Welcome to Trinity Consultants Indiana

At Trinity Consultants’ Indianapolis office, we bring decades of hands-on experience and deep local insight to help you stay ahead in an ever-evolving regulatory environment. Our team of seasoned environmental professionals delivers timely, expert guidance no matter if you are tackling complex permitting challenges or ensuring ongoing compliance.

With a strong legacy of supporting Indiana clients across a diverse industry landscape, we specialize in air, water, and waste services that are critical to sustainable operation and development across the state. Being local to Indiana, we understand the unique environmental dynamics of Indiana—and we’re here to help you thrive within them.

Indiana - Specific Expertise

Key Service Specifics by State Regulation

Trinity staff bring extensive hands-on knowledge of Indiana environmental permitting and compliance.

From New Source Review and Title V permits to Registrations, we navigate the Indiana Department of Environmental Management (IDEM) air quality permitting process to accelerate approvals, minimize risk, and keep projects compliant across Indiana. Indiana-focused air dispersion modeling that meets IDEM’s requirements—to streamline New Source Review (NSR)/Prevention of Significant Deterioration (PSD) permitting.

We deliver Indiana-specific environmental reporting—preparing and filing IDEM-compliant air, water, and waste submittals [(from emissions inventories and Indiana-specific compliance monitoring reports to Tier II, Toxic Release Inventory (TRI), Toxic Substances Control Act (TSCA), and Greenhouse Gas(GHG)]—so your operations meet state and federal deadlines with confidence.

Our Indiana office provides environmental multimedia and compliance services that address air, water, and waste regulations across all project phases. Our experts streamline permitting, monitor regulatory changes, and develop strategies that minimize risk, ensure full compliance, and optimize performance across every stage of the project. We also offer on-site support to keep projects moving smoothly and efficiently.

Indiana-focused EHS Auditing & Inspection Support that helps facilities navigate IDEM and federal requirements with proactive compliance reviews, onsite inspection readiness, and corrective action plans tailored to site-specific requirements.

With deep expertise in RCRA, TSCA, CERCLA, and industry-specific standards, we offer practical, tailored solutions that meet the needs of industrial, commercial, and institutional facilities across Indiana.

We help our clients navigate IDEM’s water requirements—supporting National Pollutant Discharge Elimination System (NPDES) permitting as well as Spill, Prevention, Control, and Countermeasure (SPCC) and Stormwater Pollution Prevention Plans (SWPPP).

Explore Our Expertise

Learn about our services.

Air Quality

Ensure air quality compliance with Trinity Consultants. We provide air permitting,...
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Chemical Compliance

Simplify chemical compliance and reduce risk through expert support for TSCA, TRI,...
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EHS Management

Help your business stay safe and compliant through expert EHS management services s...
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ESG & Sustainability

Build your Sustainability strategy with Trinity Consultants. We support decarboniza...
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Waste Management

Turn waste into opportunity by partnering for expert support for waste compliance,...
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Water Quality

Protect your water resources through expert water quality monitoring, SPCC, SWPPP,...
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Can’t find what you need? Let us help you find the right service.

Trinity Consultants serves many areas over multiple industries. If you don’t see what you’re looking for here, check out the individual divisions to find it.

Environmental Consulting | Water & Ecology | Built Environment | Life Sciences

Meet the leader behind our Indiana location.

Our Indiana office is here to serve your needs. Contact us today!

Environmental Consulting Environmental Consulting
Water & Ecology Water & Ecology
Built Environment Built Environment
Life Sciences Life Sciences

Indianapolis

Office Leader

Emily Stewart
Emily Stewart
Manager of Consulting Services
Environmental Consulting
8900 Keystone Crossing
Suite 1070
Indianapolis, Indiana 46240

Indiana Resources

GHG and Sustainability News Updates in Indiana
GHG and Sustainability News Updates in Indiana
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New HFC Management Rule: What Indiana Facilities Need to Know for 2026 Compliance
New HFC Management Rule: What Indiana Facilities Need to Know for 2026 Compliance
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Final Rule: NOx RACT for Lake and Porter Counties
Final Rule: NOx RACT for Lake and Porter Counties
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Indiana Air Permitting: Emergency Affirmative Defense Rollback
Indiana Air Permitting: Emergency Affirmative Defense Rollback
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Related Training

Training Courses

May 21, 2025
For more information on training courses, webinars, and seminars click below.
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