Utah physician Brian Moench is worried. There's only anecdotal evidence so far, but Moench maintains that oil and gas drilling in the Uinta Basin that straddles Utah and Colorado is almost certainly causing health problems for residents, including increased infant mortality. But EPA has yet to declare the region out of attainment with federal ozone standards, a designation that would force the state to write a plan to reduce pollution. The reason? Air monitors that have recorded ozone readings in excess of federal limits for three consecutive years don't meet EPA standards and can't be used for enforcement.