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HYDROLOGIC MONITORING REQUIREMENTS FOR 2001-2002 <br />DESERADO MINE - PERMIT NO. C-81-018 <br /> Monkoring Sample <br />Well Site Piezometer No. Monitored Stratum Frequency Paremetere <br />Ground Water: <br />Qal-5 N/A White River Alluvium Quarterty Depth-to-water, pH, cond., Temp. <br /> Annual Full Suite AttachmentA <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 Sittstone 8 Coal Facies Annual Depth to water only <br />310129-4' 29-4U Upper Sandstone Facies Annual Depth to water only <br /> 29.4M Lower Sandstone Facies Annual De h to water onl <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 />310130.8' 30-8U Upper Sandstone Facies Annual Depth to water only <br /> 30-8M Siltstone & Coal Facies Annual Depth to water anry <br />310131-7' 31-7m Sittstone 8 Coal Facies Annual Depth to water only <br />310132-7' 32-7U Upper Sandstone Facies Annual Depth to water only <br /> 32-7M Sikstone & 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 Sittstone & Coal Facies Annual Depth to water only <br /> 33.8E Lower Sandstone Facies Annual Depth to water only <br />' These hales will be sampled and analyzed prior to mining through or bond release. Sampling will be limited to the middle <br />facie zone. <br />NOTE: All surface water monitoring has been discontinued since DMG's approval of the amendment in August 1997 (TR47). <br />A-1 <br />