`A man knocked on the door of the fire station near the corner of San Ramon Way and San Marin Drive in Novato at about 11:30 p.m.
A firefighter answered and saw a man wearing goggles and surgical gloves and holding a gallon-sized bag with a white powdery, crystal-like substance inside. The man tried to hand the firefighter the bag but the firefighter refused. The man turned and ran to a car where a second person and they drove away.
The firefighter did not handle the bag but he said he felt a burning sensation on his face.’