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.rte, '+~- <br /> <br />by NRCS. Since it will be graded essentially flat the finished pit floor has the potential for <br />wide dispersal and absorption of moisture from meteoric rairifall or runoff from sideslopes. <br />No significant surface ponding is anticipated in the finished pir floor bench. <br />12. Colorado and Federal law requires on-site stored liquid petroleum-based fuels, lubricants, <br />and coolants to be contained by an enclosure with an impermeable liner and capacity for <br />containing at least the fluid stored plus an appropriate reserve. These requirements must be <br />employed at this site in the unlikely event of their storage there. <br />13. All sloped areas disturbed and generated by pit activity, either historic or current, shall be <br />topsoiled to the extent that soil is available on site. Finish graded slopes such as the east end <br />of the south headwall shall be progressively topsoiled directly from currently stripped exc <br />areas, before directing the balance of topsoil to west boundary stockpiles for final <br />reclamation use. <br />Exhibit E -Reclamation Plan <br />14. Overburden is not planned for placement into the finished pit floor, except as needed for <br />minor ongoing progressive leveling/shaping of the excavated pit floor for smooth work areas. <br />In the case of premature pit closure, essentially in the Initial Phase operation, overburden <br />stockpiles are to be disposed of in the adjacent (north) headwall slope reduction operations. <br />We believe this is covered in the Reclamatron Costs - Exhjbrt L in the Item ®cost for <br />"headwall slope reduction dozing" where any excess stockpiled overburden is dosed down <br />over the adjacent headwall for disposal in the slope reduction. Exhibit E has been modified <br />for this clarification. <br />15. To the best of our knowledge there is no local example of a re-vegetated pit floor comprised <br />primarily of naturally occurring gravelly soils, somewhat mixed in places with clay. Due to <br />an expanding mazket for an additional commodity (clayey soils) however, the plan for <br />removal and disposal of this gravely/clay contamination in the spit floor has been generated to <br />allow for extraction of the clean clayey soil. Your suggestion xo sample and test an example <br />of the final pit floor material is a valid one and is currently be done in the completed eastern <br />portions of the site that are now utilized as stockpile areas. Another alternative, if <br />determined to be suitable, would be to utilize some of the wafted overburden to that effect. <br />Obviously this also should be sampled and tested to dete}tnine the appropriate re-veg <br />methods. <br />With the techniques of adding appropriate fertilizers and 'mulch we are confident that <br />adequate re-vegetation can be accomplished in the pit floors clay soils. In any case, we <br />believe that per Rule 3.1.5 ... <br />... (1) the final grading creates a topography appropriate to livestock grazing range; <br />... (3) that the flat grading of the pit floor, the surface water retainment berms, and re- <br />vegetation of bank slopes adequately control erosion and creates no stability hazard for <br />adjacent lands; and, <br />... (7) maximum 2:1 slopes are compatible with surrounding naturally occurring terrain, in <br />particular with the slopes of the whole regional bench of which~this site is only a small part. <br />16. If generated at all, the disposal terrace out-slope shall be to~soiled the same as the back- <br />filled pit wall slopes. <br />l7. The slopes selected for reclamation for the curzent 111 Permit were not necessarily the <br />maximum allowable for that site. Recent discussions between the operator and the <br />landowner indicate a preference for maximum retrieval of available gravel resources at an <br />acceptable cost, and more importantly, for maximum available use area of the remaining <br />'i <br />