Wildland fire is not slowing down. According to Hazard Control Technologies, wildfires have burned an annual average of 7 million acres in the United States alone since 2000, more than double the annual average of the 1990s. For a department on the Northern California fire line, or at the edge of a neighborhood where the brush meets the backyards, the practical question is simple: can one agent protect the crew at the nozzle, work from the air, and defend what is still standing, without fluorine?
One agent, three jobs
F-500 EA, from Hazard Control Technologies, the manufacturer of the agent, is an Encapsulator Technology — not a foam and not a powder. Its building blocks are spherical micelles that can encapsulate carbon molecules and both polar and non-polar hydrocarbon vapor and liquid molecules. The manufacturer lists four features: encapsulation, rapid heat reduction, free radical interruption, and eco-friendly benefits. The agent is fluorine-free, biodegradable, and noncorrosive, and the rate for wildland work is 1%.
Protecting the crew at the nozzle
Wildland crews work in the smoke. The United States Department of Agriculture reports that wildland firefighters are exposed to dangerous levels of carbon monoxide as well as several known carcinogens, including benzene, formaldehyde, and certain PAHs. Encapsulator Agents absorb free radical energy, halting the production of carcinogenic toxins in smoke and soot at the nozzle.
“Encapsulator Technology can reduce the concentration of toxins present in smoke and soot, greatly improving ground conditions for wildland fire brigades and the surrounding communities they serve.” — Hazard Control Technologies
That puts the health benefit at the nozzle, where the exposure starts.
Working from the air
The same solution goes into aircraft.
“Following extensive testing, F-500 EA® was chosen by the Georgia [Forestry Commission] to use in their planes for air drops.” — Hazard Control Technologies
The Commission’s own evaluation shows what that testing looked like. In November 2021 its Air Operations Unit set out to find a liquid that could be poured straight into the hopper of its Thrush air tankers with no premixing, one that was effective on fire, easy to store and transport, and easy to train new crews to load. Both products tested were dropped from about 60 feet at 115 to 120 miles per hour onto a burning slash pile surrounded by cow pasture. The manufacturer’s F-500 encapsulating agent landed with a drop profile very similar to plain water, spread evenly across the target swath, and was less affected by wind drift than the foam tested alongside it. The fine fuels and one-hour fuels were cool to the touch within a minute, and when the crew tried to ignite the treated grass with a torch in a stiff 10 to 12 mile-per-hour wind, the fire would not spread through it for an hour. The Commission recommended buying F-500, noting that it met every requirement and had the better drop profile.
Outside the United States the record is broader. In 2019 the government of Chile worked with a distributor to test F-500 EA using a Chinook helicopter equipped with 10,000 liters of solution. That same year Hazard Control Technologies donated 1,000 liters of concentrate to fight wildfires in the Amazon and protect neighboring communities in Bolivia, and the government in Córdoba, Argentina invested in F-500 EA for backpacks, trucks, and air tractors.
Protecting what is left standing
On a wildland-urban interface fire, the structure in front of the fire is often the objective. The manufacturer describes proactive protection with a 1% solution that can shield homes and businesses from smoke, soot, and fire damage.
“Pre-treating can prevent fire spread as well as re-ignition in previously affected areas.” — Hazard Control Technologies
Structures, shrubs, and trees in WUI communities can all be pre-treated. For a department that spends the season defending neighborhoods, that is one agent on the truck for the fire and for the work ahead of it.
Easy on the landscape
The manufacturer positions F-500 EA as an eco-friendly choice for wildland work: fluorine-free, biodegradable, and noncorrosive. It is also an Encapsulator Agent under NFPA 18A, the standard that governs the category, and the same agent covers the Class A, B, C, D, K, and lithium-ion hazards a department meets in the rest of its year.
What it means in Northern California
Few places know the fire line and the neighborhood edge better. Wildland and WUI response here means long hours, hand crews, engines on narrow roads, and aircraft overhead. The agent that goes in the tank, the backpack, and the aircraft should be one the crew already understands. That is a conversation worth having before the season starts, with the people who will be holding the nozzle.
Next week we turn to the equipment that puts F-500 EA on the fire.
On-site training is available for your department or facility. Contact us at ControlHazards.com to schedule yours.
