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MINING PLAN • . EXHIBIT D (coNr.l <br />This land is presently used as rangeland and for mining clay <br />and stone. The area covered by this permit application was <br />picked because of the quality of the material available and its <br />low wildlife and agricultural value. There are no surface waters <br />or man made structures on the site. Grazing is limited on this <br />site because the soil type and lack of water limits the growth <br />potential of the grasses on the site. The site is covered with <br />patches of Juniper, Scrub Oak and Pinon trees as well. A parcel <br />of land near the existing mining operations is designated PRE-LAW <br />DISTURBANCE area. This is where mining took place between 1958 <br />and 1977 when M.L.R.B. Permit M-77-326 was issued. Most of this <br />area will remained undisturbed over the life of the mine. The <br />area permitted by Adience is not part of this new mine, although <br />our permit surrounds Adience's mine. <br />The entrance road is an existing 20 feet wide road that <br />enters the site from Siloam Road. The location of the road as <br />shown on the map exhibits supplied with this application and will <br />remain for the landowners use when mining is complete. Periodic <br />grading is necessary to keep the road in good condition. There <br />are numerous trails on the property. These trails are used for <br />access to the site and will be used as surface rock collection <br />activities take place. We have found that if these trails are <br />not used for one growing season the grasses take over and it <br />becomes difficult to distinguish from surrounding areas. The <br />entrance road is an existing road that supplies access to the <br />adjoining clay mine operated by Adience, Inc. The road is also <br />used by the landowner for access to areas north and east of the <br />site. As mining progresses and the road is disturbed or removed, <br />it will be reworked to allow access to property north of the mine <br />site. <br />GEOLOGIC SETTING <br />The sandstone material to be mined is a deposit of lower <br />Cretaceous aged, Dakota Sandstone ~ Purgatoire Formation (Kdp). <br />This particular site is located north of Owl Canyon and east of <br />Siloam Road. According to the U.S.G.S., the sandstone deposit <br />has a thickness up to 200 feet. The sandstone deposit on this <br />site is on a gently sloping mesa typical to the area in western <br />Pueblo County. The usable upper part of the deposit is strati- <br />fied and varies overall 15 feet to 20 feet of thickness. The <br />strata varies from 4 inches to 24 inches in thickness. In <br />places, the sandstone has an extremely thin layer of topsoil- <br />6 <br />