Industrial Noise: Marana vs Tucson
How do industrial noise rules compare between Marana, AZ and Tucson, AZ?
Marana has fewer restrictions than Tucson.
Marana, AZ
Pima County
Marana Town Code Chapter 11-5 applies the general noise disturbance standard to industrial and commercial operations. The I-10 corridor through Marana hosts warehousing, distribution, and manufacturing that must not create unreasonable noise affecting nearby residential areas. The Resort and Recreation zone has specific dBA thresholds in Section 11-5-3.
View full Marana rules →Tucson, AZ
Pima County
Industrial noise in Tucson is capped at 72 dBA at industrial property lines during the day and 67 dBA at night under Tucson City Code Chapter 16. Facilities adjacent to residential zones must meet the stricter residential limits at the shared boundary rather than their own zone limit.
View full Tucson rules →Key Facts Comparison
| Fact | Marana | Tucson |
|---|---|---|
| Code Section | Chapter 11-5 | - |
| Standard | General disturbance of peace | - |
| RR Zone | dBA limits at property line (Section 11-5-3) | - |
| Mining/Ag | Exempt from time restrictions | - |
| Buffering | Title 17 LDC setback requirements | - |
| Daytime Limit at PL | - | 72 dBA industrial, 62 dBA residential border |
| Nighttime Limit | - | 67 dBA industrial, 52 dBA residential border |
| Tone Penalty | - | Plus 5 dBA for tonal or impulse noise |
| Study Trigger | - | Within 500 feet of residential |
| Enforcement | - | Pima DEQ 520-724-7400 |
Highlighted rows indicate differences between cities.
Marana FAQ
Does Marana have decibel limits for industrial facilities?
Only the Resort and Recreation zone has specific dBA thresholds. Other zones rely on the general disturbance standard under Chapter 11-5, which prohibits noise that disturbs a reasonable person.
Are gravel mining operations near my home exempt from noise rules?
Yes. Sand and gravel mining operations are specifically exempt from construction noise time restrictions under Section 11-5-4, though the general disturbance standard still applies.
Tucson FAQ
What noise limit applies at an industrial property next to homes?
The residential limit governs at the shared property line: 62 dBA daytime and 52 dBA nighttime. Facilities cannot claim their own industrial zone limits against neighboring residents.
Can I complain about a factory running at night in Tucson?
Yes. File a complaint with Pima DEQ at 520-724-7400 for industrial noise. For immediate disturbances after hours, call Tucson Police non-emergency at 520-791-4444.
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