Interactions of ClO2 and H2O2 Fumigants with Dirt and Grime on Subway Concrete
U.S. EPA. Interactions of ClO2 and H2O2 Fumigants with Dirt and Grime on Subway Concrete . U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/226, 2014.
The primary objective of this research was to evaluate the impact that dirt and grime, as present on unpainted subway concrete, may have on fumigation efficacy. Other objectives include determining which sampling procedure provides better recovery from grimed and cleaned concrete, and characterizing subway material before and after cleaning using a prescribed method from the New York City Metropolitan Transportation Authority (MTA).