Table 5. 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 whole-coal basis, by county and coal bed/zone for the State of Ohio. [nd, no data; no., number.]
County | Coal Bed/Zone | Mean | Minimum | Maximum | Standard Deviation | No. of Samples
Belmont | Pittsburgh | 9.7 | 0.58 | 51 | 12 | 20
Belmont | Upper Freeport | 49 | 36 | 78 | 19 | 4
Belmont | Lower Kittanning | 17 | 5.6 | 46 | 14 | 9
Carroll | Lower Kittanning | nd | 8.2 | 8.2 | nd | 1
Columbiana | Upper Freeport | 68 | 26 | 120 | 32 | 10
Columbiana | Lower Kittanning | 64 | 57 | 72 | 11 | 2
Coshocton | Lower Kittanning | 15 | 3.5 | 50 | 12 | 14
Gallia | Pittsburgh | 19 | 9.9 | 31 | 9.5 | 4
Gallia | Lower Kittanning | 75 | 19 | 130 | 80 | 2
Guernsey | Pittsburgh | 11 | 7.3 | 14 | 3.6 | 3
Guernsey | Upper Freeport | 36 | 3.9 | 110 | 31 | 8
Guernsey | Lower Kittanning | 18 | 4.2 | 33 | 12 | 6
Harrison | Pittsburgh | 14 | 0.45 | 37 | 12 | 10
Harrison | Upper Freeport | 34 | 33 | 35 | 1.4 | 2
Hocking | Upper Freeport | 25 | 9.2 | 41 | 23 | 2
Hocking | Lower Kittanning | 38 | 32 | 46 | 7.4 | 3
Holmes | Lower Kittanning | 15 | 9.6 | 24 | 6.4 | 4
Jackson | Lower Kittanning | 32 | 5.1 | 62 | 20 | 5
Jefferson | Pittsburgh | 18 | 0.47 | 44 | 15 | 8
Jefferson | Upper Freeport | nd | 56 | 56 | nd | 1
Lawrence | Lower Kittanning | 23 | 7.8 | 33 | 11 | 4
Mahoning | Lower Kittanning | 34 | 2.9 | 76 | 38 | 3
Monroe | Pittsburgh | 10 | 4.0 | 25 | 7.9 | 8
Monroe | Upper Freeport | 43 | 10 | 81 | 29 | 4
Monroe | Lower Kittanning | 19 | 6.6 | 29 | 11 | 3
Muskingum | Pittsburgh | 19 | 12 | 31 | 11 | 3
Muskingum | Upper Freeport | 17 | 9.0 | 28 | 10 | 3
Muskingum | Lower Kittanning | nd | 8.2 | 8.2 | nd | 1
Noble | Upper Freeport | 54 | 11 | 90 | 29 | 6
Noble | Lower Kittanning | 9.9 | 3.5 | 28 | 9.5 | 7
Perry | Upper Freeport | 20 | 8.8 | 30 | 11 | 3
Perry | Lower Kittanning | 23 | 12 | 34 | 8.9 | 4
Scioto | Lower Kittanning | 23 | 11 | 35 | 17 | 2
Stark | Upper Freeport | nd | 32 | 32 | nd | 1
Stark | Lower Kittanning | 36 | 7.3 | 92 | 39 | 4
Tuscarawas | Upper Freeport | 23 | 13 | 33 | 14 | 2
Tuscarawas | Lower Kittanning | 15 | 6.4 | 35 | 8.1 | 11
Vinton | Lower Kittanning | 23 | 3.9 | 47 | 16 | 7
Washington | Lower Kittanning | nd | 56 | 56 | nd | 1

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