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Groundwater: <br />(1) No gravity discharge is anticipated from any the old Somerset Mine portals <br />Discussions with the staff at Oxbow indicate that well H-10 is associated with the <br />workings in the Somerset Mine and was designed to measure the level of water in those <br />workings to predict the rate of filling. That being the case, the fact that there has been no <br />measurable water in that well for the last two yeazs indicates that the Somerset Mine <br />workings aze not filling with water and there will, in fact, be no discharge. <br />(2) Mine inflow predicted at 235 gpm with a TDS of 2731 mg/l. <br />Data indicate the achzal inflow falls well within the predicted values. <br />(3) Localized temporary effects will be noted including altered groundwaterflow <br />patterns, depletion of seeps and springs, and an increase in TDS and other species in <br />groundwater. <br />Many springs have diminished flow or have ceased flowing at all. This is interpreted to <br />represent the effects of prolonged drought on springs that are fed mainly by meteoric <br />water, rather than water coming from the bedrock. <br />(4) Subsidence will not cause any changes in surface flow patterns. <br />No evidence that this has occuned.. <br />Two other minor issues were noted. For several yeazs one of the data pages for Well H- <br />l Ohave been labeled "Hubbard Creek TDS and Conductivity." <br />The Division disagrees with the text that describes no significant differences in 2001 for <br />water from well TC-2. Total dissolved solids (TDS) totals were extremely high during <br />one of the sampling events, as was total Fe. These results could represent an anomaly, <br />but should have been noted. <br />If you have any questions, please call me. <br />Sincerel <br />L~{2~G~ <br />Jim Burnell <br />Environmental Protection Specialist <br />Cc: S. Brown <br />