United States
Washington - Seattle
Trinity's Seattle staff bring extensive hands-on experience with environmental permitting and compliance in the Pacific Northwest. Since 1996, the Seattle office has served Washington, Alaska, and Montana clients on more than 3,000 projects in a wide range of industries. With an in-depth knowledge of the state, local, and federal permitting and compliance processes, we support industrial clients with authorizing capital projects and environmental compliance.
For assistance with these or other Trinity services, email Anna Henolson or contact us at 253.867.5600.
Industries we serve include:
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Local Leadership
Anna Henolson
Principal Consultant- Phone:
- 253.867.5600
- Email:
- ahenolson@trinityconsultants.com
Washington - Seattle
315 5th Avenue S, Suite 830
Seattle, Washington 98104
- Phone:
- 253.867.5600
- TOLL-FREE:
- 888.555.2340
Washington - Seattle
Our Services Offered
Air Dispersion Modeling
Trinity provides a wide range of air quality modeling consulting services for regulatory applications, emergency planning, and human health assessments.
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.
Ecological Impact Assessment
Large-scale developments and those affecting protected sites usually require an Environmental Impact Assessment (EIA) to be conducted, including an Ecology Chapter or Ecological Impact Assessment (EcIA).
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 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.
Industrial Odor Analysis
Optimize your industry's air quality with Trinity's comprehensive odor management services, including ambient air monitoring, dispersion modeling, emissions analysis, and expert training.
Noise and Vibration
Maximize compliance and minimize noise impact with Trinity's specialized assessments, modeling, and mitigation solutions for industrial and commercial sectors.
Risk Management Program Support
Trinity’s team of RMP experts are committed to identifying, assessing, documenting, and addressing risks to ensure the safety of our clients, community, and the environment for chemical accident prevention.
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.
Sustainability Program Support and ESG Disclosure
Trinity elevates your sustainability journey with expert ESG support, managing risks, seizing opportunities, and ensuring compliance with global standards.
Tank Services
Maximize tank compliance and design efficiency with Trinity's comprehensive environmental services, including permits, emissions calculations, and floating roof expertise streamlined with AP-42 updated tools.
Toxic Release Inventory (TRI)
Ensure EPA compliance and minimize environmental impact with Trinity's expert TRI reporting, advanced chemical management, and pollution prevention services.
TSDF Support
Hazardous Waste Treatment, Storage, and Disposal Facilities (TSDFs)
Waste Compliance Support
Trinity experts provide assistance and guidance to ensure adherence to regulations and standards regarding the handling, storage, treatment, and disposal of waste materials.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
Washington Issued the Draft Industrial Stormwater General Permit
Washington Department of Ecology (Ecology) issued the draft Industrial Stormwater General Permit (ISGP) on May 15, 2024. The current ISGP was issued in November 2019 and is scheduled to expire on December 31, 2024. There are notable changes proposed for the next ISGP which will likely affect most industrial facilities. The public comment period started on May 14, 2024, and will now end on July 15, 2024 at 11:59 pm. Ecology will hold two online workshops and hearings in June. For more deta...
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