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Well Site <br />Ground Water: <br />310122 -3 <br />310129 -4 <br />22 -3U <br />22 -3M <br />HYDROLOGIC MONITORING REQUIREMENTS FOR 2010 -2011 <br />DESERADO MINE - PERMIT NO. C- 1981 -018 <br />Monitoring Sample <br />Piezometer No. Monitored Stratum Frequency Parameters <br />Qa1-5 N/A White River Alluvium Quarterly Depth -to- water, pH, cond., Temp. <br />Annual Full Suite (Attachment A) <br />21012 -17 2 -17U Upper Sandstone Facies Annual Depth to water only <br />2 -17L Lower Sandstone Facies Annual Depth to water only <br />TW2 -17M Siltstone & Coal Facies Annual Depth to water only <br />21014 -20 4 -20U Upper Sandstone Facies Annual Depth to water only <br />4 -20L Lower Sandstone Facies Annual Depth to water only <br />310122 -2 22 -2L Lower Sandstone Facies <br />Upper Sandstone Facies <br />Siltstone & Coal Facies <br />29 -4U Upper Sandstone Facies Annual Depth to water only <br />29 -4M Lower Sandstone Facies Annual Depth to water <br />310130 -8 30 -8U Upper Sandstone Facies Annual Depth to water only <br />30 -8M Siltstone & Coal Facies Annual Depth to water only <br />310131 -7 31 -7m Siltstone & Coal Facies Annual Depth to water only <br />310132 -7 32 -7U Upper Sandstone Facies Annual Depth to water only <br />32 -7M Siltstone & Coal Facies Annual Depth to water only <br />32 -7L Lower Sandstone Facies Annual Depth to water only <br />310133 -8 33-8U Upper Sandstone Facies Annual Depth to water only <br />33 -8M Siltstone & Coal Facies Annual Depth to water only <br />33 -8L Lower Sandstone Facies Annual Depth to water only <br />1 These holes will be sampled and analyzed prior to mining through or bond release. Sampling will be limited to the middle facie <br />zone. <br />310131 -7L was sealed in 2001 following sampling and prior to being mined through. <br />310131 -7M was sealed in 2010. <br />NOTE: All surface water monitoring has been discontinued since DRMS's approval of the amendment in August 1997 (TR47). <br />Monitoring Wells 22 -2L, 22 -3M, and 22 -3U were added to the monitonng requirements with Permit Revision #6 starting with the <br />2008 -2009 hydrologic year. <br />Annual <br />Depth to water only <br />Annual Depth to water only <br />Annual Depth to water, pH, conductivity, <br />temperature, dissolved iron, diss. <br />manganese, TDS <br />