At approximately 1:45 PM, Station 2 and Rescue Squad 4 were alerted for a vehicle collision involving at least two vehicles and a report of one trapped in the 3100 block of Hampstead Mexico Road (Maryland Route 482). Medic 29 and Truck 2 arrived on the scene to find two vehicles were involved: a large box truck from which the driver had self-extricated was rolled onto its side, and a full-sized van from which the passenger had self-extricated contained the driver who was pinned. Another BLS ambulance was requested while the Truck 2 crew, assisted by Rescue Squad 4, worked to remove the driver from the van. M29 transported the van’s driver to Sinai Hospital while IVT37 transported the passenger to Carroll Hospital Center. After the rescue, it was found that the box truck was leaking fuel and a Hazmat response was requested. The crew of Truck 2 stabilized the truck before the fuel was off-loaded from the saddle tanks by the Carroll County Hazardous Materials Team.