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' 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 />310131-71- was sealed in 2001 following sampling and prior to being mined through. <br />310131-7M was sealed in 2010. <br />310129-4M was sealed in 2012 following sampling and prior to being mined through. <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 monitoring requirements with Permit Revision #6 starting with the <br />2008-2009 hydrologic year. <br />A-1 <br />HYDROLOGIC MONITORING REQUIREMENTS FOR 2008-2009 <br />DESERADO MINE - PERMIT NO. C-1981-018 <br />Monitoring <br />Sample <br />Well Site <br />Piezometer No. <br />Monitored Stratum <br />Frequency <br />Parameters <br />Ground Water: <br />Qal-5 <br />N/A <br />White River Alluvium <br />Quarterly <br />Depth -to -water, pH, cond., Temp. <br />Annual <br />Full Suite (Attachment A) <br />21012-17 <br />2-17U <br />Upper Sandstone Facies <br />Annual <br />Depth to water only <br />2-17L <br />Lower Sandstone Facies <br />Annual <br />Depth to water only <br />TW2-17M <br />Siltstone & Coal Facies <br />Annual <br />Depth to water only <br />21014-20 <br />4-20U <br />Upper Sandstone Facies <br />Annual <br />Depth to water only <br />4-20L <br />Lower Sandstone Facies <br />Annual <br />Depth to water only <br />310122-2 <br />22-21L <br />Lower Sandstone Facies <br />Annual <br />Depth to water only <br />310122-3 <br />22-3U <br />Upper Sandstone Facies <br />Annual <br />Depth to water only <br />22-3M <br />Siltstone & Coal Facies <br />Annual <br />Depth to water, pH, conductivity, <br />temperature, dissolved iron, diss. <br />manganese, TDS <br />310129-4' <br />29-4U <br />Upper Sandstone Facies <br />Annual <br />Depth to water only <br />29-4M <br />Lower Sandstone Facies <br />Annual <br />Depth to water <br />310130-8 <br />30-8U <br />Upper Sandstone Facies <br />Annual <br />Depth to water only <br />30-8M <br />Siltstone & Coal Facies <br />Annual <br />Depth to water only <br />310131-7 <br />31-7m <br />Siltstone & Coal Facies <br />Annual <br />Depth to water only <br />310132-7 <br />32-7U <br />Upper Sandstone Facies <br />Annual <br />Depth to water only <br />32-7M <br />Siltstone & Coal Facies <br />Annual <br />Depth to water only <br />32-71- <br />Lower Sandstone Facies <br />Annual <br />Depth to water only <br />310133-8' <br />33-8U <br />Upper Sandstone Facies <br />Annual <br />Depth to water only <br />33-8M <br />Siltstone & Coal Facies <br />Annual <br />Depth to water only <br />33-81- <br />Lower Sandstone Facies <br />Annual <br />Depth to water only <br />' 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 />310131-71- was sealed in 2001 following sampling and prior to being mined through. <br />310131-7M was sealed in 2010. <br />310129-4M was sealed in 2012 following sampling and prior to being mined through. <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 monitoring requirements with Permit Revision #6 starting with the <br />2008-2009 hydrologic year. <br />A-1 <br />