LOS ANGELES COUNTY : First-Stage Smog Alerts and Ozone Levels Decline
Continuing a decade-long trend of cleaner air in the South Coast Air Basin, the number of first-stage smog alerts in 1992 fell to a level equal to that of the region’s cleanest year since measurements have been recorded, the South Coast Air Quality Management District said Friday.
There were 41 first-stage smog alerts in 1992, the same as in 1990. In 1991, 47 such episodes were recorded.
In addition, peak levels of ozone fell to the lowest measurements since monitoring began in 1955, the district said in releasing preliminary figures for the 1992 smog year, which runs from January through October. Joe Cassmassi, an AQMD senior meteorologist, credited the improvement to cooler weather, ongoing efforts to control emissions, cleaner cars, and increased cooperation by industry and the public.
The basin includes Los Angeles, Riverside and Orange counties, and the non-desert portions of San Bernardino County.
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