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<br /> <br />At the end of the life of an aggregate or. industrial operation final reclamation begins. <br />Reclamation is covered under Rule 6 of MLRB regulations and by an approved MLRB <br />Permit. <br />^ ASPHALT MANUFACTURING <br />A hot-mix asphalt plant blends together aggregate and asphalt cement to produce a hot, <br />homogeneous asphalt paving mixture, which is then hauled to off-site construction <br />projects. The aggregate used can be a single material, such as a crusher run <br />aggregate or a pit run material, or it can be a combination of coarse and fine <br />aggregates, with or without mineral filler. The binder material used is normally asphalt <br />cement but can also be an asphalt emulsion or one of a variety of modified materials. <br />Various additives, including liquid and powdered materials, can also be incorporated <br />into the mixture. <br />Activities at these sites may include the following: raw material unloading into <br />stockpiles or storage tanks, raw material feed to plant, material batching, raw material <br />storage area, recyclable asphalt disposal area, truck wash out, and water supply and <br />settling lakes. <br />^ READY MIXED CONCRETE <br />These operations mix sand, gravel, cement, and water together to form ready mix <br />concrete, which is hauled to off-site construction projects. <br />Ready Mixed concrete is produced at these locations by combining raw materials in a <br />mixer, which can be stationary (central mix plant) or truck mounted. The raw materials <br />are made up of sand, gravel, cement, water and additives. The sand and gravel is <br />either stored in stockpiles located outside and fed into the plant via loader and <br />conveyors, or it is directly stored in a series of hoppers located directly above the <br />central plant. The remainder of the raw materials is stored in tanks to protect them from <br />exposure to moisture and temperature until they are pumped into the mixer. Once the <br />raw materials are fed into the mixer and combined to form ready mix concrete, the final <br />product is removed from the site by truck. <br />Dry Batching is apportioning out and dumping the mix into the concrete truck or mixer <br />while the cement truck continues to agitate at a lower speed to keep it from hardening <br />before it arrives at the site. <br />Activities at these sites may include the following: raw material unloading into <br />stockpiles or storage tanks, raw material feed to plant, material batching, raw material <br />