1**Summary of PM and SO2 RACT Determinations for Fairb anks Stationary Sources** **January 18, 2017 Facility** **Source Unit Size** **RACT Regulatory Provision/ Permit Condition** **Citations Notes** Ft.WainwrightCoal-fired Boilers3-8 (EU IDs 1-6)230MMBtu/hrBaghouse(PM2.5)The Permittee shall not cause or allow visibleemissions, excluding condensed watervapor, emitted from EU IDs 1 through 6 toreduce visibility through the exhaust effluentby more than 20 percent for more than threeminutes in any one hour.Minor Permit (2010),AQ112MSS03 Condition2; 18 AAC 50.055(a)(9)The permittee shall not cause or allowparticulate matter emitted from EU IDs 1through 6 and 8 through 36 to exceed 0.05grains per dry standard cubicfoot (gr./dscf) of exhaust gas [particulatematter] corrected to standard conditions andaveraged overthree hours.Title V Permit (2015),AQ1121TVP02 Condition7.1, AQ1121MSS01Conditions 3 & 8,9/9/2008; 18 AAC50.055(b)(1)For EU IDs 1 through 6:a. Install and operate using baghouse controldevices.Minor Permit (2010),AQ112MSS03 Condition2.1a, 40CFR Part 64; 18AAC 50.326(j)Low sulfurcoal (SO2)Sulfur-compound emissions, expressed assulfur dioxide, from an industrial process orfrom fuel-burning equipment may not exceed500 ppm averaged over a period of threehours.18 AAC 50.055(c) Under Standard OperatingPermit Condition XIII – CoalFired Boilers– SO2 emissionsfrom coal fired boilers of thetype used in Fairbanks arepresumed to be in compliancewith the 500 ppm limit if theyare burning coal with less than0.4% sulfur. CombustingAlaska low sulfur coal at 0.4%results in approximately 500ppm stack gas concentrations.Aurora Coal-fired Boiler 1,2, 3, 5c(EU IDs 4, 5, 6, and7)76MMBtu/hr(5 MW)each(Boilers1,2,3);269MMBtu/hrBaghouse(PM2.5)The Permittee shall not cause or allow visibleemissions, excluding condensed water vapor,emitted from EU IDs 4-7...to reduce visibilitythrough the exhaust effluent by more than 20percent for more than three minutes in anyone hour.Title V Permit (2013),AQ0315TVP03,Condition 14, 18 AAC50.055(a)(9)The Permittee shall not cause or allowparticulate matter (PM) emitted from EU IDs4-7 to exceed 0.1 grains per cubic foot ofTitle V Permit (2013),AQ0315TVP03,2(20 MW)(Boiler 5)exhaust gas corrected to standard conditionsand averaged over three hours.Condition 17, 18 AAC50.055(b)(2)Low sulfurcoal (SO2)Sulfur-compound emissions, expressed assulfur dioxide, from an industrial process orfrom fuel-burning equipment may not exceed500 ppm averaged over a period of threehours.18 AAC 50.055(c) Under Standard OperatingPermit Condition XIII – CoalFired Boilers– SO2 emissionsfrom coal fired boilers of thetype used in Fairbanks arepresumed to be in compliancewith the 500 ppm limit if theyare burning coal with less than0.4% sulfur. CombustingAlaska low sulfur coal at 0.4%results in approximately 500ppm stack gas concentrations.GVEANorth PolePower PlantGas Turbine #1-2(EU IDs 1 & 2)672MMBtu/hr(60.5 MW)Continueduse ofHAGO(SO2)Sulfur-compound emissions, expressed assulfur dioxide, from an industrial process orfrom fuel-burning equipment may not exceed500 ppm averaged over a period of threehours.18 AAC 50.055(c) Under Standard OperatingPermit Condition XI – SO2Emissions from Oil Fired FuelBurning Equipment – SO2emissions from oil fired boilersof the type used in Fairbanksare presumed to be incompliance with the 500 ppmlimit if they are burning fueloils with less than 0.75%sulfur. Combusting fuel oil at0.75% results in approximately500 ppm stack gasconcentrations.Continueduse ofHAGO(PM2.5)The Permittee shall not cause or allow PMemitted from EU IDs 1, 2, 5, 6, 7, 11, and 12listed in Table A to exceed 0.05 grains percubic foot of exhaust gas corrected tostandard conditions and averaged over threehours.Title V Permit (2014),AQ0110TVP03; 18 AAC50.055(b)(1)Gas Turbine #3(EU ID 5)455MMBtu/hr(43 MW)Continueduse ofnaptha andLSR (SO2)Limit the sulfur in gas turbine fuel 0-GT(naphtha or LSR) burned in EU IDs 5 and 6 tono more than 0.05 percent by weight.Construction PermitAQ0110CPT01, revision1, Condition 15.1aContinueduse ofnaptha andLSR(PM2.5)The Permittee shall not cause or allow PMemitted from EU IDs 1, 2, 5, 6, 7, 11, and 12listed in Table A to exceed 0.05 grains percubic foot of exhaust gas corrected tostandard conditions and averaged over threehours.Title V Permit (2014),AQ0110TVP03; 18 AAC50.055(b)(1)3GVEAZehnderGas Turbine #1-2(EU ID 1 & 2)268MMBtu/hr(18.4 MW)Continueduse ofHAGO(SO2)The sulfur content of fuel burned in EU IDs 1-4 shall not exceed 1.0 percent by weight atany time.Preconstruction Permitis referenced in Title Vpermit AQ01O9TVPO3,Condition 10Sulfur-compound emissions, expressed assulfur dioxide, from an industrial process orfrom fuel-burning equipment may not exceed500 ppm averaged over a period of threehours.18 AAC 50.055(c) Under Standard OperatingPermit Condition XI – SO2Emissions from Oil Fired FuelBurning Equipment – SO2emissions from oil fired boilersof the type used in Fairbanksare presumed to be incompliance with the 500 ppmlimit if they are burning fueloils with less than 0.75%sulfur. Combusting fuel oil at0.75% results in approximately500 ppm stack gasconcentrations.Continueduse ofHAGO(PM2.5)The Permittee shall not cause or allowparticulate matter emitted from EU IDs 1-4listed in Table A to exceed 0.05 grains percubic foot of exhaust gas corrected tostandard conditions and averaged over threehours.Title V Permit (2016),AQ0109TVP03; 18 AAC50.055(b)(1)UofA,FairbanksCoal-fired Boiler#1-2(EU 1 &2)140.4MMBtu/hrBaghouse(PM2.5)The Permittee shall not cause or allow visibleemissions, excluding condensed water vapor,emitted from EU IDs 1 and 2 listed in Table Ato reduce visibility through the exhausteffluent by more than 20 percent for morethan three minutes in any one hour.Title V Permit (2007),AQ0316TVP02,Condition 27, 18 AAC50.055(a)(9)The Permittee shall not cause or allowparticulate matter (PM) emitted from EU IDs1 and 2 to exceed 0.1 grains per cubic foot ofexhaust gas corrected to standard conditionsand averaged over three hours.Title V Permit (2007),AQ0316TVP02,Condition 28, 18 AAC50.055(b)(2)Low sulfurcoal (SO2)Sulfur-compound emissions, expressed assulfur dioxide, from an industrial process orfrom fuel-burning equipment may not exceed500 ppm averaged over a period of threehours.18 AAC 50.055(c) Under Standard OperatingPermit Condition XIII – CoalFired Boilers– SO2 emissionsfrom coal fired boilers of thetype used in Fairbanks arepresumed to be in compliancewith the 500 ppm limit if theyare burning coal with less than0.4% sulfur. Combusting4Alaska low sulfur coal at 0.4%results in approximately 500ppm stack gas concentrations.Dual-fuel firedBoiler #3-4(EU 3 & 4)180.9MMBtu/hrContinueduse of No.2 DistillateSulfur-compound emissions, expressed assulfur dioxide, from an industrial process orfrom fuel-burning equipment may not exceed500 ppm averaged over a period of threehours.18 AAC 50.055(c) Under Standard OperatingPermit Condition XI – SO2Emissions from Oil Fired FuelBurning Equipment – SO2emissions from oil fired boilersof the type used in Fairbanksare presumed to be incompliance with the 500 ppmlimit if they are burning fueloils with less than 0.75%sulfur. Combusting fuel oil at0.75% results in approximately500 ppm stack gasconcentrations.Additional considerations for SO2 RACT determinations. The coal-fired power plants rely on the UsibelliCoal Mine for their supply of coal, which is the only operational coalmine in Alaska. Given the unique geography of Alaska and the lack of any bulk commodity marine importterminals, importing coal of a different type wouldbe logistically andeconomically infeasible. The low sulfur coal notedabove, sourced from the Usibelli mine, is the onlyreasonably available supply of fuel for the coal-fired power plants in theFairbanks North Star Borough. The sulfur content ofUsibelli run-of-mine coal ranges from 0.12% to 0.34% with an average of 0.2%.Similarly, the supply of fuel for the oil-fired power plants is also limited. Crude oil is distributedto Fairbanks via the trans-Alaska oil pipeline system. The closure of the FlintHills North Pole Refinery has limited the supply offuel oils to the Petro Star North Pole Refinery, which produces two type of oil products, No. 1 distillate jet fuel and No. 2distillate fuel oil. The No. 2 distillate fuel produced by the Petro Star North Pole Refinery is the lowest-sulfur, reasonably available supply of fuel for the dual-fuel fired boilersin the nonattainment area. No. 2 distillate fuel oil produced by the Petro Star North Pole Refinery ranges from 0.39% to 0.44%. Note that the No. 2 distillate fuel oils producedat the two refineries on the Kenai Peninsula have alower sulfur content than that produced in Fairbanks as a result of the different crude oil feedstocks, so importing distillateoil from the Kenai refineries would result in lowerSO2 emissions.