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Newmont,. CRIPPLE CREEK & VICTOR <br /> PO Box 191 <br /> CRIPPLE CREEK&VICTOR 1ictorC 8086Street <br /> Victor CO 80860 <br /> 9. Start generator, allow it to warm <br /> up. <br /> 10. Connect controller box to generator with power cord provided. <br /> 11. Turn pump controller on and begin to purge water. <br /> a. When flow is present adjust flow rate by using the up and down arrow <br /> buttons. <br /> b. Attempt to maintain a flow rate of to 0.1 to 0.5 L (0.0264 to 0.132 gpm) <br /> of water per minute and generally speaking not to exceed 1 L (0.264 <br /> gpm) per minute. <br /> c. Use 1 L vessel and stop watch to measure flow rate and record. <br /> 12. Begin to record parameters and draw down to monitor stabilization every 3 to <br /> 5 minutes, including; <br /> a. pH <br /> b. Specific conductance <br /> c. Dissolved Oxygen <br /> d. Temperature <br /> e. Turbidity <br /> • f. Oxidation/Reduction Potential <br /> 13. Continue to monitor purge flow rate. <br /> 14. While the well is purging, compile and label sample bottles. <br /> 15. Three successive parameter readings must be within the following tolerances <br /> of each other in order to collect samples. <br /> a. pH (+/- 0.1) <br /> b. Specific Conductance (3%) <br /> c. Dissolved Oxygen (10%for values greater than 0.5 mg/L, if three Dissolved <br /> Oxygen values are less than 0.5 mg/L, consider the values as stabilized) <br /> d. Turbidity (10% for values greater than 5 NTU; if three Turbidity values are <br /> less than 5 NTU, consider the values as stabilized), <br /> e. Temperature (3%) <br /> f. Oxidation/Reduction Potential (+/- 10 millivolts) <br /> 16. If the drawdown has exceeded 0.3 feet and stabilizes, calculate the volume of <br /> water between the initial water level and the stabilized water level. Add the <br /> volume of the water which occupies the pump's tubing to this calculation. This <br /> combined volume of water needs to be purged from the well after the water <br /> level has stabilized before samples are collected. <br /> a. Volume calculations and equations found in Appendix F <br /> • 17. Upon stabilization of parameters collect samples in pre labeled and pre <br /> preserved bottles, when possible following this general order; samples should <br /> Department THIS DOCUMENT IS UNCONTROLLED IN HARD COPY FORMAT Doc Id: <br /> S R Date of This Issue--/--/-- Date of Next Review:--/--/-- Page 57 of 73 <br />