Canadian soil quality guidelines for propylene glycol

Canadian Soil Quality Guidelines for Propylene Glycol: Environmental and Human Health Discussion Document PN 1394 © Canadian Council of Ministers of the Environment, 2007 Note to Readers Scientific supporting documents are routinely prepared to provide the background and rationale for the development of Canadian Environmental and Human Health Soil Quality Guidelines for substances potentially rel [...] Propylene glycol was nominated in 2003 for the possible development of soil quality guidelines, based in large part on its use in aircraft de-icing fluids, and subsequent release to the Canadian environment, within the immediate vicinity of Canadian airports. [...] The typical seasonal limits of de-icing activities in Canada are from October to April of each year, although airports in subarctic and arctic regions may have a requirement for de-icing in any month of the year. [...] The major processes that determine the mobility and distribution of PG in the terrestrial environment are partitioning into surface and ground water. [...] Glycolic acid, and to a lesser extent, lactic acid, contribute to the production of metabolic acidosis, which is one of the hallmarks of acute ethylene glycol intoxication.