Gregory A. Clark

Gregory A. Clark: Attorney with Keller and Heckman LLP
  • Associate at Keller and Heckman LLP (107 Attorneys)
  • Suite 500 West, 1001 G Street, N.W., Washington, DC 20001
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Gregory Clark practices in the area of environmental law.

While in law school, Mr. Clark served as an articles editor for the Virginia Journal of Law and Technology. Prior to law school, Mr. Clark worked as an EPA contractor, primarily for the Water Security Division in the Office of Groundwater and Drinking Water. In this arena, Mr. Clark worked on validation of molecular biology and microbiology methods and on emergency preparedness. He led development of what is now EPA's Water Laboratory Alliance Response Plan, which was developed to aid laboratories in responding collaboratively on a regional scale to natural, intentional, and unintentional water contamination incidents.


•Jan 16, 2018 Hazardous Waste Management Pitfalls for Vapor and E-Liquid Product Manufacturers and Retailers
•Dec 29, 2017 EPA Extends Comment Period for Proposed Mercury Reporting Rule to January 11, 2018
•Aug 11, 2017 EPA Publishes Final Inventory Reset Rule, Sets Reporting Dates
•May 05, 2017 EPA Issues Proposal for TSCA Chemical Risk Evaluation
•May 05, 2017 EPA Issues TSCA Proposal for Prioritization of Chemicals for Risk Evaluations
•Jul 01, 2016 Reporting Period Begins for 2015 CARB Survey
•May 25, 2016 House Passes TSCA Reform H.R. 2576 - Senate Vote Slated for Later this Week


•Mar 15, 2018 Webinar: U.S. Chemical Regulation - What to Expect and How to Prepare in 2018
•Oct 18, 2017 Annual Chemical Control Law and Regulation Seminar
•Aug 09, 2017 TSCA 30/30: August 9, 2017


•Nov 08, 2017 Peter de la Cruz, Manesh Rath, JC Walker and Greg Clark Attend Vinyl360: Vinyl Industry Annual Conference

Areas of Practice (5)

  • Biotechnology
  • Chemical Control
  • Environmental
  • Fuels
  • Pesticides

Education & Credentials

Contact Information:
202.434.4302  Phone
202.434.4646  Fax
University Attended:
James Madison University, B.S., magna cum laude, 2005
Law School Attended:
University of Virginia, J.D., 2010
Year of First Admission:
District of Columbia; 2010, Virginia


•American Bar Association


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