Sarah A. Slack

Partner

Sarah Slack is an environmental lawyer dividing her time between project development and redevelopment work, environmental compliance counseling, transactions, and environmental litigation. She is a partner in the firm’s Business Law Department and a member of the Environmental Regulation Practice Group. Sarah is also an active member in the firm’s Energy Sector where she acts as the subsector lead for our Energy Transition Team. Sarah has extensive experience counseling developer, investor, and lender clients in all aspects of renewable energy project development, including solar, wind, and battery storage projects. Sarah regularly counsels clients on matters related to environmental, social, and governance (ESG), including green claims and greenwashing considerations. In addition, Sarah assists clients with development, financing, and permitting considerations related to carbon capture and hydrogen projects, as well as on matters related to microgrids and EV Infrastructure development, as well as cleantech.

Sarah counsels clients across a variety of industry sectors, from traditional energy and infrastructure matters to renewable energy projects, and from chemical producers to manufacturing companies. She has been involved in numerous development and redevelopment projects and has assisted with obtaining, renewing, and revising construction and operation permits, including permits related to federal and state wetlands, wastewater discharges, air emissions, and special status species.

Sarah has extensive experience counseling clients on the cutting edge of Clean Air Act, Clean Water Act, Superfund, FIFRA, TSCA, and RCRA enforcement, as well as citizen suit litigation, settlement strategies, and related cost recovery, insurance coverage, and indemnity disputes. She also provides counsel to clients regarding air emissions, waste management, underground storage tank compliance, and water discharge permitting and compliance, as well as a variety of compliance matters related to chemicals and chemical usage, including under California’s Proposition 65.

Awards and Recognition

  • Listed in Chambers USA: America’s Leading Lawyers for Business in the fields of natural resources and environmental law (2022-2024)
  • Named to Wisconsin Super Lawyers – Rising Stars® lists (2013-2015)

Affiliations

  • Chair Elect of the Environmental Law Section of the State Bar of Wisconsin

Presentations and Publications

  • Co-author, “Navigating to Net Zero: Regulatory Regimes and Market Trends Impacting Decisions,” Natural Resources & Environment (Summer 2023)
  • Co-author, “Crossing the Line: Navigating Multinational Corporation Chemical Compliance,” Natural Resources & Environment (Fall 2020)
  • Co-author, “Paris or No Paris, Auto Emissions May Fall,” Daily Journal (June 22, 2017)
  • Author, “When is a Pesticide Not a Pollutant? Never: An Analysis of the EPA’s Misguided Guidance,” 90 Iowa L. Rev. 1241 (2005)
27 February 2025 Foley Viewpoints

The Trump Administration: Developments in Environmental Policy

From the outset, key goals of the incoming Trump Administration have been: supporting fossil fuel development, ending incentives for renewable energy and energy transition, removing burdensome environmental regulations and policies, and stepping back action on climate change and environmental justice initiatives.
24 January 2025 Foley Viewpoints

Incoming Environmental Protection Agency (EPA) Personnel and Impact on Enforcement

To nobody’s surprise, it is already evident that President Trump’s second term will mark a significant shift in environmental regulation and policy from the Biden Administration.
16 December 2024 Deals and Wins

Foley Represents First Citizens Bank in $284M Financing for Dimension Energy

Foley & Lardner LLP represented First Citizens Bank as lead debt syndicator in Dimension Energy’s (Dimension) recent $284 million construction and tax equity bridge loan. The financing will support a 122 MWdc portfolio of 30 community solar projects across seven states.
13 August 2024 Deals and Wins

Foley Represents MOGAS Industries in Sale to Flowserve

Foley & Lardner LLP served as legal advisor to MOGAS Industries, a privately held, Houston-based provider of mission-critical severe service valves and associated aftermarket services, in its sale to Flowserve Corporation.
06 June 2024 Press Releases

Foley Achieves Top Rankings in Chambers USA 2024

Foley & Lardner LLP is pleased to announce that it is again recognized by Chambers & Partners as one of the leading law firms in the country in the 2024 edition of Chambers USA, America’s Leading Lawyers for Business.
23 June 2024 Events

Infocast CCS/ Decarbonization Project Development, Finance & Investment Summit

Foley & Lardner LLP will be attending the Infocast CCS/ Decarbonization Project Development, Finance & Investment Summit at the Hilton Houston Post Oak.