Bostonia, CA Noise Ordinances: Decibel Limits (2026)
Key Facts
- Light industrial (M50-M54)
- 70 dBA anytime
- Heavy industrial (S82, M56, M58)
- 75 dBA anytime
- Extractive industries
- 75 dBA at property line
- Permit compliance
- MUP measures = compliance
- Impulsive noise
- Sec. 36.410, 82-90 dBA
Summary
In unincorporated Bostonia, San Diego County Code Table 36.404 caps industrial noise at 70 dBA anytime for light-industrial zones (M50, M52, M54) and 75 dBA anytime for heavy-industrial and extractive zones (S82, M56, M58). Extractive industries are held to 75 dBA at the property line regardless of zone.
The one-hour average sound level limit applicable to extractive industries, however, including but not limited to borrow pits and mines, shall be 75 decibels at the property line regardless of the zone in which the extractive industry is located.
Full Breakdown
San Diego County governs industrial noise in Bostonia. Under Table 36.404, light-industrial zones M50, M52, and M54 have a one-hour average limit of 70 dBA at any time, while heavy-industrial and extractive-use zones S82, M56, and M58 are limited to 75 dBA at any time, measured at the property line. Section 36.404(e) fixes a 75-dBA property-line limit for extractive industries such as borrow pits and mines regardless of the zone they sit in. Where a noise study and Major Use Permit conditions reduce impacts below significance (Section 36.404(b)), compliance with those measures counts as compliance. Impulsive industrial noise is separately capped by Section 36.410 (82-90 dBA depending on the receiving use).
Violations & Fines
Industrial noise above the Table 36.404 limits violates Section 36.404 and is enforced by County code enforcement, generally as a misdemeanor; Major Use Permit noise conditions are enforced through the permit.
Frequently Asked Questions
What is the industrial noise limit near Bostonia?
Do mines and quarries have a special limit?
Sources & Official References
Other rules in Bostonia
California rules heatmap·Compare Bostonia to another location·View the California noise ordinances overview
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Decibel Limits in Nearby Cities
How other cities in San Diego County handle decibel limits.