Patent ID: 8048204

Claim:
A method of mixing polluted air with less polluted air to provide moderately polluted air, the polluted air comprising at least one roadway pollutant in at least one concentration moving from a roadway region proximal to a roadway toward a leeward region substantially above a leeward area, the less polluted air comprising said at least one roadway pollutant in at least one lower concentration located distal to the roadway, and the moderately polluted air comprising said at least one roadway pollutant at a reduced concentration disposed proximal to the leeward area, the method comprising: (a) providing an outer wall spaced apart from the roadway; (b) providing an inner wall disposed between the roadway and the outer wall, the inner wall comprising: a lower portion extending between a top end thereof and a bottom end thereof, and positionable a preselected distance apart from the outer wall to at least partially define a first channel therebetween; the lower portion being formed to at least partially define at least one aperture for directing a first part of said polluted air into the first channel; a deflector positioned at the top end of the lower portion, the deflector comprising an upper end thereof positioned at a first preselected height above the ground to permit at least a portion of said less polluted air to pass over the upper end while the less polluted air moves from the roadway region toward the leeward region; and (c) directing said first part of said polluted air through the first channel such that said first part is directed upwardly thereby to mix with said less polluted air for providing said moderately polluted air proximal to the leeward area.