SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

RULE 2014 - CHAPTER 4 - PROCESS UNITS - PERIODIC REPORTING AND RULE 219 EQUIPMENT
(Amended April 9, 1999)

TABLE OF CONTENTS

A. Monitoring, Reporting, and Recordkeeping Requirements ................... 2012A-4-1

B. Emission Calculations for Reporting Data.................... ........................ 2012A-4-2

C. Total Quarterly Emissions Calculation for all NOx Process Units
at the Facility
....................................................................................... 2012A-4-8

D. Reporting Procedures ........................................................................ 2012A-4-8

E. Fuel Meter Sharing............................................................................ 2012A-4-9

F. Rule 219 Equipment .......................................................................... 2012A-4-9

G. Substitute Data Procedures ............................................................... 2012A-4-10

Process units are one or more pieces of equipment which are listed in Table 1-C. The process units emissions are reported quarterly as shown in Table 4-A and based primarily on fuel consumption or operating time in conjunction with an emission factor. The requirements and procedures for an emission factor and election conditions for an alternative emission factor or concentration limit shall apply to process units. For equipment designated as exempt from permit in Rule 219 emissions shall be determined according to the methodology specified in this Chapter 4, subdivision F.

Process units and equipment exempt from permit as designated in Rule 219 may share fuel meters if each equipment has the same emission factor. This chapter also includes the equations describing the methods used to calculate NOx process unit emissions and the reporting procedures. The interim reporting period does not apply to process units since existing fuel metering equipment or timers shall be used starting January 1, 1994 for Cycle 1 facilities and July 1, 1994 for Cycle 2 facilities.

A. MONITORING, REPORTING, AND RECORDKEEPING
REQUIREMENTS

    1. The category-specific starting emission factor found in Table 1 of Rule 2002 - Allocations for Oxides of Nitrogen (NOx) and Sulfur (SOx) shall be used for quantifying quarterly mass emissions for a NOx process unit.

    2. The Facility Permit holder of a process unit may request a category-specific emission rate that is reliable, accurate, and representative for purposes of calculating NOx emissions. The emission rate shall be determined based on the source testing protocol specified in Chapter 5. The Facility Permit holder of a process unit may apply for a concentration limit for purposes of calculating NOx emissions.

    3. The Facility Permit holder of a process unit shall calculate the mass emissions according to the methodology specified in Paragraph 4.B.2. (totalizing fuel meters) or 4.B.3.a. (timers).

    4. The Facility Permit holder of each NOx Process Unit shall use a totalizing fuel meter or timer as applicable, as specified in the Facility Permit for each NOx process unit to measure and report the variables listed in Tables 4-A and 4-B, respectively, for each NOx process unit.

    5. Fuel flow measuring devices used for obtaining stack flow in conjunction with F-factors shall be tested, when required, as installed for relative accuracy using reference methods to determine stack flow.

    6. Fuel meters and/or timers have to be non-resettable and tamper-proof. They have to have seals installed by the meter/timer manufacturer to prove the integrity of the measuring device.

    Meters which are unsealed for maintenance or repairs shall be resealed by an authorized manufacturers representative.

    7. The Facility Permit holder of each NOx process unit shall monitor, report, and maintain the following records on a quarterly basis:

    8. The Facility Permit holder of each NOx process unit shall also provide any other data necessary for calculating the emission rates of nitrogen oxides as determined by the Executive Officer.

B. EMISSION CALCULATION FOR REPORTING DATA

    1. Quarterly Mass Emissions for Interim Periods

    Pursuant to Rule 2012 (f) (1), between January 1, 1994 and December 31, 1994 for Cycle 1 facilities, and between July 1, 1994 and June 30, 1995 for Cycle 2 facilities, the monthly emission of each process unit shall be calculated and recorded according to:

       

    r

       
    Eip =

    Undisplayed Graphic

    dj x EFsj

    (Eq.22)

       

    j=1

       
    where:
    Eip = The quarterly mass emission of nitrogen oxides for the interim period (lb/month).
    dj = The quarterly fuel usage for each type of fuel recorded as mmscf/quarter or mgal/quarter.
    EFsj = The starting emission factor used to calculate unit emissions in the initial allocation, as specified in Table 1 of Rule 2002 - Allocations for Oxides of Nitrogen (NOx) and Sulfur (SOx) (lb/mmscf, lb/mgal).
    r = The number of different types of fuel consumed per quarter.
    j = Each type of fuel.

    ________________________________________________________________

    Example calculation:
    Boiler burning natural gas, rated 6 mmBtu/hr, in
    compliance with Rule 1146
    starting year 1994


    Eip = (49.18) x (1.1)



    Applicable emission factor is also found in Volume II - Supporting Documentation, Appendix II-F - Methodology for NOx and SOx Starting and Ending Allocation Factors, Table 2-4 - Startpoint 1994 Emission Factors for Nitrogen Oxides.
    ________________________________________________________________

    2. Totalizing Fuel Meter-Based Emission Calculation

    The Facility permit holder shall use an emission factor shown in Table 1 of Rule 2002 or in Table 3-D or an approved equipment-specific or category-specific emission rate for each affected NOx Process Unit to calculate the quarterly emissions according to:

       

    r

       
    Ek =

    Undisplayed Graphic

    dj x EFj

    (Eq.23)

       

    j=1

       

    or

       

    r

       
    Ek =

    Undisplayed Graphic

    dj x Vj x ERj

    (Eq.24)

       

    j=1

       
    where:
    Ek = The quarterly emissions of nitrogen oxides (lb/month).
    dj = The quarterly fuel usage for each type of fuel recorded by the fuel totalizer (mmscf/quarter or mgal/quarter.)
    EFj = The emission factor specified in Table 1 of Rule 2002 - Allocations for Oxides of Nitrogen (NOx) and Sulfur (SOx) or specified in Table 3-D (lb/mmscf, lb/mgal). The emission factor found in Table 1 of Rule 2002 may or may not include the appropriate control efficiency.
    Vj = The higher heating value of each type of fuel (mmBtu/mmscf or mmBtu/mgal) determined by the Facility Permit holder or assigned from Table 3-D.
    ERj = The equipment-specific or category-specific emission rate; fuel-specific emission rate requested by the Facility Permit holder (lb/mmBtu).
    r = The number of different types of fuel consumed per month.

    3. Timer-Based Emission Calculations

    4. Concentration Limit based Emissions Calculations

    When the Facility Permit holder elects to use the concentration limit, the quarterly mass emission shall be calculated and recorded according to one of the following equations:

            r  
    Ek = PPMVO2 x [20.9/(20.9 - b)] x 1.195 x 10-7 x Undisplayed Graphic (Fdj x dj x Vj)
            j=1  
             

    (Eq.28a)

    where:
    Ek = The quarterly mass emission of nitrogen oxides (lb/quarter).
    PPMV O2 = The RECLAIM concentration limit as listed in the Facility Permit. (ppmv) and based on standardized oxygen concentration in the exhaust stream.
    b = The standard concentrations of oxygen as listed in the Facility Permit or as found in Table 3-F. (%).
    r = The number of different types of fuel.
    j = Each type of fuel.
    Fd j = The dry F factor for oxygen for each type of fuel, the ratio of the dry gas volume of the products of combustion to the heat content of the fuel (dscf/mmBtu) specified in 40 CFR Part 60, Appendix A, Method 19.
    dj = The quarterly fuel usage for each type of fuel recorded by the fuel totalizer (mmscf per quarter or mgal per quarter).
    Vj =

      The higher heating value of the fuel for each type of fuel found in Table 3-D (mmBtu/mmscf or mmBtu/mgal) or determined by a continuous analyzer.

    The product (dj x Vj) shall have units of mmBtu per quarter (mmBtu/quarter).

    For non-standard fuels that are not listed in 40 CFR Part 60, Appendix A, Method 19, a constant F-factor and heating value may be used if the Facility Permit holder demonstrates to the Executive Officer that the natural gas, fuel oil, or other fuels have stable F-factors and gross heating values. A stable F-factor or gross heating value is defined as not varying by more than + or - 2.5% from the proposed constant value. For the fuels listed in 40 CFR 60, Appendix A, Method 19, Table 19-1, the F-factors are assumed to be stable at the value cited in Table 19-1. Any F-factor cited in Regulation XX shall supersede the F-factor in Table 19-1. For fuels not listed in the citations above, but which the Facility Permit holder demonstrates that the source-specific F-factor meets the same stability criteria, periodic reporting of F-factor may be accepted and the adequacy of the frequency of analyses shall be demonstrated by the Facility Permit operator such that the probability that any given analysis will differ from the previous analysis by more than 5% (relative to the previous analysis) or less than 5%. Analysis records shall be maintained, including all charts and laboratory notes.

    For non-standard fuels that are not listed in 40 CFR Part 60, Appendix A, Method 19 and do not satisfy the criteria for constant F-factor and heating value, the fuels must be analyzed on a continuous basis using gas chromatographs or other continuous technique that is approved by the Executive Officer. The continuous technique employed shall be capable of providing at a minimum a reading every fifteen-minute period.

    b. If the F-factor approach for oxygen can not be used, use the F-factor approach for carbon dioxide as specified in 40 CFR Part 60, Appendix A, Method 19, except in cases where the carbon dioxide concentration is less than one volume percent dry, non-fuel sources of carbon dioxide are present (e.g., lime kilns and calciners), or non-metered sources of fuel are present (e.g., afterburners). The following equation shall be used to calculate and record nitrogen oxides mass emission rate:

        r  
Ek = PPMV CO2 x (100/%CO2) x 1.195 x 10-7 x Undisplayed Graphic (Fdj x dj x Vj)
        j=1  
         

(Eq.28b)

Where:
Ek = The quarterly mass emission of nitrogen oxides (lb/quarter).
PPMV CO2 = The RECLAIM concentration limit as listed in the Facility Permit (ppmv) and based on standardized carbon dioxide concentration in the exhaust stream.
%CO2 = The standard concentrations of stack gas carbon dioxide as listed in the Facility Permit.
r = The number of different types of fuel.
j = Each type of fuel.
Fd j = The dry F factor for carbon dioxide for each type of fuel, the ratio of the dry gas volume of the products of combustion to the heat content of the fuel (dscf/mmBtu) specified in 40 CFR Part 60, Appendix A, Method 19.
dj = The quarterly fuel usage for each type of fuel recorded by the fuel totalizer (mmscf per quarter or mgal per quarter).
Vj = The higher heating value of the fuel for each type of fuel found in Table 3-D (mmBtu/mmscf or mmBtu/mgal) or determined by a continuous analyzer.

C. TOTAL QUARTERLY EMISSIONS CALCULATION FOR ALL NOx PROCESS UNITS AT THE FACILITY

The quarterly NOx emissions of all NOx process units at the facility shall be estimated according to:

   

n

   
E =

Undisplayed Graphic

Ei

(Eq.29)

   

i=1

   
   

m

   
Ei =

Undisplayed Graphic

Ej

(Eq.30)

   

j=1

   

where:

E = The total quarterly emissions for all NOx process units

Ei = The quarterly emission of each NOx process unit (lb/quarter)

Ej = The quarterly emission of each NOx process unit per type of fuel (lb/quarter)

i = Each type of affected NOx process unit

j = Each type of fuel

m = The total number of fuels consumed for each affected NOx process unit per quarter

n = The total number of NOx process units at the facility.
___________________________________________________________________

Example Calculation:

E1 = 163.8 lb/quarter
E2 = 78 lb/quarter
E3 = 120 lb/quarter

   

n

   
E =

Undisplayed Graphic

Ei = 163.8 + 78 + 120

 

   

i=1

   

E = 361.8 lb/quarter
_________________________________________________________________

D. REPORTING PROCEDURES

    1. The emissions data in any facility with an RTU shall be reported to Central Station Computer at the end of any quarter and the data shall be computed to determine the quarterly total emissions for each source using Equations 22 through 28 as appropriate.

    2. The total fuel usage data for all NOx process units in any facility without an RTU shall be recorded in a format approved by the Executive Officer and submitted to the District as part of the Quarterly Certified Report required by Rule 2004.

    3. The Facility Permit holder of NOx process units shall maintain daily records of operation hours or quarterly usage rate for each NOx process unit.

    4. Any changes made in type of fuel used and rated capacity for each source shall be recorded by the Facility Permit holder.

    5. The Facility Permit holder of any NOx process unit that opts to monitor at the large source monitoring level shall meet the requirements set forth in "Chapter 3 Large Sources - Continuous Process Monitoring System (CPMS)".

E. FUEL METER SHARING

    1. A single totalizing fuel meter shall be allowed to measure the cumulative fuel usage for more than one equipment provided that each equipment elects for the same emission rate or emission factor as specified in the Facility Permit and that any equipment in a process unit does not use the annual heat input in order to be categorized from a large source to a process unit.

    2. One or more equipment in a process NOx unit shall be allowed to share the fuel totalizing meter with the equipment in a process NOx unit provided that each equipment elects for the same emission rate or emission factor as specified in the Facility Permit.

    3. Fuel meter sharing for the interim period shall be allowed for those equipment in a process unit with the same emission rate or emission factor.

F. RULE 219 EQUIPMENT

    1. Emission Determination And Reporting Requirements

    2. Emission Calculations

    The Facility Permit holder shall determine NOx emissions for equipment exempt under Rule 219 as follows :

       

    n

       
    E219 =

    Undisplayed Graphic

    EFRi x d i

    (Eq.31)

       

    i=1

       

    where:

    E219 = The total emissions for equipment exempt under Rule 219 estimated over a quarterly period (lb/ per quarter).

    EFRi = The equipment-specific or category-specific emission factor for each equipment exempt under Rule 219 equipment. The emission factor can be found in Table 3-D (lb/mmscf or lb/mgal).

    di = The equipment-specific or category-specific fuel usage (mmscf/ per quarter or mgal/ per quarter).

    n = The number of equipment exempt under Rule 219.

G. SUBSTITUTE DATA PROCEDURES

    1. For each process unit or process units using a common fuel meter, elapsed time meter, or equivalent monitoring device, the Facility Permit holder shall provide substitute data as described below whenever a valid quarter of usage data has not been obtained and recorded. Alternative data, based on a back-up fuel meter, elapsed time meter, or equivalent monitoring device, is acceptable for substitution if the Facility Permit holder can demonstrate to the Executive Officer that the alternative system is fully operational during meter down time and within + or - 2% accuracy. The substitute data procedures are retroactively applicable from the adoption date of the RECLAIM program.

    2. Whenever data from the process monitor is not available or not recorded for the affected equipment or when the equipment is not operated within the parameter range specified in the Facility Permit, the Facility Permit holder shall calculate substitute data for each quarter, when valid data has not been obtained, according to the following procedures.

TABLE 4-A

MEASURED VARIABLES FOR ALL NOx PROCESS UNITS

EQUIPMENT

MEASURED VARIABLES

All NOx process units

1. Fuel usage or processing/feed rate or operating time

2. Production rate;

TABLE 4-B

REPORTED VARIABLES FOR ALL NOx PROCESS UNITS

EQUIPMENT

REPORTED VARIABLES

All NOx process units

1. Quarterly mass emissions