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4. With the apparent small volume of available growth medium (finer soils capable of supporting <br />vegetative growth) documented, please revise the mine plan and reclamation plan text to commit <br />to salvage and replacement of all available growth medium. Include stockpile locations in text <br />and on the mine plan map. <br />5. Per Rule 6.3.3, please specify the depth to be mined (into the hill), indicate the number and <br />configuration of the bench system (width x height) to be utilized, indicate the stability of these <br />working bench faces and what measures will be taken to prevent the slope from raveling upward <br />and off the permit area. <br />6. Per Rule 6.3.3(g), please specify the dimensions of existing roads proposed for access and <br />indicate if they will be improved. If they are to be improved, or for any new road to be <br />constructed, the construction and reclamation specifications must be included in the permit area, <br />via an amendment to the application. <br />7. Per Rule 6.3.3(h) please specify how much water will be utilized for the operation. Please also <br />see the enclosed comments from the Office of the State Engineer regarding the proposed water <br />usage. <br />8. Per Rule 6.3.3(i) please describe any sediment control and/or stormwater runoff controls that will <br />be installed to prevent off-site impact. <br />9. Per Rule 6.3.3(1), please describe what measures will be taken to minimize disturbance to the <br />hydrologic balance, prevent off-site damage, and provide for a stable configuration for the <br />proposed future land use. <br />Exhibit D -Reclamation Plan <br />10. Per Rule 6.3.4(1)(a) please provide timing specifics for when reclamation begins. Include details <br />if reclamation is to be contemporaneous with excavation such as a phased plan. <br />11. Per Rule 6.3.4(1)(b) please provide an engineer's demonstration that the proposed final slopes <br />are stable to a safety factor of 2 or reduce the final slope configuration accordingly. This <br />demonstration must include demonstration of stability for the slopes above the excavation, as <br />they would be affected by the removal of the toe of the slope without buttressing or other means <br />of stabilization proposed. <br />12. Per Rule 6.3.4(1)(c)(i) please specify how and to what depth growth medium will be replaced to <br />best improve the chances for successful revegetation. <br />13. Per Rule 6.3.4(1)(c)(ii) please specify at what point in the mining/reclamation process <br />revegetation will begin. <br />14. Given the limited amount of growth medium apparently available for reclamation and the dry, <br />rocky nature of the proposed fill slopes, DMG recommends that the seed mix be revised to <br />include several dryland shrub species such as Wyoming big sagebrush, antelope bitterbrush, <br />mountain mahogany, Stansbury cliffrose, and rubber rabbitbrush. The seed mix species <br />percentages should be revised accordingly, depending on the number of shrub species and <br />seeds per pound that are added to the mix. The application rate should not exceed 80 seeds per <br />square foot for the broadcast application. . <br />