14.40.080 Local limits.
The following pollutant limits are established to protect against pass through and interference. No person shall discharge wastewater containing in excess of the following daily maximum allowable discharge limits:
|
arsenic |
0.5 mg/L |
|
cadmium |
0.24 mg/L |
|
chromium |
5.0 mg/L |
|
copper |
3.0 mg/L |
|
cyanide |
0.65 mg/L |
|
lead |
1.89 mg/L |
|
mercury |
0.1 mg/L |
|
nickel |
2.83 mg/L |
|
silver |
0.49 mg/L |
|
zinc |
4.00 mg/L |
|
nonpolar fats, oils, and grease (NPFOG) |
200 mg/L |
The above limits apply at the point where the wastewater is discharged to the POTW (end of the pipe). Categorical pretreatment standards apply at the end of the process. However, the director may elect to have local limits apply after pretreatment and/or prior to mixing with dilution flows.
All concentrations for metallic substances are for total metal unless indicated otherwise. The director may impose mass limitations in addition to (or in place of) the concentration-based limitations above.
Where a user is subject to a categorical pretreatment standard and a local limit for a given pollutant, the more stringent limit or applicable pretreatment standard shall apply.
The city council authorizes the director to revise local limits. (Ord. 3070-08 § 2.4, 2008.)