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STATE OF COLORADO Land Reclamation Board Department of Natural Resources 1845 Sherman Street Denver, Colorado 80203 ADENDUM T0: Specification Aggregates, Inc. Application for Conversion of Existing Permit to Permit £or Life of tNe Mine OVERBURDEN: In paragraph 10. h. of the Application, the narration foi~ Exhibit B paragraphs e. and g., narration for Exhibit C, and in a portion of Exhibit N references are made regarding the overburden of the affected area. Overburden, as it applies to thus mining operation and in accordance its definitior in Title'~'34, Article 32 Section 103 paragraph (11) will almost in its entirety be consumed in the manufacture of constrL.ction materials. Consequently, there is in essence vertually ro overburden of consequence which is or will become a factor in this mining operation. The average depth of material lying above the crystalline rock formation is less than 12 inches. There are a few isolated pockets of soil, which consitutes a small part of the overburden, that are being removed and stock piled for future use as top cn;l_ Generally these areas provide less thar. two feet of material suitable for removal. This soil is intermixed, in earring quantities, with decomposed crystalline rock. It is hoped that perhaps a 1000 tons of this material can be accumulated during the life of the mine. DEPTH AND THICKNESS OF THE ORE BODY: The depth and thickness of the ore body "Precambrion Crv=_~aline R~ k" is infinitei but for the purpose of this mining operation the reclamation plan proposes to reduce the existing surface levation to a nomina evation of approximatel 6500 ~ in the extraction area. This wi provide a maximum thickness of about 400 feet and a minimum thickness of 20 feet of materi to be extracted_ Paragraphs 10. ., 10. j., 11. a. ("Exhibit A", "Exhibit A-1" and "Exhibit A-2") and the narration for marked "Exhibit H-1", of the application, each allude to the depth and thickness of the ore body. PRESENT VEGETATION MAPS: A vegetation map marked "Exhibit N-1" is submitted herewith in- dicating the predominate vegetation species. This map ha.s been prepared with assistance and information provided by the United States Department of Agriculture, Soil Conservation Service. Ph AND CONDUCTIVITY OF SOIL: Also provided by the Soil Conservation Service is the information that the soils within the affected area have a Ph of 6.1 to 7.8 and Conductivity of 1 ~ ' ~ /_~ i