OIB TG Sediment Summary Letter 03/21/2022

-111-�
COASTAL
PROTECTICM
ENSINEERING
March 21, 2022
Mickey Sugg, Chief
Wilmington Regulatory Field Office
U.S. Army Corps of Engineers
69 Darlington Avenue
Wilmington, NC 28403
Subject: Ocean Isle Beach Sediment Samples
Dear Mr. Sugg,
Brad Rosov
Project Manager/Senior Marine Biologist
Coastal Protection Engineering of North Carolina, Inc.
4038 Masonboro Loop Road
Wilmington, North Carolina
Tel: [phone]
[e-mail]
On Thursday, March 10, 2022, Norfolk Dredging Company (NDC) began placing sand within the remaining
portion of the accretion fillet associated with the Town of Ocean Isle Beach's Terminal Groin project. As is
required by the Department of Army individual Permit #SAW-2011-101241, Special Condition #13, one (1)
sediment sample was to be collected by Coastal Protection Engineering of North Carolina, Inc. (CPE) each
morning that sand was being placed within the fillet (between Station -1+66 and Station 10+00). Sand samples
were collected between February 10 and Feb 17 when material was placed between Stations 2+00 and 10+00. The
results of those sediment samples were sent to you on February 28. Between March 10 and March 12, material
was placed between Station -1+66 and 2+00. During this time, three (3) additional sediment samples were
collected. Sediment samples were processed for sediment grain size, silt %, and calcium carbonate %. The results
of this analysis are provided below.
Sampling locations were dependent on the location of the active outfall pipe each morning. Station locations and
coordinates (latitude, longitude) for each sample are presented in Table 1. Sampling locations are also shown in
Figure 1. Mean grain size ranged from 0.28 to 0.36mm. Percent fines ranged from 0.42 to 0.73%. Percent calcium
carbonate content ranged from 5 to 6%. A summary of results (mean grain size, % fines, % calcium carbonate,
and Munsell colors) for each sample are presented in Table 2. Individual granularmetric reports and grain size
distribution curves/histograms for each sample are provided in Appendix 1 and Appendix 2, respectively.
Table 1. Summary of sampling location and collection dates for each sample.
Sample Id
Collection Date
Station
Latitude
Longitude
01B SS 009
2022-03-10
1+00
33.89831
-78.391204
OIB SS 010
2022-03-11
1+00
33.89781
-78.391033
01B SS 011
1 2022-03-12
1 1+00
33.89770
1 -78.390967

Table 2. Summary of sedimentary characteristics for each sample.
Sample Id
Mean Grain Size
(mm)
Fines
(/)
Calcium a
Carbonate (/)
Wet Munsell
Color
Dry Munsell
Color
Washed Munsell
Color
01B SS 009
0.28
0.73
6
2.5Y 4/1
2.5Y 6/1
2.5Y 7/1
01B SS 010
0.29
0.70
5
2.5Y 4/1
2.5Y 6/1
2.5Y 7/1
01B SS 011
0.36
0.42
6
2.5Y 5/1
2.5Y 6/1
2.5Y 7/1
OlB Accretion Fillet Sediment Sample Location Map r. VMS Legend
m I • GIB SS
ku
all,i
FAN
D6AGSn —SANOBXc
'.
3WST r. 1RDST
N"k0JE(i�A*5�ELI��
FIELD VERFIED,
,.a '7
.- .
.. i
cora •w ,.. r� r_ (j'�=� A 0 era..
r.@% aa. • \:J1=1 as o e�•o 1
j — OPTION ITEM 7
CONSTRUCTION BERM o
o a : ELEVATION +6 P (NAVD ea)
AML
Figure 1. Sediment sampling locations on Ocean Isle Beach, NC.
Now that the fill operation has been completed, no additional sediment sampling is required. Should you have
any questions or require additional information, please do not hesitate to contact me any time.
Sincerely,
COASTAL PROTECTION ENGINEERING OF NORTH CAROLINA, INC.
Brad Rosov
Project Manager/Senior Marine Biologist

APPENDIX 1
OCEAN ISLE BEACH TERMINAL GROIN SEDIMENT GRANULARMETRIC REPORTS

Granularmetric Report
Depths and elevations based on measured values
COASTAL
PROTECTION
ENGINEERING
Coastal Protection Engineering of North Carolina, Inc.
4038 Masonboro Loop Road
Wilmington NC 28409
Office: 910-399-1905
Project Name: Ocean Isle Beach Terminal Groin
Sample Name: OIB SS 009
AnalAnalysis Date: 2022-03-17
Y
Analyzed By: Ryan Watson
Easting (ft):
2,184,776
Northing (ft):
54,546
Coordinate System:
North Carolina State Plane
Elevation (ft):
USCS:
SIP
Munsell: Wet - 2.5Y-4/1
Dry - 2.5Y-6/1
Washed - 2.5Y-7/1
Comments:
N/A
Dry Weight (g):
209.44
Wash Weight (g):
208.09
Pan Retained (g):
0.00
Sieve Loss (%):
0.05
Fines /):
#20 - 0.73
#230 - 0.69
Organics (%:
N/A
Carbonates (%:
6.00
Shells (%):
N/A
Sieve Number
Sieve Size
(Phi)
Sieve Size
(Millimeters)
Grams
Retained
% Weight
Retained
Cum. Grams
Retained
C. % Weight
Retained
3/4"
-4.25
19.03
0.00
0.00
0.00
0.00
5/8"
-4.00
16.00
0.00
0.00
0.00
0.00
11/16"
-3.50
11.31
0.00
0.00
0.00
0.00
5/16"
-3.00
8.00
0.00
0.00
0.00
0.00
3.5
-2.50
5.66
0.20
0.10
0.20
0.10
4
-2.25
4.76
0.14
0.07
0.34
0.16
5
-2.00
4.00
0.14
0.07
0.48
0.23
7
-1.50
2.83
0.68
0.32
1.16
0.55
10
-1.00
2.00
0.64
0.31
1.80
0.86
14
-0.50
1.41
0.98
0.47
2.78
1.33
18
0.00
1.00
1.61
0.77
4.39
2.10
25
0.50
0.71
5.22
2.49
9.61
4.59
35
1.00
0.50
13.69
6.54
23.30
11.12
45
1.50
0.35
30.10
14.37
53.40
25.50
60
2.00
0.25
60.62
28.94
114.02
54.44
80
2.50
0.18
63.87
30.50
177.89
84.94
120
3.00
0.13
26.86
12.82
204.75
97.76
170
3.50
0.09
2.99
1.43
207.74
99.19
200
3.75
0.07
0.18
0.09
207.92
99.27
230
4.00
0.06
0.07
0.03
207.99
99.31
Phi 5
Phi 16
Phi 25
Phi 50
Phi 75
Phi 84
Phi 95
2.89
2.48
2.34
1.92
1.48
1.17
0.53
Moment
Mean Phi
Mean mm
Sorting
Skewness
Kurtosis
Statistics
1.82
0.28
0.75
-1.41
7.47

Granularmetric Report
Depths and elevations based on measured values
COASTAL
PROTECTION
ENGINEERING
Coastal Protection Engineering of North Carolina, Inc.
4038 Masonboro Loop Road
Wilmington NC 28409
Office: 910-399-1905
Project Name: Ocean Isle Beach Terminal Groin
Sample Name: OIB SS 010
AnalAnalysis Date: 2022-03-17
Y
Analyzed By: Ryan Watson
Easting (ft):
2,184,829
Northing (ft):
54,367
Coordinate System:
North Carolina State Plane
Elevation (ft):
USCS:
SF
Munsell: Wet - 2.5Y-4/1
Dry - 2.5Y-6/1
Washed - 2.5Y-7/1
Comments:
N/A
Dry Weight (g):
210.37
Wash Weight (g):
208.96
Pan Retained (g):
0.00
Sieve Loss (%):
0.00
Fines /):
#20 - 0.70
#230 - 0.67
Organics (%):
N/A
Carbonates (%):
5.00
Shells (%):
N/A
Sieve Number
Sieve Size
(Phi)
Sieve Size
(Millimeters)
Grams
Retained
% Weight
Retained
Cum. Grams
Retained
C. % Weight
Retained
3/4"
-4.25
19.03
0.00
0.00
0.00
0.00
5/8"
-4.00
16.00
0.00
0.00
0.00
0.00
11/16"
-3.50
11.31
0.00
0.00
0.00
0.00
5/16"
-3.00
8.00
0.00
0.00
0.00
0.00
3.5
-2.50
5.66
0.29
0.14
0.29
0.14
4
-2.25
4.76
0.16
0.08
0.45
0.21
5
-2.00
4.00
0.52
0.25
0.97
0.46
7
-1.50
2.83
0.61
0.29
1.58
0.75
10
-1.00
2.00
0.77
0.37
2.35
1.12
14
-0.50
1.41
1.53
0.73
3.88
1.84
18
0.00
1.00
2.33
1.11
6.21
2.95
25
0.50
0.71
5.32
2.53
11.53
5.48
35
1.00
0.50
15.91
7.56
27.44
13.04
45
1.50
0.35
33.23
15.80
60.67
28.84
60
2.00
0.25
58.77
27.94
119.44
56.78
80
2.50
0.18
57.93
27.54
177.37
84.31
120
3.00
0.13
28.57
13.58
205.94
97.89
170
3.50
0.09
2.77
1.32
208.71
99.21
200
3.75
0.07
0.19
0.09
208.90
99.30
230
4.00
0.06
0.06
0.03
208.96
99.33
Phi 5
Phi 16
Phi 25
Phi 50
Phi 75
Phi 84
Phi 95
2.89
2.49
2.33
1.88
1.38
1.09
0.41
Moment
Mean Phi
Mean mm
Sorting
Skewness
Kurtosis
Statistics
1.77
0.29
0.81
-1.44
7.26

0
a
LU
U
K
I-
LU
Q
Z
Q
Granularmetric Report
Depths and elevations based on measured values
COASTAL
PROTECTION
ENGINEERING
Coastal Protection Engineering of North Carolina, Inc.
4038 Masonboro Loop Road
Wilmington NC 28409
Office: 910-399-1905
Project Name: Ocean Isle Beach Terminal Groin
Sample Name: OIB SS 011
AnalAnalysis Date: 2022-03-17
Y
Analyzed By: Ryan Watson
Easting (ft):
2,184,849
Northing (ft):
54,326
Coordinate System:
North Carolina State Plane
Elevation (ft):
USCS:
SW
Munsell: Wet - 2.5Y-5/1
Dry - 2.5Y-6/1
Washed - 2.5Y-7/1
Comments:
N/A
Dry Weight (g):
201.47
Wash Weight (g):
200.68
Pan Retained (g):
0.00
Sieve Loss (%):
0.00
Fines /):
#20 - 0.42
#230 - 0.39
Organics (%:
N/A
Carbonates (%:
6.00
Shells (%):
N/A
Sieve Number
Sieve Size
(Phi)
Sieve Size
(Millimeters)
Grams
Retained
% Weight
Retained
Cum. Grams
Retained
C. % Weight
Retained
3/4"
-4.25
19.03
0.00
0.00
0.00
0.00
5/8"
-4.00
16.00
1.30
0.65
1.30
0.65
11/16"
-3.50
11.31
0.93
0.46
2.23
1.11
5/16"
-3.00
8.00
0.74
0.37
2.97
1.47
3.5
-2.50
5.66
1.52
0.75
4.49
2.23
4
-2.25
4.76
0.39
0.19
4.88
2.42
5
-2.00
4.00
0.67
0.33
5.55
2.75
7
-1.50
2.83
1.52
0.75
7.07
3.51
10
-1.00
2.00
1.96
0.97
9.03
4.48
14
-0.50
1.41
3.13
1.55
12.16
6.04
18
0.00
1.00
4.50
2.23
16.66
8.27
25
0.50
0.71
10.95
5.44
27.61
13.70
35
1.00
0.50
20.96
10.40
48.57
24.11
45
1.50
0.35
32.46
16.11
81.03
40.22
60
2.00
0.25
46.51
23.09
127.54
63.30
80
2.50
0.18
48.43
24.04
175.97
87.34
120
3.00
0.13
21.91
10.88
197.88
98.22
170
3.50
0.09
2.56
1.27
200.44
99.49
200
3.75
0.07
0.18
0.09
200.62
99.58
230
4.00
0.06
0.06
0.03
200.68
99.61
Phi 5
Phi 16
Phi 25
Phi 50
Phi 75
Phi 84
Phi 95
2.85
2.43
2.24
1.71
1.03
0.61
-0.83
Moment
Mean Phi
Mean mm
Sorting
Skewness
Kurtosis
Statistics
1.46
0.36
1.2
-1.96
8.35

APPENDIX 2
OCEAN ISLE BEACH TERMINAL GROIN SEDIMENT GRAIN SIZE DISTRIBUTION
CURVES/HISTOGRAMS

PHI Sieve Sizes -4.25 -4 -3 -2.25 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 3.75 4
Standard Sieve Sizes 3/45/8 5/16 4 5 7 10 14 18 25 35 45 60 80 120 170 200 230 Hydrometer
100
0
90
10
80
20
70
30
CID m
rn
m 60
40 �
T
T
m
50
50 n
W
o
CID
40
60
a�
IL
30
-
70
20
80
10
------
--
90
0
—
100
100
5 10 5 1 5 0.1 5 0.01 5 0.001
Millimeters
Sample
Symbol
Elev. (ft)
USCS
% Fines
% Organics
% Carbonates
Median
Mean
Skew
Kurt
Sort
Sample Information
OIB SS 009
SP
#200 - 0.73
#230 - 0.69
N/A
6.00
1.92
1.82
1.41
7.47
0.75
Pro ect Name:
Ocean Isle Beach Terminal Groin
Comments: N/A
Analysis Date:
2022-03-17
Depths and elevations based on measured values
Analyzed By:
Ryan Watson
Easting (X, ft):
2,184,776
Coastal Protection Engineering of North Carolina, Inc.
4038 Masonboro Loop Road
Northing (Y, ft):
54,546
Horizontal System:
NAD 1983
COASTAL
PROTECTION
Wilmington NC 28409
Office: 910-399-1905
Vertical System:
NAVD 88
ENGINEERING
Gravel
Sand
Silt and Clay
Coarse
Fine
Coarse
Medium
Fine

PHI Sieve Sizes -4.25 -4 -3 -2.25 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 3.75 4
Standard Sieve Sizes 3/45/8 5/16 4 5 7 10 14 18 25 35 45 60 80 120 170200230 Hydrometer
100
0
90
10
80
20
70
30
CID m
rn
m 60
40 �
T
T
m
50
50 2
W
o
CID
40
60
a�
IL
30
70
20
80
10
90
0
—
100
100
5 10 5 1 5 0.1 5 0.01 5 0.001
Millimeters
Sample
Symbol
Elev. (ft)
USCS
% Fines
% Organics
% Carbonates
Median
Mean
Skew
Kurt
Sort
Sample Information
OIB SS 010
SP
#230 - 0.67 #200 - 0.70
N/A
5.00
1.88
1.77
1.44
7.26
0.81
Project Name:
Ocean Isle Beach Terminal Groin
Comments: N/A
Analysis Date:
2022-03-17
Depths and elevations based on measured values
Analyzed By:
Ryan Watson
Easting (X, ft):
2,184,829
Coastal Protection Engineering of North Carolina, Inc.
4038 Masonboro Loop Road
Northing (Y, ft):
54,367
Horizontal System:
NAD 1983
COASTAL
PROTECTION
Wilmington NC 28409
Office: 910-399-1905
Vertical System:
NAVD 88
ENGINEERING
Gravel
Sand
Silt and Clay
Coarse
Fine
Coarse
Medium
Fine

PHI Sieve Sizes -4.25 -4 -3 -2.25 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 3.75 4
Standard Sieve Sizes 3/45/8 5/16 4 5 7 10 14 18 25 35 45 60 80 120 170 200 230 Hydrometer
100
0
90
10
80
20
70
30
CID m
rn
m 60
40 �
T
T
m
50
50 2
W
o
CID
40
60
a�
IL
30
70
20
80
10
--
90
0
—
—
100
100
5 10 5 1 5 0.1 5 0.01 5 0.001
Millimeters
Gravel
Sand
Silt and Clay
Coarse
Fine
Coarse
Medium
Fine