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Tom Shields, director of transmission for wind power developer Iberdrola Renewables, talks about the proposed Stiles Brook Wind Project at an April 5 meeting in Grafton.


Wind studies met with skepticism in Grafton

Iberdrola says studies show proposed project would meet state permitting standards, but some residents say they’re not convinced

GRAFTON—A developer says preliminary environmental studies — including detailed assessments of noise and visual impacts — have shown no “red flags” for the proposed 28-turbine, 96.6-megawatt Stiles Brook Wind Project in Windham County.

But no scientific studies are needed to gauge the level of skepticism some residents feel about the project.

Even as wind developer Iberdrola Renewables and its consultants presented new findings inside the crowded Grafton Elementary School gym on April 5, some said they believed little of what they were hearing.

“I think it’s unsurprising that the goal is to make it seem as benign as possible,” said Skip Lisle, a nearby resident and a Grafton Selectboard member who wore a “stop wind scam” pin.

Iberdrola is working to finalize its Stiles Brook plans later this year. As the meeting wound down, corporate spokesman Art Sasse said the company is open to hosting more workshops and conducting further studies — but only up to a point.

“Part of what we’re doing with this process is trying to listen to the community,” Sasse said. “The folks that have legitimate concerns — who aren’t here just to validate their fears, but to validate facts — those are the folks we want to work with.”

Potentially state’s largest turbine site

The Stiles Brook project would be Windham County’s first turbine site and Vermont’s biggest. Iberdrola wants to place 20 turbines in the town of Windham and eight in Grafton, but all would be located on Stiles Brook Forest land owned by New Hampshire-based Meadowsend Timberlands Ltd.

Supporters say the project will boost renewable energy efforts in Vermont, and Meadowsend has said the turbines will help the company continue to maintain the 5,000-acre Stiles Brook tract as a “working forestland.”

Additionally, both towns could see a financial windfall from the project: When plans were unveiled last fall, Iberdrola estimated combined, annual payments of $1 million to Windham and Grafton.

But vehement opposition has sprung up. Some worry that the turbines — with the top blade tip rising 492 feet above the ground — will negatively impact their home values and their health while irrevocably damaging the ridge separating the two towns.

Iberdrola is eyeing construction at Stiles Brook starting in 2019, but the company has not filed for a state certificate of public good or for a connection to the power grid via ISO New England. The “technical workshop” meeting was scheduled to offer the latest results of environmental assessments.

Company offers computer models

Standing before an array of photographs and a large map at one end of the gym, Iberdrola consultants said they’ve used computer modeling and travels around the two towns to determine that the Stiles Brook turbines would not be widely visible.

Patrick Heaton, a Syracuse, N.Y.-based principal with Environmental Design & Research, said 62 percent of the landscape is shielded from the project by topography alone.

“Because of the topography in this area — the ridges — the potential visibility of this project is very limited relative to other projects,” Heaton said.

When forest cover is factored in, he added, projected turbine visibility decreases by an even greater degree.

“Our model extended out to 10 miles around this project,” Heaton said. “Less than 2 percent of that area is predicted as having views of the project.”

Nearby, another map showed potential noise impacts from the wind turbines. Mark Bastasch of Colorado-based consultant CH2M said the state sound threshold for permitting is 45 decibels, and his “site-specific sound model” shows that no homes would experience turbine sound exceeding that level.

In fact, his mapping showed most homes situated outside the 40-decibel range. To give a sense of perspective on those sound levels, Bastasch positioned a microphone nearby that was showing 70 decibels of noise at his booth.

At Stiles Brook, “it looks like we’re going to be within compliance of the Vermont standard, and that’s really what we’re focusing on,” Bastasch said.

Other topics covered at the April 5 workshop included stormwater and wetland impacts; engineering, construction and transmission issues; and a reiteration of municipal financial benefits from the Stiles Brook project. Among those roaming the room was Jeremy Turner, Meadowsend’s managing forester, who said he is satisfied with Iberdrola’s studies so far.

“Clearly, there’s a tremendous amount of work and research and science that’s occurring on the ground,” Turner said.

Turner added that Stiles Brook is a one of the best spots in the region for wind power “given the topography, given the location, given the size, given the single ownership — all these things that separate it and make it a good site.”

Noise-impact concerns

Many dispute that assessment, including anti-turbine activist Annette Smith, executive director of Danby-based Vermonters for a Clean Environment.

“How many lawyers and lobbyists does it take to sell a wind project?” Smith asked, nodding toward Iberdrola representatives milling around the Grafton gym.

Smith was particularly concerned about what she heard at the noise-impact booth. She noted that Bastasch has been affiliated with Iberdrola’s Hardscrabble Wind Power Project, where some neighbors have filed a lawsuit claiming damages from the turbines.

“This [noise] information that’s being put out here is highly disturbing to me, because it is not reflective of our real-world experiences in Vermont,” Smith said.

Smith also questioned why the Stiles Brook consultant wasn’t considering the potential impacts of low-frequency “infrasound” at the site. Some contend infrasound can damage the health of turbine neighbors, but an Iberdrola handout at the meeting said “multiple independent studies” have shown no such link.

From his perspective as a consultant, Bastasch said he is “not really aware of any public health agency coming out and establishing a criterion or a threshold [for infrasound] that we would need to focus on,” he said.

Lisle, who lives about 1.5 miles from the proposed turbines, said he’s concerned about infrasound as well as aesthetic impacts. He can see Iberdrola’s meteorological-testing towers at Stiles Brook, and he believes much larger turbines will be prominently visible from his home.

“It means the loss of hundreds of thousands of dollars in property value,” Lisle said.

‘Left with more concerns than before’

Liisa Kissel, a director of the turbine-opposition organization Grafton Woodlands Group, said she departed the meeting with unanswered questions about noise, aesthetics, stormwater, decommissioning, construction impact, and other issues.

“Overall, I was left with more concerns than before,” Kissel said.

The same could be said of former Windham County state Sen. Peter Galbraith, who has launched a gubernatorial run based in part on his opposition to new turbine projects in Vermont.

“You’re destroying the ecosystem for very little energy gain,” Galbraith said as he worked the crowd. “It doesn’t make sense.”

It remains to be seen whether a majority of Windham and Grafton residents feel that way. Iberdrola administrators have said they will abide by the results of community votes, expected later in 2016.

“I think we’re feeling very confident that the project is on the right path,” Sasse said. “We’re feeling very good about an opportunity to work with the community to continue to tweak and help the project plan be the best possible plan for the community and for the resource itself.”

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Originally published in The Commons issue #352 (Wednesday, April 13, 2016). This story appeared on page A1.

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