PPSA Rebuttal time – due 1/28

December 27th, 2019

An odd notice came out today — an extension of the Power Plant Siting Act Annual Hearing comment period, “due to late-filed materials…”

Late filed materials??? Whatever could that be… SNORT!

Naaaah, more likely than not it’s the Comments I’ve filed in all the related wind dockets, plus the PPSA dockets, regarding “ground factor” an inappropriate use of anything but 0.0 as a ground factor:

That’s all about the many wind projects that are improperly using 0.5 and 0.7 ground factor. 0.0 is the only ground factor because the turbine is elevated, and from the source to the “receptor” it is a DIRECT hit! It’s really not hard to understand.

There are so many projects, ALL of the wind projects listed in this year’s Commerce-EERA handout for the PPSA:

These projects were all permitted using bogus noise modeling with GIGO input assumption of 0.5 or even 0.7 for ground factor!!! REALLY! These:

And these:

Guess somebody is wanting time to rebut! May it means we need a contested case, eh?!?! SNORT!

But then, even developer’s expert Mike Hankard agrees that 0.5 is not appropriate for an elevated source like a wind turbine:

It’ll be interesting to see what they have to say.

To look at the PPSA Annual Hearing docket go HERE and enter docket 19-18, using 19 (year number)- 18 (docket number).


That’s an eagle who’d been feasting on the carcass in the foreground as I drove across 110th in Freeborn County. There’s a nest off to the right (west) a bit that the Freeborn Wind developers and Dept. of Commerce don’t want to acknowledge. Wind projects are supposed to be a ways from eagle nests and foraging grounds.

A CNN article today raised this issue today, near the 2nd anniversary of a tRump administration “clarification” that stated that the Migratory Bird Treaty Act does not prohibit incidental takes.

From that CNN post:

According to emails obtained by the Times, when the Michigan Department of Natural resources emailed the U.S Fish & Wildlife Service seeking clarification if it could cut down trees, they were told “The recent M -Opinion also removes the prohibition to removing trees with active nests as long as the intent of the action is the cutting of the trees (in this case for timber harvest).” The agency did lay out potential ways to limit the damage done to the birds and nests, but noted those actions were “strictly voluntary.”

So it looks like taking down trees with nests in them would be OK for right-of-way clearing, or removing “hazard trees” by wind project?

Wind and transmission projects in this area often, if not always, have required eagle take permits (how many Decorah eagles died due to transmission lines? Four, I think!). But with the tRump administration “deconstructing the administrative state” at every turn, well, guess what was issued? Open season on migratory birds. It’s the 2 year anniversary of removal of protections:

From this memo

For the reasons explained below, this Memorandum finds that, consistent with the text, history, and purpose of the MBTA, the
statute’s prohibitions on pursuing, hunting, taking, capturing, killing, or attempting to do the same apply only to affirmative actions that have as their purpose the taking or killing of migratory birds, their nests, or their eggs.

Yes, you heard that right, as of December 22, 2017, federal policy, interpretation of the Migratory Bird Treaty Act, requires an take permit only for those activities that have the PURPOSE of “taking” a bird covered under the Act. So we won’t be seeing take permits required for wind and transmission projects.

And yet despite that policy turn around, he says things like this last week at “Turning Point.” He probably doesn’t even know that incidental takes are not an issue for wind projects:

So they make these things and then they put them up.  And if you own a house within vision of some of these monsters, your house is worth 50 percent of the price.  They’re noisy.  They kill the birds.  You want to see a bird graveyard?  You just go.  Take a look.  A bird graveyard.  Go under a windmill someday.  You’ll see more birds than you’ve ever seen ever in your life.  (Laughter.)

You know, in California, they were killing the bald eagle.  If you shoot a bald eagle, they want to put you in jail for 10 years.  A windmill will kill many bald eagles.  It’s true.

And you know what?  After a certain number, they make you turn the windmill off.  That’s true, by the way.  This is — they make you turn it off after you — and yet, if you killed one they put you in jail.  That’s okay.  But why is it okay for these windmills to destroy the bird population?  And that’s what they’re doing.

But FYI, bird takes have dropped dramatically in technology changes since the days of the Altamont Pass small turbine bird blenderizers. With larger, slower blades, spaced further apart fewer birds die. But some do! Particularly an issue if turbines are installed in migratory pathways, or foraging areas. Hence the need for a take permit, for siting away from bird areas, an attempt to put a limit on kills. That bird kills have been lowered doesn’t mean there’s reason to eliminate the take permits, no reason to eliminate prohibitions. WHY?

This is really important! I learned, after perusing the PPSA handout from Commerce, that none of the wind projects permitted in 2019, and none of the wind projects currently in the permitting process, are using the proper ground factor of 0.0 for noise modeling. WHAT?

So I put this comment together and filed it:

Needless to say, the PUC had something to say about that… they extended the comment period for the PPSA Annual Hearing!

PPSA Comments of Overland

December 6th, 2019

I see I forgot to post my Power Plant Siting Act Annual Hearing comments!!! How did that happen?

Why “Ground Factor” Matters

November 17th, 2019

Minn. R. 7030.0400 is the MPCA’s noise rule, setting standards for industrial noise. It was developed to limit industrial noise, from a noise source on the ground to a “receptor” on the ground. ISO 9613-2 was also developed to measure ground based noise reaching a ground based receptor.

A primary input is the “ground factor” set to address conditions on the ground, the ground effect, between the noise source and the receptor:

While there may be some reflected sound reaching the “receptor” (that is such an obnoxious term for people!), the sound from a wind turbine with a hub height of 300 feet or more! That’s a direct path to the “receptor.” The ground, grasses, corn, trees, buildings, do not get in the way.

The ground factor to be used for wind turbines is ZERO.

Dr. Schomer stated this clearly and thoroughly in the Highland Wind docket in Wisconsin (PSC Docket 2535-CE-100).

The use 0.0 of ground factor for wind is standard practice, and that a 0.5 ground factor is NOT appropriate for wind because it’s elevated. This was inadvertently confirmed by Applicant’s Mike Hankard in the Badger Hollow solar docket, also in Wisconsin (PSC Docket 9697-CE-100):

Who cares? Well, it’s bad enough that in that WI PSC Highland Wind docket, when the applicants couldn’t comply with the state’s wind noise limit, they redid their noise “study” using the inappropriate ground factor of 0.5 to give them more compliant numbers — they moved the goal posts, garbage in, garbage out. They think they can do that in Minnesota too, and are trying oh so hard in the Freeborn Wind docket (PUC Docket 17-410).

Last September, 2018 that is, Freeborn Wind did a deal with Commerce, admitted to in its “Request for Clarification/Reconsideration” pleading:

Freeborn Wind requests the Commission clarify its Site Permit to adopt Section 7.4, as proposed by Freeborn Wind and agreed to by the Department and MPCA, in place of the current Sections 7.4.1 and 7.4.2, to both ensure consistency with the Order and avoid ambiguity in permit compliance.

Freeborn Wind’s September 19, 2018, Late-Filed proposal for Special Conditions Related to Noise outlines the agreement reached between Freeborn Wind, the Department and the MPCA on this issue. (fn. citing Late Filed—Proposed Special Conditions Related to Noise (Sept. 19, 2018) (eDocket No. 20189-146486-01).

In this deal, they put language in the permit that was a fundamental shift in noise monitoring, one for which there is no justification under the noise modeling standards, whether state or ISO 9613-2 — that of using a 0.5 ground factor.

The day before the Commission’s meeting, they filed for a “Special Condition,” and oh, was it special:

At the meeting, they presented a chart with made up numbers on it, not supported by any noise study:

This chart was shown for a few seconds at most, it was not provided in the “Late Filing” above, and there were no copies for parties or the public. Did Commissioners get a copy? Who knows…

The Commission then granted the site permit!!! There were a few rounds before we got to where we are today, with Xcel Energy acquiring the project, and with a new site plan, bigger turbines, and some specific site permit amendments. In its permit amendment application, Xcel Energy is now the owner of Freeborn Wind, and Xcel wants to use larger Vestas V120 turbines rather than the V116.

From testimony in the original Freeborn Wind hearing, and in an Affidavit submitted by Commerce-EERA’s Davis

7.         It is generally understood that turbine noise output increases with higher blade tip speeds… 
Aff. of Davis, EERA Motion[1], 20181-139379-01.[2]

In its permit amendment application, Xcel Energy is now the owner of Freeborn Wind, and Xcel wants to use larger turbines. In so doing, they have filed a noise study, Attachment E below, utilizing that 0.5 ground factor. Xcel’s claim is that they’re using a 0.5 ground factor because the permit specifies that:

THIS XCEL FILING IS THE FIRST NOISE STUDY IN THE FREEBORN WIND RECORD TO UTILIZE A 0.5 GROUND FACTOR.

THIS XCEL FILING IS THE FIRST NOISE STUDY IN THE FREEBORN WIND RECORD FOLLOWING THE ALJ’s RECOMMENDATION OF DENIAL:

There’s a 3 dB(A) margin of error – even using Hankard’s numbers, look at the yellow lines right up against the homes, and look at the blue 50 dB(A) lines and how many homes are inside of those lines:

Turbine noise at the hub for the V120s can be maximum of 110.5 dB(A), and serrated edges provide an option to reduce noise (which Xcel says it plans on using for some turbines), per the Vestas spec sheet:

Compliance? Modeling with the improper 0.5 ground factor doesn’t come close to demonstrating compliance, instead it demonstrates a high probability of non-compliance. It demonstrates that using the proper ground factor for wind, it won’t do the modeling, likely (assuredly) because the project cannot comply. Freeborn Wind could not demonstrate that it could comply with state noise standards as originally designed with the smaller wind turbines and the proper modeling ground factor, and now Xcel Energy wants to use larger turbines. Larger turbines are noisier… once more with feeling:

7.         It is generally understood that turbine noise output increases with higher blade tip speeds… 

And now we see, hot off the press, the Plum Creek wind project (PUC Docket WS-18-700), proposed by Geronimo

Vestas 150 and 162 turbines, 5.6 MW each! The noise for the V150 is a maximum of 104.9 dB(A), and for the V162 is a maximum of 104.9 dB(A), with “sound optimized modes available.” That’s in the brochure:

They have provided a noise study, BUT, much is NOT PUBLIC:

And I wonder why… well, it says that they’re not using a ground factor of 0.0. Look at p. 48 of the sound study above, deep breathe and take a peek:

THEY’RE USING A GROUND FACTOR OF 0.7!

Really…

FALSE!!!

They say it again on p. 62, elsewhere too:

HOW STUPID DO THEY THINK WE ARE?

HOW STUPID DO THEY THINK COMMERCE-EERA IS? …oh… nevermind…

Ayway, here are the sound study maps based on that bogus 0.7 ground factor – look how many homes are affected:

Geronimo gets the gong:

The applicants know exactly what they’re doing.

At least twice in the Freeborn record I have asked whether the Commissioners understand “0.5 ground factor” and “0.0 ground factor” and have been vigorously assured that yes, they do understand. And Commerce-EERA staff? You’re responsible for doing the footwork on these siting applications. Do you understand?

If they do not understand, or misunderstand, they’ve got some learnin’ and edumacation to do. If they DO understand, and are approving site permits knowing that the modeling is off, that ground factor is misused, they’re complicit. They’re knowingly afflicting those who have to live with the noise sound levels that exceed Minnesota state standards.

As we saw in Bent Tree, where the noise standard compliance is in question, it is Commerce’s job to do the noise monitoring and deal with the problem. Once a turbine is up, there aren’t many options other than “shut down the turbines” or “buy out the landowners.” How many landowner buy-outs do you think we need before it’s admitted there’s a problem? Why is it so hard to develop responsible, precautionary, and respectful siting? Why is there resistance? The costs of their failure to do so are… well… we may see exactly what those costs are.

Commissioners and Commerce staff, make sure you know how the state noise standard and ISO 9613-2 was designed, how it is to be used, and what ground factor means.

If you know what it means, and are siting turbines using 0.5 and 0.7, you are responsible.