This evening, stations 37 & 12 were dispatched to the area of Allentown Pike and Park Road to check for smoke in the area. Asst 33 on Rt 222 found a fire at the Berks Transfer facility on Willow Creek Road in Ontelaunee Twp. The assignment got upgraded adding E66 & R66. Crews arrived to find a working dumpster fire. E12 went in service. Our crew arrived and assisted with suppression and water supply.