Sprinklers successfully doused a commercial paint booth fire, but paint and lacquer contaminated the water, which flowed into a storm drain and created a hazardous materials incident, say Riverside Fire Department officials.

(Blog Editor Note: Sprinkler systems use a small fraction of water compared to fire department hoses.  By controlling the fire as early as possible, sprinkler systems limit the amount of run-off and toxins released into the air)

The blaze was reported at 8:50 am. Monday, April 25, along the 11600 block of Sterling Avenue, just south of Hwy. 91 and across the street from two sets of railroad tracks and a flood control channel.

The trouble started when the tenant used a power saw to cut wood in the paint booth, Battalion Chief Tony Perna said in a written statement. The saw blade hit a screw, sparking the fire.

The heat-activated sprinkler system snuffed the flames. But about 500 gallons of contaminated water ran down a storm drain.

Firefighters diked the storm drain entrance to halt further contamination. And they alerted environmental agencies, sewer and storm drain workers, county flood control authorities, and even federal and state fish and wildlife officers.

The tenant and a worker suffered minor smoke inhalation and were treated at the scene.