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t•titigation Plan - significant Ponds: <br />M 1. CWI projects small effects due to subsidence. Substantial protection of <br />various rights can be afforded with regular monitoring and a quick repair of <br />subsidence-induced problems. A great many of the significant ponds will not <br />be undermined but will be protected by underground methods. For those that <br />are not, CWI proposes quick repair, as shoran in the Subsidence f~pair Hand- <br />boo}.= Zhe filling of the pond would be through spring flow or CwI would haul <br />water to fill the pond. <br />2. CWI designates an alternate pond if a significant pond is affected by subsi- <br />dence-induced problems. Zhat alternative pond is as designated in Section <br />II, Summary of Water Resources. Chances of both ponds being affected at the <br />same time is extremely low, based on existing mine planning and subsequent <br />pillar extraction. <br />3. Ponds would refill themselves in spriny-fed cases and CWI would fill the pond <br />to the pre-mining level, if required. <br />A7itigation Plan - Significant Springs: <br />1. CWI projects small effects due to subsidence. Substantial protection of <br />various water rights can to afforded with regular monitoring and quick repair <br />of subsidence-induced problems. CWI believes that repair of springs is pos- <br />sible. The repair would be difficult and the results are not guaranteed, but <br />sane fl as would be reestablished. For detailed information rn the repair, <br />refer to the Spring Repair Section of the Subsidence Repair Handbook. <br />2. If fl avs do not meet the pre-mining condition, C4lI would enlarge the coller <br />tion facility for the spring. This enlargement would be done with additional <br />perforated pipe and porous gravels. CWI currently a,~ns the majority of sig- <br />nificant springs, as shown in Section II-B. <br />I <br />