(A) Any wastewater containing in excess of the following table shall be surcharged as high strength wastewater. The issuance of surcharges for treating high strength wastewater shall not be construed as acceptance of high strength wastewater by the city. The city reserves the right and authority to prohibit the discharge of high strength wastewater when such wastewater cause or are reasonably expected to cause POTW upsets, overloading or damage to the sewer collection system.
Pollutant | Concentration, mg/l |
CBOD5 | 250 |
Total suspended solids (TSS) | 250 |
COD | 500 |
Ammonia-N (NH3-N) | 25 |
(B) The above limits apply at the point where the wastewater is discharged into the public sewer. The Superintendent may, at his or her discretion, designate in writing a sampling point other than the point where the wastewater is discharged into the public sewer so long as that designated sampling point is an accurate representation of the wastewater discharged into the public sewer.
(C) The above limits apply at the point where the wastewater is discharged to the POTW. All concentrations for metallic substances are for total metal unless indicated otherwise. The Superintendent may impose mass limitations in addition to, or in place of, the concentration-based limitations above.
(Ord. 02-09, passed 5-28-02)