Laserfiche WebLink
_ SOILS INFORMATION <br /> Exhibit I <br /> Soils Information <br /> Exhibit C-IC is the soils map for this site. As the map shows, there is quite a variety of <br /> soils present on the upper portions of Table Mountain, but within the area to be affected the soils <br /> are quite uniform and composed of only two primary series. <br /> The origin of the soils on the site is complex. Much of the soil is derived from the dark <br /> quartzitic material, but a relatively high clay content in one of the soils found on the site is rather <br /> difficult to explain as quartzite usually weathers to more sandy soils rather than clays. It is possible <br /> that the clays were derived from volcanic action including hot springs and possibly the intrusion of <br /> small rhyolite dikes. Nearby and surrounding the Table Mountain area are beds of gypsum that <br /> clearly indicates a past history of mild volcanic activity and/or hot springs. Some rather small <br /> outcrops of a rhyolite can be found in a few places. These mechanisms might explain the clay <br /> content of some of the soils in an area dominated by quartzite. The clays could also come from <br /> remnants of soils that were once more common and were found on top of the quartzite but have <br /> largely been removed by erosion. Typically, the formation above the Dakota Sandstone is the <br /> Pierre Shale which, if it was present, could have produced a clay dominated soil. The latter <br /> explanation appears to be the most likely explanation for the presence and distribution of clay <br /> dominated soils on this site. <br /> Site Soils <br /> At the end of this narrative are a series of descriptive summaries that define many of the <br /> characteristics of the soils found on this site. These descriptions follow the units shown on the soils <br /> map (Exhibit C-IC). Also included with these descriptions are diagrammatic figures that show the <br /> typical cross-section of these soils. The descriptions also provide information on typical plant <br /> species that occur on each soil, production rates, and various aspects regarding the utility of the <br /> vegetation associated with each soil. Thus, this exhibit provides information not only on the soils, <br /> but also relevant to the vegetation of the site. These data were derived from the recently completed <br /> "Soil Survey of Fremont County Area, Colorado" published by the NRCS of the USDA. <br /> Soil Salvage <br /> The diagrammatic figures for each of the three primary soil series that occur in this area <br /> indicate information pertaining to the quality of the soil at various depths in the typical soil horizon. <br /> Each of those diagrams indicates the typical safe soil salvage depth. It is important to note that <br /> these are the typical conditions. At individual sites the characteristics may vary somewhat from the <br /> typical condition. In some instances soils belonging to other series may also be found in small <br /> pockets. Therefore, when saving soils for use in reclamation good judgement always needs to be <br /> exercised as to what depth soil salvage should stop. <br /> Table Mountain Quarry - Castle Concrete Company Exhibit I Page 1-1 <br />