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t <br /> leveled off, as defined by mutual agreement between SGC and DMG pursuant to the MLR <br /> Permit. Notice that equilibrium has been reached, as determined under the MLR Permit, will <br /> be provided by SGC to the Division within thirty days of such determination. Once the pool is <br /> at equilibrium, and after the two-year observation period required by the MLR permit, SGC <br /> will grout the valves and pipes in the bulkhead seals in the American and Terry Tunnels and <br /> place additional hydraulic seals downstream of the property line seal to eliminate the American <br /> Tunnel portal discharge and to allow final reclamation of the surface facilities as required by <br /> SGC's MLR Permit. Additional DMG approvals will be necessary for such further seals. <br /> SGC may also place infiltration controls to preclude water from entering the American Tunnel. <br /> Should maintenance of the portion of the American Tunnel downstream of the SGC property <br /> line seal and treatment of the American Tunnel discharge be undertaken by the property owner <br /> or other parties, then SGC will be released from any continued CDPS permit obligation at the <br /> American Tunnel. <br /> b. Mitigation Projects <br /> SGC will undertake and timely complete mitigation projects as set forth in <br /> Appendix B. It is anticipated that completion of these projects will allow for final termination <br /> of CDPS Permits No. CO-0027529 and CO-0036056 while maintaining the Reference Water <br /> Quality in the Upper Animas Basin. SGC will complete all of the "A" List projects. Unless <br /> this Consent Decree is prematurely terminated pursuant to Section IX, SGC also will complete <br /> as many of the "B" List projects and additional mitigation projects as are necessary for <br /> -18911-1.2/2"6 14 <br />