Highlights

• Spencer Fane hires William J. Curtis to firm up its Environmental & Energy Law presence in St. Louis.
• He brings expertise in government investigations, carbon credits, energy credits, and environmental litigation.
• His work spans hazardous materials, CERCLA matters, mass torts, and cases involving DOJ, IRS, and EPA regulators.

Spencer Fane LLP, a full-service business law firm, has welcomed William J. Curtis as a partner in its Environmental and Energy Law practice in St. Louis.

The firm introduces him as an experienced lawyer with extensive work in government investigations, environmental litigation, syndicated conservation easements, carbon credits, energy credits, and cases involving the mix of environmental, energy, and tax law.

Read More: Is ESG Litigation the Next Big Corporate Risk?

Curtis handles matters involving agencies such as the U.S. Department of Justice (DOJ), Internal Revenue Service (IRS), Environmental Protection Agency (EPA), and other regulators.

This puts him in an area where complex legal issues surrounding environmental compliance and tax-related energy programmes arise.

His environmental practice spans regulatory enforcement actions connected with hazardous materials, including mercury, PCBs, lead, benzene, and PAHs.

Also Read: 3,099 Climate Cases Filed Globally by Mid-2025: Report

His experience covers mass torts, class actions, CERCLA matters, and environmental citizen suits, and he also works with experts such as hydrologists, toxicologists, epidemiologists, and engineers.

Amy Mistler, office managing partner for Spencer Fane in St. Louis, said: “Bill joins us with extensive experience representing clients in some of the most challenging environmental, energy and tax disputes.

“His ability to navigate the highly nuanced confluence of environmental, energy, and tax law will be a fantastic addition to our team’s diverse talents, and we look forward to how he will contribute to the collaborative insights that guide quick and successful resolutions for our clients.”

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Source: Spencer Fane