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NARRATIVE FOR EXHIBIT C--PREMfNING AND MINING PLAN MAP ([)nature, depth, and thickness of the deposit--this granite gneiss area is a massive bedrock outcrop of the basement rock complex of igneous and metamorphic rocks which und:rlie the entire Royai Gorge region. USGS Map 1-869 interpretation of this formation is as follows: "Migmatitic gneiss(precambrian), layered, chiefly feldspathic-biotite-quartz-plagiocl+~se gneiss with minor amounts of hornblende gneiss, calc-silicate gneiss, and garnetiferous and sillimantic varieties. Characterically gray, brownish-gray, or pinkish-tan medium-to-fine grained well foliated and well-layered rock. Compositional banding generally is parallel to foliati~~n and ranges in thickness form a fraction of an inch to several tens of feet. Variably migmatitic; salmon-pink to white stringers, veinlets, or small tabular masses of quartz-plagioclasc:- microcline-biotite pegmatite characteristically cut the gneiss or occur as subconformable layers." The depth of the deposit is undetermined. A conservative estimate of minable rock has been made of 50 million tons. There is no measurable soil on the surface prior to mining. All fines encountered during mining and produced during processing operations are sold as sub-base road material or fill. There is no waste material encountered during mining or produced during crushing operations. (ii) granite bedrock similar to that mined continues below the mining area to unknown depth. (g) The primary commodity being mined is the granite bedrock, processed to various grades/sizes of aggregate rock products. The secondary product is granite rip-rap, sized from 4" cobble up to 3-4' boulders. These various products aze used for a variety of end uses, including but not limited to erosion control and bank stabilization, road materials, concrete and construction aggregate, asphalt aggregate, road base, drainage and leach field rock, landscaping rock and boulders, and general grading and backtilling material. (h) Incidental materials that may be produced at this site include river derived gravels from localized pediment derived extraction areas within the affected land boundaries and g;annister, a silica rich metasediment which outcrops app. I(4 mile north of the main working area as shown on the mining plan map. This historic mining area dates back more than 80 years. Gannister is extracted now only in infrequent intervals for use in ceramic manufacturing. A small working area (less than'/z acre) is retained in this mining permit area to allow for future extraction should a demand for this product occur. No gannister production has been necessary for the bast several yeazs.