1. Regulations
  2. title 40
  3. chapter I-i30
  4. part 421
  5. subpart Y
  6. § 421.270

Collapse to view only § 421.270 - Applicability: Description of the primary rare earth metals subcategory.

§ 421.270 - Applicability: Description of the primary rare earth metals subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of rare earth metals and mischmetal by primary rare earth metals facilities processing rare earth metal oxides, chlorides, and fluorides.

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.270

§ 421.271 - Specialized definitions.

In addition to what is provided below:

(a) The general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

(b) The term rare earth metals refers to the elements scandium, yttrium, and lanthanum to lutetium, inclusive.

(c) The term mischmetal refers to a rare earth metal alloy comprised of the natural mixture of rare earths to about 94-99 percent. The balance of tha alloy includes traces of other elements and one to two percent iron.

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.271

§§ 421.272-421.273 - §[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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.272-421.273

§ 421.274 - Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Dryer Vent Water Quench and Scrubber.

NSPS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides Hexachlorobenzene0.0420.042 Chromium (total)1.5440.626 Lead1.1680.542 Nickel2.2951.544 Total suspended solids62.60050.080 pH( 1)( 1)

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

(b) Dryer vent caustic wet air pollution control.

NSPS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides Hexachlorobenzene0.0070.007 Chromium (total)0.2720.110 Lead0.2060.095 Nickel0.4040.272 Total suspended solids11.0108.808 pH( 1)( 1)

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

(c) Electrolytic cell water quench and scrubber.

NSPS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0940.094 Chromium (total)3.4741.409 Lead2.6291.221 Nickel5.1653.474 Total suspended solids140.900112.700 pH( 1)( 1)

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

(d) Electrolytic cell caustic wet air pollution control.

NSPS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0000.000 Chromium (total)0.0000.000 Lead0.0000.000 Nickel0.0000.000 Total suspended solids0.0000.000 pH( 1)( 1)

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

(e) Sodium hypochlorite filter backwash.

NSPS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0040.004 Chromium (total)0.1340.054 Lead0.1010.047 Nickel0.1990.134 Total suspended solids5.4304.334 pH( 1)( 1)

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

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.274

§ 421.275 - 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 rare earth metals process wastewater introduced into a POTW must not exceed the following values:

(a) Dryer vent water quench scrubber.

PSES for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides Hexachlorobenzene0.0420.042 Chromium (total)1.5440.626 Lead1.1680.542 Nickel2.2951.544

(b) Dryer vent caustic wet air pollution control.

PSES for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides Hexachlorobenzene0.0070.007 Chromium (total)0.2720.110 Lead0.2060.095 Nickel0.4040.272

(c) Electrolytic cell water quench and scrubber.

PSES for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0940.094 Chromium (total)3.4741.409 Lead2.6291.221 Nickel5.1653.474

(d) Electrolytic cell caustic wet air pollution control.

PSES for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0000.000 Chromium (total)0.0000.000 Lead0.0000.000 Nickel0.0000.000

(e) Sodium hypochlorite filter backwash.

PSES for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0040.004 Chromium (total)0.1340.054 Lead0.1010.047 Nickel0.1990.134

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.275

§ 421.276 - 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 rare earth metals process wastewater introduced into a POTW shall not exceed the following values:

(a) Dryer vent water quench and scrubber.

PSNS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides Hexachlorobenzene0.0420.042 Chromium (total)1.5440.626 Lead1.1680.542 Nickel2.2951.544

(b) Dryer vent caustic wet air pollution control.

PSNS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides Hexachlorobenzene0.0070.007 Chromium (total)0.2720.110 Lead0.2060.095 Nickel0.4040.272

(c) Electrolytic cell water quench and scrubber.

PSNS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0940.094 Chromium (total)3.4741.409 Lead2.6291.221 Nickel5.1653.474

(d) Electrolytic cell caustic wet air pollution control.

PSNS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0000.000 Chromium (total)0.0000.000 Lead0.0000.000 Nickel0.0000.000

(e) Sodium hypochlorite filter backwash.

PSNS for the Primary Rare Earth Metals Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene0.0040.004 Chromium (total)0.1340.054 Lead0.1010.047 Nickel0.1990.134

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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.276

§ 421.277 - [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 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 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 421.277