Environment: regulatory in United States

Arnold & Porter

With the ability to draw upon expertise of a strong pool of attorneys across all levels of seniority, Arnold & Porter is rated as one of the top environmental practices in the country. Clients operating in a host of industry sectors regularly seek the group’s representation in regulatory compliance obligations and enforcement proceedings under the full range of environmental statutes, including the Clean Air Act (CAA), which is a key area of strength for the department. The team’s climate change expertise extends to renewable energy, environmental assessment of climate impacts under NEPA, state and local climate regulations, and related litigation. Additionally, the department stands out for its strong track record in chemical regulatory issues, including TSCA and California Proposition 65. Major infrastructure projects’ permitting and environmental reviews are other areas of activity for the team, which is under the leadership of Brian Israel  in Washington DC. Jonathan Martel is a leading name for Clean Air Act regulatory mandates, while Lawrence Culleen is the name to note for EPA regulatory programs that govern chemicals, pesticides and antimicrobials. Ethan Shenkman, who brings a wealth of government experience, assists clients with compliance concerning CAA regulations and greenhouse gas emissions. All named practitioners are based in DC.

Practice head(s):

Brian Israel

Other key lawyers:

Jonathan Martel; Lawrence Culleen; Ethan Shenkman; Zachary Fayne; Sarah Grey

Key clients

BP / Atlantic Richfield

Honeywell International

The Chemours Company

Donlin Gold, a JV between Barrick Gold Corporation and NOVAGOLD Resources




Growth Energy

American Cleaning Institute

Work highlights

  • Serving as lead environmental counsel to Chemours on a range of regulatory, enforcement, and litigation matters relating to the discovery of chemicals in the Cape Fear River in North Carolina attributable to the client’s facility, including a chemical referred to as GenX.
  • Defending Donlin Gold against multifaceted environmental challenges and securing Army Corps of Engineers and Bureau of Land Management permits for one of the nation’s largest gold mines, located in Alaska.
  • After several years of negotiations involving numerous stakeholders helped achieve a collaborative resolution for BP of an effort in Whatcom County, Washington to reduce greenhouse gas (GHG) emissions from fossil fuel refineries.

Beveridge & Diamond, P.C.

Led from Baltimore and Washington DC by Pamela Marks and Paul Hagen, Beveridge & Diamond, P.C.‘s environmental team has the breadth of expertise to handle a tremendous range and volume of regulatory work for a variety of clients facing cutting-edge legal issues at the federal, state and local level. Fully dedicated to environmental law, the firm stands out in the market for its established reputation of acting for Fortune 500 clients and major public entities in an array of industry sectors in nationwide matters involving PFAS regulatory schemes, environmental issues regarding supply chain due diligence, circular economy, climate change, environmental justice and environmental, social, and governance (ESG) issues. Its air and climate change practice has unparalleled experience of assisting refineries, chemical plants and other industries in securing permits for major expansions, while the water group is routinely engaged by companies, states and municipalities in challenges posed by federal and state water laws. Karen Hansen, who is based in Austin, oversees the water practice and focuses on programs for regulating and permitting water discharges and water supply. In the same office, Maddie Boyer takes the lead on international environmental, health and safety standards mandates, with a particular emphasis on Latin America. ESG matters are a core area of focus for Lauren Hopkins in Seattle, where Allyn Stern advises on environmental compliance and government regulations, given her former experience as EPA regional counsel. Premier environmental lawyer John Cruden, whose outstanding experience covers compliance, civil and criminal enforcement, is a key individual in DC.

Practice head(s):

Pamela Marks; Paul Hagen

Other key lawyers:

John Cruden; Karen Hansen; Maddie Boyer; Lauren Hopkins; David Weber; Allyn Stern; Julius Redd; Parker Moore; Sarah Munger

Key clients

McLane Company

Volkswagen AG

Johnson Controls Inc.

Contra Costa Transportation

Mountain Valley Pipeline

City and County of San Francisco

Kinder Morgan Energy Partners

United Airlines, Inc.

Los Angeles Metropolitan Transportation Authority

Work highlights

  • Providing ongoing national environmental compliance and counseling to McLane across 27 states.
  • Representing multinational companies and municipal clients in complex environmental disputes and high-profile project management, corporate responsibility, environmental compliance, and investigations related to environmental justice and Title VI of the Civil Rights Act of 1964 enforcement.
  • Regularly advising Fortune 100 Companies on cutting-edge regulatory issues related to product stewardship, circular economy, and corporate sustainability/ESG.

Hunton Andrews Kurth LLP

The highly specialised environmental law practice at Hunton Andrews Kurth LLP‘s provides comprehensive advice to its corporate client roster based in the United States and abroad, but is perhaps best known for its involvement in high-profile litigation, environmental rulemakings and regulatory developments. With a deep bench of lawyers in Washington DC and San Francisco, the practice is singled out for its experience with air-related matters, having advised numerous energy and chemicals clients on regulatory compliance, enforcement actions, policy issues, waste management and site clean-up. Furthermore, its broad service offering also covers multi-jurisdictional regulatory issues involving natural resources, climate change and water on behalf of clients from a myriad of industries, including manufacturing, real estate development and mining. The environmental group is jointly led by Washington DC-based Eric Murdock and Deidre Duncan, the latter of whom is a preeminent figure for water and natural resources regulations. Chuck Knauss, who maintains a broad environmental practice focused on the oil and gas, and transportation sectors, is another noteworthy practitioner in DC. Former general counsel for the US Environmental Protection Agency (EPA) Matthew Leopold is ‘incredibly knowledgeable and experienced‘ in major federal environmental statutes in the permitting, compliance and enforcement contexts. Also in DC, Kerry McGrath is frequently retained by major industrial groups in relation to matters under the federally regulated “waters of the United States” and NPDES permitting issues. On the West Coast, Shannon Broome is recommended for Clean Air Act matters, energy transition and climate change. She sits in San Francisco.

Practice head(s):

Eric Murdock; Deidre Duncan

Other key lawyers:

Shannon Broome; Chuck Knauss; Kerry McGrath; Matthew Leopold; Andrew Turner; Samuel Brown; Clare Ellis


‘Excellent knowledge of all federal environmental regulations and how to navigate them. Access and familiarity with key regulators is key for project execution. Good problem solvers. Multiple subject matter experts in different parts of the country helps work with district and regional agency offices on permitting issues. They have been responsive to innovative billing schemes and are our go-to firm for federal permit issues.’

‘Deidre Duncan is the best outside counsel I have ever worked with. Team player with great communication skills. Knowledgeable, practical, connected, has an excellent temperament and a positive yet realistic outlook. Looks for innovative yet business-focused solutions to difficult issues but is frank enough to let us know when our desired solution may not be realistic.’

‘Hunton has an amazing team of experts in environmental law. The diverse, well-rounded team, including former senior officials, really provide amazing perspectives and knowledge. Yet at the same time they are available, resourceful, mindful of billing and humble. I really appreciate the Hunton team.’

‘Matt Leopold is incredibly knowledgeable, experienced, skilled and wiling to do whatever it takes to get the job done. We really appreciate working with him. This combination of experience and skill with availability and humility is quite rare.’

Key clients

Marathon Petroleum Corporation and Speedway LLC

NWP 12 Litigation Group

Air Permitting Forum and Auto Industry Forum

Pinnacle West Capital Corporation/Arizona Public Service Company

Work highlights

  • Representing Marathon Petroleum Corporation and Speedway LLC in climate change litigation in California, in claims by cities and counties that the client, along with other oil and gas companies, is liable under state common law nuisance and product liability theories.
  • Successfully defended an Arizona utility’s NPDES permit against an eNGOs’ appeal to EPA’s Environmental Appeals Board, which is now on appeal to the 9th Circuit.
  • Secured a crucial victory in the US Supreme Court for NWP 12 Litigation Group, a coalition of oil and gas industry groups.

Latham & Watkins LLP

The environmental regulatory practice at Latham & Watkins LLP ‘is unparalleled in its technical excellence, legal and policy sophistication‘. Testament to this is its presence in a lead role capacity on major environmental legal and regulatory matters that have shaped the market over the past four decades. The team is well-versed in the entire spectrum of regulatory matters, cutting across air and water quality, climate change, and energy and natural resources projects. Also featuring heavily on the team’s workload is the representation of clients before federal and state agencies on major enforcement actions and rulemakings. Jean-Philippe Brisson  in New York and Christopher Norton  in Orange County oversee the environmental, regulatory and transactional group, while the environment, land and resources department is co-chaired by James L. Arnone  in Los Angeles and Janice M. Schneider  in Washington DC. Schneider has more than 30 years’ experience in environmental law, advising on regulatory, litigation and project-related matters. Also in the DC office, Stacey L. VanBelleghem ‘s ‘sweeping skill set encompasses the Clean Air Act, the Endangered Species Act, the National Environmental Policy Act, and the National Historic Preservation Act, as well as FIFRA, RCRA and the CWA‘; she is singled out for her experience in climate change issues. Associate Devin O’Connor in DC has advised on environmental legal issues in the context of major project development and administrative rulemaking. Key contacts in New York include Kegan Brown  and Gary Gengel , both of whom undertake work in the environmental litigation and regulatory spaces.

Practice head(s):

James L. Arnone; Janice M. Schneider; Jean-Philippe Brisson; Christopher Norton

Other key lawyers:

Stacey VanBelleghem; Gary Gengel; Kegan Brown; Stijn van Osch; Devin O’Connor


‘Latham’s environmental regulatory practice is unparalleled in its technical excellence, legal and policy sophistication, and business focus. They understand how to advocate to regulators, using the legal, technical and policy arguments that are most likely to be successful – and they recognize that it is far better to obtain regulatory agreement up front than to litigate afterwards. But they also know that most significant regulatory decisions are challenged by eNGO’s, so the Latham attorneys are always focused on ensuring that the administrative record is strong enough to withstand judicial review – or to overturn an adverse decision from a regulator.’

‘Stacey VanBelleghem’s sweeping skill set encompasses the Clean Air Act, the Endangered Species Act, the National Environmental Policy Act, and the National Historic Preservation Act, as well as FIFRA, RCRA and the CWA. She brings her formidable legal, technical and advocacy talents to bear in all of her matters, but always with an eye to accomplishing the client’s business goals as efficiently as possible. The range of matters for which she has achieved successful conclusions for clients is truly striking – from power plant siting issues on Indian lands to offshore wind to pesticide endangered species impacts. Stacey covers the gamut.’

Key clients

8 Minute Solar Energy

Avangrid Renewables

Avangrid Renewables

China International Business Dialogue on Environmental Governance (CIBDEG)

FivePoint/Newhall Land & Farming

Monsanto (acquired by Bayer)

National Coalition for Advanced Transportation

Owens Corning

San Diego Gas & Electric Company


Western States Petroleum Association and Regulatory Flexibility Group

Work highlights

  • Trusted counsel to a number of significant energy and finance clients on their most significant on-shore renewable projects across the US, including Terra-Gen, Avangrid Renewables, and 8 Minute Solar Energy.
  • Representing NCAT, a coalition of electric vehicle and electric infrastructure companies, in DC Circuit litigation challenging the Environmental Protection Agency and National Highway Traffic Safety Administration’s decision during the Trump administration to roll back California’s leading vehicle greenhouse gas emissions standards.
  • Has long represented Monsanto, the global agriculture company that has been acquired by Bayer, in a number of regulatory matters before Environmental Protection Agency (EPA) and in related litigation.

Baker Botts L.L.P.

With a particular focus on the energy sector, Baker Botts L.L.P. ‘s environmental, safety, and incident response team remains a popular choice among a variety of clients, which are appreciative of its ‘incredible range of knowledge and experience‘ and ability to provide comprehensive services in the context of enforcement actions, permitting processes and crisis management. Offering coast-to-coast coverage, the team is experienced in all media (air, water and waste) and every major environmental statute and regulations, but garners praise for its notable presence in complex air emission programs and strategies, and site clean-ups. Permitting, compliance, enforcement and spill responses involving water quality issues are other typical mandates for the group, which is headed by Scott Janoe in Houston. Also based in the Houston office, Scott Elliott  is sought after by clients from the energy and chemical sectors in matters relating to crisis response and compliance obligations. Debra Jezouit, who works out of Washington DC, is recognised for her experience in Clean Air Act and climate change issues. The arrival in April 2021 of Alexandra Dunn, who formerly served as the Assistant Administrator for the U.S. Environmental Protection Agency’s Office of Chemical Safety and Pollution Prevention, enhances the firm’s capabilities in the rule-making and emerging contaminants fields.

Practice head(s):

Scott Janoe

Other key lawyers:

Scott Elliott; Debra Jezouit; Alexandra Dunn; Stephanie Bergeron Perdue; Megan Berge; Paulina Williams


‘Baker Bott has an incredible range of knowledge and experience. They have a number of individuals with experience at both federal and state agencies. This practical knowledge helps them to “flip-the-map” and see issues from all aspects.’

‘Paulina William’s breadth and depth of knowledge is only eclipsed by her responsiveness and compassion. She is available at any time, day or night. I have yet to pose the environmental question or issue that she couldn’t navigate through her team.’

Key clients


Work highlights

  • Representing Enterprise Products in responding to and resolving a U.S. Environmental Protection Agency inspection and follow-on Clean Air Act Section 114 Information Requests covering the Baton Rouge Fractionator and Propylene Concentrator Unit.

Bracewell LLP

Bringing together strong capabilities in legal and policy matters with knowledge in media relations and lobbying, Bracewell LLP is well positioned to provide the full-range of environmental regulatory advice across the country.  Showcasing extensive experience in issues ranging from air quality and climate change to water quality, waste, endangered species, and wetlands, the department is seen regularly acting for clients from the oil and gas, power, chemicals, mining, technology and manufacturing industries in relation to enforcement defense, major accident response, and legislative matters. Typical mandates also include regulatory advocacy related to infrastructure permitting for oil and natural gas pipelines across the US and Superfund matters. The ‘go-to practice for environmental matters‘ is jointly led by Jason Hutt , who has a wealth of experience in administrative enforcement actions, major industrial incidents and infrastructure permitting, and Clean Air Act and climate change specialist Jeffrey Holmstead . Both sit in the Washington DC office, where Kevin Ewing  stands out for his involvement in permitting-related mandates and climate change issues. Permitting, compliance and enforcement matters in association with onshore and offshore wastewater discharges are key areas of expertise for Sara Burgin  in Austin. Kevin Collins , who is also based in Austin, is counsel of choice for several energy and petrochemical clients in relation to investigations of environmental and process safety incidents. Also in Austin, Timothy Wilkins is seasoned in ESG issues, energy transition and environmental permitting.

Practice head(s):

Jason Hutt; Jeffrey Holmstead

Other key lawyers:

Sara Burgin; Kevin Ewing; Kevin Collins; Ann Navaro; Matthew Paulson; Scott Segal; Whit Swift; Timothy Wilkins; Brittany Pemberton


‘Tim Wilkins stands out a a top notch environmental lawyer.’

‘The team was very well-versed in a regulatory issue that most companies do not deal with on a regular basis, and offered an overview of expectations, process and timing from the beginning. The knowledge of the unique topic at hand provided immediate comfort in an otherwise anxious situation dealing with the federal government.’

‘Each of the individuals on the team complemented each other, had different experiences (unique from a law firm team perspective), and occasionally had competing views which served to facilitate a thorough discussion. Both Bob Wagman and Jason Hutt were excellent at communicating their thoughts and experiences, and setting expectations.’

‘They have attorneys knowledgeable in every area we’ve needed assistance and their involvement has facilitated successful outcomes/results in every case, including without limitation: federal advocacy, state advocacy and SEC reporting.’

‘They have been our go-to practice for environmental matters for well over a decade. They’re smart, efficient, knowledgeable, well connected and have a breadth that spans all our needs, whether state or local and whether emissions or solid waste, for example.’

Key clients

Air Liquide USA, LLC

Sinclair Oil Corporation

Big West Oil, LLC.

Delek U.S. Holdings

Equinor Wind (f/k/a Statoil Wind)

Denka Performance Elastomer

Kinder Morgan, Inc.,

Cheniere Energy, Inc.

Par Pacific

Work highlights

  • Advising Equinor on numerous aspects of its US offshore wind development portfolio, including permitting, environmental impact analysis, strategic communications, government affairs, energy regulatory, intellectual property, labor, commercial, real estate and tax.
  • Assisting Gulf Coast Sequestration in obtaining the necessary permits and approvals, including a Class VI Underground Injection Control (“UIC”) permit, for a project that would be the largest carbon capture storage project in the United States, and one of the largest in the world.
  • Representing a coalition of power companies that includes two of the largest three utilities in the country and four other major power companies, which involves extensive advocacy with EPA and legal and regulatory analysis to inform senior company officers about the potential regulatory programs they could be facing in the near future.

King & Spalding LLP

King & Spalding LLP houses ‘a top-shelf environmental legal team that is one of the best in the country‘. Practitioners are skilled at providing the full-array of environmental regulatory services across the US, but are particularly noted for their strength in California-related matters. Besides frequently acting for clients in the defense of enforcement actions brought by the EPA, and other state and federal agencies, the group has advised clients on all aspects of the environmental permitting process, crisis response and site remediation cases. Recent areas of growth for the team include cutting-edge issues pertaining to emerging chemicals, such as Ethylene Oxide (EtO) and Per- and Polyfluoroalkyl Substances (PFAS), and mobile source emissions. The team is led from Washington DC by Granta Nakayama, who is a recognised attorney in the market with an impressive track record in environmental enforcement actions, agency rulemakings and Congressional matters. Ilana Saltzbart , who is a former senior enforcement counsel at the EPA, is another key contact in DC for the biofuels industry, especially those engaged in Clean Air Act matters. Atlanta-based Adam Sowatzka maintains a nationwide practice handling civil and criminal environmental enforcement mandates, with a particular focus on wastewater cases and PFAS. The West Coast environmental, health and safety practice is managed by environmental trial lawyer Peter Hsiao, who builds on his chemical engineering experience to advise a variety of clients in environmental, natural resources and toxic tort law. He sits in the Los Angeles office. Marcella Burke leads the Houston-based environmental team; she is proficient in air, water, waste and toxic chemicals.

Practice head(s):

Granta Nakayama

Other key lawyers:

Adam Sowatzka; Peter Hsiao; Ilana Saltzbart; Marcella Burke; Patrick Runge


‘Based on my experience, K&S has a top-shelf environmental legal team that is one of the best in the country.’

‘The lawyers with whom I have worked at K&S work hard to understand their client’s business. They pro-actively apply their extensive experience to provide practical advice and representation in a manner that adds significant value to achieving our goals.’

‘The team communicates effectively and is available whenever we need them for a matter or issue that has arisen.’

‘Peter Hsiao and the team he has assembled for us has been fantastic in supporting us, providing good counsel insofar as not only viewing legal issues in a vacuum but fully taking the time to understand the complexities and dynamics of our business. Therefore, providing a legal strategy that is well thought out and comprehensive.

‘King & Spalding’s size allows the firm to cover many legal bases, providing a deep bench of capacity, if we need it. Their environmental law team is exceptional.’

‘King and Spalding lives up to its reputation as a well-respected firm with high caliber attorneys.’

Key clients

Environmental Resources Management Southwest Inc.

Volkswagen AG


The Home Depot

Twin Pines Minerals, LLC

Honeywell International

Mueller Water Products

Sea Island Acquisition


Central Bering Sea Fishermen’s Association

Woodville Pellets

City of Murfreesboro, TN and Consolidated Utility District of Rutherford County, TN

Work highlights

  • Representing Chevron in the decommissioning of offshore oil and gas production platforms and related assets under Department of the Interior, Bureau of Ocean Energy Management, and Bureau of Safety and Environmental Enforcement, as well as State of California and local regulations.
  • Representing Volkswagen before the Environmental Protection Agency, California Air Resources Board, and the U.S. Department of Justice in widely publicized matters related to emissions from 2.0-liter and 3.0-liter diesel engine powered vehicles.
  • Lead counsel representing Honeywell at the LCP Chemicals Superfund Site, one of the largest Superfund sites in the Southeast, involving marsh and upland areas totalling more than 800 acres.

Morgan, Lewis & Bockius LLP

Split between Los Angeles and Princeton, Morgan, Lewis & Bockius LLP‘s environment group is well regarded for its wide-ranging expertise in multimedia enforcement actions, investigations, environmental remediation matters and natural resource damage assessments under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Major sources, including refineries and large manufacturing facilities, routinely seek the team’s assistance with regulatory and compliance advice in the context of large-scale energy and infrastructure projects permitting. Furthermore, attorneys offer clients expertise on climate change, the Toxic Substances Control Act (TSCA) and the burgeoning state and federal regulation of emerging contaminants such as 1,4-dioxane and per- and polyfluoroalkyl substances (PFAS). James Dragna in Los Angeles handles an array of environmental regulatory and crisis management matters on behalf of major energy, aerospace and manufacturing clients. He jointly oversees the environmental counselling and litigation department with John McGahren , who is based in Princeton. Rick Rothman  is a noteworthy practitioner in the Los Angeles office; he has in-depth knowledge of air and water quality issues, energy efficiency and Proposition 65. Regulatory compliance counseling and enforcement defense involving air quality, water quality, and hazardous substances are core areas of activity for LA-based David Brown. Also on the West Coast, Ella Foley Gannon  is a key contact in San Francisco for natural resource permitting and entitlements defense against judicial and administrative challenges.

Practice head(s):

James Dragna; John McGahren

Other key lawyers:

Rick Rothman; Ella Foley Gannon; Christopher McAuliffe; David Brown

Key clients

HollyFrontier Corporation

Superfund Settlements Project and the RCRA Corrective Action Project

CNA Holdings LLC (Celanese)

BKK Joint Defense Group

Stepan Company

Wallace Silversmiths de Puerto Rico, Ltd., a subsidiary of Lifetime Brands, Inc. (WSPR)

Port Authority of New York and New Jersey

Imperial County Air Pollution Control District

Work highlights

  • Serving as common counsel to BKK Working group, which  covers collaboration with regulators, including the California Department of Toxic Substance Control and the United States Environmental Protection Agency (EPA), on complex enforcement issues, investigation, and remedial issues.
  • Representing Stepan in matters involving overlapping oversight and enforcement by the EPA, US Army Corps of Engineers, Nuclear Regulatory Commission (NRC), Department of Justice (DOJ), and NJDEP related to the clean-up of the Maywood Chemical Company Superfund Site in Maywood, New Jersey.
  • Representing the Superfund Settlements Project and the RCRA Corrective Action Project, two leading industry advocacy groups that focus on the laws that govern management and clean-up of contaminated sites.

Van Ness Feldman LLP

Headquartered in Washington DC, Van Ness Feldman LLP's core strengths cut across environmental compliance, federal and state permitting, site clean-ups and internal investigations. The practice acts for a varied client roster, including major players from the oil and gas, power, manufacturing and infrastructure sectors, which often seek advice on environmental justice, air, water, land and waste regulatory and policy initiatives at the state and local level. Following changes to the Executive branch of the federal government, the firm’s recent work reflects a shift in the approach of new leadership at the Environmental Protection Agency and other federal agencies with regulatory authority affecting U.S. energy infrastructure development and operations, and federal land use and management. Regulation of stationary and mobile sources under the Clean Air Act (CAA), renewable fuel standards, and climate change matters continue to be areas of activity for the team. The latter is a key specialism for Kyle Danish , who is particularly focused on emissions trading, legislation under the CAA and corporate climate strategies. Co-chair Britt Fleming leads advice to automobile manufacturers, electric utilities and trade associations in relation to CAA and mobile-source matters. She oversees the group with Jonathan Simon , a key contact for project developers and state governmental entities, and Stephen Fotis .

Practice head(s):

Stephen Fotis; Britt Fleming; Jonathan Simon

Other key lawyers:

Kyle Danish; Gwendolyn Keyes Fleming; A. J. Singletary

Key clients

Doyon, LTD

Huna Totem Corporation

Los Angeles Department of Water & Power

Oglethorpe Power Corporation



The Chlorine Institute

The North Slope Borough

Toyota Motors North America

Wolf Trap Foundation for the Performing Arts

Vinson & Elkins LLP

Vinson & Elkins LLP positions itself as one of the go-to firms in the United States for environmental regulatory issues arising under every major environmental statute. The firm is particularly recognised for its capabilities in securing and defending contested air, water and wetlands permits for energy and industrial developments and multi-state projects involving NEPA and federal lands. Besides complex permitting mandates, the practice is also well versed in historical contamination issues and administrative proceedings before the Environmental Protection Agency (EPA). Former Assistant Attorney General (AAG) for the Environment and Natural Resources Division of the U.S. Department of Justice Ronald Tenpas  is a recognised environmental attorney, who concentrates his activity in civil and criminal investigations related to alleged environmental violations and litigation challenging new regulatory provisions. He co-heads the department from Washington DC. Fellow co-leader Larry Nettles  is based in Houston. Other individuals to note in the Houston office include Michael Wigmore , whose permitting experience spans upstream oil and gas development, pipelines, mining and manufacturing facilities, and Matthew Dobbins , who is recommended for environmental litigation, regulation and transactional matters.

Practice head(s):

Larry Nettles; Ron Tenpas

Other key lawyers:

Eric Groten; Michael Wigmore; Patrick Traylor; Matthew Dobbins; Brandon Tuck


‘Amazing. Dobbins Nettles = dream team’

‘Matthew Dobbins – what an incredible lawyer.’

‘The depth of knowledge is what sets Vinson & Elkins apart from other firms. The attorneys are experts, and provide great interaction with clients.’

‘Vinson & Elkins partner Patrick Traylor has done a great job in working with our company. We appreciate Patrick’s knowledge of the subject matter and desire to seek positive outcomes. Patrick does an excellent job.’

Key clients

Adelphia Gateway LLC

Blackstone Energy Partners

Blue Racer Midstream

Bluewing Midstream LLC

Daseke, Inc.

Enable Midstream

Enbridge/Valley Crossing Pipeline LLC

Endeavor Energy Resources, LP

Global Companies, LLC

Goldman Sachs

Greer Capital Corporation

Gulf Coast Ammonia

Jefferson Gulf Coast Energy Partners

Magellan Midstream Partners L.P.

NCS Multistage Holdings, Inc.

Northwoods Energy, LLC

Oasis Petroleum, Inc.

Pembina/Jordan Cove Energy Project

PennEast Pipeline Company, LLC

Popular Bank

Rosehill Resources

San Miguel Electric Cooperative

Sandy Creek Services

Securities Industry and Financial Markets Association (SIFMA)

SemGroup Corporation


Southwest Business Properties, Inc.

Spire Storage West

Targa Resources Partners

Texas Eastern Transmission LP

The Carlyle Group

Freeport-McMoRan Inc.


NextEra Energy, Inc.

Perpetua Resources

Work highlights

  • Recently concluded representation of San Miguel Electric Cooperative in an environmental property damage lawsuit where the plaintiffs asserted causes of action under tort, contract and Texas environmental statutory provisions.
  • Negotiating with the EPA regarding the form of clean-up the agency will require and who will implement the remedy in an effort to reduce the cost relating to an asbestos case from a facility Greer Capital was the landlord of, even though Greer Capital was not responsible for the contamination.
  • Advising multiple clients on midstream energy infrastructure development projects, helping them navigate the environmental review and approval process under the National Environmental Policy Act, the Clean Water Act, the Endangered Species Act, the National Historic Preservation Act, and similar federal and state statutes.


Dentons‘ environmental law team acts for clients from key industry sectors, including chemicals, in environmental litigation and regulatory compliance matters under a wide array of federal, state and local environmental laws. Recent activity showcases the group’s strength in chemical and pesticide regulation at the federal and state level, complex permitting and brownfield issues, and climate change. The team is often retained by emitters, exchanges, clean-tech project developers and governments in developing emissions compliance strategies and next-generation clean technologies. Department head Todd Silliman, who is based in Atlanta, has acted as lead counsel in matters under the Clean Water Act, Endangered Species Act, and National Environmental Policy Act. He receives key support from Robert Schuda in Los Angeles, whose areas of expertise include ESG issues, and compliance with clean air, soil and water laws.

Practice head(s):

Todd Silliman

Other key lawyers:

Robert Schuda

Key clients

Waste Management

Landmark Properties

Mason & Hanger Corporation

California Rice Commission and USA Rice Federation

Liberty Tire Recycling

Dow AgroSciences LLC

CropLife America

Spectrum Brands

Syngenta Corp Protection LLC

Work highlights

  • Represents Topgolf in all real estate and environmental matters involved in the acquisition, development, and operation of Topgolf’s facilities, including environmental due diligence.
  • Secured a favorable judgment on behalf of California Rice Commission confirming that rice grown in the United States is clean and healthy, and established health-based safe-harbor levels for certain naturally-occurring chemical elements, below which no Proposition 65 warnings are required.
  • Representing Dow AgroSciences LLC in a matter involving the regulation of crop protection chemicals in California under the California Food & Agricultural Code and matters involving California’s Safe Drinking Water and Toxic Enforcement Act (Proposition 65).

Greenberg Traurig LLP

Greenberg Traurig LLP has a strong profile for enforcement and regulatory proceedings before the EPA and state agencies. The team acts for major national companies and public bodies operating in the real estate, mining, energy and chemicals sectors in relation to a variety of complex regulatory matters encompassing clean air, clean water, endangered species and hazardous waste management. Brownfield development issues, permitting and crisis management in jurisdictions across the US also feature on the practice’s broad service offering. The department is under the joint leadership of Kerri Barsh  in Miami, who provides comprehensive advice in the environmental regulatory, climate change, wetlands and coastal permitting, and David B. Weinstein in Tampa. Houston-based Christopher L. Bell  stands out for his track record in civil and criminal enforcement actions and emergency incident response. Steven C. Russo in New York has notable experience in environmental permitting, NEPA and Brownfields redevelopment.

Practice head(s):

Kerri Barsh; David Weinstein

Other key lawyers:

Christopher Bell; Steven Russo; David Mandelbaum

Key clients

Embee Processing LLC; All Metals Processing of Orange County, LLC and E/M Coating Services; Curtiss-Wright Corporation

Tucson Electric Power Company

Arcadian Fiberoptic Project

Barrick Gold of North America

Checkers and Rally’s Drive-In Restaurants and Related Development, LLC

Teleflex Incorporated

Golden Spread Electric Cooperative

Genessee & Wyoming

Minera Andina del Sol S.R.L.


Work highlights

  • Acting as counsel for all Native American legal and regulatory matters associated with the Arcadian’s first-ever direct fiberoptic trunk line from Salt Lake City to Phoenix, and from Phoenix to Denver.
  • Advised Minera Andina del Sol S.R.L.regarding U.S. and international laws and treaties governing shipment of waste elemental mercury from Argentina.
  • Advising Quidnet Energy on th Federal and New York State environmental legal requirements applicable to the siting and operation of a single approximately 1 to 2 MW, geo-mechanical pumped storage facility.

Paul Hastings LLP

A go-to destination for high-end matters involving complex and emerging areas of policy and regulation, the environmental group at Paul Hastings LLP was substantially strengthened following the November 2020 addition of a four-member environmental team from Baker Botts L.L.P., including partners Chris Carr and Navi Dhillon. Both practitioners have a wealth of experience in bet-the-company litigation, in tandem with their robust environmental and energy regulatory practices. Bringing together a combination of legal, policy and technical skills, the group is skilled at negotiating environmental review provisions and federal and state permitting, especially in the context of solar energy facilities, and regularly represents clients in multi-jurisdictional actions related to hazardous materials and pollution laws. Carr is counsel of choice for major solar developers; he oversees the San Francisco-based practice with Deborah Schmall , a preeminent expert in hazardous material regulation and enforcement defense in California. Gordon Hart  is proficient in the environmental aspects of real estate developments, remediation and CEQA litigation, while Peter Weiner  is singled out for playing a significant role in major policy and regulatory matters for clients in the renewable energy sector. All named practitioners are based in San Francisco.

Practice head(s):

Chris Carr; Deborah Schmall

Other key lawyers:

Navi Dhillon; Gordon Hart; Peter Weiner; Jill Yung


‘Peter Weiner and Jill Yung have established an expansive relationship with key decision-making officials within the federal and state governments. Through their relationships and previous experiences working with these people, they are able to provide invaluable insight as to what agencies are looking for.’

‘Often times, projects get bogged down at the staff level and it can be difficult to understand or obtain information from an agency. Jill Yung and Peter Weiner’s direct connection to the most senior level people is extremely helpful in understanding the issue, their experience in completing other similar projects and the precedent that has been set is considerable in understanding how to reduce risk and keep your own project on schedule.’

Key clients

Terra-Gen Power, 8minute Solar Energy and EDF Renewables

West Basin Municipal Water District

8minute SolarEnergy, LLC

AT&T Inc./AT&T Services Inc./Pacific Bell Telephone

Green Diamond Resources Company

Western Digital Technologies / Western Digital Corporation

Picayune Rancheria of the Chukchansi Indians

Genentech, Inc., a member of the Roche Group, and Hoffmann-La Roche Inc.

Oakland Athletics

Recurrent Energy


Intersect Power

The Boeing Company

Associate Capital / California Barrel Company

The Related Companies (Related Santa Clara LLC)


Credit Suisse

General Electric

Work highlights

  • Advising on RCRA corrective action remediation at Roche’s former primary manufacturing campus in New Jersey, which the New Jersey Department of Environmental Protection has called one of the most complex hydrogeological and contaminant migration sites in the state.
  • Advising on preparation of joint EIR/EIS for Wildlife Damage Management Program administered by California Department of Food and Agriculture and U.S. Department of Agriculture to address animals that harm livestock and crops.
  • Securing incidental take permits and related mitigation for four solar projects totaling more than 3000 MW that, when built, will provide more than 3% of California’s electricity.

Pillsbury Winthrop Shaw Pittman LLP

Pillsbury Winthrop Shaw Pittman LLP advises clients from virtually every segment of the industrial and energy sectors on the entire spectrum of environmental regulatory matters. The department is regularly called to assist with enforcement actions, compliance and legislative matters, project siting, development and site remediation. Lately, the team, which enjoys a strong reputation in the climate change field, has been involved in several mandates involving the State Department of Toxic Substances Control (DTSC) and has expanded its representation of specialty chemical companies in connection with enforcement proceedings, governmental investigations and corporate governance issues. Clients also benefit from the firm's wide geographical footprint across the US. The practice is jointly led by Jeffrey Knight in Washington DC, Amanda Halter in Houston, Mark Elliott in Los Angeles and Margaret Rosegay  in San Francisco. Elliott has a multifaceted environmental practice spanning hazardous materials, soil, water, and air quality regulations, while Rosegay is particularly sought after by oil and gas exploration and production operators. Sitting in Washington DC, Sheila McCafferty Harvey  is a name to note for climate change and sustainability matters. The department grew in March 2021 with the addition of partner Anne Austin, who joined the DC and Houston offices as a nationally recognized environmental lawyer who has held several high-profile federal and state regulatory roles. She was previously at the United States Environmental Protection Agency (EPA).

Practice head(s):

Mark Elliott; Margaret Rosegay; Amanda Halter; Jeffrey Knight

Other key lawyers:

Sheila Harvey; Christopher McNevin; Matthew Morrison; Michael McDonough; Reza Zarghamee; Anne Austin


‘Matt has a very client focused orientation and is sensitive to litigation costs.’

Key clients

MP Materials

Saint-Gobain Inc

Kinder Morgan

Pacific Gas & Electric

Green Diamond & Humboldt Redwood

Kinetrex Energy


Chevron Corporation

Teck Metals Ltd

Costco Wholesale Corporation

Valero Energy Corporation

Western States Petroleum Association

Schnitzer Steel Industries, Inc.

PBF Energy


American Chemistry Council

Brookfield Renewable Energy


Chesapeake Energy

Range Resources

Waste Management, Inc.

Renewable Fuels Association

K&L Gates

K&L Gates is sought after by mid-size and Fortune 500 companies in matters involving the regulation of air, water, wetlands, waste management, mining and oil gas before state and federal agencies. The team has an established reputation in the market for its expertise in the fields of brownfield redevelopment, environmental justice and natural resources damages. Clients praise Brian Montag for ‘his breadth and depth of not only knowledge but of contacts in New Jersey‘. He often represents clients from the manufacturing, construction, telecoms and chemicals sectors before environmental agencies regionally and nationally. He co-chairs the practice with Craig Wilson in Harrisburg, who serves as global practice coordinator of the environmental, land and natural resources group. Clients turn to Wilson for assistance with environmental permits for energy and industrial projects. Fellow co-leader Ankur Tohan is based in the Seattle office and specialises in compliance counseling and natural resource development.

Practice head(s):

Brian Montag; Craig Wilson; Ankur Tohan

Other key lawyers:

Timothy Weston; Stanford Baird; Tad Macfarlan


‘Brian Montag continues to impress me and our entire industry with his breadth and depth of not only knowledge but of contacts in New Jersey. So many different times we have asked ourselves “how do we deal with this situation?” and the answer invariably is “Get Brian involved.”’

Key clients

New Jersey Asphalt Pavement Association (NJAPA) and New Jersey Concrete and Aggregate Association (NJCAA)

Ventura Port District

Weyerhaeuser – Water Rights


CPV Power Holdings and affiliates

Specialty Granules LLC.

New York Racing Association

Novozymes North America, Inc.

Manatt, Phelps & Phillips, LLP

Though based in New York and California, Manatt, Phelps & Phillips, LLP  offers nationwide coverage, and is regularly retained to guide private, non-profit and public sector entities through complex environmental compliance concerns across the US and internationally. The practice frequently counsels on state and federal proposed environmental regulations affecting the handling of pharmaceuticals, biomedical waste and recycled materials, and demonstrates comprehensive knowledge of forever chemicals and emerging contaminants. The team is also a solid performer in brownfield cleanup and redevelopment matters, coordinating all facets of site remediation and return of properties to productive use. Leading the department is Craig Moyer in Los Angeles, who provides advice in the fields of crisis management, permitting challenges, and enforcement actions defense. Also in LA, Peter Duchesneau acts for clients in regulatory compliance and administrative proceedings, covering the full spectrum of federal and state environmental statutes. Individuals to note in New York include Ted Wolff, whose areas of expertise include enforcement and administrative actions across the nation, and Matthew Dombroski, who advises on environmental matters arising under the Clean Water Act,  CERCLA and RCRA.

Practice head(s):

Craig Moyer

Other key lawyers:

Ted Wolff; Peter Duchesneau; Matthew Dombroski; Matthew Williamson


‘The Manatt team have their finger on the pulse of the California environmental regulatory as well as anyone. Their insight is invaluable. I appreciate their reasoned and creative approach to solving complex regulatory issues in California.’

‘It’s a privilege to work with Matt Williamson. He knows both my company’s operations and the relevant regulatory implications inside and out. He’s a valuable member of our team.’

‘Mannatt assisted my company in a complex environmental regulatory issue. They successfully resolved the issue and provided excellent advice and counsel.’

‘Both Ted Wolff and Matt Williamson had experience in retail hazardous waste environmental matters and leveraged their experience to provide exceptional advice. They communicated effectively to both the client as well as opposing counsel. I would recommend them to other retail companies who need environmental assistance, particularly in California.’

Key clients

CalNRG (formerly Eagle Petroleum)

g2 Revolution, LLC

GATX Corp.

J.P. Wank Industrial Real Estate

Work highlights

  • Represented GATX Corp. for many years in connection with a wide variety of environmental matters ranging from complex remediation issues to enforcement matters.
  • The firm’s work for g2 Revolution, LLC regularly involves interfacing on the company’s behalf with local and state regulators, company vendors and customers, all in connection with negotiating agreements and assuring environmental compliance.

McGuireWoods LLP

With particular strength in Clean Air Act-related matters, McGuireWoods LLP is noted for its strong state, regional and national experience. It is a go-to firm for clients facing challenges stemming from emerging issues as EPA’s proposals to reduce greenhouse gas emissions from power plants and extend its jurisdiction under the proposed “waters of the U.S.” rulemaking, and state efforts to regulate residuals management. The regulatory and compliance group not only acts for clients in Clean Air Act regulatory and litigation mandates, it is also equipped to provide support in relation to the redevelopment of contaminated properties, civil and criminal enforcement proceedings. The practice is under the joint leadership of David Franchina in Charlotte, and Richmond-based Vishwa Link and Diane Flannery . The team has been expanding its presence in Washington DC, where Aaron Flynn and Makram Jaber are often sought after by utilities and oil and gas companies in relation to Clean Air Act regulatory issues.

Practice head(s):

David Franchina; Vishwa B. Link; Diane Flannery

Other key lawyers:

Aaron Flynn; Makram Jaber; Heather Stevenson; Allison Wood


‘The detail and collaboration is second to none. The amount of detail, thought and final product leaves no question unanswered. Great team and vast out reach of resources.’

Reed Smith LLP

The Environment, Health, and Safety team at Reed Smith LLP is ‘deeply knowledgable about the subject matter and provides practical advice‘ to an impressive client base operating in a variety of environmentally sensitive industries. Environmental regulatory and compliance are strong points for the department. Environmental law specialist Jennifer Smokelin is seasoned in civil enforcement and regulatory counseling; she is based in Pittsburgh. Ben Patton in Houston is praised for his ‘responsiveness and depth of experience in EHS issues‘. Megan Haines, who splits her time between Pittsburgh and Houston, is highly regarded by clients; she focuses on ESG, carbon and climate-related matters. Todd Maiden is a key contact in San Francisco.

Practice head(s):

Jennifer Smokelin; Benjamin Patton; Todd Maiden; Megan Haines

Other key lawyers:

Mary Balaster


‘The Environment, Health, and Safety team within Reed Smith is excellent. They are deeply knowledgable about the subject matter and provide practical advice for our business stakeholders. Their counsel has been invaluable during the pandemic, when we have leaned on them heavily for COVID advice.’

‘I would specifically recommend Ben Patton and Mary Balaster in Reed Smith’s Houston office. Both individuals extremely knowledgable, practical, and responsive to requests. I value their candor, humor, and business-focused advice. They differentiate themselves from the competition both with their responsiveness and depth of their experience in EHS issues. Additionally, they go to great lengths to provide counsel tailored to our industry, which is much appreciated.’

‘The Reed Smith team gets back to addressing your needs quickly and efficiently. They stay in constant contact when handling an issue.’

‘Megan Haines is fantastic with communication, explaining situations and scheduling needed meetings and such. She is always great at managing outside consultants and keeping the operator informed of each step in a process. She knows who to bring in to the situation to help make everything flow efficiently.’

‘I have worked with many legal professionals  from many firms. Megan is a standout individual among them all. Her professionalism, work ethic, contacts within regulatory agencies, and legal knowledge rise above any individual I have ever worked with. Her tenacious ability to negotiate with agencies has reduced penalties and fines,and in some cases has led them to be completely eliminated. Reed Smith is lucky to have Megan and I would recommend Reed Smith to anyone – because of Megan.’

Squire Patton Boggs

Standing out for its in-depth knowledge of environmental, safety and health issues, Squire Patton Boggs is seen with great regularity advising clients from the chemicals, energy, transportation, mining, steelmaking, pulp and paper sectors in relation to environmental compliance, federal and state permitting matters and enforcement actions. Mandates involving site remediation, brownfield redevelopment, federal and state land use approvals, water rights and water resource management are core areas of activity for the department, which is led by Karen Winters in Columbus. Winters assists with the defense of federal and state enforcement proceedings. Douglas McWilliams, who is based in Cleveland, advises on the entire spectrum of environmental matters, including rule development and air permitting. A name to note in Denver, Carolyn McIntosh is regularly retained by energy clients on compliance and litigation issues.

Practice head(s):

Karen Winters

Other key lawyers:

Carolyn McIntosh; Douglas McWilliams

Key clients

First Solar, Inc.

Controlled Thermal Resources

Huntsman Corporation

Coeur Rochester, Inc.

Triad National Security, LLC

City and County of Denver

Troutman Pepper

The environment and natural resources team at Troutman Pepper has a broad service offering in the field of environmental law, covering both non-contentious matters and litigation. Clients ranging from major companies, trade associations, public entities, and non-profit environmental organizations turn to the team for assistance with environmental enforcement actions, permitting issues and compliance programs. Energy and pipeline-related mandates, climate change and energy transition issues are among the department’s core areas of activity. The department is led out of Atlanta by Fitzgerald Veira, who is particularly concentrated on water and wastewater issues. Based in Richmond, Andrea Wortzel is regularly retained in waste management compliance and has also been involved in permitting and compliance for landfills. Mack McGuffey is a name to note in Atlanta for air quality and climate change issues arising out of regulations governing the construction and operation of stationary sources of air emissions.

Practice head(s):

Fitzgerald Veira

Other key lawyers:

Andrea Wortzel; Mack McGuffey; Houston Shaner; Shawn O’Brien

Key clients

LimnoTech/City of Richmond, Virginia

Mount Vernon Mills, Inc.

Kiewit Corporation

SUEZ Environment North America

Georgia Power Company / Southern Power Company

Resource Environmental Solutions


Delta Air Lines

Dominion Energy

Sunoco Pipeline L.P.

Energy Transfer LP

Metallurgical Coal Producers Association

Corporate Environmental Enforcement Council

Colorado Attorney General and the Colorado Department of Law

Baxter International, Inc

Work highlights

  • Serving as primary outside counsel to Corporate Environmental Enforcement Council, the only cross-industry business coalition that brings together the diverse perspectives of legal, technical, and governmental affairs professionals on environmental health and safety issues in the context of enforcement policy and practice.

Venable LLP

Venable LLP is well positioned to handle all types of environmental and natural resources issues.  Retained by public and private sector clients in manufacturing, pharmaceuticals, mining and utilities for assistance in permitting, compliance, federal and state policy, the department balances a broad and busy workload in the area of environmental regulatory counseling. The team possesses the ability to represent clients in all aspects of federal and state environmental law, including on legislative initiative before Congress and regulatory agencies. On the compliance front, attorneys have a deep understanding of environmental issues surrounding energy development, endangered species, air emissions, water, solid and hazardous waste disposal and chemical substances. Based in Washington DC, Douglas Green is seasoned in administrative litigation and enforcement defense. William Sloan, who represents a broad pool of US and international clients in both environmental regulatory and litigation matters, is a noteworthy practitioner in San Francisco.

Practice head(s):

Douglas Green

Other key lawyers:

William Sloan; Kathryn Floyd

Key clients

Utility Solid Waste Activities Group (USWAG)

Maryland Department of Transportation

Athletics Holdings LLC

American Forest Resource Council

State Water Contractors, Inc.

Navajo Nation

Skipjack Offshore Energy, LLC

Resilient Floor Covering Institute (RFCI)

Tri-Union Seafoods (dba Chicken of the Sea)

KB Homes

Work highlights

  • Representing Utility Solid Waste Activities Group (USWAG) in a wide range of issues impacting utility operations and site clean-up, including site assessment and remediation of former manufactured gas plant (MGP) sites and other legacy utility assets.
  • Serving as lead environmental counsel for Maryland Department of Transportation in multi-modal project development across the state.
  • Representing Athletics Holdings LLC, the owner of the Oakland Athletics baseball team, as it confronts the historic legacy of environmental regulatory neglect in West Oakland that sited polluting facilities adjacent to residential neighborhoods.