NOISE Pollution
Ordinance Language
Johnson County Iowa
7. Noise. The one- (1) hour average noise generated from Data Center operations, including, but not limited to, computing, cooling, and energy storage equipment, shall not exceed the following noise levels as measured at the property line:
| Zoning District of Receiving Property | 7:00 am - 9:59 pm | 10:00 pm - 6:59 am |
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| A, AR, SF, R, RM, RC, RMH | 60 dBA | 50 dBA |
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| C, CH, Ag-T, C-Ag | 65 dBA | 65 dBA |
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| ML, MH, RR, SWDRR, RE, ERP, P | 70 dBA | 70 dBA |
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The applicant shall provide Operating Sound Pressure Level measurements from a reasonable number of sampled locations at the perimeter of comparable data center operations to demonstrate compliance with this standard at the time of permitting.
To document decibel level if there is a complaint on an operational system, at the discretion of the Zoning Administrator, the owner shall commission a report providing Operating Sound Pressure Level measurements from a reasonable number of sampled locations at the property line to demonstrate compliance with this standard.