On May 16, 2024, the EPA published its "New Source Performance Standards for the Synthetic Organic Chemical Manufacturing Industry and National Emission Standards for Hazardous Air Pollutants for the Synthetic Organic Chemical Manufacturing Industry and Group I & II Polymers and Resins Industry" rule. Facilities impacted by the rule are required to implement fenceline monitoring for pollutants like benzene, 1,3-butadiene, chloroprene, ethylene dichloride, ethylene oxide (EtO), and vinyl chloride.
Our Fenceline Monitoring Services
Pilot
Study Preparation
Sample
Station Siting
Compliance
Manual Development
Field
Data Collection
Streamlined
Laboratory Coordination 
Data
Management Solutions
Root
Cause Analysis and Corrective Action Implementation
Pilot Study Preparation
With fenceline monitoring required to begin by July 15, 2026, Trihydro helps facilities conduct pilot studies to assess site conditions. These studies aim to identify potential sources and implement corrective actions before data is made public through EPA's required quarterly CEDRI reporting.
Sample Station Siting
Trihydro aids in establishing fenceline monitoring networks per EPA Method 325A. Regardless of facility layout, our experienced team designs and implements networks meeting regulatory requirements. Our expertise ensures optimal data collection, even in diverse layouts with geographically complex elements.
Compliance Manual Development
We assist our clients by preparing compliance manuals that document the basis for sample station siting and provide step-by-step procedures for sample collection, handling, and reporting. This approach streamlines operations, improves data quality, simplifies compliance reporting, and reduces non-compliance risks.
Field Data Collection
Successful field data collection relies on a rigorous protocol, including consistent sampling procedures following the designated route, and one tube at a time sampling. Our experienced technicians, well-versed in meticulous and consistent collection protocols, are prepared to implement the monitoring procedures outlined in the new HON rule.
Streamlined Laboratory Coordination
Leveraging established relationships with laboratories nationwide, we ensure efficient sample handling and analysis. This minimizes delays, whether we contract directly with the lab or facilitate client-lab communication.
Data Management Solutions
Utilizing Fenceline ProTM, we seamlessly set up new programs or integrate existing data. This end-to-end compliance and data management tool helps reduce the amount of time that our clients spend managing the data and preparing reports for their fenceline monitoring program.
Root Cause Analysis and Corrective Action Implementation
Our success in identifying and mitigating emission sources extends to the new HON rule. Utilizing investigative techniques, such as additional sampling, optical imaging, and real-time monitoring equipment, we can pinpoint emission sources for targeted corrective action, reducing emissions and ensuring compliance.
Our Fenceline Monitoring Software
Leveraging decades of regulatory experience, Trihydro developed Fenceline Pro to tackle the complexities of fenceline monitoring with a comprehensive software solution. This user-friendly platform empowers facility personnel to accurately and efficiently collect, monitor, and report fenceline monitoring data, ensuring compliance with EPA Clean Air Act regulations.
Randy Verret, Regulatory & Environmental Manager Baytex Energy, USA
Through automated data capture, seamless integration of meteorological, field, and lab data, and robust analysis tools, Fenceline Pro enables facility personnel to:
- Utilize a mobile app for automated workflows, offline data collection, and time and sample identification logging.
- Understand offsite impacts with comprehensive data integration and analysis.
- Benefit from built-in logic for automated sample date reminders and duplicate/blank sample compliance.
- Gain immediate access to digital data for Chain of Custody generation, dynamic windrose diagrams, insightful trend charts, and geospatial maps, all with built-in data validation workflows.
- Maintain a readily accessible audit trail for clear compliance demonstration.
- Simplify EPA reporting with automated report generation and regulatory updates.
- Receive timely notifications for missing samples, incomplete data, lab results exceeding action levels, and upcoming EPA report deadlines.
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JEREMY SELL, PE
SENIOR VICE PRESIDENT
AIR & PROCESS SERVICES
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