Turn Fenceline Data Into Clear Decisions

Every facility has a different emissions profile, layout and monitoring objective. Your program should reflect that. Onterris starts with your goals, and then works backward to recommend the best technology, monitor placement and reporting structure to fit your site.

• Regulatory and permit requirement support
• Site review and technology selection
• Monitor and sampling-location selection
• Program design based on target compounds, objectives, site layout and time resolution

The best way to mitigate risk and ensure compliance is real-time monitoring. But not every technology is created equal. Our technology-agnostic approach means the monitoring strategy drives the technology selection, not the other way around. Depending on the objective, we can deploy:

• Open-path monitoring technologies
• Fixed-point measurement systems
• Strategically placed real-time sensors
• Mobile monitoring solutions
• Drones equipped with gas sensors
• Other field-tested emerging technologies to fit your goals

Real-time monitoring is not the right answer for every compound, requirement or budget. Depending on your need, our field experts and in-house scientists can incorporate established periodic sampling methods alongside continuous technologies.

• Passive tube monitoring using EPA Method 325A and 325B
• Canister sampling using EPA TO-15 or Method 327
• Laboratory analysis for speciated results
• Targeted sampling and follow-up investigation
• Coordination of field and laboratory data for greater data reliability and turnaround time

Our Environmental Data Platform (Sensible EDP) integrates real-time, periodic, laboratory, third party and other environmental data together in one place so you can easily understand what is happening across your facility and take action.

• Manage monitoring data in one place
• Validate and review measurements
• Track changing conditions
• Establish alerts and response workflows
• Connect monitoring data with follow-up actions
• Support clear regulatory reporting and decision-making

Air quality programs should not be designed in siloes. Onterris can help support end-to-end air quality programs from permitting and field testing to laboratory analysis and reporting for one accountable partner.

• HON, Refinery MACT and SOCMI-specific fenceline compliance programs
• Air permitting support, regulatory strategy, community outreach programs and reporting
• EPA-approved stack testing for complex facilities
• Leak detection programs built for accuracy, compliance and transparency
• Real-time and ambient monitoring that builds confidence with regulators and communities
• In-house lab analysis to provide clarity in your data every step of the way