[PeterPrinciple]

New wind farm agreements include provisions for decommissioning and return of the site to previous condition.

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that sounds good but the reality is the once the money is gone and it is in bankruptcy, it isn't going to happen. the contracts on the ones put on farm land state they will take the foundations down to 16 inches below ground level. I tell my clients, don't depend on it.................

[tomkat]

And they get away with 16" ??

Frost line around here is waaay deeper than that .. you're asking for trouble setting fence posts shallower than 32" !

(but if you meant dismantling their junk/footers down to 16", then nevermind)