After doing a cleanup at a large commercial property Saturday, I got a phone call in the morning on Monday from the plant supervisor telling me that my mulch is burning up.... At that point I figured that they were just busting my balls like they usually do, so then I said "really??"....They asked what do you want us to do? I said jokingly, drag those sprinklers out and start watering then call the fire dept......Still thinking they were pulling my leg, I drive over to the plant and see the facility shrouded in a haze.....my stomach is hitting the floor as I pull up and see 4 employees trying to put out a smoldering mulch fire. It appears that the mulch ignited on it's own because of the heat build up in front of the building & the reflective glass. It was like I was in a bad dream as I tried to figure out how it happened and what to do....I thought maybe it was a cigarette, but I saw it happen with my own two eyes...out of no where, the mulch would start smoking and randomly smolder like a cancer. What the heck is going on here??? I heard this has happened to others in our area this year....Any insights? Has this ever happened to you??? What would be the legal proceedings had this caused property damage, and will it flare up again??