250 ppm so2 in stack equates to what sulfur recovery efficiency

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18 AAC l.055. Industrial processes and fuel-burning equipment

(a) Visible emissions, excluding condensed water vapor, from an industrial process or fuel-burning equipment may not reduce visibility through the exhaust effluent by

(1) more than 20 per centum averaged over any six consecutive minutes, except as provided in (2) - (nine) of this subsection;

(ii) more than 30 pct averaged over whatsoever six consecutive minutes for fuel-burning equipment in operation before November 1, 1982, and using more 20 percent woodwaste as fuel;

(iii) more than 55 percent for a urea prilling belfry in operation before July 1, 1972, averaged over any vi consecutive minutes, nor more than than 40 percentage, based on a daily 24-hour average of five-2d measurements by continuous opacity monitoring instrumentation approved by the department and that conforms to Functioning Specification Number 1 in 40 C.F.R. Part 60, Appendix B, adopted by reference in 18 AAC 50.040;

(four) 20 percent or greater averaged over whatever half-dozen consecutive minutes for an asphalt plant constructed or modified after June 11, 1973;

(5) 20 percentage or greater averaged over whatever six consecutive minutes for process emissions, other than from a pneumatic cleaner, at a coal grooming plant constructed or modified after Nov 1, 1982;

(6) x percent or greater averaged over any six sequent minutes for a pneumatic cleaner synthetic or modified at a coal grooming plant afterwards November 1, 1982;

(seven) x percentage or greater averaged over any vi sequent minutes for process emissions, other than from a kiln, at a portland cement plant constructed or modified after November i, 1982;

(8) 20 per centum or greater averaged over any six sequent minutes for a kiln constructed or modified at a portland cement plant later November 1, 1982; and

(ix) more than 20 percent for more than three minutes in whatsoever one hour, except for an additional three minutes in any one hour for a coal burning banality that began operation earlier August 17, 1971, if

(A) the visible emissions are caused by startup, shutdown, soot-bravado, grate cleaning, or other routine maintenance specified in an operating permit issued under this chapter;

(B) the owner or operator of the boiler monitors visible emissions by continuous opacity monitoring instrumentation that

(i) conforms to Performance Specification i in twoscore C.F.R. Part sixty, Appendix B, adopted by reference in 18 AAC 50.040; and

(two) completes i cycle of sampling and analyzing for each successive xv-2d period;

(C) the owner or operator of the boiler provides the department with a demonstration that the particulate matter emissions from the boiler allowed by this opacity limit will non crusade or contribute to a violation of the ambient air quality standards for PM-10 in 18 AAC 50.010, or crusade the maximum allowable increases for PM-10 in eighteen AAC l.020 to be exceeded; and

(D) the federal administrator approves a facility-specific revision to the state implementation plan, required under 42 The statesC. 7410, authorizing the application of this opacity limit instead of the opacity limit otherwise applicable under this department.

(b) Particulate thing emitted from an industrial procedure or fuel-burning equipment may non exceed, per cubic foot of exhaust gas corrected to standard conditions and averaged over three hours,

(one) 0.05 grains, except as provided in (2) - (6) of this subsection, (d) - (f) of this section, and xviii AAC 50.060;

(2) 0.one grains for a steam generating plant fueled past

(A) coal, and in operation earlier July 1, 1972;

(B) coal, and rated less than 250 million Btu per 60 minutes heat input; or

(C) municipal wastes;

(3) 0.1 grains for an industrial process in functioning before July 1, 1972, except every bit provided in (6) of this subsection;

(4) 0.15 grains for fuel-called-for equipment in functioning before November 1, 1982, and using more than 20 pct woodwaste as fuel;

(five) 0.04 grains for an asphalt plant constructed or modified after June 11, 1973; or

(half-dozen) 0.04 grains for a urea prilling tower.

(c) Sulfur-compound emissions, expressed equally sulfur dioxide, from an industrial process or from fuel-called-for equipment may not exceed 500 ppm averaged over a period of iii hours, except as provided in (d) - (f) of this department and eighteen AAC fifty.060.

(d) At a petroleum refinery, emissions from the post-obit sources, synthetic or modified subsequently November 1, 1982, may not exceed the following:

(1) for a catalytic cracking unit catalyst regenerator

(A) 1.0 kilogram of particulate matter per 1,000 kilograms of coke burnoff;

(B) 43.0 additional grams of particulate matter per million joules supplemental oestrus owing to fuels burned in a catalyst regenerator waste heat boiler; and

(C) 500 ppm carbon monoxide by volume of exhaust gas;

(2) for a sulfur recovery plant rated at more than than 20 long tons per day

(A) 250 ppm sulfur dioxide at cypher per centum oxygen on a dry basis; or

(B) 10 ppm hydrogen sulfide and a total of 300 ppm reduced sulfur compounds, expressed as sulfur dioxide, at zero percent oxygen on a dry basis, if the air pollutants are non oxidized earlier release to the atmosphere; and

(3) for fuel-burning equipment, a sulfur dioxide concentration, averaged over three hours, equal to whichever of the following is applicable:

(A) for equipment burning only fuel gas, the concentration of uncontrolled emissions that would result from burning fuel gas containing 230 milligrams hydrogen sulfide per dry standard cubic meter;

(B) for fuel-burning equipment that does not fire fuel gas, 500 ppm;

(C) for fuel-burning equipment that burns a combination of fuel gas and other fuels, a concentration based on the commanded emissions in (A) and (B) of this paragraph, prorated past the proportion of fuel gas and other fuels to the total fuel burned in the equipment.

(e) At a coal grooming plant, emissions from the post-obit sources, if constructed or modified after November i, 1982, may non exceed the following:

(1) for a thermal drying unit, 70 milligrams of particulate matter per cubic meter of exhaust gas at standard weather; and

(2) for a pneumatic coal-cleaning unit, 40 milligrams of particulate affair per cubic meter of exhaust gas at standard weather condition.

(f) At a portland cement plant, emissions from the post-obit sources, if constructed or modified after November 1, 1982, may not exceed the post-obit:

(ane) for a clinker cooler, 0.050 kilograms of particulate affair per one,000 kilograms of feed on a dry basis to the kiln; and

(two) for a kiln, 0.15 kilograms of particulate affair per ane,000 kilograms of feed on a dry out basis.

(g) Release of materials other than process emissions, products of combustion, or materials introduced to command pollutant emissions from a stack at a stationary source synthetic or modified after November i, 1982, is prohibited except as authorized by a construction permit, Championship V let, or air quality control permit issued before Oct 1, 2004.

History: Eff. 1/18/97, Register 141; am 6/21/98, Annals 146; am 11/four/99, Register 152; am v/3/2002, Register 162; am 10/i/2004, Register 171

Authorization: Equally 46.03.020

Equally 46.14.010

Every bit 46.xiv.020

Every bit 46.14.030

Sec. 30, ch. 74,

SLA 1993

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