Quakertown Hunterdon County NJ) Fire Company Tanker 91-2. Tanker 91-2 is a 2006 Mack Granite Pierce Tanker with a 1000 GPM pump and a 3000 gallon water tank. It is powered by a 427 horsepower engine, has side dumps controlled at the cab and a manual dump in the rear. It has numerous pre-connects for rapid offloading at operations and a 35” extension ladder. A hydraulic rack holds a 3000 gallon folding tank. The Tanker runs second on all structural alarms and as special request on box alarms.