Who We Are
Onterris is a global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect.
Sectors
Access deep environmental expertise tailored to your industry, with solutions built for real-world conditions.
Solutions
Prepare for escalating environmental risks with expert solutions designed to perform under pressure.
Our Thinking
Explore briefs, perspectives and articles that turn insight into action. Discover thought leadership that informs decisions and drives impact. See the ideas shaping environmental solutions and guiding your next move.
Cuture & Careers
Where brilliant people come together to turn environmental science into real-world progress for communities, industry and the planet.

Leak Detection and Repair (LDAR) & Fugitive Emissions Management

Finding and addressing leaks before they become compliance or community concerns
Petrochemical refinery plant with industrial towers and pipelines under a clear blue sky
Oil pumpjack operating in an open field under a blue sky as part of energy production infrastructure.
INTRO

Managing fugitive emissions in complex industrial facilities

Industrial facilities can contain thousands of components that release methane or volatile organic compounds (VOCs). Managing these assets requires a structured program that supports compliance and operational efficiency. Onterris provides LDAR services that help facilities identify, monitor and manage fugitive emissions, including the design and management of leak detection and repair (LDAR) programs aligned with regulatory requirements and site operations. From program setup through monitoring and reporting, we help facilities manage fugitive emissions with confidence.

Supporting Your Industry

Organizations in highly regulated, complex industries rely on our comprehensive air quality testing and analysis expertise to ensure regulatory compliance, operational efficiency and environmental progress.
why it matters

Keeping fugitive emissions controlled across complex assets

  • Large numbers of valves, connectors, pumps and process components requiring inspection
  • Increasing regulatory scrutiny around methane and VOC emissions
  • Reporting complexity slows compliance and decision making
  • Leaks drive product loss, reputational risks and potential safety hazards

Managing fugitive emissions with comprehensive LDAR and methane monitoring programs

Onterris helps clients design, implement and optimize LDAR and methane monitoring programs that align regulatory requirements with operational realities, delivering accurate emissions data, streamlined compliance workflows and improved environmental performance across facilities.
Industrial energy facility with illuminated processing towers at dusk.
Areas of Expertise

Specialized LDAR expertise for regulatory readiness

Explore our leak detection and fugitive emissions capabilities that support confident regulatory decision making. Don’t see what you’re looking for? Reach out to learn about our full suite of air testing services.
OGI and Method 21 inspections
Advanced leak detection technology
Preventative tank services
LDAR inventory services
OGMP 2.0 implementation support
Alt-FEMP set-up and support

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