Environmental Knowledge, Analysis & Advocacy

Environmental Practice Areas

Compliance & Enforcement


Licensing & Permitting


Litigation & Dispute Resolution


Internal Audits & Investigations


Transactional Diligence & Counsel


At Bibler Law Firm, Greg Bibler provides strategic analysis, advice, and advocacy that is deeply grounded in knowledge of environmental law and science. Greg’s pragmatic approach focuses on the objectives of the client.

Attorney Profile

Gregory Bibler



A practitioner in environmental law for more than 30 years, Greg Bibler provides seasoned representation and counsel to his clients. His practice includes environmental litigation, enforcement, administrative permitting and rulemaking, corporate compliance, contaminated site management, and allocation of environmental risks in business transactions.

Greg often is called upon to advise clients on how best to respond to environmental compliance challenges identified through internal audits, whistleblower complaints, citizen suits, and government investigations. He also assists businesses in establishing and implementing environmental auditing and management systems, corporate sustainability programs, and financial disclosure frameworks.

Greg represents clients at Superfund and state sites across the country. His work at these sites includes negotiations with governmental authorities, strategic site evaluation and management, and litigation and mediation of cost allocation disputes. Greg is particularly experienced with large, multi-property sites, including those involving vapor intrusion and sediment contamination.

Before opening his boutique environmental practice, Greg was a partner at Goodwin Procter LLP in Boston for more than 20 years. As a result of his high-level work in the environmental field, he has been recognized annually by Chambers USA: America’s Leading Lawyers for Business and U.S. News-Best Lawyers, which selected him as Boston’s “Lawyer of the Year” for Environmental Law in 2016 and Environmental Litigation in 2019. He was elected as a fellow to the American College of Environmental Lawyers in 2013.


Practice Areas
  • Compliance and Enforcement
  • Licensing and Permitting
  • Litigation and Dispute Resolution
  • Internal Audits and Investigations
  • Transactional Diligence and Counsel
Recent Experience
  • Negotiation of administrative orders and permit amendments to resolve multi-state EPA enforcement proceeding under the new source review provisions of the Clean Air Act and applicable State Implementation Plans
  • Successful mediations of disputes with EPA, potentially responsible parties, and insurers concerning allocation and payment of oversight and response costs at major Superfund site
  • Strategic oversight of response actions, and prosecution and defense of related cost-recovery suits, at two of the largest vapor intrusion sites in Massachusetts
  • Investigation and self-disclosure of wastewater and air emissions issues identified in connection with acquisition of New York manufacturing facility
  • Successful claim for indemnification under corporate asset purchase agreement concerning EPA notice of responsibility at New England Superfund site
  • Negotiation of environmental terms in asset and stock purchase agreements, real estate acquisition agreements, and leases in multiple transactions and jurisdictions
  • Defense of multisite enforcement investigation regarding compliance with conditional declassification and beneficial use determinations for management of solid waste
  • Leadership role in administrative process for amending Massachusetts regulations and guidance to address vapor intrusion, source control, and non-aqueous phase liquids
Greg Bibler has been elected a fellow of:

  • The American College of Environmental Lawyers
  • The American Bar Foundation

Greg is consistently ranked in the top tier of environmental lawyers by:

  • Chambers USA: America’s Leading Lawyers for Business; and 
  • U.S. News-Best Lawyers, which selected him as Boston’s “Lawyer of the Year” for Environmental Law in 2016 and Environmental Litigation in 2019

In 2018, in recognition of his many years of litigation and other pro bono work, the Buzzards Bay Coalition presented Greg with its highest honor:

  • The Buzzards Bay Guardian Award

Logo for Lawyer of the Year 2019-best-lawyers-litigation-environmentallogo for Lawyer of the Year in Environmental Law 2016

logo for Chambers USA 2018 Leading Individual

Recently published works include

Speaking Engagements
Greg Bibler has chaired and spoken at multiple bar association and other programs on such topics as

  • Vapor intrusion: science, law, and strategy
  • New Massachusetts regulations and guidance for waste site cleanup
  • Trying environmental and land use claims
  • Lessons learned from recent environmental suits against lenders
  • Potential benefits and pitfalls of emerging new diligence technologies

Gregory Bibler is highly respected in the market for his extensive experience across a spectrum of environmental matters. He demonstrates particular expertise in air pollution, wastewater and contaminated site cleanups.

~ Chambers USA (2018)


Prior Experience
Goodwin Procter LLP, Partner and Associate (1986–2017)
Harvard Law School, J.D., 1985, magna cum laude

Harvard University, A.B., 1981, summa cum laude, Phi Beta Kappa “Junior Twelve”

Christ’s College, Cambridge University (John Knox Fellow: 1981–82)

Massachusetts Supreme Judicial Court, Honorable Herbert Wilkins, 1985–86

State Bars

District of Columbia
New York

Federal Courts

U.S. Court of Appeals for the First Circuit
U.S. Court of Appeals for the District of Columbia Circuit
U.S. District Court for the District of Massachusetts
U.S. District Court for the District of Columbia
U.S. District Court for the District of Maine

About Us

Bibler Law Firm advises clients on the full spectrum of environmental legal issues and specializes in developing creative strategies for managing environmental risks.

We represent clients in courts and before agencies in licensing and enforcement proceedings, cost recovery and contribution actions, and suits for equitable and monetary relief.

At Bibler Law Firm, Greg Bibler works with clients and their advisors to identify, evaluate, and appropriately allocate environmental risks in major corporate and real estate transactions.

Across the country, Bibler Law Firm helps create, negotiate, and implement cost-effective plans for cleanup and redevelopment of contaminated sites.