37 LEVEL C Emergency Room, Stanford Hospital, Templeton, California The emergency room erupted into organized chaos. “All right everybody, listen up!” Dr. Adele Lindquist yelled to the staff of medical personnel as they scrambled into positions. “We are level C, yellow zone. Under advisement from the National Institute for Occupational Safety and Health, we will follow the acute exposure guidelines to the letter. In the remaining thirty seconds we have before the ambulances arrive, here’s a refresher so you don’t screw it up. These are sets of short-term exposure limits for acutely toxic chemicals. Every one of you need to strap on your NIOSH-certified air-purifying respirator right now. No one removes their chemical resistant suit until we give the all clear. That means chemical-resis

