Upon commencement of commercial operation of each new utility unit under subpart 1 of part B, the unit shall comply with the requirements of subsection (a)(1).
( ( Upon ( commencement ( of ( ( commercial operation ) ( of ( ( each ( new ( utility unit ) ) ) ( under ( ( subpart 1 ) ( of ( part B ) ) ) ) ) ) ) ) ) ) ( , ( ( the unit ) ( ( shall ( comply ( with ( ( the requirements ) ( of ( ( subsection ( -LRB- ( a -RRB- ) ) ) ( -LRB- ( 1 -RRB- ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Upon) (NP (NP (NN commencement)) (PP (IN of) (NP (NP (JJ commercial) (NN operation)) (PP (IN of) (NP (NP (DT each) (JJ new) (NN utility) (NN unit)) (PP (IN under) (NP (NP (NN subpart) (CD 1)) (PP (IN of) (NP (NN part) (NN B))))))))))) (, ,) (NP (DT the) (NN unit)) (VP (MD shall) (VP (VB comply) (PP (IN with) (NP (NP (DT the) (NNS requirements)) (PP (IN of) (NP (NP (NP (NN subsection)) (PRN (-LRB- -LRB-) (X (SYM a)) (-RRB- -RRB-))) (PRN (-LRB- -LRB-) (NP (CD 1)) (-RRB- -RRB-)))))))) (. .)))
subsection a1 need also me complied with other a variety of different conditions.
( ( subsection a1 ) ( ( need ( also ( me ( complied ( with ( ( other ( a variety ) ) ( of ( different conditions ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN subsection) (NNS a1)) (VP (VBP need) (S (ADVP (RB also)) (NP (PRP me)) (VP (VBD complied) (PP (IN with) (NP (NP (JJ other) (DT a) (NN variety)) (PP (IN of) (NP (JJ different) (NNS conditions)))))))) (. .)))