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EXHIBIT G WATER INFORMATION <br /> 1 . General <br /> Surface water features near the Lockhart Pit include the various ephemeral drainage channels <br /> connecting the uphill rangeland to the Colorado River to the south. These features can be seen <br /> in the Exhibit C and F maps; Map G-1 shows the drainage basins and patterns for the site in <br /> premine, mine, and reclaimed conditions. Groundwater is below the bottom of mining as none <br /> has been encountered during exploration or past mining operations and adjacent wells are <br /> installed below the bottom of mining. There is no risk of flooding according to the Federal <br /> Emergency Management Agency (FEMA) flood mapping services; the flood zones for the <br /> Colorado River do not reach this site. No wells are located on any area that is intended to be <br /> mined. Local wells are located far enough from mining horizontally and vertically to be <br /> unaffected by mining operations. The operator is committed to maintaining the prevailing <br /> hydrologic balance during their operations. <br /> 2. Water Quality Protection <br /> The primary concerns surrounding water quality protection at the Lockhart Pit site are the <br /> potential impacts to the surface and groundwater from sediment, hydraulic fluids, and diesel <br /> fuel. Sediment will be controlled through the use of stormwater retention within the disturbance <br /> area through the life of the mine. The site will be graded in a manner that maintains all surficial <br /> flows within the disturbed area, in turn containing all sediment and unwanted discharges from <br /> leaving the site. Surface water control methods will be installed and maintained in accordance <br /> with a Stormwater Management Plan (SWMP) for the site. Stormwater control measures such <br /> as berms and sumps can be seen on Map C-2 and Map G-1. Stormwater control structures will <br /> remain in place until vegetation is established in all disturbed areas uphill of a given stormwater <br /> control structure. For example, berms and ponds/sumps within the East Pod will not be removed <br /> until the East Pod has been successfully reclaimed including sufficient revegetation to control <br /> erosion. <br /> Hydraulic fluids and diesel fuels will be contained within vehicles or with adequate storage <br /> methods that follow best practices of maintenance; these practices including regular inspections <br /> of vehicles, hydraulic lines, and any other potential spill sources. Diesel fuel will not be stored <br /> onsite. All fuels and maintenance oils will be stored at the existing Brig Pit. <br /> Any surface water discharges of stormwater from the site will be sampled in accordance with <br /> the NPDES discharge permit. No stormwater discharges are anticipated as part of mining since <br /> the mining pods can contain the 100-YR runoff event. A stormwater discharge permit will <br /> nonetheless be secured from the Colorado Department of Public Health and Environment. <br /> Discharge outfalls will be determined at the time of NPDES permit application. <br /> Lockhart Pit <br /> March 2024 G-1 Lewicki&Associates <br />