Noise Pollution

Summary

A hyperscale data center operates continuously — 24 hours a day, 7 days a week, 365 days a year. The cooling infrastructure required to prevent server overheating produces constant industrial noise from chillers, cooling tower fans, air handling units, and transformers. At the facility boundary, noise levels typically range from 70 to 85+ dBA. For the 2,400 families in Arden and students at Saddle View Elementary, this means living and learning next to a permanent source of industrial noise.

How Loud Is 80+ dBA?

Sound levels are measured in decibels (dBA). For context:

30 dBA: Quiet bedroom at night
40 dBA: Library, quiet residential area
50 dBA: Moderate rainfall
60 dBA: Normal conversation
70 dBA: Vacuum cleaner, busy traffic
80 dBA: Garbage disposal, food blender
85 dBA: Heavy truck at 50 feet — prolonged exposure causes hearing damage

At 80+ dBA, the noise from a data center's cooling systems is comparable to standing next to a busy highway. The critical difference is that highway noise fluctuates and has quiet periods. Data center noise is constant and unrelenting.

Health Effects of Chronic Noise

The World Health Organization (WHO) identifies environmental noise as the second-largest environmental cause of health problems, after air pollution. Their guidelines recommend:

Nighttime noise should not exceed 40 dBA to prevent sleep disturbance
Daytime noise should not exceed 55 dBA in residential areas
Chronic exposure above these levels is associated with documented health effects

Research has established that chronic noise exposure causes:

Sleep disruption: Difficulty falling asleep, frequent awakenings, and reduced sleep quality, even when noise levels do not fully wake the sleeper
Cardiovascular disease: A 2018 study in the Journal of the American College of Cardiology found that chronic noise exposure increases the risk of heart attack, stroke, and heart failure
Stress and mental health: Elevated cortisol levels, anxiety, irritability, and depression
Cognitive impairment in children: The RANCH study (Road Traffic and Aircraft Noise Exposure and Children's Cognition and Health) found that chronic noise exposure impairs reading comprehension and long-term memory in school-age children
Hearing damage: Prolonged exposure to noise above 85 dBA causes permanent hearing loss

Impact on Children and Schools

Saddle View Elementary School is approximately 1,500 feet from the proposed data center. Research consistently shows that classroom noise levels above 35 dBA impair learning:

Students in noisy environments score lower on standardized tests
Teachers in high-noise schools report greater vocal strain and higher turnover
Children with learning disabilities and attention disorders are disproportionately affected

The constant hum of industrial cooling equipment would be audible inside classrooms, on playgrounds, and during outdoor activities — the very features that make Arden's school attractive to families.

Property and Quality of Life

Beyond health effects, chronic industrial noise fundamentally changes the character of a residential neighborhood. Outdoor activities — gardening, barbecues, children playing, evening walks — become less enjoyable when accompanied by constant mechanical noise. The "agrihood" lifestyle that Arden was designed around depends on the ability to enjoy outdoor spaces in relative quiet.

Real estate research consistently shows that proximity to industrial noise sources reduces property values by 5-15%, as buyers factor in the diminished quality of life.

Inadequate Noise Mitigation

Data center operators often propose noise mitigation measures such as sound walls, equipment enclosures, and setback distances. While these can reduce noise levels, they rarely eliminate the problem:

Sound walls lose effectiveness at distances beyond a few hundred feet and do not block low-frequency noise
Cooling equipment must ventilate to the open air, limiting enclosure options
The sheer scale of a 3.69 million square foot facility means noise sources are distributed across the entire site

What You Can Do

No family should have to choose between their home and their health. Sign the petition to demand proper noise impact assessments and attend the April 23, 2026 County Commission hearing.