OAR 340-035-0035
Table 9
Industrial and Commercial Noise Source
Standards for Quiet Areas
Allowable Statistical Noise Levels in Any One Hour
7:00 a.m. – 10:00 p.m.
10:00 p.m. – 7:00 a.m.
L50
50 dBA
45 dBA
L10
55 dBA
50dBA
L1
60 dBA
55dBA