§ 471.34 Pretreatment standards for existing sources (PSES).
Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and by August 23, 1988 achieve the following pretreatment standards for existing sources (PSES). The mass of wastewater pollutants in nickel-cobalt forming wastewater introduced into a POTW shall not exceed the following values:
(a) Rolling spent neat oils—subpart C—PSES. There shall be no discharge of process wastewater pollutants.
(b) Rolling spent emulsions.
Subpart C—PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of nickel-cobalt rolled with emulsions | ||
| Chromium | 0.063 | 0.026 |
| Nickel | 0.094 | 0.063 |
| Fluoride | 10.1 | 4.49 |
(c) Rolling contact cooling water.
Subpart C—PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/off-kg (pounds per million off-pounds) of nickel-cobalt rolled with water | ||
| Chromium | 0.028 | 0.011 |
| Nickel | 0.042 | 0.028 |
| Fluoride | 4.49 | 1.99 |
(d) Tube Reducing Spent Lubricant—subpart C—PSES. (1) There shall be no discharge of process wastewater pollutants except as provided under paragraph (d)(2) of this section.
(2) Process wastewater pollutants may be discharged, with no allowance for any pollutants discharged, provided the facility owner or operator demonstrates, on the basis of analytical methods set forth in or approved pursuant to 40 CFR part 136, that the concentrations of nitrosamine compounds in the wastewater discharged from the tube reducing process do not exceed 0.050 mg/l of N-nitrosodimethylamine, 0.020 mg/l of N-nitrosodiphenylamine, and 0.020 mg/l of N-nitrosodi-n-propylamine.
(3) The demonstration required under paragraph (d)(2) of this section shall be made once per month until the demonstration has been made for all three nitrosamine compounds for six consecutive months, after which time the demonstration may be made once per quarter. If a sample is found to contain any of the foregoing nitrosamine compounds at concentrations greater than those specified in paragraph (d)(2) of this section, the actions described in paragraph (d)(4) of this section shall be taken, and the demonstration required under paragraph (d)(2) of this section shall be made once per month until it has been made for all three nitrosamine compounds for six consecutive months.