HomeMy WebLinkAbout20060684 Ver 1_Year 4 Monitoring Report_20150518�- aos�-A
RECEIVED
N.C. Dept. of ENR
z' MAY 18 2015
WI NSTON -SALE M
REGIONAL OFFICE
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
FOURTH YEAR MONITORING REPORT
CHANNEL STABILITY
MAY 14, 2015
Prepared By:
iwa�
ry10,
c Infrastructure of Carolina, Inc.
125 South Elm Street, Suite 510
Greensboro, North Carolina 27401
N.C. License #C -1950
.I
Cws
Carolina Wetland Services, Inc.
550 East Westinghouse Blvd.
Charlotte, NC 28273
TO: NCDENR, DIV. OF WATER RESOURCES DATE: MAY 15, 2015
WINSTON -SALEM REGIONAL OFFICE PROJECT: DWQ #06 -0684
450 W. HANES MILL ROAD, SUITE 300 RE: NEW GARDEN ROAD
WINSTON- SALEM, NC 27105 STREAM RESTORATION
ATTENTION: SUE HOMEWOOD MONITORING RECORD
WE ARE SENDING YOU:
® ATTACHED ❑ UNDER SEPARATE COVER VIA
THE FOLLOWING ITEMS:
❑ SHOP DRAWINGS ❑ PRINTS ❑ SPECIFICATIONS ❑ PLANS
❑ CHANGE ORDER ❑ LETTER ® OTHER
COPIES
DATE
REVISION
DESCRIPTION
1
05/14/2015
FOR YOUR USE
LEVEL 1 STREAM RESTORATION MONITORING
AS REQUESTED
❑
FOR REVIEW
FOURTH YEAR MONITORING REPORT,
RESUBMITTED
❑
FOR DISTRIBUTION
CHANNEL STABILITY
OTHER
THESE ARE TRANSMITTED AS CHECKED BELOW:
❑
FOR APPROVAL
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®
FOR YOUR USE
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AS REQUESTED
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FOR REVIEW
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FOR DISTRIBUTION
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OTHER
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❑ RETURNED AFTER LOAN
COPY TO USACE, FILE SIGNED GUY B. INGLE
PO Box 3136 Greensboro, VC 27402 -3136 www greensboro -nc gov 336-373-CITY (2489) TTY # 333 -6930
69City of Greensboro
6-,j North Carolina
ammQ ors E2LL2�2=
TO: U.S. ARMY CORPS OF ENGINEERS DATE:
RALEIGH REGULATORY FIELD OFFICE PROJECT:
3331 HERITAGE TRADE DRIVE, SUITE 105 RE:
WAKE FOREST, NC 27587
ATTENTION: MR. THOMAS BROWN
MR. ANDREW WILLIAMS
WE ARE SENDING YOU:
N ATTACHED ❑ UNDER SEPARATE COVER VIA
THE FOLLOWING ITEMS:
❑ SHOP DRAWINGS ❑ PRINTS ❑ SPECIFICATIONS
❑ CHANGE ORDER ❑ LETTER N OTHER
RECEIVED
N C Dept of ENR
�a
MAY 18 2015
�' tc jF k #'- ctions
MAY 15, 2015
SAW- 2007 -03980
NEW GARDEN ROAD
STREAM RESTORATION
MONITORING RECORD
❑ PLANS
COPIES
DATE
REVISION
DESCRIPTION
1
5/15/2015
LEVEL I STREAM RESTORATION MONITORING
FOURTH YEAR MONITORING REPORT,
CHANNEL STABILITY
THESE ARE TRANSMITTED AS CHECKED BELOW:
❑ FOR APPROVAL ❑ APPROVED AS SUBMITTED
N FOR YOUR USE ❑ AS REQUESTED
❑ FOR REVIEW ❑ RESUBMITTED
❑ FOR DISTRIBUTION ❑ OTHER
COMMENTS:
COPY To FILE. NCDENR -DWQ
❑ APPROVED AS NOTED
❑ RETURNED FOR CORRECTIONS
❑ RETURNED AFTER LOAN
SIGNED GUY B. INGLE
PO Box 3136- Greensboro, NC 27402-3136 = www greensboro -nc gov , 336 -373 -CITY (2489) = TTY # 333 -6930
Level 1 Stream Restoration Monitoring
Horsepen Creek Main Tributary #2 and Tributary A
FOURTH YEAR MONITORING REPORT
Channel Stability
New Garden Road Widening Phase II
City of Greensboro, North Carolina Engineering Division
Project No. P -3741
May 14, 2015
Prepared by
US Infrastructure of Carolina, Inc
125 South Elm Street, Suite 510
Greensboro, North Carolina 27401
N C License #C -1950
0
Carolina Wetland Services, Inc
550 East Westinghouse Blvd
Charlotte, NC 28273
d1� cws
Table of Contents
Page
Introduction.
1
Methods
1
Photo Reference Sites
1
Channel Stability . . , .
3
Results
3
Photo Reference Sites
3
Channel Stability
..4
Main Tributary #2
4
Tributary A
7
Summary
„g
Comments
8
Figures
Figure 1 Site Location Map
2
Figure 2 As -Built Cross Sections and Photo Location Map ...
5
Appendix A
9
Photopage 1 - Fourth Year Monitoring Photographs
Appendix B
27
Main Tributary #2 Cross Sections
Main Tributary 42 Longitudinal Profile
Main Tributary #2 Pebble Count
Main Tributary #2 Raw Data
Appendix C
........ 43
Tributary A Cross Sections
Tributary A Longitudinal Profile
Tributary A Pebble Count
Tributary A Raw Data
Fourth 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 fourth year survey was conducted to evaluate and document the conditions of
the relocated stream channels following four 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, and third year surveys.
Methods
Photo Reference Sites
Photographs were taken during:
1) Fourth Year Survey for Channel Stability on March 31, 2015
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.
Fourth Year Monitoring Report Channel Stability
New Garden Road Widening Phase II Project No P -3741
Legend
2,000 1,000 0 2,000 Feet
Protect Outer Boundary
REFERENCE USGS 7 6 TOPOGRAPHIC MAP SERIES, GREENSBORO NC QUADRANGLE, DATED 1994
Carolina Wetland Services, Inc.
C�) ��� 550E Westinghouse Blvd
Charlotte, NC 28273
Figure 1. Site Location Map
New Garden Road Widening
As -Built Report
Greensboro, North Carolina
IApplicant No: IDate: ISheet of
Fourth 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 7.6 TOPOGRAPHIC MAP SERIES, GREENSBORO NC QUADRANGLE, DATED 1994
I� Carolina Wetland Services, Inc.
IJ C 550 E. Westinghouse Blvd.
�J WS Charlotte, NC 28273
Figure 1. Site Location Map
New Garden Road Widening
As -Built Report
Greensboro, North Carolina
IApplicant No: IDate: (Sheet of
Fourth 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 31, 2015 following four 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
Fourth 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 Fourth 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, and Third Year surveys.
3
Fourth 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 Fourth Year survey of Main Tributary #2 was
conducted on March 31, 2015 by representatives from USI and CWS. The relocated stream
channel exhibited substrate consisting of medium gravel (1350 = 11.3 mm) The channel slope is
0.004 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 43.04 ft2. The average flood -prone area width for Main Tributary #2 is
approximately 58.10 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, and Fourth 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 crncs- cectinn C'rncs Cerfinn A
Date Measured
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
Cross - section being measured
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
Bankfull width as- built/present
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
Width /depth as -built /present
12 15
1390
1455
1686
1694
Entrenchment ratio as-bui It/pre sent
222
222
222
204
2 15
Stream Type as -built /present*
C5
C5
C5
C5
C5
nnty i equii ea /or ri //te c°r os s -sic ?torts
4
Fourth Year Monitoring Report: Channel Stability
New Garden Road Widening Phase I1 Project No. P -3741
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Fourth Year Monitoring Report Channel Stability
New Garden Road Widening Phase II Project No P -3741
Provide the follnwmQ data fnr ench crnc,z- cectmn C rncc CPefinn R
Date Measured
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
Cross - section being measured
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
Bankfull width as- built/present
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
Width/depth as- built/present
986
1065
1135
11 17
11 74
Entrenchment ratio as- built/present
259
259
259
259
235
Stream Type as- built/present*
C5
C5
C5
C5
C5
T onij• i eyun ea for riffle cross- sections
The As- Built, First Year, Second Year, Third Year, and Fourth Year conditions of Main
Tributary 42 (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
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
Avg slope pools as-bui It/pre sent
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
Number of pools as- built/present
4
4
4
3
4
The As- Built, First Year, Second Year, Third Year, and Fourth 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
Cross - section being measured
A and B
A and B
A and B
A and B
A and B
D16 as- built/present
0 125
0 125
025
025
025
D50 as -built /present
05
80
5 7
80
11.3
D84 as- built/present
11 3
160
160
226
320
The As- Built, First Year, Second Year, Third Year, and Fourth 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
Structure Type
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Is water piping through or around
structure9
No
No
No
No
No
Head cut or down cut present?
No
No
No
No
No
Bank or scour erosion present9
No I
No
No
No
No
Other problems noted9
No I
No
No
No
No
0
Fourth 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 42. The Fourth Year survey of
Tributary A was conducted on March 31, 2015 by representatives from USI and CWS The
relocated stream channel exhibited substrate consisting of medium gravel (1350 = 11 ) 3 mm) The
channel slope is 0 014 ft/ft with a sinuosity of 137 The average bankfull width and depth for
this reach are 17 feet and 1.98 feet, respectively. The average bankfull cross sectional area for
riffle portions of the stream is 33 65 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, Third Year, and Fourth 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 fallowing data fnr ench crnc z_QPrtlnn Crnee CPpfinn f
Date Measured
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
Cross - section being measured
C
C
C
C
C
Cross - sectional area as- built/present
32 45 sf
34 43 sf
26 85 sf
31 76 sf
33 65 sf
Bankfull width as- built/present
17 00 ft
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
45 00 ft
Width /depth as- built/present
891
839
10.76
9.10
8.59
Entrenchment ratio as- built/present
265
265
265
265
265
Stream Type as- built/present*
E4
E4
E4
E4
E4
nncvrequirealrn frniec/oss- secnons
Provide the following data for enrh rrncc_QPrfinn Crnee CPpfinn it
Date Measured
6/28/2010
1/10/2012
3/19/2013
4/1/2014
3/31/2015
Cross - section being measured
D
D
D
D
D
Cross - sectional area as-built/present
39 59 sf
44 76 sf
22 68 sf
39 25 sf
40 71 sf
Bankfull width as- built/present
19 00 ft
20 50 ft
20 50 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
Width /depth as- built/present
9 12
939
18 53
920
887
Entrenchment ratio as -built /present
289
268
268
289
268
Stream Type as- built/present* I
E4
E4
E4
E4
E4
urecy requireu /or/ y/ie cross- secnom
7
Fourth Year Monitoring Report Channel Stability
New Garden Road Widening Phase II
Project No P -3741
The As- Built, First Year, Second Year, Third Year, and Fourth 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
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
Avg slope pools as- built/present
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
0 ft/ft
Number of riffles as -built /present
3
3
3
3
3
Number of pools as- built/present
4
4
4
4
4
The As- Built, First Year, Second Year, Third Year, and Fourth 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
Cross - section being measured
C and D
C and D
C and D
C and D
C and D
D16 as- bui It/pre sent
0 125
<0 062
0 062
0 062
<0 062
D50 as- built/present
80
5 7
113
113
113
D84 as- built/present
226
320
320
640
450
The As- Built, First Year, Second Year, Third Year, and Fourth 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
Structure Type
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Cross Vane
Is water piping through or around
structure
No
No
No
No
No
Head cut or down cut present?
No
No
No
No
No
Bank or scour erosion present?
No
No
No
No
No
Other problems noted?
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
Fourth Year Monitoring Report Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No P -3741
Appendix A
Photopage 1 — Fourth Year Monitoring Photographs
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Proiect 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
C
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Proiect No. P -3741
l
Photo 3: Tributary A — permanent cross section, left bank looking upstream
Photo 4: Tributary A — Root Wad Area A, centerline looking, upstream
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase 11 Proiect No. P -3741
Photo 5: Tributary A — Grade Control Sill A, centerline looking upstream
Photo 6: Tributary A — Cross Vane A, left bank looking downstream
12
Fourth Year Monitoring Report: Photo Documentation— Photopage 1
New Garden Road Widening Phase II Project No. P -3741
.MIA, 7-1'
Photo 7: Tributary A — Root Wad Area A, centerline looking upstream
Photo 8: Tributary A — Root Wad Area B, left bank looking downstream
13
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II
Photo 9: Tributary A — Cross Vane A, left bank looking upstream
ect No. P -3741
Photo 10: Tributary A — Cross Vane A, left bank looking upstream
14
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
ial k if licnin; r114-50 11 f roject . •
fit
IN
NN_ : / aqr'. I ?� �` ►, � � cry • w .',�. �*
15
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
K
Photo 13: Tributary A — Confluence with Main Tributary #2, looking downstream
Photo 14: Tributary A — Cross Vane B, left bank looking upstream
UR
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
1
J }
Photo 15: Main Tributary #2 — permanent cross section, right bank looking upstream
Photo 16: Main Tributary #2 — Root Wad Area D, right bank looking downstream
17
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase H
Project No. P -3741
Photo 17: Main Tributary #2 — Root Wad Area D, centerline looking downstream
Photo 18: Main Tributary #2 — permanent cross section, centerline looking upstream
18
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
i.�W vMi .Ij vau ry Cell q; ruabc 11
Photo 19: Main Tributary 42 — Cross Vane D, centerline looking downstream
NO. Y -J /41
Photo 20: Main Tributary #2 — Cross Vane D, centerline looking downstream
K
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Proiect No. P -3741
Photo 21: Main Tributary 92 — Cross Vane D, centerline looking downstream
Photo 22: Main Tributary #2 — Root Wad Area D, centerline looking upstream
20
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Proiect 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
Fourth Year Monitoring Report: Photo Documentation— Photopage 1
New Garden Road Widenin; Phase 11 Project No. P -3741
}
Photo 25: Main Tributary 42 — Riffle Pool B, centerline looking upstream
Photo 26: Main Tributary #2 — Cross Vane C, centerline looking downstream
22
Fourth Year Monitoring Report: Photo Documentation— Photopage 1
ivcw varucn moau wruenrng rnase it Project NO. Y -j /41
r
1� ,,' ♦ ' ,
r
Photo 27: Main Tributary 42 r Cross Vane C, right bank looking downstream
Photo 28: Main Tributary #2 — Confluence with Tributary A, looking downstream
23
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
Photo 29: Main Tributary #2 — Cross Vane C, right bank looking upstream
Photo 30: Main Tributary #2 — Miscellaneous, left bank looking downstream
24
Fourth 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
Photo 32: Main Tributary #2 — Root Wad D, left bank looking downstream
25
Fourth Year Monitoring Report: Photo Documentation — Photopage 1
New Garden Road Widening Phase II Project No. P -3741
It / S
to s
Y
Photo 33: Main Tributary #2 — New Garden Road culvert, looking upstream
Photo 34: Main Tributary #2 — Downstream of New Garden Road, looking downstream
26
Fourth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
Appendix B
Main Tributary #2 Cross Sections
Fourth Year Monitoring
Comparison — As- Built, First Year, Second Year, Third Year, and Fourth Year
Main Tributary #2 Longitudinal Profile
Fourth Year Monitoring
Comparison — First Year, Second Year, Third Year, and Fourth Year
Main Tributary #2 Pebble Count
Main Tributary #2 Raw Data
Fourth Year Monitoring
27
Fourth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
28
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New Garden Road Widening Phase II Project No. P -3741
Main Tributary #2 - Pebble Count
34
Metric mm
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S
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Tot #
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14
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G
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0
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3
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41.05
8-11.3
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5
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46.32
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Medium
16
95
16.8
63.16
16-22.6
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13
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13.7
76.84
22.6-32
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6
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6.3
83.16
32-45
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5
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88.42
45-64
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3
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91.58
64-90
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0
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96.84
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0
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0
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0
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0.0
97.89
Bedrock I
Bedrock
2 1
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34
Fourth Year Monitoring Report: Main Tributary #2
New Garden Road Widening Phase II Project No. P -3741
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Fourth Year Monitoring Report Main Tributary 92
New Garden Road Widening Phase II Project No P -3741
LONGITUDINAL PROFILE: Water Surface - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Protect Location Greensboro, NC
Date: 3/31/2015
WS Slope (ft /ft ) 0 004
39
BM #1 (ft )=
775 70
Height of
Height
Distance, Point
Back -Sight Instrument Fore -Sight
Depth
STATION
BS ILL
FS
Depth
Elevation
CorrectedDevahon COMMENTS
BM 91
282 10282
10000
00
10282
11 18
0 24
91 88
76758
20
10282
11 12
016
9186
76756
50
10282
11 37
035
91 80
76750
110
10282
11 46
045
91 81
76751
370
10282
11 95
064
91 51
76721
590
10282
11 72
030
9140
767 10
820
10282
1240
064
91 06
76676
990
10282
1324
146
9104
76674
1090
10282
1356
1 80
9106
76676
1270
10282
1281
1 04
91 05
76675
1480
10282
1201
018
9099
76669
1510
10282
1336
1 42
9088
76658
1620
10282
1371
1 73
9084
76654
1760
10282
1290
092
9084
76654
2020
10282
1289
090
9083
76653
2240
10282
1230
030
9082
76652
2250
10282
1367
160
9075
76645
2260
10282
1389
186
9079
76649
2400
10282
1458
251
9075
76645
2640
10282
1332
126
9076
76646
2870
10282
1234
025
9073
76643
WS Slope (ft /ft ) 0 004
39
Fourth 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: 3/31/2015
Thalweg Slope (ft /ft) 0 004
Riffle Slope 0 015
ail,
BM # 1 (ft)-- 775 70
Height of
Height
Distance, Point
Back -Sight
Instrument Fore -Sight Depth
STATION
BS
HL
FS
Elevation Corrected Elevation
CONWENTS
BM #1
282
10282
10000
00
10282
11 18
9164
76734
20
10282
11 12
9170
76740
50
10282
1137
9145
76715
TOR
110
10282
1146
91 36
76706
370
10282
1195
9087
76657
590
10282
1172
91 10
76680
HOR
820
10282
1240
9042
76612
TOR
990
10282
1324
8958
76528
PMD
1090
10282
1356
8926
76496
1270
10282
1281
9001
76571
PMD
1480
10282
1201
9081
76651
CV
1510
10282
1336
8946
76516
PMD
1620
10282
1371
8911
76481
1760
10282
1290
8992
76562
2020
10282
1289
8993
76563
CV
2240
10282
1230
9052
76622
2250
10282
1367
8915
76485
PMD
2260
10282
1389
8893
76463
PMD
2400
10282
1458
8824
76394
2640
10282
1332
8950
76520
HOR
2870
10282
1234
9048
76618
Thalweg Slope (ft /ft) 0 004
Riffle Slope 0 015
ail,
Fourth Year Monitoring Report Main Tributary #2
New Garden Road Widening Phase II Project No P -3741
LONGITUDINAL PROFILE: Left Bankfull - Main Tributary #2
Project Name: New Garden Road Widening Phase II
Project Location: Greensboro, NC
Date: 3/19/2013
BM 41 (ft )— 775 70
Height of Height
Distance, Pomt Back -Sight Instrument Fore -Sight Depth
STATION BS ILL FS Elevation Corrected Elevation CONINIFAIS
BM #1
212 10212
10000
50
10212
833
9379
76949
370
10212
847
9365
76935
590
10212
832
9380
76950
820
10212
845
9367
76937
1090
10212
852
9360
76930
1270
10212
834
9378
76948
1480
10212
8 15
9397
76967
1760
10212
829
9383
76953
2020
10212
846
9366
76936
2240
10212
793
9419
76989
2400
10212
781
9431
77001
2640
10212
798
9414
76984
2870
10212
801
9411
76981
41
Fourth 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
Pr4lect Location: Greensboro, NC
Date: 3/19/2013
BM #1 (ft )= 775 70
Height of Height
Distance, Point Back -Sight Instrument Fore -Sight Depth
STATION BS ELL FS Elevation Corrected Elevation COMMENTS
BM #1
212 10212
10000
50
10212
788
9424
76994
370
10212
761
9451
77021
590
10212
804
9408
76978
820
10212
807
9405
76975
1090
10212
865
9347
76917
1270
10212
819
9393
76963
1480
10212
822
9390
76960
1760
10212
851
9361
76931
2020
10212
852
9360
76930
2240
10212
831
9381
76951
2400
10212
827
9385
76955
2640
10212
874
9338
76908
2870
10212
855
9357
76927
42
Fourth Year Monitoring Report Tributary A
New Garden Road Widening Phase II Project No P -3741
Appendix C
Tributary A Cross Sections
Fourth Year Monitoring
Comparison — As- Built, First Year, Second Year, Third Year, and Fourth Year
Tributary A Longitudinal Profile
Fourth Year Monitoring
Comparison — First Year, Second Year, Third Year, and Fourth Year
Tributary A Pebble Count
Tributary A Raw Data
Fourth Year Monitoring
43
Fourth 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
Tributary A - Pebble Count
50
Metric (mm)
Particle
S
A
N
D
Count
Tot #
% Tot
% Cum
<0 062
Silt /Clay
2
110
18
182
0062-0125
Very Fuse Sand
26
110
236
2545
0125-0250
Fine Sand
9
110
82
3364
025-05
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3
1 110
27
3636
05-10
Coarse Sand
6
110
5 5
41 82
10-20
Very Coarse Sand
3
1 110
27
4455
2-4
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G
R
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V
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L
0
110
00
4455
4-57
Fine Gravel
0
110
00
4455
5 7- 8
Fine Gravel
4
110
36
4818
8-113
Medium
0
110
00
4818
11 3 -16
Medium
11
110
100
5818
16-226
Coarse
5
110
45
6273
226-32
Coarse
11
110
100
7273
32-45
Very Coarse
13
110
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45-64
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8 1
110
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64-90
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C
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110
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45
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90-128
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1
110
09
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0
110
00
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256-362
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0
110
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110
09
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0
110
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1
110
09
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Fourth 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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Fourth 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 Widenng Phase II
Project Location Greensboro, NC
Date: 3/31/2015
WS Slope (ft /ft ) 0016
Riffle Slope 0 019
55
BM # 1 (ft )-- 775 70
Height of
Height
Distance, Point
Back -Sight Instrument Fore -Sight
Depth
STATION
B.S. ILL
F.S.
Depth
Elevation Corrected Elevation
BM #1
476 10476
10000
00
10476
1192
019
9303
76873
100
10476
1187
010
9299
76869
130
10476
1261
015
9230
76800
270
10476
1273
018
9221
76791
440
10476
1321
020
9175
76745
580
10476
1369
059
9166
76736
620
10476
1361
051
9166
76736
770
10476
1339
030
9167
76737
820
10476
1322
012
9166
76736
830
10476
1465
097
9108
76678
930
10476
1531
158
9103
76673
1060
10476
1499
128
9105
76675
1160
10476
1460
088
9104
76674
1190
10476
1481
108
9103
76673
1350
10476
1465
094
9105
76675
1470
10476
1383
010
9103
76673
1480
10476
1591
175
9060
76630
1540
10476
1574
158
9060
76630
1700
10476
1458
042
9060
76630
1850
10476
1535
1 18
9059
76629
WS Slope (ft /ft ) 0016
Riffle Slope 0 019
55
Fourth 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 II
Project Location: Greensboro, NC
Date: 3/31/2015
Thalweg Slope (ft /ft ) 0 014
56
BM # 1 (ft )= 77570
Height of
Height
Distance, Point
Back -Sight
Instrument Fore -Sight Depth
STATION
B S
RL
FS
Elevation Corrected Elevation
CON NUMIS
BM 41
476
10476
10000
00
10476
1192
9284
76854
HOR
100
10476
1187
9289
76859
TOR
130
10476
1261
9215
76785
PMD
270
10476
1273
9203
76773
HOR
440
10476
1321
9155
76725
TOR
580
10476
1369
9107
76677
PMD
620
10476
1361
91 15
76685
HOR
770
10476
1339
9137
76707
820
10476
1322
9154
76724
CV
830
10476
1465
9011
76581
PMD
930
10476
1531
8945
76515
PMD
1060
10476
1499
8977
76547
PMD
1160
10476
1460
9016
76586
PMD
1190
10476
1481
8995
76565
1350
10476
1465
9011
76581
1470
10476
1383
9093
76663
CV
1480
10476
1591
8885
76455
PMD
1540
10476
1574
8902
76472
PMD
1700
10476
1458
9019
76588
HOR
1850
10476
1535
8941
76511
TOR
Thalweg Slope (ft /ft ) 0 014
56
Fourth 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
UVA
BM #I (ft)-- 775 70
Height of
Height
Distance, Point
Back -Sight
Instrument Fore -Sight Depth
STATION
BS
ILL
FS
Elevation Corrected Elevation CONIMEVTS
BM #1
256
10256
10000
00
10256
700
9556
77126
100
10256
751
9505
77075
270
10256
738
9518
77088
440
10256
765
9491
77061
620
10256
806
9450
77020
770
10256
845
9411
76981
820
10256
845
9411
76981
1190
10256
945
9311
76881
1350
10256
882
9374
76944
1470
10256
875
9381
76951
1700
10256
886
9370
76940
UVA
Fourth 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, Pomt
Back -Sight
Instrument Fore -Sight Depth
STATION
BS
ELL
FS
Elevation CorrectedBewtlon COMMENTS
BM #1
256
10256
10000
00
10256
719
9537
77107
100
10256
697
9559
77129
270
10256
740
9516
77086
440
10256
733
9523
77093
620
10256
830
9426
76996
770
10256
807
9449
77019
820
10256
814
9442
77012
1190
10256
884
9372
76942
1350
10256
893
9363
76933
1470
10256
866
9390
76960
1700
10256
908
9348
76918
58