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<br />SURFACE WATER Apr-98 May-98 Jun-98 <br />C-I Coal Gulch 20-Apr-98 28-May-98 02-Jun-98 <br /> <br />FIELD MEASUREMENTS <br />Flow GPM 1946 62 11.7 <br />pH standard 7.1 7 7.1 <br />Conductivity umhos/cm 150 120 ~ 80 <br />Temperature Celsius 7 10 12 <br /> <br />SURFACE WATER LAB RESULTS ' <br />Note 5 <br />pH standard 7.97 <br />Conductivity umhos/cm 496 <br />Total Suspended Solids mg/I 6 <br />Total Dissolved Solids mg/I 310 <br />Oil and Grease mg/I 0 <br />Sodium Adsorption Ratio 0.45 <br />Bicarbonate (HCO3-) mg/I 244 <br />Calcium (CA+2)(To[) mg/I 1 I.0 <br />Chloride (CI-) mg/I 4 <br />Magnesium (Mg+2)(To[) mg/I 3.6 <br />Nitrate-Nitrite mg/I I.5 <br />Phosphate (PO4-3 as P) mg/I 0.02 <br />Sodium (Na+)(Tot) mg/I 6.7 <br />Sulfate (SO4--) mg/I 51 <br />Aluminum (AI)(Tot) mg/I 0.02 <br />Arsenic (As)(Top mg/I 0.009 <br />Cadmium (Cd)(Tot) mg/I <0.005 <br />Copper (Cu)(Tot) mg/I 0.01 I <br />Iron (Fe)(ToQ mg/I 0.04 <br />Lead (Pb)(Tot) mg/I <0.05 <br />Manganese (Mn)(To[) mg/I 0.013 <br />Mercury (Hg)(Tot) mg/I <0.0002 <br />Molybdenum (Mo)(Tot) mg/I <0.05 <br />Selenium (Se)(Tot) mg/I 0.004 <br />Zinc Zn Tot) m I 0.013 <br />