Arizona

Throughout Arizona and its diverse air permitting authorities (ADEQ, MCAQD, PCAQD, PDEQ, GRIC, Navajo Nation, and EPA), Trinity has the local experience and relationships to understand agency expectations and help you develop applications that meet those expectations. This includes air dispersion modeling and toxics evaluations when needed.

Arizona-focused EHS Auditing & Inspection Support that helps facilities navigate local, state, and federal requirements with proactive compliance reviews, onsite inspection readiness, and corrective action plans tailored to mining, energy, semiconductor, data centers, manufacturing, and other high-growth sectors statewide.

From stormwater permits, to wetlands delineations, water rights, AZ-specific aquifer protection requirements, SPCC plans, and CWA 401/402/404 coordination including for direct and indirect discharges (NPDES/AZPDES), we can help you secure timely approvals and sustain compliance from planning through operations.

We help you understand and prepare the federal, state, and local reports that apply to your operations. This includes EPCRA Tier II , Refrigerant/HFC, ADEQ and EPA Waste Generator, local Air Emission Inventories, Discharge Monitoring, GHGs, Pollution Prevention (P2) Plan, TRI, and TSCA reporting.

Air permitting in Arizona often involves dispersion modeling. Our office has conducted modeling studies all over the state to support regulatory compliance, permitting, health risk assessments, and emergency planning by providing quantitative data on how emissions affect the surrounding environment. We apply a wide range of tools including AERMOD, CALPUFF, GRAL, and Photochemical Grid Modeling (PGM), using high-performance computing solutions to meet client-specific needs.