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-N17P1
FORMATION DAKOTA COAL
DATE OF COLLECTION 08/08/95 05/24/95 02/14/95 11/09/94
FIELD PARAMETERS

Conductivity (UMHOS/CM) 4040 3980 3940
' pH 7.5 7.5 7.65 7.7
Water Temperature (DEG C)
' LABORATORY PARAMETERS
ACIDITY, DISS. (mg/I OF CACO3)
ALKALINITY, DISS. (mgA OF CACO3) 560
ALUMINUM, DISS. (mg/l) 0.04
ARSENIC, DISS. (mg/I)
BARIUM, DISS. (mgA) 0.023 0.025 0.023 0.02
BERYLLIUM, DISS. (mg/I)
BICARBONATE, DISS. (mg/I) 412 523 560
BORON, DISS. (mgA)
CADMIUM, REC. (mg/I) 0.35 0.38 0.35 0.36
CALCIUM, DISS. (mgA) 91.1 91 92.4 110
CARBONATE, DISS. (mg/I) 412
1 CATION/ANION BALANCE (%) 1.7 1.5
CHLORIDE, DISS. (mgA) 29 28 27
COBALT, DISS. (mg/1)
' CONDUCTIVITY @ 25 DEG C (UMHOS/CM) 4040 3980 3940
COPPER, DISS. (mg/I)
FLUORIDE, DISS. (mgA) 0.5 0.6 0.5
HARDNESS AS CACO3 (mg/I) 480 475
IRON, DISS. (mg/I) 0.02 0.53 0.03 0.22
IRON, TOTAL (mg/I) 0.38 0.68 0.51 0.83
LITHIUM, DISS. (mg/I) 0.37 0.9 0.43 0.38
LEAD, DISS. (mg/I)
MAGNESIUM, DISS. (mg/I) 61.3 60.3' 60.4 70
MANGANESE, DISS. (mgA) 0.05 0.047 0.051 0.063
MANGANESE, TOTAL (mg/I) 0.03 0.044 0.054 0.064
MERCURY, REC. (mg/I)
MOLYBDENUM, REC. (mg/I) 0.002 0.002
NICKEL, REC. (mg/I)
NITROGEN, AMMONIA, DISS. (mg/I) 1.9 2.05 2.2
NITROGEN, NITRATE, DISS. (mg/I) 0.04 0.02
NITROGEN, NITRITE, DISS. (mgA)
' PH @ 25 DEG C 7.5 7.5 7.7
PHOSPHATE AS PO4, DISS. (mg/I)
POTASSIUM, DISS. (mg/1) 12.5 13.6 12.3 14
' SELENIUM, REC. (mg/I)
SODIUM, DISS. (mg/I) 726 773 734 760
SODIUM ADSORPTION RATIO 14.6 15.6
SULFATE, DISS. (mg/I) 1500 1500 1680
' SULFIDE, TOTAL (mg/I) 0.14 0.44
TOTAL DISSOLVED SOLIDS @ 180 DEG (mg/I) 1.1 1.06 2950
TOTAL DISSOLVED SOLIDS, CALCULATED (mg/I) 2670 2780
TOTAL SUSPENDED SOLIDS (mg/I)
VANADIUM, DISS. (mg/I) 0
~ ZINC, REC. (mg/I) 0.02 0.02 0