2019-04-03_REVISION - M2007087 - Laserfiche WebLink

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P.O. BOX 700 HENDERSON, CO 80640 ALBERT FREI & SONS (303) 289-1837 (303) 289-2865 FAX Priola Pit - M-2007-087 March 25, 2019 Request for Bond Reduction . This to reevaluate and reduce the current $77 , 000 bond to better reflect the cost to reclaim the site at this time . The current bond was done when backfilling was still required and included loading and hauling, compacting and final grading for backfill material to finish filling the site that is no longer needed. APPROVED SEED MIX Species Lbs. PLS/Acre Thickspike Wheatgrass 9.00 Western Wheatgrass 1.88 Intermediate Wheatgrass 1.38 Slender Wheatgrass 1.48 Sideoats Grama 1.13 Blue Grama 0.56 Buffalo Grass 3 .13 Little Bluestem 0.56 Oats 1.25 TOTAL 12 .50 RECLAMATION COSTS The following Reclamation Cost estimate is based on current condition at the mine . And that all backfilling, and compacting is complete and the side slopes have been graded 3h to lv or less on all but 210 feet that is sloped 2h to lv. Final grading on this unfinished slope area will require moving 3 . 13 cu-yds/lft or 645 cubic yards (slope height 13 feet average) . Of the 13 . 0 acres disturbed on the mine 2 . 35 acres is sloped and recoiled and 0 . 88 acres has been seeded. The attached Reclamation Cost estimate is based on having: STAGE TOTAL SOIL DEPTH NEEDING RESOILING 1 0.65 AC 6.0I1 REVEGETATI❑N AREA 1 2. 1 2 AC REMEDIAL SLOPING 21 ❑ FT RES❑IL a� 6.o" B,591 CUBIC YARDS CUT/FILL SLOPING 3: 1 645 CUBIC YARDS SECONDARY REVEGETATI❑N 250/0 Equipment used is a scraper team of 3 - Cat 631D scrapers, a water truck, a Cat D8N dozer for recoiling. A Cat 140G motor grader to final grade the seed bed. A Cat D8R is used to do the minor slope grading. The mobilization haul distance is 2 . 0 miles at an average speed of 35 mph. The revegetation cost figure used includes fertilizer, grass seed, labor and drilling costs .