Blue Smoke is a visible emission from hot mix asphalt plants that results from the process of mixing hot oil (contained in the bitumen) with aggregate. This new technology significantly reduces emissions that result during loading. With BST, the smoke is captured, rerouted and ultimately re-used in the combustion chamber.

The VOC Reduction Device (VRD) filters emissions, including 70% of the VOCs that can develop while recycling asphalt, and cleans itself; no new filters are required.