Laserfiche WebLink
6. Known aquifers <br /> According to the U.S. Geological Survey's Ground Water Atlas of the United States,the only <br /> bedrock groundwater aquifer system in this area is the Rio Grande aquifer system.'Depth to <br /> water table in the permit area varies depending on location and time of year but may exceed 100 <br /> below ground surface. This depth will not be reach by mining or affected by mining. The San <br /> Luis Valley aquifer exists at a shallower depth, and is located in the valley alluvium and fill that <br /> predominates in the area. The depth to this local aquifer was approximately 8 feet in 1980 and is <br /> currently approximately 15 feet. Regional data shows local groundwater from wells even deeper <br /> (40+feet deep). <br /> 7. Surface Water <br /> The Mystic Soil site is essentially flat. Drainage direction prior to mining is shown on Map C-1. <br /> Map C-2 shows the drainage direction during mining. Map F-1 shows the drainage direction <br /> once reclamation is complete. The priority for surface water protection at the Mystic Soil is <br /> preventing the discharge of sediment, oil, and/or hydraulic fluids from the operational areas into <br /> Lateral Forty-seven of the Farmers Union Canal. Oil and hydraulic fluids are contained on the <br /> site using standard best management practices related to the storage and transfer of such fluids. <br /> These include the use of secondary containment around storage and transfer points, spill kits, and <br /> employee training on safe handling practices. Sediment is trapped onsite using controls and best <br /> management practices related to directing and controlling surface water runoff that enters <br /> disturbed areas. <br /> hiips://pubs.usgs.)zov/ha/ha730/ch c/ <br /> Mystic Soil <br /> November 2020 G-4 i.r"I iaj 2"%Wwislm PIJA <br />