On Monday May 14, 2007 at approximately 1330 hours, a tanker truck departed the Prince Frederick McDonald's with a load of used cooking oil. However, the driver accidentaly left open one of the valves causing him to slowly dump his load of oil for several miles causing a huge hazard. At Route 4 and Plum Point Road, he stopped at the traffic light, leaving a huge pile of slick oil. Once green, he continued on. About the same time, 911 dispatched the local for Company 6 for the wash down bringing Squad 6 (Sgt Kerns). While in route, a car attempting to make the turn into Plum Point Road hit the "icy" roadway and slammed into another car. The call was upgraded to an auto accident bringing Chief 6 (Riffe), Chief 6B (Montgomery), Chief 6C (Hayes), Squad 6 (already responding), Engine 61 (S/O Collins), Ambulance 68 (Hayward) and Prince Frederick Ambulance 48. Units arrived to find several miles of Route 4 covered in grease. A total of 3 patients were transported to Calvert Memorial Hospital with non-life threatening injuries. The crew from Squad 6 and Engine 61 closed down the outside lane awaiting State Highway with several loads of sand. Emergency Management was also notified due to the run-off in a nearby creek. Squad 6 remained on the scene for several hours assisting. Chief 6C held the Huntingtown command.
On a side-note, the driver was found by authorities at the Dunkirk McDonald's awaiting to pick up another load of used oil, but found that he had an empty load from previous.