With the amount of dust in the air the EPA should monitor it as well.
Experience with grading contractor operating within a metropolitan area dictates that a responsible contractor provides the trucks with a "Wheel Wash down" pad. Either a concrete or asphalt area that the truckers pull on to to clean the tires on their bottom dumps before pulling onto the highway.
The mess we saw there today with trucks racing in and out throwing a ton of dust in the air is unacceptable and the city is remiss to say the least in allowing it to continue.
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