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water flow other than local perched aquifers that tend to contain limited amounts <br />• of water. Ground water monitoring shows that [he depth to ground water beneath <br />mine facilities is generally several hundred feet. <br />As shown on Drawing G-1, no significant ground water production occurs <br />in the area of the diatreme (i.e., ground water is not developed for use). The <br />ground water system within the diatreme is distinct from that in azeas surrounding <br />the diatreme. Mining activities will not have an effect on ground water. <br />Ground water data have been summarized for approximately 26 <br />monitoring wells in the Cresson Project area. The wells have been monitored on <br />at least a quarterly basis at most locations with some locations sampled more <br />frequently. Following is a summary of the information from the SMI Ground <br />Water Characterization Report (Appendix B of Appendix 1, Volume II of this <br />document) and a summary of information derived from monitoring and other site <br />• specific investigations. <br />Squaw Gulch <br />Water quality was summarized for five wells in Squaw Gulch. The oldest <br />well was installed in 1994 and the most recent well was installed in 1998. More <br />than five quarters of water quality data are available for the ground water in this <br />azea. Overall, the ground water in Squaw Gulch is chazacterized as calcium- <br />sulfate dominated, with variable amounts of bicazbonate, sodium+potassium, and <br />magnesium, and neutral pH. <br />Cresson Mine Area <br />Water quality was summarized for six wells in the Cresson Mine area. <br />The oldest well was installed in 1993 and the most recent well was installed in <br />1994. More than five quarters of water quality data aze available for the ground <br />• <br />28 <br />