Is there a typical soil resistivity for Minneapolis–St. Paul?+
No citywide value can represent a parcel, substation, route, or facility. The Twin Cities region includes glacial till and outwash, river alluvium, lake deposits, and urban fill. Cold winters, frost, snowmelt, and summer drying require careful definition of the soil condition represented by each measurement. Field measurements must be tied to the actual array, location, spacing, orientation, and current condition.
Does Wenner electrode spacing equal test depth?+
No. Larger spacing generally samples a larger earth volume, but spacing is not an exact one-to-one depth. Layering, array geometry, site boundaries, and conductive features affect the apparent response.
What information is needed to scope a Minneapolis–St. Paul survey?+
Send the site plan, survey objective, grounding or corrosion design request, proposed stations and spacings, final grading information, candidate line corridors, utility-clearance responsibility, access rules, schedule, and required report format.
Can Calicore mobilize outside California?+
Yes. Calicore performs project-based Wenner field programs throughout the United States when the station count, spacing, access, schedule, and mobilization are practical.
