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S. S. Shuey <br />Adequacy Review Responses <br />July 23, 1992 <br />Page 2 <br />7a. The calculations on page 2.04-39iv were revised to incorporate <br />the distances and factors associated with the additional area. <br />7b. Pages 2.04-39 and 2.05-46iii & 46iv were revised to clarify <br />that mine pumping will be monitored, with records kept on <br />site, and reported to the Division quarterly and with the <br />annual hydrology reports. <br />7c. Somerset intends to apply to the State Engineers Office for a <br />well permit for beneficial use of the mine inflows. However, <br />Somerset does not currently use the mine inflow for any <br />purpose. In order to use the mine water for dust suppression <br />it must be clarified so it does not plug spray nozzles.. Clean <br />dust suppression water is pined into the mine from Somerset's <br />water system. Page 2.04-53ii was revised to specify that <br />Somerset will not use more water than it has a right to use. <br />7d. Wording was added to the first paragraph of page 2.05-46iv to <br />indicate that significant inflows, which may or may not be. <br />pumped, will be recorded and reported to the Division. <br />8. Enclosed are new pages 2.04-29xviii & xvix which incorporate <br />1992 spring monitoring. <br />9. The hydrologic monitoring plan and discussion on pages 2.05- <br />46iii and 2.05-47 was revised to include the eleven springs. <br />Monitoring will continue through 1993. Monitoring of springs <br />1 - 6 will recommence one year prior to a continue two years <br />after retreat mining. Page 2.05-46iv was revised to indicate <br />the operator would interpret and correlate the current years <br />spring monitoring data with past monitoring in the 1992 and <br />1993 annual hydrologic reports. <br />10. The water monitoring plan shown on page 2.05-46iii was <br />expanded to include Hardine Canyon, A, B and C Gulches• and <br />Hoopla Gulch. Man E8-3286 was revised to show the location of <br />the new monitoring points. <br />11. Pages 2.04-39iv and 39iva were revised to present a modified <br />estimate of mine inflow. As I have discussed with Randy <br />Price, it is virtually impossible to predict the inflow <br />associated with faults and fractures. The Sanborn Creek Mine <br />recently experienced a significant inflow associated with a <br />perched water table that was not related to a specific <br />identifiable surface feature. The Somerse*_ Mine had a similar <br />inflow. Instead of a study based on faults and fractures, the <br />areal extent of the Sanborn Creek Mine below the elevation of <br />the river was correlated to the areal extent of the old <br />