edna of noise source | edna of receiving property |
| Class A | Class B | Class C |
class a | 55 dBA | 57 dBA | 60 dBA |
class b | 57 | 60 | 65 |
class c | 60 | 65 | 70 |
(b) Between the hours of 10:00 p.m. and 7:00 a.m. the noise limitations of the foregoing table shall be reduced by 10 dBA for receiving property within Class A EDNAs.
(c) At any hour of the day or night the applicable noise limitations in (a) and (b) above may be exceeded for any receiving property by no more than:
(i) 5 dBA for a total of 15 minutes in any one-hour period; or
(ii) 10 dBA for a total of 5 minutes in any one-hour period; or
(iii) 15 dBA for a total of 1.5 minutes in any one-hour period.
[Order 74-32, § 173-60-040, filed 4/22/75, effective 9/1/75.]