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.

Transportation

Early Environmental Planning for Infrastructure Projects

Learn how early environmental planning helps infrastructure teams manage compliance risk, permitting, costs and schedules before construction begins.

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

Restoring A Critical Southwest Rail Corridor Through Decision-Grade Air Monitoring

A coordinated response paired continuous field intelligence with practical execution to guide evacuation decisions, protect crews and support the staged reopening of a critical freight and highway corridor

Designing a Resilient Transit Line for a Changing Climate

Early climate risk planning aligned designers, constructors and operators on practical adaptations that protect a major transit investment over the long term

Particulate Matter Standards Tighten: What the New PM2.5 Limit Means for Industrial Permitting

Understanding regulatory changes and the role of air dispersion modeling

Leading the ARFF Foam Transition at Naples Airport

A science-led PFAS removal solution for ARFF systems that minimizes rebound, reduces waste and supports fluorine-free foam

Modernizing a National Railroad’s Environmental Audit Program

A risk-based, controls-focused audit redesign improved visibility into compliance risks, strengthened accountability and supported more confident environmental, health and safety decision-making

Enhancing Connectivity in Beverly Hills with Real-Time Environmental Oversight

A continuous field presence and live monitoring keep impacts managed, information shared and coordination steady as construction advances toward the 2028 Olympics and beyond

Restoring Brownfields and Preserving Cultural Heritage at Embreeville Park

A coordinated cleanup, demolition and funding strategy cleared legacy risk, protected sensitive cultural resources and set the site up for long-term community use

Fast-Tracking Regional Climate-Resilient Road Recovery Across Northern NSW

A coordinated approvals program kept priority road and bridge works moving while protecting local waterways and biodiversity