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Part 209: Primary Aluminum Reduction Plants

(Statutory authority: Environmental Conservation Law, § 19-0301[1][a])

[Filed and effective 11/5/84.]

[page 1 of 1]

For administrative information about this posting, contact: Division of Air Resources. The Bureau of Stationary Sources at (518) 402-8403 is the contact for technical questions pertaining to this rule.

Contents:

Sec.

§209.1 Definitions

(a) For the purpose of this Part, the general definitions of Part 200 of this Title will apply.

(b) For the purpose of this Part, the following definitions will also apply:

(1) Aluminum equivalent. The amount of aluminum which can be produced from the amount of anodes produced by an anode bake plant. This is assumed to equal two tons of aluminum per ton of anodes unless the owner or operator can establish a different number by submitting production records of the amount of aluminum produced and the concurrent amount of anode consumed by potrooms.

(2) Anode bake plant. A facility which produces carbon anodes for use in a primary aluminum reduction plant.

(3) Potroom. A building unit at a primary aluminum reduction plant which houses a group of electrolytic cells in which aluminum is produced. A potroom group consists of an uncontrolled potroom, a potroom which is controlled individually or a group of potrooms or potroom segments ducted to a common control system.

(4) Prebake plant. A primary aluminum reduction plant where anode baking is performed by heating unbaked anode material in a furnace or kiln which is separate from the electrolytic reduction cell.

(5) Primary aluminum reduction plant. A facility where aluminum is produced by electrolytic reduction.

(6) Soderberg plant. A primary aluminum reduction plant where anode baking is performed by heating unbaked anode material within the same casing which contains the working anode while it is immersed in the electrolytic cell.

(7) Total fluorides. Elemental fluorine and all fluoride compounds as measured by methods specified in Appendix A of 40 CFR 60 (see table 1, section 200.9 of this Title), or, if the application for the permit to construct for the source was received by the commissioner before October 24, 1974, as measured by alternative methods approved by the commissioner.

§209.2 Emissions of total fluorides

(a) No person will cause or allow emissions of total fluorides to the outdoor atmosphere from any potroom group at a primary aluminum reduction plant for which an application for a permit to construct was received by the commissioner before October 24, 1974, and which is not applicable to Subpart S, 40 CFR 60, in excess of:

(1) 4.3 pounds per ton of aluminum produced at Soderberg plants; or

(2) 4.2 pounds per ton of aluminum produced at prebake plants.

(b) No person will cause or allow emissions of total fluorides to the outdoor atmosphere from any furnace at an anode bake plant for which an application for a permit to construct was received by the commissioner before October 24, 1974, in excess of 0.40 pounds per ton of aluminum equivalent.

(c) The owner or operator of a primary aluminum reduction plant for which an application for a permit to construct was received by the commissioner for October 24, 1974, and which is not applicable to Subpart S, 40 CFR 60 (see table 1, section 200.9 of this Title), may develop a facility-wide emission reduction plan for fluorides instead of having each emission point comply with the permissible emissions prescribed in subdivisions (a) and (b) of this section, provided that:

(1) the owner or operator demonstrates to the satisfaction of the commissioner that the total emission of fluorides from the facility will not exceed the mathematical sum of emissions that would be allowed from the potroom groups and anode bake plant furnaces; and

(2) the facility-wide emission reduction plan includes an emission test protocol acceptable to the commissioner as determined on a case-by-case basis.

(d) No person will cause or allow emissions of total fluorides to the outdoor atmosphere from any potroom group at a primary aluminum reduction plant for which an application for a permit to construct was received by the commissioner after October 23, 1974, in excess of:

(1) 2.0 pounds per ton of aluminum produced at Soderberg plants; or

(2) 1.9 pounds per ton of aluminum produced at prebake plants.

(e) No person will cause or allow emissions of total fluorides to the outdoor atmosphere from any furnace at an anode bake plant for which an application for a permit to construct was received by the commissioner after October 23, 1974, in excess of 0.10 pounds per ton of aluminum equivalent.

(f) Emission test methods for plants for which an application for a permit to construct was received by the commissioner before October 24, 1974, will be determined by the commissioner on a case-by-case basis taking into account technical and economic feasibility.

§209.3 Opacity of emissions

(a) No person will cause or allow visible emissions to the outdoor atmosphere from any potroom group at a primary aluminum reduction plant or any furnace at an anode bake plant, for which an application for a permit to construct was received by the commissioner before October 24, 1974, having an average opacity (six minutes) of 20 percent or greater, except uncombined water.

(b) Upon written application by the owner or operator of a source subject to subdivision (a) of this section, the commissioner, at his discretion, may grant an equivalent opacity standard which exceeds the applicable opacity standard if the source owner can demonstrate through acceptable tests for such source that he is in compliance with all applicable emission requirements other than the opacity standard and that the source and any associated emission control equipment is being operated and maintained in a manner acceptable to the commissioner. An equivalent opacity standard for an emission source will only be granted where reasonable available control technology, as determined by the commissioner, has been utilized. In such case, the source owner or operator will not cause or allow emissions to exceed the equivalent opacity.

(c) No person will cause or allow emissions to the outdoor atmosphere from any potroom group at a primary aluminum reduction plant or any furnace at an anode bake plant for which an application for a permit to construct was received by the commissioner after October 23, 1974, having the following six-minute average opacity, except uncombined water:

(1) 10 percent or greater from any potroom group at a primary aluminum reduction plant; and

(2) 20 percent or greater from any furnace at an anode bake plant.

(d) Section 212.7(a) of this Title will apply to any other confined process at a primary aluminum reduction plant or anode bake plant for which a permit to construct was received by the commissioner before October 24, 1974.

§209.4 Emissions other than total fluorides

Emissions of air contaminants other than total fluorides from any air contamination source in a primary aluminum reduction plant are regulated by all other applicable Parts of this Subchapter.

§209.5 Monitoring of operations

(a) The owner or operator of any process subject to the provisions of this Part for which an application for a permit to construct is received by the commissioner after October 23, 1974, must:

(1) install, calibrate, maintain and operate weighing devices which can be used to determine daily the weight of aluminum and anode produced; and

(2) maintain a record of daily production rates of aluminum and anodes, raw material feed rates and cell or potline voltages.

(b) The owner or operator of any process subject to the provisions of this Part for which an application for a permit to construct was received by the commissioner before October 24, 1974, must:

(1) install, calibrate, maintain and operate weighing devices which can be used to determine the average daily weight of aluminum and anode produced during a calendar month; and

(2) maintain a record of average daily production rates of aluminum and anodes.

(c) Weighing devices used to comply with the requirements of this section must have an accuracy of ±5.0 percent over their operating range.

(d) Records required by this section must be retained for at least two years following the date on which the measurements were made.

§209.6 Compliance

(a) Within 90 days after the effective date of this Part, or such later date as determined by the commissioner, no person will operate any primary aluminum reduction plant or anode bake plant which fails to comply with any applicable standard, visible emissions limitation or other requirement of this Part.

(b) Such determination of the commissioner will establish that the compliance with the provisions of this Part must be accomplished within 30 months after the effective date of this Part. Such a determination extending the final compliance date beyond that otherwise required by subdivision (a) of this section can only be issued to an affected source for which an application for a permit to construct was received by the commissioner before October 24, 1974, and when the source owner or operator can demonstrate:

(1) unreasonable cost of control due to plant age, location or process design;

(2) physical impossibility of installing necessary control equipment within the allowable time; or

(3) other factors specific to the facility that make application of such a compliance schedule unreasonable.

§209.7 Exceptions

On a case-by-case basis, the commissioner may provide for the application of emission standards for total fluorides less stringent than those otherwise required in section 209.2(d) of this Part if the owner or operator can demonstrate that exemplary operation and maintenance procedures were used with respect to the emission control system and that proper control equipment was in operation during the emission test. Such less stringent standards shall not exceed:

(a) 2.6 pounds per ton of aluminum produced for potroom groups at Soderberg plants; or

(b) 2.5 pounds per ton of aluminum produced for potroom groups at prebake plants.