Pristine Solutions highlights a report by CNN Headline News on the use of Chlorine Dioxide gas used to eradicate mold after the flooding caused by Hurricane Katrina.

Before the anthrax attacks in late 2001, bioterrorism experts believed that the remediation of large urban areas or buildings contaminated with anthrax spores was not a viable option. The cleanup experience from the 2001 attacks, in which letters containing Anthrax spores were mailed to media outlets and two Senators, has demonstrated that buildings in the civilian sector can be effectively remediated and returned to productive use. This clip shows the remediation process for the US Senate Hart Office Building using chlorine dioxide gas. For an excellent review of the experience remediating buildings learned from the 2001 anthrax attacks, read the 2003 EPA report by Dorothy A. Canter, Ph.D., US Environmental Protection Remediating Sites with Anthrax Contamination: Building on Experience, available at: http://www.epa.gov/nhsrc/pubs/paperAnthrax Remediation020607.pdf . This was clipped from the 2002 USEPA video, Anthrax Remediating the Effects of Bioterrorism.

"After raising humidity levels... a machine emitted the gas and today also removed the chlorine dioxide gas out of the air, using a different chemical, sodium bisulfite. EPA is also cleaning eleven other offices and areas in the Hart building using different technological methodologies such as chlorine dioxide liquid, foams and HEPA vacuum."

"Federal officials backed away yesterday from a plan to fumigate a Senate office building with chlorine dioxide gas to kill anthrax spores after outside experts raised questions about the decontamination technique." "Most experts thought chlorine dioxide gas would kill anthrax, she said. "The unknown was, 'How do you use it on a building that big?'""

Chlorine dioxide could be safely used to fumigate a US Senate office building, says the US Environmental Protection Agency

"Workers in Washington have finished fumigating offices in the Hart Senate Office Building that had been contaminated with anthrax... Officials involved in the decontamination effort at the Hart building say it is unlike any other cleanup they have ever done before." "So we ended up with essentially a short list of technologies that we believed would be effective," he said. "We went through a lot of those and quickly arrived at chlorine dioxide as being the one that had the best chance at being effective."

2021 March

Gas treatment: "Place one gallon of water in a pail, hang the battery-powered aerator on the edge and extend the hose with an air stone to the bottom. Place the pail in the center of the truck on the floor, turn on the aerator and place a 100 gram ClO2 tablet into the pail and exit the truck cab, closing vents, doors and windows for five hours or until vapors cease and water is clear. Leaving overnight is ideal. When the ClO2 solution has turned clear, it can be disposed of." Spray/fog treatment: "Between 250 ppm and 500 ppm, and fill a wet fogger or sprayer with the ClO2 solution. Wet fog or lightly spray all surfaces, ceiling to floor, allowing five minutes of wet contact time... Chlorine dioxide can be used in vapor- or a liquid-form, but as a liquid it is more fragile and its effectiveness is vulnerable to sunlight. Once diluted from tablet- to liquid-form, it has a shelf life of up to six months if stored correctly in an air-tight opaque container out of direct sunlight."