Industrial Noise: Gresham vs Portland
How do industrial noise rules compare between Gresham, OR and Portland, OR?
Gresham and Portland have similar restriction levels.
Gresham, OR
Multnomah County
Oregon DEQ adopted statewide industrial noise standards under OAR 340-035-0035, setting maximum allowable decibel limits for new and existing industrial sources. While DEQ enforcement was defunded in 1991, the rules remain on the books and are referenced statewide.
View full Gresham rules →Portland, OR
Multnomah County
Industrial noise in Portland must meet PCC 18.10 receiving-zone limits; industrial sources adjacent to residential cannot exceed 55 dBA night or 60 dBA day at the property line.
View full Portland rules →Key Facts Comparison
| Fact | Gresham | Portland |
|---|---|---|
| Rule | OAR 340-035-0035 | - |
| Daytime limit | 55 dBA typical | - |
| Nighttime limit | 50 dBA typical | - |
| Enforcement | Defunded 1991 | - |
| - | - |
Highlighted rows indicate differences between cities.
Gresham FAQ
Are Oregon's industrial noise rules still legally binding?
Yes. OAR 340-035 remains in effect though DEQ stopped active enforcement in 1991. Cities, LUBA, and private plaintiffs still cite the standards in land use and nuisance proceedings.
Who enforces industrial noise complaints today?
Local code enforcement and private nuisance lawsuits primarily. DEQ accepts complaints but lacks enforcement staff. Land use appeals to LUBA can challenge industrial siting using DEQ noise standards.
Portland FAQ
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