About: http://webisa.webdatacommons.org/386658298

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	EPA is also proposing to set a separate seasonal ???secondary??? standard to protect the environment, especially plants and trees, at the level of within the range of 7-15 ppm-hours.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov