2020-05-08_PERMIT FILE - M2020007

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EXHIBIT G WATER INFORMATION (revised 5/5/20) Introduction The site is located about 3 . 5 miles north of Fort Lupton, Colorado . Please refer to EXHIBIT B-VICINITY MAP for the property configuration and the relationships to surrounding geological features . The site is bordered on the north by Weld County Road 22 . 5 and on the south by Weld County Road 20 , on the west by the South Platte River and on the east by the neighboring agricultural properties . There are two (2) ditches that cross the property from north to Platte Valley Canal and a landowner- owned irrigation return flow ditch (noted as the Cannon Return Flow Ditch on the permit maps) . There is one (1) ditch that crosses the property from north to south in the eastern area - the Platteville Ditch. None of these ditches will be disturbed by mining. In addition, the western and eastern areas of the mine are divided by a Transportation Corridor which contains U. S . Highway 85 and the Union Pacific Rail Road tracks . This transportation corridor will not be mined.Based on regional groundwater studies and the experience gained by L .G. Everist, Inc . during numerous previous permit applications they have found that slurry wall liners mitigate any impacts to groundwater on nearby areas surrounding a lined reservoir. Additionally, the ditches, river and streams lying across or around the site will limit groundwater mounding or shadowing. If any significant groundwater changes do occur, they can be mitigated as discussed below. Mitigation Trigger Starting in October 2019, L.G. Everist, Inc . began to collect groundwater elevations from newly installed monitoring wells on and around the mine area to establish historic ground water elevations around and on the site . A 2-year period from October 2019 to September 2021 will be used as the baseline for triggering mitigation actions . Mining will start in Phase 1-A, which is the first unlined area . The depth to ground water in this Phase - according to the data collected - is an average of 17 . 5 feet below the surface, so shallow mining work can be done without exposing groundwater . This will give time to collect the 5 quarters of data before any potential impacts could occur to adjoining wells The baseline data needed for the areas will be in place before installation of the slurry walls begins . There are outside influences not caused by any mining operations of L. G. Everist, Inc . These outside influences that have been acting on the groundwater levels will continue to L G Evenst,Inc Ragsdale Reservoirs May 5,2020 27