1988-04-11_PERMIT FILE - C1981008A ‎(12)‎

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/11/1988
• Doc Name: Ground Water Quality Analysis Including Aquifer Statistics for Nucla & Proposed Nucla East Mining
• Section_Exhibit Name: Tab 7 Appendix 7-4
• Media Type: D
• Archive: Yes

NUCLA EAST MINE GROUND WATER QUALITY REPORT
SAMPLE POINT GW-N17P1(WBO117)
LOCATION 46N15W6BCC
GEOLOGIC UNIT DAKOTA COAL
DATE OF COLLECTION 07/13/86 10/15/86 01/28/87 04/29/87 11/17/87
FIELD PARAMETERS
CONDUCTIVITY (UMHOS/CM) 2480.00 2100.00 2080.00 2450.00 1210.00
PH (UNITS) 8.85 10.25 10.28 9.13 7.58
WATER TEMPERATURE (DEG C) 17.80 12.80 11.00 13.00 11 .00
DEPTH TO WATER (FT) 42.01 42.32 43.98 44.26 33.16
LABORATORY PARAMETERS
ALKALINITY, DISS. (MG/L OF CAC03) 236.00 75.00 46.00 82.00 240.00
ALUMINUM, DISS. (MG/L) < 0.05 0.05 < 0.05 < 0.05 0.05
ARSENIC, DISS. (UG/L) < 1.00 < 1.00 < 1.00 < 1.00 < 1 .00
BARIUM, DISS. (UG/L) 60.00 40.00
BICARBONATE, DISS. (MG/L) 288.00 0.00 7.00 95.00 288.00
BORON, DISS. (UG/L) 160.00 120.00 180.00 230.00 270.00
CADMIUM, DISS. (UG/L) < 5.00 < 5.00 < 5.00 < 5.00< 5.00
CALCIUM, DISS. (MG/L) 105.00 53.00 16.00 33.00 47.00
CARBONATE, DISS. (MG/L) 0.00 12.00 24.00 2.00 2.00
CHLORIDE, DISS. (MG/L) 24.00 27.00 28.00 30.00 31 .00
CHROMIUM, DISS. (UG/L) < 10.00 < 10.00< 10.00
CONDUCTIVITY @ 25 DEG C (UMHOS/CM) 2980.00 2620.00 2870.00 3050.00 3240.00
COPPER, DISS. (UG/L) < 10.00 < 10.00 < 10.00 < 10.00 < 10.00
FLUORIDE, DISS. (MG/L) 0.39 0.70 0.50 0.60 0.50
v HARDNESS AS CAC03 (MG/L) 664.00 247.00 81 .00 185.00 269.00
IRON, DISS. (MG/L) < 0.02 < 0.02 < 0.02 < 0.02< 0.02
N LEAD, DISS. (UG/L) 20.00 < 20.00 < 20.00 < 20.00< 20.00
MAGNESIUM, DISS. (MG/L) 98.00 28.00 10.00 25.00 37.00
MANGANESE, DISS. (MG/L) < 0.01 < 0.01 < 0.01 < 0.01 < 0.01
MERCURY, DISS. (UG/L) < 0.20 < 0.20 < 0.20 < 0.20 < 0.20
MOLYBDENUM, DISS. (UG/L) < 50.00 < 50.00 < 50.00 < 50.00< 50.00
NICKEL, DISS. (UG/L) < 20.00< 20.00
NITROGEN, AMMONIA, DISS. (MG/L1 2.68 5.76 3.59 2.14 2.29
NITROGEN, NITRATE, DISS. (MG/L) 0.02 < 0.02 < 0.02 0.05 < 0.02
NITROGEN, NITRITE, DISS. (MG/L) < 0.01
PH @ 25 DEG C 8.20 9.80 9.70 8.50 8.40
PHOSPHATE AS PO4, DISS. (MG/L) 0.20 < 0.10 < 0.10
POTASSIUM, DISS. (MG/L) 20.00 12.00 11.00 13.00 16.00
SELENIUM, DISS. (UG/L) < 1.00 < 1.00 < 1.00 < 1 .00< 1.00
SILVER, DISS. (UG/L) < 10.00 < 10.00< 10.00
SODIUM, DISS. (MG/L) 447.00 641.00 676.00 643.00 785.00
SAR 7.63 17.93 33.05 20.80
SULFATE, DISS. (MG/L) 1519.00 1379.00 1443.00 1550.00 11182.00
SULFIDE, TOTAL (MG/L) 0.50
SUSPENDED SOLIDS (MG/L) 300.00 1332.00 156.00 404.00 528.00
m ZINC, DISS. (MG/L) < 0.01 0.01 < 0.01 < 0.01 < 0.01
CATION/ANION BALANCE (q) - 5.40 3.46 0.57 4.01 4.60
N DISS. DISSOLVED SOLIDS @ 180 DEG (MG/L) 2292.00 1968.00 2048.00 2306.00 2454.00
a. DISS. DISSOLVED SOLIDS, CALCULATED (MG/L) 2355.00 2185.00 2217.00 2332.00 2528.00
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CD INDICATES NO DATA
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