(Orange)- An investigation is underway after a two-vehicle accident in Orange County. The incident happened yesterday at the intersection of Routes 231 and 20 when a tractor-trailer and a dump truck collided and sent both off the roadway. The trucker ran into the Somerset Center Store while the dump truck hit a house and had a fuel leak that required a hazmat cleanup. Occupants inside the store were taken to local hospitals for treatment. The driver of the dump truck received treatment at UVA Medical Center.