While making a routine fuel delivery to a local gas station one morning, the driver of a tanker truck went inside to buy a coffee.
When he returned to the truck, 32 gallons (120 liters) of gasoline had spilled out, and more was flowing rapidly onto the ground. Acting quickly, he shut off the tanks and called 911. The time was 8:15am. Minutes later, firefighters – equipped with the G7 personal gas detectors the department was trialing – were on the scene.
By 8:19am, the fire department lieutenant received the first high gas notification from a G7c personal gas detector he had been testing. Initially, it seemed like a standard alert.
But by 8:21am, the lieutenant had received eight more similar notifications from multiple devices. It was clear the situation was hazardous – and had potential to get a lot worse.