REP51222

• Permit No: C1981008
• IBM Index Class Name: Report
• Doc Date: 12/11/2001
• Doc Name: TABLE OF CONTENTS
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

' GROUND WATER QUALITY PARAMETERS
' SITE GW-N20
FORMATION DAKOTA COAL
DATE OF COLLECTION

FIELD PARAMETERS
08/01/95 05/22/95 02/17/95 11/08/94
Conductivity (UMHOS/CM) 1980 1990 1790 1880
' pH 6.1 6.3 6 6.2
Water Temperature (DEG C)
' LABORATORY PARAMETERS
ACIDITY, DISS. (mg/I OF CACO3) 6 24 10
' ALKALINITY, DISS. (mg/I OF CACO3) 36 53 67
ALUMINUM, DISS. (mg/I) 0.11 0.75 0.29 0.2
ARSENIC, DISS. (mg/I)
BARIUM, DISS. (mg/I) 0.012 0.013 0.011 0.012
' BERYLLIUM, DISS. (mg/I) 0.007 0.009 0.007 0.007
BICARBONATE, DISS. (mg/I) 50 36 53 67
BORON, DISS. (mgll) 0.36 0.4 0.37 0.4
' CADMIUM, DISS. (mg/I)
CALCIUM, DISS. (mg/1) 292 296 258 280
CARBONATE, DISS. (mg/I)
' CATION/ANION BALANCE (%) -3.3 6.6 -2.9
CHLORIDE, DISS. (mg/I) 49 2 5 7
COBALT, DISS. (mg/I) 0.05 0.05 0.04 0.05
' CONDUCTIVITY @ 25 DEG C (UMHOSlCM) 1980 1990 1790 1880
COPPER, DISS. (mg/I)
FLUORIDE, DISS. (mg/I) 0.9 1 0.6 0.8
HARDNESS AS CACO3 (mgll) 1110 1140 965
' IRON, DISS. (mgA) 33.2 36.4 31.3 31
IRON, TOTAL (mg/I) 36.7 35.5 36.5 35
LITHIUM, DISS. (mg/l) 0.47 0.9 0.49 0.48
' LEAD, REC. (mg/I)
MAGNESIUM, DISS. (mg/I) 91.7 97.5 77.8 85
MANGANESE, DISS. (mg/l) 1.7 1.86 1.63 1.7
1 MANGANESE, TOTAL (mg/I) 1.71 1.8 1.81 1.7
MERCURY, REC. (mg/I)
MOLYBDENUM, DISS. (mgA) 0.001
NICKEL, REC. (mg/I) 0.06 0.06 0.05 0.05
' NITROGEN, AMMONIA, DISS. (mg/I) 1.81 1.81 1.78 1.8
NITROGEN, NITRATE, DISS. (mgA) 0.1 0.08
NITROGEN, NITRITE, DISS. (mg/I) 0.1 0.03
' PH@25DEGC 6.1 6.3 6 6.2
PHOSPHATE AS PO4, DISS. (mg/I) 0.34 0.1
POTASSIUM, DISS. (mg/I) 9.2 10.6 9.3 10
' SELENIUM, REC. (mgfl) 0.001 0.001
SODIUM, DISS. (mg/I) 31.2 34.4 29.6 33
SODIUM ADSORPTION RATIO 0.41 0.44 0.42
SULFATE, DISS. (mg/I) 1200 1100 1100 1090
SULFIDE ASS (mg/I)
TOTAL DISSOLVED SOLIDS @ 180 DEG (mg/I) 1.02 1.12 1560
TOTAL DISSOLVED SOLIDS, CALCULATED (mg/I) 1740 1600 1575.6
I TOTAL SUSPENDED SOLIDS (mg/I)
VANADIUM, DISS. (mg/I)
I ZINC, REC. (mg/I) 0.3 0.36 0.33 0.3