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/V\k <br /> V'V <br /> MineWater <br /> March 18, 2019 <br /> Division of Reclamation, Mining and Safety -- Denver Office <br /> RE: NOI FILE NO.P2016-020 MODIFICATION <br /> Since August 2016 MineWater Finance LLC (MWF)has conducted exploration for mineral <br /> occurrences about the London Mine while addressing one of the most serious sources of <br /> pollution in the State of Colorado. The cause of the pollution is historic workings that were <br /> driven into the side of London Mountain from the 1870s until the 1940s and these workings <br /> penetrated zinc sulfide containing rocks that have leached zinc into the creeks since that time. <br /> MWF has succeeded at reducing the zinc mass loading to South Mosquito Creek by more than <br /> 80%since 2016 by decreasing the water contact with the minerals near the Extension Tunnel, <br /> and by in-situ treatment of a portion of the water within the Lower Davis workings. These efforts <br /> have been successful, but we have found that additional work on permanent diversion of non- <br /> tributary groundwater around the exposed ore zones is necessary to achieve the stringent <br /> standards for zinc pollution in the existing and anticipate discharge permit CO-0038334. <br /> The attached proposed Prospecting Notice Modification does exactly that. There presently exists <br /> more than 800 feet of standing water above the main Water Tunnel level that are providing <br /> hydraulic head forcing clean water to contact zinc-containing rocks exposed to air in the <br /> workings extending more than 1000 feet vertically (and laterally for more than 100 miles), above <br /> the Water Tunnel. We are aware of reports of high grade gold mineralization to the west of the <br /> London Fault and we anticipate draining the high pressure water surrounding these mineral <br /> occurrences through horizontal drilling as proposed in this Modified Notice,enabling potential <br /> development of these deposits in the future. Without decreasing the intrusion of clean water into <br /> the workings of the London Mine these deposits could not be safely or responsibly developed. <br /> Sincerely, <br /> Mine'Watcr Finance LLC <br /> Joseph G. Harrington, President. <br /> Copy: Steve Bain, Welborn Sullivan Meck&Tooley, Park County Commissioners,No Name <br /> Investors, and the City of Aurora Water Department. <br /> 10924 Leroy Drive, Northglenn CO 80233 <br />