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. ..', I~ASPHALT MANUFACTURING A hot-mix asphalt plant blends together aggregate and asphalt cement to produce a hot, homogeneous asphalt paving mixture which is then hauled tooff-site construction projects. The aggregate used can be a single material,. such as a crusher run aggregate or a pit run material, or it can be a combination of coarse and fine aggregates, with or without mineral filler. The binder material used is normally asphalt cement but can also be an asphalt emulsion or one of a variety of modified materials. Various additives, including liquid and powdered materials, can also be incorporated into the mixture. Activities at these sites may include the following: raw material unloading into stockpiles or storage tanks, raw material feed to plant, material botching, raw material storage area, recyclable asphalt disposal area, truck wash out, and water supply and settling lakes. ^READY MIXED CONCRETE h These operations mix sand, gravel, cement, and water together to form ready mix concrete, which is hauled to off-site construction projects. Ready Mixed concrete is produced at these locations by combining raw materials in a mixer, which can be stationary (central mix plant) or truck mounted. The raw materials are made up of sand, gravel, cement, vvater and additives. The sand and gravel is either stored in stockpiles located outside and fed into the plant via loader and conveyors, or it is directly stored in a series of hoppers located directly above the central plant. The remainder of the raw materials are stored in tanks to protect them from exposure to moisture and temperature until they are pumped into the mixer. Once the raw materials are fed into the mixer anti combined+ to form ready mix concrete, the final product is removed from the site by truck. Dry Botching is apportioning out and dumping the mix into the concrete truck or mixer while the cement truck continues to agitate at a lower speed to keep it from hardening before it arrives at the site. Activities at these sites may include the following: raw material unloading into stockpiles or storage tanks, raw material feed to plant, material botching, raw material storage area, recyclable concrete disposal area, truck wash out, and water supply and settling lakes. C~EQUIPMENT FUELING Diesel and/or gasoline tanks are located on site for fueling of equipment. Off-site vendors refill tanks as needed. (~L(t~I ~G_Y lU rGr00 ~AC_ -L;i i:•_~.~.-. '-.v_..a`_' ..h.. as Aa«t..' - Lmv.--..as'w--..x.ei.a.-~_......_~_ __....__. ~___ .___~ ~__ ._._.__.._......