS ❑ SPECIFICATIONS ❑ PLANS
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DATE
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1
04/22/2014
FOR YOUR USE
LEVEL 1 STREAM RESTORATION MONITORING
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THIRD YEAR MONITORING REPORT,
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CHANNEL STABILITY
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PO Box 3136 Greensboro, NC 27402 -3136 - wwN-. greensboro -nc gov 336 -37 3 -CITY (2489) � TTY # 333 -6930

,
F RECEIVED
C. Dept, of ENR R Z 5"b �ISTON -SALEM '
ONAL OFFICE
- GREENSBORO
CITY OF GREENSBORO ,
ENGINEERING DIVISION
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
'THIRD YEAR MONITORING REPORT ' '
CHANNEL STABILITY
APRIL,22, 2014` ,
Prepared, By:
OUS-a., �.L
CWS�
US Infrastructure of Carolina, Inc Carolina Wetland Services, Inc.
125 South Elm Street, Suite 510' _ '550 East Westinghouse Blvd. .
Greensboro', -North Carolina,27401 _Charlotte,,NC 28273 ` r
N C License #C -1950 .

Level 1 Stream Restoration Monitoring
Horsepen Creek Main Tributary #2 and Tributary A
THIRD YEAR MONITORING REPORT
Channel Stability
New Garden Road Widening Phase II
City of Greensboro, North Carolina Engineering Division
Project No. P -3741
April 22, 2014
Prepared by
US Infrastructure of Carolina, Inc
125 South Elm Street, Suite 510
Greensboro, North Carolina 27401
N C License #C -1950
-14'- 22 - /--I/
Carolina Wetland Services, Inc
550 East Westinghouse Blvd.
Charlotte, NC 28273
USI ��
III CWS

Table of Contents
Introduction
Methods
Photo Reference Sites
Channel Stability
Results
Photo Reference Sites
Channel Stability
Main Tributary 42 ........
Tributary A
Summary
Comments
Figures
Figure 1 Site Location Map
Figure 2. As -Built Cross Sections and Photo Location Map
Appendix A .... ......
Photopage 1 — Third Year Monitoring Photographs
Appendix B
Main Tributary #2 Cross Sections
Main Tributary #2 Longitudinal Profile
Main Tributary #2 Pebble Count
Main Tributary #2 Raw Data
Appendix C
Tributary A Cross Sections
Tributary A Longitudinal Profile
Tributary A Pebble Count
Tributary A Raw Data
Page
1
.. 1
.... 1
3
3
3
4
4
7
8
8
7
27
43

Third Year Monitoring Report Channel Stability
New Garden Road Widenmg 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 third year survey was conducted to evaluate and document the conditions of the
relocated stream channels following three 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 and second year surveys.
Methods
Photo Reference Sites
Photographs were taken during
1) Third Year Survey for Channel Stability on April land 17, 2014
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.

Third Year Monitoring Report Channel Stability
New Garden Road Widening Phase II
Project No P -3741
Legend
2,000 1,000 0 2,000 Feet
Project Outer Boundary
REFERENCE USGS 7 5' TOPOGRAPHIC MAP SERIES, GREENSBORO NC QUADRANGLE, DATED 1994
Carolina Wetland Services, Inc.
550E Westinghouse Blvd
Charlotte, NC 28273
Figure 1. Site Location Map
New Garden Road Widening
As -Built Report
Greensboro, North Carolina
Applicant No: I Date: ISheet of
2

Third 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 April 1, 2014 following three 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 II 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 Sates An Illustrated Guide to Field Technique, General Technical Report
RM -245, United States Department of Agriculture, Forest Service. A relative benchmark for the
Third 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 Third 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, and Second Year surveys.
3

Third Year Monitoring Report Channel Stability
New Garden Road Widening Phase II Project No P -3741
Channel Stability
Main Tributary #2
Main Tributary #2 flows north through the project area and through the new culvert installed
beneath the widened New Garden Road. The Third Year survey of Main Tributary #2 was
conducted on April 1, 2014 by representatives from USI and CWS. The relocated stream
channel exhibited substrate consisting of medium gravel (1)50 = 8.0 mm) The channel slope is
0.004 ft/ft with a sinuosity of 1.18. The average bankfull width and depth for this reach are 27
feet and 1.60 feet, respectively. The average bankfull cross sectional area for riffle portions of
the stream is 43.25 ft2. The average flood -prone area width for Main Tributary #2 is
approximately 55 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, and Third Year conditions of
Main Tributary #2 (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 Crnss iectinn A
Date Measured
6/28/2010
1/10/2012
3/19/2013
4/1/2014
Cross - section being measured
A
A
A
A
Cross - sectional area as -built /present
60 01 sf
52 43 sf
50 09 sf
43 25 sf
Bankfull width as- built/present
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
Width/depth as- bui It/pre sent
12 15
13 90
1455
1686
Entrenchment ratio as- built/present
222
222
222
204
Stream Type as- built/present*
C5
C5
C5
C5
I only reyt[tredJot rile ctovv- vections
n

Third Year Monitoring Report Channel Stability
New Garden Road Widening Phase II Project No P -3741
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Third Year Monitoring Report Channel Stability
New Garden Road Widening Phase II
Provide the followma data for each cross - section Cross Section B
ect No P -3741
Date Measured
6/28/2010
1/10/2012
3/19/2013
4/1/2014
Cross - section being measured
B
B
B
B
Cross - sectional area as- built/present
73 91 sf
68 42 sf
64 21 sf
65 28 sf
Bankfull width as- built/present
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
Width/depth as- built/present
986
1065
1135
11 17
Entrenchment ratio as- built/present
259
259
259
2.59
Stream Type as- built/present*
C5
C5
C5
C5
* 0111}' i equn ed for riffle cross- secliofis
The As- Built, First Year, Second Year, and Third 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
Avg slope riffles as- built/present
0 005 ft/ft
0 023 ft/ft
0 020 ft/ft
0 015 ft/ft
Avg slope pools as- built/present
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
Number of riffles as- built/present
1
1
1
1
Number of pools as- built/present
4
4
4
3
The As- Built, First Year, Second Year, and Third 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
Cross - section being measured
A and B
A and B
A and B
A and B
D16 as- built/present
0.125
0.125
0.25
025
D50 as- built/present
05
80
5.7
8.0
D84 as- built/present
11 3
160
160
226
The As- Built, First Year, Second Year, and Third 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
Structure Type
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Is water piping through or around
structure
No
No
No
No
Head cut or down cut present?
No
No
No
No
Bank or scour erosion present?
No
No
No
No
Other problems noted9
No
No
No
No
6

Third 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 Third Year survey of Tributary
A was conducted on April 1, 2014 by representatives from USI and CWS. The relocated stream
channel exhibited substrate consisting of medium gravel (D50 = 11.3 mm). The channel slope is
0.017 ft/ft with a sinuosity of 1.37. The average bankfull width and depth for this reach are 17
feet and 1 87 feet, respectively. The average bankfull cross sectional area for riffle portions of
the stream is 31.76 ft2. The average flood -prone area width for Tributary A is approximately 45
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, and Third 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.
Ar., Ao tho fnlln—na data fnr -nrh rrncc_certmn C'rncc Sertinn C
Date Measured
6/28/2010
1/10/2012
3/19/2013
4/1/2014
Cross - section being measured
C
C
C
C
Cross - sectional area as- built/present
32 45 sf
34 43 sf
26 85 sf
31 76 sf
Bankfull width as- built/present
17 00 ft
17 00 ft
17 00 ft
17 00 ft
Floodprone Width as- built/present
45 00 ft
45 00 ft
45 00 ft
45 00 ft
Width/depth as- built/present
8.91
839
10.76
9.10
Entrenchment ratio as- built/present
265
265
265
265
Stream Type as- built/present*
E4
E4
E4
E4
* only required fot r i fle dross - sections
Prnv,rla tha fnllrnumo dntn fnr Path rrncs- cectinn C'rnsc Section n
Date Measured
6/28/2010
1/10/2012
3/19/2013
4/1/2014
Cross - section being measured
D
D
D
D
Cross - sectional area as- built/present
39 59 sf
44 76 sf
22 68 sf
39.25 sf
Bankfull width as- built/present
19 00 ft
20 50 ft
20 50 ft
19 00 ft
Floodprone Width as- built/present
55 00 ft
55 00 ft
55 00 ft
55 00 ft
Width/depth as- built/present
912
939
1853
920
Entrenchment ratio as- built/present
289
268
2.68
289
Stream Type as- built/present*
E4
E4
E4
E4
* only required for riffle cross - .sections
7

ri
1}.

Third Year Monitoring Report Channel Stability
New Garden Road Widening Phase II Project No P -3741
The As- Built, First Year, Second Year, and Third 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
Avg slope riffles as- built/present
0 023 ft/ft
0 023 ft/ft
0 034 ft/ft
0 030 ft/ft
Avg slope pools as- built/present
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
Number of riffles as- built/present
3
3
3
3
Number of pools as- built/present
4
4
4
4
The As- Built, First Year, Second Year, and Third 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
Cross - section being measured
C and D
C and D
C and D
C and D
D16 as- built/present
0 125
<0 062
0 062
0 062
D50 as- built/present
80
57
11 3
113
D84 as- built/present
226
320
320
640
The As- Built, First Year, Second Year, and Third 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
Structure Type
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Is water piping through or around
structure
No
No
No
No
Head cut or down cut present9
No
No
No
No
Bank or scour erosion present9
No
No
No
No
Other problems noted?
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

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

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
Photo 1: Tributary A — permanent cross section, left bank looking upstream
Photo 2: Tributary A — permanent cross section, left bank looking upstream
H

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
Photo 3: Tributary A — permanent cross section, left bank looking upstream
Photo 4: Tributary A — Root Wad Area A, centerline looking upstream

Third Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase II Project No. P -3741
!All A IN
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Photo 5: Tributary A — Grade Control Sill A, centerline looking upstream
Photo 6: Tributary A — Cross Vane A, left bank looking downstream
12

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
Photo 7: Tributary A — Root Wad Area A, centerline looking upstream
Photo 8: Tributary A — Root Wad Area B, left bank looking downstream
13

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
Z.4
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f
Photo 9: Tributary A — Cross Vane A, left bank looking upstream
;.;
Photo 10: Tributary A — Cross Vane A, left bank looking upstream
14

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

Third Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase II Project No. P -3741
xN4
•� .� i .r r i `tea U'"� C
Photo 13: Tributary A — Confluence with Main Tributary #2, looking downstream
Photo 14: Tributary A — Cross Vane B, left bank looking upstream
16

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
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Photo 15: Main Tributary 42 — permanent cross section, right bank looking upstream
Photo 16: Main Tributary #2 — Root Wad Area D, right bank looking downstream
17

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

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
Photo 19: Main Tributary #2 — Cross Vane D, centerline looking downstream
Photo 20: Main Tributary #2 — Cross Vane D, centerline looking downstream
19

Third Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase II Project No. P -3741
Photo 21: Main Tributary #2 — Cross Vane D, centerline looking downstream
Photo 22: Main Tributary #2 — Root Wad Area D, centerline looking upstream
20

Third Year Monitoring Report: Photo Documentation — Photopage I
New Garden Road Widening Phase I1 Project No. P -3741
Photo 23: Main Tributary #2 — Cross Vane D, left bank looking upstream
Photo 24: Main Tributary #2 — Cross Vane C, left bank looking downstream
21

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
7!� 1
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Photo 25: Main Tributary #2 — Riffle Pool B, centerline looking upstream
Photo 26: Main Tributary #2 — Cross Vane C, centerline looking downstream
0%

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
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Photo 27: Main Tributary 42 — Cross Vane C, right bank looking downstream
Photo 28: Main Tributary 42 — Confluence with Tributary A, looking downstream
23

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
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Photo 29: Main Tributary #2 — Cross Vane C, right bank looking upstream
Photo 30: Main Tributary 92 — Miscellaneous, left bank looking downstream
24

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

Third Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
r
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Photo 33: Main Tributary #2 — New Garden Road culvert, looking upstream
s ,t
5 4
Photo 34: Main Tributary #2 — Downstream of New Garden Road, looking downstream
26

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

Third Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
28
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Third Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II
Project No. P -3741
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Third Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
30
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New Garden Road Widening Phase II Project No. P -3741
31
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Third 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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Third Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
Main Tributary #2 - Pebble Count
34
Metric mm
Particle
S
A
N
D
Count
Tot #
% Tot
% Cum
<0.062
Silt/Clay
12
100
12.0
12.00
0.062 - 0.125
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1
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13.00
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1 2.0
18.00
0.5 - 1.0
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13
100
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31.00
1.0-2.0
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8
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8.0
39.00
2-4
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39.00
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1.0
40.00
5.7-8
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5
100
5.0
45.00
8-11.3
Medium
7
100
7.0
52.00
11.3-16
Medium
21
100
21.0
73.00
16-22.6
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9
100
9.0
82.00
22.6-32
Coarse
7
100
7.0
89.00
32-45
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4
100
4.0
93.00
45-64
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2
100
2.0
95.00
64-90
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100
1.0
96.00
90-128
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1
100
1.0
97.00
128-180
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0
100
0.0
97.00
180-256
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0
100
0.0
97.00
256-362
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B
0
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a
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97.00
362-512
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0
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0.0
97.00
512-1024
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0
100
0.0
97.00
1024-2048
Large - Very Large
0
100
0.0
97.00
Bedrock
jBedrock
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1 100
1 3.0
100.00
34

Third 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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Third Year Monitoring Report: Main Tributary #2
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: 4/1/2014
WS Slope (ft. /ft.) 0.004
CIE
BM 41 (ft.Y- 775.70
Height of
Height
Distance Point
Back -Sight Instrument Fore -Sight Depth
STATION
B.S. ILL
F.S.
Elevation Corrected Elevation CONVENTS
B.M. # 1
3.64 103.64
100.00
0.0
103.64
11.91
91.73
767.43
12.0
103.64
11.97
91.67
767.37
41.0
103.64
12.29
91.35
767.05
75.0
103.64
12.67
90.97
766.67
85.0
103.64
12.79
90.85
766.55
103.0
103.64
12.71
90.93
766.63
110.0
103.64
12.73
90.91
766.61
148.0
103.64
12.71
90.93
766.63
151.0
103.64
12.93
90.71
766.41
165.0
103.64
12.93
90.71
766.41
224.0
103.64
12.93
90.71
766.41
226.0
103.64
13.03
90.61
766.31
264.0
103.64
13.03
90.61
766.31
287.0
103.64
13.03
90.61
766.31
WS Slope (ft. /ft.) 0.004
CIE

Third 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 11
Project Location: Greensboro, NC
Date: 4/1/2014
Thalweg Slope (ft. /ft.) 0.005
Riffle Slope 0.015
40
BM # 1 (ft.)- 775.70
Height of
Height
Distance Point
Back -Sight Instrument Fore -Sight Depth
STATION
B.S. H.1
ES.
Elevation Corrected Elevation
CON51I YTS
B.M. # 1
3.64 103.64
100.00
0.0
103.64
12.14
91.50
767.20
12.0
103.64
12.22
91.42
767.12
HOR
41.0
103.64
12.57
91.07
766.77
75.0
103.64
13.17
90.47
766.17
TOR
85.0
103.64
13.40
90.24
765.94
103.0
103.64
14.41
89.23
764.93
PMD
110.0
103.64
14.63
89.01
764.71
128.0
103.64
13.88
89.76
765.46
PMD
148.0
103.64
13.02
90.62
766.32
CV
151.0
103.64
14.48
89.16
764.86
PMD
165.0
103.64
14.84
88.80
764.50
176.0
103.64
14.11
89.53
765.23
202.0
103.64
13.87
89.77
765.47
224.0
103.64
13.30
90.34
766.04
CV
226.0
103.64
14.74
88.90
764.60
240.0
103.64
15.88
87.76
763.46
PMD
264.0
103.64
14.48
89.16
764.86
PMD
287.0
103.64
13.61
90.03
765.73
HOR
Thalweg Slope (ft. /ft.) 0.005
Riffle Slope 0.015
40

Third Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Left Bankfut! - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 3/19/2013
BM # 1(ft.)== 775.70
41
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
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

Third Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Right Bankf iH - Main Tributary 42
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 3/19/2013
BM #I (ft.)-- 775.70
42
Height of
Height
Distance; Point
Back -Sight Instrument Fore-Sight Depth
STATION
B.S. ]ELL
F.S.
Elevation
Corrected Elevation COMIMM'S
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
297.0
102.12
8.55
93.57
769.27
42

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

Third Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
44
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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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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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Third Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
Tributary A -Pebble Count
W
Metric mm
Particle
S
A
N
D
Count
Tot #
% Tot
% Cum
<0.062
Silt/Clay
16
100
16.0
16.00
0.062 - 0.125
Very Fine Sand
3
100
3.0
19.00
0.125 - 0.250
Fine Sand
11
100
11.0
30.00
0.25-0.5
Med. Sand
2
1 100
1 2.0
1 32.00
0.5 - 1.0
Coarse Sand
6
100
6.0
38.00
1.0-2.0
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2
100
2.0
40.00
2-4
Very Fine Gravel
G
R
A
V
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L
0
100
0.0
40.00
4-5.7
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0
100
0.0
40.00
5.7-8
Fine Gavel
2
100
2.0
42.00
8 - 11.3
Medium
3
100
3.0
45.00
11.3-16
Medium
11
100
11.0
56.00
16-22.6
Coarse
8
100
8.0
64.00
22.6-32
Coarse
8
100
8.0
72.00
32-45
Very Coarse
8
100
8.0
80.00
45-64
Very Coarse
4
100
4.0
1 84.00
64-90
Small
c
O
n
b
e
7
100
7.0
91.00
90-128
Small
1
100
1.0
92.00
128-180
Large
1
100
1.0
93.00
180-256
Large
0
100
0.0
93.00
256-362
Small
e
0
1
d
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r
0
100
0.0
93.00
362-512
Small
0
100
0.0
93.00
512-1024
Medium
0
100
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Third 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: 4/1/2014
BM #I (ft.)= 775.70
WS Slope (ft./ft.) 0.017
Riffle Slope 0.030
iYi]
Height of
Height
Distance; Point Back -Sight
Instrument Fore-Sight Depth
STATION B.S.
ELL
F.S.
Elevation
Corrected Elevation COMMENTS
B.M. # 1 5.75
105.75
100.00
0.0
105.75
12.67
93.08
768.78
10.0
105.75
12.83
92.92
768.62
13.0
105.75
13.40
92.35
768.05
27.0
105.75
13.43
92.32
768.02
44.0
105.75
14.07
91.68
767.38
58.0
105.75
14.07
91.68
767.38
62.0
105.75
14.08
91.67
767.37
77.0
105.75
14.12
91.63
767.33
82.0
105.75
14.15
91.60
767.30
83.0
105.75
14.72
91.03
766.73
93.0
105.75
14.72
91.03
766.73
106.0
105.75
14.72
91.03
766.73
116.0
105.75
14.72
91.03
766.73
119.0
105.75
14.72
91.03
766.73
135.0
105.75
14.72
91.03
766.73
147.0
105.75
14.72
91.03
766.73
148.0
105.75
15.17
90.58
766.28
154.0
105.75
15.17
90.58
766.28
170.0
105.75
15.17
90.58
766.28
185.0
105.75
15.17
90.58
766.28
WS Slope (ft./ft.) 0.017
Riffle Slope 0.030
iYi]

Third Year Monitoring Report: Tributary A
New Garden Road Widening Phase II Project No. P -3741
LONGITUDINAL PROFILE: Tbah+eg - Tributary A
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 4/1/2014
BM # 1 (ft.)== 775.70
Height of Height
Distance; Point Back -Sight Instrument Fore -Sight Depth
STATION R.S. ILL Es. Elevation Corrected Elevation CObLNILNTS
B.M. #I
0.0
10.0
13.0
27.0
44.0
58.0
62.0
77.0
82.0
83.0
93.0
106.0
116.0
119.0
135.0
147.0
148.0
154.0
170.0
185.0
Thalweg Slope (ft. /ft.)
5.75 105.75
100.00
105.75
12.90
92.85
768.55
HOR
105.75
13.09
92.66
768.36
TOR
105.75
14.05
91.70
767.40
PMD
105.75
13.81
91.94
767.64
HOR
105.75
14.22
91.53
767.23
TOR
105.75
14.85
90.90
766.60
PMD
105.75
14.67
91.08
766.78
HOR
105.75
14.41
91.34
767.04
105.75
14.24
91.51
767.21
CV
105.75
15.60
90.15
765.85
PMD
105.75
16.34
89.41
765.11
PMD
105.75
16.30
89.45
765.15
PMD
105.75
15.59
90.16
765.86
PMD
105.75
15.56
90.19
765.89
105.75
15.80
89.95
765.65
105.75
14.85
90.90
766.60
CV
105.75
16.77
88.98
764.68
PMD
105.75
16.72
89.03
764.73
PMD
105.75
15.54
90.21
765.91
HOR
105.75
16.32
89.43
765.13
TOR
0.013
56

Third 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. Elevation Corrected Elevation CONrUff- IS
B.M. # 1
2.56 102.56
100.00
0.0
102.56
7.00
95.56
771.26
10.0
102.56
7.51
95.05
770.75
27.0
102.56
7.38
95.18
770.88
44.0
102.56
7.65
94.91
770.61
62.0
102.56
8.06
94.50
770.20
77.0
102.56
8.45
94.11
769.81
82.0
102.56
8.45
94.11
769.81
119.0
102.56
9.45
93.11
768.81
135.0
102.56
8.82
93.74
769.44
147.0
102.56
8.75
93.81
769.51
170.0
102.56
8.86
93.70
769.40
57

Third 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 11
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 COMDUN'i'S
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
94.26
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