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HYDROLOGIC MONITORING REQUIREMENTS FOR 2000-2001 <br />DESERADO MINE -PERMIT NO. C-81.018 <br /> Monitoring Sample <br />Well Site Piezometer No. Monitored SVatum Frequency Parameters <br />Ground Water: <br />Qal-5 N/A White River Alluvium Quarterly 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 Siltstone & Coal Facies Annual Depth to water only <br />310129-0~ 29-4U Upper Sandstone Facies Annual Depth to water only <br /> 29-4M Lower Sandstone Facres Annua! De th to water onl <br />2101420 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 wafer 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 & Coa! 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-SM Siltstone & Coal Facies Annual Depth to water only <br /> 33-8L Lower Sandstone Facies Annual 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 />NOTE: All surface water monitoring has been discontinued since DMG's approval of the amendment in August 1997 (TR47). <br />A-1 <br />