SUBPART C-BPT (d) Tube Reducing Spent Lubricant Subpart C-BAT. Maximum for any 1 day (1) There shall be no discharge of age process wastewater pollutants except mg/off-kg (pounds per million as provided under paragraph (d)(2) of off-pounds) of nickel-cobalt this section. formed (2) Process wastewater pollutants may be discharged, with no allowance Chromium 0.108 0.044 Nickel 0.473 0.313 for any pollutants discharged, provided Fluoride 14.7 6.50 the facility owner or operator demOil and grease 4.92 2.95 onstrates, on the basis of analytical TSS 10.1 4.80 methods set forth in or approved pursupH (') (") ant to 40 CFR part 136, that the conWithin the range of 7.5 to 10.0 at all times. centrations of nitrosamine compounds (50 FR 34270, Aug. 23, 1985; 51 FR 2884, Jan. 22, in the wastewater discharged from the 1986, as amended at 54 FR 11348, Mar. 17, 1989) tube reducing process do not exceed 0.050 mg/l of N-nitrosodimethylamine, 8 471.32 Effluent limitations rep 0.020 mg/l of N-nitrosodiphenylamine, resenting the degree of effluent re- and 0.020 mg/l of N-nitrosodi-n-propylduction attainable by the applica- amine. tion of the best available tech (3) The demonstration required under nology economically achievable paragraph (d)(2) of this section shall be (BAT). made once per month until the demExcept as provided in 40 CFR 125.30 onstration has been made for all three through 125.32, any existing point nitrosamine compounds for six consource subject to this subpart must secutive months, after which time the achieve the following effluent limita- demonstration may be made once per tions representing the degree of efflu- quarter. If a sample is found to contain ent reduction attainable by the appli- any of the foregoing nitrosamine comcation of the best available technology pounds at concentrations greater than economically achievable (BAT): those specified in subparagraph (d)(2) (a) Rolling spent neat oils--Subpart C- of this section, the actions described in BAT. There shall be no discharge of paragraph (d)(4) of this section shall be process wastewater pollutants. taken, and the demonstration required (b) Rolling spent emulsions. under subparagraph (d)(2) of this sec tion shall be made once per month SUBPART C-BAT until it has been made for all three niMaximum for trosamine compounds for six consecuPollutant or pollutant property monthly aver- tive months. any 1 day (4) If sampling results show that any mg/off-kg (pounds per million of the foregoing nitrosamine comoff-pounds) of nickel-cobalt pounds is present in the process wasterolled with emulsions water at concentrations greater than Chromium 0.063 0.026 those specified in subparagraph (d)(2) Nickel 0.094 0.063 of this section, the facility owner or Fluoride 10.1 4.49 operator shall ensure that, within thir ty days of receiving written notifica(c) Rolling contact cooling water. tion of the sampling results, there is no SUBPART C-BAT further discharge of tube reducing spent lubricant wastewater until the Maximum for owner or operator: Maximum for Pollutant or pollutant property monthly averany 1 day (i) Performs a subsequent analysis age which demonstrates that the conmg/off-kg (pounds per million centrations of the foregoing nitrosaoff-pounds) of nickel-cobalt mine compounds do not exceed the lev els specified in paragraph (d)(2) of this Chromium 0.028 section; or Nickel 0.042 0.028 (ii) Substitutes a new tube reducing Fluoride 4.49 1.99 lubricant and thereafter complies with Maximum for age rolled with water 0.011 the requirements of paragraph (d)(3) of this section; or (iii) Determines the source of the pollutant whose concentration exceeded the level specified in paragraph (d)(2) of this section and demonstrates to the satisfaction of the NPDES issuing authority that such source has been eliminated. (5) The concentration limits specified in paragraph (d)(2) of this section apply at the point of discharge from the tube reducing process. However, sampling after the tube reducing wastewater has been commingled with other wastewaters is permitted if: (i) Any dilution caused by the other wastewaters is taken into account in determining the appropriate (i.e., lower) allowable discharge concentration; and (ii) An analytical method of sufficient sensitivity is used to measure the levels of each of the foregoing nitrosamine compounds in the wastewaters being sampled. (e) Drawing spent neat oils—Subpart C-BAT. There shall be no discharge of process wastewater pollutants. (f) Drawing spent emulsions. Chromium Nickel Fluoride 0.031 0.046 4.95 0.013 0.031 2.20 (m) Forging spent lubricants—Subpart C-BAT. There shall be no discharge of process wastewater pollutants. (n) Stationary casting contact cooling water. Chromium 0.028 0.012 Nickel 0.042 0.028 Fluoride 4.49 1.99 Oil and grease 0.754 0.754 TSS 1.13 0.905 pH (') Within the range of 7.5 to 10.0 at all times. (d) Tube Reducing Spent LubricantSubpart C-NSPS. (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 Nnitrosodimethylamine, 0.020 mg/l of Nnitrosodiphenylamine, 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 com pounds 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. (4) If sampling results show that any of the foregoing nitrosamine compounds is present in the process wastewater at concentrations greater than those specified in paragraph (d)(2) of this section, the facility owner or operator shall ensure that, within thirty days of receiving written notification of the sampling results, there is no further discharge of tube reducing spent lubricant wastewater until the owner or operator: (i) Performs a subsequent analysis which demonstrates that the concentrations of the foregoing nitrosamine compounds do not exceed the levels specified in paragraph (d)(2) of this section; or (ii) Substitutes a new tube reducing lubricant and thereafter complies with the requirements of paragraph (d)(3) of this section; or (iii) Determines the source of the pollutant whose concentration exceeded the level specified in paragraph (d)(2) of this section and demonstrates to the satisfaction of the NPDES issuing authority that such source has been eliminated. (5) The concentration limits specified in paragraph (d)(2) of this section apply at the point of discharge from the tube reducing process. However, sampling after the tube reducing wastewater has been commingled with other wastewaters is permitted if: (i) Any dilution caused by the other wastewaters is taken into account in determining the appropriate (i.e., lower) allowable discharge concentration; and (ii) An analytical method of sufficient sensitivity is used to measure the levels of each of the foregoing nitrosamine compounds in the wastewaters being sampled. (e) Drawing spent neat oils–Subpart C-NSPS. There shall be no discharge of process wastewater pollutants. |
