DNR raises concerns over Hermantown data center review

The Minnesota Department of Natural Resources (DNR) is expressing concerns over the environmental review process for a proposed Google data center in Hermantown, just outside Duluth. Randall Doneen, Deputy Director of DNR Ecological and Water Resources, stated that their concerns are not about the data center itself, but the proposal's size and location, which could impact wetlands, surface water, and groundwater interactions.

Specifically, the DNR is worried about a nearby trout stream that relies on cold groundwater resources. Large developments, such as the proposed data center, can alter this interaction, potentially harming the stream. The DNR identified this as an unresolved issue in the environmental review document and has communicated their concerns to the City of Hermantown and its consultants, emphasizing the city's responsibility to address these impacts.

Doneen clarified that the DNR's concerns primarily focus on stormwater runoff and its effect on groundwater-surface water interaction, not the facility's internal water usage for cooling or drinking, which would be subject to wastewater discharge disposal permits from the Minnesota Pollution Control Agency. He also noted that while the DNR is not the decider of the review's accuracy, they are neutral and aim to ensure compliance with state laws, highlighting a misplaced authority in the environmental document that incorrectly suggested the DNR was responsible for mitigation. The City of Hermantown's city council is expected to consider an updated Alternative Urban Areawide Review (AUR) this fall.