About: http://webisa.webdatacommons.org/401235279

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This threshold is lower for some chemicals, including some heavy metals, particulate matter, and some hydrocarbons.
http://www.w3.org/ns/prov#wasQuotedFrom	carexcanada.ca