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The Biden administration is slowly grinding away at an important regulatory task: reconsidering the air quality standards for particulates and ozone. Setting those standards is an arduous and time-consuming process, requiring consideration of reams of technical data. For instance, a preliminary staff report on fine particulates (PM2.5) is over 600 pages long. When the process is done, the result will not only be better protection of public health. It will also be a reduction in emissions of carbon dioxide and other global warming agents.

In describing cost-benefit analysis to students, I've often told them that the "cost" side of the equation is pretty simple. And it does seem simple: just get some engineers to figure out how industry can comply and run some spreadsheets of the costs. But this seemingly simple calculation turns out to be riddled with uncertainties, particularly when you're talking about regulating the energy industry. Those uncertainties need more attention in designing regulations.

State officials in California are leading an extensive multisector planning effort to develop the 2022 Scoping Plan, the third update to California’s climate mitigation strategy. The new plan will outline a pathway for statewide action toward reducing greenhouse gas emissions by 40% by 2030 and reaching net-zero emissions no later than 2045.

Arguments and judicial reasoning in administrative law cases usually focus on the case at hand. Indeed, the Administrative Procedure Act (APA) commands that narrow focus. The APA does not give the courts any role in shaping the laws governing administrative agencies, for that is what Congress does. Instead, it gives the courts a modest, albeit difficult responsibility: They may determine whether a particular agency action is arbitrary and capricious or contrary to law. Therefore, parties challenging an agency rule they disapprove of generally argue that the agency has violated some restraint stated in the statute or exercised its discretion in an arbitrary way. But in the U.S. Supreme Court case heard last week about the scope of EPA's authority to regulate greenhouse gas emissions (West Virginia v. EPA), coal companies relied heavily on a "parade of horribles" argument — a listing of bad things that might happen in future cases if the Court upheld EPA's interpretation of the Clean Air Act in the case before the Court.

Last fall, on the same day that the parties to the Paris Agreement gathered in Glasgow for their first day of their annual international climate meeting, the U.S. Supreme Court announced it would review an appellate court decision about the U.S. Environmental Protection Agency's authority to regulate greenhouse gases from fossil fuel power plants under the Clean Air Act. Fast forward half a year: On February 28, the day that the U.N. Intergovernmental Panel Climate Change issued its sobering report on climate adaptation and harms to human and planetary well-being, the court heard oral arguments in the case -- West Virginia v. EPA. Once again, it was a split-screen reality.

The environmental justice movement began with a focus on neighborhood struggles against toxic waste facilities and other local pollution sources. That focus now includes other measures to ensure that vulnerable communities get the benefit of climate regulations. The most powerful tool for assisting those communities, however, may be the National Ambient Air Quality Standards (NAAQS). The NAAQS (pronounced "knacks") are supposed to be the maximum amount of air pollution consistent with protection of public health and welfare.

In its first year in office, the Biden administration has, to its credit, reversed a number of anti-environmental policies initiated by former President Donald Trump. Gone is the previous administration's infamous "two-for-one" policy, under which federal agencies had to eliminate two regulatory requirements for every new regulation they proposed. Numerous Trump-era initiatives that cut back needed air and water quality protections have also been rescinded. And, thankfully, the U.S. Environmental Protection Agency (EPA) and other federal agencies are once again focused on responding to the mounting dangers posed by the climate crisis. Given these steps forward, it is perplexing that the current administration has not yet restored a critical environmental tool that has proven workable and highly beneficial in past years: EPA's Supplemental Environmental Projects (SEPs).

Last week, my colleagues and I advocated for a pair of clean water bills in Maryland and Virginia, which were spurred by research completed by the Center for Progressive Reform (CPR). This two-part blog series explains why. Part I, which ran yesterday, explores our collaborative work to protect clean drinking water in Maryland. Today, we look at our efforts to protect Virginia’s health and environment from toxic chemical spills.

Last week, my colleagues and I advocated for a pair of clean water bills in Maryland and Virginia, which were spurred by research completed by the Center for Progressive Reform (CPR). One would create a Private Well Safety Program in Maryland, and the other would create an aboveground chemical storage tank registration program in Virginia. Both laws are sorely needed. This two-part blog series explains why. Today’s piece looks at our efforts to protect clean drinking water in Maryland; check back tomorrow for Part II, which explores our collaborative efforts to protect Virginians from toxic chemical spills.