{"thcode":3,"term":{"code":584,"name":"karst areas","parent":816,"scope":"Areas of geologic formations of irregular limestone deposits with sinks, underground streams, and caverns.  [EPA Terms of Environment < http:\/\/www.epa.gov\/OCEPAterms\/>]"},"uf":[],"bt":[{"code":816,"name":"physiographic features","parent":1,"scope":null},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[]}