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unlikely that a new vein with contaminated water could enter the drill hole and make it into the <br /> mine water even after the drill hole is plugged.No water from any source in the mine has ever <br /> been found to be contaminated. The fractures and veins are located in the Leadville Limestone, <br /> which is a high pH mineral (calcium carbonate), which has always buffered any chemical <br /> reactions that may take place in the metal sulfides present in the veins. <br /> 13 —Appendix B has water quality data from many timeframes over the past 10 years. Some <br /> earlier sample data is not a full test of all ions tested in the recent sampling but overall, there is a <br /> fairly good set of quality information on Mosquito Creek. <br /> 14—The Hock Hocking Mine water is being sold to downstream users and there is a <br /> sophisticated measuring and telemetry system which records the daily flows and sends them to <br /> an engineering office in Denver. This system is based on a Parshall flume located at the portal. A <br /> transducer next to the fume is calibrated to the level of the flume and sends the data constantly <br /> by direct phone line to the water consultant office in Denver. Once per month, a site visit is made <br /> to ensure that the equipment is operating properly and to calibrate the flume, if needed. <br /> 15 —Three weeks after drilling commences, samples of the mine water discharge, as well as <br /> upstream and downstream on Mosquito Creek will be sampled and the results of this testing, in <br /> addition to a narrative describing the results, will be supplied to the Division within 1 month <br /> after the lab analyses are obtained. <br />