40 CFR 471.52: Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT):

(a) Rolling spent neat oils and graphite based lubricants—subpart E—BAT. There shall be no discharge of process wastewater pollutants.

(b) Rolling spent emulsions.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals rolled with emulsions

Copper 0.549 0.262

Nickel 0.236 0.157

Fluoride 25.5 11.3

Molybdenum 2.16 0.957

(c) Drawing spent lubricants—subpart E—BAT. There shall be no discharge of process wastewater pollutants.

(d) Extrusion spent lubricants—subpart E—BAT. There shall be no discharge of process wastewater pollutants.

(e) Extrusion press hydraulic fluid leakage.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals extruded

Copper 1.5 0.730

Nickel 0.650 0.440

Fluoride 71.000 31.0

Molybdenum 5.99 2.66

(f) Forging spent lubricants—subpart E—BAT. There shall be no discharge of process wastewater pollutants.

(g) Forging contact cooling water.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of forged refractory metals cooled with water

Copper 0.041 0.020

Nickel 0.018 0.012

Fluoride 1.92 0.853

Molybdenum 0.163 0.072

(h) Equipment cleaning wastewater.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals formed

Copper 0.174 0.083

Nickel 0.075 0.051

Fluoride 8.09 3.59

Molybdenum 0.684 0.303

(i) Metal powder production wastewater.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals powder produced

Copper 0.360 0.172

Nickel 0.155 0.104

Fluoride 16.7 7.42

Molybdenum 1.42 0.627

(j) Metal powder production floor wash wastewater—subpart E—BAT. There shall be no discharge of process wastewater pollutants.

(k) Metal powder pressing spent lubricants—subpart E—BAT. There shall be no discharge of process wastewater pollutants.

(l) Surface treatment spent baths.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals surface treated

Copper 0.498 0.237

Nickel 0.214 0.144

Fluoride 23.2 10.3

Molybdenum 1.96 0.868

(m) Surface treatment rinse.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals surface treated

Copper 15.5 7.38

Nickel 6.66 4.48

Fluoride 720 320

Molybdenum 60.9 27.0

(n) Alkaline cleaning spent baths.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned

Copper 0.428 0.204

Nickel 0.184 0.124

Fluoride 19.9 8.82

Molybdenum 1.68 0.745

(o) Alkaline cleaning rinse.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned

Copper 10.5 4.98

Nickel 4.49 3.02

Fluoride 486 216

Molybdenum 41.1 18.2

(p) Molten salt rinse.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals treated with molten salt

Copper 0.810 0.386

Nickel 0.348 0.234

Fluoride 37.7 16.7

Molybdenum 3.19 1.41

(q) Tumbling or burnishing wastewater.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals tumbled or burnished

Copper 1.60 0.763

Nickel 0.688 0.463

Fluoride 74.4 33.0

Molybdenum 6.29 2.79

(r) Sawing or grinding spent neat oils—subpart E—BAT. There shall be no discharge of process wastewater pollutants.

(s) Sawing or grinding spent emulsions.

Subpart E—BAT

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

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

Copper 0.380 0.181

Nickel 0.164 0.110

Fluoride 17.7 7.84

Molybdenum 1.50 0.663

(t) Sawing or grinding contact cooling water.

Subpart E—BAT

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

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

Copper 3.11 1.48

Nickel 1.34 0.899

Fluoride 145.0 64.2

Molybdenum 12.2 5.42

(u) Sawing or grinding rinse.

Subpart E—BAT

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 refractory metals rinsed

Copper 0.018 0.009

Nickel 0.008 0.005

Fluoride 0.803 0.357

Molybdenum 0.068 0.030

(v) Wet air pollution control scrubber blowdown.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals sawed, surface coated or surface treated

Copper 1.01 0.480

Nickel 0.433 0.291

Fluoride 46.8 20.8

Molybdenum 3.96 1.76

(w) Miscellaneous wastewater sources.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals formed

Copper 0.442 0.211

Nickel 0.190 0.128

Fluoride 20.6 9.11

Molybdenum 1.74 0.770

(x) Dye penetrant testing wastewater.

Subpart E—BAT

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

mg/off-kg (pounds per million off-pounds) of refractory metals product tested

Copper 0.100 0.048

Nickel 0.043 0.029

Fluoride 4.62 2.05

Molybdenum 0.391 0.173

(y) Degreasing spent solvents—subpart E—BAT. There shall be no discharge of process wastewater pollutants.