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Blue Ribbon Mine - AHR Page 3 <br />CONSUMPTIVE USE OF WATER <br />There was no consumptive use of water during the year. <br />METHODS <br />The following outline explains the methods used to perform the <br />current field monitoring: <br />pH - A Cole Parmer pocket-size tester. Range: -1.0 to 15.0 <br />pH. Resolution: 0.1 pH. Accuracy: +/- 0.1 pH. Temperature <br />compensation: automatic 0 to 50 °C. Calibration: 1, 2 or 3 <br />point. <br />Conductivity - Two Cole Parmer pocket-size testers with <br />different range capabilities. Accuracy: +/- 28 FS. <br />Temperature compensation: automatic 0 to 50 °C. Operating <br />temperature: 0 to 50 °C. Range: 0 to 1990 and 0 to 19,900 <br />umhos/cm. <br />Depth to Water - A Water Level Indicator (M-Scope) is used <br />to measure depth to water. The cable is marked in 5-foot <br />• increments. A tape measure is used to determine accurate <br />distances between marked increments. <br />Temperature - One of two methods; 1) a standard mercury <br />thermometer which measures temperature in degrees Celsius <br />or; 2) a microprocessor based temperature tester which <br />measures temperature in both Celsius and Fahrenheit with a <br />1° accuracy. <br />Flow - One of two methods is used to determine the flow at <br />the surface water monitoring stations. The flow in Hubbard <br />Creek is determined by measuring the depth and velocity of <br />flow in the 9.0 foot diameter culvert at the entrance to the <br />property. The flow from the bench underdrains is determined <br />by timing flow into a container of known size. <br />HYDROLOGIC IMPACTS <br />The 1994 hydrologic monitoring data indicates the hydrologic <br />impact from the reclaimed mine site is minimal to nonexistent. <br />n <br />U <br />