Environmental Services in Rochester, MN

Karst limestone beneath parts of southeastern Minnesota creates preferential migration pathways—fractures and solution channels—that can move contaminants faster and in less predictable directions than granular soils alone. We account for this by reviewing available bedrock mapping and, where depth to bedrock is shallow, recommending borings or monitoring well placement that addresses both the overburden and potential bedrock exposure, consistent with ASTM E1903 investigation objectives.

Yes. Our Minneapolis hub dispatches to Rochester on a scheduled and project-based basis, and we plan environmental monitoring around your earthwork schedule, including cold-weather operations. Winter soil sampling may require mechanical boring equipment to penetrate frost, which we coordinate in advance. Notify us of schedule shifts as early as possible so we can confirm technician availability and adjust any sampling or field screening protocols accordingly.

During earthwork, a technician observes soil conditions for visual and olfactory indicators of contamination, conducts field screening with a photoionization detector (PID) where volatile compounds are a concern, logs observations, and documents any suspect materials encountered. If conditions change materially from what the Phase II characterized, we collect confirmation samples. Field logs and any analytical results are compiled into a summary report suitable for project files or agency submission.

Field work in Rochester is dispatched through the Minneapolis, MN regional hub, about 77 miles away. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Rochester projects.

Field sampling and testing in Rochester are performed by our ACI- and NICET-certified technicians. Environmental engineering and professional services are delivered with professionals licensed in Minnesota, coordinated under one proposal.