South St. Paul Community and Sanimax

Sanimax South St. Paul: Fall 2026 Update

Improving our community cohabitation remains one of Sanimax’s highest priorities. Over the past year, we have worked with outside experts in air quality, olfactory science, and control technology to better understand how our operations interact with our surrounding environment. These efforts are undertaken along with the participation of the City of South St. Paul. Our goal is lasting technical improvement that makes the biggest difference for our neighbors. In June 2026, Sanimax presented this approach to the South St. Paul City Council. You can watch the presentation here, beginning at timestamp 1:03.

Progress to Date
The study has three phases:
1. Identify the sources and compounds associated with our operations which may be contributing to community impacts.
2. Establish baseline conditions and test control improvements.
3. Use the results to guide further operational improvements and long-term investment.

Phase 1 sampling took place in April 2026, and the results were shared with the City in August. The findings helped us better understand the areas of our operations with the greatest potential for improved community impact and informed upgrades to scrubber controls, monitoring systems, treatment chemistry, and supporting infrastructure.

Phase 2 field testing was completed in September 2026, and analysis of the results is underway. This phase built upon what we learned in Phase 1 and tested control improvements under different operating conditions. Because the testing involved temporary changes to equipment and operating conditions, it may have contributed to isolated community impact episodes during this period. We are using what we learned to further tune and evaluate the new systems. Once the analysis is complete, we will share the results with the City of South St. Paul

What Comes Next
Phase 3 will use the study results to further refine current improvements and help identify longer-term investments with the greatest potential for meaningful community improvement. Some of these projects may require additional engineering and implementation time. This approach helps ensure our efforts are guided by the study findings and focused on where they can have the greatest impact.

Our Commitment
Sanimax has been part of the South St. Paul community since 1958. We recognize that continued improvement is what matters most to our neighbors, and we remain committed to a disciplined, science-based approach focused on identifying opportunities, implementing effective solutions, and communicating with stakeholders.

Questions or feedback can be submitted to SSP-Community@sanimax.com.