At approximately 7:37PM BRVFC along with Collegeville Fire Company (34) were dispatched to a reported MVA with injuries on 422 EB at MM 186.6. Chief 99 arrived on scene with 2 vehicle MVA with 1 vehicle off to left shoulder and the other vehicle off to right shoulder. Chief 99 had Engine 99-1 and Squad 99 to take up blocking so EMS could checkout patient. 422 EB was down to 1 lane for about 20 mins and assignment was held to 99 units. 1 patient was transported to local hospital.