RULE4352 SOLID FUEL 

### FIRED BOILERS, STEAM GENERATORS AND PROCESS HEATERS (Adopted September 14, 1994; Amended October 19, 1995; Amended May 18,2006) 1.0 Purpose The purpose of this rule is to limit emissions of oxides of nitrogen (NOx) and carbon monoxide (CO)from solid fuel fired boilers, steamgeneratorsand process heaters. 2.0 Applicability This rule applies to any boiler, steam generator or process heater fired on solid fuel. Heat may 

### be suppliedby liquid or gaseous fuels for start-ups, shutdowns, and during other flame stabilization periods,as deemed necessaryby the ownerloperator. 3.0 Definitions 3.1 Air Pollution Control Officer (APCO): as definedin Rule 1020 (Definitions). 3.2 ARB: CaliforniaAir Resources Board. 3.3 Block 24-hour Average: the arithmetic averageof the hourly NOx emissionrates of a unit as measured over 24 one-hour periods, daily, from 12:OO AM to 1159

### PM, excludingperiods of systemcalibration. 3.4 Boiler or Steam Generator: any combustion equipment fired drectly or indirectly with any solidfuel used to produce hot wateror steam. 3.5 British Thermal Unit (Btu): the amount of heat required to raise the temperature of onepound of water from 59°Fto 60°F at one atmosphere. 3.6 EPA: 

### UnitedStatesEnvironmentalProtectionAgency. 3.7 GaseousFuel: any fuel which is agas at standard conditions. 3.8 Heat Input: the heat of combustion released due to burning a fuel in a unit, based on the higher heating value of the fuel, not including the sensible heat of incoming combustionair andfuel. 3.9 HigherHeating Value (hhv): the total heat liberated per mass of fuel burned (Btu per pound), when fuel and 

### dry air at standard conditions undergo complete combustion and all resulting products are brought to their standard states at standard conditions. 3.10 LiquidFuel: any fuel which is aliquid at standard conditions.

SJVUAPCD3.11 Potential to Emit: as defined in Rule 2201 (New and Modified Stationary Source Rule). 3.12 Process Heater: any combustion equipment fired on solid fuel, which transfers heat from combustion gases to water or process streams. Process heaters excludekilns or ovensused fordrying,balung,cooking, calcining,heat treatingor vitrifying. 3.13 NOx Emissions: the sum of oxides of nitrogen (NO) in the flue gas, collectively expressedas nitrogen dioxide. 3.14 Rated Heat Input: Rated Heat Input (million Btu per hour): the heat input capacity specifiedon the nameplate of the unit. 

### If the unit has been physically modified such that its maximum heat input differs from what is specified on the nameplate, the modified maximum heat input shall be considered as the rated heat input and made enforceableby Permit to Operate. 3.15 Shutdown:the period of time during which a unit is taken from operational to nonoperational status by allowing it to cool down from its operating temperature and pressureto an ambient temperature. 3.16 Solid Fuel: anyfuel which is a solidat standard conditions. 3.17 Standard Conditions:defined in Rule 1020(Definitions). 3.18 Start-up: the period of time during which a unit is heated to the operating temperatureand pressure from a shutdown status. 3.19 Stationary Source: as defined in Rule 2201 (New and Modified Stationary Source Review Rule). 3.20 Unit: any boiler, steam generator or process heater as defined in this rule. For the purpose of this rule, two boilers, two steam generators, or two process heaters may be considered as one unit, if, they are operated as one single unit sharing a single common stack andhave been issued only oneDistrict Permit to Operate (PTO). 4.0 Exemptions Except for complying with the recordkeeping requirements of Section 

### 6.2 and applicable compliance schedulein Section 7.0,this rule shall not apply to units operated at a Stationary Source that has a potential to emit less than 10tons per year of oxides of nitrogen (NOx)or volatile organic compounds (VOC). 5.0 Requirements 5.1 The ownerloperatorof a boiler, steam generator or process heater shall not operate such a unit in a manner that results in NOx and CO emissions exceeding the limits specified in Table 1. The emission limits measured in parts per million by volume

SJVUAPCD 4352 - 2 5118/06(ppmv) are referenced at dry stack gas conditions and shall be corrected to the applicable percent O2or C02specified in Table 1 in accordance with EPA Method 19. Table 1- NOx and COEmission Limits

December31,2006 on and afterJanuary 1,2007

310ppmv corrected

5.2 All NOx and CO emission limits shall be based on a block 24-hour average. A violation of the emission limits as measured by the test methods listedin Section 6.4 shall constitutea violation of this rule. 5.3 Start-up and Shutdown Provisions The applicable emission limits of Section 5.1 shall not apply during start-up or shutdown provided an operator complieswith the requirements specified below. 5.3.1 The duration of each shutdown shall not exceedtwelve (12)hours, except as provided in Section 5.3.4. 5.3.2 Except as provided in Section 5.3.4, the duration of each start-up shall not exceed 96 hours. 

### If curing of the refractory is required after a modification to the unit is made, the duration of start-up shall not exceed 192 hours, except as provided in Section 5.3.4. 5.3.3 The emission control system shall be in operation and emissions shall be minimized insofar as technologicallyfeasibleduring start-upor shutdown. 5.3.4 Notwithstanding the requirements of Section 5.3.1 or Section 5.3.2, the APCO, 

### ARB, and EPA may approve a longer start-upor shutdown duration,

SJVUAPCDif an operatorsubmits an applicationfor a Permit to Operate which provides ajustification forthe requested additionalduration. 5.3.4.1 The maximum allowable duration of start-up or shutdown will be determinedby the APCO, ARB, and EPA. 5.3.4.2 At a minimum, ajustification for increased start-up or shutdown duration shall include the following: 5.3.4.2.1 A clear identification of the control technologies or strategies to be utilized; and 5.3.4.2.2 A description of what physical conditions prevail during start-up or shutdown periods that prevent the controls frombeing effective;and 5.3.4.2.3 A reasonably precise estimate as to when the physical conditions will have reached a state that allows for the effective control of emissions;and 5.3.4.2.4 A detailed list of activities to be performed during start-up or shutdown and a reasonable explanation for the length of time needed to complete each activity; and 5.3.4.2.5 A description of the material process flow rates and system operating parameters, etc., the ownerloperator plans to evaluate during the process optimization; and an explanation of how the activities and process flow affect the operation of the emissions control equipment; and 5.3.4.2.6 Basis for the requested additional duration of startup or shutdown. 5.4 Units operated atless than 50percent of rated heat input 

### (RHI) Notwithstanding the requirements of Section 5.1, the APCO, ARB, and EPA may approve an increased emission limit if the ownerloperatorsubmitsan applicationfor a Permit to Operate, which provides a justification for the requested limit. Operations above50percent of

### RHI shall comply with the emission limits in Section 5.1. 5.4.1 Themaximum NOx or CO emission limit for operations less than 50percent of RHIwill be determinedby the APCO,ARB, and EPA.

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### 5.4.2 At a minimum, ajustification for an increased emission limit shall include the following: 5.4.2.1 Thebasis forthe requested increased emission limit; and 5.4.2.2 A 

### clear identification of the control technologies or strategies to be utilized; and 5.4.2.3 A 

### description of what physical conditionsprevail at less than 50% of RHI that prevent the controls from being completely effective; and 5.4.2.4 A reasonably precise estimate as to when the physical conditions must be reached that allows for the effective control of emissions; and 5.4.2.5 A 

### detailed list of activities to be performed to control emissions and a reasonable explanation for the length of time needed to complete each activity; and 5.4.2.6 A 

### description of the material process flow rates and system operating parameters, etc., the ownerloperator plans to evaluate during the process optimization; and an explanation of how the activities and process flow affect the operation of the emissions control equipment. 5.5 Monitoring Provisions The ownerloperator of any unit using ammonia injection as a NOx control technique, shall operate a Continuous Emissions Monitoring system (CEM) to monitor and record NOx 

### concentrations, C02 or O2concentrations, as well as the NOx emission rate. Continuous Emission Monitoring systems shall be operated, maintained, and calibrated pursuant to the requirements of 40 CFR 60.7 (c) 

### and 60.13. CEMs must also satisfy the Performance Specifications of 40 CFR 60 Appendix 

### B and the RelativeAccuracy Test Audit of Appendix 

### F.

6.0 Administrative Requirements 6.1 Emission Control Plan The ownerloperator of any unit subject to the provisions of this rule shall submit to the APCO an emissions control plan of all actions to be taken to satisfy the requirements of Section 5.0. Such plan shall identify the type of emission controls to be applied to each unit and a construction schedule, or shall provide source tests,

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### 5 5118106

### in accordance with Section 6.4, sufficientto demonstratethat the unit is currently in compliance with the emission limits of this rule. 6.2 Recordkeeping 6.2.1 Except for municipal solid waste (MSW) 

### fired units; the ownerloperator of any unit subject to the requirements of this rule shall maintain, on a monthly basis, an operatinglog foreach unit that includesthe following information: 6.2.1.1 type and quantityof fuel used. 6.2.1.2 the higher heating value (hhv) of each fuel as determined by Section 6.4,or as certifiedby a third party fuel supplier. 6.2.2 Therecords required by Section 6.2.1 shall be retained on site for aperiod of five years, and shall be made available to the APCO, ARB, and EPA upon request. 6.3 Compliance SourceTesting 6.3.1 Each unit subjectto the requirements of this rule shall be tested at least once every twelve (12) months, to determine compliance with the applicable requirements of Section 5.0. 6.3.2 All emission measurements shall be made with the unit operating either at conditions representative of normal operations or conditions specified in the Permit to Operate. 6.3.3 No compliance determination shall be established within two hours after a period in which fuel flow to the unit is zero, or is shut off for 30 minutes or longer.

6.4 Test Methods 6.4.1 Compliance with the requirements of Section 

### 5.0 shall be determined in accordance with the following source test procedures unless otherwise approvedby the APCO, ARB, 

### andEPA: 6.4.1.1 Oxides of nitrogen (ppmv) - 

### EPA Method 7E, 

### or ARB 

### Method 100. 6.4.1.2 Carbon monoxide (ppmv) -

### EPA Method 10,or 

### ARB Method 100.

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### 6.4.1.3 Stack gas oxygen -

### EPAMethod 3 or 3A, or 

### ARB Method 100. 6.4.1.4 NOx emission rate (Heatinput basis) -

### EPA Method 19. 6.4.1.5 Stack gas velocities - 

### EPA Method 2. 6.4.1.6 Stack gas moisture content -

### EPA Method4. 6.4.1.7 Solid fuel higher heating value (hhv) - 

### ASTM Method D 2015-96, or 6.4.1.8 Solid fuel higher heating value (hhv) - 

### ASTMMethod

### E 71

### 1-87. 6.4.1.9 ASTM D 1826-94 or D 1945-96 in conjunction with ASTM D 3588-98 forgaseous fuels. 7.0 Compliance Schedule 7.1 Owners/operators of eachunit subjectto the provisions of this rule shall demonstrate compliance in accordancetothe following schedule: 7.1.1 For units at a stationary sourcethat has the potential to emit 10 to 50tons per year of NOx or VOC: On and after January 

### 1, 2007, demonstrate compliance with the Table 

### 1 Tier 2emissions limits and all applicable requirements of this rule. 7.1.2 For units at a stationary source that has the potential to emit greater than or equal to 50tons per year of NOx or VOC: 7.1.2.1 By March 14, 1995, submitto the APCO an emission control plan pursuant to Section 6.1and a completeapplication for an Authority to Construct (ATC),if necessary. 7.1.2.2 By May 3

### 1, 1995,demonstrate full compliancewith Table 

### 1 Tier 

### 1 emission limits and all applicable requirements of this rule. 7.1.2.3 On and after January 

### 1,2007, demonstrate compliance with Table 1 

### Tier 2 emissions limits and all applicable requirements of this rule. 7.1.3 For units exempted pursuant to Section 4.0, on and after January 1, 

### 2007 comply with the recordkeeping requirements of Section6.2.

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