The MPCA filed a letter a couple days ago that clearly states that when measuring wind noise for permit compliance, AMBIENT NOISE IS TO BE INCLUDED.  They also admitted that this has not been properly interpreted for wind permit siting for past permits.

MPCA Letter from Frank Kohlasch_20189-146351-01

MPCA filed this in the Freeborn Wind docket, PUC docket 17-410, which is on the PUC’s agenda for September 20, 2018.  This will be interesting.

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