The Environmental Protection Agency yesterday limited the allowable amount of pollution-forming ozone in the air to 75 parts per billion, a level significantly higher than what the agency's scientific advisers had urged for this key component of unhealthy air pollution. -
EPA Tightens Pollution Standards
The Environmental Protection Agency yesterday limited the allowable amount of pollution-forming ozone in the air to 75 parts per billion, a level significantly higher than what the agency's scientific advisers had urged for this key component of unhealthy air pollution.-
By Juliet Eilperin