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October 31, 2013 <br />Transit Mix Aggregates Company/ Castle Concrete/ Continental Materials Corporation <br />Pikeview Quarry <br />Inert Material Notice <br />Section a <br />The quarry is located at 7250 Allegheny Drive, and currently holds a 240.5 acre permit <br />with Colorado Division of Mining Reclamation and Safety. The proposed Inert Materials <br />Repository will extend across 6.83 acres and was previously known as Area H. It is an <br />existing pit within the quarry, and materials will be backfilled below grade. A temporary <br />stockpile zone of 0.32 acres will be located on an adjacent bench to the pit. The areas <br />associated with the inert disposal area extend across 7.15 acres as shown on Figure 1. <br />Section b <br />This action seeks to allow Castle Concrete Company to include 30,000 cubic yards of <br />concrete for structural fill at the Pikeview Quarry in an existing pit slated for reclamation. <br />Section c <br />A signed affidavit certifying that the materials are clean and inert, as identified by <br />CDRMS Rule 1.1(20) will be associated with each load and retained at the quarry office <br />for a period of three years. <br />Section d <br />Inert material disposal will begin as soon as all permitting is in place and will continue <br />for a maximum of 1.5 years. <br />Section e <br />The post- mining land use of wildlife habitat will not be influenced by the addition of as <br />much as 30,000 cy of inert material at a site where 5.775 million bcy will be cut. <br />Section f <br />Materials will be stockpiled at the elevation of the shop bench prior to placement in the <br />pit, to allow screening of unacceptable materials as shown on the Plot Plan in Figure 1. <br />The bottom of the pit is approximately 7,130 feet. The total quantity of inert materials <br />would not exceed 30,000 cubic yards and an affidavit would accompany the material <br />brought on site (attached). Inert material is defined as non - water - soluble and non - <br />putrescible solids together with such minor amounts and types of other materials as will <br />not significantly affect the inert nature of such solids. The majority of acceptable waste <br />for the facility will consist of concrete foundation and curbing materials. Each load <br />accepted for disposal will include documentation that it is asbestos free, and records of <br />the volume of the materials and their certification will be retained at the quarry office for <br />a period of three years. Material will be placed in the pit not more than 1,000 cubic <br />yards at a time. Limestone fines, produced onsite, will be added to the pit along with <br />waste during backfilling to fill voids and minimize settling. It is anticipated that there will <br />be less than 30,000 cubic yards of materials, and that the limestone fines backfill will <br />compact the space between the concrete sufficiently to avoid significant differential <br />settling. Remote - controlled dozers will push approved waste into the pit to be used as <br />