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Why UCS Supporters Are Pressing EPA to Let California Enforce Its Truck Pollution Rules

Union of Concerned Scientists

I have developed asthma as an adult and being in the vicinity of any diesel engine is enough to set me off, but the long-term health effects for all of us from the ambient particle pollution really cannot be overstated. Truck pollution is killing us, the planet, and it stinks. We in Colorado have many days of problematic ozone.