dec. 13 story correct third paragraph say dourson former professor university cincinnati washington former chemical industry consultant nominate trump administration head environmental protection agency chemical safety pollution prevention office withdraw nomination bloomberg report wednesday michael dourson notify administration decision wednesday republican senators raise concern past work possible conflict interest say bloomberg cite unnamed official report dourson former professor university cincinnati work consultant chemical company one several people whose nominations top epa position approve senate environment panel october 11-10 vote along party line bloomberg say several republican senators refuse support dourson include richard burr thom tillis north carolina raise concern contaminate water camp lejeune military base state white house immediately respond reuters request comment spokeswoman burr say could confirm dourson withdraw tom carper top democrat senate environment panel say statement dourson individual spend career promote less protective chemical safety standards business oversee nation chemical safety laws environmental group earthjustice hail news victory children workers communities deserve strong protections exposure toxic chemicals pesticides dourson consultant assess chemicals include pfoa use make teflon non-stick surface safe level far high consider acceptable epa nominee u.s. epa chemical safety withdraw bloomberg