As mentioned in the Soil Resistivity and Area Testing report, All those analyzing grounding programs are largely concerned with the soil resistivity generally expressed in Ω-m. Soil resistivity measurements at several spots throughout the web-site, or as shut as is possible, are required because of the numerous variation of resistivity. https://gunnerdghhf.blogdeazar.com/32360788/a-review-of-soil-conductivity-testing-bd