Comments on: Tackling Asthma: On and Off the Field The EPA Blog Fri, 31 Jul 2015 15:03:35 +0000 hourly 1 By: Amy Stephan Wed, 08 May 2013 02:36:27 +0000 Playing on tire crumb based athletic turf fields should be studied as an asthma trigger. Tire crumb contains all the ingredients that could provoke an asthma attack, including 24 harmful gases, carbon black particulate (tires are 30% carbon black; a probable carcinogen) in varying sizes, benzothiazoles, PAHs, POHs, laytex, and sulphurs… and of course a multitude of mixtures of these ingredients (and many more!) that are created in the chemically dynamic area above a field. Of course the yield from the tire crumb increases as temperature increases, and we parents know that the fields on a typical sunny day in summer in DC routinely reach 160F or higher… the heat fatigue alone can provoke respiratory stress. These fields should never have been allowed near children.