SUBPART - Subpart Y—Primary Rare Earth Metals Subcategory

Collapse to view only §§ 421.272-421.273 - §[Reserved]

§ 421.270 - Applicability: Description of the primary rare earth metals subcategory.
§ 421.271 - Specialized definitions.
§§ 421.272-421.273 - §[Reserved]
§ 421.274 - Standards of performance for new sources.
§ 421.275 - Pretreatment standards for existing sources.
§ 421.276 - Pretreatment standards for new sources.
§ 421.277 - [Reserved]

§ 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		Hexachlorobenzene	0.042	0.042	Chromium (total)	1.544	0.626	Lead	1.168	0.542	Nickel	2.295	1.544	Total suspended solids	62.600	50.080	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		Hexachlorobenzene	0.007	0.007	Chromium (total)	0.272	0.110	Lead	0.206	0.095	Nickel	0.404	0.272	Total suspended solids	11.010	8.808	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		Hexachlorobenzene	0.094	0.094	Chromium (total)	3.474	1.409	Lead	2.629	1.221	Nickel	5.165	3.474	Total suspended solids	140.900	112.700	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		Hexachlorobenzene	0.000	0.000	Chromium (total)	0.000	0.000	Lead	0.000	0.000	Nickel	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.

(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		Hexachlorobenzene	0.004	0.004	Chromium (total)	0.134	0.054	Lead	0.101	0.047	Nickel	0.199	0.134	Total suspended solids	5.430	4.334	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		Hexachlorobenzene	0.042	0.042	Chromium (total)	1.544	0.626	Lead	1.168	0.542	Nickel	2.295	1.544

(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		Hexachlorobenzene	0.007	0.007	Chromium (total)	0.272	0.110	Lead	0.206	0.095	Nickel	0.404	0.272

(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		Hexachlorobenzene	0.094	0.094	Chromium (total)	3.474	1.409	Lead	2.629	1.221	Nickel	5.165	3.474

(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		Hexachlorobenzene	0.000	0.000	Chromium (total)	0.000	0.000	Lead	0.000	0.000	Nickel	0.000	0.000

(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		Hexachlorobenzene	0.004	0.004	Chromium (total)	0.134	0.054	Lead	0.101	0.047	Nickel	0.199	0.134

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		Hexachlorobenzene	0.042	0.042	Chromium (total)	1.544	0.626	Lead	1.168	0.542	Nickel	2.295	1.544

(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		Hexachlorobenzene	0.007	0.007	Chromium (total)	0.272	0.110	Lead	0.206	0.095	Nickel	0.404	0.272

(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		Hexachlorobenzene	0.094	0.094	Chromium (total)	3.474	1.409	Lead	2.629	1.221	Nickel	5.165	3.474

(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		Hexachlorobenzene	0.000	0.000	Chromium (total)	0.000	0.000	Lead	0.000	0.000	Nickel	0.000	0.000

(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		Hexachlorobenzene	0.004	0.004	Chromium (total)	0.134	0.054	Lead	0.101	0.047	Nickel	0.199	0.134

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