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.

Environmental Transaction Advisory

Environmental clarity before the deal closes and confidence beyond it
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Intro

Navigating Environmental Transaction Risk With Greater Confidence

Environmental and occupational risks can shape asset value, regulatory exposure and long-term performance well before a transaction closes. Onterris helps strategic and private investors identify material environmental, regulatory and legacy matters early, so they can evaluate financial risk with greater clarity across growth, acquisition, divestment and portfolio decisions. By connecting diligence, compliance maturity and environmental strategy, this work helps organizations make informed moves in highly regulated industries.
why it matters

Transaction risk extends far beyond closing

  • Environmental, health and safety risks can affect asset value and operational readiness
  • Regulatory gaps can increase liability exposure and slow critical decisions
  • Weak compliance systems can undermine stakeholder confidence during change
  • Post-close performance depends on clearer insight across operations and governance
  • Early risk identification supports stronger action across the investment lifecycle

Strengthening transaction decisions with earlier risk insight

Environmental transaction advisory supports strategic and private investors through key moments across the investment lifecycle. From early diligence through post-close integration and investment realization, the focus stays on identifying material environmental, regulatory and legacy risks so decision-makers can move forward with greater clarity.
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Our Capabilities

Focused capabilities that support stronger investment decisions

Environmental transaction diligence
Environmental claims validation and proof of concept
Gap analysis and corrective action estimation
Legacy and corporate liability evaluation
Portfolio assessment
Stakeholder communication and reporting
Corrective action implementation and ongoing compliance
Sell-side diligence and data management

Related Solutions

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Environmental Permitting, Air & Water Compliance Services

Working through air, water and land permitting requirements and building compliance programs that hold up under regulatory review, across regulated industries.
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Health, Safety & Chemistry

Bringing scientific precision to critical decisions

Explore Related Insights

How Industry Is Using Technology to Treat PFAS for Cleaner Legacies

Advanced treatment technology and scaled approaches are enabling industrial operators to address PFAS, reducing risk while aligning with evolving regulatory expectations

Decommissioning a Legacy Textile Site With Reliable PFAS Wastewater Treatment

Reliable commissioning and remote support maintained steady treatment performance in complex lagoon water as the site progressed toward closure

Protecting Drinking Water for Pender County: Turning PFAS Uncertainty Into a Long-Term Plan

Creating a reliable testing and treatment roadmap that supports capital planning for long-term safe drinking water