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~- SOMERSET <br />M/ N/ N G C O M P A N Y <br />RFCF~~~C <br />CEP ~ ,;, . <br />~;v~s,C, d~~ 11 <br />C; ~ <br />.~,^E, ;S <br />c ~ C,~ `~Y <br />September 15, 1994 <br />Anthony Waldron <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RE: Somerset Mining Company <br />Spring Monitoring Report <br />Permit C-81-022 <br />Dear Mr. Waldron: <br />iii iiiiiiiiniii iii <br />During the 1992 review of Permit Revision No. 2, the Division <br />required SMC to conduct an on-the-ground survey of the surface <br />area within the proposed Sanborn East Tract permit boundary to <br />verify and/or update the Western Slope Carborn spring and seep <br />data previously submitted. Also, the Division required a <br />monitoring program for the eleven springs monitored previously by <br />the Hawks Nest Mine. <br />The Division stated: "This monitoring data is valuable in <br />characterizing the seasonal fluctuations of the springs in the <br />area that will be mined. The Somerset Mine should have resumed <br />monitoring these springs to establish a correlation between the <br />old data and what is occurring currently. In lieu of this, the <br />mine should conduct a spring and seep survey next year and <br />compare this data with that already collected. This will be <br />necessary to establish the baseline. The baseline will be used <br />to see if the proposed mining activity will have a detrimental <br />impact on the springs. Somerset should submit an interpretation <br />of the correlation of the monitoring results of the new data. <br />This should be incorporated into the permit's statement of <br />probable hydrological consequences. The Somerset Mine should <br />also commit to a monitoring plan that will monitor these springs <br />during subsidence. The following is a suggested monitoring plan <br />and schedule for submittal of information. <br />P.O. Box 535 7901 Southpark, Suite 202 <br />Somerset, CO 81434 Littleton, Co 80120 <br />(303)929-5122 Fax (303)929-5177 (303)795-0413 Fax (303)795-1524 <br />