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<br />Groundwater: <br />(I) No gravity discharge is anticipated from any the old Somerset Mine portals <br />Wells B-6 and H-10 monitor the B-seam of the old Somerset Mine at a lower elevation than the <br />portals. These wells again were dry in 2003, implying that any in-filling of the old Somerset <br />workings is not a problem. It would be helpful to clarify in the narrative the important elevations <br />involved, mainly the maximum depth (expressed as elevation) at which these wells aze screened. <br />For the B-6 well, the narrative includes the estimated elevation of the B-seam at that location. <br />Since the wells were dry at 6010 and 6014 feet (by the narrative) and the Somerset portals are all <br />6200 feet in elevation or higher, the mine does not appeaz to be filling with water that would <br />dischazge from any of those portals. <br />(2) Mine inflow predicted at 235 gpm with a TDS of 2731 mgA. <br />Data indicate the actual inflow falls fell well within the predicted values. <br />(3) Localized temporary effects will be noted including altered groundwater flow patterns, <br />depletion of seeps and springs, and an increase in TDS and other species in groundwater. <br />Again in 2003, the two springs remaining in the monitoring plan - SP-8 and SP-9 -did not <br />discharge. Given the long-term drought it can't be determined if the lack of flow is a result of <br />the drought or from some effect brought about by mining in the Sanborn Creek Mine. <br />(4) Subsidence will not cause any changes in surface flow patterns <br />There is no evidence that this has occurred. <br />There are no further issues. If you have any questions, please call me <br />Sincerely, <br />a <br />Jim Burnell <br />Environmental Protection Specialist <br />Cc: S. Brown <br />