Fairfax County authorities say part of Georgetown Pike will be shut down all day after a tractor trailer overturned on Monday morning. Authorities say they received a call at 7:27 a.m. for an overturned vehicle. They found a tanker was leaking sewage into the creek. Authorities aren't sure how much sewage spilled from the tanker, but they expect to take the entire day to clean up. The fire department crews were able to stop further leakage, say authorities. The driver of the tractor trailer was evaluated by medical crews and determind to be okay, say authorities.