Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR 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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.0 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.
(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)
1 Within the range of 7.5 to 10.0 at all times.

Where this section sits in the code

Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY
Subpart AB—Primary and Secondary Titanium Subcategory

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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.0 to 10.0 at all times.

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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

(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)

1 Within the range of 7.5 to 10.0 at all times.

Collected 2026-08-27T02:26:04Z. Source file · JSON

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