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raenda lions on sinir regulation?, -and such regulations may 
not be amended to revise the requirements described in sub- 
section (a) (1) unless the Secretary has provided the ad- 
visory committee with a reasonable opportunity to provide 
him its recommendations on such revision. 
“ (c) The regulations required by subsection (a) shall 
be initially promulgated within one year of the date of the 
enactment of this part and shall take effect upon the expira- 
tion of one hundred and eighty days from the date of their 
promulgation. 
“ (d) The Secretary shall provide for an annual review 
of the regulations required by subsection (a) to determine if 
their requirements continue to protect the public health and 
safety and the environment. 
“(e) If the Secretary receives a petition for the pro- 
mulgation of a regulation to prescribe an additional require- 
ment under subsection (a) or to revise or repeal a require- 
ment contained in a regulation promulgated under that 
subsection, the Secretary shall either approve or deny the 
petition within one hundred and twenty days after the date 
the petition is received by the Secretary. If the Secretary 
approves such a petition, the Secretary shall, as soon as prac- 
ticable after the date the petition is approved, commence a 
proceeding as requested by the petition. If the Secretary 
II.R. 7418 2 
T5861 
