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Martin <br />Marietta <br />June 14, 2018 <br />M-2011-001 S <br />COMPLIED! <br />NO PRIOR VIOLATIONS! <br />psh, mac <br />Mr. Peter Hays <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RE: Reclamation Responsibility Release, M-2011-001, Iverson Pit <br />Dear Mr. Hays: <br />Julie Mikulas <br />ial Land Manager <br />REcellfie <br />l) <br />fs/ 1(N If polo <br />Me <br />� V <br />On behalf of Martin Marietta Materials, Inc., please accept this letter as our request for release of <br />reclamation responsibilities for the Iverson Mine. We had done a preliminary seeding in the fall, which <br />was starting to sprout when we re -seeded the property again just this last April. The seed mix we used is <br />attached. We used a dry land pasture blend at approximately 800lbs of seed for cover. We also broadcast <br />and hand seeded the transitional zones along the water's edge. The seed on site was starting to take, <br />however with the wet conditions the weeds were growing taller than the grass shoots. <br />The property owner decided he didn't want to look at the weeds and went out and tilled back up <br />approximately half of the site with a disc or a harrow without first discussing it with us. In doing so, it has <br />turned up larger rocks from below surface and mixed the overburden and topsoil layers. This process has <br />also turned the seed over limiting its viability, we typically don't do weed control during the first season <br />to allow the grass time to establish. This issue could have been managed with weed control and <br />management once the seed had establish but now that he has decided to farm the ground, we cannot <br />continue to re -seed every time he sees weeds. Please see the attached photos. <br />Between the additional finish work and the two seeding applications the approximate cost breakdown is <br />as follows. <br />Claystone Rock Racking for removal of rocks greater 11/2" diameter: $11,000.00 <br />Claystone Motor Grading to +/- 0.1: <br />$15,000.00 <br />Upland seed <br />$18,612.40 <br />Transitional seed <br />$9,306.20 <br />Equipment. Tractor/drill/broadcaster <br />$12,000.00(1) <br />Operator/labor <br />$8,000.00(2) <br />Total <br />$47,918.60 <br />(1) equipment cost - $150.00 per hour x 40 hours x 2 appllcat-ons <br />(2) operator/labor - $50.00 per hour x 2 employees x 40 hours x 2 applications <br />Rocky Mountain Division — Northern Office <br />1800 N Taft Hill Road, Fort Collins, CO 80534 <br />julie.mikulas@martinmarietta.com <br />www.martinmarietta-com <br />