2018-10-25_PERMIT FILE - M2018054 (2)

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of 21,740 cubic yards of topsoil will be required. Please explain andlor correct this discrepancy. Response: There are 4,840 sq. yds. in one acre. 4,840 sq. yds. X 0.1667 — 806.8 cyds. of plant growth material per acre. 26.95 acres X 806.8 cyds. of plant growth materials = 21,702.9 cyds. of plant growth material needed for reclamation. Available plant growth material equals approximately 6,454. Approximately 21,703 cyds. of plant growth material is needed for reclamation and 6,454 cyds. of plant growth material is available. Therefore, 15,249 cyds. of plant growth material must either be imported and/or developed on site. Sources of plant growth material may not be available locally. However, if there is an opportunity to import material from the construction site, SEMA will notify the DRMS and get DRMS direction as to what information the DRMS requires in order to authorize SEMA to import plant growth material to the proposed borrow site. We have revised the application pages to reflect this correction. 4) Under section (b), the applicant estimates approximately 5,100 cubic yards of topsoil may need to be imported for reclamation. However, the Division estimates a total of 15,287 cubic yards of topsoil may need to be imported for reclamation, given the estimated availability of'6,453 cubic yards of topsoil on site and the proposed replacement depth of 6 inches. Please explain andfor correct the discrepancy. Response: Approximately 21,703 cyds. of plant growth material is needed for reclamation and 6,454 cyds. of plant growth material is available. Therefore, 15,249 cyds. of plant growth material must either be imported and/or developed on site. We have revised the application pages to reflect this correction. 5) Under section (d), the applicant estimates a maximum mining depth of 20 feet. However, the reclamation plan map submitted indicates the southern pit area may be as deep as 38 feet (5,570 feet elevation - 5,532 feet elevation), and the northern pit area may also be as deep as 38 feet (5, 580.feet elevation — 5,542 feet elevation). Please explain andlor correct this discrepancy. Response: You are correct in your statement of the maximum depth. We were attempting to give an approximate average maximum depth given the variability in the proposed depth of mining. 6) Please specify the proposed mining slope for pit walls.