Which of the following is an acceptable method of extinguishing a Dumpster fire?

Filling a dumpster with water from a deck gun can be an effective method for extinguishing a fire. This technique allows for a significant volume of water to be delivered quickly and efficiently, which can help suppress the flames and cool the materials inside. The use of a deck gun is particularly suitable for larger container fires, as it can deliver a powerful stream of water from a safe distance, reducing the risk to firefighters while ensuring an adequate water supply reaches the fire.

In contrast, other methods may not be as effective or practical. For example, filling the dumpster with high-expansion foam could be challenging due to the logistics of delivering the foam, and it may not fully extinguish the fire if the materials are not adequately covered. Applying Class B foam and allowing it to soak into the materials may mitigate some of the fire, but success would depend heavily on how well the foam penetrates the materials and whether it can effectively cool the fire. Allowing the fire to burn itself out can be very dangerous, as it poses risks of spreading to other areas and creates hazardous conditions for firefighters and surrounding property. Therefore, using water from a deck gun stands out as a more reliable method for quickly and effectively extinguishing a dumpster fire.