( ( Describe ( ( ( ( ( ( ( contaminated media ) , ) extent ) ( of ( contamination ( -LRB- ( ( in ( ( concentrations , ) ( ( volumes , ) area ) ) ) -RRB- ) ) ) ) ) , ) and ) ( ( ( exposure pathways ) or ) ( ( the nature ) ( of ( ( the threat ) ( of release ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Describe) (NP (NP (ADJP (VBN contaminated)) (NNS media)) (, ,) (NP (NN extent)) (PP (IN of) (NP (NP (NN contamination)) (PRN (-LRB- -LRB-) (PP (IN in) (NP (NP (NNS concentrations)) (, ,) (NP (NP (NNS volumes)) (, ,) (NP (NN area))))) (-RRB- -RRB-)))) (, ,) (CC and) (NP (NP (NN exposure) (NNS pathways)) (CC or) (NP (NP (DT the) (NN nature)) (PP (IN of) (NP (NP (DT the) (NN threat)) (PP (IN of) (NP (NN release))))))))) (. .)))
Describe contaminated media, extent of contamination (in concentrations, volumes, area), and exposure pathways or the nature of the threat of release.
(ROOT (S (NP (DT The) (NN term) (NN concentration)) (VP (VBZ describes) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS items)) (PP (IN in) (NP (NP (DT a) (VBN given) (NN area)) (CC or) (NP (NN volume)))))))) (. .)))