2015-12-04_GENERAL DOCUMENTS - M1977036

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SECTION I Description of Industrial Activities This SWMP has been prepared for 35"' Avenue Pit, Concrete and Asphalt Facilities, which produce aggregates, ready-mix concrete, and asphalt for use at construction sites in the Greeley, Colorado vicinity. FIGURE 1 identifies the general location of the facility, as well as the nearest receiving waters. Construction activities present at the site are as follows: ❑ GRADING/MINING Site is leveled and smoothed according to final project specifications using a road grader.. Material may be excavated using earthmoving equipment and processed through various feeders, screens, and crushers. This may include right-of-ways, drainage ditches, and road sub-base areas of the project. ❑ QUARRYING Drilling and blasting is used to liberate virgin stone from its natural consolidated state. Haul trucks are typically used to take the material to the plant for processing. STOCKPILING(Check if applicable) • OVERBURDEN AND TOP SOIL Stockpiles may occur-in the form of earthen berms.. • SAND AND GRAVEL Raw and processed aggregates are stockpiled for future use. • AGGREGATE MIX FOR CONCRETE PRODUCTION Aggregate can be stored in stockpiles, and loaded into a ground hopper as needed, and then conveyed to the plant. Material may also be loaded directly into a series of hoppers located above the plant that directly discharge into the plant. • AGGREGATE MIX FOR ASPHALT PRODUCTION Raw material can be stockpiles or put into storage bins. • RECYCLED ASPHALT PRODUCT Asphalt that is being stored and/or processed for reuse. • RECYCLED CONCRETE PRODUCT Concrete that is being stored and/or processed for reuse. ❑ ASPHALT MILLING The existing roadway is milled, emptied into haul trucks and hauled off-site.