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DNR COLORADO <br /> CO i Division of Reclamation, <br /> ..• Mining and Safety <br /> Department of Natursi Resources <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> Rule 1.1(24)/1.1(20) "Inert Material" means non-water-soluble and non-putrescible solids <br /> together with such minor amounts and types of other materials, unless such materials are acid <br /> or toxic producing, as will not significantly affect the inert nature of such solids. The term <br /> includes, but is not limited to, earth, sand, gravel, rock, concrete which has been in a hardened <br /> state for at least sixty days, masonry, asphalt paving fragments,and other inert solids. <br /> **Rebar or other protruding reinforcements must be removed prior to placement. All material <br /> must be buried to a minimum of 3 feet below final surface grade. <br /> 1. General Description of material to be imported: Clean soil, inert construction materials, <br /> that meet the definition of inert materials in the DRMS Construction Materials Rules <br /> 2. Approximate volume of inert material to be backfilled: 2-3 million cubic yards <br /> 3. Estimated dates of commencement: June 1, 2020 and completion: December 31, 2030 <br /> 4. Use/purpose of imported material: Fill will be imported to regrade and reclaim mining <br /> excavations, and to create usable land for beneficial post mining land use. <br /> 5. A general engineering plan stating how the material will be placed and stabilized in a manner <br /> to avoid unacceptable settling and voids. Materials will be screened for acceptability prior <br /> acceptance. Larger pieces will be reduced to a smaller size, prior to placement to <br /> mitigate voids and settling. Materials will be placed in layers to mitigate voids and settling. <br /> 0 Enclosed is a map showing the proposed location of the inert material. <br /> 3.1.5(9)(c) -Affidavit <br /> I Fred Marvel, P.E. of Brannan Sand and Gravel Company, L.L.C. hereby <br /> certify that only clean and inert material will be imported at . <br /> All material will adhere to the Division's definition of Inert Material as defined in Rule <br /> 1.1(24)/1.1(20). <br /> 1. <br /> Signature: 12( ".�\(7 Date: /7/0 2© 7_0 <br /> -2- <br />