1161.05 SMOKE.
   (a)   Maximum Emissions. Emissions of smoke shall not exceed the maximum permitted smoke units as defined herein and Ringelmann Number ratings in Table 39, subsection (b) hereof.
 
   (b)   Table 39: Maximum Smoke Emissions.
 
During 1 Hour
Per 24-Hour Day*
All Other Times
 
Heavy
Industrial
Other
Heavy
Industrial
Other
Maximum permitted smoke units per hour per stack***
32
16
16
8
Highest Ringelmann number permitted
3**
2**
2
1
Notes for Table 39
 
*   When blowing soot or cleaning fires.
**   For a maximum duration of three minutes.
***   The number of smoke units is the product of the Ringelmann Number and the number of minutes the smoke is visible.
(Ord. 87-94. Passed 7-27-87.)