How long for undisturbed soil?

[John Kay]

How long must soil be undisturbed before it's considered "undisturbed".

I'm planning on digging a tower base hole next spring. My ideal location in the
yard is near the area of my now abandoned septic tank.  This area was dug up
last November.  Will the soil in this area beconsidered undisturbed?

Thanks in advance.

John (WV9T)

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