McClatchy: After the White House intervened, the Environmental Protection Agency last week weakened a rule on airborne lead standards at the last minute so that fewer polluters would have their emissions monitored.The EPA on Oct. 16 announced that it would dramatically reduce the highest acceptable amount of airborne lead from 1.5 micrograms of lead per cubic meter to 0.15 microgram. It was the first revision of the standard since EPA set it 30 years ago.However, a close look at documents publicly available, including e-mails from the EPA to the White House Office of Management and Budget, reveal that the OMB objected to the way the EPA had determined which lead-emitting battery recycling plants and other facilities would have to be monitored.