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Page 3 of 5 <br />Connell Carr Pit <br />Adequacy Review <br />Division a copy of the Lone Tree Creek temporary crossing permit prior to constructing the <br />crossing. <br />12. The Applicant proposes setbacks from the mine pit top of slope to the proposed permit <br />boundary or man -made structures not owned by the Applicant of 25 feet or greater with <br />setbacks in the northern portions of the permit area of as much as 50 feet. The Division <br />recommends a minimum setback from the permit boundary and man -made structures of 50 <br />feet for simplicity and consistency. Please consider increasing the minimum setback distance <br />to 50 feet and update Exhibit C - Mining Plan Map accordingly. <br />13. The Applicant proposes setbacks from near vertical mining excavation to the permit boundary <br />will be a minimum of twice the adjacent pit depth to mitigate stability risks. The Division <br />recommends a minimum ratio of three times the pit depth from the top of the mining <br />excavation to the permit boundary. Please consider increasing the minimum setback distance <br />from the vertical mining excavation to the permit boundary and update Exhibit C - Mining <br />Plan Map accordingly. <br />14. The Applicant proposes a minimum backfilled side slope of 2H:1V. Rule 3.1.5(7) states <br />maximum slopes shall be compatible with the configuration of surrounding conditions and <br />selected land use. The Applicant selected a post -mine land use of rangeland. The Division <br />recommends a minimum reclaimed slope of 3H:1V, which is more appropriate for rangeland <br />reclamation. <br />6.4.5 Exhibit E - Reclamation Plan <br />15. The Applicant states pit side slopes will be backfilled and graded to 3H:1V or shallower where <br />possible and no slopes will be reclaimed any steeper than 2H:1V. As explained in Question <br />#14, please commit to a minimum reclaimed slope of 3H:1V and update the Exhibit F - <br />Reclamation Plan Map accordingly. <br />16. The Applicant is proposing to use the seed mixture currently approved for the adjacent <br />Tucker Pit (M- 1980 -002). Due to the age and lack of diversity of the seed mixture, the <br />Division recommends the Applicant contact the National Resource Conservation Service <br />(NRCS) for a recommended rangeland seed mixture for the site. <br />6.4.12 Exhibit L - Reclamation Costs <br />17. The Division will estimate the cost to reclaim the site based on the information submitted <br />once the Applicant addresses the concerns noted in this letter. <br />6.4.14 Exhibit N - Source of Legal Right to Enter <br />18. The Applicant states in the permit application, exhibits and Exhibit 0 the owner of the <br />affected land and the owners of substance to be mined is Terry Grazing Association. The <br />Sand and Gravel lease document states the land is owned by JRT Limited Partnership and <br />