40 CFR 471.95: Pretreatment standards for new sources (PSNS).

Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources (PSNS). The mass of wastewater shall not exceed the following:

(a) Rolling spent neat oils—subpart I—PSNS. There shall be no discharge of process wastewater pollutants.

(b) Drawing spent lubricants—subpart I—PSNS. There shall be no discharge of process wastewater pollutants.

(c) Extrusion spent emulsions—subpart I—PSNS. There shall be no discharge of process wastewater pollutants.

(d) Extrusion press hydraulic fluid leakage.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium extruded

Chromium 0.104 0.043

Cyanide 0.069 0.029

Nickel 0.455 0.301

Ammonia 31.6 13.9

Fluoride 14.1 6.26

(e) Swaging spent neat oils—subpart I—PSNS. There shall be no discharge of process wastewater pollutants.

(f) Heat treatment contact cooling water.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off/kg (pounds per million off-pounds) of zirconium-hafnium heat treated

Chromium 0.015 0.006

Cyanide 0.010 0.004

Nickel 0.066 0.044

Ammonia 4.57 2.01

Fluoride 2.04 0.906dash;Subpart

(g) Tube Reducing Spent Lubricant—subpart I—PSNS. (1) There shall be no discharge of process wastewater pollutants except as provided under paragraph (g)(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 subparagraph (g)(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 subparagraph (g)(2) of this section, the actions described in paragraph (g)(4) of this section shall be taken, and the demonstration required under paragraph (g)(2) 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 subparagraph (g)(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 (g)(2) of this section; or

(ii) Substitutes a new tube reducing lubricant and thereafter complies with the requirements of paragraph (g)(3) of this section; or

(iii) Determines the source of the pollutant whose concentration exceeded the level specified in paragraph (g)(2) of this section and demonstrates to the satisfaction of the POTW control authority that such source has been eliminated.

(5) The concentration limits specified in paragraph (g)(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.

(h) Surface treatment spent baths.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off/kg (pounds per million off-pounds) of zirconium-hafnium surface treated

Chromium 0.150 0.061

Cyanide 0.099 0.041

Nickel 0.653 0.432

Ammonia 45.3 20

Fluoride 20 8.98

(i) Surface treatment rinse.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off/kg (pounds per million off-pounds) of zirconium-hafnium surface treated

Chromium 0.391 0.160

Cyanide 0.258 0.107

Nickel 1.71 1.13

Ammonia 119 52.1

Fluoride 52.9 23.5

(j) Alkaline cleaning spent baths.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off/kg (pounds per million off-pounds) of zirconium-hafnium alkaline cleaned

Chromium 0.704 0.288

Cyanide 0.464 0.192

Nickel 3.07 2.03

Ammonia 214 93.8

Fluoride 95.2 42.3

(k) Alkaline cleaning rinse.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium alkaline cleaned

Chromium 1.38 0.565

Cyanide 0.911 0.377

Nickel 6.03 3.99

Ammonia 419 184

Fluoride 187 82.9

(l) Sawing or grinding spent emulsions.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium sawed or ground with emulsions

Chromium 0.124 0.051

Cyanide 0.082 0.034

Nickel 0.540 0.357

Ammonia 37.5 16.50

Fluoride 16.7 7.42

(m) Wet air pollution control scrubber blowdown—subpart I—PSNS. There shall be no allowance for the discharge of process wastewater pollutants.

(n) Degreasing spent solvents—subpart I—PSNS. There shall be no discharge of process wastewater pollutants.

(o) Degreasing rinse—subpart I—PSNS. There shall be no discharge of process wastewater pollutants.

(p) Molten salt rinse.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium rinsed following molten salt treatment

Chromium 0.333 0.136

Cyanide 0.220 0.091

Nickel 1.45 0.960

Ammonia 101 44.3

Fluoride 45.0 20.0

(q) Sawing or grinding contact cooling water.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium sawed or ground with contact cooling water

Chromium 0.142 0.058

Cyanide 0.093 0.039

Nickel 0.617 0.408

Ammonia 42.8 18.8

Fluoride 19.1 8.48

(r) Sawing or grinding rinse.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of sawed or ground zirconium-hafnium rinsed

Chromium 0.079 0.033

Cyanide 0.052 0.022

Nickel 0.346 0.229

Ammonia 24.0 10.6

Fluoride 10.7 4.75

(s) Sawing or grinding spent neat oils—subpart I—PSNS. There shall be no discharge of process wastewater pollutants.

(t) Inspection and testing wastewater.

Subpart I—PSNS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of zirconium-hafnium tested

Chromium 0.007 0.003

Cyanide 0.005 0.002

Nickel 0.030 0.020

Ammonia 2.06 0.903

Fluoride 0.917 0.407