Bar & Court Admissions

  • Pennsylvania
  • New Jersey
  • U.S. District Court for the Eastern District of Pennsylvania

    U.S. District Court for the Middle District of Pennsylvania


The College of William & Mary's Marshall-Wythe School of Law, J.D., cum laude, 2012

  • Burton Award for Legal Achievement
  • 2012 Stephen E. Hermann Environmental Law Writing Contest (first place)
  • Senior Notes Editor, Environmental Law and Policy Review (2011-2012)

Hampden-Sydney College, B.A., summa cum laude, Phi Beta Kappa, May 2008, (Economics and Commerce, History)

MGKF Summer Associate Program

  • Chair, 2021 - present

American Bar Association

Friends of the Wissahickon

  • President of the Board

Chestnut Hill Conservancy, Conservation Easements Committee Member

Professional Highlights
News & Events

Garrett D. Trego, a partner with Manko, Gold, Katcher & Fox LLP, is an environmental litigator and regulatory attorney with experience in state, federal and administrative courts across the country. 

He has successfully resolved environmental litigation matters through jury trial, pre-trial motion, and various forms of negotiated settlement.  Garrett’s approach to environmental litigation is to simplify complex legal and environmental technical issues for lay audiences.  He uses his thorough understanding of litigation e-discovery, the firm’s in-house technical expertise, and an appreciation for clients’ bottom-line business objectives to return positive results for his clients.  Garrett has achieved successful outcomes for a variety of corporate, governmental, and institutional clients in complex environmental matters.  His environmental litigation experience includes matters involving tort and contract defense, cost recovery, stormwater issues, CERCLA/Superfund, RCRA, and state statutory environmental claims, as well as other environmental business disputes. 

On the regulatory side, Garrett’s practice focuses on site remediation matters and FIFRA.  He assists clients addressing historical site impacts by navigating state and federal environmental site remediation requirements, including under RCRA, CERCLA, CWA, CAA, and related state-law programs.  On FIFRA, Garrett counsels manufacturers, importers, distributors, and retailers of pesticide products and devices on compliance and enforcement issues related to registration, promotion, and data use and protection.  

Garrett earned his law degree cum laude from the College of William & Mary’s Marshall-Wythe School of Law.  He began his legal career as a commercial litigator in the Philadelphia office of an AmLaw 100 firm. 

Prior to law school, Garrett obtained his undergraduate degree from Hampden-Sydney College in central Virginia, and he completed one year of national service through AmeriCorps NCCC, working with the U.S. Forest Service in the Arapahoe-Roosevelt National Forest in northern Colorado and with Rebuilding Together in New Orleans.  Garrett lives in Fairmount in Philadelphia with his wife, children and a rescue dog.

Honors & Awards

  • Pennsylvania Super Lawyers “Rising Star” listing (environmental law and litigation), since 2017. The Super Lawyers list is issued by Thomson Reuters. Click here to view the selection methodology.

    Eastern District of Pennsylvania Roll of Honor for Pro Bono practice

    Burton Award for Legal Achievement
  • 2012 Stephen E. Hermann Environmental Law Writing Contest (first place)

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Press Releases

Seminars & Speaking Engagements

"Placing Your Company on (Litigation) Hold" presented at the Association of Corporate Counsel's In-house Counsel Conference, Philadelphia, PA, April 20, 2023

"The ARCO Decision: Third-Party, State Law Claims and Superfund Challenges", a webinar presented on behalf of the American Law Institute, August 6, 2020

"The Deal is Done: How to Avoid and Manage Post-Transaction Remorse with a Focus on Environmental Liabilities" presented at the Association of Corporate Counsel’s In-House Counsel Conference, Philadelphia, PA, April 17, 2017