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To: 'DRMS Den Page 3 of 4 2018-06-27 22:20;20 (GMT) 13032008630 From: Ben Langenfeld <br />backfill, and thus necessitate leaving a groundwater lake in place. This groundwater lake is <br />anticipated to be roughly 10 acres in size. Map E-1 shows this. <br />Additional bond will be needed to cover the dewatering of a further 6 acres of pit, since the <br />Phase 3 mining area will have to dewater both the backfillable area and the eventual lake area. <br />No additional bonding will be needed for topsoiling or revegetation, as the bond from Phases I <br />and 2 covers 20.5 acres, which is more than sufficient to encompass the above lake level areas of <br />Phase 3. <br />Table I shows the bond calculations for all of the phases. Phases 1 and 2 have been combined, as <br />the current activity on site has disturbed areas in both phases. Phase 3 is calculated separately as <br />the additional dewatering cost that will be needed. <br />Table 1 — Worst Case Reclamation Costs <br />In addition to posting the additional bond needed for Phase 3 at the time it begins, United will <br />provide DRMS with the proof of long-term water availability to cover the lake to be left behind <br />in reclamation. Mining activity will be limited, until Phase 3, to 20.5 acres of total disturbance, <br />and 10 acres of total active pit excavated. The total overall disturbance will 35.7 acres, including <br />all mining and stockpile areas. The phasing shown on the Map C-2 that was submitted in the TR - <br />1 application is the new phasing layout. <br />The current bond for this site is $423,680. An additional $97,869 of bond will need to be posted. <br />Deftaque Sand and Gravel 2 �wi:pF4a1/Iu[it,, - "I JCC, <br />