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Transit Mix Concrete Co. <br /> Table D-7 Mining and Reclamation Schedule <br /> Mining Reclamation <br /> Phase Min#of Max#of Min #of Max# <br /> Years Years Years of Years <br /> Phase 1 2 - 5 1 - 2 <br /> Phase II 2 - 3 1 - 2 <br /> Phase III 6 - 8 1 - 2 <br /> Phase IV 7 - 10 1 - 2 <br /> Phase V 13 - 18 1 - 2 <br /> Phase VI 0 - 0 5 - 10 <br /> Total 30 - 44 10 - 20 <br /> (f) Description and Thickness of Overburden, Deposit, and Underlying Stratum <br /> Regional Geologic Setting <br /> The proposed Quarry is located on the Rocky Mountain Front Range (the Front Range). This <br /> north-south orientated mountain chain represents the eastern boundary of the southern Rocky <br /> Mountains that extends from Casper, Wyoming in the north to Pueblo, Colorado in the south. The <br /> Front Range includes the highest peaks along the eastern edge of the Rocky Mountains with <br /> several peaks higher than 10,000 feet above sea level. The Rocky Mountain Range was formed <br /> 80 million (MA) to 55 MA years ago during the Laramide orogeny, in which the western Kula and <br /> Farallon Plates slid underneath the eastern North American plate. The angle of subduction was <br /> shallow, with upliftment resulting in a broad belt of mountains running down western North <br /> America. The Laramide orogeny abruptly terminates in the east along the Front Range where the <br /> Ranch property is situated. <br /> The surface outcrop along the Front Range in the vicinity of the property range from relatively old <br /> basement rock of early to middle Proterozoic age (ca. 550-1,600 MA) to younger sediments of <br /> Cretaceous-age (ca. 65-145 MA). Regional geologic maps available from the United States <br /> Geological Survey (USGS) indicate the basement rock to comprise mostly igneous and/or <br /> metamorphosed granodiorite and Pikes Peak granite (Moore et al., 2002, Scott et al., 1976, <br /> Rowley et al., 2003). These basement rocks are the target aggregate resource for surface mining <br /> on the property. The younger sedimentary rocks are located on the eastern foothills of the Front <br /> Range and comprise mostly sandstones and shales. A series of north-south oriented thrust faults <br /> separates the elevated basement rocks in the west from the lower-elevation sedimentary units to <br /> the east of the Front Range. These thrust faults are interpreted to exhibit a listric (curved) type <br /> orientation with high angles encountered within the mining pits followed by gradual shallowing of <br /> dip to around 35 degrees dip at lower elevations east of the proposed mining area. <br /> Hitch Rack Ranch Quarry Permit Application <br /> March 20,2018 D-18 <br />