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_ _ A <br /> ILL-, <br /> o Transit Mix Concrete Co. <br /> granite gneiss. Drill cores taken at elevations below the Little Turkey Creek (up to 350 feet below <br /> the creek) have identified several diabase sills that were not observed north of the Little Turkey <br /> Creek. The diabase, together with the granitic basement rock, is considered good quality rock for <br /> aggregate stone. In the crushed stone aggregate business, granite is used as a generic term that <br /> includes igneous rock such as diabase and granodiorite. <br /> Surface Weathering <br /> The depth of surface weathering in the creek bed valley floors is up to 15 feet from surface. On <br /> the intervening ridges the surface weathering depth varies from 0 to 5 feet from surface. The <br /> surface weathered zone comprises topsoil and unconsolidated granitic rock below the topsoil that <br /> is also referred to as overburden material. <br /> Structure <br /> Surface mapping, aerial photo interpretations and exploration drilling has identified two major fault <br /> orientations.As indicated in Figure C-3 Geology Plan, there is a northeast trending series of faults <br /> that juxtaposes the granitic basement rock with the younger sandstones in the southeast. Another <br /> series of southeast trending faults follow the Little Turkey Creek drainage. The zone of shearing <br /> below the creek bed is observed to be wider and more varied than the northeast trending faults. <br /> All faulting is observed to be high angle thrusts or normal-type displacements. The exact relative <br /> displacement across these faults cannot be determined from the exploration data. <br /> The only fault that is will be exposed in the proposed mining is the west fault. The strike and dip <br /> of the west fault on the proposed pit, to be discussed in latter sections of the report, has been <br /> determined from exploration drilling, surface mapping and aerial photo interpretation. Figure C- <br /> 11 section B-B" illustrates an across-strike section though the west fault. In this location, the west <br /> fault zone was identified as a vertically orientated, narrow and tight fault zone. <br /> Aggregate Product Testing <br /> Five drill core samples taken from the 2014 drilling program were used to determine the suitability <br /> of the granitic basement rock for production of a sized aggregate stone product. The core samples <br /> were tested by CTL Thomson Laboratories located in Colorado Springs, CO. The sample results, <br /> listed in Table D-8 below, indicate the basement rock to be suitable material for a sized aggregate <br /> stone product. <br /> The Rock Mass Rating (RMR) evaluation completed by Norwest, concluded that the majority of <br /> basement rock mass was "Fair Quality to Good Quality" rock. However, pegmatite has been <br /> classified as Poor-Quality Rock due to its low compressive strength, Rock Quality Designation <br /> (RQD) value, and high discontinuity frequency relative to other major rock types and is therefore <br /> not desirable as a pit wall material. In contrast, diabase is the best quality rock encountered, due <br /> in large part, to the relatively high RQD value range of 87% to 96%. Granite is the most common <br /> rock type on the proposed site and is characterized as Good Quality rock. <br /> Hitch Rack Ranch Quarry Permit Application <br /> March 20,2018 D-21 <br />