LAWYER PROFILE
David J Armstrong

David J Armstrong

USA 2026

Chambers ranking badge
Chambers ranking badge

Ranked in 1 practice area

About

Provided by Ballard Spahr LLP

Practice Areas

David J. Armstrong is the Managing Partner of Ballard Spahr's Phoenix office and a member of the firm's Expanded Board. He is an experienced environmental litigator, but also devotes a significant amount of his practice to advising clients on environmental risks and liabilities in corporate and real estate transactions and regulatory compliance.

David has significant experience in prosecuting and defending cost recovery and contribution claims under federal and state environmental statutes and defending environmental enforcement matters. He has vast experience conducting environmental due diligence, negotiating environmental indemnity agreements, and drafting prospective purchase agreements and environmental insurance policies.

Career

Admissions:

Arizona

Pennsylvania

U.S. District Court for the District of Arizona

U.S. District Court for the District of New Jersey

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

U.S. Court of Appeals for the Ninth Circuit

Federal courts in Connecticut, Nevada, New York, and Oregon and the Navajo Nation Tribal Court (admitted pro hac vice)

Professional Memberships

State Bar of Arizona

Member, Environmental and Natural Resources Law Section

Arizona Chamber of Commerce, firm liaison

Arizona Food Bank Network, Former Board Chair, member and Governance Committee Chair

Arizona Petroleum Marketers Association, Member, Board of Directors

Personal

Temple University James E. Beasley School of Law (J.D.)

Editor-in-Chief, Temple Environmental Law & Technology Journal; Recipient, Barrister Award for Trial Advocacy

College of Charleston (B.A.)

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Environment - Arizona

Band 2
Band 2

Individual Editorial

David Armstrong represents clients in environmental litigation, including mandates concerning groundwater contamination, as well as environmental compliance due diligence in relation to transactions.

Strengths

Provided by Chambers

  • David is a smart, capable lawyer.

    EnvironmentChambers Guide to the USA
  • David Armstrong is the best you can get.

    EnvironmentChambers Guide to the USA

Ranked Individuals at Ballard Spahr LLP (189)

Alaska

Arizona

California

Colorado

Delaware

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership