PERMFILE112522

• Permit No: C1982057A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: TAB 6 GEOLOGY AND OVERBURDEN ASSESSMENT
• Media Type: D
• Archive: Yes

TABLE 6-5A
Weighted Average Physiochemical Characteristics of the
Underburden from the Southern Mine Block, Seneca IIW Mine
Site Location "'
Parameter "' 217C 286C 3080C 3152C
Underburden Thickness, feet 5.4 5.0 10.0 10.5 --
pH, Paste 6.8 7.3 7.2 7.0 7.1
Saturation Percent, % 44.4 46.5 27.9 37.1 39.0
Conductivity, mmho/cm 4.1 1.9 2.4 0.9 2.3
Sodium, meq/I 2.7 2.0 3.9 1.3 2.5
Calcium, meq/I 32.3 11.0 16.5 4.1 16.0
Magnesium, meq/I 30.2 11.1 12.2 2.6 14.1
Sodium Adsorption flatio 0.5 0.6 1.1 0.7 0.7
Sand, % 30.0 23.0 48.6 55.2 39.2
Silt, % 46.0 45.0 37.6 26.1 39.2
Clay, % 24.0 32.0 13.6 16.7 21.6
Very Fine Sand, % 25.0 15.0 NA NA 20.0
Total Sulfur, %'~' 0.42 0.16 0.15 0.32 0.26
P.cid Potential '^ 13.1 5.0 4.% 70.0 6.2
Neutralization Potential '~' 43.1 42.6 75.5 27.1 47.1
Acid-Base Potential "' 30.0 37.6 70.8 17.1 36.9
Aluminum, ppm NA NA NA 151 151
Ammonium-Nitrogen, ppm NA NA 2.3 9.1 5.7
Arsenic, pDm NA NA NA (51 151
Boron, ppm '~' 0.9 0.9 NA 1.4 1.1
Cadmium, pPm~ NA NA NA 0.06 0.06
Chloride, ppm NA NA NA 9.3 9.3
Chromium, ppm NA NA NA 151 151
Copper, ppm '~' 1 3.7 16.6 NA 1 .0 11 .1
Fluoride, ppm NA NA NA 0.5 0.5
Iron, ppm NA NA 31.9 17.5 24.7
Lead, ppm NA NA 1.5 2.3 1.9
Manganese, ppm '~' NA NA 5.2 3.3 4.3
Mercury, ppm NA NA 151 151 151
Molybdenum, ppm'" NA NA NA 0.09 0.09
Nickel, ppm' NA NA NA 2.4 2.4
Nitrate-Nitrogen, ppm NA NA 0.9 1.0 1.0
Selenium, ppm NA NA NA 0.12 0.12
Zinc, ppm'" NA NA 5.3 5.4 5.4
"' For drill hole location, see Exhibit 6-4A
'~' The following abbreviations are used: % =percent; mmho/cm = millimhos per centimeter; meq/I milliequivalents per liter; ppm =parts
per million; and NA no analysis.
"' Values were adjusted for less than values according to Hilton (19841
"' Unit is tons calcium carbonate equivalent per 1000 tons of underburden.
'r' All mean values were less than the detection limit of 0.20 ppm for aluminum, 0.05 ppm for arsenic, 0.01 ppm for chromium, 0.20 ppm for
mercury, 0.6 ppm for molybdenum, and 0.01 ppm for selenium.
• ~ Revised 9/9•