Environment: transactional in United States

Cravath, Swaine & Moore LLP

The environmental practice group at Cravath, Swaine & Moore LLP provides legal support to a range of corporate clients and financial institutions on the full scope of environmental issues arising in business transactions. In line with the firm's reputation, the team routinely advises on complex transactional work, including secured lending and acquisition financing, equity and debt offerings, IPOs, and M&A and divestitures. Other areas of activity for the New York-based team include assisting clients with post-closing obligations as well as mandatory and voluntary disclosures relating to climate change. Department head Matthew Morreale has expertise in a number of highly-regulated sectors, such as oil and gas, chemical refining, telecoms, heavy manufacturing and power generation, to name just a few. Morreale is also experienced in the environmental issues relating to periodic reporting obligations under securities laws. Annmarie Terraciano is another key figure in the team.

Practice head(s):

Matthew Morreale

Other key lawyers:

Annmarie Terraciano

Key clients




Johnson & Johnson

Lindsay Goldberg


Occidental Petroleum

Parker Hannifin

Peabody Energy


Work highlights

  • Advised Disney on the environment law aspects of its $85bn acquisition of Twenty-First Century Fox.
  • Advised Occidental on the environment law aspects of its $57bn acquisition of Anadarko.
  • Providing legal advice to Mylan on the environment law aspects of its pending $50bn combination with Upjohn—Pfizer’s off-patent branded and generic established medicines business—creating a new global pharmaceutical company.
  • Advising the Transaction Committee of the Board of Viacom on environmental law aspects in connection with Viacom’s pending $30bn merger with CBS Corporation.
  • Advised the initial purchasers (led by Morgan Stanley and Credit Suisse) on the environment law aspects of the $3.8bn 144A/Reg. S high-yield senior secured notes offering of TransDigm, a leading global designer, producer and supplier of highly engineered aircraft components.

Kirkland & Ellis LLP

Kirkland & Ellis LLP provides comprehensive environmental law advice throughout the entire life-cycle of a transaction. Supporting the firm's prolific corporate practice, the team has extensive experience of environmental due diligence, as well as the risk allocation and mitigation issues arising from high-value transactions. Other areas of activity include representing clients in the negotiation of environmental insurance policies, and in the enforcement of indemnity claims. The global environment practice is led by Paul Tanaka in San Francisco and Houston. Alexandra Farmer divides her time between the Houston and Washington DC offices, and is rated for her experience of transactions in the power, oil and gas and manufacturing sectors. The environment team is also experienced in high-profile bankruptcy and restructuring matters, an area where Jonathan Kidwell is a key contact. Kidwell, who divides his time between Dallas and DC, also has experienced in M&A, financing transactions and real estate deals. Also recommended is Jennie Morawetz. Based in the DC office, Morawetz advises private equity investors and public companies on issues such as ESG due diligence. Brian Land moved into an of counsel role in 2019.

Practice head(s):

Paul Tanaka

Key clients

Advent International

American Securities

Arsenal Capital Partners

Bristol Myers Squibb Company

Energy Future Holdings Corp

Fortive Corporation

Frontenac Company/AH Harris & Sons

Gryphon Partners

Kohlberg Kravis Roberts

Marriott Vacations Worldwide Corporation

PPC Partners

Savage Industries

Spectrum Brands Holdings

Sycamore Partners

The Blackstone Group

The Carlyle Group


Warburg Pincus

Work highlights

  • Advised GLP on the sale of its US logistics business to Blackstone for a purchase price of $18.7bn, marking the largest-ever private real estate transaction globally.
  • Advised GSK on its agreement with Pfizer to combine their consumer health businesses into a new joint venture, with combined sales of approximately $12.7bn.
  • Advised Rowan Companies on its $12bn combination with Ensco in an all-stock transaction; conducted a due diligence process, drafted and negotiated a complex set of reciprocal environmental representations and warranties and evaluated a number of potentially significant environmental contamination and compliance liabilities for the client.
  • Advised Bain Capital Private Equity and The Carlyle Group on a joint voluntary public takeover offer to the shareholders of Osram Licht, a global lighting technology group headquartered in Munich and listed on the Frankfurt and Munich stock exchanges.
  • Represented ArcLight Capital Partners in connection with the acquisition of Thorntons by a joint venture between ArcLight and BP Products North America.

Latham & Watkins LLP

Latham & Watkins LLP's environment, land and natural resources team is adept at assisting global financial institutions, private equity firms, and leading corporates in high-profile transactions with significant environmental law components. Jointly headed by James Arnone in Los Angeles and Janice Schneider in Washington DC, the national practice group combines wide-ranging expertise in corporate and financing transactions, with sector specializations in areas such as energy, chemicals and manufacturing, among others. Another contact in DC is James Barrett, who has experience of environmental matters relating to project finance and private equity transactions. In Houston, Joel Mack is a contact for environmental law support on capital markets, M&A and finance deals, while New York-based Jean-Philippe Brisson (global co-chair of the environmental regulations and transactions practice) is a go-to advisor for green finance transactions and climate change matters. The team also has strengths in carbon markets, cleantech monetization and renewable and low-carbon technologies, areas in which Joshua Bledsoe in Orange County is a name to note.

Practice head(s):

James Arnone; Janice Schneider

Key clients

The Carlyle Group


Platinum Equity

Bain Capital

Palladin Consumer Retail Partners

SK Capital Partners

Novolex Holdings

Multi-Color Corporation

Wheelabrator Technologies

Energy Transfer Partners

Equitrans Midstream Corporation

CNX Midstream Partners

Credit Suisse Securities (USA)

CNX Resources Corporation

Centennial Resource Production

Kayne Anderson Acquisition Corp.

Energy Transfer Equity

IPSCO Tubulars

QEP Resources

ArcLight Capital Partners

WhiteWater Midstream

One Rock Capital Partners

Blue Road Capital

Leonard Green & Partners


Jefferies Finance

Inlandsis Fund

Peak Carbon

Occidental Petroleum

Credit Suisse

SK Capital



Work highlights

  • Advised the conflicts committee of MPLX on the environmental aspects of its definitive merger agreement with Andeavor Logistics (ANDX), whereby MPLX will acquire ANDX in a unit-for-unit transaction at a blended exchange ratio of 1.0.
  • Advising The Carlyle Group and BC Partners on the environmental aspects of the sale of Precision Flow Systems, a provider of fluid management systems, to Ingersoll-Rand.
  • Advising leading private equity firm Leonard Green & Partners on the environmental aspects of the sale of Tank Holdings, a manufacturer of rotational molded poly and welded steel bulk storage and material handling products, to private equity firm Olympus Partners.
  • Advising investment firm Kayne Anderson Acquisition Corp. on the environmental aspects of the joint venture between the client and US oil producer Apache Corporation to create Altus Midstream Company, a pure-play, Permian Basin midstream oil and gas company.
  • Advising Platinum Equity on the environmental aspects of the acquisition of Multi-Color, a provider of label solutions, for $2.5bn; handled all aspects of environmental, health and safety, as well as ESG due diligence.

Weil, Gotshal & Manges LLP

Weil, Gotshal & Manges LLP has a strong reputation for advising on environmental issues arising from corporate and financing transactions in highly-regulated industry sectors, such as hazardous waste management,  manufacturing, chemicals, natural resources, energy and real estate. In addition to core strengths in M&A, financing transactions, corporate restructuring and infrastructure development, the team is also rated for its work at the intersection of environmental and bankruptcy law. The practice is headed by environmental liability risks expert Annemargaret Connolly, who leads many of the most environmentally sensitive matters handled by the firm. Connolly recently acted for PC&G in what has been called the market's first bankruptcy to be caused by climate change liabilities. Matthew Morton is another contact for bankruptcy-related matters and other restructuring projects. Also recommended are Thomas Goslin, who specializes in matters in the energy sector, and John O’Loughlin, who has wide-ranging experience of environmental and other health and safety issues arising from corporate transactions. The DC-based team is also sought out for assistance with environmental, social and corporate governance (ESG) reviews.

Practice head(s):

Annemargaret Connolly

Key clients

Advent International

American Securities


Berkshire Partners

Brookfield Asset Management and Brookfield Property Partners

Campbell Soup Company

Cornell Capital

Crow Holdings

Eli Lilly and Company / Elanco

General Electric

Genstar Capital

Giant Eagle


Goldman Sachs

The Kroger Company

Nexeo Solutions



Sears Holdings



Westinghouse Electric Company

Willis Towers Watson

Work highlights

  • Advised Eli Lilly and Company on its $7.9bn exchange of its approximately 82% remaining interest in Elanco Animal Health Incorporated, a developer and marketer of products and services to improve animal health and protein production.
  • Advised American Securities on its acquisition of CPM Holdings, a designer, producer and marketer of process system equipment, manufacturing automation systems and aftermarket parts for industries including animal feed and oilseed, with 31 manufacturing and distribution facilities located across the globe.
  • Representing PG&E, a publicly-traded, investor-owned utility in Northern California, in its Chapter 11 proceedings, a case that has been described as the first-ever bankruptcy resulting from climate change due to the client’s struggle with potentially $30bn in liabilities resulting from wildfires allegedly caused by PG&E assets operating in drought-stricken areas of California.
  • Acting for Bank of America Merrill Lynch and Citi as financial advisors to Occidental Petroleum Corporation in its pending $57bn acquisition of Anadarko Petroleum Corporation.
  • Represented Genstar Capital in its sale of Boyd Corporation to affiliates of Goldman Sachs; Boyd Corporation is a designer of highly-engineered, material-based thermal management and environment sealing solutions that ensure the energy efficiency, durability, safety, and performance of numerous technology applications.

Allen & Overy LLP

Well known for the strength of its global network, Allen & Overy LLP has the ability to provide seamless multi-jurisdictional advice on cross-border transactions and their environmental implications. Headed by Ken Rivlin, the firm's global environmental group has experience advising on the full range of environmental issues, including climate change and emissions trading, energy, contaminated land issues, and REACH and chemicals regulation. In addition to transactional due diligence and risk allocation work, the team also advises on product responsibility requirements and deal-related indemnity disputes. Felise Cooper also advises on due diligence and compliance requirements, including global substance disclosure, and control and product take-back requirements; and Maria Christopher-Bell has been active in project finance, M&A and real estate deals. Named attorneys are based in New York.

Practice head(s):

Ken Rivlin

Key clients

Carlyle Infrastructure Partners


Natural Resources Defense Council

Munich Airports International

Euro Garages




Conrac Solutions Capital

Macquarie Investment Management

3i Group

Work highlights

  • Acting as environmental counsel to the consortium of financial sponsors (led by the Carlyle Global Infrastructure Investment Opportunities Fund, along with JLC Infrastructure and Ullico) and airline sponsors in connection with the design, construction, finance, operation and maintenance of Terminal One at John F. Kennedy International Airport.
  • Advising Munich Airports International on the operations and concessions management of Newark International Airport’s new Terminal 1, which is one of the largest redevelopment projects in New Jersey’s history.
  • Advising Conrac Solutions Capital on the development and financing of a joint use facility at Newark International Airport, consisting of a public parking facility for the airport’s new Terminal 1 and consolidated rental car facilities.
  • Advising Euro Garages on the acquisition of Cumberland Farms, which operates approximately 600 convenience retail stores and fuel stations across the US.
  • Advised Hitachi on environmental matters in connection with its $1.43bn acquisition of JR Automation Technologies.

Davis Polk & Wardwell LLP

Davis Polk & Wardwell LLP advises clients operating in environmentally sensitive industries, such as oil and gas, mining, energy, chemicals and manufacturing, on a range of transactional work, covering M&A, capital markets, real estate and project finance and insolvency matters. Environmental due diligence and management of risk, as well as public environmental disclosure feature in the New York-based team's workload. The group is under the joint leadership of Loyti Cheng, who showcases a strong track record in environmental and toxic tort analysis and contractual allocations in the context of transactions, and Betty Huber, who has broad-base expertise in corporate and financing transactions, environmental insurance and indemnification matters, environmental liabilities in bankruptcy as well as sustainability issues facing public and private entities.

Practice head(s):

Loyti Cheng; Betty Huber

Key clients


AES Corporation



Emerson Electric

The Ferrero Group


Masco Corporation

Morgan Stanley

Reynolds Group Holdings

Work highlights

  • Advised Brookfield Business Partners on its $13.2bn acquisition of the Power Solutions business of Johnson Controls International; the leveraged buyout involved significant contaminated sites, and complex environmental compliance matters concerning multiple jurisdictions.
  • Assisted Kosmos Energy, a deepwater oil and gas company, with its $1.23bn acquisition of Deep Gulf Energy from First Reserve and other shareholders, which involved offshore oil and gas environmental and safety liabilities requiring a thorough understanding of international, federal and state laws governing Gulf of Mexico activities.
  • Represented Freeport-McMoran, a leading international mining company with headquarters in Phoenix, in its SEC-registered offering of $1.2bn of senior notes, which involved conducting due diligence relating to the company’s worldwide mining and copper operations as well as an analysis of US securities disclosure requirements.
  • Advised the initial purchaser on a Rule 144A/Regulation S offering by Cleveland-Cliffs of $750m of its 5.875% senior guaranteed notes.

O'Melveny & Myers LLP

O'Melveny & Myers LLP fields a multidisciplinary team that routinely handles complex environmental issues arising from domestic and cross-border corporate transactions. The practice is particularly active in advising on large-scale development projects and remediation efforts, but also supports the transactional teams with pre-development assessments, due diligence examinations, permitting applications, and agency reviews. New York-based Eric Rothenberg leads the environmental and natural resources group, and has broad expertise in financings and reorganizations involving industrial and commercial properties. Kelly McTigue in the Los Angeles office leads domestic and international environmental reviews for several of the firm's major M&A and financing transactions, and John Rousakis in New York advises private equity firms, financial institutions and commercial entities on environmental issues related to their investment activity.

Practice head(s):

Eric Rothenberg

Other key lawyers:

Kelly McTigue; John Rousakis

Key clients

American Airlines

Apollo Global Management

California Resources Corporation

California High Speed Rail Authority

Coachella Valley Water District

Exxon Mobil Corporation

Ontario Teachers’ Pension Plan

Puerto Rico Fiscal Agency & Financial Advisory Authority

Renewable Resources Group

Vantage Airport Group

Work highlights

  • Representing the California High Speed Rail Authority (CHSRA), the state agency overseeing the development of high-speed intercity rail service in California, in the negotiation of various master agreements and rail improvement matters in Southern California in order to facilitate the development and operation of California’s high-speed rail service.
  • Acting for Terminal One Group Association (a joint venture of Lufthansa Airlines, Air France, Japan Airlines, and Korean Air) in connection with its efforts to develop a new 2.9 million square foot south-side terminal complex to replace Terminals 1 and 2 at New York’s John F. Kennedy International Airport; advised on environmental diligence reviews, NEPA compliance, as well as environmental deal negotiation and documentation.
  • Represented Finisar Corporation, a leading designer of optical communications equipment and subsystems for data center operators, telecoms providers and automotive companies, in its agreement to be acquired by II-VI in a cash and stock transaction valued at approximately $3.2 bn.
  • Assisted Apollo Global Management with its $2.5bn acquisition of Direct ChassisLink, a North Carolina-based marine chassis rental and leasing company, from EQT Infrastructure.
  • Acted for Ontario Teachers’ Pension Plan Board on its acquisition of Broetje Orchards, one of the largest, vertically integrated apple companies in the United States which operates more than 8,000 acres of apple orchards; provided environmental regulatory advice on the transaction.

Simpson Thacher & Bartlett LLP

Working closely with the firm's corporate and transactional groups, Simpson Thacher & Bartlett LLP acts for corporates, investors and bank lenders, providing comprehensive environmental law advice on a litany of corporate and financing transactions, and bankruptcy matters. Particularly active in heavily regulated industries, the practice group advises across the spectrum of environmental law; from the identification, allocation, management and disclosure of environmental risk, to regulatory and enforcement proceedings. Washington DC-based senior counsel Adeeb Fadil stands out for his expertise in the environmental aspects of transactions such as divestitures, securities offerings and restructurings; especially those involving complex cross-border elements. Fadil jointly leads the practice group alongside Mike Isby in the New York office, who has extensive experience of the environmental issues arising from M&A, capital markets transactions and financing matters; he also provides standalone advice on environmental regulatory compliance.

Practice head(s):

Adeeb Fadil; Mike Isby

Key clients

The Blackstone Group

Centerbridge Partners

Crestwood Midstream Partners

First Reserve

Genesee & Wyoming

Gerdau Ameristeel

Goldman, Sachs & Co.

Hellman & Friedman

Hovnanian Enterprises

Ingersoll Rand

Johnson Controls

JPMorgan Chase

Kohlberg Kravis Roberts & Co.

Microsoft Corporation


PPL Corporation

Silver Lake Partners

Tesoro Corporation

US News and World Report

Work highlights

  • Represented L3 Technologies (a provider of global ISR, communications and electronic systems for military, homeland security and commercial aviation customers) in its $33bn business merger with Harris Corporation through an all-stock merger of equals transaction.
  • Acted for Genesee & Wyoming, a short line railroad holding company, in its proposed sale to affiliates of Brookfield Infrastructure  and GIC in a transaction valued at approximately $8.4bn.
  • Acted for Garda World Security Corporation, the world’s largest privately-owned security services company, in its $5.2bn recapitalization transactions, which represents the largest private buyout in Canadian history.
  • Advised Avantor, a portfolio company of New Mountain Capital, on its initial public offering of common stock and its concurrent public offering of 6.25% Series A mandatory convertible preferred stock, which marked the largest healthcare IPO in US history.
  • Represented Johnson Controls in relation to the $13.2bn sale of its Power Solutions business  to Brookfield Business Partners and its institutional partners, including Caisse de dépôt et placement du Québec.

Skadden, Arps, Slate, Meagher & Flom LLP

Skadden, Arps, Slate, Meagher & Flom LLP's environmental group assists clients with the development of strategies to address environmental challenges arising from complex M&A and financing transactions, large-scale joint ventures, and project developments, as well as corporate restructurings and  bankruptcies. Headed by Elizabeth Malone in Washington DC, the team is particularly experienced in heavily scrutinized industries, such as energy, manufacturing, chemicals, pharmaceuticals and infrastructure, to name just a few. The department is also well equipped to represent clients in the negotiation of insurance policies.

Practice head(s):

Elizabeth Malone

Other key lawyers:

Henry Eisenberg

Work highlights

  • Representing Exide Technologies in connection with matters arising from its voluntary Chapter 11 case filed in the US Bankruptcy Court for the District of Delaware.
  • Representing Blommer Chocolate Company in its acquisition by Fuji Oil Holdings.
  • Acting for Caesars Entertainment Corporation in its $17.3 bn acquisition by Eldorado Resorts.
  • Advising CPI International, a portfolio company of Odyssey Investment Partners, on its acquisition of the antenna systems business of General Dynamics.
  • Advising Hanwha Group on its $300m acquisition of EDAC Technologies Corporation from Greenbriar Equity Group.

White & Case LLP

White & Case LLP is rated for its ability to advise major multinational and domestic corporates on environmentally sensitive M&A, leveraging the strength of its international network to handle cross-border deals across the globe. In addition to M&A, the practice group routinely advises on the environmental law aspects of project finance and development, bankruptcy proceedings, real estate transactions, securities offerings and governmental clean-up programs. The team is also sought out by governmental bodies and non-profit organizations. Key figures include department head Seth Kerschner and Laura Mulry, both of whom have extensive experience advising on due diligence, environmental compliance, and climate change-related issues in the context of corporate, commercial and financing transactions. The team is particularly active in regulated industries such as heavy chemicals, pharmaceuticals, energy, transportation and storage.

Practice head(s):

Seth Kerschner

Other key lawyers:

Laura Mulry


‘Depth of experience and good judgement.’

‘Seth Kershner is intelligent, reasonable and effective.’

‘Laura Mulry  is adept at handling complex corporate transactions, especially as it affects our climate change issues. Simply, it wouldn’t have been possible to protect our group without Laura’s keen attention to detail, understanding of the deal points and clearly stated arguments. Candidly, our team is in awe of her. I believe our counter-party represents her acuity and persistence as well.’

Key clients


Saudi Aramco

Quad-C Management

DIC Corporation

Brookfield Asset Management

Antin Infrastructure Partners

Newmont Mining Corporation

The Carlyle Group





EIG Global Energy Partners




Work highlights

  • Acting as environmental counsel to Pfizer in connection with its creation of a consumer healthcare joint venture with GSK; the team coordinated environmental diligence for a portfolio of manufacturing sites which involve a long history of hazardous materials use and environmental permitting challenges.
  • Advising Saudi Aramco on all environmental law matters in connection with its debut notes offering worth $12bn.
  • Served as lead environmental counsel to Saudi Aramco in the $69.1bn acquisition of Saudi Basic Industries Corporation, which involved a portfolio of highly regulated chemical assets.
  • Represented Quad-C Management in the acquisition of a majority interest in Boulder Scientific Company, a company that develops and manufactures specialty chemicals.
  • Representing DIC Corporation in its acquisition of the global pigments business of BASF.

Bracewell LLP

With specialists in Washington DC and Texas, Bracewell LLP's environmental strategies group has a strong profile in the energy sector, where it provides comprehensive advice on environmental challenges in relation to domestic and cross-border corporate deals, real estate and infrastructure development projects, and financing transactions. Aside from its energy sector work, the team is also active in a number of other highly-regulated industry sectors, such as chemicals, technology and heavy manufacturing. Climate change and Clean Air Act expert Jeffrey Holmstead oversees the team, alongside Jason Hutt; both are based in Washington DC. Timothy Wilkins is a key figure in the Austin office.

Practice head(s):

Jason Hutt; Jeffrey Holmstead

Other key lawyers:

Timothy Wilkins


‘Given the nature of our industry, our targets all possess, to a greater or lesser extent, environmental concerns that must be addressed.  This team has the deep industry knowledge and transactional expertise to ably guide us in our negotiations with sellers or other counterparties so as to provide us with a clear understanding of the risks inherent in each of our deals, and to craft the deal documents to address those risks.’

‘Tim Wilkins is a superb environmental lawyer who possesses a deep knowledge of the refining industry as well as the environmental laws that govern it.  I trust no one else to work on our deals.’

Key clients

Sol Systems

Upper Bay Infrastructure Partners

Halcón Resources Corporation

Pioneer Natural Resources Company

COG Operating

Global Infrastructure Partners Capital Solutions Fund

Western Gas Partners

Prosperity Bancshares

Work highlights

  • Represented Sol Systems in the spin-off of its C&I solar development business to a joint venture with Capital Dynamics.
  • Assisted Upper Bay Infrastructure Partners, as lead investor, with the acquisition of Tidewater Transportation & Terminals from Stonepeak Infrastructure Partners.
  • Acted for Halcón Resources Corporation in the divestiture of all of its water infrastructure assets across the Delaware Basin to a subsidiary of WaterBridge Resources for up to $325m.
  • Advised Pioneer Natural Resources Company on a strategic long-term service provider agreement with ProPetro Holding Corp.
  • Represented COG Operating, a subsidiary of Concho Resources, in the sale of produced water assets in the southern Delaware Basin to WaterBridge Resources.

Cahill Gordon & Reindel LLP

Cahill Gordon & Reindel LLP is go-to environmental law counsel for bank lenders and securities companies. The team has deep experience in negotiating the environmental provisions and identifying environmental and sustainability risks in relation to bank lending, M&A, public debt offerings and IPO transactions. The group also has experience in highly regulated sectors, such as heavy manufacturing, mining and petroleum, and has been at the forefront in the field of ESG risks in business operations and supply chains. Based in New York, the team is headed by Gregory Battista, a key contact for a huge variety of environmental law matters, namely those pertaining to corporate transactions, risk analyses, remediation, compliance and climate change issues. Peter Gioello focuses on environmental transactional work, and stands out for his in-depth knowledge of sustainability reporting.

Practice head(s):

Gregory Battista

Other key lawyers:

Peter Gioello; Lynn Schmidt

Key clients

Bank of America Merrill Lynch


Credit Suisse

Deutsche Bank

Morgan Stanley

Wells Fargo



Work highlights

  • Represented Envigo in a transaction involving the acquisition of Envigo’s nonclinical contract research services business by Covance’s drug development segment; a transaction that occurred simultaneously with the acquisition of Covance research products’ business by Envigo’s research models and services business.
  • Acted for the lead arrangers (BofA Securities)  in connection with the acquisition financing for LABL’s purchase of Multi-Color Corporation; the combined entity is one of the largest label companies in the world.
  • Represented the initial purchaser in connection with a $300m bond offering by Eldorado Gold Corporation.
  • Acted for Jefferies in relation to a $1.37bn debt offering and $500m credit facility for Citgo Holdings; evaluated Citgo’s remediation, environmental compliance and health and safety liabilities associated with MTBE contamination.
  • Represented JP Morgan Securities as the initial purchasers in connection with a $600m debt offering for Hilcorp Energy.

Debevoise & Plimpton LLP

In line with the firm's wider strengths in corporate and securities transactions, Debevoise & Plimpton LLP routinely handles the environmental aspects of large-scale transactions, acting for private equity firms and investment managers, as well as corporates in the media, chemicals and healthcare sectors. In addition to its work on M&A and complex financing transactions, the team also has experience in bankruptcy proceedings, and is also noted for its knowledge of environmental, social and governance issues. Key contacts in the team include practice head Stuart Hammer, who has wide-ranging expertise in corporate and real estate transactions, and Harry Zirlin, a name to note for issues relating to CERCLA liability and environmental insurance coverage. Both attorneys are based in the firm's New York office.

Practice head(s):

Stuart Hammer

Other key lawyers:

Harry Zirlin


‘The team has a good knowledge of the market and a commercial mindset.’

‘Debevoise has a solid reputation in transactional due diligence with an international reach that allows it to respond well on deals involving multinational companies.’  

‘Debevoise has a solid, well-deserved legal reputation on industrial transactions due to the business/environmental team.’

‘Stuart Hammer is very responsive, commercial and has broad knowledge of the market.’

‘Stuart Hammer and Harry Zirlin have a solid understanding of the technical issues associated with manufacturing operations and environmental issues in industrial settings, stay on top of trending/emerging issues (such as PFAS, climate change) and seek input from experts to further their understanding in order to provide advice.  They also understand the business side of transactions and can easily assimilate the technical environmental information and put it into the overall business picture to support their client’s analysis.’

Key clients


Atkore International

Brand Industrial Holdings

Cerberus Capital Management

Clayton, Dubilier & Rice

Cornerstone Building (f/k/a NCI Building Systems)

DE Shaw


Elliott Management Corporation

International Paper

JP Morgan Investment Management

Kelso & Company


Morgan Stanley Investment Management

Reynolds Group


The Carlyle Group

The Rank Group

Tribune Media

Toyota Motor Corporation

Work highlights

  • Advising Clayton, Dubilier & Rice on its $3.8bn acquisition of Anixter International, a NYSE-listed company.
  • Representing Reynolds Group Holdings Limited and Closure Systems International in connection with Cerberus Capital Management’s acquisition, through an affiliate, of CSI’s North American, Costa Rican and Japanese businesses and related facilities from Reynolds Group.
  • Acting for Clayton, Dubilier & Rice (CD&R) and Brand Industrial Services (BrandSafway) in relation to an announced agreement with Brookfield Business Partners for Brookfield to acquire half of CD&R’s ownership interest in BrandSafway.
  • Advised Tribune Media Company on its $6.4bn sale to Nexstar Media Group, a leading diversified media company.
  • Represented Time in the company’s sale to Meredith Corporation;  the transaction was valued at approximately $2.8bn.

Paul Hastings LLP

Paul Hastings LLP's environment and energy practice advises on the environmental considerations associated with complex M&A, major investment transactions and project finance deals, large-scale real estate transactions, and brownfield developments. The practice is well-versed helping international clients navigate US environmental liability concerns in relation to their inbound investments. The practice group is led out of the San Francisco office by Peter Weiner, who specializes in solar power and other renewable energy matters. Another contact in San Francisco is Deborah Schmall, who advises on a huge variety of corporate transactions and brownfield development matter. In Washington DC, Tom Mounteer is a key contact for capital markets transactions, real estate acquisitions and private equity deals, having recently advised on several project financing transactions in Latin America.

Practice head(s):

Peter Weiner

Key clients



Capital One

Credit Suisse

General Electric

JP Morgan


Morgan Stanley

RBC (Royal Bank of Canada)


Société Générale


Wells Fargo

Related Companies / (Related Santa Clara)

Union Pacific Railroad

AT&T Services

San Francisco Giants

Oakland Athletics

Occidental Petroleum

Work highlights

  • Represented HC2 Holdings, a diversified holding company, and its operating subsidiary DBM Global in the acquisition of GrayWolf Industrial, a premier specialty maintenance, repair and installation services provider.
  • Advised Canopy Growth in connection with its entering into a definitive arrangement agreement that grants Canopy Growth the right to acquire 100 % of the shares of Acreage Holdings (a leading multi-state operator in U.S. cannabis), with a requirement to do so at such time as cannabis production and sale becomes federally legal in the United States.
  • Represented Greenbrier in its acquisition of the rail car manufacturing business of American Railcar Industries; evaluated the extent to which the facility sites may have been impacted by releases of hazardous substances and the facilities’ compliance with environmental rules governing their operations.
  • Acting for new company Intersect Power (a spinoff from Recurrent Energy) in its 350MW Athos Solar Project; involved in all regulatory approvals, including land use, NEPA, tribal issues, and CEQA.
  • Represents First Solar in obtaining all permits to allow operation, with PPAs to PG&E and Apple, of the Cal Flats project in Monterey and San Luis Obispo Counties, CA (280MW).

Proskauer Rose LLP

Proskauer Rose LLP handles the full range of environmental law matter in relation to M&A, real estate and financings transactions, and also provides standalone advice on environmental compliance, sustainability and climate change issues. Based in New York, the practice group is headed by Gail Port, a key contact for environmental law advice on corporate, financing and development transactions in heavily regulated industries, such as pharmaceuticals, manufacturing, telecoms and chemicals. Senior counsel Aliza Cinamon is also recommended; she advises on environmental liability and risk allocation issues, as well as public filing disclosures and environmental insurance products.

Practice head(s):

Gail Port

Other key lawyers:

Aliza Cinamon

Key clients



Carolina Panthers

Charles B. Wang Community Health Center

Empire City

Henry Schein


Teva Pharmaceuticals USA

Trinity Church

Westinghouse Electric Company

Work highlights

  • Represented Arkema in multiple acquistions, divestitures and joint ventures, including in its recent acquisition of ArrMaz from Golden Gate Capital; the environmental group handled all of the diligence and negotiations of the environmental liability allocations and provisions of the transaction documents.
  • Acted for the Statutory Unsecured Claimholders’ Committee in the chapter 11 cases of Westinghouse Electric Company – a subsidiary of Toshiba Corporation – which filed for bankruptcy with almost $10bn of estimated debt.
  • Advised Empire City Casino and Yonkers Raceway on the $850m sale of the casino and raceway to MGM Resorts International; handled the environmental aspects of the transaction, including drafting and negotiation of the environmental provisions of the acquisition documents and environmental permitting matters.
  • Represented the Carolina Panthers in its $2.28bn sale to David Tepper.
  • Represented Grey Mountain Partners in its $115m acquisition of CHEP Recycled Pallet Solutions, the largest whitewood pallet recycler in North America, with 73 locations; included drafting and negotiation with respect to compliance and liability allocation under the New Jersey Industrial Site Recovery Act.

Sidley Austin LLP

Sidley Austin LLP advises its corporate clients on the environmental aspects of business transactions. Contacts include Byron Taylor in Chicago, Justin Savage (global environmental practice co-head) in Washington DC, and Judith Praitis, who is based in Los Angeles.

Sullivan & Cromwell LLP

Sullivan & Cromwell LLP advises clients on compliance strategies and environmental risks surrounding business transactions. Headed by Matthew Brennan in New York, the team has experience of M&A, project financing and development, and large-scale real estate deals.

Vinson & Elkins LLP

Leveraging a particularly strong presence in Houston, Vinson & Elkins LLP is well known for its knowledge of the environmental risks in the energy sector. Jointly headed by Larry Nettles in Houston and Ronald Tenpas in Washington DC, the department has a track record of success in securing key permits for development projects, namely approvals for multi-state projects involving NEPA and federal lands. Other key figures in Houston include recently-promoted partner Matthew Dobbins, who advises on issues such as environmental and climate change risk mitigation, and Jennifer Cornejo, a contact for environmental permitting issues.

Practice head(s):

Larry Nettles; Ronald Tenpas

Key clients

Blackstone Energy Partners

Bluewing Midstream


Enbridge/Valley Crossing Pipeline

Energy Transfer Partners/Trans-Pecos Pipeline

Greer Capital Corporation

NCS Multistage Holdings

Northwoods Energy

Oasis Petroleum

Pembina/Jordan Cove Energy Project

PennEast Pipeline Company

Popular Bank

RSP Permian

Securities Industry and Financial Markets Association (SIFMA)

SemGroup Corporation

Southwest Business Properties

Tyr Energy

Work highlights

  • Assisting Popular Bank (formerly known as Banco Popular) with resolving environmental contamination issues to facilitate the sale of a property in San Antonio, Texas.
  • Served as lead environmental counsel in relation to Blackstone’s new infrastructure fund’s inaugural investment in Tallgrass Energy Partners.
  • Advising the Carlyle Group and its affiliate Lone Star Ports in the development of the first onshore crude oil export terminal in the US, equipped to load crude carriers located in Corpus Christi, Texas.
  • Advised Riverstone on all aspects of potential environmental liabilities resulting from the acquisition of four coal-fired power plants located in Germany and the Netherlands.
  • Represented Targa Resources Corporation in a definitive agreement under which a fund group affiliated with The Blackstone Group acquired 45% interest in Targa Badlands, which holds all of Targa’s North Dakota assets, including 480 miles of crude oil gathering pipelines, 260 miles of natural gas gathering pipelines as well as the Little Missouri natural gas processing plant.

Dechert LLP

Dechert LLP is a destination firm for corporates, private equity investors, bank lenders, non-profits involved in domestic and cross-border M&A, infrastructure projects, real estate and financing matters. In addition to advising on environmental due diligence in the context of corporate transactions, the practice group provides standalone advice on environmental risks, and works with clients on the development of appropriate mitigation mechanisms. Key figures in the team include practice head Abbi Cohen and John Ix, both of whom have experience of a huge variety of regulatory compliance matters. Cohen and Ix are both based in Philadelphia.

Practice head(s):

Abbi Cohen

Other key lawyers:

John Ix


‘The Dechert team can deal with almost any situation, no matter how difficult. The firm’s approach is very practical and solution-oriented. They appreciate what it takes to get transactions done, including the sensitivities of different types of counterparties and position proposals.’

‘Both Abby Cohen and John Ix have proven themselves to us over a range of difficult transactions with financial, strategic and regulatory stakeholders.’

Key clients

Graham Partners

Court Square Capital Partners



One Equity Partners

US Ecology

Select Medical Corporation

PPC Enterprises

Work highlights

  • Advising the French company Eurovia, a subsidiary of Vinci, on the purchase of the plants and paving division of The Lane Construction Company, a subsidiary of Salini Impreglio Group.
  • Advised One Equity Partners (OEP) and Anvil International on all environmental aspects of the sale by OEP of 100% of the equity interests of the parent entities of Anvil to an affiliate of Smith-Cooper International
  • Provided environmental and toxic tort advice to US Ecology in an all-stock merger transaction valued at approximately $966m.
  • Assisted Berwind Corporation and its portfolio company BWA Group Holdings with the sale of BWA Water Additives, a provider of water management technologies, to Italmatch USA Corporation, a portfolio company of Bain Capital Private Equity (Europe).
  • Represented Court Square Capital Partners in its acquisition of Offen Petroleum Holdings, the parent company of Offen Petroleum, which is a wholesaler and distributor of over 1 billion gallons of motor fuel and related products in 14 Rocky Mountain West states.

Hunton Andrews Kurth LLP

Based in Washington DC, the team at Hunton Andrews Kurth LLP handles environmental compliance in relation to a variety of transactional matters, but has core strengths in environmental commodities and infrastructure investment deals, and the development and transfer of commercial properties or industrial facilities. Jointly led by Eric Murdock, Deidre Duncan and Makram Jaber, the team acts for all types of investors, financial institutions and corporates across a range of industry sectors. Duncan is a key contact for environmental permitting work in relation to oil and natural gas pipelines, and Jaber stands out for his expertise in Clean Air Act issues.

Key clients

Marathon Petroleum Corporation

Air Permitting Forum

Dominion Energy  Services



Consolidated Edison Company of New York

Pacific Gas & Electric Company

Vulcan Materials Company

King & Spalding LLP

King & Spalding LLP provides environmental law support to clients across a variety of industries. In particular, the team is well known in the automotive, energy and oil and gas sectors, where it advises on environmental issues relating to project developments and real estate transactions, as well as issues associated with the manufacture of regulated products and petrochemicals. Headed by Granta Nakayama, the team is predominately based in the firm's Washington office. Other key contacts include Cynthia Stroman and Joseph Eisert, both of whom have wide-ranging experience of environmental compliance, due diligence and incident response.

Practice head(s):

Granta Nakayama


‘The practice is highly professional and very capable, demonstrating a very approachable and pragmatic attitude and culture.’

‘Les Oakes is always available when clients have issues or need to discuss matters.’

Key clients


Mueller Water Products

Next Wave Energy Partners


Work highlights

  • Advised Fibrant on environmental liabilities associated with the transfer from Chapter 11 bankruptcy of a 600-acre chemical manufacturing plant that was operating under a hazardous waste permit and had two significant groundwater contamination plumes.
  • Represented Mueller Water Products in its $140m acquisition of Krausz Industries, a company that provides a full suite of innovative and proprietary pipe couplings, grips and clamps for the global water and wastewater industries.


The environment, energy and natural resources practice at Sullivan & Worcester LLP is proficient across a range of transactional work, but has particular experience advising on environmental issues arising in the real estate sector. Other areas of activity include permitting and government approvals, as well as environmental due diligence on project development, M&A, commercial agreements, financing and other corporate transactions. Jeffrey Karp leads the team from Washington DC; he advises on environmental compliance both in domestic and cross-border transactions. A name to note in Boston is Victor Baltera, who has wider-ranging experience of environmental, zoning and land use issues arising in real estate transactions.

Practice head(s):

Jeffrey Karp

Other key lawyers:

Victor Baltera; Leonard Miller


‘Strengths and key capabilities include being in front of environmental regulatory changes and proactively informing clients and consultants of how those changes may impact transactions and transaction agreements.’

‘The team is particularly skilled in communicating complicated technical information in narratives that are more easily understood by real estate and corporate environmental department contacts, including focusing consultants on aspects that are mots important for transaction contexts.’  

‘Jeffrey Karp is an excellent advisor.’

Key clients

Cronin Holdings

Industrial Logistics Properties Trust

Manulife US REIT

Applied Plastics

Work highlights

  • Advised Cronin Holdings on the proposed $260m development of a 22-story mixed-use tower on Boston Harbor.
  • Represented Industrial Logistics Properties Trust in financing approximately 186 properties in Hawaii; work involved overseeing the preparation of Phase 1 environmental reports, as well as evaluating identified recognized environmental conditions (RECs).
  • Represented Manulife US REIT, the first-ever Singapore-owned and listed REIT to invest in US properties, in the acquisition of properties for its portfolio.
  • Acted for Applied Plastics, a manufacturer of coatings for molds and wires including medical devices, in its acquisition by Los Angeles-based private equity firm Vance Street Capital.

Troutman Pepper

Troutman Pepper stands out in particular for its experience advising oil and natural gas pipeline companies. Indeed, the team is often called upon to act as lead environmental counsel in renewable power projects across the country, counseling on environment and climate change issues surrounding development, acquisitions, financing, among others. The nationwide environmental and natural resources practice is jointly led by Catherine Little and Fitzgerald Veira, both in Atlanta. Other key figures include Raleigh-based Sean Sullivan, who focuses on areas such as brownfield redevelopment, in addition to environmental compliance and transactional due diligence; and Andrew Perel in New York, who advises on environmental risk management and compliance matters.


‘The Environmental group is creative and adaptable.  Most issues that arise are not black and white and I have had positive outcomes as a result of this group’s ability to utilize resources within the firm to provide practical approaches to complex matters.’

‘Sean Sullivan and Lisa Zak make a great team.  Working with both of them has been a pleasure and a true team effort.’

Key clients

Consolidated Edison Development

I Squared Capital


Societe Generale Corporate and Investment Banking – SGCIB

Resource Environmental Solutions

Duke Energy Renewables

Work highlights

  • Served as legal counsel to I Squared in the sale of its hydroelectric generation platform Cube Hydro Partners and affiliate Helix Partners to  Ontario Power General (OPG), in a deal valued at $1.12bn; work involved the negotiation of environmental liabilities associated with legacy site operations.
  • Acts as national environmental due diligence counsel for UBS; recent work included conducting all environmental due diligence and mitigation on a portfolio of approximately 140 Sears auto repair and retail related facilities.
  • Represented Duke Energy Renewables, a subsidiary of Duke Energy, in the environmental and siting aspects of its acquisition of the 150MW North Rosamond solar project in Kern County, California.
  • Advised Con Edison Development, a subsidiary of Consolidated Edison and one of America’s largest owners and operators of renewable energy infrastructure projects, in its largest acquisition to-date.
  • Acts as environmental counsel to the senior lender (Societe Generale Corporate and Investment Banking) and to the securitization counsel in relation to a Stand Alone Single Borrower (SASB) deal in excess of $200m.