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Loveland Ready-Mix, Concrete, Inc. 6 September 2021 <br />updated_exhibits_d.docx <br /> <br />6.0 EXHIBIT D – MINING PLAN (UPDATED 3/16/22) <br />This exhibit provides the information required by Section 6.4.4 of the Rules and <br />Regulations. <br />6.1 Mining Methods and Surface Disturbance <br />Section 6.1 provides the information required in Sub-section 6.4.4(a) Rules and <br />Regulations. <br />The entire site consists of approximately 114.25 acres. There are approximately 76 acres <br />that LRM will utilize for mining. Approximately 38 acres of the site will consist of <br />boundary offsets, perimeter buffering the main access road, the Big Thompson River <br />corridor, and stormwater management areas. <br />6.1.1 Site Preparation <br />The site will first be cleared of unneeded existing structures (old fencing and cattle chutes). <br />The topsoil, if present, material will be stripped as each Cell is mined. Stripping will occur <br />in phases or “strips” approximately 1/8th to 1/4th of the size of the Cell to expose the active <br />mining area. The stripped material will be stockpiled adjacent to the active mining area. <br />Scrapers, front-end loaders, excavators, and bulldozers may be used for stripping. Topsoil <br />stockpiles, ditches and grading may be used to direct stormwater into the mining cells. <br />Exhibit C shows the quantities of topsoil for each phase. A typical topsoil stockpile berm <br />size will be 36 feet in width, 10 foot high, or 6.6 sq-yd per ft. The topsoil stockpiles will <br />be stabilized, and erosion control devices will be installed. If the topsoil stockpiles will be <br />in place for 180 days LRM will seed to produce a vegetated cover. <br />An access bridge across the Big Thompson River will require a 404 Permit to construct. <br />As part of the 404 Permit the bridge will be installed and analyzed to certify that it does <br />not create a rise in the floodway. Haul roads will be established and stabilized during site <br />preparation.