About: http://webisa.webdatacommons.org/372153283

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	Half-lifeThe time required for one-half the aqueous concentration of a VOC to degrade to another VOC or other compound.
http://www.w3.org/ns/prov#wasQuotedFrom	usgs.gov