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For public works projects located outside Air Pollutant Exposure Zones, the Contractor shall utilize only off-road equipment and off-road engines fueled by biodiesel fuel grade B20 or higher and utilize only off-road equipment that either: (a) meets or exceeds Tier 2 standards for off-road engines, or (b) operates with the most effective VDECS.
(Added by Ord. 28-15 , File No. 140805, App. 3/19/2015, Eff. 4/18/2015)