Laserfiche WebLink
§2.05 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND MINING <br />ACTIVITIES --MINIMUM REQUIREMENTS FOR OPERATION AND RECLAMATION <br />PLANS. <br />Depth to Water - A Water Level Indicator (M-Scope) is used to <br />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 - A standard mercury thermometer which <br />measures temperature in degrees Celsius and a Cole Parmer <br />microprocessor-controlled tester (Temptester). Range: -28 to <br />150° C. Resolution: 1° C. Accruacy: ±1% FS. <br />Dissolved oxygen - Horiba Model U-7, membrane type with <br />automatic temperature compensation to 0 to 40° C, galvanic <br />cell 0 to 20 ppm t 1.0 ppm. <br />The electronic water monitoring instruments may vary. <br />However, the stated accuracy of the instruments will be equal <br />to or greater than that listed above. <br />The pH meter and the conductivity meter are calibrated prior to <br />all sampling events. The pH meter is calibrated using the 2 <br />point method. The expected pH is bracketed by the pH of the <br />calibration solution. In most cases the pH meter will be <br />calibrated at 7.0 and 10.0 which will bracket all of the current <br />monitoring results. If an expected pH is less than 7, the pH <br />meter will be calibrated at 4.0 and 7.0. <br />Flow -One of two methods, 1) time of flow into a container of <br />known size and 2) utilize a portable 60° V-Notch weir. <br />TR-020 2.05 - 42 3/01 <br />