Welcome to Cardno ERI

As part of Cardno’s Engineering and Environmental Division, Cardno ERI has provided responsive and integrated environmental consulting services for more than 20 years.

Clients rely on Cardno ERI’s environmental assessment and remediation services to provide the necessary information to evaluate and minimize environmental risks, facilitate property transfers and sales via due diligence, determine the best remediation strategies according to their priorities, and maintain regulatory compliance for operating facilities.

“The company provides responsive and safe service in field operations, with specialized field crews leveraging state-of-the-art technologies and resources,” said Cardno ERI President Keith Romstad.

“We have a consistent record achieving regulatory site closures for properties impacted by various chemical constituents, with more than 400 sites closed since 1993. We also have delivered ongoing success addressing complex and diverse remediation challenges.”

Clients rely on Cardno ERI’s experts for arbitration hearings and technical experts that provide litigation support, while their lead and asbestos assessment services work to minimize health risks.

The team has 130 field and professional staff located throughout the United States.

Fluidized Bed Bioreactor

Cardno ERI has developed a line of practical, effective, and green bioreactor systems that remove challenging dissolved gasoline components from contaminated groundwater.

These systems handle extremely high concentrations of gasoline constituents, reducing them to non-detectable levels. This is verified by laboratory analyses of water samples.

Little, if any, methyl tertiary butyl ether (MTBE), tertiary butyl alcohol (TBA), or other dissolved gasoline components are detected after treatment, allowing treated water to be reinjected into the subsurface, discharged to surface water, or sent to a municipal sewage system.

The bioreactor can be used to treat fuel oxygenates and petroleum hydrocarbons, and have been operated throughout the United States.


Cardno ERI’s services include environmental assessments, environmental field services, environmental site remediation, fluidized bed bioreactor remediation systems, environmental compliance, legal support, and lead and asbestos assessments.


Cardno ERI serves a wide variety of private, government and industry clients who need assistance with environmental monitoring and compliance, oil and gas projects, as well as dealing with hazardous substances and groundwater.

On a scale of 0 to 10 with 10 being high client satisfaction, Cardno ERI has achieved a 9.33 average client rating for overall performance.