Lewis County, WA Data Centers & Crypto Mining: Data Center Noise Limits (2026)

102(1) is Lewis County's noise and vibration standard for a data processing center sited in unincorporated Lewis County. Every piece of equipment associated with the center has to be enclosed within a building, and the building itself has to use sound-absorptive materials in its walls, ceilings and floors rather than relying only on distance to control noise. Where a data center shares a building with other tenants, the code requires vibration isolation technology in the walls or floors separating the data center use from the rest of the building, so server and cooling equipment vibration doesn't transmit into neighboring tenant space.

Outside the building, the standard adds a physical barrier: an acoustic barrier or wall at least eight feet tall has to run along all exterior property boundaries, except within 10 feet of a driveway, and that barrier itself has to be set back 10 feet from the abutting property line. The code also requires landscaping along the barrier, one shrub for every 10 horizontal feet of wall, so the barrier doesn't read as a blank industrial wall against a rural or small-town streetscape. 102(1) regulates data center noise entirely through enclosure, materials and barrier design rather than a decibel ceiling.