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Martin Julie Mikulas <br /> Marietta Regional Land Manager <br /> June 14,2018 <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 /> 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 a: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 anc 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 'ssue could have been managed with weed control and <br /> management once the seed had establish bu: 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 1 1/2"diameter: $11,000.00 <br /> Claystone Motor Grading to +/-0.1: $15,000.00 <br /> Upland seed $18,612.40 <br /> Transitional seed $9,306.20 <br /> Equipment.Tractor/drill/broadcaster $12,000.00(1) <br /> Operator/labor $8,000.00(2) <br /> Total $47,918.60 <br /> (1)equipment cost-$150.00 per hour x 40 hours x 2 applications <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 />