§ 55.004 LOCAL LIMITS.
   (A)   The Public Works Superintendent is authorized to establish local limits pursuant to 40 C.F.R. § 403.5(c), and may modify and publish revisions from time to time appropriately.
   (B)   The following pollutant limits are established to protect against pass through and interference. No significant industrial user (SIU) shall discharge wastewater containing in excess of the following limitations listed in Table 1 below:
Table 1 - Local Limits
Pollutant
Units
Local Limit
Pollutant
Units
Local Limit
Arsenic
mg/l
0.3
Cadmium
mg/l
0.2
Chromium
mg/l
5.7
Copper
mg/l
2.1
Cyanide
mg/l
0.5
Fats, oil, grease
mg/l
100
Lead
mg/l
0.6
Mercury
mg/l
0.04
Molybdenum
mg/l
0.6
Nickel
mg/l
1.8
Selenium
mg/l
0.7
Silver
mg/l
0.2
Total metals
mg/l
10.5
Zinc
mg/l
2.8
 
   (C)   The local limits apply at the point where the wastewater is discharged to the POTW or where industrial process water enters a separate sampling vault and is the designated sample point for the SIU and the City. All concentrations for metallic substances are for total metal unless indicated otherwise. The Public Works Superintendent may impose mass limitations in addition to the concentration-based limitations above.