Case Study

Montana Pole and Treating Plant Superfund Site

Tracking airborne dust, VOCs, and wind shifts that may impact site workers and communities downwind of remedial activities.

<p>Montana Pole and Treating Plant Superfund Site</p>

Project Details

Project

Montana pole and Treating Plant Superfund Site (EPA Region 8)

Location

United States

Date

2021-2023

Services

4x Aeroqual AQS 1 monitors, Aeroqual Cloud software

Measurements

PM10, VOCs, Wind

Sector

Remediation

After decades of cleanup activities, Tetra Tech oversaw the final stage of remediation

Tetra Tech, Inc., a leading high-end consulting and engineering service provider, is contracted to provide technical and advisory services in EPA Region 8 for the Superfund Technical Assessment and Response Team (START V). This includes the Montana Pole and Treating Plant Superfund site in Butte, Montana. The former plant treated wood for industrial use with a toxic mix of preservatives, including pentachlorophenol (PCP), dioxins, and polyaromatic hydrocarbons (PAHs), which had contaminated soil and groundwater. In 2020, after decades of cleanup activities, Tetra Tech oversaw the final stage of bioremediation for the remaining 25 acres.

Key issues of airborne dust and VOC vapors

The project involved creating a Corrective Action Management Unit (CAMU) to transfer, store, and cap soils contaminated with PCP, dioxins, and PAHs that did not meet cleanup levels. A key issue was airborne dust and VOC vapors impacting onsite workers and the local community. The DEQ required monitoring exposure levels according to Occupational Safety and Health Administration (OSHA) standards and the National Ambient Air Quality Standards (NAAQS). This was complicated by localized air quality impacts from mining operations and Interstate 15/90, which runs through the site.

Tetra Tech deployed several Aeroqual AQS 1 air monitors at the site perimeter to track real-time PM10, VOCs, and wind shifts. Using Aeroqual Cloud software, Tetra Tech accurately apportioned site contributions and used the exceedance alerts function to effectively deploy dust suppression strategies to protect worker health and the downwind community.

The key issue was airborne dust and VOC vapors impacting onsite workers and the local community.

The key issue was airborne dust and VOC vapors impacting onsite workers and the local community.

Four Aeroqual AQS monitors with Cloud software and wind were used for real-time alerts and apportioned site contributions.

Four Aeroqual AQS monitors with Cloud software and wind were used for real-time alerts and apportioned site contributions.

Project outcome

By implementing Aeroqual’s solution, Tetra Tech reduced the air monitoring and mitigation costs by over 50% while ensuring negligible community and worker health impacts. The DEQ now securely manages the completed CAMU as the land is prepared for commercial and recreational purposes.

Colin McCoy of Tetra Tech summarized the project, stating, “This real-time monitoring system was a win-win-win for us, the client, and the community.”

Aeroqual

“The highlight for us was getting real-time updates from the Aeroqual software whenever there was an exceedance. That saved us time, energy, and expense – over 50% less than we would normally spend.”

Colin McCoy

Operations Manager, Tetra Tech, Inc.

Related products

About

Tetra Tech is a global provider of high-end consulting, leading with science to create a more sustainable future. Their vision is to change lives through science, technology, and innovation. Their goal is to improve the lives of 1 billion people around the world by 2030 by helping to create more resilient and sustainable communities.

Equipment partner, Specto Technology provides unique, powerful hardware and software for wireless Geotechnical, Structural and Environmental monitoring. We believe that by sourcing the world’s most advanced technology, we can solve even the most pervasive monitoring problems to make your life easier and save money.

Aeroqual develops integrated monitoring and software systems underpinned by industry-leading sensor technology to support environmental, health, and safety professionals in protecting people and the planet from the impact of air pollution. That’s why governments, industry, researchers, and consultants trust Aeroqual to deliver actionable data for their air quality monitoring projects.

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