HYDRO26355

• Permit No: C1989074
• IBM Index Class Name: Hydrology
• Doc Date: 3/30/1994
• Doc Name: RIMROCK COAL MINE C-89-074 MONITOR WELL RESULTS REVISED
• From: LANDMARK RECLAMATION INC
• To: DMG
• Permit Index Doc Type: OTHER GROUND WATER
• Media Type: D
• Archive: No

COLORADO
NALYTICAL \
LABORATORY
SOIL
WATER
ENVIRONMENTAL
LANDMARK RECLAMATION
MARK KERR
02/02/94 PROJECT: RIMROCK MINE
PAGE 2 OF 3 SAMPLE RESULTS:
4th QUARTER 1993 SAMPLES:
EMD
- MONTOYA
------- WELL #29-4
---------- USGS
----
TOTAL SUSPENDED SOLIDS mg/1 --
2 2 14 10
TOTAL DISSOLVED SOLIDS mg/1 2,108 2,246 2,256 2,180
TOTAL HARDNESS as CaC03 mg/1 349.8 432.5 438.3 440.0
CARBONATE mg/1 2.2 5.5 8.2 1.9
BICARBONATE mg/1 387.2 414.5 420.2 426.5
CALCIUM mg/1 139.9 173 175.3 176
FLUORIDE mg/1 0.469 0.431 0.427 0.429
MAGNESIUM mg/1 45.8 59.7 57.5 55.1
NITROGEN - AMMMONIA mg/1 <.1 <.1 <.1 <.1
NITROGEN - NITRATE mg/1 2.15 4.58 5.91 5.26
PHOSPHATE mg/1 <.01 <.01 <.01 <.O1
POTASSIUM mg/1 6.4 4.7 5.2 5.3
SODIUM mg/1 473.0 469.0 464.0 422.0
SULFATE mg/1 1138.5 1233.4 1175.7 1123.8
SULFIDE mg/1 <1 <1 <1 <1
ALUMINUM mg/1 0.098 0.145 0.131 0.220
ARSENIC mg/1 (.001 0.001 (.001 (.001
BARIUM mg/1 0.55 0.70 0.61 0.48
CADMIUM mg/1 0.005 0.004 0.005 0.006
CHROMIUM mg/1 <.02 <.02 <.02 <.02
COPPER mg/1 0.015 0.008 0.006 0.008
IRON mg/1 0.04 0.02 0.01 0.03
LEAD mg/1 0.02 0.03 <.01 <.01
MANGANESE mg/1 0.02 0.01 0.02 0.01
MERCURY mg/1 (.0001 (.0001 (.0001 (.0001
MOLYBDENUM mg/1 <.1 <.1 <.1 <.1
NICKEL m9/1 <.01 <.01 <.01 <.O1
SELENIUM mg/1 0.032 0.026 0.043 0.047
ZINC mg/1 0.028 0.014 0.014 0.013
CATION/ANION BALANCE 1.000 1.002 1.017 0.998
CHLORIDE mg/1 41.0 34.5 39.5 35.0
BORON mg/1 0.11 0.10 0.10 0.12
pH units 8.33 8.42 8.45 8.35
SPEC. CONDUCTANCE umh os/cm 3,605.3 3,779.8 3,634.4 3,721.6
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240 S. Mein Street • Brighton, Colorado BOB01 • (303] 856-231 3
Mailing Addreee: P.O. Drawer 507, Brighton, CO BOB01