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State Wants Cleaner Diesel Exhaust

A California state agency wants to reduce harmful diesel exhaust from off-road construction machinery. Proposed regulations would require commercial vehicles to change their engines or buy new equipme

State Wants Cleaner Diesel Exhaust

A California state agency wants to reduce harmful diesel exhaust from off-road construction machinery. Proposed regulations would require commercial vehicles to change their engines or buy new equipment. KPBS Reporter Ed Joyce has details.

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The California Air Resources Board rules would require owners to re-equip their off-road construction machines with cleaner engines. The equipment includes graders, bulldozers - the huge, mostly yellow vehicles. Michael Lewis represents major Southern California contractors. He says the regulations would cost the industry about $12 billion to change their equipment.

<b> Lewis: </b> We would have to virtually eliminate most of the existing construction fleets and replace them with the very newest equipment, that some of which isn't even available on the market yet, by 2020. And we don't think that there's enough money or time to do it by that date.

Lewis says contractors want to extend the timeline until 2027. California says diesel exhaust particulate matter is a toxic air contaminant. The state says the exhaust can cause cancer, premature death, and other health problems. Ed Joyce, KPBS News.