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


Local Highlights

Trinity staff bring extensive hands-on experience with Arizona environmental permitting and compliance. Since 2006, Trinity's Arizona office, based in Phoenix, has locally served clients on more than 1,100 projects in a wide range of industries.  With an in-depth knowledge of the local and federal permitting and compliance processes, we support industrial clients with authorizing capital projects and with enforcement negotiations in various jurisdictions in AZ (Pinal County, Pima County, Maricopa County, Gila River Indian Community) as well as EPA Region 9 and Arizona Department of Environmental Quality. Industries we serve:

  • Aerospace, Airlines, and Automobile
  • Aggregates, Construction, Cement and Concrete 
  • Data Center
  • General Manufacturing and Surface Coating
  • Electric Power Generation
  • Engine and Equipment Manufacturers
  • Mining, Minerals, Metals and Metal Products
  • Petroleum Refining
  • Semiconductor and Electronics

Specific skills and experience we offer our clients:

  • Air Quality Permitting, Compliance, Reporting and Dispersion Modeling - Local AZ permitting, Prevention of Significant Deterioration (PSD), Nonattainment NSR, air dispersion modeling (AERMOD, CALPUFF, HYSPLIT, HEM3 etc.), Title V permitting, and applicability determinations for federal and AZ-specific air standards. Annual/semiannual reports, emissions inventories, Tier II and toxic release reports (TRI), Greenhouse Gas Inventories (GHG), CEMS management
  • Environmental strategy, due diligence, and advocacy - Phase I/II Environmental Site Assessments, full risk impact evaluations, and valuating the true operating capacity of assets based on restrictions and representations in environmental documents and permits
  • Air Pollution Abatement Equipment and Exhaust Management - Acid gases, ammonia, and volatile organic compounds, minimizing impact to production, eliminate exhaust duct plugging, safety issues (including preventing potential fires and explosions), reduce stack visible emissions, and trouble-shoot air abatement equipment issues
  • Stormwater and Wastewater Management - We provide Arizona Pollutant Discharge Elimination System (AZPDES) support for stormwater, wastewater, and pretreatment permitting and compliance, Stormwater Pollution Prevention Plans (SWPPP) for Multisector General Permits (MSGP), and training
  • Spill Prevention - Spill Prevention, Control, and Countermeasure (SPCC) Plan support that includes plan preparation, review, employee trainings, and inspections; we are Arizona licensed professional engineers who can certify plans when required 
  • Hazardous Chemical Management and Release Reporting - developing Facility Response Plans, Emergency Response Plans, and Integrated Contingency Plans (ICP) for various industries
  • Multimedia Compliance and Due Diligence Auditing - Conduct effective compliance audits, determine compliance status, corrective action plans, and due diligence audits prior to mergers and acquisitions
  • National Environmental Policy Act (NEPA) and Environmental Impact Statement (EIS)- NEPA and EIS project management, documents, and analyses
  • Tank Emissions Analysis - Using the latest guidance and factors from EPA and BREEZE TankESP software 
  • Risk Management Plan (RMP)/ Process Safety Management (PSM) - Develop and implement PSM/RMP programs, including off-site consequence analysis modeling and performing Process Hazards Analysis (PHA), compliance audits for various facility types and RMP program levels.
  • Training and Staffing- Offer more than 300 professional training courses annually for EHS professionals, and custom training courses that range from one hour to several days. Also provide temporary or permanent staffing, see OneSource Service sheet for more details.
  • Odor and Noise Assessments - Conduct odor concentration modeling and predict the effect of different abatement strategies using SCREEN3, AERSCREEN, AERMOD, and CALPUFF; perform noise and vibration monitoring and impact assessments including predicting noise impacts, measurement and characterization of ambient sound levels, selecting noise mitigation, and architectural acoustics
  • Climate Change, Sustainability and Environmental Management Systems (EMS) - GHG emissions quantification, footprinting, mitigation, benchmarking, offset projects, and verifications; GHG BACT and control analyses; Life Cycle Assessments (LCA) and Environmental Product Declarations (EPD); Energy Efficiency Assessments; ISO 14001/18001/50001 program and EMS development, auditing, and support

For assistance with these or other Trinity Services, email Disha Gadre or contact us at 602.274 2900.

Arizona Environmental News

  • EPA Proposes to Retain Existing NAAQS for Ozone  - 

    On July 13, the U.S. Environmental Protection Agency (EPA) proposed to retain, without changes, the current 2015 National Ambient Air Quality Standard (NAAQS) for ozone. EPA stated that between 2017 and 2019, ozone concentrations fell four percent »

  • Method 9 Evaluation Requirements Still In Effect  - 

    With the new safety requirements and uncertainty surrounding COVID-19, obtaining and maintaining U.S. EPA Method 9 certifications may continue to prove difficult for the foreseeable future. Air quality permits may require evaluations conducted by »

  • ADEQ Request Input on Paved Road Dust Controls  - 

    The Arizona Department of Environmental Quality (ADEQ) is seeking input from stakeholders in the Yuma PM10 Planning Area on control methods for paved road dust emissions. Stakeholders can nominate pre-selected control methods or propose their own »

  • What’s new in the 2019 Stormwater Multi-Sector General Permit  - 

    The Stormwater Multi-Sector General Permit (MSGP) authorizes discharges of stormwater to Waters of the U.S. (WOTUS). The Arizona 2019 MSGP replaced the 2010 MSGP and became effective on January 1, 2020. Notice of intents were required to be »

  • PCAQCD Proposes Rule Updates for Annual Emissions Inventory Questionnaire and Emissions Statements  - 

    The Pinal County Air Quality Control District (PCAQCD) has proposed revisions to its Emissions Statements and Annual Emissions Inventory Questionnaire Rules (§3-1-103) as follows:Only Class I, II, and III sources must have the questionnaire »

  • COVID-19 Impacts on Arizona Air Quality Agency Operations  - 

    Due to the COVID-19 virus outbreak, Arizona air quality agencies are adjusting their day-to-day operations as many non-essential government staff transition to working from home. Industry personnel should be aware of changes to air district »

More News

Trinity's Phoenix Location
Local Leadership
Disha Gadre
Managing Consultant
1661 E Camelback Road
Suite 290
Phoenix, AZ 85016
P: (602) 274-2900
F: (480) 222-4561
Upcoming Training in Arizona
Dispersion Modeling for Managers

- Phoenix, AZ

NSR/PSD Compliance Workshop

- Phoenix, AZ

Title V Compliance Workshop

- Phoenix, AZ

EHS Audit Skills and Techniques

- Phoenix, AZ

Advanced TRI Reporting Workshop

- Phoenix, AZ

more training
Upcoming Seminars in Arizona
more training