On Tuesday, Sept. 15 the Pennsylvania Environmental Quality Board (EQB), one of over two dozen boards and committees and commissions part of the state Department of Environmental Protection (DEP), will hold a hearing and cast a key vote on Gov. Tom Wolf’s proposal to force the state to join the Regional Greenhouse Gas Initiative (RGGI). The EQB is one of four rulemaking authorities within the DEP–perhaps the most powerful DEP committee, with the power to create new binding regulations affecting every citizen in the state. Although tomorrow’s vote won’t be the final vote enacting Wolf’s plan, it is an important vote, a key vote, and will significantly advance the process of joining RGGI. One EQB member, Mark Caskey, is sounding the alarm on RGGI, pledging to vote against it. MDN interviewed Mark last week. Below is a summary of our talk.