Entries in wind turbine noise (103)

10/2/09 Three stories about one wind farm: What's going on in our neighbor state of Michigan?

Three views on the same wind farm: Which tells the truth?

Or could there be several truths at once?

The BPWI Research Nerd has found that no two homes in any wind farm are the same. Each has its own relationship with the terrain, wind direction, and turbine location both in distance from the home and direction from the home.

This is one of the problems with uniform siting standards. The issue of siting wind turbines near homes is more complicated than anyone anticipated.

Click below to watch a news clip about the 47 wind turbinesof Ulby, Michigan.

This report give the impression that there are no noise problems in that wind farm.

But this news report tells a different story:

Wind Park Complaints Considered

By Kate Hessling

Huron Daily Tribune

After receiving another letter from residents who say wind turbines near their Ubly-area home are creating noise disturbances, county officials said they still are in the process of developing a way to respond to complaints received following a wind park’s construction.

“We thought it would be, as we were told from the beginning of the turbine project, ‘no louder than a clothes dryer,’” reads a letter David and Marilyn Peplinski sent to Huron County officials May 15. “Now we realize that no one wants to stand right next to a running clothes dryer 24 hours a day. This is the reality of it.”

The Peplinskis’ letter states while the audible noise level coming from the park has slightly improved with the spring thaw, the sound resonance has not.

“Our family’s ability to get good nights’ sleep is dismal, to say the least,” the letter reads. “The feeling we get from the spinning turbines is not only heard, but felt in our bodies as well.”

The letter notes the family has never had sleep issues in the past.

“Now, on many evenings, it takes an effort for several of our family members to fall asleep. Then, our sleep is being disturbed many times throughout the night,” the letter states.

Marilyn and David Peplinski’s letter describes the feeling their bodies experience from low frequency sound waves created by nearby turbines as “like when a heavy truck travels by your home, and you can feel the rumble, except that this is a constant rumbling feeling.”

“If you have ever felt a cement truck while the drum is mixing, or the sound energy given off of a large drum when tapped, this is the best way we can describe the feeling we are experiencing,” the May 15 letter states.

The Peplinskis’ letter includes seven questions the couple felt need to be addressed by Huron County officials and John Deere Wind Energy. The questions, which are listed in the breakout box included with this article, include whether Michigan Wind 1 is in compliance with the county ordinance’s noise level maximum and what kind of monitoring method is being used to ensure the noise level is not exceeded.

Huron County Commissioner Dave Peruski, who represents the Ubly area, said he is planning to attend this evening’s Huron County Planning Commission meeting to see what can be done to answer the questions posed in the Peplinskis’ letter and avoid the same problems cropping up in the future as new developments are built in the area.

He said he would like to see a group come together that’s comprised of representatives from the county board of commissioners, planning commission, building and zoning office and John Deere Wind Energy, to develop a complaint resolution procedure.

“That’s the approach I think we need to take,” Peruski said.

Commissioner: ‘We have to take them seriously’

Peruski said he’s met with the Peplinskis and believes their complaints are not without merit.

“We have to take them seriously,” he said, noting there are varying degrees of the problems the Peplinskis are facing that others in the county could face in the future as future wind developments are created. It’s important, Peruski said, to ensure the county’s zoning ordinance is crafted in such a way to avoid these problems from being repeated elsewhere.

David Peplinski said it is his goal these issues are considered in the siting and development of future farms in Huron County, because he wouldn’t wish the problems he and his family have experienced on anyone else.

He stressed he strongly supports alternative renewable energy projects, but feels the effects these projects will have on adjoining property owners need to be taken into consideration in the siting and zoning process.

Also, David Peplinski said, he is not a complainer and his family never wanted to be in the spotlight. Per procedure, his letter became public as soon as it was sent to the Huron County Board of Commissioners.

David Peplinski noted it wasn’t easy for him or his wife to submit the letter, particularly because they don’t want to hurt others in the community, because those living in the area are the family’s neighbors and friends.

As a result, he said he would also like to see there be a complaint mechanism created where when someone is having an issue, it can be handled in a manner other than submitting a letter to the board that will become public.

Regarding the response David Peplinski said he’s received, he noted both the county and John Deere Wind Energy have been very polite and quick in responding to his concerns.

Noise complaints made in March

Huron County commissioners received two letters in March from residents who said wind turbines near their Ubly area homes are creating noise disturbances.

Shortly after the letters were received, commissioners discussed how to address complaints received from residents after a wind development has been constructed and begins producing power.

The letters, which were submitted by Ubly residents Randy and Angela Weber and Dennis and Darcy Mausolf, reported problems of extreme noise increases and outside noise that resembles a distant jet with an intermittent whoosh sound.

“Inside our house, we have a low hum vibration that sounds like a truck running outside. This noise makes sleep difficult,” reads the letter the Mausolf’s wrote March 10.

That letter, in addition to the one written by the Webers, was obtained by the Tribune in March via a Freedom of Information Act request.

At the time county officials were discussing how to address the complaints, Huron County Building and Zoning Director Russ Lundberg noted the issue of measuring sound emitted from the turbines is more complex than just taking out a decibel reader to measure whether noise levels at/near Michigan Wind 1 exceed limits set in the county’s zoning ordinance.

Sound is measured by using units of decibels (dB), and A-weighting which compensates for the sensitivity of human hearing. A-weighted sound levels are measured by dB(A).

The county’s zoning ordinance’s primary noise standard states noise generated by an operating wind turbine can not exceed 50 dB(A) at all nearby sensitive receptor locations, which includes residents. The ordinance includes a second standard of ambient +5 dB(A), meaning at times sounds created by a wind turbine may cause total ambient noise to exceed 50 dB(A).

In March, Lundberg explained at some locations, particularly during late and early hours, operations of a wind turbine facility significantly increase ambient noise levels. For example, on a night with low wind speeds and little traffic and other outside activity, there may be an ambient rating of 20 dB(A). That rating may double when turbines are in operation, however, the overall limit of 50 dB(A) is not exceeded, though the noise of the wind park is noticeable.

In the daytime, particularly when there’s increased wind speeds, there’s other ambient noise — such as leaves rustling in the wind, cars on the road, tractors in fields, etc. — the sounds of a turbine in operation may not even be noticeable because it’s drowned out by the other ambient noise.

With this in mind, the issue is how to determine whether the 50 dB(A) levels are being exceeded and if so, whether it’s being exceeded by the actual turbines themselves or by a combination of the turbines and other existing ambient noise sources.

Because wind projects have to submit a noise study to prove a wind farm will not exceed the 50 dB(A) limit, the county’s assumption is it’s not the turbines themselves that are exceeding the 50 dB(A) level, Lundberg previously noted. But how to check this assumption is the question officials were mulling over in March.

That is because in order to check the wind park’s noise levels, the other ambient noises would have to be identified through a noise study.

Previously discussed avenues

During March’s discussion, it was noted the county has three possible options. First, the county could have John Deere Wind Energy conduct a wind study, Lundberg said. Another option for the county would be to go it alone, by purchasing the necessary decibel metering equipment and have Lundberg learn the noise consulting expertise needed to conduct a noise study.

The third option would be for the county to hire an independent noise consultant study to conduct a post-construction noise study, which would be paid for post-construction fees (of $400 per turbine) that already are built in the county’s ordinance to fund post-construction reviews.

The planning commission included those fees for post-construction matters so it would not take any money away from the county’s general fund if additional review is required after a wind park has been developed, Lundberg explained in March.

During March’s discussion, it appeared the board favored pursuing the first option that’s a teamwork approach with John Deere Wind Energy.

Since that meeting, Huron County Commissioner Kurt Damrow — who chairs the Legislative Committee, which has been charged with following up on this issue — has said the county planning commission more than likely will make an amendment to the county’s wind ordinance to include a section that deals with how to address complaints made after a wind park’s constructed.

“We just want to work with the planning commission to come up with a … thorough and specific procedure,” Damrow said.

He noted identifying and correcting any problems a wind farm may be causing will only benefit the wind park’s purchaser and developer. That is because the projects currently are under warranty and any repairs/replacements that need to be made will be covered by under warranty from the turbine’s manufacturer for the first year or two after the project’s been constructed, Damrow said.

Questions he said need to be addressed include what is a legitimate complaint, and what — if any — burden should be placed on the developer as far as proving the wind farm is in compliance with the zoning ordinance.

Another solution Damrow said has been proposed is increasing the county’s setback distance, which is the minimum distance a turbine can be placed to an existing structure, from 1,000 feet to 1,320 feet.

Damrow said this is a standard DTE Energy officials told him they would be on board with. He added existing wind farms will be grandfathered in at the current 1,000-foot setback.

Also, Damrow said the county’s discussed obtaining a meter to get an immediate readout of sound so the county could independently monitor sound levels.

Damrow said the county needs the business the wind industry has given the area, however, the well-being of the residents cannot be compromised if developers cannot meet the established wind ordinance in Huron County.

“They’ll have to do whatever it takes to make sure they meet the ordinance requirements,” Damrow said. “We don’t want any undue burden on our residents, and we’ll do everything we can to help everyone.”

The Questions

1. Does the county have the ability to monitor the county’s zoning ordinances on the noise level?

2. Has John Deere Wind Energy been in compliance with the noise level ordinance since they began operation?

3. How is John Deere Wind Energy going to maintain the turbine noise at or below the ordinance?

4. What method of documentation is going to be used to show compliance?

5. Has the noise level been above the ordinance maximum level?

6. What monitoring method is being used to ensure the noise level is not exceeded?

7. What is the county’s ordinance on inaudible low frequency noise waves?

By Kate Hessling

Huron Daily Tribune

4 June 2009

NOTE FROM THE BPWI RESEARCH NERD: Click on the image below to see another news story about the turbines of Ulby, Michigan. This one inclueds interviews with wind farm residents who are having trouble with turbine noise.

12/9/08 What they say about the word "Assume" and what that has to do with industrial turbine noise and the state of Wisconsin's 1000 foot setback : Part Two of Our Step by Step Look at the History and the Content of Town of Union's Large Wind Ordinance.

A is for "assume"

near the town of byron, fond du lac county, wisconsin, fall, 2008

"[Industrial wind turbine] noise, on which the ordinance is silent,

was assumed to be captured by the 1000 foot setback"

--Alex DePillis

From the Minutes of the November 4, 1999 Guidelines and Model Ordinance Ad Hoc Subcommittee meeting.

At the time, DePillis was a state worker employed by the Wisconsin Energy Bureau, Department of Administration.

He now works as a wind developer for EcoEnergy LLC

What are the results of this "assumption" about the 1000 foot setback?

Gerry Meyer carried mail in his community for 30 years.

He lives inside the Invenergy Forward Energy wind farm near the town of Byron in Wisconsin's Fond du Lac County. When the turbines went on line near his home in March of 2008, he was surprised by the amount of noise that they made. He began keeping a noise log. (The entire turbine noise log can be downloaded by clicking here)

Let's look at the noise log for September 1, 2008

6:20 AM Loud motor running or humming sound.

7:05 AM I’m hearing turbine #4 in the barn, shop, and at the computer.

[ Turbine #4 is less than 1600 feet from the house]

11:15 AM Wind SW Loud.

4:15 PM Turbine 4 and 6 are making loud jet flying over sounds, ripping the sky apart. It has been loud all day.

9:40 PM This is the loudest night in a long time.

I hear #4, 6, 73, 74a, 3a and and possibly more.

I can hear them at the computer in the front of the house and in the family room in the back of the house with the TV on.

Keep in mind turbine 6 is ¾ mile away. # 73 is 2480’ and 74a 5/8 mile away.

It is very sad our town officials and PSC have allowed this turbine project to affect the health of residents in this area and it will continue in other areas.

11:40 PM I hear turbine jet flying over sound while watching TV in our family room.

This assumption about wind turbine noise made by Alex DePillis and other members of the Model Ordinance Ad Hoc Subcommitee helped the state create guidelines which allowed Chicago-based wind developer Invenergy to site turbines as close as 1000 feet from unwilling participants homes in Fond du Lac and Dodge County.

The result?

Residents in Dodge and Fond du Lac are having trouble sleeping at night due to noise from industrial turbines, and when they want to sell their homes, no one seems interested in buying them.

This photo, taken December 8, 2008 is of a home near the town of Byron that has been on the market for a long time. The price has been reduced but still no offers.

Can you guess why?

Why would the state put so many residents at risk by allowing a committee to set guidelines based on an assumption that a 1000 foot setback would take care of noise problems?

Local governments who recognized the inadequacy of the state's guidelines for siting turbines have created large wind ordinances intended to protect the health and safety of residents. Within the last year, six Wisconsin townships have adopted ordinances with a 2640 foot setback. They didn't just pull that figure out of the air. And they didn't base it on an assumption. So what is it based on?

Here's what we learned from the findings section from the Town of Union's large wind ordinance regarding wind turbine noise.

The complete text of the findings and all documents used to support these findings are cited in the ordinance. (Download the entire Town of Union ordinance by clicking here)

This is just a summary:

The state's current wind turbine noise limit of 50dBA does not adequately protect residents from the adverse health effects associated with large wind turbine noise.

The town of Union limits large wind turbine noise to a maximum of 35dBA or 5dBA over ambient, whichever is lower, in order to protect residents from adverse health effects associated with large wind turbine noise based on the following findings:

Large wind turbines are significant sources of noise, which , if improperly sited, can negatively impact the health of residents, particularly in areas of low ambient noise levels.

Large wind turbines emit two types of noise-- 1) Aerodynamic noise from the blades passing through the air, which can generate broadband noise, tonal noise and low frequency noise; and 2) Mechanical noise from the interaction of the turbine components.

A dBA scale is commonly used to measure audible wind turbine noise.

Low frequency noise from large wind turbines is not adequately measured by the state's use of dBA weighting.

Noise is an annoyance that can negatively impact health, producing negative effects such as sleep disturbance and deprivation, stress, anxiety, and fatigue.

Large wind turbines create a noise annoyance that can hinder physical and mental healing and can cause adverse health effects associated with sleep disturbance and deprivation, psychological distress, stress, anxiety, depression, headaches, fatigue, tinnitus and hypertension.

Wind turbine noise can affect each person differently. Some people are unaffected by wind turbine noise, while others may develop adverse health effects from the same noise.

At low frequencies, wind turbine noise may not be heard but rather is felt as a vibration. Medical research reported complaints from people who felt the noise from large wind turbines, similar to symptoms that can be associated with vibroacoustic disease.

The risk for adverse health effects resulting from noise annoyance such as headaches, stress, anxiety, fatigue, depression, pain and stiffness, and decreased cognitive ability associated with sleep deprivation from wind turbine noise increases with increasing A-weighted sound pressures. According to wind turbine noise studies, few respondents were disturbed in their sleep by wind turbine noise at less than 35dBA. Respondents were increasingly disturbed in their sleep by wind turbine noise greater than 35dBA.

Wind turbine noise greater than 5dBA over ambient increases the risk for health effects because a change of 5dB is clearly noticeable.

Studies show prolonged exposure to wind turbine noise resulted in adverse health effects at sound levels below those from other sources of community noise, such as road traffic noise. Sound generated by wind turbines has particular characteristics and creates a different type of noise having different health impacts than compared to urban, industrial or commercial noise.

Living in a rural environment in comparison with a suburban area increases the risk of residents being impacted by noise from nearby large wind turbines because of the low ambient noise in rural environments. The International Standards Organization recommends community noise limits for rural areas be set at 35dBA during the day, 30 dBA during the evening, and 25dBA at night.

Eye-witnesses living near newly-constructed large wind turbines in the Town of Byron, Fond du Lac County, WI, testified at the public hearing held by the Town of Union Plan Commission that they currently experience adverse health effects from the wind turbine noise such as sleep deprivation and disturbance, headaches, nausea and dizziness. Th noise from the wind turbines in the Town of Byron is greater than 45dBA at their residences and can be heard inside of their houses and outside in their yards.

Two Plan Commissioners from the Town of Union visited the newly constructed wind turbines in the Town of Byron, Fond du Lac County, WI in June 2008 and confirmed the wind turbines were a significant source of noise. One described the quality and intensity of the noise as sounding like a jet airplane. The other spoke with residents, farmers and a sheriff's deputy in the area who all stated that the turbines were noisy. He also took sound measurements from the home of a resident with a turbine less than 1500 feet from his home. The sound measured between 57 to 67 dBA on June 6-7, 2008.

However, experiences vary. Two other plan commissioners visited wind turbine sites. One visited sites in Byron Township, Lincoln Township and Montfort and found that overall, people were satisfied with the turbines. Two issues noted by this Plan commissioner were tensions between landowners profiting from the wind turbines and those landowners who did not, and poor conditions of roads following the installation of the turbines.

The other commissioner visited wind farms in Iowa. He estimated that approximately 60% of the people he spoke with had positive opinions of the wind turbines and approximately 40% of the people he spoke with had negative opinions of wind turbines.

A fifth plan commission member went to a wind farm south of Rockford, IL. No one was available to talk so he walked around the area. It was a nice day, and windy. He noticed that the windows in the homes surrounding the site were all closed and no one was outside. He stated the noise was similar to a plane going overhead. He stood under a tower and did not feel any unease.

(For the complete text of the Town of Union's findings regarding Wind Turbine Noise Impacts, please download the complete ordinance by clicking here)

1/10/08 Who Ya Gonna Call?

telegram.jpgWhen something goes wrong with a 40 story turbine near your house......

Who do you call?

How quick do they come?

How long do you have to wait? 

 

Here's what residents are finding out in Pennsylvania. Click here to read the original source of this article.

 Despite efforts to repair wind turbines in Juniata Township, Blair County, they still are generating unbearable noise to some residents.

Tempers flared at a Juniata Township supervisors meeting Monday night as residents voiced their frustrations.

Supervisors agreed to contract Paul Heishman, a professional engineer, to conduct an independent noise study by Jan. 30, when all repairs are expected to be complete.

Babcock and Brown, owners and operators of the turbines in the township and neighboring municipalities, have repaired half of the turbines and will repair the rest by Jan. 30.

‘‘There was some tape that was put on the trailing edge of the turbine blades. That tape was peeling off and causing a noise,” said Matt Dallas, public relations officer for Babcock and Brown. “Ironically, I think the tape is put on to make them quieter. They either used the wrong kind of glue or not enough was used, which is causing the noise.”

Gamesa built the turbines two years ago; in June, Babcock and Brown bought the wind farm that has four turbines in Juniata and several others in Greenfield and Portage townships.

The problem has not been fixed, said Jill and Todd Stull, who live near the turbines.

‘‘You know when you’re standing outside and you hear a plane coming about 30,000 feet overhead, then it goes off in the distance? It sounds like those planes are 5,000 feet above your house and circling and never land,” Jill Stull said.

‘‘It sounds like a jet. I know it’s going to make some noise, but a lot of times, it sounds like a jet,” resident Myrle Baum said.

According to a study conducted in December by Epsilon Associates, a company contracted by Babcock and Brown, the noise level of the repaired turbines was below the township ordinance noise level of 45 decibels.

However, Jill Stull said she borrowed a noise meter from Penn State University, which reads above 45 decibels on windy or cloudy days.

‘‘You got us a bad study. The information is garbled. It’s dishonest. We might as well put it in here,” resident Brian Baum said, pointing to the bathroom.

Once repairs on all the turbines are complete, Dallas said the noise problem should be fixed.

‘‘We really want to fix this and be a good neighbor. We’re in this for the long haul,” he said.

The Stulls said they could move, but they aren’t going to.

‘‘We’re not going anywhere. I just want them to be quiet. I’m not going to jump on the ‘I hate windmills’ bandwagon because I don’t,” Jill Stull said. ‘‘I’m just tired of nobody listening. My point is what is your peace of mind worth? I can’t play outside with my kids back at the pond in the woods because it gives me a headache.”

Sixteen more wind turbines are being built in Juniata Township as part of phase two of the Allegheny Ridge Wind Farm.

Dallas said the company has 20 other wind farms across the country and has not had a noise issue elsewhere.

By Kristy MacKaben, For the Mirror

Altoona Mirror