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.
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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.

Remediation

Remediation decisions shape timelines, liability and community trust, so work starts with clear site insight and defensible plans. Explore the content below for insight on investigations, cleanup and closure pathways that turn uncertainty into action alongside safer reuse.

Ontario O. Reg. 406/19: 2027 Excess Soil Rules

Ontario’s excess soil landfill restriction takes effect Jan. 1, 2027. Learn how O. Reg. 406/19 affects reuse planning, QP support and project schedules.

AFFF Transition Is Not Just a Foam Swap

Removing legacy foam without addressing residual contamination, system compatibility and waste management creates serious operational and environmental risks long after the changeout is complete

Keeping Sydney Metro West Tunnelling On Track With Audit-Backed Environmental Delivery

A multi-site investigation, remediation and validation program aligned with NSW EPA accredited Site Auditor review cycles enables construction teams to progress safely and confirm site suitability

Strengthening PFAS Data Integrity Through Stage 4 Data Validation

Rigorous data review can uncover issues that summary reports do not show, protecting data integrity across the project lifecycle

Critical Thinking in Data Validation: How Small Errors Can Have Big Impacts

Critical thinking and professional judgment help uncover small data issues before they become costly project risks

Before You Buy a Brownfield: Keep the Bona Fide Prospective Purchaser Defense Intact

Environmental liability protection begins with thorough pre-acquisition due diligence, but preserving that protection requires buyers to actively manage environmental obligations after closing

Accelerating Remote Groundwater PFAS Treatment with Modular Systems

Compact deployment, remote operation and a reliable treatment design supported consistent PFAS treatment across six groundwater sites

Brownfields After the BIL Funding Peak: What EPA’s Planning Signals Reveal About 2027

Opportunity remains with U.S. EPA Brownfields Funding, but fiscal year 2027 will reward communities that combine disciplined planning, evidence-based decision-making and strong execution

Before You Buy a Brownfield, Protect the Deal With All Appropriate Inquiries

A Phase I ESA protects buyers from CERCLA liability when it is current, complete and supported by responsible action after closing

Precise Site Investigations Proactively Reveal Redevelopment Risks

Advanced technologies and targeted material characterization help uncover hidden site conditions and manage environmental liabilities before brownfield redevelopment begins
Close-up of bubbles in water, scientific background of cosmetic essence, serum under a microscope. Hydration The concept of developing cosmetics for skin care. Beauty Hydration background
OUR THINKING

Explore all briefs, perspectives and articles that turn insight into action.

Discover thought leadership that informs decisions and drives impact.

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