2018-08-10_PERMIT FILE - M2017032

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MINING PLAN EXHIBIT D(CONT) Russian Olive trees have invaded the area . The Russian Olive trees will be removed during mining and any other trees outside the area to be disturbed will remain. Access to the site is via an existing driveway in the southwest corner of the property. The driveway will remain when mining ends as access to the industrial area . The landowners may also grade a road across the pre-law area to provide access from County Road 22W. A road will remain around the north side when mining ends in this area . GEOLOGIC SETTING The affected lands are located in the Arkansas Valley approxi- mately 2100 feet south of the river in a late Quaternary age, valley fill alluvial deposit . The sand and gravel encountered in the valley fill alluvium are a result of water erosion and redeposition of rock materials from the front range of the Rocky Mountains . The deposition of this material occurred during a time when the river was much larger than it is now. This type of material is typically found along the Arkansas River in Otero County to the Colorado state line . Along this section of the river, the deposit has an 80% sand, 20% rock ratio and averages 22 feet deep . SOILS AND O VERB URDEN See the soils and vegetation information in EXHIBITIM for detailed information regarding the soils on this site . The soil informa- tion is not site specific, it describes in general terms the nature of the soils found at this site prior to mining and was obtained from the USDA soil survey for Otero County. Approximately 12 . 68 acres of this site is covered by water and 17 . 36 acres is the old Plant Site area where there is no soil . The remaining 9 . 36 ac ± is the old overburden stockpile area along the north side of the lake . Overlying the gravel deposit on the stockpile area are piles of overburden and growth medium that were placed there before the original Reclamation Permit was issued in 1977 . Underlaying the stockpile area is a layer of overburden that varies from 1 to 4 feet and the sand and gravel , a portion of which will be mined. The topsoil\growth medium, when encountered in the stockpiles, will be saved for use then reclamation begins around the north end of the lake . 7 (revised 8/10/2018)