Appendix F - Metals

APPENDIX F
2019 Sediment and Water Column Metals
(CD/DVD only)

Table F-1. Minimum and maximum 2019 values for each detected metal and the creek sediment in which it was detected. Control creeks are
indicated with an asterisk (*). Neither silver (Ag), cadmium (Cd), nor molybdenum (Mo) was detected in any creek.
Metal
Al (%)
As (pg/g)
Cr (pg/g)
Cu (pg/g)
Fe (%)
Se (pg/g)
Zn (pg/g)
Min Max
Min Max
Min Max
Min Max
Min Max
Min Max
Min Max
Range
Creek
0.04 3.20
HC MD
3.20 8.10
PA D11
0.84 47
HC D19*
4.10 30.20
PA* MD*
0.03 22.9
HC BR
1.70 4.90
PA* DK*
2.10 85.50
HC JK
JK =
HC = Huddles Cut MD* = Muddy PA* = PA2 D11 = DC11 D19* = DC19 BR = Broomfield DK* = Duck Jacks
Table F-2. Values of sediment metals detected in 2019 in the PCS creeks study. Creeks are listed with most upstream
creek on South Creek first (Broomfield Swamp Creek) and proceed downstream by creek to Hickory Point and Muddy
Creek, then upriver along the Pamlico to the most western creeks. Control creeks are indicated with an asterisk (*) and
less than symbol (<) indicates the reporting limit for undetected metals in a creek sample.
Al (%)
(g g)
(g/g)
(g g)
(pg/g)
(g/g)
Fe (%)
(g/g)
(g/g)
(g/g)
Creek
Broomfield
2.29
<1.6
6.10
<1.6
28.6
13.70
22.9
<7.4
4.70
73.7
SCUT1*
0.98
<1.0
3.50
<1.0
11.9
6.00
9.21
<5.7
1.80
40.4
Jacks
2.41
<1.40
7.60
<1.40
31.50
14.10
2.58
<7.0
4.70
85.50
Little*
2.40
<1.7
5.50
<1.7
33.40
13.00
2.05
<5.5
3.30
70.50
Jacobs
2.76
<1.5
7.50
<1.5
37.40
15.10
2.83
<7.3
4.80
69.20
PA2*
0.77
<1.0
3.20
<1.0
12.50
4.10
0.90
<4.5
1.70
22.20
Drinkwater
2.69
<1.8
7.10
<1.8
36.40
13.70
2.74
<9.1
4.50
71.80
Long*
2.83
<1.6
6.60
<1.6
41.80
14.00
2.76
<9.5
4.30
73.20
Tooley
2.44
<1.5
7.10
<1.5
36.30
11.30
2.67
<8.0
3.90
67.20
Muddy*
3.20
<1.6
6.70
<1.6
43.70
30.20
2.56
<7.5
4.30
81.10
Huddles Cut
0.04
<0.41
<0.41
<0.41
0.84
<0.41
0.03
<2.1
<0.41
2.10
Porter
3.01
<1.3
7.40
<1.3
42.00
16.90
3.67
<7.4
4.80
65.10
DCUT11
1.69
<2.5
8.10
<2.5
19.00
12.50
2.59
<13
4.40
61.90
DCUT19*
1.03
<1.7
5.90
<1.7
47.00
10.90
1.72
<9.6
2.90
43.90
Duck*
2.37
<1.7
7.00
<1.7
31.70
23.60
3.60
<8.3
4.90
66.60
All mean
Control*
mean
2.06
1.94
NA
NA
6.38
5.49
NA
NA
30.27
31.71
14.22
14.54
4.19
3.26
NA
NA
4.04
3.57
59.63
56.84
Other mean 2.17 NA 7.27 NA 29.01 13.90 5.00 NA 4.52 62.06
F-1

Table F-3. Values for physical parameters of 2019 sediment samples from PCS study creeks. Control creeks are indicated
with an asterisk (*).
Creek
Bulk
density
(g/cm3)
Water
content
(% by
weight)
Water
content
(% by
Volume)
Dry sediment
densi 3y
(g/cm)
% Soil -solid
as dry
weight
Porosity
Total organic
carbon (g/kg)
Broomfield
Creek
0.38
69.19
85.00
0.004
30.81
0.86
45.30
SCUT1*
0.51
61.05
80.00
0.005
38.95
0.81
42.30
Jacks Creek
0.27
76.72
88.00
0.003
23.28
0.90
91.80
Little Creek*
0.36
69.89
84.00
0.004
30.11
0.86
55.70
Jacobs Creek
0.27
76.92
89.00
0.003
23.08
0.90
68.50
PA2*
0.95
39.89
64.00
0.010
60.11
0.64
17.20
Drinkwater
Creek
0.30
74.49
87.00
0.003
25.51
0.89
74.90
Long Creek*
0.31
73.69
87.00
0.003
26.31
0.88
52.20
Tooley Creek
0.35
71.37
88.00
0.004
28.63
0.87
46.70
Muddy Creek*
0.26
77.05
89.00
0.003
22.95
0.90
62.90
Huddles Cut
1.54
16.39
30.00
0.015
83.61
0.42
1.30
Porter Creek
0.32
73.34
87.00
0.003
26.66
0.88
57.10
DCUT11
0.20
82.24
91.00
0.002
17.76
0.93
125.00
DCUT19*
0.26
76.65
87.00
0.003
23.35
0.90
123.00
Duck Creek*
0.24
78.84
91.00
0.002
21.16
0.91
82.60
Mean all (SD) 0.43 (0.36) 67.85 (17.43) 81.80 (15.76) 0.004 (0.004) 32.15 (17.43) 0.84 (0.13) 63.10 (33.75)
Mean control
(SD) 0.41 (0.25) 68.15 (13.83) 83.14 (9.15) 0.004 (0.003) 31.20 (12.94) 0.84 (0.10) 62.27 (33.36)
Mean other
(SD) 0.45 (0.44) 67.58 (21.06) 80.63 (20.53) 0.005 (0.004) 33.24 (22.61) 0.83 (0.17) 63.83 (36.37)
F-2

Table F-4. Values of total recoverable metals in the 2019 PCS creek study water samples. Four values were detected in 2019. Values with less than
symbol (<) were not detected at the reporting limit shown.
Recoverable metals 2019 water column
Creek
Ag (pg/L)
As (pg/L)
Cd (pg/L)
Cr (pg/L)
Cu (pg/L)
Fe (pg/L)
Mo (pg/L)
(pg�L)
Zn (pg/L)
Broomfield
Creek
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
SCUT1*
<5.0
<5.0
<5.0
<5.0
<5.0
561.00
<250
<5.0
<100
Jacks Creek
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
Little Creek*
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
Jacobs Creek
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
PA2*
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
Drinkwater
Creek
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
Long Creek*
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
Tooley Creek
<5.0
<5.0
<5.0
<5.0
5.7
<500
<250
<5.0
<100
Muddy Creek*
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
Huddles Cut
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
Porter Creek
<5.0
<5.0
<5.0
<5.0
5.3
<500
<250
<5.0
<100
DCUT11
<5.0
<5.0
<5.0
<5.0
8.1
<500
<250
<5.0
<100
DCUT19*
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
Duck Creek*
<5.0
<5.0
<5.0
<5.0
<5.0
<500
<250
<5.0
<100
F-3