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2. A detailed breakdown of pumping equipment to be used, including pump rates, pump <br /> capacities, and expected pumping time. <br /> 3. A disposal plan for the stored water and sufficient bond to cover the necessary cost to <br /> dispose of the water stored onsite. <br /> a. As needed a Colorado Department of Public Health & Environment discharge <br /> permit will be secured if discharge is determined to be needed and a copy of said <br /> discharge permit submitted to CDRMS. <br /> Water levels in the Times Mine will be measured using the sounding equipment currently used <br /> at the Gold Hill Mill. Dewatering will be considered complete when the water within the Times <br /> Mine is measured at least 0.5-ft below the known top of the Wynona Winze and when the <br /> pressure against the bulkhead is <1 psi. Once the water is pumped out of the TimesM/ynona to <br /> the below the top of the Wynona Winze, a secondary pump will be used to drain the water <br /> stored between the back of the Times bulkhead and the Wynona Winze. This must be done <br /> from the Times bulkhead as the Times tunnel slopes uphill from the bulkhead to the Winze. <br /> Upon completion of this dewatering action, the operator will provide CDRMS with a complete <br /> report regarding the pumping activity, any discharges of water that took place, and the total <br /> volume of water and where at the mill it is stored. <br /> Once dewatering has taken place, an underground crew will cut out the top 1-foot of the existing <br /> Times bulkhead, rendering it inoperable. Times/VVynona Mine water storage capacity will then <br /> be limited to what is stored below the top of the Wynona Winze. There will no longer be a <br /> pressurized bulkhead in the Times/Wynona Mine in this scenario. <br /> 1.1. Limited Pump Test Results <br /> A limited pump test was conducted in the spring of 2022 with authorization from BLM and <br /> CDRMS. The pump test moved roughly 63,000 gallons of water from the Times/Wynona Mine <br /> into the thickener tank within the Gold Hill Mill. The pump test was not able to determine the <br /> impact of the Wynona 100-Level on the total water volume of the Times/Wynona Mine. <br /> Therefore, it must be assumed that any dewatering plan will have to dewater at least 370,000 <br /> gallons from the Times/Wynona Mine. <br /> 2. Times Mine Bulkhead — New Design <br /> Colorado Milling Company, LLC has developed a bulkhead design with Schnabel engineering to <br /> augment the existing bulkhead within the TimesMlynona Mine. The bulkhead will be able to <br /> hold back up to 103 feet of head behind, allowing for full use of the Times/Wynona Mine as a <br /> water storage container for Colorado Milling Company's water rights from Left Hand Creek. The <br /> design details are attached. <br /> Based on the Schnabel design, a 6-foot thick bulkhead with a grout ring. The grout ring will <br /> reduce seepage and bring the bulkhead into compliance. Schnabel recommends monitoring of <br /> GHM Q1 2022 <br /> July 2022 2 Lewicki&Associates <br />