Podcast - Diamond Alternative Energy, LLC v. EPA: The Intersection of Constitutional and Environmental Law
SCOTUS Clean Air Act Cases: What’s New?
Rewriting the Rules: The Supreme Court's Landmark Decision on Clean Water Act Permits
On-Demand Webinar | Regulatory Uncertainty and Linear Infrastructure Projects: Where Are We and What’s Ahead?
PFAS: Increasing Regulations and Managing Legal Liability
On-Demand Webinar | Linear Infrastructure Redux: Adapting Your Projects to Meet the New Regulatory Climate
The Current and Future Landscapes of EPA Criminal and Civil Enforcement
On-Demand Webinar | The New NEPA Regulations: A Practical Guide to What You Need to Know
One-on-One with David Fotouhi, Acting General Counsel at the EPA
Volatile Times in Vapor Intrusion Regulation: A Legal and Technical Update
[WEBINAR] Fairly (or Unfairly?) Traceable: Are Discharges Through Groundwater Subject to the Clean Water Act?
[WEBINAR] Update on the California Environmental Quality Act: What’s New for 2018
The Environmental Defense Fund, Environmental Integrity Project, Natural Resources Defense Council, and Sierra Club (collectively, “EDF”) filed in the United States Court of Appeals for the District of Columbia Circuit an...more
As reported in our May 14, 2025, blog item, on May 12, 2025, the U.S. Environmental Protection Agency (EPA) denied a petition filed under Section 21 of the Toxic Substances Control Act (TSCA) seeking to prohibit the use of...more
The Environmental Integrity Project and Kentucky Resources Council (collectively, “EIP”) filed a June 9th Title V Petition to Object (“Petition”) before the United States Environmental Protection Agency (“EPA”) related to...more
On May 16, in Texas v. EPA, the 5th Circuit Court of Appeals rejected EPA’s nonattainment designation for two counties in Texas. What I find most interesting about the case is the reaction to it. Inside EPA (subscription...more
On May 16, 2025, the U.S. Court of Appeals for the Fifth Circuit issued a significant ruling in a longstanding dispute between the Texas Commission on Environmental Quality (TCEQ) and the U.S. Environmental Protection Agency...more
The Center for Biological Diversity (“CBD”) filed a May 8th Clean Air Act Title V Petition to Object (“Petition”) before the United States Environmental Protection Agency (“EPA”) relating to Bargath, LLC for the Hyrup...more
One hundred environmental organizations transmitted an April 21st letter to the United States Environmental Protection Agency (“EPA”) Administrator asking that the federal agency: …maintain and promptly implement a vital,...more
The Center for Biological Diversity (“CBD”) filed an April 3rd Clean Air Act Title V Petition to Object (“Petition”) before the United States Environmental Protection Agency (“EPA”) related to DC Operating Company, LP for the...more
Less than a month after the Environmental Protection Agency (EPA) published environmental operational standards and greenhouse gas emission regulations for owners and operators of heavy-duty vehicles, including major freight...more
On Tuesday, in Ohio v. EPA, the D.C. Circuit Court of Appeals denied several challenges to EPA’s decision to restore California’s authority under § 209(b) of the Clean Air Act to regulate emissions from motor vehicles. It’s...more
Earlier this month, the District of Columbia Court of Appeals vacated most of EPA’s startup, shutdown, and malfunction SIP Call. The Court’s rationale boils down to EPA’s failure to make a predicate finding that the SIP call...more
On February 7, 2024, EPA finalized a rule lowering the primary annual National Ambient Air Quality Standard for PM2.5 to 9.00 ug/m3. This is a significant reduction from the current 12.00 ug/m3 standard and a victory for...more
This is a brief roundup of recent federal court environmental and regulatory law decisions from the federal courts over the past few months, including the much anticipated ruling in Sackett, et ux., v, Environmental...more
Last week, D.C. Circuit Court of Appeals rejected challenges to EPA’s “Revised Cross-State Air Pollution Update Rule”. The Court found that the Rule was “an appropriate exercise of EPA’s statutory authority”....more
Earlier this month, United States District Court Judge Stephen Wilson held that NL Industries was not liable under CERCLA for air emissions of lead because such emissions did not constitute “disposal” within the meaning of...more
As noted in an April 27th blog post, the Arkansas Department of Energy & Environment – Division of Environmental Quality (“DEQ”) filed a Complaint for Declaratory and Injunctive Relief (“Complaint”) in the United States...more
A few considerations practitioners should keep in mind when dealing with contamination involving per- and polyfluoroalkyl substances (PFAS) contamination. The PFAS Action Act of 2021 passed in the House and was received in...more
In January, I noted that Ameren Missouri had surrendered in its defense of the NSR enforcement action brought by DOJ with respect to the Rush Island generating facility. Ameren Missouri submitted to the Court a proposal to...more
The Chesapeake Legal Alliance recently won a notable victory for the Assateague Coastal Trust in a successful challenge to the Maryland Department of Environmental Protection’s issuance of a state NPDES general permit for...more
The evidence of the harm resulting from PM2.5 exposures keeps rolling in. Earlier this month, Environmental Research published an article titled “Global mortality from outdoor fine particle pollution generated by fossil fuel...more
On his first day in office on January 20, 2021, President Biden signed an Executive Order titled, “Protecting Public Health and the Environment and Restoring Science to Tackle the Climate Crisis” (the Order). The Order...more
On December 23, 2020, EPA formalized its decision to leave the ozone NAAQS unchanged, at 70 ppb. I don’t think that this decision is in the same category of egregiousness as EPA’s recent decision not to reduce the PM2.5...more
Yesterday, EPA finalized its decision to retain the existing PM2.5 NAAQS of 12 ug/m3, rejecting substantial scientific evidence that PM2.5 causes significant harm at concentrations below 12 ug/m3. In fact, as noted in one of...more
U.S. Shale Producers Race for Federal Permits Ahead of Presidential Election - "Federal permitting in the largest U.S. oilfield in the Permian Basin, located in Texas and New Mexico, is up 80 percent in about the last three...more
EPA filed a status report on October 15 in the slow-moving mercury and air toxics (MATS) litigation, which is now Murray Energy Corp. v. EPA, No. 16-1127 (D.C. Cir., filed April 26, 2016). The case is a challenge to EPA...more