Seattle Fire crews were on the scene of a dumpster fire in The Arroyos for several hours this morning – so, given the recent wave of suspicious dumpster fires elsewhere in the city, we asked SFD what they’d found out about this one. Just got the update from SFD spokesperson Kristin Tinsley that this one was “ruled accidental, caused by improperly discarded oil-staining rags. The material spontaneously combusted.” A neighbor says it was a construction-type dumpster.