On Saturday January 15th, Gloucester City FD Battalion 504 (Williams) arrived at the Holt's Marine Terminal to find a substantial collapse of a warehouse roof structure. After an investigation by Gloucester City Squad 51, it was discovered that an R-22 distribution line within the collapsed area ruptured, causing a large, concentrated vapor cloud to form within the building. Based upon these findings, Hazmat 13 was requested to the scene along with Camden City Rescue 1. Members of Hazmat 13 conducted air monitoring while research on the product was conducted. Once the product was identified and confirmed, private contractors isolated the source from a remote storage vessel. The building was ventilated and air monitoring was continued until meter readings were within permissible range. Hazmat 13 operated for approximately 3 hours on the incident.