So he didn't roll them back. He made them 10 ppm instead of 50 ppm. Thanks The EPA site is right.
So he didn't roll them back. He made them 10 ppm instead of 50 ppm. Thanks The EPA site is right. Looks like he might have done both? Rolled them back, then put them at 10 when studies showed it was needed?
But you're right, the list needs to be corrected.