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greater than 1,320 gallons of oil in above-ground storage tanks. Less than this volume of 1,320 <br />gallons of oil would be stored at the Topaz mine; therefore, no SPCC plan is required. <br />G.2 Groundwater <br />A CDPHE Colorado Discharge Permit System (CDPS) groundwater discharge permit is not <br />required at the Sunday Mine Complex because mine dewatering (and subsequent discharge of <br />water) does not occur at the mine. It is not anticipated that groundwater will be encountered <br />during mining operations; however, should groundwater seep into the underground mine <br />workings, Denison will route the water to sumps within the mine, making the Topaz Mine a zero <br />groundwater discharge mine. <br />G.3 Water Usage <br />Water used during production will be used for drifting, sanitation, and dust suppression and will <br />be provided by a mine contractor. It is expected that mining operations at the Topaz Mine will <br />consume 2,800 gallons per week and 19,500 cubic feet annually. Sanitation and dust suppression <br />will use 200 gallons per week and 1,400 cubic feet annually. <br />The average annual precipitation at the Topaz Mine is 11.6 inches. It is anticipated that <br />precipitation alone will be sufficient for revegetation efforts during reclamation. <br />5-18-2007 Ezhibit G Water Info (i-3 <br />