Pollutant | Instantaneous Concentration Limits | Daily Concentration Limits |
Pollutant | Instantaneous Concentration Limits | Daily Concentration Limits |
Biochemical Oxygen Demand | 427 mg/l | |
Hexane-extractable Material | 100 mg/l | |
Ammonia-Nitrogen | 37 mg/l | |
Total Phosphorus | 7 mg/l | |
Total Suspended Solids | 305 mg/l | |
Total Arsenic | 12 ug/l | |
Total Cadmium | 14 ug/l | |
Total Chromium | 48 ug/l | |
Hexavalent Chromium | 5 ug/l | |
Total Copper | 179 ug/l | |
Amenable Cyanide |
1,195 ug/l | 5 ug/l |
Total Lead | 107 ug/l | |
Total Mercury | 0.012 ug/l (1) | |
Total Nickel | 43 ug/l | |
Total Silver | 23 ug/l | |
Total Zinc | 445 ug/l | |
Total PCB | 0.00020 ug/l (2) | |
Benzene |
174 ug/l | 1 ug/l |
Toluene |
1,753 ug/l | 187 ug/l |
Ethylbenzene |
2,048 ug/l | 1 ug/l |
Total Xylenes |
2,009 ug/l | 2 ug/l |
(1) Mercury sample collection, preservation, and handling procedures and analytical protocol for compliance monitoring shall be in accordance with U.S. EPA Method 245.1 or 245.2 or Method 1631, as determined by the City Director. Whenever the quantification level is less than or equal to the discharge limit, the discharge limit shall apply directly. However, whenever the quantification level is above the discharge limit, the discharge of mercury at or above the quantification level shall represent an exceedance of the limit. The quantification level under Methods 245.1 and 245.2 shall be 0.2 ug/l, unless a higher level is appropriate due to matrix interference. If the concentration of the discharge sample is less than the quantification level when Method 245.1 or 245.2 are applicable, the user shall be considered to be in compliance with the mercury limit for the period that the sample represents, provided that the user is also in full compliance with any mercury minimization requirements applicable to that user. The quantification level under Method 1631 shall be 0.5 ng/l, unless a higher level is appropriate due to matrix interference. Justification for higher quantification levels shall be submitted to the City Director within 30 days of such determination. This footnote does not authorize the discharge of mercury at levels which interfere with the POTW or which constitute a threat to public health, welfare or the waters of the State.
(2) Total PCB shall be defined as the sum of the concentrations of aroclors 1016, 1221, 1232, 1242, 1248, 1254, and 1260. In addition, any detected aroclor-specific measurements shall be reported. Total PCB sample collection, preservation and handling procedures and analytical protocol for compliance monitoring shall be in accordance with U.S. EPA Method 608. The quantification level shall not exceed 0.2 ug/l, unless a higher level is appropriate due to sample matrix interference. Whenever the quantification level is less than or equal to the discharge limit, the discharge limit shall apply directly; however, whenever the quantification level is above the discharge limit, the discharge of total PCB at or above the quantification level shall represent an exceedance of the limit. If the concentration of the discharge sample is less than the quantification level, the user shall be considered to be in compliance with the total PCB limit for the period that the sample represents, provided that the user is also in full compliance with any total PCB minimization requirements applicable to that user. Any aroclor analytical result which is less than the quantification level shall be considered as a zero in the summation of the aroclor results for the sample. This footnote does not authorize the discharge of total PCB at levels which interfere with the POTW or which constitute a threat to public health, welfare or the waters of the State.
(Ord. 3637, passed 3-28-2005)