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-. ~ ° O O <br />Mr. 1~1ark Loye <br />April 8, 1983 <br />Page 2 <br />4. The attached sheet 2 of 3 shows the location of the interior haul <br />road which will be reclaimed at the end of the mining operation. <br />5. Noted on sheet 2 of 3 attached. <br />6. All gravel stockpiles will be within the plant site area. These will be <br />kept to a minimum and are considered "working supply." <br />Exhibit D <br />1. Refer to Exhibit E, No. 4. <br />2. Each of the numbered areas on the mining plan, sheet 2 of 3 is approxi- <br />mately 5 acres. five acres will be reclaimed each year. In the reclama- <br />tion cost exhibit L, the topsoiling figure should be $8,034/acre for <br />the first reclamation year and $6,453 each year thereafter. <br />3. Blasting will not be required. The sandstone is weathered to the <br />point of being a sandy, non-cemented soil material. Equipment to be <br />used will be Ftont-end loaders, 25-ton dump trucks and graders. <br />4. The working face slope of the active excavation will be about 2:1. <br />5. The 25' cut is of highly weathered sandy material originating from <br />arkosic sandstone. This material is easily excavated with front-end <br />loaders without blasting or any form of loosening. The intent is to <br />do the operation in one cut. <br />6. The arkosic sandstone in the Black Forest area is 200-300 feet thick <br />and the total sandstone formation is over 1000' thick. The highly weathered <br />(easily excavated) sandy material is expected to be 40 feet deep to competent <br />material. <br />7. The triangular area to the southeast of Vollmer Road will not be <br />used in the mining operation. (See sheet 2 of 3) <br />8. All access to the pit will be via the haul road from the Black Forest <br />Road (sheet 2 of 3). <br />9. During the mining operation, riprap protection as well as a vegetated <br />topsoil berm could be used on the western side of the permit area to <br />protect the intermittent drainage Swale although the undisturbed area <br />east of the Swale will be a natural berm between the pit and Swale. <br />As noted in Exhibit I, p. I-2 and Exhibit G, p. G-2, these soils have <br />low erosion hazard due to water (this interpretation is based on bare <br />soil). Based on information provided by the SCS in their E1 Paso County <br />