KYDEP notified EPA duty officer of a release of 40-50 barrels of crude oil due to valve failure on a tank. The valve failure is believed to be a result of vandalism. Oil reached Greasy Creek, where boom was applied and an underflow dam built, but sheen did escape the immediate area and moved toward Panther Creek. The responsible party has responded with a vac truck as well. KYDEP in on-scene and EPA OSC Smith has been deployed.