(S (S (PP (JJ Due) (PP (TO to) (NP (BASENP (NNS concerns)) (PP (IN over) (NP (BASENP (DT the) (NN amount)) (PP (IN of) (NP (BASENP (NN discharge)) (VP (VP (VBG taking) (BASENP (NN place))) (PP (IN in) (BASENP (NNS waterways))))))))))) (COMMA ,) (S (NP (BASENP (DT the) (NNPS Corps)) (PP (IN of) (BASENP (NNPS Engineers)))) (VP (VP (VBD began) (PP (IN in) (BASENP (DT the) (NNS 1980s)))) (S (VP (VP (TO to) (VP (VB reduce) (NP (BASENP (DT the) (NN authority)) (VP (VBN granted) (PP (IN by) (BASENP (JJ nationwide) (NNS permits))))))) (CC and) (VP (TO to) (VP (VP (VB bar) (NP (BASENP (NN use)) (PP (IN of) (BASENP (DT the) (NNS permits))))) (PP (IN in) (BASENP (JJ certain) (ADJP (RB ecologically) (JJ sensitive)) (NNS areas)))))))))) (PERIOD .))