Nonferrous Metals Manufacturing Point Source Category

§ 421.1 — Applicability.

This part applies to facilities producing primary metals from ore concentrates and recovering secondary metals from recycle wastes which discharge or may discharge pollutants to waters of the United States or which introduce or may introduce pollutants into a publicly owned treatment works. The applicability of this part to alloying or casting of nonferrous metals is limited to alloying or casting of hot metal directly from the nonferrous metals manufacturing process without cooling. Remelting followed by alloying or cooling is included in the aluminum forming, nonferrous metals forming, or metal molding and casting point source categories.

§ 421.2 — [Reserved]

§ 421.3 — Monitoring and reporting requirements.

The following special monitoring requirements apply to all facilities controlled by this regulation:

(a) The monthly average regulatory values shall be the basis for the monthly average discharge in direct discharge permits and for pretreatment standards. Compliance with the monthly discharge limit is required regardless of the number of samples analyzed and averaged.

(b) Periodic analysis for cyanide are not required for a facility in the primary beryllium subcategory (subpart O of this part) when both of the following conditions are met:

(1) The first wastewater sample taken in each calandar year has been analyzed and found to contain less than 0.07 mg/1 cyanide.

(2) The owner or operator of the primary beryllium manufacturing facility certifies in writing to the POTW authority or permit issuing authority that cyanide is neither generated nor used in the beryllium manufacturing process employed at that facility.

§ 421.4 — Compliance date for pretreatment standards for existing sources (PSES).

The PSES compliance deadline in subparts A through M is March 8, 1987. The PSES compliance deadline for plants in subparts N through AE is September 20, 1988.

§ 421.5 — Removal allowances for pretreatment standards.

Removal allowances pursuant to 40 CFR 403.7(a) may be granted for the toxic metals limited in 40 CFR part 421 when used as indicator pollutants.

§ 421.10 — Applicability; description of the bauxite refining subcategory.

The provisions of this subpart are applicable to discharges resulting from the refining of bauxite to alumina by the Bayer process or by the combination process.

§ 421.11 — Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

(b) The term bauxite shall mean ore containing alumina monohydrate or alumina trihydrate which serves as the principal raw material for the production of alumina by the Bayer process or by the combination process.

(c) The term product shall mean alumina.

(d) For all impoundments the term within the impoundment for purposes of calculating the volume of process wastewater which may be discharged, shall mean the surface area within the impoundment at the maximum capacity plus the area of the inside and outside slopes of the impoundment dam and the surface area between the outside edge of the impoundment dam and seepage ditches upon which rain falls and is returned to the impoundment. For the purpose of such calculations, the surface area allowance for external appurtenances to the impoundment shall not be more than 30 percent of the water surface area within the impoundment dam at maximum capacity.

(e) The term pond water surface area for the purpose of calculating the volume of waste water shall mean the area within the impoundment for rainfall and the actual water surface area for evaporation.

§ 421.12 — 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 control technology currently available:

(a) Subject to the provisions of paragraph (b) of this section, the following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart after application of the best practicable control technology currently available: There shall be no discharge of process waste water pollutants to navigable waters.

(b) During any calendar month there may be discharged from the overflow of a process waste water impoundment either a volume of process waste water equal to the difference between the precipitation for that month that falls within the impoundment and the evaporation within the impoundment for that month, or, if greater, a volume of process waste water equal to the difference between the mean precipitation for that month that falls within the impoundment and the mean evaporation for that month as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located (or as otherwise determined if no monthly data have been established by the National Climatic Center).

§ 421.13 — 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) Subject to the provisions of paragraph (b) of this section, the following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable: There shall be no discharge of process waste water pollutants to navigable waters.

(b) During any calendar month there may be discharged from the overflow of a process waste water impoundment either a volume of process waste water equal to the difference between the precipitation for that month that falls within the impoundment and the evaporation within the impoundment for that month, or, if greater, a volume of process waste water equal to the difference between the mean precipitation for that month that falls within the impoundment and the mean evaporation for that month as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located (or as otherwise determined if no monthly data have been established by the National Climatic Center).

§ 421.14 — [Reserved]

§ 421.15 — Standards of performance for new sources.

(a) Subject to the provisions of paragraph (b) of this section, the following standards of performance establish the quantity or quality of pollutants or pollutant properties which may be discharged by a new source subject to the provisions of this subpart: There shall be no discharge of process waste water pollutants to navigable waters.

(b) During any calendar month there may be discharged from the overflow of a process waste water impoundment either a volume of process waste water equal to the difference between the precipitation for that month that falls within the impoundment and the evaporation within the impoundment for that month, or, if greater, a volume of process waste water equal to the difference between the mean precipitation for that month that falls within the impoundment and the mean evaporation for that month as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located (or as otherwise determined if no monthly data have been established by the National Climatic Center).

§ 421.16 — Pretreatment standards for new sources.

Any new sources subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403.

§ 421.20 — Applicability: description of the primary aluminum smelting subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of aluminum from alumina in the Hall-Heroult process.

§ 421.21 — Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter, shall apply to this subpart.

(b) The term product shall mean hot aluminum metal.

(c) If a permittee chooses to analyze for benzo(a)pyrene using any EPA-approved method, any “non-detected” measurements shall be considered zeroes for the purpose of determining compliance with this regulation.

§ 421.22 — 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 (BPT):

§ 421.23 — 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) Subpart B—Anode and Cathode Paste Plant Wet Air Pollution Control

(b) Subpart (B)—Anode Contact Cooling and Briquette Quenching.

(c) Subpart (B)—Anode Bake Plant Wet Air Pollution Control (Closed Top Ring Furnace).

(d) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Spray Tower Only).

(e) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Wet Electrostatic Precipitator and Spray Tower).

(f) Subpart B—Anode Bake Plant Wet Air Pollution Control (Tunnel Kiln).

(g) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).

(h) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).

(i) Subpart B—Cathode Reprocessing (Operated With Wet Potline Scrubbing).

(j) Subpart B—Potline Wet Air Pollution Control (Operated Without Cathode Reprocessing).

(k) Subpart B—Potline Wet Air Pollution Control (Operated With Cathode Reprocessing and Not Commingled With Other Process or Nonprocess Waters).

(l) Potline Wet Air Pollution Control Cooperated With Cathode Reprocessing and Commingled With Other Process or Nonprocess Wastewaters).

(m) Subpart B—Potroom Wet Air Pollution Control.

(n) Subpart B—Potline SO2 Emissions Wet Air Pollution Control.

(o) Subpart B—Degassing Wet Air Pollution Control.

(p) Subpart B—Pot Repair and Pot Soaking.

(q) Subpart B—Direct Chill Casting Contact Cooling.

(r) Subpart B—Continuous Rod Casting Contact Cooling.

(s) Subpart B—Stationary Casting or Shot Casting Contact Cooling.

§ 421.24 — Standards of performance for new sources.

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

(a) Subpart B—Anode and Cathode Paste Plant Wet Air.

(b) Subpart B—Anode Contact Cooling and Briquette Quenching.

(c) Subpart B—Anode Bake Plant Wet Air Pollution Control.

(d) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).

(e) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).

(f) Subpart B—Potline Wet Air Pollution Control.

(g) Subpart B—Potroom Wet Air Pollution Control.

(h) Subpart B—Potline SO2 Emissions Wet Air Pollution Control.

(i) Subpart B—Degassing Wet Air Pollution Control.

(j) Subpart B—Pot Repair and Pot Soaking.

(k) Subpart B—Direct Chill Casting Contact Cooling.

(l) Subpart B—Continuous Rod Casting Contact Cooling.

(m) Subpart B—Stationary Casting or Shot Casting Contact Cooling.

§ 421.25 — [Reserved]

§ 421.26 — 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 aluminum process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart B—Anode and Cathode Paste Plant Wet Air Pollution Control.

(b) Subpart B—Anode Contact Cooling and Briquette Quenching.

(c) Subpart B—Anode Bake Plant Wet Air Pollution Control.

(d) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Not Commingled With Other Process or Nonprocess Waters).

(e) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).

(f) Subpart B—Potline Wet Air Pollution Control.

(g) Subpart B—Potroom Wet Air Pollution Control.

(h) Subpart B—Potline SO2 Emissions Wet Air Pollution Control.

(i) Subpart B—Degassing Wet Air Pollution Control.

(j) Subpart B—Pot Repair and Pot Soaking.

(k) Subpart B—Direct Chill Casting Contact Cooling.

(l) Subpart B—Continuous Rod Casting Contact Cooling.

(m) Subpart B—Stationary Casting or Shot Casting Contact Cooling.

§ 421.27 — [Reserved]

§ 421.30 — Applicability: Description of the secondary aluminum smelting subcategory.

The provisions of this subpart are applicable to discharges resulting from the recovery, processing, and remelting of aluminum scrap to produce metallic aluminum alloys.

§ 421.31 — Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in part 401 of this chapter shall apply to this subpart.

(b) The term product shall mean hot aluminum metal.

(c) At-the-source means at or before the commingling of delacquering scrubber liquor blowdown with other process or nonprocess wastewaters.

§ 421.32 — 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) The following limitations establish the quantity or quality of pollutants or pollutant properties, which may be discharged by a point source subject to the provisions of this subpart and which uses water for metal cooling, after application of the best practicable control technology currently available: There shall be no discharge of process wastewater pollutants to navigable waters.

(b) The following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart and which uses aluminum fluoride in its magnesium removal process (“demagging process”), after application of the best practicable control technology currently available: There shall be no discharge of process wastewater pollutants to navigable waters.

(c) The following limitations establish the quantity or quality of pollutants or pollutant properties controlled by this section, which may be discharged by a point source subject to the provisions of this subpart and which uses chlorine in its magnesium removal process, after application of the best practicable control technology currently available:

(d) The following limitations establish the quantity or quality of pollutants or pollutant properties which may be discharged by a point source subject to the provisions of this subpart and which processes residues by wet methods, after application of the best practical control technology currently available:

§ 421.33 — 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) Subpart C—Scrap Drying Wet Air Pollution Control.

(b) Subpart C—Scrap Screening and Milling.

(c) Subpart C—Dross Washing.

(d) Subpart C—Demagging Wet Air Pollution Control.

(e) Subpart C—Delacquering Wet Air Pollution Control.

(f) Subpart C—Direct Chill Casting Contact Cooling.

(g) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

(h) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chloride Demagging Wet Air Pollution Control is Practiced On Site).

(i) Subpart C—Stationary Casting Contact Cooling.

(j) Subpart C—Shot Casting Contact Cooling.

§ 421.34 — Standards of performance for new sources.

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

(a) Subpart C—Scrap Drying Wet Air Pollution Control.

(b) Subpart C—Scrap Screening and Milling.

(c) Subpart C—Dross Washing.

(d) Subpart C—Demagging Wet Air Pollution Control.

(e) Subpart C—Delacquering Wet Air Pollution Control.

(f) Subpart C—Direct Chill Casting Contact Cooling.

(g) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

(h) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Practiced On Site).

(i) Subpart C—Stationary Casting Contact Cooling.

(j) Subpart C—Shot Casting Contact Cooling.

§ 421.35 — 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 secondary aluminum process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart C—Scrap Drying Wet Air Pollution Control.

(b) Subpart C—Scrap Screening and Milling.

(c) Subpart C—Dross Washing.

(d) Subpart C—Demagging Wet Air Pollution Control.

(e) Subpart C—Delacquering Wet Air Pollution Control.

(f) Subpart C—Direct Chill Casting Contact Cooling.

(g) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

(h) Subpart C—Ingot Conveyor Casting Contact Cooling. (When Chlorine Demagging Wet Air Pollution Control is Practiced On Site.)

(i) Subpart C—Stationary Casting Contact Cooling.

(j) Subpart C—Shot Casting Contact Cooling.

§ 421.36 — 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 introduced in secondary aluminum process wastewater into a POTW shall not exceed the following values:

(a) Subpart C—Scrap Drying Wet Air Pollution Control.

(b) Subpart C—Scrap Screening and Milling.

(c) Subpart C—Dross Washing.

(d) Subpart C—Demagging Wet Air Pollution Control.

(e) Subpart C—Delacquering Wet Air Pollution Control

(f) Subpart C—Direct Chill Casting Contact Cooling.

(g) Subpart C—Ingot Conveyor Casting Control Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

(h) Subpart C—Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control Is Practiced on Site).

(i) Subpart C—Stationary Casting Contact Cooling.

(j) Subpart C—Shot Casting Contact Cooling.

§ 421.37 — [Reserved]

§ 421.40 — Applicability: Description of the primary copper smelting subcategory.

The provisions of this subpart apply to process wastewater discharges resulting from the primary smelting of copper from ore or ore concentrates. Primary copper smelting includes, but is not limited to, roasting, converting, leaching if preceded by a pyrometallurgical step, slag granulation and dumping, fire refining, and the casting of products from these operations.

§ 421.41 — Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 apply to this subpart.

(b) In the event that the waste streams covered by this subpart are combined for treatment or discharge with waste streams covered by Subparts E—Primary Electrolytic Copper Refining and/or Subpart I—Metallurgical Acid Plants, the quantity of each pollutant or pollutant property discharged shall not exceed the quantity of each pollutant or pollutant property which could be discharged if each waste stream were discharged separately.

(c) For all impoundments constructed prior to the effective date of the interim final regulation (40 FR 8513), the term “within the impoundment,” when used to calculate the volume of process wastewater which may be discharged, means the water surface area within the impoundment at maximum capacity plus the surface area of the inside and outside slopes of the impoundment dam as well as the surface area between the outside edge of the impoundment dam and any seepage ditch adjacent to the dam upon which rain falls and is returned to the impoundment. For the purpose of such calculations, the surface area allowances set forth above shall not exceed more than 30 percent of the water surface area within the impoundment dam at maximum capacity.

(d) For all impoundments constructed on or after the effective date of the interim final regulation (the interim regulation was effective February 27, 1975; 40 FR 8513, February 27, 1975), the term “within the impoundment,” for purposes of calculating the volume of process wastewater which may be discharged, means the water surface area within the impoundment at maximum capacity.

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

(a) Except as provided in 40 CFR 125.30 through 125.32 and paragraph (b) of this section, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT): There shall be no discharge of process wastewater pollutants to navigable waters.

(b) A process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 10-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located may discharge that volume of process wastewater which is equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 10-year, 24-hour rainfall event, when such event occurs.

§ 421.43 — 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) Subject to the provisions of paragraph (b) of this section, there shall be no discharge of process wastewater pollutants into navigable waters.

(b) A process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 25-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located may discharge that volume of process wastewater which is equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 25-year, 24-hour rainfall event, when such event occurs.

§ 421.44 — Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards: There shall be discharge of process wastewater pollutants into navigable waters.

§ 421.45 — [Reserved]

§ 421.46 — 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 copper smelting process wastewater introduced into a POTW shall not exceed the following values: There shall be no discharge of process wastewater pollutants into a publicly owned treatment works.

§ 421.47 — [Reserved]

§ 421.50 — Applicability: Description of the primary electrolytic copper refining subcategory.

The provisions of this subpart apply to process wastewater discharges resulting from the electrolytic refining of primary copper, including, but not limited to, anode casting performed at refineries which are not located on-site with a smelter, product casting, and by-product recovery.

§ 421.51 — Specialized definitions.

For the purpose of this subpart:

(a) Except as provided below, the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 apply to this subpart.

(b) The term product means electrolytically refined copper.

§ 421.52 — 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 must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

§ 421.53 — 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) Subpart E—Casting Contact Cooling.

(b) Subpart E—Anode and Cathode Rinse.

(c) Subpart E—Spent Electrolyte.

(d) Subpart E—Casting Wet Air Pollution Control.

(e) Subpart E—By-Product Recovery.

§ 421.54 — Standards of performance for new sources.

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

(a) Subpart E—Casting Contact Cooling.

(b) Subpart E—Anode and Cathode Rinse.

(c) Subpart E—Spent Electrolyte.

(d) Subpart E—Casting Wet Air Pollution Control.

(e) Subpart E—By-Product Recovery.

§ 421.55 — [Reserved]

§ 421.56 — 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 electrolytic copper refining process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart E—Casting Contact Cooling.

(b) Subpart E—Anode and Cathode Rinse.

(c) Subpart E—Spent Electrolyte.

(d) Subpart E—Casting Wet Air Pollution Control.

(e) Subpart E—By-Product Recovery.

§ 421.57 — [Reserved]

§ 421.60 — Applicability: Description of the secondary copper subcategory.

The provisions of this subpart are applicable to discharges resulting from the recovery, processing, and remelting of new and used copper scrap and residues to produce copper metal and copper alloys, but are not applicable to continuous rod casting.

§ 421.61 — Specialized definitions.

For the purpose of this subpart:

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

(b) For all impoundments constructed prior to the effective date of this regulation the term “within the impoundment” when used for purposes of calculating the volume of process wastewater which may be discharged shall mean the water surface area within the impoundment at maximum capacity plus the surface area of the inside and outside slopes of the impoundment dam as well as the surface area between the outside edge of the impoundment dam and any seepage ditch immediately adjacent to the dam upon which rain falls and is returned to the impoundment. For the purpose of such calculations, the surface area allowances set forth above shall not be more than 30 percent of the water surface area within the impoundment dam at maximum capacity.

(c) For all impoundments constructed on or after the effective date of this regulation, the term “within the impoundment” for purposes of calculating the volume of process wastewater which may be discharged shall mean the water surface area within the impoundment at maximum capacity.

(d) The term pond water surface area when used for the purpose of calculating the volume of wastewater which may be discharged shall mean the water surface area of the pond created by the impoundment for storage of process wastewater at normal operating level. This surface shall in no case be less than one-third of the surface area of the maximum amount of water which could be contained by the impoundment. The normal operating level shall be the average level of the pond during the preceding calendar month.

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

(a) 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: Subject to the provisions of paragraphs (b), (c), and (d) of this section, there shall be no discharge of process wastewater pollutants into navigable waters.

(b) A process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 10-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration for the areas in which such impoundment is located may discharge that volume of process wastewater which is equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 10-year, 24-hour rainfall event, when such event occurs.

(c) During any calendar month there may be discharged from a process wastewater impoundment either a volume of process wastewater equal to the difference between the precipitation for the month that falls within the impoundment and either the evaporation from the pond water surface area for that month, or a volume of process wastewater equal to the difference between the mean precipitation for that month that falls within the impoundment and the mean evaporation from the pond water surface area as establsihed by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located (or as otherwise determined if no monthly data have been established by the National Climatic Center), whichever is greater.

(d) Any process wastewater discharged pursuant to paragraph (c) of this section shall comply with each of the following requirements:

§ 421.63 — 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) Subject to the provisions of paragraph (b) of this section, there shall be no discharge of process wastewater pollutants into navigable waters.

(b) a process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 25-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located may discharge that volume of process wastewater which is equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 25-year, 24-hour rainfall event, when such event occurs.

§ 421.64 — Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards: There shall be no discharge of process wastewater pollutants into navigable waters.

§ 421.65 — 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 secondary copper process wastewater introduced into a POTW shall not exceed the following values:

(a) There shall be no discharge of process wastewater pollutants into a publicly owned treatment works subject to the provisions of paragraph (b) of this section.

(b) A process wastewater impoundment which is designed, constructed, and operated so as to contain the precipitation from the 25-year, 24-hour rainfall event as established by the National Climatic Center, National Oceanic and Atmospheric Administration, for the area in which such impoundment is located may discharge that volume of process wastewater equivalent to the volume of precipitation that falls within the impoundment in excess of that attributable to the 25-year, 24-hour rainfall event, when such event occurs.

§ 421.66 — 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 secondary copper process wastewater introduced into a POTW shall not exceed the following values: There shall be no discharge of process wastewater pollutants into a publicly owned treatment works.

§ 421.67 — [Reserved]

§ 421.70 — Applicability: Description of the primary lead subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of lead at primary lead smelters and refineries.

§ 421.71 — 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.

§ 421.72 — 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 control technology currently available:

(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

(c) Subpart G—Blast Furnace Slag Granulation.

(d) Subpart G—Dross Reverberatory Slag Granulation.

(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

(g) Subpart G—Hard Lead Refining Slag Granulation.

(h) Subpart G—Hard Lead Refining Air Pollution Control.

(i) Subpart G—Facility Washdown.

(j) Subpart G—Employee Handwash.

(k) Subpart G—Respirator Wash.

(l) Subpart G—Laundering of Uniforms.

§ 421.73 — 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) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

(c) Subpart G—Blast Furnace Slag Granulation.

(d) Subpart G—Dross Reverberatory Slag Granulation.

(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

(g) Subpart G—Hard Lead Refining Slag Granulation.

(h) Subpart G—Hard Lead Refining Wet Air Pollution Control.

(i) Subpart G—Facility Washdown.

(j) Subpart G—Employee Handwash.

(k) Subpart G—Respirator Wash.

(l) Subpart G—Laundering of Uniforms.

§ 421.74 — Standards of performance for new sources.

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

(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

(c) Subpart G—Blast Furnace Slag Granulation.

(d) Subpart G—Dross Reverberatory Slag Granulation.

(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

(g) Subpart G—Hard Lead Refining Slag Granulation.

(h) Subpart G—Hard Lead Refining Wet Air Pollution Control.

(i) Subpart G—Facility Washdown.

(j) Subpart G—Employee Handwash.

(k) Subpart G—Respirator Wash.

(l) Subpart G—Laundering of Uniforms.

§ 421.75 — 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 mut comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in primary lead process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

(c) Subpart G—Blast Furnace Slag Granulation.

(d) Subpart G—Dross Reverberatory Slag Granulation.

(e) Subpart G—Dross Reverberatory Furnance Wet Air Pollution Control.

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

(g) Subpart G—Hard Lead Refining Slag Granulation.

(h) Subpart G—Hard Lead Refining Wet Air Pollution Control.

(i) Subpart G—Facility Washdown.

(j) Subpart G—Employee Handwash.

(k) Subpart G—Respirator Wash.

(l) Subpart G—Laundering of Uniforms.

§ 421.76 — 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 lead process wastewaters introduced into a POTW shall not exceed the following values.

(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.

(b) Subpart G—Blast Furnace Wet Air Pollution Control.

(c) Subpart G—Blast Furnace Slag Granulation.

(d) Subpart G—Dross Reverberatory Slag Granulation.

(e) Subpart G—Dross Reverberatory Furnace Wet Air Pollution Control.

(f) Subpart G—Zinc Fuming Wet Air Pollution Control.

(g) Subpart G—Hard Lead Refining Slag Granulation.

(h) Subpart G—Hard Lead Refining Wet Air Pollution Control.

(i) Subpart G—Facility Washdown.

(j) Subpart G—Employee Handwash.

(k) Subpart G—Respirator Wash.

(l) Subpart G—Laundering of Uniforms.

§ 421.77 — [Reserved]

§ 421.80 — Applicability: Description of the primary zinc subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of primary zinc by either electrolytic or pyrolytic means.

§ 421.81 — Specialized definitions.

For the purpose of this subpart:

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

(b) The term product shall mean zinc metal.

§ 421.82 — 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:

§ 421.83 — 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) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.

(b) Subpart H—Preleach of Zinc Concentrates.

(c) Subpart H—Leaching Wet Air Pollution Control.

(d) Subpart H—Electrolyte Bleed Wastewater.

(e) Subpart H—Cathode and Anode Wash Wastewater.

(f) Subpart H—Casting Wet Air Pollution Control.

(g) Subpart H—Casting Contact Cooling.

(h) Subpart H—Cadmium Plant Wastewater.

§ 421.84 — Standards of performance for new sources.

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

(a) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.

(b) Subpart H—Preleach of Zinc Concentrates.

(c) Subpart H—Leaching Wet Air Pollution Control.

(d) Subpart H—Electrolyte Bleed Wastewater.

(e) Subpart H—Cathode and Anode Wash Wastewater.

(f) Subpart H—Casting Wet Air Pollution Control.

(g) Subpart H—Casting Contact Cooling.

(h) Subpart H—Cadmium Plant Wastewater.

§ 421.85 — 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 zinc process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.

(b) Subpart H—Preleach of Zinc Concentrates.

(c) Subpart H—Leaching Wet Air Pollution Control.

(d) Subpart H—Electrolyte Bleed Wastewater.

(e) Subpart H—Cathode and Anode Wash Wastewater.

(f) Subpart H—Casting Wet Air Pollution Control.

(g) Subpart H—Casting Contact Cooling.

(h) Subpart H—Cadmium Plant Wastewater.

§ 421.86 — 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 zinc process wastewaters introduced into a POTW shall not exceed the following values:

(a) Subpart H—Zinc Reduction Furnace Wet Air Pollution Control.

(b) Subpart H—Preleach of Zinc Concentrates.

(c) Subpart H—Leaching Wet Air Pollution Control.

(d) Subpart H—Electrolyte Bleed Wastewater.

(e) Subpart H—Cathode and Anode Wash Wastewater.

(f) Subpart H—Casting Wet Air Pollution Control.

(g) Subpart H—Casting Contact Cooling.

(h) Subpart H—Cadmium Plant Wastewater.

§ 421.87 — [Reserved]

§ 421.90 — Applicability: Description of the metallurgical acid plants subcategory.

The provisions of this subpart apply to process wastewater discharges resulting from or associated with the manufacture of by-product sulfuric acid at primary copper smelters, primary zinc facilities, primary lead facilities, and primary molybdenum facilities, including any associated air pollution control or gas-conditioning systems for sulfur dioxide off-gases from pyrometallurgical operations.

§ 421.91 — Specialized definitions.

(a) Except as provided below, the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 apply to this subpart.

(b) The term product means 100 percent equivalent sulfuric acid, H2 SO4 capacity.

§ 421.92 — 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 must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

§ 421.93 — 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:

§ 421.94 — Standards of performance for new sources.

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

§ 421.95 — 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 metallurgical acid plant blowdown introduced into a POTW shall not exceed the following values:

§ 421.96 — 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 metallurgical acid plant blowdown introduced into a POTW shall not exceed the following values:

§ 421.97 — [Reserved]

§ 421.100 — Applicability: Description of the primary tungsten subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of tungsten at primary tungsten facilities.

§ 421.101 — Specialized definitions.

For the purpose of this subpart the general information, abbreviations, and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.

§ 421.102 — 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) Subpart J—Tungstic Acid Rinse.

(b) Subpart J—Acid Leach Wet Air Pollution Control.

(c) Subpart J—Alkali Leach Wash.

(d) Subpart J—Alkali Leach Wash Condensate.

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

(g) Subpart J—Calcium Tungstate Precipitate Wash.

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

(k) Subpart J—Reduction to Tungsten Wet Air Pollution Control.

(l) Subpart J—Reduction to Tungsten Water of Formation.

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

(n) Subpart J—Molybdenum Sulfide Precipitation Wet Air Pollution Control.

§ 421.103 — 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) Subpart J—Tungstic Acid Rinse.

(b) Subpart J—Acid Leach Wet Air Pollution Control.

(c) Subpart J—Alkali Leach Wash.

(d) Subpart J—Alkali Leach Wash Condensate.

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

(g) Subpart J—Calcium Tungstate Precipitate Wash.

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

(k) Subpart J—Reduction to Tungsten Wet Air Pollution Control.

(l) Subpart J—Reduction to Tungsten Water of Formation.

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

(n) Subpart J—Molybdenum Sulfide Precipitation Wet Air Pollution Control.

§ 421.104 — Standards of performance for new sources.

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

(a) Subpart J—Tungstic Acid Rinse.

(b) Subpart J—Acid Leach Wet Air Pollution

(c) Subpart J—Alkali Leach Wash.

(d) Subpart J—Alkali Leach Wash Condensate.

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

(g) Subpart J—Calcium Tungstate Precipitate Wash.

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

(k) Subpart J—Reduction to Tungsten Wet Air Pollution Control.

(l) Subpart J—Reduction to Tungsten Water of Formation.

(m) Subpart J—Tungsten Power Acid Leach and Wash.

(n) Subpart J—Molybdenum Sulfide Precipitation Wet Air Pollution Control.

§ 421.105 — 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 tungsten process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart J—Tungstic Acid Rinse.

(b) Subpart J—Acid Leach Wet Air Pollution Control.

(c) Subpart J—Alkali Leach Wash.

(d) Subpart J—Alkali Leach Wash Condensate.

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

(g) Subpart J—Calcium Tungstate Precipitate Wash.

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

(k) Subpart J—Reduction to Tungsten Wet Air Pollution Control.

(l) Subpart J—Reduction to Tungsten Water of Formation.

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

(n) Subpart J—Molybdenum Sulfide Precipitation Wet Air Pollution Control.

§ 421.106 — 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 tungsten process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart J—Tungstic Acid Rinse.

(b) Subpart J—Acid Leach Wet Air Pollution Control.

(c) Subpart J—Alkali Leach Wash.

(d) Subpart J—Alkali Leach Wash Condensate.

(e) Subpart J—Ion Exchange Raffinate (Commingled With Other Process or Nonprocess Waters).

(f) Subpart J—Ion Exchange Raffinate (Not Commingled With Other Process or Nonprocess Waters).

(g) Subpart J—Calcium Tungstate Precipitate Wash.

(h) Subpart J—Crystallization and Drying of Ammonium Paratungstate.

(i) Subpart J—Ammonium Paratungstate Conversion to Oxides Wet Air Pollution Control.

(j) Subpart J—Ammonium Paratungstate Conversion to Oxides Water of Formation.

(k) Subpart J—Reduction to Tungsten Wet Air Pollution Control.

(l) Subpart J—Reduction to Tungsten Water of Formation.

(m) Subpart J—Tungsten Powder Acid Leach and Wash.

(n) Subpart J—Molybdenum Sulfide Precipitation Wet Air Pollution Control.

§ 421.107 — [Reserved]

§ 421.110 — Applicability: Description of the primary columbium-tantalum subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of columbium or tantalum by primary columbium-tantalum facilities.

§ 421.111 — 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.

§ 421.112 — 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) Subpart K—Concentrate Digestion Wet Air Pollution Control.

(b) Subpart K—Solvent Extraction Raffinate.

(c) Subpart K—Solvent Extraction Wet Air Pollution Control.

(d) Subpart K—Precipitation and Filtration.

(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.

(f) Subpart K—Tantalum Salt Drying.

(g) Subpart K—Oxides Calcining Wet Air Pollution Control.

(h) Subpart K—Reduction of Tantalum Salt to Metal.

(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.

(j) Subpart K—Tantalum Powder Wash.

(k) Subpart K—Consolidation and Casting Contact Cooling.

§ 421.113 — 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) Subpart K—Concentrate Digestion Wet Air Pollution Control.

(b) Subpart K—Solvent Extraction Raffinate.

(c) Subpart K—Solvent Extraction Wet Air Pollution Control.

(d) Subpart K—Precipitation and Filtration.

(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.

(f) Subpart K—Tantalum Salt Drying.

(g) Subpart K—Oxides Calcining Wet Air Pollution Control.

(h) Subpart K—Reduction of Tantalum Salt to Metal.

(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.

(j) Subpart K—Tantalum Powder Wash.

(k) Subpart K—Consolidation and Casting Contact Cooling.

§ 421.114 — Standards of performance for new sources.

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

(a) Subpart K—Concentrate Digestion Wet Air Pollution Control.

(b) Subpart K—Solvent Extraction Raffinate.

(c) Subpart K—Solvent Extraction Wet Air Pollution Control.

(d) Subpart K—Precipitation and Filtration.

(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.

(f) Subpart K—Tantalum Salt Drying.

(g) Subpart K—Oxides Calcining Wet Air Pollution Control.

(h) Subpart K—Reduction of Tantalum Salt to Metal.

(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.

(j) Subpart K—Tantalum Powder Wash.

(k) Subpart K—Consolidation and Casting Contact Cooling.

§ 421.115 — 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 columbium-tantalum process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart K—Concentrate Digestion Wet Air Pollution Control.

(b) Subpart K—Solvent Extraction Raffinate.

(c) Subpart K—Solvent Extraction Wet Air Pollution Control.

(d) Subpart K—Precipitation and Filtration.

(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.

(f) Subpart K—Tantalum Salt Drying.

(g) Subpart K—Oxides Calcining Wet Air Pollution Control.

(h) Subpart K—Reduction of Tantalum Salt to Metal.

(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.

(j) Subpart K—Tantalum Powder Wash.

(k) Subpart K—Consolidation and Casting Contact Cooling.

§ 421.116 — 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 columbium-tantalum process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart K—Concentrate Digestion Wet Air Pollution Control.

(b) Subpart K—Solvent Extraction Raffinate.

(c) Subpart K—Solvent Extraction Wet Air Pollution Control.

(d) Subpart K—Precipitation and Filtration.

(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.

(f) Subpart K—Tantalum Salt Drying.

(g) Subpart K—Oxides Calcining Wet Air Pollution Control.

(h) Subpart K—Reduction of Tantalum Salt to Metal.

(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.

(j) Subpart K—Tantalum Powder Wash.

(k) Subpart K—Consolidation and Casting Contact Cooling.

§ 421.117 — [Reserved]

§ 421.120 — Applicability: Description of the secondary silver subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of silver from secondary silver facilities processing photographic and nonphotographic raw materials.

§ 421.121 — 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.

§ 421.122 — 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) Subpart L—Film Stripping.

(b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control.

(c) Subpart L—Precipitation and Filtration of Film Stripping Solutions.

(d) Subpart L—Precipitation and Filtration of Photographic Solutions.

(e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control.

(f) Subpart L—Electrolytic Refining.

(g) Subpart L—Furnace Wet Air Pollution Control.

(h) Subpart L—Leaching.

(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.

(j) Subpart L—Precipitation and Filtration of Nonphotographic Solutions.

(k) Subpart L—Floor and Equipment Washdown.

§ 421.123 — 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) Subpart L—Film Stripping.

(b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control.

(c) Subpart L—Precipitation and Filtration of Film Stripping Solutions.

(d) Subpart L—Precipitation and Filtration of Photographic Solutions.

(e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control.

(f) Subpart L—Electrolytic Refining.

(g) Subpart L—Furnace Wet Air Pollution Control.

(h) Subpart L—Leaching.

(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.

(j) Subpart L—Precipitation and Filtration of Nonphotographic Solutions.

(k) Subpart L—Floor and Equipment Washdown.

§ 421.124 — Standards of performance for new sources.

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

(a) Subpart L—Film Stripping.

(b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control.

(c) Subpart L—Precipitation and Filtration of Film Stripping Solutions.

(d) Subpart L—Precipitation and Filtration of Photographic Solutions.

(e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control.

(f) Subpart L—Electrolytic Refining.

(g) Subpart L—Furnace Wet Air Pollution Control.

(h) Subpart L—Leaching.

(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.

(j) Subpart L—Precipitation and Filtration of Nonphotograhic Solutions.

(k) Subpart L—Floor and Equipment Washdown.

§ 421.125 — 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 secondary silver process wastewater introduced into a POTW must not exceed the following values.

(a) Subpart L—Film Stripping.

(b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control.

(c) Subpart L—Precipitation and Filtration of Film Stripping Solutions.

(d) Subpart L—Precipitation and Filtration of Photographic Solutions.

(e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control.

(f) Subpart L—Electrolytic Refining.

(g) Subpart L—Furnace Wet Air Pollution Control.

(h) Subpart L—Leaching.

(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.

(j) Subpart L—Precipitation and Filtration of Nonphotographic Solutions.

(k) Subpart L—Floor and Equipment Washdown.

§ 421.126 — 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 secondary silver process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart L—Film Stripping.

(b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control.

(c) Subpart L—Precipitation and Filtration of Film Stripping Solutions.

(d) Subpart L—Precipitation and Filtration of Photographic Solutions.

(e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control.

(f) Subpart L—Electrolytic Refining.

(g) Subpart L—Furnace Wet Air Pollution Control.

(h) Subpart L—Leaching.

(i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control.

(j) Subpart L—Precipitation and Filtration of Nonphotographic Solutions.

(k) Subpart L—Floor and Equipment Washdown.

§ 421.127 — [Reserved]

§ 421.130 — Applicability: Description of the secondary lead subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of lead by secondary lead facilities.

§ 421.131 — 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.

§ 421.132 — 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) Subpart M—Battery Cracking

(b) Subpart M—Blast, Reverberatory, or Rotary Furnace Wet Air Pollution Control

(c) Subpart M—Kettle Wet Air Pollution Control

(d) Subpart M—Lead Paste Desulfurization

(e) Subpart M—Casting Contact Cooling

(f) Subpart M—Truck Wash.

(g) Subpart M—Facility Washdown

(h) Subpart M—Battery Case Classification.

(i) Subpart M—Employee Handwash.

(j) Subpart M—Employee Respirator Wash.

(k) Subpart M—Laundering of Uniforms.

§ 421.133 — 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) Subpart M—Battery Cracking.

(b) Subpart M—Blast, Reverberatory, or Rotary Furnace Wet Air Pollution Control.

(c) Subpart M—Kettle Wet Air Pollution Control.

(d) Subpart M—Lead Paste Desulfurization.

(e) Subpart M—Casting Contact Cooling.

(f) Subpart M—Truck Wash.

(g) Subpart M—Facility Washdown.

(h) Subpart M—Battery Case Classification.

(i) Subpart M—Employee Handwash.

(j) Subpart M—Employee Respirator Wash.

(k) Subpart M—Laundering of Uniforms.

§ 421.134 — Standards of performance for new sources.

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

(a) Subpart M—Battery Cracking.

(b) Subpart M—Blast, Reverberatory, or Rotary Furnace Wet Air Pollution Control.

(c) Subpart M—Kettle Wet Air Pollution Control.

(d) Subpart M—Lead Paste Desulfurization.

(e) Subpart M—Casting Contact Cooling.

(f) Subpart M—Truck Wash.

(g) Subpart M—Facility Washdown.

(h) Subpart M—Battery Case Classification.

(i) Subpart M—Employee Handwash.

(j) Subpart M—Employee Respirator Wash.

(k) Subpart M—Laundering of Uniforms.

§ 421.135 — 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 secondary lead process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart M—Battery Cracking.

(b) Subpart M—Blast, Reverberatory, or Rotary Furnace Wet Air Pollution Control.

(c) Subpart M—Kettle Wet Air Pollution Control.

(d) Subpart M—Lead Paste Desulfurization.

(e) Subpart M—Casting Contact Cooling.

(f) Subpart M—Truck Wash.

(g) Subpart M—Facility Washdown.

(h) Subpart M—Battery Case Classification.

(i) Subpart M—Employee Handwash.

(j) Subpart M—Employee Respirator Wash.

(k) Subpart M—Laundering of Uniforms.

§ 421.136 — 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 secondary lead process wastewater introduced into a POTW shall not exceed the following values:

(a) Subpart M—Battery Cracking.

(b) Subpart M—Blast, Reverberatory, or Rotary Furnace Wet Air Pollution Control.

(c) Subpart M—Kettle Wet Air Pollution Control.

(d) Subpart M—Lead Paste Desulfurization.

(e) Subpart M—Casting Contact Cooling.

(f) Subpart M—Truck Wash.

(g) Subpart M—Facility Washdown.

(h) Subpart M—Battery Case Classification.

(i) Subpart M—Employee Handwash.

(j) Subpart M—Employee Respirator Wash.

(k) Subpart M—Laundering of Uniforms.

§ 421.137 — [Reserved]

§ 421.140 — Applicability: Description of the primary antimony subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of antimony at primary antimony facilities.

§ 421.141 — 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.

§ 421.142 — 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 control technology currently available:

(a) Sodium Antimonate Autoclave Wastewater.

(b) Fouled anolyte.

(c) Cathode Antimony Wash Water.

§ 421.143 — 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) Sodium Antimonate Autoclave Wastewater.

(b) Fouled Anolyte.

(c) Cathode Antimony Wash Water

§ 421.144 — Standards of performance for new sources.

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

(a) Sodium Antimonate Autoclave Wastewater.

(b) Fouled Anolyte.

(c) Cathode Antimony Wash Water.

§ 421.145 — [Reserved]

§ 421.146 — 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 antimony process wastewater introduced into a POTW shall not exceed the following values:

(a) Sodium Antimonate Autoclave Wastewater.

(b) Fouled Anolyte.

(c) Cathode Antimony Washwater.

§ 421.147 — [Reserved]

§ 421.150 — Applicability: Description of the primary beryllium subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of beryllium by primary beryllium facilities processing beryllium ore concentrates or beryllium hydroxide raw materials.

§ 421.151 — 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.

§ 421.152 — 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) Solvent Extraction Raffinate from Bertrandite Ore.

(b) Solvent Extraction Raffinate from Beryl Ore.

(c) Beryllium Carbonate Filtrate.

(d) Beryllium Hydroxide Filtrate.

(e) Beryllium Oxide Calcining Furnace Wet Air Pollution Control.

(f) Beryllium hydroxide supernatant.

(g) Process water.

(h) Fluoride furnace scrubber.

(i) Chip treatment wastewater.

(j) Beryllium Pebble Plant Area Vent Wet Air Pollution Control.

(k) Beryl Ore Gangue Dewatering.

(l) Bertrandite Ore Gangue Dewatering.

(m) Beryl Ore Processing.

(n) Aluminum Iron Sludge (AIS) Area Wastewater.

(o) Bertrandite Ore Leaching Scrubber.

(p) Bertrandite Ore Countercurrent and Decantation (CCD) Scrubber.

§ 421.153 — 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) Solvent extraction raffinate from bertrandite ore.

(b) Solvent extraction raffinate from beryl ore.

(c) Beryllium carbonate filtrate.

(d) Beryllium Hydroxide Filtrate.

(e) Beryllium oxide calcining furnace wet air pollution control.

(f) Beryllium hydroxide supernatant.

(g) Process water.

(h) Fluoride furnace scrubber.

(i) Chip treatment wastewater.

(j) Beryllium pebble plant area vent wet air pollution control.

(k) Beryl Ore Gangue Dewatering.

(l) Bertrandite Ore Gangue Dewatering.

(m) Beryl Ore Processing.

(n) Alumium Iron Sludge (AIS) Area Wastewater.

(o) Bertrandite Ore Leaching Scrubber.

(p) Bertrandite Ore Countercurrent and Decantation (CCD) Scrubber.

§ 421.154 — Standards of performance for new sources.

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

(a) Solvent extraction raffinate from bertrandite ore.

(b) Solvent extraction raffinate from beryl ore.

(c) Beryllium carbonate filtrate.

(d) Beryllium hydroxide filtrate.

(e) Beryllium oxide calcining furnace wet air pollution control.

(f) Beryllium hydroxide supernatant.

(g) Process water.

(h) Fluoride furnace scrubber.

(i) Chip treatment wastewater.

(j) Beryllium pebble plant area vent wet air pollution control.

(k) Beryl Ore Gangue Dewatering.

(l) Bertrandite Ore Gangue Dewatering.

(m) Beryl Ore Processing.

(n) Aluminum Iron Sludge (AIS) Area Wastewater.

(o) Bertrandite Ore Leaching Scrubber.

(p) Bertrandite Ore Countercurrent and Decantation (CCD) Scrubber.

§ 421.155 — [Reserved]

§ 421.156 — 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 beryllium process wastewater introduced into a POTW shall not exceed the following values:

(a) Solvent extraction raffinate from bertrandite ore.

(b) Solvent extraction raffinate from beryl ore.

(c) Beryllium carbonate filtrate.

(d) Beryllium Hydroxide Filtrate.

(e) Beryllium oxide calcining furnace wet air pollution control.

(f) Beryllium hydroxide supernatant

(g) Process water.

(h) Fluoride furnace scrubber.

(i) Chip treatment wastewater.

(j) Beryllium pebble plant area vent wet air pollution control

(k) Beryl Ore Gangue Dewatering.

(l) Bertrandite Ore Gangue Dewatering.

(m) Beryl Ore Processing.

(n) Aluminum Iron Sludge (AIS) Area Wastewater.

(o) Bertrandite Ore Leaching Scrubber.

(p) Bertrandite Ore Countercurrent and Decantation (CCD) Scrubber.

§ 421.157 — [Reserved]

§ 421.180 — Applicability: Description of the primary and secondary germanium and gallium subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of germanium or gallium from primary and secondary germanium and gallium facilities.

§ 421.181 — 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.

§ 421.182 — 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) Still liquor.

(b) Chlorinator wet air pollution control.

(c) Germanium hydrolysis filtrate.

(d) Acid wash and rinse water.

(e) Gallium hydrolysis filtrate.

(f) Solvent extraction raffinate.

§ 421.183 — 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) Still liquor.

(b) Chlorinator wet air pollution control.

(c) Germanium hydrolysis filtrate.

(d) Acid wash and rinse water.

(e) Gallium hydrolysis filtrate.

(f) Solvent extraction raffinate.

§ 421.184 — Standards of performance for new sources.

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

(a) Still liquor.

(b) Chlorinator wet air pollution control.

(c) Germanium hydrolysis filtrate.

(d) Acid wash and rinse water.

(e) Gallium hydrolysis filtrate.

(f) Solvent extraction raffinate.

§ 421.185 — 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 germanium and gallium process wastewater introduced into a POTW must not exceed the following values:

(a) Still liquor.

(b) Chlorinator wet air pollution control.

(c) Germanium hydrolysis filtrate.

(d) Acid wash and rinse water.

(e) Gallium hydrolysis filtrate.

(f) Solvent extraction raffinate.

§ 421.186 — 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 germanium and gallium process wastewater introduced into a POTW shall not exceed the following values:

(a) Still Liquor.

(b) Chlorinator Wet Air Pollution Control.

(c) Germanium Hydrolysis Filtrate.

(d) Acid Wash and Rinse Water.

(e) Gallium Hydrolysis Filtrate.

(f) Solvent Extraction Raffinate.

§ 421.187 — [Reserved]

§ 421.190 — Applicability: Description of the secondary indium subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of indium at secondary indium facilities processing spent electrolyte solutions and scrap indium metal raw materials.

§ 421.191 — 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.

§ 421.192-421.193 — 421.192-421.193 [Reserved]

§ 421.194 — Standards of performance for new sources.

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

(a) Displacement Supernatant.

(b) Spent Electrolyte.

§ 421.195 — 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 secondary indium process wastewater introduced into a POTW must not exceed the following values:

(a) Displacement Supernatant.

(b) Spent Electrolyte.

§ 421.196 — 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 secondary indium process wastewater introduced into a POTW should not exceed the following values:

(a) Displacement Supernatant.

(b) Spent Electrolyte.

§ 421.197 — [Reserved]

§ 421.200 — Applicability: Description of the secondary mercury subcategory.

The provision of this subpart are applicable to discharges resulting from the production of mercury from secondary mercury facilities processing recycled mercuric oxide batteries and other mercury containing scrap raw materials.

§ 421.201 — 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.

§ 421.202-421.203 — 421.202-421.203 [Reserved]

§ 421.204 — Standards of performance for new sources.

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

(a) Spent battery electrolyte.

(b) Acid wash and rinse water.

(c) Furnace wet air pollution control.

§ 421.205 — [Reserved]

§ 421.206 — 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 secondary mercury process wastewater introduced into a POTW shall not exceed the following values:

(a) Spent battery electrolyte.

(b) Acid wash and rinse water.

(c) Furnance wet air pollution control.

§ 421.207 — [Reserved]

§ 421.210 — Applicability: Description of the primary molybdenum and rhenium subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of molybdenum and rhenium facilities.

§ 421.211 — 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.

§ 421.212 — 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 limitation representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:

(a) Molybdenum sulfide leachate.

(b) Roaster SO2 scrubber.

(c) Molybdic oxide leachate.

(d) Hydrogen reduction furnace scrubber.

(e) Depleted rhenium scrubbing solution.

§ 421.213 — 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) Molybdenum sulfide leachate.

(b) Roaster SO2 scrubber.

(c) Molybdic oxide leachate.

(d) Hydrogen reduction furnace scrubber.

(e) Depleted rhenium scrubbing solution.

§ 421.214 — Standards of performance for new sources.

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

(a) Molybdenum sulfide leachate.

(b) Roaster SO2 scrubber.

(c) Molybdic oxide leachate.

(d) Hydrogen reduction furnace scrubber.

(e) Depleted rhenium scrubbing solution.

§ 421.215 — [Reserved]

§ 421.216 — 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 molybdenum and rhenium process wastewater introduced into a POTW shall not exceed the following values:

(a) Molybdenum sulfide leachate.

(b) Roaster SO2 scrubber.

(c) Molybdic oxide leachate.

(d) Hydrogen reduction furnace scrubber.

(e) Depleted rhenium scrubbing solution.

§ 421.217 — [Reserved]

§ 421.220 — Applicability: Description of the secondary molybdenum and vanadium subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of molybdenum or vanadium by secondary molybdenum and vanadium facilities.

§ 421.221 — 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.

§ 421.222 — 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) Leach tailings.

(b) Molybdenum filtrate solvent extraction raffinate.

(c) Vanadium decomposition wet air pollution control.

(d) Molybdenum drying wet air pollution control.

(e) Pure Grade Molybdenum.

§ 421.223 — 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) Leach Tailings.

(b) Molybdenum filtrate solvent extraction raffinate.

(c) Vanadium decomposition wet air pollution control.

(d) Molybdenum drying wet air pollution control.

(e) Pure Grade Molybdenum.

§ 421.224 — Standards of performance for new sources.

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

(a) Leach tailings.

(b) Molybdenum filtrate solvent extraction raffinate.

(c) Vanadium decomposition wet air pollution control.

(d) Molybdenum drying wet air pollution control.

(e) Pure Grade Molybdenum.

§ 421.225 — [Reserved]

§ 421.226 — 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 secondary molybdenum and vanadium process wastewater introduced into a POTW shall not exceed the following values:

(a) Leach tailings.

(b) Molybdenum filtrate solvent extraction raffinate.

(c) Vanadium decomposition wet air pollution control.

(d) Molybdenum drying wet air pollution control.

(e) Pure Grade Molybdenum.

§ 421.227 — [Reserved]

§ 421.230 — Applicability: Description of the primary nickel and cobalt subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of nickel or cobalt by primary nickel and cobalt facilities processing ore concentrate raw materials.

§ 421.231 — 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.

§ 421.232 — 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) Raw Material dust control.

(b) Nickel wash water.

(c) Nickel reduction decant.

(d) Cobalt reduction decant.

§ 421.233 — 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) Raw material dust control.

(b) Nickel wash water.

(c) Nickel reduction decant.

(d) Cobalt reduction decant.

§ 421.234 — Standards of performance for new sources.

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

(a) Raw Material Dust Control.

(b) Nickel wash water.

(c) Nickel reduction decant.

(d) Cobalt reduction decant.

§ 421.235 — [Reserved]

§ 421.236 — 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 a 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary nickel and cobalt process wastewater introduced into a POTW shall not exceed the following values:

(a) Raw material dust control.

(b) Nickel wash water.

(c) Nickel reduction decant.

(d) Cobalt reduction decant.

§ 421.237 — [Reserved]

§ 421.240 — Applicability: Description of the secondary nickel subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of nickel by secondary nickel facilities processing slag, spent acids, or scrap metal raw materials.

§ 421.241 — Specialized definitions.

For the purpose of this subpart the general definitions, abbreviations, and methods of analysis set forth in 40 CFR 401 shall apply to this subpart.

§ 421.242-421.243 — 421.242-421.243 [Reserved]

§ 421.244 — Standards of performance for new sources.

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

(a) Slag reclaim tailings.

(b) Acid reclaim leaching filtrate.

(c) Acid reclaim leaching belt filter backwash.

§ 421.245 — 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 secondary nickel process wastewater introduced into a POTW must not exceed the following values:

(a) Slag reclaim tailings.

(b) Acid reclaim leaching filtrate.

(c) Acid reclaim leaching belt filter backwash

§ 421.246 — 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 secondary nickel process wastewater introduced into a POTW shall not exceed the following values:

(a) Slag reclaim tailings.

(b) Acid reclaim leaching filtrate.

(c) Acid reclaim leaching belt filter backwash.

§ 421.247 — [Reserved]

§ 421.250 — Applicability: Description of the primary precious metals and mercury subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of gold, silver, or mercury by primary precious metals and mercury facilities.

§ 421.251 — 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.

§ 421.252 — 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) Smelter wet air pollution control.

(b) Silver chloride reduction spent solution.

(c) Electrolytic cells wet air pollution control.

(d) Electrolyte preparation wet air pollution control.

(e) Calciner wet air pollution control.

(f) Calcine quench water.

(g) Calciner stack gas contact cooling water.

(h) Condenser blowdown.

(i) Mercury cleaning bath water.

§ 421.253 — 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) Smelter wet air pollution control.

(b) Silver chloride reduction spent solution.

(c) Electrolytic cells wet air pollution control.

(d) Electrolyte preparation wet air pollution control.

(e) Calciner Wet Air Pollution Control.

(f) Calcine quench water.

(g) Calciner stack gas contact cooling water.

(h) Condenser blowdown.

(i) Mercury cleaning bath water.

§ 421.254 — Standards of performance for new sources.

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

(a) Smelter wet air pollution control.

(b) Silver chloride reduction spent solution.

(c) Electrolytic cells wet air pollution control.

(d) Electrolyte preparation wet air pollution control.

(e) Calciner wet air pollution control.

(f) Calcine quench water.

(g) Calciner stack gas contract cooling water.

(h) Condenser blowdown.

(i) Mercury cleaning bath water.

§ 421.255 — [Reserved]

§ 421.256 — 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 precious metals and mercury process wastewater introduced into a POTW shall not exceed the following values:

(a) Smelter wet air pollution control.

(b) Silver chloride reduction spent solution.

(c) Electrolytic cells wet air pollution control.

(d) Electrolyte preparation wet air pollution control.

(e) Calciner wet air pollution control.

(f) Calcine quench water.

(g) Calciner stack gas contact cooling water.

(h) Condenser blowdown.

(i) Mercury cleaning bath water.

§ 421.257 — [Reserved]

§ 421.260 — Applicability: Description of the secondary precious metals subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of precious metals at secondary precious metals facilities.

§ 421.261 — Specialized definitions.

For the purpose of this subpart:

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

(b) The term precious metals shall mean gold, platinum, palladium, rhodium, iridium, osmium, and ruthenium.

(c) The term Combined Metals, shall mean the total of gold, platinum and palladium.

§ 421.262 — 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) Furnace wet air pollution control.

(b) Raw material granulation.

(c) Spent plating solutions.

(d) Spent cyanide stripping solutions.

(e) Refinery wet air pollution control. 2

(f) Gold solvent extraction raffinate and wash water.

(g) Gold spent electrolyte.

(h) Gold precipitation and filtration.

(i) Platinum precipitation and filtration.

(j) Palladium precipitation and filtration.

(k) Other platinum group metals precipitation and filtration.

(l) Spent solution from PGC salt production.

(m) Equipment and floor wash.

(n) Preliminary treatment.

§ 421.263 — 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) Furnace wet air pollution control.

(b) Raw material granulation.

(c) Spent plating solutions.

(d) Spent cyanide stripping solutions.

(e) Refinery wet air pollution control 2.

(f) Gold solvent extraction raffinate and wash water.

(g) Gold spent electrolyte.

(h) Gold precipitation and filtration.

(i) Platinum precipitation and filtration.

(j) Palladium precipitation and filtration.

(k) Other platinum group metals precipitation and filtration.

(l) Spent solutions from PGC salt production.

(m) Equipment and floor wash.

(n) Preliminary treatment.

§ 421.264 — Standards of performance for new sources.

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

(a) Furnace wet air pollution control.

(b) Raw material granulation.

(c) Spent plating solutions.

(d) Spent cyanide stripping solutions.

(e) Refinery wet air pollution control 2.

(f) Gold solvent extraction raffinate and wash water.

(g) Gold spent electrolyte.

(h) Gold precipitation and filtration.

(i) Platinum precipitation and filtration.

(j) Palladium precipitation and filtration.

(k) Other platinum group metals precipitation and filtration.

(l) Spent solution from PGC salt production.

(m) Equipment and floor wash.

(n) Preliminary treatment.

§ 421.265 — 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 secondary precious metals process wastewater introduced into a POTW must not exceed the following values:

(a) Furnace wet air pollution control.

(b) Raw material granulation.

(c) Spent plating solutions.

(d) Spent Cyanide stripping solutions.

(e) Refinery wet air pollution control. 1

(f) Gold solvent extraction raffinate and wash water.

(g) Gold spent electrolyte.

(h) Gold precipitation and filtration.

(i) Platinum precipitation and filtration.

(j) Palladium precipitation and filtration.

(k) Other platinum group metals precipitation and filtration.

(l) Spent solution from PGC salt production.

(m) Equipment and floor wash.

(n) Preliminary Treatment.

§ 421.266 — 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 secondary precious metals process wastewater introduced into a POTW shall not exceed the following values:

(a) Furnace wet air pollution control.

(b) Raw material granulation.

(c) Spent plating solutions.

(d) Spent cyanide stripping solutions.

(e) Refinery Wet Air Pollution Control. 1

(f) Gold solvent extraction raffinate and wash water.

(g) Gold spent electrolyte.

(h) Gold precipitation and filtration.

(i) Platinum precipitation and filtration.

(j) Palladium precipitation and filtration.

(k) Other platinum group metals precipitation and filtration.

(l) Spent solution from PGC salt production.

(m) Equipment and floor wash.

(n) Preliminary treatment.

§ 421.267 — [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.

§ 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.

§ 421.272-421.273 — 421.272-421.273 [Reserved]

§ 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.

(b) Dryer vent caustic wet air pollution control.

(c) Electrolytic cell water quench and scrubber.

(d) Electrolytic cell caustic wet air pollution control.

(e) Sodium hypochlorite filter backwash.

§ 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.

(b) Dryer vent caustic wet air pollution control.

(c) Electrolytic cell water quench and scrubber.

(d) Electrolytic cell caustic wet air pollution control.

(e) Sodium hypochlorite filter backwash.

§ 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.

(b) Dryer vent caustic wet air pollution control.

(c) Electrolytic cell water quench and scrubber.

(d) Electrolytic cell caustic wet air pollution control.

(e) Sodium hypochlorite filter backwash.

§ 421.277 — [Reserved]

§ 421.280 — Applicability: Description of the secondary tantalum subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of tantalum at secondary tantalum facilities.

§ 421.281 — 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.

§ 421.282 — 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) Tantalum alloy leach and rinse.

(b) Capacitor leach and rinse.

(c) Tantalum sludge leach and rinse.

(d) Tantalum powder acid wash and rinse.

(e) Leaching wet air pollution control.

§ 421.283 — 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) Tantalum alloy leach and rinse.

(b) Capacitor leach and rinse.

(c) Tantalum sludge leach and rinse.

(d) Tantalum powder acid wash and rinse.

(e) Leaching wet air pollution control.

§ 421.284 — Standards of performance for new sources.

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

(a) Tantalum alloy leach and rinse.

(b) Capacitor leach and rinse.

(c) Tantalum sludge leach and rinse.

(d) Tantalum powder acid wash and rinse.

(e) Leaching wet air pollution control.

§ 421.285 — [Reserved]

§ 421.286 — 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 secondary tantalum process wastewater introduced into a POTW shall not exceed the following values:

(a) Tantalum alloy leach and rinse.

(b) Capacitor leach and rinse.

(c) Tantalum sludge leach and rinse.

(d) Tantalum powder acid wash and rinse.

(e) Leaching wet air pollution control.

§ 421.287 — [Reserved]

§ 421.290 — Applicability: Description of the secondary tin subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of tin at secondary tin facilities utilizing either pyrometallurgical or hydrometallurgical processes to recover tin from secondary materials.

§ 421.291 — 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.

§ 421.292 — 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) Tin smelter SO2 scrubber.

(b) Dealuminizing rinse.

(c) Tin mud acid neutralization filtrate.

(d) Tin hydroxide wash.

(e) Spent electrowinning solution from new scrap.

(f) Spent electrowinning solution from municipal solid waste.

(g) Tin hydroxide supernatant from scrap.

(h) Tin hydroxide supernatant from plating solutions and sludges.

(i) Tin hydroxide filtrate.

§ 421.293 — 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) Tin smelter SO2 scrubber.

(b) Dealuminizing rinse.

(c) Tin mud acid neutralization filtrate.

(d) Tin hydroxide wash.

(e) Spent electrowinning solution from new scrap.

(f) Spent electrowinning solution from municipal solid waste.

(g) Tin hydroxide supernatant from scrap.

(h) Tin hydroxide supernatant from plating solutions and sludges.

(i) Tin hydroxide filtrate.

§ 421.294 — Standards of performance for new sources.

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

(a) Tin smelter SO2 scrubber.

(b) Dealuminizing rinse.

(c) Tin mud acid neutralization filtrate.

(d) Tin hydroxide wash.

(e) Spent electrowinning solution from new scrap.

(f) Spent electrowinning solution from municipal solid waste.

(g) Tin hydroxide supernatant from scrap.

(h) Tin hydroxide supernatant from plating solutions and sludges.

(i) Tin hydroxide filtrate.

§ 421.295 — 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 secondary tin process wastewater introduced into a POTW must not exceed the following values:

(a) Tin smelter SO2 scrubber.

(b) Dealuminizing rinse.

(c) Tin mud acid neutralization filtrate.

(d) Tin hydroxide wash.

(e) Spent electrowinning solution from new scrap.

(f) Spent electrowinning solution from municipal solid waste.

(g) Tin hydroxide supernatant from scrap.

(h) Tin hydroxide supernatant from plating solutions and sludges.

(i) Tin hydroxide filtrate.

§ 421.296 — 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 secondary tin process wastewater introduced into a POTW shall not exceed the following values:

(a) Tin smelter SO2 scrubber.

(b) Dealuminizing rinse.

(c) Tin mud acid neutralization filtrate.

(d) Tin hydroxide wash.

(e) Spent electrowinning solution from new scrap.

(f) Spent electrowinning solution from municipal solid waste.

(g) Tin hydroxide supernatant from scrap.

(h) Tin hydroxide supernatant from plating solutions and ludges.

(i) Tin hydroxide filtrate.

§ 421.297 — [Reserved]

§ 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.

(b) Chlorination area-vent wet air pollution control.

(c) TiCl4 handling wet air pollution control.

(d) Reduction area wet air pollution control.

(e) Melt cell wet air pollution control.

(f) Chlorine liquefaction wet air pollution control.

(g) Sodium reduction container reconditioning wash water.

(h) Chip crushing wet air pollution control.

(i) Acid leachate and rinse water.

(j) Sponge crushing and screening wet air pollution control.

(k) Acid pickle and wash water.

(l) Scrap milling wet air pollution control.

(m) Scrap detergent wash water.

(n) Casting crucible wash water.

(o) Casting contact cooling water.

§ 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.

(b) Chlorination area-vent wet air pollution control.

(c) TiCl4 handling wet air pollution control.

(d) Reduction area wet air pollution control.

(e) Melt cell wet air pollution control.

(f) Chlorine liquefaction wet air pollution control.

(g) Sodium reduction container reconditioning wash water.

(h) Chip crushing wet air pollution control.

(i) Acid leachate and rinse water.

(j) Sponge crushing and screening wet air pollution control.

(k) Acid pickle and wash water.

(l) Scrap milling wet air pollution control.

(m) Scrap detergent wash water.

(n) Casting crucible wash water.

(o) Casting contact cooling water.

§ 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.

(b) Chlorination area-vent wet air pollution control.

(c) TiCl4 handling wet air pollution control.

(d) Reduction area wet air pollution control.

(e) Melt cell wet air pollution control.

(f) Chlorine liquefaction wet air pollution control.

(g) Sodium reduction container reconditioning wash.

(h) Chip crushing wet air pollution control.

(i) Acid leachate and rinse water.

(j) Sponge crushing and screening wet air pollution control.

(k) Acid pickle and wash water.

(l) Scrap milling wet air pollution control.

(m) Scrap detergent wash water.

(n) Casting crucible wash water.

(o) Casting contact cooling water.

§ 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.

(b) Chlorination Area-vent wet air pollution control.

(c) TiCl4 handling wet air pollution control.

(d) Reduction area wet air pollution control.

(e) Melt cell wet air pollution control.

(f) Chlorine liquefaction wet air pollution control.

(g) Sodium reduction container reconditioning wash water.

(h) Chip crushing wet air pollution control.

(i) Acid leachate and rinse water.

(j) Sponge crushing and screening wet air pollution control.

(k) Acid pickle and wash water.

(l) Scrap milling wet air pollution control.

(m) Scrap detergent wash water.

(n) Casting crucible wash water.

(o) Casting contact cooling water.

§ 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.

(b) Chlorination area-vent wet air pollution control.

(c) TiCl4 handling wet air pollution control.

(d) Reduction area wet air pollution control.

(e) Melt cell wet air pollution control.

(f) Chlorine liquefaction wet air pollution control.

(g) Sodium reduction container reconditioning wash water.

(h) Chip crushing wet air pollution control.

(i) Acid leachate and rinse water.

(j) Sponge crushing and screening wet air pollution control.

(k) Acid pickle and wash water.

(l) Scrap milling wet air pollution control.

(m) Scrap detergent wash water.

(n) Casting crucible wash water.

(o) Casting contact cooling water.

§ 421.307 — [Reserved]

§ 421.310 — Applicability: Description of the secondary tungsten and cobalt subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of tungsten or cobalt at secondary tungsten and cobalt facilities processing tungsten or tungsten carbide scrap raw materials.

§ 421.311 — 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.

§ 421.312 — 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) Tungsten detergent wash and rinse.

(b) Tungsten leaching acid.

(c) Tungsten post-leaching wash and rinse.

(d) Synthetic scheelite filtrate.

(e) Tungsten carbide leaching wet air pollution control.

(f) Tungsten carbide wash water.

(g) Cobalt sludge leaching wet air pollution control.

(h) Crystallization decant.

(i) Acid wash decant.

(j) Cobalt hydroxide filtrate.

(k) Cobalt hydroxide filter cake wash.

§ 421.313 — 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) Tungsten detergent wash and rinse.

(b) Tungsten leaching acid.

(c) Tungsten post-leaching wash and rinse.

(d) Synthetic scheelite filtrate.

(e) Tungsten carbide leaching wet air pollution control.

(f) Tungsten carbide wash water.

(g) Cobalt sludge leaching wet air pollution control.

(h) Crystallization decant.

(i) Acid wash decant.

(j) Cobalt hydroxide filtrate.

(k) Cobalt hydroxide filter cake wash.

§ 421.314 — Standards of performance for new sources.

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

(a) Tungsten detergent wash and rinse.

(b) Tungsten leaching acid.

(c) Tungsten post-leaching wash and rinse.

(d) Synthetic scheelite filtrate.

(e) Tungsten carbide leaching wet air pollution control.

(f) Tungsten carbide wash water.

(g) Cobalt sludge leaching wet air pollution control.

(h) Crystallization decant.

(i) Acid wash decant.

(j) Cobalt hydroxide filtrate.

(k) Cobalt hydroxide filter cake wash.

§ 421.315 — Pretreatment standards for existing sources.

Except as provided in 40 CFR 403.7, any existing source subject to this subpart which introduces polutants 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 secondary tungsten and cobalt process wastewater introduced into a POTW shall not exceed the following values:

(a) Tungsten detergent wash and rinse.

(b) Tungsten leaching acid.

(c) Tungsten post-leaching wash and rinse.

(d) Synthetic scheelite filtrate.

(e) Tungsten carbide leaching wet air pollution control.

(f) Tungsten carbide wash water.

(g) Cobalt sludge leaching wet air pollution control.

(h) Crystallization decant.

(i) Acid wash decant.

(j) Cobalt hydroxide filtrate.

(k) Cobalt hydroxide filter cake wash.

§ 421.316 — 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 secondary tungsten and cobalt process wastewater introduced into a POTW shall not exceed the following values:

(a) Tungsten detergent wash and rinse.

(b) Tungsten leaching acid.

(c) Tungsten post-leaching wash and rinse.

(d) Synthetic scheelite filtrate.

(e) Tungsten carbide leaching wet air pollution control.

(f) Tungsten carbide wash water.

(g) Cobalt sludge leaching wet air pollution control.

(h) Crystallization decant.

(i) Acid wash decant.

(j) Cobalt hydroxide filtrate.

(k) Cobalt hydroxide filter cake wash.

§ 421.317 — [Reserved]

§ 421.320 — Applicability: Description of the secondary uranium subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of uranium (including depleted uranium) by secondary uranium facilities.

§ 421.321 — 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.

§ 421.322 — 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 practiacable technology currently available:

(a) Refinery sump filtrate.

(b) Slag leach reslurry.

(c) Solvent extraction raffinate filtrate.

(d) Digestion wet air pollution control.

(e) Evaporation and denitration wet air pollution control.

(f) Hydrofluorination alkaline scrubber.

(g) Hydrofluorination water scrubber.

(h) Magnesium reduction and casting floor wash.

(i) Laundry wastewater.

§ 421.323 — 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) Refinery sump filtrate.

(b) Slag leach reslurry.

(c) Solvent extraction raffinate filtrate.

(d) Digestion wet air pollution control.

(e) Evaporation and denitration wet air pollution control.

(f) Hydrofluorination alkaline scrubber.

(g) Hydrofluorination water scrubber.

(h) Magnesium reduction and casting floor wash.

(i) Laundry wastewater.

§ 421.324 — Standards of performance for new sources.

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

(a) Refinery sump filtrate.

(b) Slag leach reslurry.

(c) Solvent extraction raffinate filtrate.

(d) Digestion wet air pollution control.

(e) Evaporation and denitration wet air pollution control

(f) Hydrofluorination alkaline scrubber.

(g) Hydrofluorination water scrubber.

(h) Magnesium reduction and casting floor wash.

(i) Laundry wastewater.

§ 421.325 — [Reserved]

§ 421.326 — 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 secondary uranium process wastewater introduced into a POTW shall not exceed the following values:

(a) Refinery sump filtrate.

(b) Slag leach reslurry.

(c) Solvent extraction raffinate filtrate.

(d) Digestion wet air pollution control.

(e) Evaporation and denitration wet air pollution control.

(f) Hydrofluorination alkaline scrubber.

(g) Hydrofluorination water scrubber.

(h) Magnesium reduction and casting floor wash.

(i) Laundry wastewater.

§ 421.327 — [Reserved]

§ 421.330 — Applicability: Description of the primary zirconium and hafnium subcategory.

The provisions of this subpart are applicable to discharges resulting from the production of zirconium or hafnium at primary zirconium and hafnium facilities. There are two levels of BPT, BAT, NSPS, PSES and PSNS provisions for this subpart. Facilities which only produce zirconium or zirconium/nickel alloys by magnesium reduction of zirconium dioxide are exempt from regulations. All other facilities are subject to these regulations.

§ 421.331 — 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.

§ 421.332 — 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) Sand drying wet air pollution control.

(b) Sand chlorination off-gas wet air pollution control.

(c) Sand chlorination area-vent wet air pollution control.

(d) SiCl4 purification wet air pollution control.

(e) Feed makeup wet air pollution control.

(f) Iron extraction (MIBK) steam stripper bottoms.

(g) Zirconium filtrate.

(h) Hafnium filtrate.

(i) Calcining caustic wet air pollution control.

(j) Pure chlorination wet air pollution control.

(k) Reduction area-vent wet air pollution control.

(l) Magnesium recovery off-gas wet air pollution control.

(m) Magnesium recovery area-vent wet air pollution control.

(n) Zirconium chip crushing wet air pollution control.

(o) Acid leachate from zirconium metal production.

(p) Acid leachate from zirconium alloy production.

(q) Leaching rinse water from zirconium metal production.

(r) Leaching rinse water from zirconium alloy production.

§ 421.333 — 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) Sand drying wet air pollution control.

(b) Sand chlorination off-gas wet air pollution control.

(c) Sand chlorination area-vent wet air pollution control.

(d) SiCl4 purification wet air pollution control.

(e) Feed makeup wet air pollution control.

(f) Iron extraction (MIBK) steam stripper bottoms.

(g) Zirconium filtrate.

(h) Hafnium filtrate.

(i) Calcining caustic wet air pollution control.

(j) Pure chlorination wet air pollution control.

(k) Reduction area-vent wet air pollution control.

(l) Magnesium recovery off-gas wet air pollution control.

(m) Magnesium recovery area-vent wet air pollution control.

(n) Zirconium chip crushing wet air pollution control.

(o) Acid leachate from zirconium metal production.

(p) Acid leachate from zirconium alloy production.

(q) Leaching rinse water from zirconium metal production.

(r) Leaching rinse water from zirconium alloy production.

§ 421.334 — Standards of performance for new sources.

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

(a) Sand drying wet air pollution control.

(b) Sand chlorination off-gas wet air pollution control.

(c) Sand chlorination area-vent wet air pollution control.

(d) SiC14 purification wet air pollution control.

(e) Feed makeup wet air pollution control.

(f) Iron extraction (MIBK) steam stripper bottoms.

(g) Zirconium filtrate.

(h) Hafnium filtrate.

(i) Calcining caustic wet air pollution control.

(j) Pure chlorination wet air pollution control.

(k) Reduction area-vent wet air pollution control.

(l) Magnesium recovery off-gas wet air pollution control.

(m) Magnesium recovery area-vent wet air pollution control.

(n) Zirconium chip crushing west air pollution control.

(o) Acid leachate from zirconium metal production.

(p) Acid leachate from zirconium alloy production.

(q) Leaching rinse water from zirconium metal production.

(r) Leaching rinse water from zirconium alloy production.

§ 421.335 — [Reserved]

§ 421.336 — 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 zirconium and hafnium process wastewater introduced into a POTW shall not exceed the following values:

(a) Sand drying wet air pollution control.

(b) Sand chlorination off-gas wet air pollution control.

(c) Sand chlorination area vent wet air pollution control.

(d) SiCl4 purification wet air pollution control.

(e) Feed makeup wet air pollution control.

(f) Iron extraction (MIBK) steam stripper bottoms.

(g) Zirconium filtrate.

(h) Hafnium filtrate.

(i) Calcining caustic wet air pollution control.

(j) Pure chlorination wet air pollution control.

(k) Reduction area-vent wet air pollution control.

(l) Magnesium recovery off-gas wet air pollution control.

(m) Magnesium recovery area-vent wet air pollution control.

(n) Zirconium chip crushing wet air pollution control.

(o) Acid leachate from zirconium metal production.

(p) Acid leachate from zirconium alloy production.

(q) Leaching rinse water from zirconium metal production.

(r) Leaching rinse water from zirconium alloy production.

§ 421.337 — [Reserved]