Industrial Noise: Chino vs Hesperia
How do industrial noise rules compare between Chino, CA and Hesperia, CA?
Chino and Hesperia have similar restriction levels.
Chino, CA
San Bernardino County
Industrial noise in Chino is governed primarily by Chino Municipal Code Chapter 9.40 (NOISE), §9.40.040 Exterior Noise Standards, with measurement methodology fixed in §9.40.020 (A-weighted, slow response, reference 20 micropascals). Per the city's General Plan Noise Element and CMC, the baseline exterior noise standard applied at the receiving property line is 65 dBA. Industrial sources (M-1 Light Industrial and M-2 General Industrial zones, including The Preserve specific-plan industrial areas, Chino Industrial Park along Edison Ave / Pine Ave, and the Auto Center) must not cause noise at adjoining residential property lines exceeding the residential standard (65 dBA daytime 7 a.m.–10 p.m. / 55 dBA nighttime 10 p.m.–7 a.m.). Mechanical and electrical equipment at industrial sites (cooling towers, compressors, dust collectors) is independently regulated under CMC §§9.40.030–9.40.060. Title 20 Zoning performance standards layer in vibration, glare, and noise limits enforced at the time of site-plan review.
View full Chino rules →Hesperia, CA
San Bernardino County
Industrial and commercial noise in Hesperia is regulated as a public nuisance under Hesperia Municipal Code Title 8, Chapter 8.32 (Public Nuisance), with land-use compatibility set by the General Plan Noise Element and Hesperia Code section 16.08.545 (Noise contour) for new development near industrial corridors.
View full Hesperia rules →Key Facts Comparison
| Fact | Chino | Hesperia |
|---|---|---|
| Primary code | Chino Municipal Code Chapter 9.40 NOISE — §§9.40.020 (measurement), 9.40.040 (exterior standards) | Hesperia Code Ch. 8.32 (Public Nuisance) |
| Baseline exterior standard | 65 dBA (residential receiving zone) | - |
| Day/night thresholds | Daytime 7 a.m.–10 p.m.; Nighttime 10 p.m.–7 a.m. | - |
| Equipment-specific limits | Mechanical/electrical equipment: CMC §§9.40.030–9.40.060 | - |
| Worker exposure | Cal/OSHA 8 CCR §5095 (separate from CMC) | - |
| Enforcement contact | Code Enforcement Division — (909) 334-3263 | - |
| Land-use anchor | - | Hesperia Code 16.08.545 (Noise contour) |
| Residential 'Normally Acceptable' | - | Up to ~60 dBA CNEL |
| State guideline source | - | Cal. OPR General Plan Guidelines, Appendix D |
| Enforcement | - | Code Enforcement + administrative citations |
Highlighted rows indicate differences between cities.
Chino FAQ
My house backs up to an industrial yard with a loud cooling tower running at 2 a.m. — what's the limit?
At a residential property line during nighttime hours (10 p.m.–7 a.m.), the CMC §9.40.040 standard is 55 dBA. File a complaint with Chino Code Enforcement (909-334-3263); they will measure with an ANSI Type 2 sound level meter per CMC §9.40.020 methodology. If exceedance is documented, the industrial operator receives a notice to comply followed by administrative citation.
Does Cal/OSHA take over industrial noise enforcement?
No — Cal/OSHA (8 CCR §5095) regulates worker exposure inside the facility (90 dBA 8-hour TWA action level, hearing-protection program at 85 dBA). External community noise impacts on neighbors remain a local-ordinance matter governed by CMC §9.40.
Hesperia FAQ
Is there a fixed dBA limit for a Hesperia warehouse at night?
Hesperia uses a nuisance test under Code Chapter 8.32 combined with General Plan Noise Element CNEL compatibility. New development near sensitive uses must demonstrate exterior residential exposure at or below the Normally Acceptable range (around 60 dBA CNEL) per the OPR matrix.
How do I report a factory or distribution yard for nighttime noise?
File a complaint with Hesperia Code Enforcement at (760) 947-1000. Sustained noise audible across the property line, particularly after 10 p.m., is treated as a public nuisance under Chapter 8.32 and is abatable.
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