Category:Sound
From hmis
This page lists sounds that exceed permissible levels close to Safe Rest Villages.
Maximum Permissible Sound Levels
The general sound levels in Portland, as measured at the property line of the receiving property, are as follows:
| Source Zone | Receiver Zone | Day Hours (7 a.m. - 10 p.m.) | Night Hours (10 p.m. - 7 a.m.) |
| Residential | Residential | 55 dBA | 50 dBA* |
| Commercial | Residential | 60 dBA | 55 dBA* |
| Industrial | Residential | 65 dBA | 60 dBA* |