Stabilized Surface definition
Stabilized Surface means, for any disturbed surface area or open storage pile, that the surface does not emit visible emissions from wind-driven fugitive dust that exceed 20% opacity when the wind speed is less than 20 miles per hour and that the surface meets and maintains one of the following standards as measured by one or more of the applicable test methods contained in Sections 2.2–2.7 of Appendix C of Maricopa County, Arizona, Rule 310, as it exists on January 27, 2010: