Placer County has no ordinance specific to cryptocurrency or blockchain mining. A commercial mining operation is treated as a data center or industrial use, sited in the IN, INP, or BP zones and bound by the same Chapter 17 zoning, CEQA review, and Article 9.36 noise limits.
Unincorporated Placer County does not single out cryptocurrency or bitcoin mining anywhere in its code. Because a mining operation is a room of servers and cooling equipment, it is regulated the same as any data center: the Planning Director classifies it as an industrial use under Section 17.02.050, it is sited in the Industrial (IN), Industrial Park (INP), or Business Park (BP) district, and the use permit depends on its scale. Any discretionary approval triggers CEQA review, and cooling and generator noise must meet the countywide Article 9.36 limits of 55 dB day and 45 dB night at a receptor's property line. Small-scale hobby mining inside a home falls under ordinary residential and home-occupation rules, not industrial zoning.
No crypto-specific penalty exists. A commercial mining facility built outside an industrial zone, without a required use permit or CEQA clearance, or exceeding the Article 9.36 noise limits, faces county zoning and noise enforcement until it conforms.
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