December 18, 2014 7:55 pm Petroleum Detected in D.C. Water News4’s Tom Sherwood reports from DC’s Shaw neighborhood, where officials detected petroleum in tap water. Local 2:22 GW protesters celebrate after arrestees are released from DC police custody 3:50 Crews clear George Washington U. protest encampment after police arrest 33 people 8:06 DC mayor, police chief speak about 33 George Washington U. protest arrests 6:51 DC police use pepper spray, make arrests at George Washington U. 3:36 DC police clearing out George Washington U. protest encampment