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<br />A. Methods of Mining: <br /> <br />EXHIBIT D . MINING PLAN <br />On the portion of the west paccel which will be mined, there are no trees or shrubs which <br />must be stripped. The topsoil and overburden will be excavated and relocated to form a <br />roadway/screening mound along the periphery of the parcel. A dozer and scraper capable <br />of excavating sand and gravel to a 25 foot depth will be utilized. The mined material will <br />be stockpiled and allowed to drain, since most of the material will be taken from below the <br />groundwater table. <br />B. Earthmoving: <br />Scrapers can be used to excavate and relocate topsoil and overburden. Dozers will be used <br />to shape the screening mounds and to move some mined sand and gravel to temporary <br />storage locations. A dozer and scraper capable of excavating [o a depth of 25 feet will be <br />used to do the actual mining of sand and gravel. Motorgraders will be used to build and <br />maintain access roads. ~ <br />~~ ~~~_ . <br />d:,~ <br />~~ <br />C. Water Management: <br />The plan is to construct a temporary earth dike to impound ater on the same side as the <br />neighboring wells that Weld County has been pumping down. The County would be mining <br />small area at a time (minor disturbance) and only pumping what we need to the operator. A <br />construction trench may be needed along with the dike to supply additional water to the well <br />sites. See EXHIBIT C for more information on surface and groundwater management. <br />D. Sizes of Areas: <br />(i) Major Disturbance - of the three parcels, only the west parcel will have excavation <br />operation. [t is anticipated that of the approximately 45 acres, which can potentially be <br />mined, five acres at a time will have topsoil excavated and that sand and gravel be mined and <br />stored. <br />