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SECTION 1 <br />Description of Industrial Activities <br />This SWMP has been prepazed for the Howe Concrete Plant, which produces ready mix concrete <br />for use at construction sites in the Adams County vicinity. FIGURE 1 identifies the general <br />location of the facility, as well as the nearest receiving waters. Construction activities present at <br />the site are as follows: <br />^ GRADING <br />Site is leveled and smoothed according to final project specifications using a road grader. <br />This may include right-of--ways, drainage ditches, and road sub-base areas of the project. <br />/ QUARRYING <br />Drilling and blasting is used to liberate virgin stone from its natural consolidated state. <br />Haul trucks are typically used to take the material to the plant for processing. <br />/ STOCKPILING (Check if applicable) <br />/ OVERBURDEN AND TOP SOIL <br />Stockpiles may occur in the form of earthen berms. <br />/ SAND AND GRAVEL <br />Raw and processed aggregates are stockpiled for future use. <br />/ AGGREGATE MIX FOR CONCRETE PRODUCTION <br />Aggregate can be stored in stockpiles, and loaded into a ground hopper as needed, and <br />then conveyed to the plant. Material may also be loaded directly into a series of hoppers <br />located above the plant that directly discharge into the plant. <br />/ AGGREGATE MIX FOR ASPHALT PRODUCTION <br />Raw material can be stockpiles or put into storage bins. <br />^ ASPHALT MILLING <br />The existing roadway is milled, emptied into haul trucks and hauled off-site. <br />^ ASPHALT PAVING <br />Hot mix asphalt is transported to the project from a production plant located off-site. It is <br />then placed, compacted and rolled according to project specifications. <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 aggregate or <br />a pit run material, or it can be a combination of coarse and fine aggregates, with or <br />Riverbend <br />S[orm Water Management Plan <br />Page 4 of 19 <br />