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TRANSIT MIX AGGREGATES <br />Overview <br />The Applicant, Castle Concrete, proposes this phased mining plan (Plan) to accomplish <br />followin, objectives: <br />1. Applicant has developed this Plan to stabilize the entire previously mined area at <br />Pikeview Quarry. The design will increase the safety factors of the final highwalls and <br />reduce the risk of future slides from occurring. <br />2. T r Applicant intends to fully reclaim the Pikeview mine site to fulfill its obligations <br />under its current CDRMS permit. <br />3. Ti ne pnasea approacri aiiows the Applicant to mine and reclaim the safest area possible <br />prior to starting a more difficult phase. <br />4. The Applicant intends to remove limestone wherever practicable. <br />The priority in achieving these two objectives is safety. This means safety in the short term for <br />the workers performing the mining and reclamation and safety in the long term for the <br />surrounding community during and after work is completed. The Applicant plans to reclaim the <br />site in a way that reduces the visual impact of the mine to the greater Colorado Springs area. <br />However, this will not take a priority over safety. <br />This Plan removes the materials high up on the western slope to achieve a stable final highwall <br />configuration. There will be a considerable amount of excess materials generated in creating <br />the stable slope, approximately .3.0 million loose cubic yards. Mining limestone to be processed <br />on site and sold reduces this volume and creates areas for excess material disposal, but <br />additional excess material could be consumed in reclaiming other parts of the mine site, away <br />from the stable slope. The proposed final reclamation is the topography shown in Exhibits F -5 <br />and F -6. <br />Geologic Uncertainties and Mine Plan Review <br />The geotechnical information that was used to generate the Plan is based on past reports and <br />recent field observations. Because of the past landslides and current instability of much of the <br />western highwall, it was impossible to safely access all the areas during site . The <br />Applicant will continuously monitor the entire area during the mine and reclamation operations <br />and make adjustments to the plan should adverse geological conditions force a change in the <br />Plan. The Plan is sequenced to begin working in the areas currently considered the most stable <br />and slowly progress toward the more unstable areas by using the mined materials to help <br />stabilize the slope ahead of the drilling and blasting operations. <br />The mine plan is designed to identify the North Rampart Fault that separates the Pikes Peak <br />granite deposit to the west from the sedimentary deposits (Sawatch sandstone, Manitou <br />Pikeview Quarry Exhibit D <br />2014 (Revision) <br />Technical Revision — February 28, 2014 D -2 <br />