Two months after a massive fire at the Poly-America plant in Grand Prairie, the cause remains unknown.
The Grand Prairie Fire Department is working with the Bureau of Alcohol, Tobacco, Firearms and Explosives to investigate the Aug. 18 fire.
“Due to the fire’s complexity, the Poly-America fire investigation continues and is expected to continue for several weeks,” said Claudia Garibay, the department’s public information officer.
Initial reports from bystanders stated that power lines fell and caused the fire. But fire department investigators, using bystanders’ photos and time stamps of power failures from Oncor, determined that the lines failed after the fire grew out of control.
A similar fire occurred at a facility operated by a Poly-America subsidiary in Chester, S.C., on Aug. 24, six days after the Grand Prairie fire.
ATF offices in both cities began communicating about the fires at the end of August.
Lockheed Martin, which occupies a large presence near the Grand Prairie plant, recognized the department this week for its quick action during the blaze, which lasted 23 hours and involved approximately 100 firefighters.
Firefighters were on the scene within five minutes, but “the difficulty of access to the fire and lack of adequate water supply contributed to the quick spread” at 2000 West Marshall Drive.
The department used its mutual aid agreements with Dallas, Fort Worth, DFW International Airport, Irving, Joint Reserve Base, Duncanville and Cedar Hill to contain the fire.
“All of these departments played an integral role in either assisting on the fire scene or supporting other emergency responses throughout the city, and GPFD is grateful for their assistance,” the department said in an August news release.
Environmental cleanup, including monitoring of the air, water and soil in the surrounding area, is ongoing and being monitored by the Texas Commission on Environmental Quality.