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September 18, 2017 <br /> Colorado Division of Reclamation, Mining and Safety <br /> Attn: Mr. Elliott Russell <br /> 1313 Sherman St, Rm. 215 <br /> Denver, Colorado 80203 <br /> RE: Notice and Request to import fill material from off-site, and on to the Grisenti Farms <br /> Gravel Pit, File No. M2001-005 <br /> Dear Mr. Russell: <br /> Transit Mix Concrete Co. (TMCC) on behalf of Continental Materials Corporation (CMC) <br /> proposes to import material from off-site for use in its reclamation program. The material will <br /> be used at the Grisenti Farms Gravel Pit, file number M2001-005. According to the provisions <br /> of Rule3.1.5 (9), "If an Operator intends to backfill inert structural fill generated outside the <br /> approved permit area, it is the Operator's responsibility to provide the Office notice of any <br /> proposed backfill activity not identified in the approved Reclamation Plan." <br /> • Bonding Adequacy: <br /> We believe the current bonding is adequate. Any imported waste construction material will <br /> be placed onto existing berms, adjacent to areas needing backfilled. This will reduce <br /> possible costs associated with importation of backfill. At present, we believe there is <br /> sufficient overburden on site to achieve the post mining land use. However, having <br /> additional material on site is considered a prudent position for TMCC. Having excess <br /> material on hand can enhance the final reclamation and will add little to the final cost for site <br /> reclamation, versus the cost of being short and having to import additional backfill. <br /> There are some small areas (around 2.0 acres)on the mine site that will need to be brought <br /> up to a slightly higher final grade in order to meet the required two feet above the prevailing <br /> ground water elevation. In addition, there are several small process water ponds which could <br /> be filled with imported waste material. The final grading process will spread the imported <br /> materials as needed. <br /> Given the proximity of ground water to the operation (Pond Two water will be in connection <br /> with ground water), no waste concrete material will be disposed on site. <br /> • Grisenti Farms Gravel Pit Notice: <br /> The Notice shall include, at a minimum, the following information, Rule 3.1.5(9): <br /> 1 <br />