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COLORADO <br />ANALYTICAL <br />LABORATORY <br />SOIL <br />WATER <br />LANDMARK RECLAMATION <br />MARK KERR <br />02/02/93 PROJECT: RIMROCK MINE <br />PAGE 3 OF 3 SAMPLE RESULTS: <br />ENVIRDNMENTAL <br />1st QUARTER 1994 SAMPLES: <br /> EMD <br />-- MONTOYA <br />------- WELL #29-4 <br />---------- USGS <br />---- <br />TOTAL SUSPENDED SOLIDS mg/1 - <br />4 2 4 12 <br />TOTAL DISSOLVED SOLIDS mg/1 2,018 2,354 2,246 2,034 <br />TOTAL HARDNESS as CaC03 mg/1 323.8 414.8 422.3 440.8 <br />CARBONATE mg/1 5.5 11.2 6.8 1.1 <br />BICARBONATE mg/1 345.0 417.1 429.9 416.1 <br />CALCIUM mg/1 129.5 165.9 168.9 176.3 <br />FLUORIDE mg/1 0.419 0.425 0.430 0.417 <br />MAGNESIUM mg/1 42.3 51.5 52.9 50.4 <br />NITROGEN - AMMMONIA mg/1 <.1 <.1 <.1 <.1 <br />NITROGEN - NITRATE mg/1 3.87 5.23 6.45 6.02 <br />PHOSPHATE mg/1 <.01 <.01 <.01 <.01 <br />POTASSIUM mg/1 5.3 5.2 4.9 5.1 <br />SODIUM mg/1 420.1 454.2 465.3 435.2 <br />SULFATE mg/1 1024.6 1151.7 1167.6 1142.7 <br />SULFIDE mg/1 <1 <1 <1 <1 <br />ALUMINUM mg/1 0.101 0.160 0.120 0.222 <br />ARSENIC mg/1 (.001 0.002 0.001 (.001 <br />BARIUM mg/1 0.71 0.85 0.75 0.64 <br />CADMIUM mg/1 0.006 0.006 0.004 0.001 <br />CHROMIUM mg/1 <.02 <.02 <.02 <.02 <br />COPPER mg/1 0.017 0.009 0.008 0.005 <br />IRON mg/1 0.09 <.01 0.01 0.02 <br />LEAD mg/1 <.01 <.01 <.01 0.01 <br />MANGANESE mg/1 0.01 0.01 0.01 0.01 <br />MERCURY mg/1 (.0001 (.0001 (.0001 (.0001 <br />MOLYBDENUM mg/1 <.1 <.1 <.1 <.1 <br />NICKEL mg/1 <.01 <.O1 <.01 <.01 <br />SELENIUM mg/1 U.048 0.038 C.036 0.056 <br />ZINC mg/1 0.026 0.012 0.014 0.015 <br />CATION/ANION BALANCE 1.007 0.995 1.002 0.997 <br />CHLORIDE mg/1 24.0 34.1 34.5 34.1 <br />BORON mg/1 0.05 0.13 0.17 0.12 <br />pH units 8.38 8.44 8.38 8.32 <br />SPEC. CONDUCTANCE umhos/cm 3,169.2 3,725.2 3,558.4 3,502.8 <br />(~ 25c) <br />J13~ ~ 3S fr3 zo <br />w,t--rn~z ~'. ,Z 3 ~ z ,2 Z ~ ~ <br />240 S. Mein Street • Brighton, Colorado BOBO'I • [303) B5B-23'13 <br />Mailing Addreee : P.O. Drawer 5 D7, Brighton CO 8060'1 <br />