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C-12 <br /> (d) THICKNESS OF DEPOSIT TO BE MINED <br /> Exploratory drilling completed to date indicates that the target sand horizon is on the order of 3 5-to 40 ft. thick,on <br /> average. It is CSC's intent to mine a depth horizon sufficient to justify the proposed Keenesburg Project economic <br /> objectives while leaving a pit-floor sub-horizon comprised of sand, as well, in order to accommodate infiltration <br /> and dispersal of both precipitation moisture and process-related residual moisture content in the fines slurry, both <br /> during and subsequent to the operational life-of-mine. Accordingly, the anticipated maximum mining depth will <br /> be limited to approximately 25-ft.below the existing ground surface for both the main pit area and the fines recovery <br /> pit, respectively. <br /> (e) MAJOR COMPONENTS OF MINING OPERATION <br /> The major components of the Keenesburg Project include the open-cut mine pit excavation and the associated(wet <br /> and dry)processing plant facility(with attendant fines recovery pit), in addition to other appurtenant infrastructure <br /> features, as elsewhere depicted on Exhibit E-1: Mine Map, and as further described below. <br /> Access into the so-defined Permit Area will be via a to-be-constructed roadway (hereafter referred to as the <br /> perimeter"loadout loop")which will extend easterly off the main site access road at a point approximately 500-ft. <br /> northeast of the gated entry, and then follow the Permit Area perimeter prior to returning to the main site access <br /> road at a point approximately 100-ft. northeast of the gated entry. The loadout loop includes a truck scale proximal <br /> to the product storage area(which is near the end of the loop;empty trucks will enter on the north side of the Permit <br /> Area and proceed around to the scale area for product loading; and, once loaded, will proceed forward (one-way, <br /> clockwise traffic configuration)to the main site access road for subsequent exit onto Weld County Road 59. <br /> No improvements to either Weld County Road 59 or the ranch service road are planned. Further to this,the existing <br /> roadside pull-out along the east side of Weld County Road 59 (an approximately 350-ft2 gravel-surfaced area)will <br /> be maintained in its existing configuration, in order to facilitate ingress and egress through the gated entrance. <br /> While no improvements to the area are planned, CSC will carry out routine maintenance (i.e., grading, dust <br /> suppression, etc.)on both the existing road and pull-out area, as necessary. <br /> Keenesburg Project—Limited Impact 110 Application_May 24,2019 <br />