Section NR 290.22 - Discharge standards(1) PRETREATMENT STANDARDS FOR EXISTING SOURCES (PSES). Except as provided in s. NR 211.13 any existing source subject to this section which introduces pollutants into a publicly owned treatment works shall comply with ch. NR 211 and achieve the following pretreatment standards for existing sources by July 1, 1984. (a) There shall be no discharge of polychlorinated biphenyl compounds such as those used for transformer fluid.(b) The quantity of pollutants in each of the wastewater sources identified in Table 4 may not exceed the concentration listed in that table.(c) Where the discharger requests and the control authority approves in writing, instead of monitoring cooling tower blowdown, compliance with the limitations for the 126 priority pollutants may be determined by engineering calculations which demonstrate that the regulated pollutants are not present or are present in the final discharge in no detectable amount.(2) PRETREATMENT STANDARDS FOR NEW SOURCES ( PSNS). Except as provided in s. NR 211.13 any new source subject to this section which introduces pollutants into a publicly owned treatment works shall comply with ch. NR 211 and the following pretreatment standards for new sources: (a) There may be no discharge of polychlorinated biphenyl compounds such as those used for transformer fluid.(b) The quantity of pollutants in each of the wastewater sources identified in Table 4 may not exceed the concentration listed in that table.(c) Where the discharger requests and the control authority approves in writing, instead of monitoring cooling tower blowdown, compliance with the limitations for the 126 priority pollutants may be determined by engineering calculations which demonstrate that the regulated pollutants are not present or are present in the final discharge in no detectable amount.(d) There may be no discharge of wastewater pollutants from fly ash transport water. Table 4
PSES and PSNS Effluent Limitations in mg/l
Wastewater | Copper (total) Max. for any 1 day | Chromium (total) Max. for any time | Zinc (total) Max. for any time | Other Priority Pollutants Max. for any time |
Chemical metal cleaning wastes | 1.0 |
Cooling tower blowdown1 | 0.2 | 1.0 | nda |
Fly ash transport water2 |
1Except as shown for total chromium and total zinc, discharge of cooling tower blowdown shall be limited to no detectable amount for the 126 priority pollutants contained in chemicals added for cooling tower maintenance.
2There may be no discharge of wastewater pollutants from fly ash transport water for PSNS.
3"nda" means no detectable amount.
Wis. Admin. Code Department of Natural Resources NR 290.22
Cr. Register, October, 1986, No. 370, eff. 11-1-86.