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so <br />• can be seen for the Argo Tunnel results in Table VI and in <br /> Figure 10. The samples were taken over the Spring runoff <br /> period to test for variations in concentration with flow. <br /> Measurement of flow, conductivity and temperature every week <br /> during the spring recharge is a good way to determine the <br /> type of aquifer. <br /> The reasons for knowing the type of aquifer are quite <br /> important. For any diffuse aquifer, the flow will be con- <br /> stant and the worry of overwhelming treatment facilities <br /> will be minimal. For conduit aquifers, the danger of over- <br /> whelming treatment equipment or having amine flood is quite <br /> real. Conduit aquifer water is probably unnecessary since <br /> diversion procedures could probably_be used on the surface <br /> <br />• above the mine to limit the amount of water entering the <br /> aquifer. The flood of the Idorado Mine near Silverton, <br /> Colorado in the Spring of 1978 is an example of damage by <br /> a conduit aquifer which could possibly have been averted. <br /> If the aquifer type is known, then more is known about the <br /> earth around the mine. Such knowledge not only helps to <br /> control water problems but adds to the knowledge needed for <br /> where to open the next adit. <br /> TESTS FOR COMPLIANCE TO REGULATIONS <br /> The water discharge permit dictates how often discharge <br /> water has to be analyzed and for what species analyses have <br /> to be made. The important point to understand is that such <br /> a discharge permit is a flexible contract. If the operator <br />