HomeMy WebLinkAbout20080868 Ver 2_Appendix F - Metals_20190628APPENDIX F
2018 Sediment and Water Column Metals
(CD/DVD only)
Notes:
Table F-1. Minimum and maximum 2018 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 (Ng/g)
Cr (Ng/g)
Cu (Ng/g)
Fe (%)
Se (Ng/g)
Zn (Ng/g)
Min Max
Min
Max
Min
Max
Min
Max
Min Max
Min Max
Min
I Max
Range
Creek
0.06 2.90
HC DW
2.70
JK
6.90
LI*
1.20
HC
36.8
DW
4.70
LO*
15.20
DK*
0.05 2.81
HC DW
1.30 4.20
JK DW
3.20
HC
87.50
JIB
HC = Huddles Cut DW = Drinkwater JK = Jacks LI* = Little LO* = Long DK* = Duck JB =Jacobs
Table F-2. Values of sediment metals detected in 2018 in the PCS creeks study. Creeks are listed with most
upstream creek on South Creek first (Jacks 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 an less than symbol (<) indicates the reporting limit for undetected metals in a creek sample.
o
Al (/a)
Ag
(Ng/g)
As
(Ng/g)
Cd
(Ng/g)
Cr
(Ng/g)
Cu
(Ng/g)
o
Fe (/�)
MO
(Ng/g)
Se
(Ng/g)
Zn
(Ng/g)
Creek
Jacks
0.75
<1.0
2.70
<1.0
10.20
5.40
0.83
<4.8
1.30
33.20
Little*
2.62
<1.9
6.90
<1.9
34.00
12.90
2.21
<9.1
3.40
83.50
Jacobs
2.66
<1.8
6.60
<1.8
34.40
12.70
2.75
<8.4
4.00
87.50
PA2*
2.81
<1.9
5.60
<1.9
33.60
11.30
2.29
<8.9
3.40
85.10
Drinkwater
2.90
<2.0
6.80
<2.0
36.80
13.20
2.81
<8.8
4.20
86.40
Long*
0.87
<0.83
2.80
<0.83
12.30
4.70
0.90
<4.6
1.40
33.30
Tooley
2.14
<1.4
6.00
<1.4
28.10
9.00
2.23
<6.1
2.90
71.10
Muddy*
2.26
<1.2
4.80
<1.2
25.80
10.50
1.85
<26
2.30
85.10
Huddles Cut
0.06
<0.56
<0.56
<0.56
1.20
<0.56
0.05
<2.1
<0.56
3.20
Porter
2.44
<1.2
5.60
<1.2
30.50
10.10
2.50
<31
2.70
57.20
DCUT11
1.84
<2.9
5.70
<2.9
18.50
10.80
2.02
<16
3.60
73.10
DCUT19*
1.22
<1.8
6.10
<1.8
16.70
9.50
1.98
<9.8
2.80
52.50
Duck*
1.80
<1.5
4.80
<1.5
20.00
15.20
2.46
<37
3.00
72.50
All mean
Control* mean
Other mean
1.87
1.93
1.83
NA
NA
1 NA
5.37
5.17
1 5.57
NA
NA
1 NA
23.24
23.73
22.81
10.44
10.68
10.20
1.91
1.95
1.88
NA
NA
NA
2.92
2.72
I 3.ILJ
63.36
68.67
58.81
F-1
Table F-3. Values for physical parameters of 2018 sediment samples from PCS study creeks. Control creeks are indicated with an
asterisk (*).
Creek
Bulk density
a
(g/cm)
Water content
o
(/o by weight)
Water content
o
(/o by Volume)
Dry sediment
a
density (g/cm)
% Soil -solid
as dry weight
Porosity
Total organic
carbon (g/kg)
Jacks Creek
0.65
53.94
76.00
0.007
45.40
0.76
31.40
Little Creek*
0.34
71.91
87.00
0.003
25.20
0.87
58.70
Jacobs Creek
0.30
74.46
88.00
0.003
25.50
0.89
63.80
PA2*
0.30
74.83
90.00
0.003
25.40
0.89
45.70
Drinkwater Creek
0.29
75.32
90.00
0.003
24.00
0.89
55.80
Long Creek*
0.74
49.33
73.00
0.007
50.80
0.72
22.80
Tooley Creek
0.43
65.77
83.00
0.004
34.00
0.84
40.00
Muddy Creek*
0.54
59.68
80.00
0.005
38.90
0.80
22.80
Huddles Cut
1.41
17.49
30.00
0.014
82.40
0.47
1.82
Porter Creek
0.46
64.31
84.00
0.005
35.50
0.83
33.30
DCUT11
0.18
83.81
93.00
0.002
14.70
0.90
138.00
DCUT19*
0.27
76.47
88.00
0.012
23.30
0.93
130.00
Duck Creek*
0.36
70.54
87.00
0.004
28.40
0.86
52.00
Mean all (SD)
0.48 (0.32)
64.45 (17.09)
80.69 (16.28)
0.006 (0.004)
34.88 (17.35)
0.82 (0.12)
53.55 (39.61)
Mean control (SD)
0.42 (0.18)
67.13 (10.52)
84.17 (6.43)
0.006 (0.003)
32.50 (9.92)
0.85 (0.07)
55.33 (39.52
Mean other (SD)
0.53 (0.42)
62.16 (21.88)
77.71 (21.75)
0.005 (0.004)
37.67 (24.23)
0.80 (0.15)
52.02 (42.79)
Table F-4. Values of total recoverable metals in the 2018 PCS creek study water samples. Seven values were detected in 2018. Values with less than symbol (<)
were not detected at the reporting limit shown.
Recoverable
metals 2018
water column
Creek
Ag (Ng/L)
As (Ng/L)
Cd (Ng/L)
Cr (Ng/L)
Cu (Ng/L)
Fe (Ng/L)
Mo (Ng/L)
Se (Ng/L)
Zn (Ng/L)
Jacks Creek
<2.0
2.0
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
Little Creek*
<2.0
2.1
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
Jacobs Creek
<2.0
2.0
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
PA2*
<2.0
2.1
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
Drinkwater Creek
<2.0
<2.0
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
Long Creek*
<2.0
2.1
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
Tooley Creek
<2.0
<2.0
<2.0
<2.0
<2.0'
<200
<250
<2.0
<100
Muddy Creek*
<2.0
<2.0
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
Huddles Cut
<2.0
<2.0
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
Porter Creek
<2.0
<2.0
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
DCUT11
<2.0
<2.0
<2.0
<2.0
<2.0
320
<250
<2.0
<100
DCUT19*
<2.0
<2.0
<2.0
<2.0
<2.0
210
<250
<2.0
<100
Duck Creek*
<2.0
<2.0
<2.0
<2.0
<2.0
<200
<250
<2.0
<100
Analyte was detected at 12.6 in first lab analysis; seemed anomalous, lab performed second analysis on sample with <2.0 result
F - 2