Regulations last checked for updates: May 01, 2025
Title 40 - Protection of Environment last revised: Nov 01, 2025
§ 421.300 - Applicability: Description of the primary and secondary titanium subcategory.
The provisions of this subpart are applicable to discharges resulting from the production of titanium at primary and secondary titanium facilities. Facilities which only practice vacuum distillation for sponge purification and which do not practice electrolytic recovery of magnesium are exempt from regulations. All other primary and secondary titanium facilities are covered by these regulations.
§ 421.301 - Specialized definitions.
For the purpose of this subpart the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.
§ 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)
|
(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)
|
(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)
|
(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)
|
(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)
|
(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)
|
(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)
|
(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
|
| 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)
|
(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)
|
(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)
|
(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)
|
(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)
|
(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)
|
(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
|
| pH | (
1) | (
1)
|
(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)
|
§ 421.303 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
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 available technology economically achievable:
(a) Chlorination off-gas wet air pollution control.
BAT 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) | 0.346 | 0.140
|
| Lead | 0.262 | 0.122
|
| Nickel | 0.515 | 0.346
|
| Titanium | 0.496 | 0.215 |
(b) Chlorination area-vent wet air pollution control.
BAT 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) | 0.385 | 0.156
|
| Lead | 0.291 | 0.135
|
| Nickel | 0.572 | 0.385
|
| Titanium | 0.551 | 0.239 |
(c) TiCl4 handling wet air pollution control.
BAT 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) | 0.069 | 0.028
|
| Lead | 0.052 | 0.024
|
| Nickel | 0.103 | 0.069
|
| Titanium | 0.099 | 0.043 |
(d) Reduction area wet air pollution control.
BAT 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) | 1.528 | 0.620
|
| Lead | 1.156 | 0.537
|
| Nickel | 2.272 | 1.528
|
| Titanium | 2.189 | 0.950 |
(e) Melt cell wet air pollution control.
BAT 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) | 0.787 | 0.319
|
| Lead | 0.595 | 0.276
|
| Nickel | 1.169 | 0.787
|
| Titanium | 1.127 | 0.489 |
(f) Chlorine liquefaction wet air pollution control.
BAT 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) | 11.010 | 4.463
|
| Lead | 8.332 | 3.868
|
| Nickel | 16.370 | 11.010
|
| Titanium | 15.770 | 6.844 |
(g) Sodium reduction container reconditioning wash water.
BAT 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) | 0.474 | 0.192
|
| Lead | 0.359 | 0.167
|
| Nickel | 0.705 | 0.474
|
| Titanium | 0.679 | 0.295 |
(h) Chip crushing wet air pollution control.
BAT 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) | 0.848 | 0.344
|
| Lead | 0.642 | 0.298
|
| Nickel | 1.261 | 0.848
|
| Titanium | 1.215 | 0.527 |
(i) Acid leachate and rinse water.
BAT 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) | 4.381 | 1.776
|
| Lead | 3.315 | 1.539
|
| Nickel | 6.512 | 4.381
|
| Titanium | 6.275 | 2.723 |
(j) Sponge crushing and screening wet air pollution control.
BAT 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) | 0.239 | 0.097
|
| Lead | 0.181 | 0.084
|
| Nickel | 0.356 | 0.239
|
| Titanium | 0.343 | 0.149 |
(k) Acid pickle and wash water.
BAT 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) | 0.023 | 0.009
|
| Lead | 0.017 | 0.008
|
| Nickel | 0.034 | 0.023
|
| Titanium | 0.032 | 0.014 |
(l) Scrap milling wet air pollution control.
BAT 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) | 0.084 | 0.034
|
| Lead | 0.064 | 0.030
|
| Nickel | 0.125 | 0.084
|
| Titanium | 0.120 | 0.052 |
(m) Scrap detergent wash water.
BAT 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) | 6.684 | 2.710
|
| Lead | 5.058 | 2.348
|
| Nickel | 9.935 | 6.684
|
| Titanium | 9.574 | 4.155 |
(n) Casting crucible wash water.
BAT 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) | 0.176 | 0.072
|
| Lead | 0.134 | 0.062
|
| Nickel | 0.262 | 0.176
|
| Titanium | 0.253 | 0.110 |
(o) Casting contact cooling water.
BAT 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) | 27.000 | 10.950
|
| Lead | 20.430 | 9.486
|
| Nickel | 40.140 | 27.000
|
| Titanium | 38.68 | 16.78 |
§ 421.304 - Standards of performance for new sources.
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Chlorination off-gas wet air pollution control.
NSPS 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) | 0.346 | 0.140
|
| Lead | 0.262 | 0.122
|
| Nickel | 0.515 | 0.346
|
| Titanium | 0.496 | 0.215
|
| Oil and grease | 9.360 | 9.360
|
| Total suspended solids | 14.040 | 11.230
|
| pH | (
1) | (
1)
|
(b) Chlorination area-vent wet air pollution control.
NSPS 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) | 0.385 | 0.156
|
| Lead | 0.291 | 0.135
|
| Nickel | 0.572 | 0.385
|
| Titanium | 0.551 | 0.239
|
| Oil and grease | 10.400 | 10.400
|
| Total suspended solids | 15.600 | 12.480
|
| pH | (
1) | (
1)
|
(c) TiCl4 handling wet air pollution control.
NSPS 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) | 0.069 | 0.028
|
| Lead | 0.052 | 0.024
|
| Nickel | 0.103 | 0.069
|
| Titanium | 0.099 | 0.043
|
| Oil and grease | 1.870 | 1.870
|
| Total suspended solids | 2.805 | 2.244
|
| pH | (
1) | (
1)
|
(d) Reduction area wet air pollution control.
NSPS 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) | 1.528 | 0.620
|
| Lead | 1.156 | 0.537
|
| Nickel | 2.272 | 1.528
|
| Titanium | 2.189 | 0.950
|
| Oil and grease | 41.300 | 41.300
|
| Total suspended solids | 61.950 | 49.560
|
| pH | (
1) | (
1)
|
(e) Melt cell wet air pollution control.
NSPS 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) | 0.787 | 0.319
|
| Lead | 0.595 | 0.276
|
| Nickel | 1.169 | 0.787
|
| Titanium | 1.127 | 0.489
|
| Oil and grease | 21.260 | 21.260
|
| Total suspended solids | 31.890 | 25.510
|
| pH | (
1) | (
1)
|
(f) Chlorine liquefaction wet air pollution control.
NSPS for the Primary and Secondary Titanium Subcategory
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of titanium produced
|
| Chromium (total) | 0.000 | 0.000
|
| Lead | 0.000 | 0.000
|
| Nickel | 0.000 | 0.000
|
| Titanium | 0.000 | 0.000
|
| Oil and grease | 0.000 | 0.000
|
| Total suspended solids | 0.000 | 0.000
|
| pH | (
1) | (
1)
|
(g) Sodium reduction container reconditioning wash.
NSPS for the Primary and Secondary Titanium Subcategory
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of titanium produced
|
| Chromium (total) | 0.474 | 0.192
|
| Lead | 0.359 | 0.167
|
| Nickel | 0.705 | 0.474
|
| Titanium | 0.679 | 0.295
|
| Oil and grease | 12.820 | 12.820
|
| Total suspended solids | 19.230 | 15.380
|
| pH | (
1) | (
1)
|
(h) Chip crushing wet air pollution control.
NSPS for the Primary and Secondary Titanium Subcategory
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of titanium produced
|
| Chromium (total) | 0.000 | 0.000
|
| Lead | 0.000 | 0.000
|
| Nickel | 0.000 | 0.000
|
| Titanium | 0.000 | 0.000
|
| Oil and grease | 0.000 | 0.000
|
| Total suspended solids | 0.000 | 0.000
|
| pH | (
1) | (
1)
|
(i) Acid leachate and rinse water.
NSPS for the Primary and Secondary Titanium Subcategory
| Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
|---|
| mg/kg (pound per million pounds) of titanium produced
|
| Chromium (total) | 4.381 | 1.776
|
| Lead | 3.315 | 1.539
|
| Nickel | 6.512 | 4.381
|
| Titanium | 6.275 | 2.723
|
| Oil and grease | 118.400 | 118.400
|
| Total suspended solids | 177.600 | 142.100
|
| pH | (
1) | (
1)
|
(j) Sponge crushing and screening wet air pollution control.
NSPS 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) | 0.000 | 0.000
|
| Lead | 0.000 | 0.000
|
| Nickel | 0.000 | 0.000
|
| Titanium | 0.000 | 0.000
|
| Oil and grease | 0.000 | 0.000
|
| Total suspended solids | 0.000 | 0.000
|
| pH | (
1) | (
1)
|
(k) Acid pickle and wash water.
NSPS 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) | 0.023 | 0.009
|
| Lead | 0.017 | 0.008
|
| Nickel | 0.034 | 0.023
|
| Titanium | 0.032 | 0.014
|
| Oil and grease | 0.610 | 0.610
|
| Total suspended solids | 0.915 | 0.732
|
| pH | (
1) | (
1)
|
(l) Scrap milling wet air pollution control.
NSPS 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) | 0.000 | 0.000
|
| Lead | 0.000 | 0.000
|
| Nickel | 0.000 | 0.000
|
| Titanium | 0.000 | 0.000
|
| Oil and grease | 0.000 | 0.000
|
| Total suspended solids | 0.000 | 0.000
|
| pH | (
1) | (
1)
|
(m) Scrap detergent wash water.
NSPS 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) | 6.684 | 2.710
|
| Lead | 5.058 | 2.348
|
| Nickel | 9.935 | 6.684
|
| Titanium | 9.574 | 4.155
|
| Oil and grease | 180.600 | 180.600
|
| Total suspended solids | 271.000 | 216.000
|
| pH | (
1) | (
1)
|
(n) Casting crucible wash water.
NSPS 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) | 0.176 | 0.072
|
| Lead | 0.134 | 0.062
|
| Nickel | 0.262 | 0.176
|
| Titanium | 0.253 | 0.110
|
| Oil and grease | 4.770 | 4.770
|
| Total suspended solids | 7.155 | 5.724
|
| pH | (
1) | (
1)
|
(o) Casting contact cooling water.
NSPS 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) | 27.000 | 10.950
|
| Lead | 20.430 | 9.486
|
| Nickel | 40.140 | 27.000
|
| Titanium | 38.680 | 16.780
|
| Oil and grease | 729.700 | 729.700
|
| Total suspended solids | 1,095.000 | 875.700
|
| pH | (
1) | (
1)
|
§ 421.305 - Pretreatment standards for existing sources.
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 achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in primary and secondary titanium process wastewater introduced into a POTW must not exceed the following values:
(a) Chlorination off-gas wet air pollution control.
PSES 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) | 0.346 | 0.140
|
| Lead | 0.262 | 0.122
|
| Nickel | 0.515 | 0.346
|
| Titanium | 0.496 | 0.215 |
(b) Chlorination Area-vent wet air pollution control.
PSES 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) | 0.385 | 0.156
|
| Lead | 0.291 | 0.135
|
| Nickel | 0.572 | 0.385
|
| Titanium | 0.551 | 0.239 |
(c) TiCl4 handling wet air pollution control.
PSES 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) | 0.069 | 0.028
|
| Lead | 0.052 | 0.024
|
| Nickel | 0.103 | 0.069
|
| Titanium | 0.099 | 0.043 |
(d) Reduction area wet air pollution control.
PSES 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) | 1.528 | 0.620
|
| Lead | 1.156 | 0.537
|
| Nickel | 2.272 | 1.528
|
| Titanium | 2.189 | 0.950 |
(e) Melt cell wet air pollution control.
PSES 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) | 0.787 | 0.319
|
| Lead | 0.595 | 0.276
|
| Nickel | 1.169 | 0.787
|
| Titanium | 1.127 | 0.489 |
(f) Chlorine liquefaction wet air pollution control.
PSES 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) | 11.010 | 4.463
|
| Lead | 8.332 | 3.868
|
| Nickel | 16.370 | 11.010
|
| Titanium | 15.770 | 6.844 |
(g) Sodium reduction container reconditioning wash water.
PSES 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) | 0.474 | 0.192
|
| Lead | 0.359 | 0.167
|
| Nickel | 0.705 | 0.474
|
| Titanium | 0.679 | 0.295 |
(h) Chip crushing wet air pollution control.
PSES 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) | 0.848 | 0.344
|
| Lead | 0.642 | 0.298
|
| Nickel | 1.261 | 0.848
|
| Titanium | 1.215 | 0.527 |
(i) Acid leachate and rinse water.
PSES 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) | 4.381 | 1.776
|
| Lead | 3.315 | 1.539
|
| Nickel | 6.512 | 4.381
|
| Titanium | 6.275 | 2.723 |
(j) Sponge crushing and screening wet air pollution control.
PSES 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) | 0.239 | 0.097
|
| Lead | 0.181 | 0.084
|
| Nickel | 0.356 | 0.239
|
| Titanium | 0.343 | 0.149 |
(k) Acid pickle and wash water.
PSES 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) | 0.023 | 0.009
|
| Lead | 0.017 | 0.008
|
| Nickel | 0.034 | 0.023
|
| Titanium | 0.032 | 0.014 |
(l) Scrap milling wet air pollution control.
PSES 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) | 0.084 | 0.034
|
| Lead | 0.064 | 0.030
|
| Nickel | 0.125 | 0.084
|
| Titanium | 0.120 | 0.052 |
(m) Scrap detergent wash water.
PSES 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) | 6.684 | 2.710
|
| Lead | 5.058 | 2.348
|
| Nickel | 9.935 | 6.684
|
| Titanium | 9.574 | 4.155 |
(n) Casting crucible wash water.
PSES 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) | 0.176 | 0.072
|
| Lead | 0.134 | 0.062
|
| Nickel | 0.262 | 0.176
|
| Titanium | 0.253 | 0.110 |
(o) Casting contact cooling water.
PSES 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) | 27.000 | 10.950
|
| Lead | 20.430 | 9.486
|
| Nickel | 40.140 | 27.000
|
| Titanium | 38.680 | 16.780 |
§ 421.306 - Pretreatment standards for new sources.
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. The mass of wastewater pollutants in primary and secondary titanium process wastewater introduced into a POTW shall not exceed the following values:
(a) Chlorination off-gas wet air pollution control.
PSNS 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) | 0.346 | 0.140
|
| Lead | 0.262 | 0.122
|
| Nickel | 0.515 | 0.346
|
| Titanium | 0.496 | 0.215 |
(b) Chlorination area-vent wet air pollution control.
PSNS 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) | 0.385 | 0.156
|
| Lead | 0.291 | 0.135
|
| Nickel | 0.572 | 0.385
|
| Titanium | 0.551 | 0.239 |
(c) TiCl4 handling wet air pollution control.
PSNS 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) | 0.069 | 0.028
|
| Lead | 0.052 | 0.024
|
| Nickel | 0.103 | 0.069
|
| Titanium | 0.099 | 0.043 |
(d) Reduction area wet air pollution control.
PSNS 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) | 1.528 | 0.620
|
| Lead | 1.156 | 0.537
|
| Nickel | 2.272 | 1.528
|
| Titanium | 2.189 | 0.950 |
(e) Melt cell wet air pollution control.
PSNS 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) | 0.787 | 0.319
|
| Lead | 0.595 | 0.276
|
| Nickel | 1.169 | 0.787
|
| Titanium | 1.127 | 0.489 |
(f) Chlorine liquefaction wet air pollution control.
PSNS 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) | 0.000 | 0.000
|
| Lead | 0.000 | 0.000
|
| Nickel | 0.000 | 0.000
|
| Titanium | 0.000 | 0.000 |
(g) Sodium reduction container reconditioning wash water.
PSNS 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) | 0.474 | 0.192
|
| Lead | 0.359 | 0.167
|
| Nickel | 0.705 | 0.474
|
| Titanium | 0.679 | 0.295 |
(h) Chip crushing wet air pollution control.
PSNS 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) | 0.000 | 0.000
|
| Lead | 0.000 | 0.000
|
| Nickel | 0.000 | 0.000
|
| Titanium | 0.000 | 0.000 |
(i) Acid leachate and rinse water.
PSNS 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) | 4.381 | 1.776
|
| Lead | 3.315 | 1.539
|
| Nickel | 6.512 | 4.381
|
| Titanium | 6.275 | 2.723 |
(j) Sponge crushing and screening wet air pollution control.
PSNS 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) | 0.000 | 0.000
|
| Lead | 0.000 | 0.000
|
| Nickel | 0.000 | 0.000
|
| Titanium | 0.000 | 0.000 |
(k) Acid pickle and wash water.
PSNS 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) | 0.023 | 0.009
|
| Lead | 0.017 | 0.008
|
| Nickel | 0.034 | 0.023
|
| Titanium | 0.032 | 0.014 |
(l) Scrap milling wet air pollution control.
PSNS 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) | 0.000 | 0.000
|
| Lead | 0.000 | 0.000
|
| Nickel | 0.000 | 0.000
|
| Titanium | 0.000 | 0.000 |
(m) Scrap detergent wash water.
PSNS 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) | 6.684 | 2.710
|
| Lead | 5.058 | 2.348
|
| Nickel | 9.935 | 6.684
|
| Titanium | 9.574 | 4.155 |
(n) Casting crucible wash water.
PSNS 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) | 0.176 | 0.072
|
| Lead | 0.134 | 0.062
|
| Nickel | 0.262 | 0.176
|
| Titanium | 0.253 | 0.110 |
(o) Casting contact cooling water.
PSNS 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) | 27.000 | 10.950
|
| Lead | 20.430 | 9.486
|
| Nickel | 40.140 | 27.000
|
| Titanium | 38.680 | 16.780 |
§ 421.307 - [Reserved]
authority: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) and the Water Quality Act of 1987 (the “Act”);
33 U.S.C. 1311,
1314,
c,
e,
and, 1316 (b) and
c, 1317 (b) and
c,
1318; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4
source: 49 FR 8790, Mar. 8, 1984, unless otherwise noted.
cite as: 40 CFR 421.304