Table 1. 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 State and coal bed/zone. [nd, no data; no., number.]
State | Coal Bed/Zone | Mean | Minimum | Maximum | Standard Deviation | No. of Samples
ALL | Pittsburgh | 12 | 0.33 | 61 | 13 | 140
ALL | Upper Freeport | 34 | 0.72 | 130 | 25 | 250
ALL | Lower Kittanning | 19 | 0.13 | 130 | 20 | 190
ALL | No. 5 Block | 11 | 0.75 | 70 | 14 | 88
ALL | Stockton and Coalburg | 11 | 0.40 | 79 | 14 | 193
ALL | Winifrede/Hazard | 8.7 | 0.40 | 58 | 11 | 81
ALL | Fire Clay | 11 | 0.70 | 53 | 13 | 39
ALL | Williamson/Amburgy | 28 | 0.61 | 120 | 30 | 37
ALL | Campbell Creek/Upper Elkhorn No. 3 | 14 | 0.85 | 85 | 19 | 136
ALL | Upper Elkhorn Nos. 1 and 2/Powellton | 27 | 0.80 | 280 | 47 | 104
ALL | Pond Creek | 9.9 | 0.075 | 74 | 14 | 88
ALL | Pocahontas No. 3 | 7.1 | 0.30 | 35 | 8.1 | 33
KY | No. 5 Block | 12 | 0.75 | 70 | 16 | 43
KY | Stockton and Coalburg | 13 | 0.60 | 79 | 15 | 151
KY | Winifrede/Hazard | 10 | 0.40 | 58 | 13 | 61
KY | Fire Clay | 12 | 0.70 | 53 | 14 | 33
KY | Williamson/Amburgy | 29 | 0.61 | 120 | 31 | 33
KY | Campbell Creek/Upper Elkhorn No. 3 | 21 | 1.1 | 83 | 22 | 55
KY | Upper Elkhorn Nos. 1 and 2/Powellton | 33 | 0.90 | 280 | 53 | 76
KY | Pond Creek | 15 | 0.64 | 74 | 19 | 36
MD | Pittsburgh | nd | 2.7 | 2.7 | nd | 1
MD | Upper Freeport | 32 | 4.3 | 90 | 24 | 13
MD | Lower Kittanning | 16 | 15 | 16 | 0.66 | 2
OH | Pittsburgh | 13 | 0.45 | 51 | 11 | 56
OH | Upper Freeport | 44 | 3.9 | 120 | 29 | 46
OH | Lower Kittanning | 22 | 2.9 | 130 | 21 | 93
PA | Pittsburgh | 9.4 | 0.33 | 61 | 13 | 36
PA | Upper Freeport | 33 | 0.73 | 130 | 23 | 180
PA | Lower Kittanning | 16 | 0.14 | 90 | 19 | 88
VA | Stockton and Coalburg | nd | 2.6 | 2.6 | nd | 1
VA | Winifrede/Hazard | 2.8 | 2.4 | 3.0 | 0.35 | 3
VA | Fire Clay | nd | 10 | 10 | nd | 1
VA | Williamson/Amburgy | 11 | 0.90 | 31 | 17 | 3
VA | Campbell Creek/Upper Elkhorn No. 3 | 15 | 1.7 | 85 | 23 | 13
VA | Upper Elkhorn Nos. 1 and 2/Powellton | 11 | 1.7 | 23 | 9.5 | 6
VA | Pond Creek | 5.5 | 0.89 | 21 | 6.1 | 10
VA | Pocahontas No. 3 | 8.9 | 2.7 | 29 | 7.7 | 11
WV | Pittsburgh | 13 | 0.33 | 58 | 14 | 47
WV | Upper Freeport | 16 | 0.72 | 41 | 14 | 11
WV | Lower Kittanning | 5.6 | 0.13 | 19 | 7.9 | 10
WV | No. 5 Block | 9.0 | 0.80 | 49 | 11 | 45
WV | Stockton and Coalburg | 4.3 | 0.40 | 38 | 6.4 | 41
WV | Winifrede/Hazard | 3.7 | 0.50 | 10 | 2.8 | 17
WV | Fire Clay | 3.7 | 1.7 | 7.6 | 2.5 | 5
WV | Williamson/Amburgy | nd | 20 | 20 | nd | 1
WV | Campbell Creek/Upper Elkhorn No. 3 | 8.4 | 0.85 | 75 | 12 | 68
WV | Upper Elkhorn Nos. 1 and 2/Powellton | 12 | 0.80 | 70 | 18 | 22
WV | Pond Creek | 6.9 | 0.075 | 31 | 7.5 | 42
WV | Pocahontas No. 3 | 6.2 | 0.30 | 35 | 8.3 | 22

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