4.__Municipal petition for review of plan.__The commissioner shall review the pollution prevention plan of a facility upon receipt of a petition to review the plan submitted by the municipal officers in the municipality in which the facility is located.__The commissioner shall make a written determination on whether the plan meets the facility goals and guidelines of this chapter and explain the reasons for the determination.__If the commissioner determines that the plan is inadequate, the commissioner may require the owner or operator of the facility to make modifications pursuant to this section.

5.__Confidentiality.__Upon a satisfactory showing to the commissioner by the owner or operator of a facility required to submit information under this chapter that a progress report or plan summary developed under this chapter, if made public, would divulge methods, processes or other information entitled to protection, the commissioner shall hold as confidential that progress report or plan summary or a portion of that progress report or plan summary pursuant to section 1310-B.

Sec. 13. 38 MRSA §2309, sub-§§1 and 2, as enacted by PL 1989, c. 929, §7, are amended to read:

1. Data collection and dissemination. The commissioner shall develop the necessary information base and data collection programs to establish program priorities and; evaluate the progress of toxics use, toxics release and hazardous waste