The man accused of setting a fire and nearly causing an explosion in a trauma room at Harborview Medical Center’s emergency department pleaded not guilty Tuesday morning.
Steven Sauro, 29, is charged with arson, malicious mischief, and four counts of assault.
Prosecutors say that on Feb. 14, Sauro caused about $100,000 in damage to the trauma room, started a fire near a broken oxygen line — which they say could have triggered an explosion — and kicked and spat on nurses and security staff…