Smoke could be seen billowing from the Republic Services Recycling Center along Rice road, near Friant.
Fresno City and CAL FIRE crews responded to the business around 2 Monday afternoon.
They discovered a 2,500 square foot area of material was burning.
In late May, there was a fire at this same facility that burned a little over 60 acres near Woodward Park.
Officials say the burn scar from that blaze helped prevent today's fire from spreading.
The cause of this incident is under investigation.