Table 3. Arsenic content (parts per million) means, ranges, and standard deviations for samples from coal beds/zones included in the assessment of Northern and Central Appalachian Basin coal regions on an as-received or remnant moisture, whole-coal basis, by county and coal bed/zone for the State of Kentucky.

County

Coal Bed/Zone

Mean

Minimum

Maximum

Standard
Deviation

No. of
Samples

Bell

Stockton and Coalburg

19

2.0

47

16

6

Bell

Winifrede/Hazard

18

2.5

52

23

4

Bell

Fire Clay

29

5.1

53

23

5

Bell

Williamson/Amburgy

5.6

1.9

11

3.7

5

Bell

Campbell Creek/Upper Elkhorn No. 3

34

7.6

65

29

3

Bell

Upper Elkhorn Nos. 1 and 2/Powellton

32

1.4

96

41

5

Bell

Pond Creek

5.4

3.5

8.4

2.7

3

Boyd

No. 5 Block

11

8.9

13

2.9

2

Breathitt

No. 5 Block

4.9

0.90

16

5.3

11

Breathitt

Stockton and Coalburg

6.3

1.5

18

5.3

11

Breathitt

Winifrede/Hazard

8.2

1.2

17

7.6

4

Breathitt

Williamson/Amburgy

nd

28

28

nd

1

Breathitt

Upper Elkhorn Nos. 1 and 2/Powellton

21

15

27

6.0

3

Carter

No. 5 Block

nd

9.0

9.0

nd

1

Carter

Stockton and Coalburg

8.8

3.5

14

7.4

2

Carter

Campbell Creek/Upper Elkhorn No. 3

19

3.3

35

22

2

Clay

Winifrede/Hazard

19

1.7

58

23

8

Clay

Fire Clay

nd

8.0

8.0

nd

1

Clay

Williamson/Amburgy

43

37

48

7.8

2

Clay

Campbell Creek/Upper Elkhorn No. 3

46

20

83

33

3

Clay

Upper Elkhorn Nos. 1 and 2/Powellton

61

3.6

230

93

9

Elliott

Stockton and Coalburg

17

2.9

46

20

4

Elliott

Campbell Creek/Upper Elkhorn No. 3

2.4

1.7

3.0

0.92

2

Floyd

No. 5 Block

nd

2.5

2.5

nd

1

Floyd

Stockton and Coalburg

8.0

0.60

28

11

5

Floyd

Fire Clay

10

1.3

22

9.6

5

Floyd

Williamson/Amburgy

nd

29

29

nd

1

Floyd

Campbell Creek/Upper Elkhorn No. 3

6.9

1.5

10

3.1

8

Floyd

Upper Elkhorn Nos. 1 and 2/Powellton

25

6.4

60

20

9

Greenup

No. 5 Block

nd

7.1

7.1

nd

1

Greenup

Stockton and Coalburg

21

2.3

54

24

4

Harlan

Stockton and Coalburg

36

5.8

79

28

6

Harlan

Winifrede/Hazard

12

4.4

27

13

3

Harlan

Williamson/Amburgy

87

73

100

19

2

Harlan

Campbell Creek/Upper Elkhorn No. 3

36

1.6

77

31

7

Harlan

Upper Elkhorn Nos. 1 and 2/Powellton

9.5

1.6

20

8.6

4

Harlan

Pond Creek

8.7

2.0

15

9.5

2

Jackson

Upper Elkhorn Nos. 1 and 2/Powellton

60

20

100

57

2

Johnson

No. 5 Block

nd

4.4

4.4

nd

1

Johnson

Stockton and Coalburg

22

1.7

77

32

5

Johnson

Winifrede/Hazard

nd

6.5

6.5

nd

1

Johnson

Fire Clay

nd

37

37

nd

1

Johnson

Williamson/Amburgy

21

0.61

49

23

4

Johnson

Campbell Creek/Upper Elkhorn No. 3

11

1.1

32

14

5

Knott

No. 5 Block

nd

1.0

1.0

nd

1

Knott

Stockton and Coalburg

17

1.7

50

17

7

Knott

Winifrede/Hazard

3.0

0.40

6.5

2.6

4

Knott

Fire Clay

6.4

1.3

17

7.2

4

Knott

Williamson/Amburgy

nd

66

66

nd

1

Knott

Campbell Creek/Upper Elkhorn No. 3

nd

7.8

7.8

nd

1

Knott

Upper Elkhorn Nos. 1 and 2/Powellton

nd

13

13

nd

1

Knox

Stockton and Coalburg

nd

16

16

nd

1

Knox

Fire Clay

nd

1.0

1.0

nd

1

Knox

Upper Elkhorn Nos. 1 and 2/Powellton

17

2.7

48

15

7

Knox

Pond Creek

27

1.3

74

28

10

Laurel

Upper Elkhorn Nos. 1 and 2/Powellton

130

25

280

110

5

Lawrence

No. 5 Block

28

2.5

70

24

9

Lawrence

Stockton and Coalburg

6.9

1.0

35

8.6

15

Lawrence

Winifrede/Hazard

4.1

3.1

5.0

1.3

2

Lawrence

Fire Clay

14

12

15

2.1

2

Lawrence

Williamson/Amburgy

nd

2.0

2.0

nd

1

Lawrence

Campbell Creek/Upper Elkhorn No. 3

23

2.2

43

29

2

Leslie

No. 5 Block

9.2

0.75

25

9.6

6

Leslie

Stockton and Coalburg

15

0.60

37

12

12

Leslie

Winifrede/Hazard

10

1.6

36

10

13

Leslie

Fire Clay

4.8

3.8

5.6

0.87

4

Letcher

Winifrede/Hazard

12

4.5

27

10

4

Letcher

Fire Clay

8.2

1.3

20

7.1

5

Letcher

Williamson/Amburgy

nd

2.1

2.1

nd

1

Letcher

Campbell Creek/Upper Elkhorn No. 3

24

16

31

11

2

Letcher

Upper Elkhorn Nos. 1 and 2/Powellton

nd

11

11

nd

1

Letcher

Pond Creek

nd

14

14

nd

1

Magoffin

No. 5 Block

3.4

2.2

4.6

1.7

2

Magoffin

Stockton and Coalburg

8.1

1.0

26

8.3

11

Magoffin

Winifrede/Hazard

13

4.8

22

12

2

Martin

No. 5 Block

17

1.5

45

18

7

Martin

Stockton and Coalburg

11

0.60

43

12

22

Martin

Winifrede/Hazard

nd

5.3

5.3

nd

1

Martin

Pond Creek

9.1

2.6

18

8.1

3

Morgan

Stockton and Coalburg

22

5.1

49

20

5

Morgan

Winifrede/Hazard

11

1.5

19

8.8

3

Morgan

Williamson/Amburgy

32

16

57

22

3

Morgan

Campbell Creek/Upper Elkhorn No. 3

19

2.6

39

17

5

Morgan

Upper Elkhorn Nos. 1 and 2/Powellton

66

33

99

47

2

Owsley

Winifrede/Hazard

nd

11

11

nd

1

Owsley

Williamson/Amburgy

nd

27

27

nd

1

Owsley

Campbell Creek/Upper Elkhorn No. 3

43

40

46

4.2

2

Owsley

Upper Elkhorn Nos. 1 and 2/Powellton

22

11

44

19

3

Perry

Stockton and Coalburg

11

0.80

69

14

24

Perry

Winifrede/Hazard

6.4

1.2

20

6.9

9

Perry

Fire Clay

1.3

0.70

1.9

0.85

2

Perry

Williamson/Amburgy

12

1.7

23

15

2

Perry

Campbell Creek/Upper Elkhorn No. 3

nd

11

11

nd

1

Perry

Upper Elkhorn Nos. 1 and 2/Powellton

27

9.6

45

25

2

Pike

No. 5 Block

nd

2.3

2.3

nd

1

Pike

Stockton and Coalburg

9.7

1.4

29

9.8

12

Pike

Fire Clay

2.8

2.1

3.9

0.95

3

Pike

Williamson/Amburgy

30

1.8

120

39

8

Pike

Campbell Creek/Upper Elkhorn No. 3

7.6

1.5

23

7.8

10

Pike

Upper Elkhorn Nos. 1 and 2/Powellton

9.0

0.90

52

14

17

Pike

Pond Creek

8.2

0.64

43

15

12

Whitley

Upper Elkhorn Nos. 1 and 2/Powellton

28

2.8

83

37

4

Whitley

Pond Creek

18

1.7

40

17

5

Wolfe

Fire Clay

nd

34

34

nd

1

Wolfe

Williamson/Amburgy

nd

87

87

nd

1

Wolfe

Campbell Creek/Upper Elkhorn No. 3

nd

79

79

nd

1

Wolfe

Upper Elkhorn Nos. 1 and 2/Powellton

23

11

34

16

2