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David L. Wallis, Environmental Attorney in Phoenix, Arizona

focused on Environmental and Litigation

Phoenix, AZ

Trusted environmental attorney serving Phoenix.

2
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Quick answer

David L. Wallis is an attorney based in Phoenix, ARIZONA. The practice focuses on Environmental and Litigation.

Based in
Phoenix, ARIZONA
Experience
attorney
Known for
Environmental · Litigation
  • Handles Environmental and Litigation matters from Phoenix, ARIZONA.
  • Recognized with Best Lawyers in America — Environmental Law (2026).

About David L. Wallis: David L. Wallis is an attorney based in Phoenix, ARIZONA. The practice focuses on Environmental and Litigation.

Areas of practice

Practice areas handled by David L. Wallis

David concentrates on environmental and litigation. Each area below outlines the kind of case David handles, typical outcomes to expect, and how the intake process starts.

Environmental cases in Phoenix, Arizona

David takes environmental matters in Phoenix, Arizona. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before David agrees to represent you.

Litigation cases in Phoenix, Arizona

David takes litigation matters in Phoenix, Arizona. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before David agrees to represent you.

Biography

About David L. Wallis — Attorney of Arizona environmental experience

David L. Wallis is an attorney based in Phoenix, ARIZONA. The practice focuses on Environmental and Litigation.

David practices in the area of environmental and natural resources law, focusing on environmental compliance auditing, Superfund, solid and hazardous waste, asbestos, water quality, underground storage tank, environmental management systems, environmental remediation and environmental due diligence matters. He has conducted over 120 comprehensive environmental audits throughout the United States and internationally over the past eight years. He was recently named among the 2013 Best Lawyers in America, and also a BTI Client Service All-Star for 2013 by the Wellesley, Mass. based firm, BTI Consulting Group, Inc.

Representative Experience

  • Conducting over 120 comprehensive environmental compliance audits in 30 states, Brazil, Canada and Venezuela during the past eight years.
  • Representing clients on over 250 Real Estate Environmental Site Assessments.
  • Participating in the development of environmental legislation and regulations in four states and on the federal level. From 1995-2000, Mr. Wallis was the primary author of the Arizona Solid Waste Statute and amendments to Arizona’s Hazardous Waste, Special Waste, Used Oil and Waste Tire Statutes.
  • Representing clients in over 18 cost recovery actions under Superfund, solid waste and underground storage tank laws.
  • Successfully obtaining government agency closure of contaminated sites in Arizona, California, New Mexico, Texas and Washington.
  • Serving as Newsletter Editor (1994-96) and Executive Council Member (1996-2001) of the Environmental and Natural Resources Law Section of the State Bar of Arizona; Chairman of the Arizona Chamber of Commerce Solid and Hazardous Waste Subcommittee (1997-present); Chairman of the Arizona Solid Waste Coalition (1995-present); member, Maricopa Association of Governments Solid Waste Advisory Committee (1998-present); and Visiting Instructor on environmental law at Arizona State University (1989-present).

    David's approach to environmental cases

    David practices in the area of environmental and natural resources law, focusing on environmental compliance auditing, Superfund, solid and hazardous waste, asbestos, water quality, underground storage tank, environmental management systems, environmental remediation and environmental due diligence matters. He has conducted over 120 comprehensive environmental audits throughout the United States…

    The kind of cases David takes

    David reviews new inquiries case-by-case for environmental and litigation matters in Phoenix and the surrounding Arizona area.

    Credentials

    David L. Wallis's legal education and bar admissions

    • Brigham Young University

      J.D. · 1988

    • Brigham Young University

      — · 1988

    • Brigham Young University

      BA · 1985

    Jurisdictions

    David's state bar admissions

    • Arizona, State Bar o

      ACTIVE

    • Utah, Utah State Bar

      ACTIVE

    David studied at J.D. in Brigham Young University, — in Brigham Young University, and BA in Brigham Young University.

    Law school and academic background

    David completed J.D. in Brigham Young University, — in Brigham Young University, and BA in Brigham Young University. Formal legal training is one signal of substantive knowledge — the day-to-day practice David runs in Arizona is where that training gets applied to real client questions.

    Recognition

    Awards, publications, and recognition of David L. Wallis

    David has received 12 formal recognitions from bar associations, industry bodies, and peer-review services.

    • Best Lawyers in America — Environmental Law

      2026

    • Best Lawyers in America — Litigation - Environmental

      2026

    • Best Lawyers in America — Additional Areas of Practice:

      2026

    • Best Lawyers in America — Natural Resources Law

      2026

    • Best Lawyers in America — Oil and Gas Law

      2026

    • Best Lawyers in America — Special Focus:

      2026

    • Best Lawyers in America — Environmental Cleanup

      2026

    • Best Lawyers in America — RCRA/Hazardous Waste

      2026

    • Best Lawyers in America — Real Estate

      2026

    • Best Lawyers in America — Solid Waste

      2026

    • Best Lawyers in America — Superfunds/Environmental Remediation

      2026

    • Best Lawyers in America — Waste

      2026

    Legal awards and honors

    Best Lawyers in America — Environmental Law (2026). Best Lawyers in America — Litigation - Environmental (2026). Best Lawyers in America — Additional Areas of Practice: (2026). Best Lawyers in America — Natural Resources Law (2026). Best Lawyers in America — Oil and Gas Law (2026). Best Lawyers in America — Special Focus: (2026).

    Locations

    David L. Wallis's office in Phoenix

    David's primary office is at 2575 East Camelback Road, Suite 1100, Phoenix, Arizona, 85016. In-person meetings are by appointment; a phone intake usually comes first.

    Main office

    2575 East Camelback Road, Suite 1100

    Phoenix, Arizona 85016

    Open in Google Maps

    Client feedback

    Client reviews of David L. Wallis

    David has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

    No reviews yet

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    Hiring guide

    How to hire David L. Wallis — what to expect in your first consultation

    Working with a new environmental attorney should feel structured. Here's how the first two conversations with David usually go, from the moment you request a consult to the day representation begins.

    Consultation formats and pricing

    David charges for the initial consult. That fee is credited toward representation if you retain David's office.

    What to bring to your first meeting

    Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; David will tell you what matters and what doesn't.

    Questions to ask a environmental attorney in Phoenix, Arizona

    A short list to run through before you commit: How many environmental matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

    Fees & payment

    Fees, payment methods, and consultation options for David

    David discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in environmental practice — ask which fits.

    Hourly rates, contingency fees, and flat-fee options

    Every environmental matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. David confirms the model in the engagement letter before any work starts.

    Payment methods and payment plans

    David's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many environmental practices work with clients on structured schedules.

    Frequently asked

    Frequently asked questions about David L. Wallis

    • How much does it cost to hire David for a environmental case?

      Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. David walks through the likely range during the consult so there are no surprises.

    • Does David offer a free consultation?

      David charges for the initial consult; that fee is credited toward representation if you retain David's office. Some environmental attorneys offer free consults — check David's current terms during booking.

    • How long do environmental cases in Arizona typically take?

      Simple environmental matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. David gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

    • Can David take my case if I'm outside Phoenix?

      David is licensed in Arizona. Matters governed by Arizona law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — David will tell you if the case is a fit or refer you to someone closer to your court.

    • What should I bring to my first meeting with David?

      Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. David will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

    • Is David accepting new environmental clients right now?

      David's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

    Areas served

    Environmental attorneys serving Phoenix, Tucson and Scottsdale in Arizona

    David handles environmental matters throughout Arizona. Each city below is a direct link into the search page for verified environmental attorneys in that community.

    More counsel

    If David's intake is full or the fit isn't right, these environmental attorneys in Phoenix handle similar matters. Every profile below is verified and open to consultations.