1147 - 1 (Adopted December 5, 2008)

RULE 1147. NOx REDUCTIONS FROM MISCELLANEOUS SOURCE S

(a) Purpose and Applicability The purpose of this rule is to reduce nitrogen oxid e emissions from gaseous and liquid fuel fired combustion equipment as defined i n this rule. This rule applies to ovens, dryers, dehydrators, heaters, kilns, calcine rs, furnaces, crematories, incinerators, heated pots, cookers, roasters, fryer s, closed and open heated tanks and evaporators, distillation units, afterburners, degassing units, vapor incinerators, catalytic or thermal oxidizers, soil and water remediation units and other combustion equipment with nitrogen oxide emis sions that require a District permit and are not specifically required to comply with a nitrogen oxide emission limit by other District Regulation XI rules. This rule does not apply to solid fuelfired combustion equipment, internal combustion eng ines subject to District Rule 1110.2, turbines, charbroilers, or boilers, water h eaters, thermal fluid heaters and enclosed process heaters subject to District Rules 1109, 1146, 1146.1, or 1146.2 and equipment subject to District Rules 1111, 1112, 1117, 1118, 1121, or 1135.
(b) Definitions (1) ANNUAL CAPACITY FACTOR means the ratio of the A NNUAL HEAT INPUT of a unit in a calendar year to the amount of fuel it could have burned if it had operated at the rated heat input c apacity for 100 percent of the time during the calendar year. (2) ANNUAL HEAT INPUT means the actual amount of he at released by fuels burned in a unit during a calendar year, base d on the fuel's higher heating value. (3) BTU means British thermal unit or units.
(4) COMBUSTION MODIFICATION means replacement of a burner(s). (5) FOOD OVEN means an oven used to heat or cook fo od used for human consumption. (6) HEATER means any combustion equipment that is f ired with gaseous and/or liquid fuels and which transfers heat from c ombusted fuel to materials or air contained in the unit or in an adj oining cabinet, container or structure. Heater does not include any boiler o r PROCESS HEATER designed to transfer heat to water or process strea ms that is subject to anyRule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 2 NOx emission limits of District Rules 1109, 1146, 1 146.1 or 1146.2, and does not include any internal combustion engine or turbine. (7) HEAT INPUT means the higher heating value of th e fuel to the unit measured as BTU per hour. (8) HEAT OUTPUT means the enthalpy of the working f luid output of the
unit. (9) MAKE-UP AIR HEATER means a UNIT used to heat in coming air in order to maintain the temperature of a spray booth, container, room or other enclosed space where a person is working. A MAKE-UP AIR HEATER is not a burner used to heat an oven, dryer, heater or other unit where workers are not present during heating. (10) NOx EMISSIONS means the sum of nitrogen oxide and nitrogen dioxide in the flue gas, collectively expressed as nitrogen dioxide. (11) PROCESS HEATER means any equipment that is fir ed with gaseous and/or liquid fuels and which transfers heat from c ombusted fuel to water or process streams. PROCESS HEATER does not includ e any furnace, kiln or oven used for melting, heat treating, annea ling, drying, curing, baking, cooking, calcining, or vitrifying; or any u nfired waste heat recovery heater that is used to recover sensible he at from the exhaust of any combustion equipment. (12) PROTOCOL means a South Coast Air Quality Manag ement District approved test protocol for determining compliance w ith emission limits for applicable equipment. (13) RATED HEAT INPUT CAPACITY means the gross HEAT INPUT of the combustion UNIT specified on a permanent rating pla te attached by the
manufacturer to the device. If the UNIT has been a ltered or modified such that its gross HEAT INPUT is higher or lower than t he rated HEAT INPUT capacity specified on the original manufactur er’s permanent rating plate, the new gross HEAT INPUT shall be considered as the rated HEAT INPUT capacity. (14) REMEDIATION UNIT means a device used to captur e or incinerate air toxics, VOCs or other combustible vapors extracted from soil or water. (15) RESPONSIBLE OFFICIAL means: (A) For a corporation: a president or vice-preside nt of the corporation in charge of a principal business function or a dul y authorizedRule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 3 person who performs similar policy-making functions for the corporation; or (B) For a partnership or sole proprietorship: gen eral partner or proprietor, respectively. (C) For a government agency: a duly authorized per son (16) TENTER FRAME DRYER is a cloth dryer that holds the edges of the
material as it is dried in order to control shrinka ge. (17) THERM means 100,000 BTU. (18) UNIT means any oven, dryer, dehydrator, heater , kiln, calciner, furnace, crematory, incinerator, heated pot, cooker, roaster , fryer, heated tank and evaporator, distillation unit, afterburner, degassi ng unit, vapor incinerator, catalytic or thermal oxidizer, soil or water remedi ation units and other combustion equipment with nitrogen oxide emissions requiring a District permit and not specifically required to comply with a NOx emission limit by other District Regulation XI rules. UNIT does n ot mean any solid fuel fired combustion equipment, internal combustion eng ine subject to District Rule 1110.2, turbine, charbroiler, or boiler, water heater, thermal fluid heaters or enclosed process heater subject to Distr ict Rules 1109, 1146, 1146.1, or 1146.2 or equipment subject to District Rules 1111, 1112, 1117, 1118, 1121, or 1135. (19) VAPOR INCINERATOR means a furnace, afterburner , or other device for burning and destroying air toxics, VOCs or other co mbustible vapors in gas or aerosol form in gas streams.
(c) Requirements (1) On or after January 1, 2010 any person owning o r operating a unit subject to this rule shall not operate the unit in a manner that exceeds the applicable nitrogen oxide emission limit specified in Table 1 at the time a District permit is required for operation of a new, relocated or modified unit or, for in-use units, in accordance with the c ompliance schedule in Table 2, or at the time of a combustion modificatio n.Rule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 4 Table 1 – NO x Emission Limit

NOx Emission Limit

PPM @ 3% O 2 , dry or Pound/mmBtu heat input Equipment Category(ies) Process Temperature Gaseous Fuel-Fired Equipment  800 ° F > 800 ° F and < 1200° F  1200 ° F
Asphalt Manufacturing Operation 40 ppm 40 ppm Afterburner, Degassing Unit, Remediation Unit, Thermal Oxidizer, Catalytic Oxidizer or Vapor Incinerator 1 30 ppm or 0.036 lb/mmBtu 60 ppm or 0.073

lb/mmBtu 60 ppm or 0.073

lb/mmBtu
Evaporator, Fryer, Heated Process Tank, or Parts Washer 60 ppm or 0.073 lb/mmBtu 60 ppm or 0.073

lb/mmBtu Metal Heat Treating, Metal Melting Furnace, Metal Pot, or Tar Pot 60 ppm or 0.073 lb/mmBtu 60 ppm or 0.073

lb/mmBtu 60 ppm or 0.073

lb/mmBtu Oven, Dehydrator, Dryer, Heater, Kiln, Crematory, Incinerator, Calciner, Cooker, Roaster, Furnace, or Heated Storage Tank 30 ppm or 0.036 lb/mmBtu 30 ppm or 0.036

lb/mmBtu 60 ppm or 0.073

lb/mmBtu Make-Up Air Heater or other Air Heater located outside of building with temperature controlled zone inside building 30 ppm or 0.036 lb/mmBtu

Tenter Frame or Fabric or Carpet Dryer 30 ppm or 0.036 lb/mmBtu
Other Unit or Process Temperature 30 ppm or 0.036 lb/mmBtu 30 ppm or 0.036

lb/mmBtu 60 ppm or 0.073

lb/mmBtu Liquid Fuel-Fired Equipment  800 ° F > 800 ° F and < 1200° F  1200 ° F

All liquid fuel-fired Units 40 ppm or 0.053 lb/mmBtu 40 ppm or 0.053

lb/mmBtu 60 ppm or 0.080

lb/mmBtu 1. Emission limit applies to burners in units fueled b y 100% natural gas that are used to incinerate air toxics, VOCs, or other vapors; or to heat a unit. The emission limit applies solely when burning 100% fuel and not when the burner is incinerating a ir toxics, VOCs, or other vapors. The unit shall be tested or certified to meet the emission limit w hile fueled with natural gas.Rule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 5 Table 2 – Compliance Schedule for In-Use Units
Equipment Category(ies) Compliance Date
Remediation UNIT Upon combustion modification or change of location for units manufactured prior to 1998 Beginning January 1, 2011

Tar Pot Permit Application for Change of Ownership or

New Equipment Beginning January 1, 2012

Afterburner, degassing unit, catalytic oxidizer, thermal oxidizer, vapor incinerator, evaporator, food oven, fryer, heated process tank, parts washer or spray booth make-up air heater manufactured prior to 1998 July 1, 2013

Other UNIT manufactured prior to 1986 July 1, 2010
Other UNIT manufactured prior to 1992 July 1, 2011
Other UNIT manufactured prior to 1998 July 1, 2012 Any UNIT manufactured after 1997 July 1 of the year the unit is 15 years old

(2) Unit age shall be based on the original date of manufacture and determined by: (A) Original manufacturer's identification or ratin g plate permanently fixed to the equipment. If not available, then; (B) Invoice from manufacturer for purchase of equip ment. If not available, then; (C) Information submitted to AQMD with prior permitapplications for the specific unit. If not available, then; (D) Unit is deemed by AQMD to be 20 years old.
(3) Owners or operators of units operating with flu e gas oxygen concentrations greater than 18% shall use a Distric t approved test protocol to determine compliance with the emission limit spe cified in Table 1. The test protocol shall be submitted to the District at least 90 days prior to the scheduled test and approved by the District Source Testing Division. (4) Notwithstanding the requirements of paragraph ( c)(1), units with combustion modifications completed prior to Decembe r 5, 2008 and after January 1, 2000 that resulted in replacement of mor e than 75% of the rated heat input capacity shall comply with the applicabl e emission limit specified in Table 1 of paragraph (c)(1) ten years from the date the modification was performed.Rule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 6 (5) The date a combustion modification, as specifie d in paragraphs (c)(1) and (c)(4), is performed; shall be determined according to subparagraph (c)(2)(B), if not available, then subparagraph (c)( 2)(C). (6) Notwithstanding the requirements of paragraph ( c)(1), a unit with a District permit to construct or permit to operate, and with a permit emission limit of one pound per day or less of nitr ogen oxides on July 1, 2009, shall comply with the applicable emission lim it specified in Table 1 of paragraph (c)(1) five years later than the appli cable compliance date in Table 2 of (c)(1). (7) On or after January 1, 2010, any person owning or operating a unit subject to this rule shall perform combustion system mainte nance in accordance with the manufacturer's schedule and specifications as identified in the manual and other written materials supplied by the manufacturer or distributor. The owner or operator shall maintain on site at the facility where the unit is being operated a copy of the manu facturer’s and/or
distributor's written instructions and retain a rec ord of the maintenance activity for a period of not less than three years. The owner or operator shall maintain on site at the facility where the un it is being operated a copy of the District certification or District approved source test reports, conducted by an independent third party, demonstrat ing the specific unit complies with the emission limit. The source test report(s) must identify that the source test was conducted pursuant to a Di strict approved protocol. The model and serial numbers of the spec ified unit shall clearly be indicated on the source test report(s). The own er or operator shall maintain on the unit in an accessible location a pe rmanent rating plate. The maintenance instructions, maintenance records a nd the source test report(s) or District certification shall be made a vailable to the Executive Officer upon request. (8) On or after January 1, 2011, any person owning or operating a unit subject
to this rule shall install and maintain in service non-resettable, totalizing, fuel and time meters for each unit’s fuel(s). Owne rs or operators of a unit with a combustion system that operates at only one firing rate shall install a non-resettable, totalizing, time or fuel meter fo r each fuel. (9) Meters specified in paragraph (c)(8) that requi re electric power to operate shall be provided a permanent supply of electric po wer that cannot be unplugged, switched off, or reset except by the mai n power supply circuitRule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 7 for the building and associated equipment or the un it’s safety shut-off switch. Any person operating a unit subject to thi s rule shall not shut off electric power to a unit meter unless the unit is n ot operating and is shut down for maintenance or safety. (10) On or before the compliance date, the owner or operator of a unit shall demonstrate compliance with the applicable emission limit in Table 1 pursuant to the provisions of subdivisions (d) or ( e). (11) Compliance by Certification For units that do not allow adjustment of the fuel and combustion air for the combustion system by the owner or operator, and upon approval by the Executive Officer, an owner or operator may demonst rate compliance with the emission limit and demonstration requirement of this subdivision by certification granted to the manufacturer for any m odel of equipment sold for use in the District. Any unit certified pursua nt to subdivision (e) shall be deemed in compliance with the emission limit in Table 1 and demonstration requirement of this subdivision, unle ss a District source test shows non-compliance. (12) Identification of Units (A) New Manufactured Units The manufacturer shall display the model number and the rated heat input capacity of the unit complying with subd ivision (c) on the shipping container and permanent rating plate. The manufacturer shall also display the District certif ication status on the shipping container and on the unit when applicable. (B) Modified Units The owner or operator of a unit with a modified com bustion system (new or modified burners) shall display the new rated heat input capacity on a new permanent supplemental rati ng plate installed in an accessible location. The gross hea t input shall be based on the maximum fuel input corrected for fuel heat content, temperature and pressure. Gross heat input shall b e demonstrated by a calculation based on fuel consumption recorded by an in-line
fuel meter. (13) The owner or operator shall maintain on site a copy of all documents identifying the unit’s rated heat input capacity fo r as long as the unit is retained on-site. The rated heat input capacity sh all be identified by aRule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 8 manufacturer’s or distributor’s manual or invoice a nd a permanent rating plate attached to the unit. If a unit is modified, the rated heat input capacity shall be calculated pursuant to subparagra ph (c)(12)(B). The documentation of rated heat input capacity for modi fied units shall include the name of the company and person modifying the un it, a description of all modifications, the dates the unit was modified and calculation of rated heat input capacity. The documentation for modifie d units shall be signed by the highest ranking person modifying the unit. (14) Alternate Compliance Plan Owners or operators of facilities with five or mor e in-use units with permit emission limits greater than one pound per day NOx that will require burner modifications may submit an alternate compli ance plan by July 1, 2009 to phase-in compliance of all units starting J anuary 1, 2010 and ending before January 1, 2015. At least one unit s hall be modified to comply with the applicable emission limit of this r ule by January 1, 2010. Each year thereafter, up to a maximum of four years , a minimum of 20 percent of additional units shall comply with the a pplicable emission limit. All units must comply with the applicable emission limit of this rule by January 1, 2015.

(d) Compliance Determination
(1) All emission determinations shall be calculated : (A) Using a District approved test protocol average d over a period of at least 15 and no more than 60 consecutive minutes; (B) At least 15 minutes after unit start up; and (C) In the unit’s as-found operating condition.
Each time an emission determination is required by this rule, an additional emission determination shall be made using a heat i nput of less than 25% of the rated heat input capacity for any Afterburne r, Degassing Unit, Remediation Unit, Thermal Oxidizer, Catalytic Oxidi zer, Vapor Incinerator, Make-Up Air Heater, other Air Heater l ocated outside of process building, Oven, Dehydrator, Dryer, Tenter-F rame Dryer, Fabric Dryer, Carpet Dryer, Heater, Kiln, Crematory, Incin erator, Calciner, Cooker, Roaster, non-metallurgical Furnace, or Heat ed Storage Tank thatRule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 9 operates with variable heat input that falls below 50% rated heat input capacity during normal operation.
For emission determinations after the initial appr oved test, the operator is not required to resubmit a protocol for approval if : there is a previously approved protocol and the unit has not been altered in a manner that requires a permit alteration; and rule or permit em ission limits have not changed since the previous test.
(2) All parts per million emission limits specified in subdivision (c) are referenced at 3 percent volume stack gas oxygen on a dry basis.
(3) Compliance with the NO x emission limits of subdivision (c) and determination of stack-gas oxygen and carbon dioxid e concentrations for this rule shall be determined according to the foll owing procedures: (A) District Source Test Method 100.1 – Instrumenta l Analyzer Procedures for Continuous Gaseous Emission Sampling (March 1989); or (B) District Source Test Method 7.1 – Determination of Nitrogen Oxide Emissions from Stationary Sources (March 1989 ); or (C) ASTM Method D6522-00 – Standard Test Method for Determination of Nitrogen Oxides, Carbon Monoxide, and Oxygen
Concentrations in Emissions from Natural Gas-Fired Reciprocating Engines, Combustion Turbines, Boilers, and Process Heaters Using Portable Analyzers; or (D) United States Environmental Protection Agency C onditional Test Method CTM-030 – Determination of Nitrogen Oxides, Carbon Monoxide, and Oxygen Emissions from Natural Gas-Fir ed Engines, Boilers and Process Heaters Using Portable Analyzers;
and (E) District Source Test Method 10.1 – Carbon Monox ide and Carbon Dioxide by Gas Chromatograph/Non-Dispersive Infrare d Detector (GC/NDIR) – Oxygen by Gas Chromatograph-Thermal Conductivity (GC/TCD) (March 1989); or (F) Any alternative test method determined approved before the test in writing by the Executive Officers of the District, the California Air
Resources Board and the United States Environmental Protection Agency.Rule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 10 (4) For any operator who chooses the pound per mill ion Btu of heat input compliance option of subdivision (c), NO x emissions in pounds per million Btu of heat input shall be calculated using procedures in 40 CFR Part 60, Appendix A, Method 19, Sections 2 and 3.
(5) Records of source tests shall be maintained for ten years and made available to District personnel upon request. Emis sions determined to exceed any limits established by this rule through the use of any of the test methods specified in subparagraphs (d)(3)(A) throug h (d)(3)(F) shall
constitute a violation of this rule.
(6) All emission determinations shall be made using an independent contractor to conduct the source testing that is ap proved by the Executive Officer under the Laboratory Approval Program for t he necessary test
methods.

(e) Certification (1) Unit Certification For units that do not allow adjustment of the fuel and combustion air for the combustion system by the owner or operator, any manufacturer or
distributor that distributes for sale or sells unit s or burner systems for use in the District may elect to apply to the Executive Officer to certify such units or burner systems as compliant with subdivisi on (c). (2) Manufacturer Confirmation of Emissions Any manufacturer’s application to the Executive Off icer to certify a model of equipment as compliant with the emission limit a nd demonstration requirement of subdivision (c) shall obtain confirm ation from an independent contractor that is approved by the Exec utive Officer under the Laboratory Approval Program for the necessary test methods prior to applying for certification that each unit model com plies with the applicable requirements of subdivision (c). This c onfirmation shall be based upon District approved emission tests of stan dard model units and a District approved protocol shall be adhered to duri ng the confirmation testing of all units subject to this rule. Emissio n testing shall comply with the requirements of paragraphs (d)(1) through (d)(5 ) except emission determinations shall be made at 100% rated heat inp ut capacity and an
additional emission determination shall be made usi ng a heat input of lessRule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 11 than 25% of the rated heat input capacity for any A fterburner, Degassing Unit, Remediation Unit, Thermal Oxidizer, Catalytic Oxidizer, Vapor Incinerator, Make-Up Air Heater, other Air Heater l ocated outside of process building, Oven, Dehydrator, Dryer, Tenter-F rame Dryer, Fabric Dryer, Carpet Dryer, Heater, Kiln, Crematory, Incin erator, Calciner, Cooker, Roaster, non-metallurgical Furnace, or Heat ed Storage Tank. (3) When applying for unit(s) certification, the ma nufacturer shall submit to the Executive Officer the following: (A) A statement that the model is in compliance wit h subdivision (c). The statement shall be signed and dated by the manu facturer’s responsible official and shall attest to the accura cy of all
statements; (B) General Information (i) Name and address of manufacturer, (ii) Brand name, if applicable, (iii) Model number, as it appears on the unit rati ng plate; and (iv) Rated Heat Input Capacity, gross output of bur ner(s) and number of burners; (C) A description of each model being certified; an d (D) A source test report verifying compliance with the applicable emission limit in subdivision (c) for each model to be certified. The source test report shall be prepared by the con firming independent contractor and shall contain all of the elements identified in the District approved Protocol for ea ch unit tested.
The source test shall have been conducted no more t han ninety (90) days prior to the date of submittal to the Executiv e Officer. (4) When applying for unit certification, the manuf acturer shall submit the information identified in paragraph (e)(3) no more than ninety (90) days
after the date of the source test identified in sub paragraph (e)(3)(D) and at least 120 days prior to the date of the proposed sa le and installation of any
District certified unit. (5) The Executive Officer shall certify a unit mode l which complies with the provisions of subdivision (c) and of paragraphs (e) (2), (e)(3), and (e)(4). (6) Certification status shall be valid for four ye ars from the date of approval by the Executive Officer. After the fourth year, r ecertification shall beRule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 12 required by the Executive Officer according to the requirements of paragraphs (e)(2), (e)(3), and (e)(4).

(f) Enforcement
(1) The Executive Officer may inspect certification records and unit installation, operation, maintenance, repair, combu stion modification and test records of owners, operators, manufacturers, d istributors, retailers, and installers of units located in the District, and co nduct such tests as are deemed necessary to ensure compliance with this rul e. Tests shall include emission determinations, as specified in paragraph (d)(1) to (d)(4), of a random sample of any category of units subject to t his rule.
(2) An emission determination specified under parag raph (f)(1) that finds emissions in excess of those allowed by this rule o r permit conditions shall
constitute a violation of this rule.

(g) Exemptions (1) The provisions of this rule shall not apply to units: (A) subject to the nitrogen oxide limits of Distric t Rules 1109, 1110.2, 1111, 1112, 1117, 1121, 1134, 1135, 1146, 1146.1, o r 1146.2; or (B) located at RECLAIM facilities. (2) The provisions of this rule shall not apply to charbroilers. (3) The provisions of this rule shall not apply to: (A) Flares subject to District Rule 1118; (B) Flares, afterburners, degassing units, thermal or catalytic oxidizers or vapor incinerators in which a fuel, including bu t not limited to natural gas, propane, butane or liquefied petroleum gas, is used only to maintain a pilot for vapor ignition or is u sed for five minutes or less to bring a unit up to operating tem perature; (C) Municipal solid waste incinerators with a Distr ict permit operating before December 5, 2008; (D) An afterburner or vapor incinerator with a Dist rict permit operating before December 5, 2008 that has an integrated heat exchanger that captures heat from an oven or furnace exhaust in or der to reduce fuel consumption by the afterburner or vapor incine rator; or (E) A flare, afterburner, degassing unit, remediati on unit, thermal oxidizer, catalytic oxidizer or vapor incinerator p rocess in which aRule 1147 (Cont.) (Adopted December 5, 2008)

1147 - 13 fuel, including but not limited to natural gas, pro pane, butane or liquefied petroleum gas, is mixed with air toxics, VOCs, landfill gas, digester gas or other combustible vapors prior to incineration in the unit, in order to maintain vapor concentrati on above the upper explosion limit or above a manufacturer speci fied limit in order to maintain combustion or temperature in the unit. This exemption does not apply to a burner with a separat e fuel line used to heat up or maintain temperature of a unit or inc inerate air toxics, VOCs or other combustible vapors in a gas stream mo ving past the
burner flame. (4) New afterburners, degassing units, thermal oxid izers, catalytic oxidizers, vapor incinerators, and spray booth make-up air hea ters installed for use at a specific facility after December 5, 2008 and befo re January 1, 2011, are exempt from the emission limit in Table 1 until Jul y 1 of the year the unit is 15 years old. (5) New or relocated remediation units installed af ter December 5, 2008 and before January 1, 2011, are exempt from the emissio n limit in Table 1 until a combustion modification or change of locati on on or after January 1, 2011. (6) New food ovens, fryers, heated process tanks, p arts washers, and evaporators installed after December 5, 2008 and op erating before January 1, 2013, are exempt from the emission limit in Tabl e 1 until July 1 of the year the unit is 15 years old. (7) Remediation units are exempt from the applicabl e emission limit in Table 1 while fueled with propane, butane or liquefied pe troleum gas in a location where natural gas is not available. Remed iation units must comply with the emission limit when natural gas is available and while fueled with natural gas.