See the latest EHS federal and state regulatory updates due to COVID-19


Local Highlights

Local Services in Trinity's Oklahoma Office:

Our Oklahoma offices consist of highly diverse, multi-disciplined experts to assist with your industrial environmental needs, including but not limited to the following:

  • Air Permitting, Compliance, Reporting Support - Trinity was founded on air quality support and the depth of our experience includes a long history of air permitting, compliance, and reporting experience. Specifically, state construction permitting, including Prevention of Significant Deterioration (PSD), operating permits, and continued support through air permit compliance and reporting (annual compliance reports, emissions inventories, toxic release reporting, and more).
  • Air Dispersion Modeling - We have helped hundreds of clients in Oklahoma with a variety of regulatory modeling (e.g., AERMOD and CALPUFF) and risk/exposure modeling (e.g., Human Exposure Model and BREEZE-Incident Analyst).
  • Multimedia - We provide National Pollutant Discharge Elimination System (NPDES) support including: stormwater, wastewater, and pretreatment permitting and compliance. Our staff also develop Spill Prevention, Control, and Countermeasure (SPCC) Plans, Facility Response Plans, Emergency Response Plans, and Integrated Contingency Plans (ICP) for various industries with the available Professional Engineers (P.E.) in the state of Oklahoma to certify these plans. Moreover, we specialize in helping our clients maintain these plans as living documents.
  • Tank Emissions Analysis and Inspections - We have staff experts in assessing tank emissions using the latest guidance and factors from EPA and ODEQ.
  • Environmental Site Assessments - We assist buyers, sellers, and brokers with limiting liability through our Phase I ESA work.
  • Regulatory Compliance Audits - We help clients navigate complex and sometimes overlapping environmental regulations via thoughtful compliance auditing.
  • Strategic Planning - We are a part of the strategic planning team for several clients; helping them to make go-no go decisions from an environmental perspective on projects, site development, etc.
  • Environmental Manager Support - For dozens of clients we help maintain day-to-day environmental compliance and stay up-to-date on all permitting requirements.
  • Engines - We are home to the author of Trinity's Understanding Engines (RICE MACT) course.

If you are worried about environmental delays and pitfalls, then our Oklahoma staff is here to guide you through any permitting or compliance tasks. We guide our clients through the most complex, and sometimes, overwhelming tasks with certifying compliance so that their companies can focus on production.


Call us in Oklahoma City (405) 848-3724 or Tulsa (918) 622-7111, or email Jeremy Jewell.

Oklahoma Environmental News

  • Recently Proposed OAC Changes  - 

    The Air Quality Advisory Council (AQAC) recently held regular (June 17) and special (July 22) meetings to discuss OAC rule changes proposed by the Oklahoma Department of Environmental Quality (DEQ) for Title 252, Chapter 4, Subchapter 7, and Chapter »

  • ODEQ Is Asking 12 Sources for Regional Haze Controls Analyses  - 

    At the June 17 Air Quality Advisory Council, Cooper Garbe with the ODEQ AQD unveiled the following list of 12 sources from which the ODEQ is requiring air pollution controls analyses, known as four-factor analyses, under the regional haze »

  • EPA Approves OK SIP Updates  - 

    On August 1, 2019, EPA Region 6 approved several revisions to the Oklahoma State Implementation Plan (SIP). The proposed SIP was submitted on February 14, 2017, and included changes to the following subchapters and appendices of OAC »

  • Updates on ODEQ's Electronic Air Permitting and Emission Inventories (from the June 20th EFO Regulatory Newsreel)  - 

    Lee Warden, Air Quality Division Engineering and Permitting Manager, discussed the advantages of the online air permit application system. She pointed out that permit applications are being processed significantly faster in the online system, than »

  • Environmental, Health, and Safety Audit Privilege Act  - 

    Following is a quick summary of Oklahoma's new Audit Privilege Act based on a presentation from Stephen Baldridge, Senior Counsel to Oklahoma Secretary of Energy & Environment, at the June 20th EFO Regulatory Newsreel:Effective date is 11/1/2019The »

  • Revised DEQ Guidance for Representative Samples  - 

    After reviewing industry comments, the Oklahoma DEQ has released a revised proposed guidance document for determining when to use a representative analysis for oil and gas facilities. The document also details criteria on how representativeness is »

More News

Trinity's Tulsa Location
Local Leadership
Jeremy Jewell, CM
Principal Consultant
5801 E 41st St
Suite 450
Tulsa, OK 74135
P: (918) 622-7111
F: (918) 512-7084
Upcoming Training in Oklahoma
Air Quality Permitting in Oklahoma

- Tulsa, OK

Environmental Reporting Requirements in Oklahoma

- Oklahoma City, OK

more training
Upcoming Seminars in Oklahoma
more training
Upcoming Conferences in Oklahoma
Environmental Federation of Oklahoma's (EFO) 29th Annual Meeting and Trade Show 2020
Location: Tulsa, OK
Oct 12, 2020