United States
Washington, D.C. - EC
Established in 2001, Trinity’s Washington, D.C. office is highly regarded as a quality-focused environmental consulting firm with extensive experience assisting facilities within the District of Columbia. Our talented and experienced staff allows Trinity to deliver insightful solutions efficiently and cost effectively. Our office has in-depth knowledge of the local and federal permitting and compliance processes our clients face. Trinity is a proud member of GSA Advantage to offer federal agencies an easy way to work with us. Our contract number is 47QRAA24D0020.
Our team of seasoned environmental professionals are able to provide up-to-date knowledge and expertise whatever your environmental permitting or compliance need may be in this ever-changing environmental climate.
Local Leadership
Susan Barnes
Principal Consultant- Phone:
- 240.379.7490
- Email:
- sbarnes@trinityconsultants.com
Washington, D.C. - EC
5320 Spectrum Drive, Suite A
Frederick, Maryland 21703
- Phone:
- 240.379.7490
- TOLL-FREE:
- 888.555.2340
Washington, D.C. - EC
Our Services Offered
Air Quality Permitting
Trinity Consultants are experts in air permitting support for compliance with the Clean Air Act, offering comprehensive services from strategy, application development, and agency negotiations.
Auditing and Verification
Boost EHS compliance and performance with tailored Auditing & Verification solutions for regulatory compliance, management systems, and risk management.
Chemical Inventory Reporting Services
Streamline EPCRA compliance with expert SDS/Tier II reporting, audits, hazard analysis, and cross-media impact management for chemical safety from Trinity.
Digital Solutions Approach
EHS and Sustainability Reporting
Streamline your EHS reporting with Trinity's regulatory compliance and sustainability reporting expertise for accuracy, efficiency, and reduced compliance risks.
EHS Business Risk Management
Trinity takes a holistic approach to elevating your EHS risk management, encompassing compliance, operational risks, sustainability, and business performance.
EHS Management Systems
Trinity's professionals bring decades of management system experience to client engagements, encompassing a complete spectrum of EHS&Q systems: ISO14001, RC14001, ISO 45001, ISO 50001, and ISO 9001.
Spill Prevention, Control, and Countermeasure Plan (SPCC)
Trinity has the expertise to develop SPCC Plans across numerous industrial facilities and can assist with plan revisions and program audits.
Stormwater Pollution Prevention Plan (SWPPP)
Trinity is the leading industry regulatory expert in SWPPP stormwater runoff from industrial facilities and construction sites that can contaminate rivers, lakes, and coastal waters.Insights
Local News
DOEE Proposes to Revise Existing Source Category Permits
Answering the Frequently Asked Question: Is the New Monthly Reporting in CAERS Required?
DOEE Proposes Amendment for Opacity Limits for Fuel-Burning Equipment
DOEE Proposes Renewing and Revising Source Category Permits for Natural Gas and Diesel-Fired Emergency Engines Subject to RICE MACT
On March 14, 2025, the District of Columbia Department of Energy and the Environment (DOEE) proposed to renew and revise the existing source category permits for diesel-fired and natural gas-fired emergency engines. These revised source category permits apply to engines that are exempt from the federal New Source Performance Standards (NSPS) but are still subject to the National Emission Standards for Hazardous Air Pollutants (NESHAP) Subpart ZZZZ (commonly referred to as the “RICE ...
Read More