atmosphere that absorb and reemit infrared radiation, including
carbon dioxide, nitrous oxide, methane, hydrofluorocarbons,
perfluorocarbons and sulfur hexafluoride.
"Multistate target." A limit on greenhouse gas emissions
that applies to the total emissions of greenhouse gases in this
Commonwealth and one or more other jurisdictions, including
states and cities of the United States and the District of
Columbia.
Section 4. Environmental Quality Board.
The board shall have the power and its duties shall be to:
(1) Adopt by regulation a Statewide greenhouse gas
emissions limit, to be achieved by 2025, that is equivalent
to a level of emissions 30% or more below baseline emissions
or to adopt a multistate greenhouse gas emissions limit if
the board finds that the limit will:
(i) by 2025, achieve greater emission reductions
across all participating jurisdictions than would be
achieved in those jurisdictions if the Commonwealth
adopted its own limit; and
(ii) be more cost effective.
(2) In consultation with the Climate Change Advisory
Committee, develop and promulgate regulations necessary to
cost effectively meet the limit adopted under this section.
The regulations shall be consistent with the climate change
action plan and may include any of the following:
(i) Market-based mechanisms, such as the imposition
of emission caps and a system for the purchase,
redemption and trading of carbon dioxide allowances that
represent units of emissions.
(ii) Performance-based standards for sources of
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