CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY > SUBPART AB—Primary and Secondary Titanium Subcategory (§421.300 to §421.307) > 421.302—Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

421.302—Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:
(a) Chlorination off-gas wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of TiCl4 produced
Chromium (total) 0.412 0.168
Lead 0.393 0.187
Nickel 1.797 1.189
Titanium 0.880 0.384
Oil and grease 18.720 11.230
Total suspended solids 38.380 18.250
pH (1) (1)
AA1 Within the range of 7.5 to 10.0 at all times.
(b) Chlorination area-vent wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of TiCl4 produced
Chromium (total) 0.412 0.168
Chromium (total) 0.458 0.187
Lead 0.437 0.208
Nickel 1.997 1.321
Titanium 0.978 0.426
Oil and grease 20.800 12.480
Total suspended solids 42.640 20.280
pH (1) (1)
Code of Federal Regulations 599
AA1 Within the range of 7.5 to 10.0 at all times.
(c) TiCl4 handling wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of TiCl4 handled
Chromium (total) 0.082 0.034
Lead 0.079 0.037
Nickel 0.359 0.237
Titanium 0.176 0.077
Oil and grease 3.740 2.244
Total suspended solids 7.667 3.647
pH (1) (1)
AA1 Within the range of 7.5 to 10.0 at all times.
(d) Reduction area wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium produced
Chromium (total) 18.170 7.435
Lead 17.350 8.261
Nickel 79.300 52.450
Titanium 38.820 16.930
Oil and grease 826.100 495.600
Total suspended solids 1,693.000 805.400
pH (1) (1)
AA1 Within the range of 7.5 to 10.0 at all times.
(e) Melt cell wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium produced
Chromium (total) 9.352 3.826
Lead 8.927 4.251
Nickel 40.810 26.990
Titanium 19.980 8.714
Oil and grease 425.100 255.000
Total suspended solids 871.400 414.500
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(f) Chlorine liquefaction wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium produced
Chromium (total) 130.900 53.560
Lead 125.000 59.510
Nickel 571.300 377.900
Titanium 279.700 122.000
Oil and grease 5,951.000 3,571.000
Total suspended solids 12,200.000 5,702.000
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(g) Sodium reduction container reconditioning wash water.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium produced
Chromium (total) 0.564 0.231
Lead 0.538 0.256
Nickel 2.461 1.628
Titanium 1.205 0.526
Oil and grease 25.640 15.380
Total suspended solids 52.560 25.000
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(h) Chip crushing wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium produced
Chromium (total) 10.090 4.126
Lead 9.627 4.584
Code of Federal Regulations 600
Nickel 44.010 29.110
Titanium 21.550 9.398
Oil and grease 458.400 275.100
Total suspended solids 939.800 447.000
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(i) Acid leachate and rinse water.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium produced
Chromium (total) 5.210 2.131
Lead 4.973 2.368
Nickel 22.730 15.040
Titanium 11.130 4.854
Oil and grease 236.800 142.100
Total suspended solids 485.400 230.900
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(j) Sponge crushing and screening wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium produced
Chromium (total) 2.847 1.165
Lead 2.717 1.294
Nickel 12.420 8.217
Titanium 6.082 2.653
Oil and grease 129.400 77.640
Total suspended solids 265.300 126.200
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(k) Acid pickle and wash water.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium pickled
Chromium (total) 0.027 0.011
Lead 0.026 0.012
Nickel 0.117 0.077
Titanium 0.057 0.025
Oil and grease 1.220 0.732
Total suspended solids 2.501 1.190
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(l) Scrap milling wet air pollution control.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of scrap milled
Chromium (total) 0.995 0.407
Lead 0.950 0.452
Nickel 4.341 2.871
Titanium 2.125 0.927
Oil and grease 45.220 27.130
Total suspended solids 92.700 44.090
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(m) Scrap detergent wash water.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of scrap washed
Chromium (total) 7.948 3.252
Lead 7.587 3.613
Nickel 34.680 22.940
Titanium 16.980 7.406
Oil and grease 361.300 216.800
Total suspended solids 740.600 352.300
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(n) Casting crucible wash water.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium cast
Chromium (total) 0.210 0.086
Lead 0.200 0.095
Nickel 0.916 0.606
Titanium 0.448 0.196
Oil and grease 9.540 5.724
Total suspended solids 19.560 9.302
Code of Federal Regulations 601
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(o) Casting contact cooling water.
BPT Limitations for the Primary and Secondary Titanium Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of titanium cast
Chromium (total) 321.100 131.400
Lead 306.500 145.900
Nickel 1,401.000 926.800
Titanium 685.900 299.200
Oil and grease 14,590.000 8,757.000
Total suspended solids 29,920.000 14,230.000
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.