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Loveland Ready-Mix, Concrete, Inc. 7 September 2021 <br />updated_exhibits_d.docx <br /> <br />6.1.2 Mining <br />The sand and gravel deposit will be mined to bedrock. An excavator stationed on a <br />moveable platform will be used to mine the material wet. The mining excavations will not <br />be dewatered. The mining will be done in three Cells ranging in size from 11 to 36 acres, <br />with excavation conducted to bedrock. A previous geotechnical report (C.E. Maguire <br />Subsoil Exploration Report, 1978) and the recently installed groundwater monitoring wells <br />have established the bedrock surface at approximately 28 to 30 feet below ground surface. <br />Because the material is mined “wet”, mined slopes will be consistent with slope stability <br />calculations provided in Appendix B1. <br />The operator will develop and comply with a Stormwater Management Plan (SWMP). <br />Berms and sloping of ditches will divert flow from all disturbed areas back into the mined <br />cells. The operator will notify the Division of Mine Safety and Reclamation (DRMS) in <br />the event of a reportable spill. <br />Mined material will be stockpiled adjacent to the mining cells. The material will remain <br />adjacent to the mining cell and drainage water will flow back to the mined cell. The <br />material then will be loaded into haul trucks and transported offsite. <br />6.1.3 Imported Material <br />Currently there are no plans to import material from other sites. Loveland Ready-Mix <br />Concrete, Inc. (LRM) is aware that in accordance with Rule 3.1.5(9) of the Construction <br />Materials Rules and Regulations, if any offsite material is used as backfill, a notarized letter <br />will be submitted to the DRMS indicating the materials are inert. <br />6.2 Earthmoving <br />Section 6.2 provides the information required by Sub-section 6.4.4(b) of the Rules and <br />Regulations.