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(Salt Lake City-AP) -- Hot weather and emissions from automobiles and industry have combined to produce high ozone levels in Salt Lake Valley this week.
On Sunday, the ozone levels surpassed federal health standards at air-monitoring stations in West Valley City and central Salt Lake City.
The problem probably will get worse as temperatures climb toward 100 degrees this weekend.
State environmental officials called for no-drive days on Monday and yesterday, asking residents to reduce automobile use by carpooling, telecommuting or using mass transit.
Officials did not issue a no-drive day alert for today, but high temperatures are expected to resume tomorrow and continue through the weekend/
(Copyright 2003 by The Associated Press. All Rights Reserved.)
