South River Water Column [Hg] Survey

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South River Water Column [Hg] Survey (Phase II)

Survey Area Water Quality

22

21.5

21

Hydrolab Temp Troll Temp

20.5

20

19.5

19 10:33:36

11:45:36

12:57:36

14:09:36

15:21:36

16:33:36

Survey Area Water Quality

8.4 8.2 8 7.8

Hydrolab pH Troll pH

7.6 7.4 7.2 7 10:33:36

11:45:36

12:57:36

14:09:36

15:21:36

16:33:36

Survey Area Water Quality

220

200

180

Hydrolab Cond Troll Cond

160

140

120

100 10:33:36

11:45:36

12:57:36

14:09:36

15:21:36

16:33:36

Hopeman Segment Anions 80

70

60

50 Alkalinity (R) mg/L

Chloride (R) Sulfate (R)

40

Alkalinity (L) Chloride (R) Sulfate (L)

30

20

10

0 1BSTH021.97

1BSTH022.03

1BSTH022.09 Station

1BSTH022.15

1BSTH022.21

Hopeman Segment Cations 30

25

20 Calcium (R) Magnesium (R) mg/L

Potasium (R) Sodium (R)

15

Calcium (L) Magnesium (L) Potasium (L) Sodium (L)

10

5

0 1BSTH021.97

1BSTH022.03

1BSTH022.09 Station

1BSTH022.15

1BSTH022.21

Hopeman Segment Total Hg 60

50

ng/L

40

Right

30

Left

20

10

0 1BSTH021.97

1BSTH022.03

1BSTH022.09 Station

1BSTH022.15

1BSTH022.21

DuPont Segment Sites

Station 1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

H0 25 .8 0

H0 25 .7 0

H0 25 .6 0

H0 25 .5 0

H0 25 .4 0

H0 25 .3 0

H0 25 .2 0

H0 25 .1 0

H0 25 .0 0

H0 24 .9 0

H0 24 .8 0

mg/L

DuPont Segment Anions

90

80

70

60

50 Alkalinity

Chloride

40 Sulfate

30

20

10

0

Station 1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

H0 25 .8 0

H0 25 .7 0

H0 25 .6 0

H0 25 .5 0

H0 25 .4 0

H0 25 .3 0

H0 25 .2 0

H0 25 .1 0

H0 25 .0 0

H0 24 .9 0

H0 24 .8 0

mg/L

DuPont Segment Cations

25

20

15 Calcium

Magnesium

Potassium

Sodium

10

5

0

Station 1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

1B ST

H0 25 .8 0

H0 25 .7 0

H0 25 .6 0

H0 25 .5 0

H0 25 .4 0

H0 25 .3 0

H0 25 .2 0

H0 25 .1 0

H0 25 .0 0

H0 24 .9 0

H0 24 .8 0

ng/L

DuPont Segment Total Hg

30

25

20

15 Total Hg

10

5

0

Future Water Sampling Efforts

• • • •

Confirm Spike Locations- bracket w/ closer intervals above and below Consider collection of replicate samples? Include Dissolved clean Hg samples with total Hg samples PIMS deployment?

1B

1B

1B

1B

1B

1B

1B

1B

1B

1B

1B

1B

1B

1B

1B

1B

1B

SS

SS

SS

SS

SS

SS

SS

00 2

00 7

01 4

01 9

02 2

02 3

02 4

02 4

02 5

02 6

.1 4

.8 0

.4 9

.2 6

.1 9

.7 3

.9 6

.9 7

.8 3

.7 3

F0 03 .5 0

F0 20 .7 0

F0 31 .3 8

F0 54 .2 0

F0 63 .1 7

F0 78 .2 0

F1 00 .1 0

ST H

ST H

ST H

ST H

ST H

ST H

ST H

ST H

ST H

ST H

[Hg] (ng/l)

5 Year Water Column results

Mean and 95% Confidence Dissolved Mercury

16

14

12

10

8

6

4

2

0