SCAQMD RULE 2012-2 MAJOR SOURCES/CONTINOUS EMISSION MONITORING SYSTEM
LAST REVISED 11/11/11

C H A P T E R 2



M A J O R S O U R C E S - C O N T I N U O U S

E M I S S I O N M O N I T O R I N G S Y S T E M

( C E M S )

TABLE OF CONTENTS

CHAPTER 2 - MAJOR SOURCES - CONTINUOUS EMISSION MONITORING SYSTEM (CEMS)

A. Measurement Requirements 8

B. Monitoring Systems 10

C. Reporting Procedures 22

D. Alternative Procedures for Emission Stack Flow Rate Determination 24

E. Missing Data Procedures 26

F. Time-Sharing 29

G. Emissions During Startup or Shutdown Periods 30

Between January 1. 1994 and December 31, 1994 (Cycle 1 facilities) and between July 1, 1994 and June 30, 1995 (Cycle 2 facilities), major sources shall be allowed to use an interim reporting procedure to measure and record NOx emissions on a monthly basis according to the requirements specified in Chapter 3 "Large Sources - Continuous Process Monitoring System (CPMS)" or by extracting NOx emission data from existing District certified continuous emissions monitoring system (CEMS). Chapter 2, Subdivision C, Paragraph 1 specifies the requirements for this interim period. On and after January 1, 1995 (Cycle 1 facilities) and July 1,1995 (Cycle 2 facilities), the Facility Permit holder of each major source shall report the daily NOx emissions by 5:00 p.m. of the following day and comply with all other applicable requirements (except Chapter 2, Subdivision C, Paragraph 1) specified in this chapter.

The Facility Permit holder of a source that is required to install CEMS may request the Executive Officer to approve an alternative monitoring device (or system components) to quantify the emissions of NOx. The applicant shall demonstrate to the Executive Officer that the proposed alternative monitoring device is at a minimum equivalent in relative accuracy, precision, reliability, and timeliness to a CEMS for that source, according to the criteria specified in 40 CFR Part 75 Subpart E. In lieu of the criteria specified in 40 CFR Part 75 Subpart E, substitute criteria is acceptable if the applicant demonstrates to the Executive Officer that the proposed alternative monitoring device is at minimum equivalent in relative accuracy precision, reliability, and timeliness to a CEMS for that source. Upon approval by the Executive Officer, the substitute criteria shall be submitted to the federal Environmental Protection Agency as an amendment to the State Implementation Plan (SIP).

A. MEASUREMENT REQUIREMENTS

1. The Facility Permit holder of each major NOx equipment shall install, calibrate, maintain, and operate an approved CEMS to measure and record the following:

a. Nitrogen oxide concentrations in the gases discharged to the atmosphere from affected equipment;

b. Oxygen concentrations, at each location where nitrogen oxide concentrations are monitored, if required for calculation of the stack gas flow rate;

c. Stack gas volumetric flow rate. An in-stack flow meter may be used to determine mass emissions to the atmosphere from affected equipment, except:

i. when more than one affected piece of equipment vents to the atmosphere through a single stack; or

ii. during periods of low flow rates when the flow rate is no longer within the applicable range of the in-stack flow meter.

d. In lieu of complying with Chapter 2, Subdivision A, Paragraph 1, Subparagraph c, if heat input rate is needed to determine the stack gas volumetric flow rate, the Facility Permit holder shall include in the CEMS calculations the Fd factors listed in 40 CFR Part 60, Appendix A, Method 19, Table 19-1. The Facility Permit holder shall submit data to develop Fd factors when alternative fuels are fired and obtain the approval of the Executive Officer for use of the Fd factors before firing any alternative fuel.

e. All applicable variables listed in Table 2-A.

f. The Facility Permit holder shall also provide any other data necessary for calculating air contaminant emission rates as determined by the Executive Officer.

g. The data generated from a monitoring system for parameters listed in subparagraphs a, b, c and d shall be recorded both by strip chart recorders and computer printout. The strip chart shall have a minimum chart width of 10 inches, a readability of 0.5% of the span, and a minimum of 100 chart divisions.

2. The Facility Permit holder shall by March 31, 1994 for Cycle 1 facilties and September 30, 1994 for Cycle 2 facilities, submit a CEMS plan to the Executive Officer for approval. The plan shall contain at a minimum the following items:

a. A list of all major sources which will have CEMS installed.

b. Details of the proposed Continuous Emission Monitors as well as the proposed flow monitors for each affected source.

c. Details of the Quality Control/Quality Assurance Plan for the CEMS.

d. Proposed range of each CEMS and the expected concentrations of pollutants for each source.

e. Date by which purchase order for each system will be issued.

f. Construction schedule for each system, and date of completion of installation.

g. Date by which CEMS certification test protocol will be submitted to the District for approval for each system.

h. Date by which certification tests will be completed for each system.

i. Date by which certification test results will be submitted for review by the District, for each system.

j. Any other pertinent information regarding the installation and certification for each system.

If a CEMS plan is disapproved in whole or in part, the District staff will notify the Facility Permit holder in writing and the Facility Permit holder shall have 30 days from the date it receives the notice from the District to resubmit its plan.

3. The variables listed in Table 2-A shall be measured and recorded at the facility to determine mass emission and track the operation of basic and control equipment. The variables listed in Table 2-B shall be reported to the District's NOx Central Station Computer. Alternatives indicated in Tables 2-A and 2-B indicate choices which shall be specified in the Facility Permit for that equipment.

4. As part of the Facility Permit Application review, the Executive Officer may modify the list of Facility Permit holder-selected tracking variables.

5. Data on Facility Permit holder selected variables shall be made available to the District staff upon request.

6. Source tests shall be performed by testing firms/laboratories who have received approval from the District by going through the District's laboratory approval program.

7. All Relative Accuracy Test Audits (RATA) shall be performed by testing firms/laboratories who have received approval from the District by going through the District's laboratory approval program.

8. Whenever EPA Protocol 1 gases are not available because National Institute for Standards and Testing (NIST) does not produce Standard Reference Materials (SRM's) for these gases at the appropriate concentration, EPA Protocol 2 (use of gas dilution systems) may be used to certify calibration gas standards. In the case where no SRM's are available, the facility can submit a gas calibration protocol for approval, which specifies the steps to be taken for analyzing the concentration and stability of calibration gases.

B. MONITORING SYSTEMS

1. Information Required for Each 15-Minute Interval

All CEMS for affected equipment shall, at a minimum, generate and record the following data points once for each successive 15-minute period on the hour and at equally spaced intervals thereafter:

a. Nitrogen oxides concentration in the stack in units of ppmv;

b. Oxygen concentration or carbon dioxide concentration in the stack in units of percent;

c. Volumetric flow rate of stack gases in units of dry or wet standard cubic feet per hour (dscfh or wscfh). For affected equipment standard gas conditions are defined as a temperature at 68°F and one atmosphere of pressure;

d. Fuel flow rates in units of standard cubic feet per hour (scfh) for gaseous fuels or pounds per hour (lb/hr) for liquid fuels if EPA Method 19 is used to calculate the stack gas volumetric flow rate;

e. Nitrogen oxide mass emission in units of lb/hour. The nitrogen oxide mass emissions is calculated according to the following:

ei = ai x ci x 1.195 x 10-7 (Eq. 1)

where:

ei = The mass emissions of nitrogen oxides in pounds per hour.

ai = The stack gas concentration of nitrogen oxides on a dry basis (ppmv).

ci = The stack gas volumetric flow rate (dscfh).


Example Calculation:

ai = 40 ppm
ci = 150,000 dscfh
ei = 40 x 150,000 x 1.195 x 10-7
ei = 0.72 lb/hr


When the CEMS uses the heat input rate and oxygen concentration to determine the nitrogen oxide mass emissions, the following equation shall be used to calculate the emissions of nitrogen oxides:

r

ei = ai x [20.9/(20.9 - bi)] x 1.195 x 10-7 x ð (Fdij x dij x Vij) (Eq. 2)

j=1

where:

ei = The mass emissions of nitrogen oxides in pounds per hour

ai = The stack gas concentration of nitrogen oxides on a dry basis (ppmv)

bi = The stack gas concentrations of oxygen on a dry basis (%)

r = The number of different types of fuel

Fdij = The dry F factor 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/106 Btu)

dij = The fuel flow rate for each type of fuel measured every 15-minute period

Vij = The higher heating value of the fuel for each type of fuel

The product (dij x Vij) shall have units of millions of Btu per hour (106 Btu/hr).

Equation 2 may not be used in cases where enriched oxygen is used, non-fuel sources of carbon dioxide are present (e.g., lime kilns and calciners), and the oxygen content of the stack gas is 19 percent or greater.


Example Calculation:

ai = 40 ppm
bi = 3.5%
Fdij = 8710 dscf/106 Btu
dij = 5,000 dscf
Vij = 1050 Btu/scf or 1050 mmBtu/mmscf

r
ei = ai x [20.9/(20.9 - bi)] x 1.195 x 10-7 x ð (Fdij x dij x Vij)
j=1

ei = 40 x [20.9/(20.9 - 3.5)] x 1.195 x 10-7 x [8710/106 x 5000 x 1050]
ei = 0.26 lb/hr


When the CEMS uses the heat input rate and carbon dioxide concentration to determine the nitrogen oxide mass emissions, the following equation shall be used to calculate the emissions of nitrogen oxides:

r

ei = (ai/ti) x 100 x 1.195 x 10-7 x ð (Fdij x dij x Vij) (Eq. 3)

j=1

where:

ei = The mass emissions of nitrogen oxides in pounds per hour.

ai = The stack gas concentration of nitrogen oxides on a dry basis (ppmv).

ti = The stack gas concentrations of carbon dioxide on a dry basis (%).

r = The number of different types of fuel.

Fcij = The carbon-based, dry F factor for each type of fuel, the ratio of the dry gas volume of carbon dioxide to the heat content of the fuel (dscf/106 Btu).

dij = The fuel flow rate for each type of fuel measured every 15-minute period.

Vij = The higher heating value of the fuel for each type of fuel.

The product (dij x Vij) shall have units of millions of Btu per hour (106 Btu/hr).


Example Calculation:

ai = 40 ppm
ti = 11.0%
Fcij = 1040 scf/106 Btu
dij = 5,000 dscf
Vij = 1050 Btu/scf or 1050 mmBtu/mmscf

r
ei = ai/ti x 100 x x 1.195 x 10-7 x ð (Fcij x dij x Vij)
j=1

ei = 40/11.0 x 100 x 1.195 x 10-7 x [1040 x 5000 x 1050 x 10-6]
ei = 0.24 lb/hr


f. All measurements for concentrations and stack gas flow rates, and selection of F factor shall be made on a consistent wet or dry basis.

g. CEMS status. The following status codes shall be used to report the CEMS status:

1-1 VALID DATA

2-2 CALIBRATION

3-3 OFF LINE

4-4 ALTERNATE DATA ACQUISITION

(e.g., manual sampling)

5-5 OUT OF CONTROL

6-6 FUEL SWITCH

(e.g., gas to oil, coke to coal)

2. Hourly Calculations

The hourly average stack gas concentrations of nitrogen oxides and oxygen, the stack gas volumetric flow rate, the fuel flow rate and the emission rate of nitrogen oxides shall be calculated for each equipment as follows:

n

ð ai

i=1

A = (for NOx concentration) (Eq. 4)

n

n

ð bi

i=1

B = (for O2 concentration) (Eq. 5)

n

n

ð ci

i=1

C = (for stack gas volumetric flow rate) (Eq. 6)

n

n

ð di

i=1

Di = (for fuel flow rates) (Eq. 7)

n

Calculate D for each type of fuel firing separately.

n

ð ei

i=1

Ek = (for NOx emissions) (Eq. 8)

n

All concentrations and stack gas flow rates shall be calculated on a consistent wet or dry basis.

where:

A = The hourly average stack gas concentration of nitrogen oxides (ppmv)

ai = The measured stack gas concentrations of nitrogen oxides (ppmv)

B = The hourly average oxygen stack concentration (%)

bi = The measured stack gas concentrations of oxygen (%)

C = The hourly average stack gas flow rate (dscfh)

ci = The measured stack gas volumetric flow rates (dscfh)

D = The hourly average fuel flow rates, for each type of fuel (appropriate units of volumetric flow rate for each type of fuel, e.g., scfh, gal/hr, lb/hr, bbl/hr, liters/hr, etc.)

di = The measured fuel flow rates for each type of fuel (appropriate units of volumetric flow rate for each type of fuel, e.g., scfh, gal/hr, lb/hr, bbl/hr, etc.)

Ek = The hourly average emissions of nitrogen oxides (lb/hr)

ei = The measured mass emissions of nitrogen oxides in pounds per hour

n = Number of valid data points during the hour

The values of A through Ek shall be recorded for each affected piece of equipment.

3. Daily Calculations

a. Daily mass emissions calculation

The daily emissions of nitrogen oxides shall be calculated and recorded for each affected NOx source using the following procedure:

N P Q S

G = ð Ek + ð Em + ð Est + ð Esh (Eq. 9)

k=1 m=1 o=1 r=1

where:

G = The daily emissions of nitrogen oxides (lb/day)

Em = The hourly average emissions of nitrogen oxides using substitute data (see Chapter 2, Subdivision B, Paragraph 5, Subparagraph b and Chapter 2 Subdivision F)(lb/hr)

Ek = The hourly average emissions of nitrogen oxides using data recorded by CEMS (lbs/hr)

Est = The hourly average emissions of nitrogen oxides during startup (lb/hr) (see Chapter 2 Subdivision G)

Esh = The hourly average emissions of nitrogen oxides during shutdown (lbs/hr) (see Chapter 2 Subdivision G)

N = Number of hours of valid data (see Chapter 2, Subdivision B, Paragraph 5) from the CEMS coinciding with the source operating hours

P = Number of hours using substitute data when the source is operating

Q = The number of hours during startup period

S = The number of hours during shutdown period

and,

M = Number of operating hours of the source during the day.

Note that: M = N + P + Q + S


Example Calculation:

Ek = 0.5 lb/hr Est = 0 lb/hr Q = 0 hr
Em = 0.7 lb/hr Esd = 0 lb/hr S = 0 hr
N = 21 hr
P = 3 hr
M = 24 hr
G = (0.5 lb/hr)(21 hr/day) + (0.7 lb/hr)(3 hr/day) +
(0 lb/hr)(0 hr/day)+ (0 lb/hr)(0 hr/day)
G = 10.5 + 2.1 = 12.6 lb/day


4. Operational Requirements

The CEMS shall be operated and data recorded during all periods of operation of the affected NOx source including periods of start-up, shutdown, malfunction or emergency conditions, except for CEMS breakdowns and repairs. Calibration data shall be recorded during zero and span calibration checks, and zero and span adjustments. For periods of hot standby the Facility Permit holder may enter a default value for NOx emissions. Before using any default values the Facility Permit holder shall obtain the approval of the Executive Officer and must include in the CEMS applications or CEMS plans the estimates of NOx emissions, the NOx concentrations, the oxygen concentrations, and the fuel input rates or the stack gas volumetric flow rates during hot standby conditions. The Executive Officer will disapprove those emission values which do not correspond to hot standby conditions.

5. Requirements for Valid Data Points

Valid data points are data points from the CEMS which meet the requirements of Chapter 2, Subdivision B, Paragraph 16 or are obtained by the methods indicated in Chapter 2, Subdivision B, Paragraph 6 and Chapter 2, Subdivision B, Paragraph 7.

a. Each CEMS and component thereof shall be capable of completing a minimum of one cycle of operation (sampling, analyzing and data recording) for each successive 15-minute interval. All NOx concentration, volumetric flow, and NOx emission rate data shall be reduced to 1 hour averages. These averages shall be equally computed from four or more data points equally spaced over each 1 hour period, except for periods of calibration, quality assurance activities, CEMS maintenance, or CEMS repair. During these periods a valid hour shall consist of at least two data points with each representing a 15-minute period and a cycle of operation as described above, provided the number of these periods does not exceed four per day.

b. Failure of the CEMS to acquire the required number of valid data points shall result in the loss of such data for the entire hour and the Facility Permit holder shall record and report data by means of the data acquisition and handling system for the missing hour in accordance with the applicable procedures for substituting missing data in the Missing Data Procedures in Chapter 2 Subdivision E of this document.

6. Alternative Data Acquisition Using Reference Methods

a. When valid nitrogen oxides emission data is not collected by the permanently installed CEMS, emission rate data may be obtained using District Methods 7.1 or 100.1 (for NOx concentration in the stack gas) in conjunction with District Methods 1.1, 2.1, 3.1, and 4.1 or by using District Methods 7.1 or 100.1 in conjunction with District Method 3.1 and EPA Method 19. For District Method 7.1 a minimum of 12 samples, equally spaced over a one-hour period, shall be taken. Each sample shall represent the five-minute period in which it was taken.

b. If the Facility Permit holder chooses to use a standby CEMS (such as in a mobile van or other configuration), to obtain alternative monitoring data at such times when the permanently installed CEMS for the affected source(s) cannot produce valid data, then the standby CEMS is subject to the following requirements:

i. Standby CEMS shall be equivalent in relative accuracy, reliability, reproducibility and timeliness to the corresponding permanently installed CEMS.

ii. The Facility Permit holder shall submit a standby CEMS plan to the District for review prior to using the standby CEMS.

iii. District acceptance of standby CEMS data shall be contingent on District approval of the plan.

iv. The use of standby CEMS shall be limited to a total of 6 months for any source(s) within a calendar year.

v. The Facility Permit holder shall notify the District within 24 hours if the standby CEMS is to be used in place of the permanently installed CEMS.

vi. During the first 30 days of standby CEMS use, the Facility Permit holder shall conduct a Certified Gas Audit (CGA) of the standby CEMS.

vii. The Facility Permit holder shall notify the District within the 30-day period if the standby CEMS shall be used longer than 30 days.

viii. After the first 30 days of using the standby CEMS , the Facility Permit holder shall conduct at least one RATA of the standby CEMS and the RATA shall be conducted within 90 days of the initial use of the standby CEMS.

ix. All RATA and certification tests shall be performed by testing firms/laboratories who have received approval from the District by going through the District's laboratory approval program.

x. Immediately prior to obtaining data from the source(s) to be monitored, the standby CEMS shall be quality assured in accordance with District Method 100.1

7. Alternative Data Acquisition Using Process Curves or Other Means

Process curves of NOx emission rates or other alternative means of NOx emission rate data generation may be used to obtain nitrogen oxides emission data, provided the Facility Permit holder has obtained the approval of the Executive Officer prior to using alternate means of NOx emission rate data generation. The process curves and the alternate means of NOx emission data generation mentioned in this paragraph shall not be used more than 72 hours per calendar month and may only be used if no CEMS data or reference method data gathered under Chapter 2, Subdivision B, Paragraph 6 is available. Process curves may be used on units which have air pollution control devices for the control of nitrogen oxides emissions provided the Facility Permit holder submits a complete list of operating conditions that characterize the permitted operation. The conditions will be specified in the Facility Permit for that equipment. The process variables specified in the Facility Permit conditions shall be monitored by the source.

8. Span Range Requirements for NOx Analyzers

Full scale span ranges for the NOx analyzers at each source shall be set on an individual basis. The full scale span range of the NOx analyzers shall be set so that all the data points gathered by the CEMS lie within 20-95 percent of the full-scale span range.

9. Calibration Drift Requirements

The CEMS design shall allow determination of calibration drift (both negative and positive) at zero-level (0 to 20 percent of full scale) and high-level (80 to 100 percent of full scale) values. Alternative low-level and high-level span values may be allowed with the prior written approval of the Executive Officer.

10. Relative Accuracy Requirements for Stack Gas Volumetric Flow Measurement Systems

The stack gas volumetric flow measurement system shall meet a relative accuracy requirement of being less than or equal to 10 percent of the mean value of the reference method test data in units of dscfh. Relative accuracy is calculated by the equations in Section 8 of 40 CFR Part 60, Appendix B, Performance Specification 2. The volumetric flow measurement system shall also meet the specifications in Appendix B of these protocols. The District recommends (but does not require) performing a flow profile study following the procedures in 40 CFR, Part 60, Appendix A, Test Method 1.1, Section 2.5 to determine the acceptability of the potential flow monitor location and to determine the number and location of flow sampling points required to obtain a representative flow value.

11. Relative Accuracy Requirements for Emission Measurement

The emission measurement shall meet a relative accuracy requirement of being less than or equal to 20 percent of the mean value of the reference method test data in units of lb/hr. Relative accuracy is calculated by the equations in Section 8 of 40 CFR, Part 60, Appendix B, Performance Specification 2. The emission rate measurement shall also meet the specifications in Attachment-B of this document.

12. Certification Requirements for Analyzers

The portion of the CEMS which samples, conditions, analyzes, and records the nitrogen oxides and oxygen concentrations in the stack gas shall be certified according to the specifications in 40 CFR, Part 60, Appendix B, Performance Specifications 2 and 3. Units using monitors with more than one span range must perform the calibration error test on all span ranges. This portion of the CEMS shall also meet the specifications in Attachment B (BIAS TEST) of these protocols.

13. Provisional Approval

The Facility Permit holder of a major source shall submit, certification test results and supporting documents to the District for each CEMS by December 31, 1994 for Cycle 1 facilities and June 30, 1995 for Cycle 2 facilities. The Facility Permit holder shall certify that the results show that the CEMS has met all the requirements of the protocol if its submission is after August 31, 1994. Upon receipt of the test results and the certification that the CEMS is in compliance, the District will issue a Provisional Approval.

After the Provisional Approval, all the data measured and recorded by the CEMS will be considered valid quality assured data, (retroactive to January 1, 1995) provided that the Executive Officer does not issue a notice of disapproval of final certification. Final certification of the CEMS will be granted if the certification test results show that the CEMS has met all the requirements of the protocol.

In the case where the test results show that the CEMS does not meet all the requirements of the rule, the Executive Officer will disapprove the final certification. If this occurs, the previously considered valid data from January 1, 1995 will be replaced by data as specified in the "Missing Data" section of the protocol. This procedure shall be used until the time that new certification test results are submitted, and the CEMS has received final approval by the District.

14. Sampling Location Requirements

Each affected piece of equipment shall have sampling locations which meet the "Guidelines for Construction of Sampling and Testing Facilities" in the District Source Test Manual. If an alternate location (not conforming to the criteria of eight duct diameters downstream and two diameters upstream from a flow disturbance) is used, the absence of flow disturbance shall be demonstrated by using the District method in the Source Test Manual, Chapter X, Section 1.4, or 40 CFR, Part 60, Appendix A, Method 1. Section 2.5 and the absence of stratification shall be demonstrated using District method in the Source Test Manual, Chapter X, Section 13.

15. Sampling Line Requirement

The CEMS sample line from the CEMS probe to the sample conditioning system shall be heated to maintain the sample temperature above the dew point of the sample. This requirement does not apply to dilution probe systems where no sample condensation occurs.

16. Recertification Requirements

The District will reevaluate the monitoring systems at any affected piece of equipment where changes to the basic process equipment or air pollution control equipment occur, to determine the proper full span range of the monitors. Any monitor system requiring change to its full span range in order to meet the criteria in Chapter 2, Subdivision B, Paragraph 8 shall be recertified according to all the specifications in Chapter 2, Subdivision B, Paragraphs 10, 11, and 12 , as applicable, including the relative accuracy tests, the calibration drift tests, and the calibration error tests. A new CEMS application shall be submitted for each CEMS which is reevaluated.

The recertification for any existing CEMS shall be completed within 90 days of the start-up of newly changed or modified equipment monitored by such CEMS. The Facility Permit holder shall calculate and report NOx emission data for the period prior to the CEMS recertification by means of the automated data acquisition and handling system according to the following procedures:

a. For any CEMS which is recertified within 90 days of start-up of the newly modified equipment, the emission data recorded by the CEMS prior to the recertification would be considered valid and shall be used for calculating and reporting NOx emissions for the equipment it serves.

b. For any CEMS which is not recertified within 90 days of start-up of the newly modified equipment, the 90th percentile emission data (lbs per day) for the previous 90 unit operating days recorded by the CEMS prior to the recertification shall be used for calculating and reporting NOx emissions for the equipment it serves.

17. Quality Assurance Procedures for Analyzers

The quality assurance and quality control requirements for analyzers, flow monitors, and NOx emission rate systems are given in Attachment C (QUALITY ASSURANCE AND QUALITY CONTROL PROCEDURES) of these protocols. The quality assurance plans required by Attachment C of these protocols shall be submitted along with the CEMS certification application to the District for the approval of the Executive Officer . Source test and monitoring equipment inspection reports required by the Protocols shall be kept on-site for at least three years. The reference method tests are those methods in Chapter 8 - Reference Methods of these protocols. Any CEMS which is deemed out-of-control by Attachment C of these protocols shall be corrected, retested by the appropriate audit procedure, and restored to in-control condition within 24 hours after being deemed out-of-control. If the CEMS is not in-control at the end of the 24-hour period, the CEMS data shall be gathered using the methods in Chapter 2, Subdivision B, Paragraph 6 and Chapter 2, Subdivision B, Paragraph 7 of these requirements or using the Missing Data Procedures in Chapter 2 Subdivision E. All data which is gathered in order to comply with Attachament C of these protocols shall be maintained for three years and be made available to the Executive Officer upon request. Any such data which is invalidated shall be identified and reasons provided for any data invalidation. The nitrogen oxides and oxygen monitors shall also meet the specifications in Attachment B (BIAS TEST) of these protocols.

18. Quality Assurance for Fuel Flow Meters

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

If the flow device manufacturer has a method or device that permits the fuel flow measuring device to be tested as installed for relative accuracy, the Facility Permit holder shall request approval from the Executive Officer. Approval will be granted in cases where the Facility Permit holder can demonstrate to the satisfaction of the Executive Officer that no suitable testing location exists in the exhaust stacks or ducts and that it would be an inordinate cost burden to modify the exhaust stack configuration to provide a suitable testing location. The method or device used for relative accuracy testing shall be traceable to NIST standards. This method shall be used only if natural gas, fuel oil, or other fuels which the Facility Permit holder can show to the satisfaction of the Executive Officer have stable F-factors and gross heating values, or if the Facility Permit holder measures the F-factor and gross heating value of the fuel.

19. Calibration Gas Traceability

All calibration gases used during certification tests and quality assurance and quality control activities shall be certified according to 40 CFR, Part 75, Appendix H - Revised Traceability Protocol No. 1.

C. REPORTING PROCEDURES

1. Interim Reporting Procedures

a. From January 1, 1994 until December 31, 1994 (Cycle 1 facilities) and July 1, 1994 until June 30, 1995 (Cycle 2 facilities), the Facility Permit holder shall be allowed to use an interim procedure for data reporting and storage. The Facility Permit holder shall submit as part of the Facility Permit application, the methodology for interim data reporting and storage. The Facility Permit application shall be subject to the approval of the Executive Officer and shall, at a minimum, meet the requirements of Chapter 2, Subdivision C, Paragraph 1 Subparagraphs b, c, and d

b. All the data required in Chapter 2, Subdivision C, Paragraph 1, Subparagraphs c and d shall be made available to the Executive Officer.

c. For each piece of equipment the following information shall be stored on site and be made available to the Executive Officer upon request:

i. Calendar dates covered in the reporting period;

ii. Each monthly emissions (lb NOx/month) and each hourly emissions (lb NOx/hour);

iii. Identification of the operating hours for which a sufficient number of valid data points has not been taken, reasons for not taking sufficient data, and a description of corrective action taken;

iv. Identification of Fd factor for each type of fuel used for calculations and the type of fuel burned;

d. The following information for the entire facility shall be on a monthly basis in a format approved by the Executive Officer:

i. Calendar dates covered in the reporting period;

ii. The sum of the daily emissions (lb NOx/day) from all NOx RECLAIM sources.

e. All data required by Chapter 2, Subdivision C, Paragraph 1, Subparagraphs c and d shall be recorded and/or transmitted to the District in a format specified by the Executive Officer.

2. Final Reporting Procedures

a. On and after January 1, 1995 (Cycle 1 facilities) and July 1, 1995 (Cycle 2 facilities), the RTU installed at each location shall be used to electronically report total daily mass emissions of NOx and daily status codes to the District Central NOx Station.

b. On and after January 1, 1995 (Cycle 1 facilities) and July 1, 1995 (Cycle 2 facilities), the Facility Permit holder shall submit to the Executive Officer a Monthly Emissions Report in the manner and form specified by the Executive Officer within thirty calendar days of the close of each of the first eleven months of the compliance year.

c. On and after January 1, 1995 (Cycle 1 facilities) and July 1, 1995 (Cycle 2 facilities), all or part of the interim data storage systems shall remain as continuous backup systems.

d. An alternate backup data storage system may be implemented, upon request.

D. ALTERNATIVE PROCEDURES FOR EMISSION STACK FLOW RATE DETERMINATION

1. Multiple Sources Venting to a Common Stack

In the event that more than one source vents to a common stack, the alternative reference method for determining individual source flow rates shall use the F-factors in EPA Method 19 and the following equation:

r

ci = [20.9/(20.9 - bi)] x ð (Fdij x dij x Vij) (Eq. 10)

j=1

ci = The stack gas flow rate for the individual source

bi = The stack gas concentration of oxygen on a dry basis (%),

Fdij = The dry F factor 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/mm Btu)

dij = The fuel flow rate for each type of fuel for individual source measured every 15-minute period

Vij = The higher heating value of the fuel for each type of fuel

The product Dij x Vij shall have units of millions of Btu per hour (mmBtu/hr)

The measurement of wet concentration and wet F factor shall be allowed provided that wet concentration of NOx is measured


Example Calculation:

bi = 4.2% O2
Fdij = 8710 dscf/106 Btu
dij = 3000 dscfh
Vij = 1050 Btu/scf
ci = [20.9/(20.9 - 4.2)] x [(8710/106)(3000)(1050)
ci = 34,337 dscfh


This method may be used for applicable sources before and after the interim period mentioned in Chapter 2, Subdivision C, Paragraph 1. The orifice plates used in each affected piece of equipment vented to a common stack shall meet the requirements in Chapter 2, Subdivision D, Paragraph 2.

2. Quality Assurance for Orifice Plate Measurements

Each orifice plate used to measure the fuel gas flow rate shall be checked once every 12 months using Reference Methods. If the orifice plate cannot be checked using Reference Methods, it may be checked using other methods that can show traceability to NIST standards. If the orifice plate cannot be checked by Reference Methods or other methods that can show traceability to NIST standards, the orifice plate shall be removed from the gas supply line for an inspection once every 12 months, and the following inspection procedure shall be followed:

a. Each orifice plate shall be visually inspected for any nicks, dents, corrosion, erosion, or any other signs of damage according to the orifice plate manufacturer's specifications.

b. The diameter of each orifice shall be measured using the method recommended by the orifice plate manufacturer.

c. The flatness of the orifice plate shall be checked according to the orifice manufacturer's instructions. The departure from flatness of an orifice plate shall not exceed 0.010 inches per inch of dam height (D-d/2) along any diameter. Here, D is the inside pipe diameter, and d is the orifice diameter at its narrowest constriction.

d. The pressure gauge or other device measuring pressure drop across the orifice shall be calibrated against a manometer, and shall be replaced if it deviates by more than ±2 percent across the range.

e. The surface roughness shall be measured using the method recommended by the orifice plate manufacturer. The surface roughness of an orifice plate shall not exceed 50 microinches.

f. The upstream edge of the measuring orifice shall be square and sharp so that it shall not show a beam of light when checked with an orifice gauge.

g. In centering orifice plates, the orifice shall be concentric with the inside of the meter tube or fitting. The concentricity shall be maintained within 3 percent of the inside diameter of the tube or fitting along all diameters.

h. Any other calibration tests specified by the orifice manufacturer shall be conducted at this time.

If an orifice plate fails to meet any of the manufacturer's specifications, it shall be replaced within two weeks of the inspection.

E. MISSING DATA PROCEDURES

1. Procedures for Missing NOx Concentration Data

For each equipment, whenever a valid hour of NOx pollution concentration data has not been obtained or recorded, the Facility Permit holder shall provide substitute data using the procedure below. Alternatively, a facility may provide NOx pollution concentration missing data using the procedure in 40 CFR Part 75 Subpart D for SO2 emissions (in lb/hr) if the relative accuracy of the pollutant analyzer, flow measurement system, and emission rate measurement during the last CEMS certification test and/or RATA are all less than 10%.

a. The Facility Permit holder shall calculate on a daily basis the percent data availability from the NOx pollutant concentration monitoring analyzer according to the following procedures:

i. Calculate on a daily basis a rolling percentage of the operating hours of each equipment that each concentration monitoring system was available for the previous 365 days;

ii. Record, on a daily basis, the percent annual concentration monitor availability using the following equation:

W = Y/Z x 100 (Eq. 11)

where:

W = the percent annual monitor availability

Y = the total operating hours for which the monitor provided quality-assured data during the previous 365 days

Z = the total operating hours of the equipment during the previous 365 days.


Example Calculation:

Y = 1,680 hrs
Z = 2,160 hrs
W = Y/Z x 100
W = (1,680/2,160) x 100
W = 77.78%


b. Whenever data from the pollutant concentration monitor have been available and recorded for 95 percent or more of the total operating hours of the equipment during the previous 365 days, the Facility Permit holder shall calculate substitute data for each hour according to the following procedures.

i. For a missing data period less than or equal to 24 hours, substitute data shall be calculated using the 1N Procedure in Attachment A.

ii. For a missing data period greater than 24 hours, substitute data shall be calculated using the maximum hourly concentration recorded by the concentration monitor for the previous 30 days.

c. Whenever data from the concentration monitor have been available for 90 percent or more but less than 95 percent of the total operating hours of the equipment during the previous 365 days, the Facility Permit holder shall calculate substitute data for each hour according to the following procedures.

i. For a missing data period of less than or equal to 3 hours, substitute data shall be calculated using the average of the recorded concentration for the hour immediately before the missing data period and the hour immediately after the missing data period.

ii. For a missing data period of more than 3 hours but less than or equal to 24 hours, substitute data shall be calculated using the maximum hourly concentration recorded by the concentration monitor for the 30 days previous to the missing data period.

iii. For a missing data period of greater than 24 hours, substitute data shall be calculated using the maximum hourly concentration recorded by the concentration monitor for the 365 days previous to the missing data period.

iv. Whenever data from the concentration monitor have been available for less than 90 percent of the total operating hours of the equipment during the previous 365 days, substitute data shall be calculated using the highest hourly concentration recorded during the service of the monitoring system.

d. For missing data periods where there is no prior CEMS data available:

i. for less than or equal to 24 hours, the mass emissions
shall be calculated using totalized fuel usage and the
starting emission factor specified in Table 1 of Rule

2002 or any alternative emission factor used in the determination of intial allocations; or

ii. for less than or equal to 24 hours and where fuel usage is not available, the mass emissions shall be calculated using the equipment maximum rated capacity, 100 percent equipment uptime, and the starting emission factor specified in Table 1 of Rule 2002; or

iii. for greater than 24 hours, the mass emissions shall be calculated using the equipment maximum rated capacity, 100 percent equipment uptime, and the Emission Fee Billing Factor specified in Table 3-D.

iv. Retroactively from January 1, 1995 and ending June 30, 1995, for Cycle 1 Facility Permit holders with major NOx sources that do not have an approved RECLAIM certified CEMS, may calculate NOx daily mass emissions in lieu of the procedures specified in the above clauses E(1)(d)(i), E(1)(d)(ii), and E(1)(d)(iii), using (1) the emission factor specified in Table 2 of Rule 2002 or any alternative factor used in the determination of initial allocations or specified in the facility permit and (2) the totalized fuel usage or process throughput.

2. Procedures for Missing Stack Exhaust Gas Flow Rate Data

For each equipment, whenever a valid hour of stack exhaust gas flow rate data has not been obtained or recorded, the Facility Permit holder shall provide substitute data using the procedure below. Alternatively, a facility may provide stack exhaust gas flow rate data using the procedure in 40 CFR Part 75 Subpart D if the relative accuracy of the pollutant analyzer, flow measurement system, and emission rate measurement during the last CEMS certification test and/or RATA are all less than 10%.

a. For each affected piece of equipment, the Facility Permit holder shall provide substitute data as described below whenever a valid hour of flow data has not been obtained and recorded.

b. The Facility Permit holder shall calculate on a daily basis the percent data availability from the flow monitoring system according to the following procedures:

i. Calculate on a daily basis a rolling percentage of the operating hours of each equipment that each flow monitoring system was available for the previous 365 days;

ii. Record on a daily basis the percent annual flow monitor availability using the following equation:

W = Y/Z x 100 (Eq. 12)


Example Calculation:

Y = 1,680 hrs
Z = 2,160 hrs
W = Y/Z x 100
W = (1,680/2,160) x 100
W = 77.78%


where:

W = the percent annual flow monitor availability

Y = the total operating hours for which the monitor provided quality-assured data during the previous 365 days

Z = the total operating hours of the equipment during the previous 365 days.

c. Whenever data from the flow monitor have been available and recorded for 95 percent or more of the total operating hours of the equipment during the previous 365 days, the Facility Permit holder shall calculate substitute data for each hour according to the following procedures:

i. For a missing data period less than or equal to 24 hours, substitute data shall be calculated using the 1N Procedure in Attachment-A.

ii. For a missing data period greater than 24 hours, substitute data shall be calculated using the maximum hourly flow recorded by the flow monitor for the previous 30 days.

d. Whenever data from the flow monitor have been available for 90 percent or more but less than 95 percent of the total operating hours of the equipment during the previous 365 days, the Facility Permit holder shall calculate substitute data for each hour according to the following procedures:

i. For a missing data period of less than or equal to 3 hours, substitute data shall be calculated using the average of the recorded flow rate for the hour immediately before the missing data period and the hour immediately after the missing data period.

ii. For a missing data period of more than 3 hours but less than or equal to 24 hours, substitute data shall be calculated using the maximum hourly flow rate recorded by the flow monitor for the previous 30 days.

iii. For a missing data period of greater than 24 hours, substitute data shall be calculated using the maximum hourly flow rate recorded by the flow monitor for the previous 365 days.

iv. Whenever data from the flow monitor have been available for less than 90 percent of the total operating hours of the equipment during the previous 365 days, substitute data shall be calculated using the highest hourly flow rate recorded during the service of the monitoring system.

F. TIME-SHARING

1. Time-sharing is where an analyzer and possibly the associated sample conditioning system is used on more than one source. Time-sharing is allowed for NOx RECLAIM sources provided the CEMS can meet the following requirements in addition to the other requirements in this document for each source that is time-shared.

2. All sources shall have mutually compatible span range(s). The span range(s) shall be able to meet the criteria in Chapter 2, Subdivision B, Paragraph 8.

3. Each source shall have a data reading period greater than or equal to 3 times the longest response time of the system. For shared systems the response time is measured at the input or probe at each source. A demonstration of response time for each source shall be made during certification testing. Data is not to be collected following a switch of sampled sources until an amount of time equal to the response time has passed.

4. The CEMS shall be able to perform and record zero and span calibrations at each source.

G. EMISSIONS DURING STARTUP OR SHUTDOWN PERIODS

The Facility Permit holder of a major source with startup or shutdown periods at least 6 hours in duration during which the pollutant or diluent concentrations do not fall within 20-95% of the normal operation span range(s) shall apply the following methodology; otherwise, the Facility Permit holder shall comply with Chapter 2, Subdivision E, Paragraph 1 - Missing Data Procedures:

1. During equipment startup or shutdown the Facility Permit holder shall apply the unregulated emission factor specified in Table 3-D; or

2. If the emission factors in Table 3-D do not reflect the emission factors during startup and shutdown periods, the Facility Permit holder shall propose emission factors for the approval of the Executive Officer and shall submit source test data to substantiate the proposed emission factors. The hourly average emissions during startup and shutdown periods shall be calculated and reported according to:

Est = Dst x EFst (Eq.13)

where:

Est = The summation of hourly average mass emission of nitrogen oxides during startup period (lb/hr).

Dst = The summation of hourly average fuel flow rate for each type of fuel during startup period (mmscf/hr or mgal/hr).

EFst = The unregulated or Facility Permit holder-specified emission factor during startup period (lb/mmscf or lb/mgal).

Esh = Dsh x EFsh (Eq.14)

where:

Esh = The summation of hourly average mass emission of nitrogen oxides during shutdown period (lb/hr).

Dsh = The summation of hourly average fuel flow rate for each type of fuel during shutdown period (mmscf/hr or mgal/hr).

EFsh = The unregulated or Facility Permit holder-specified emission factor during shutdown period (lb/mmscf or lb/mgal).

TABLE 2-A

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : BOILERS


EQUIPMENT MEASURED VARIABLES



Boilers 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Steam production rate;


Boilers with low NOx burners All variables identified for boilers.

Boilers with staged combustion All variables identified for boilers.

Boilers with FGR All variables identified for boilers; AND
4. Flue gas recirculation rate.

Boilers with SCR All variables identified for boilers; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Boilers with SNCR All variables identified for boilers; AND
4. Ammonia (or urea) injection rate;
5. Temperature of the inlet gas stream to SNCR;

Boilers with NSCR All variables identified for boilers; AND
4. Natural gas (or other HC) injection rate.

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : FURNACES


EQUIPMENT MEASURED VARIABLES



Furnaces 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Production rate;


Furnaces with low NOx burners All variables identified for furnaces.

Furnaces All variables identified for furnaces.
with combustion modification

Furnaces with SCR All variables identified for furnaces; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Furnaces with SNCR All variables identified for furnaces; AND
4. Ammonia (or urea) injection rate;
5. Temperature of the inlet gas stream to SNCR;

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : OVENS


EQUIPMENT MEASURED VARIABLES



Ovens 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Production rate;


Ovens with low NOx burners All variables identified for ovens.

Ovens with combustion modification All variables identified for ovens.

Ovens with SCR All variables identified for ovens; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Ovens with SNCR All variables identified for ovens; AND
4. Ammonia (or urea) injection rate;
5. Temperature of the inlet gas stream to SNCR;

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : DRYERS


EQUIPMENT MEASURED VARIABLES



Dryers 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Production rate;


Dryers with low NOx burners All variables identified for dryers.

Dryers with combustion modification All variables identified for dryers.

Dryers with FGR All variables identified for dryers; AND
4. Flue gas recirculation rate.

Dryers with SCR All variables identified for dryers; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Dryers with SNCR All variables identified for dryers; AND
4. Ammonia (or urea) injection rate;
5. Temperature of the inlet gas stream to SNCR;

Dryers with NSCR All variables identified for dryers; AND
4. Natural gas (or other HC) injection rate.

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : PROCESS HEATERS


EQUIPMENT MEASURED VARIABLES



Process heaters 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Production rate;


Process heaters All variables identified for process heaters.
with low NOx burners

Process heaters with combustion All variables identified for process heaters.
modification

Process heaters with FGR All variables identified for process heaters; AND
4. Flue gas recirculation rate.

Process heaters with SCR All variables identified for process heaters; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Process heaters with SNCR All variables identified for process heaters; AND
4. Ammonia (or urea) injection rate;
5. Temperature of the inlet gas stream to SNCR;

Process heaters with NSCR All variables identified for process heaters; AND
4. Natural gas (or other HC) injection rate.

Process heaters with water All variables identified for process heaters; AND
(or steam) injection 4. Water (or steam) injection rate.

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : INCINERATORS


EQUIPMENT MEASURED VARIABLES



Incinerators 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Production rate;


Incinerators with SCR All variables identified for incinerators; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Incinerators with SNCR All variables identified for incinerators; AND
4. Ammonia (or urea) injection rate;
5. Temperature of the inlet gas stream to SNCR;

Table 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : REFINERY TAIL GAS UNITS


EQUIPMENT MEASURED VARIABLES



Refinery tail gas units 1. Stack NOx concentration and exhaust flow rate; OR;
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Production rate;


TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : TEST CELLS


EQUIPMENT MEASURED VARIABLES



Test cells 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Shaft horsepower output;


Test cells with SCR All variables identified for test cells; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Test cells with Packed Chemical All variables identified for test cells; AND
Scrubber 4. Chemical injection rate.

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : INTERNAL COMBUSTION ENGINES


EQUIPMENT MEASURED VARIABLES



Internal combustion engines 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Throttle setting shaft horsepower output;


Internal combustion engines with All variables identified for internal combustion engines.
combustion modification

Internal combustion engines with All variables identified for internal combustion engines.
Injection Timing Retard 4 degree

Internal combustion engines with All variables identified for internal combustion engines.
turbocharger, aftercooler,
intercooler.

Internal combustion engines All variables identified for internal combustion engines;
with SCR AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Internal combustion engines All variables identified for internal combustion engines; with NSCR AND
4. Natural gas (or other HC) injection rate.

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : GAS TURBINES


EQUIPMENT MEASURED VARIABLES



Gas turbines 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Shaft horsepower output;


Gas turbines with Water All variables identified for gas turbines; AND
or Steam Injection 4. Water or steam injection rate;

Gas turbines with SCR All variables identified for gas turbines; AND
and Steam Injection 4. Ammonia injection rate; or
5. Steam injection rate
6. Temperature of the inlet gas stream to SCR;

Gas turbines with SCR All variables identified for gas turbines; AND
and Water Injection 4. Ammonia injection rate; or
5. Water injection rate
6. Temperature of the inlet gas stream to SNCR;

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : KILNS AND CALCINERS


EQUIPMENT MEASURED VARIABLES



Kilns and calciners 1. Stack NOx concentration and exhaust flow rate; OR
Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Production rate;


Kilns and calciners All variables identified for kilns and calciners.
with low NOx burners

Kilns and calciners All variables identified for kilns and calciners.
with combustion modifications

Kilns and calciners with FGR All variables identified for kilns and calciners; AND
4. Flue gas recirculation rate.

Kilns and calciners with SCR All variables identified for kilns and calciners; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

Kilns and calciners with SNCR All variables identified for kilns and calciners; AND
4. Ammonia (or urea) injection rate;
5. Temperature of the inlet gas stream to SNCR;

Kilns and calciners with NSCR All variables identified for kilns and calciners; AND
4. Natural gas (or other HC) injection rate.

TABLE 2-A (CONTINUED)

MEASURED VARIABLES FOR MAJOR NOx SOURCES

EQUIPMENT TYPE : FLUID CATALYTIC CRACKING UNITS


EQUIPMENT MEASURED VARIABLES



FCCUs 1. Stack NOx concentration and exhaust flow rate; OR
(CO Boilers) Stack NOx, and O2 concentrations, and fuel flow rate;
2. Status codes;
3. Production rate;


FCCUs All variables identified for refinery tail gas units.
with combustion modifications

FCCUs with SCR All variables identified for refinery tail gas units; AND
4. Ammonia injection rate;
5. Temperature of the inlet gas stream to SCR;

FCCUs with SNCR All variables identified for refinery tail gas units; AND
4. Ammonia (or urea) injection rate;
5. Temperature of the inlet gas stream to SNCR;

FCCUs with NSCR All variables identified for refinery tail gas units; AND
4. Natural gas (or other HC) injection rate.

TABLE 2-B

REPORTED VARIABLES FOR ALL MAJOR NOx SOURCES


EQUIPMENT REPORTED VARIABLES



All Major 1. Total daily mass emissions from each source;
NOx sources 2. Daily Status codes.











SCAQMD RULE 2012-2 MJR. SOURCES-CONT. EMIS. MONITORING SYS
LAST REVISED 11/11/11







             C H A P T E R   2



             M A J O R    S O U R C E S    -    C O N T I N U O U S

             E M I S S I O N    M O N I T O R I N G    S Y S T E M

             ( C E M S )


                                  TABLE OF CONTENTS


             CHAPTER 2 - MAJOR SOURCES - CONTINUOUS EMISSION MONITORING
             SYSTEM (CEMS)

             A. Measurement Requirements................................8
             B. Monitoring Systems.....................................10
             C. Reporting Procedures...................................22
             D. Alternative Procedures for Emission Stack Flow Rate
                Determination..........................................24
             E. Missing Data Procedures................................26
             F. Time-Sharing...........................................29
             G. Emissions During Startup or Shutdown Periods...........30




             Rule 2012
             October 15, 1993

PROTOCOL FOR RULE 2012


             Between  January  1.  1994  and  December  31, 1994 (Cycle 1
             facilities)  and  between  July  1, 1994 and June  30,  1995
             (Cycle 2 facilities), major sources  shall be allowed to use
             an interim reporting procedure to  measure  and  record  NOx
             emissions  on  a monthly basis according to the requirements
             specified in Chapter  3  "Large Sources - Continuous Process
             Monitoring System (CPMS)" or by extracting NOx emission data
             from  existing  District  certified   continuous   emissions
             monitoring   system  (CEMS).    Chapter  2,  Subdivision  C,
             Paragraph 1 specifies  the  requirements  for  this  interim
             period.   On  and after January 1, 1995 (Cycle 1 facilities)
             and July 1,1995  (Cycle  2  facilities), the Facility Permit
             holder  of  each major source shall  report  the  daily  NOx
             emissions by  5:00 p.m. of the following day and comply with
             all  other  applicable   requirements   (except  Chapter  2,
             Subdivision C, Paragraph 1) specified in this chapter.


             The Facility Permit holder of a source that  is  required to
             install CEMS may request the Executive Officer to approve an
             alternative  monitoring  device  (or  system components)  to
             quantify   the  emissions  of  NOx.   The  applicant   shall
             demonstrate  to  the  Executive  Officer  that  the proposed
             alternative monitoring device is at a minimum equivalent  in
             relative accuracy, precision, reliability, and timeliness to
             a  CEMS for that source, according to the criteria specified
             in 40  CFR  Part  75  Subpart  E.   In  lieu of the criteria
             specified  in 40 CFR Part 75 Subpart E, substitute  criteria
             is acceptable if the applicant demonstrates to the Executive
             Officer that  the  proposed alternative monitoring device is
             at  minimum  equivalent   in  relative  accuracy  precision,
             reliability, and timeliness to a CEMS for that source.  Upon
             approval by the Executive Officer,  the  substitute criteria
             shall  be submitted to the federal Environmental  Protection
             Agency as  an  amendment  to  the  State Implementation Plan
             (SIP).

  A.   MEASUREMENT REQUIREMENTS
       1.   The Facility Permit holder of each major NOx equipment
             shall install, calibrate, maintain, and operate an approved
             CEMS to measure and record  the following:
             a.   Nitrogen oxide concentrations in the gases discharged
                  to the atmosphere from affected equipment;
             b.   Oxygen concentrations, at each location where nitrogen
                  oxide concentrations are monitored, if required for
                  calculation of the stack gas flow rate;
             c.   Stack gas volumetric flow rate.  An in-stack flow meter
                  may be used to determine mass emissions to the atmosphere
                  from affected equipment, except:
                  i.   when more than one affected piece of equipment ventsto
                       the atmosphere through a single stack; or
                  ii.  during periods of  low  flow  rates when
                       the  flow  rate is no longer within  the
                       applicable range  of  the  in-stack flow
                       meter.

             d.   In lieu of complying with Chapter 2, Subdivision A,
                  Paragraph 1, Subparagraph c, if heat input rate is needed to
                  determine the stack gas volumetric flow rate, the Facility
                  Permit holder shall include in the CEMS calculations the Fd
                  factors listed in 40 CFR Part 60, Appendix A, Method 19,
                  Table 19-1.  The Facility Permit holder shall submit data to
                  develop Fd factors when alternative fuels are fired and
                  obtain the approval of the Executive Officer for use of the
                  Fd factors before firing any alternative fuel.
             e.   All applicable variables listed in Table 2-A.
             f.   The Facility Permit holder shall also provide any other
                  data necessary for calculating air contaminant emission
                  rates as determined by the Executive Officer.
             g.   The data generated from a monitoring system for
                  parameters listed in subparagraphs a, b, c and d shall be
                  recorded both by strip chart recorders and computer
                  printout.  The strip chart shall have a minimum chart width
                  of 10 inches, a readability of 0.5% of the span, and a
                  minimum of 100 chart divisions.
        2.   The Facility Permit holder shall by March 31, 1994 for
             Cycle 1 facilties and September 30, 1994 for Cycle 2
             facilities, submit a CEMS plan to the Executive Officer for
             approval.  The plan shall contain at a minimum the following
             items:
                      a.   A list of all major sources which will have CEMS
                           installed.
                      b.   Details  of the proposed Continuous  Emission
                           Monitors  as   well   as  the  proposed  flow
                           monitors for each affected source.

                       c.   Details   of   the  Quality   Control/Quality
                            Assurance Plan for the CEMS.

                       d.   Proposed range of  each CEMS and the expected
                            concentrations of pollutants for each source.

                       e.   Date by which purchase order for each system will
                            be issued.
                       f.   Construction schedule  for  each  system, and
                            date of completion of installation.

                       g.   Date   by   which   CEMS  certification  test
                            protocol will be submitted  to  the  District
                            for approval for each system.

                       h.   Date  by  which  certification tests will  be
                            completed for each system.

                       i.   Date by which certification test results will
                            be submitted for review  by the District, for
                            each system.

                       j.   Any other pertinent information regarding the
                            installation  and  certification   for   each
                            system.

             If a CEMS plan is disapproved in whole or in part, the
             District staff will notify the Facility Permit holder in
             writing and the Facility Permit holder shall have 30 days
             from the date it receives the notice from the District to
             resubmit its plan.
        3.   The variables listed in Table 2-A shall be measured and
             recorded at the facility to determine mass emission and
             track the operation of basic and control equipment.  The
             variables listed in Table 2-B shall be reported to the
             District's NOx Central Station Computer.  Alternatives
             indicated  in Tables 2-A and 2-B indicate choices which
             shall be specified in the Facility Permit for that
             equipment.
        4.   As part of the Facility Permit Application review, the
             Executive Officer may modify the list of Facility Permit
             holder-selected tracking variables.
        5.   Data on Facility Permit holder selected variables shall
             be made available to the District staff upon request.
        6.   Source tests shall be performed by testing
             firms/laboratories who have received approval from the
             District by going through the District's laboratory approval
             program.
        7.   All Relative Accuracy Test Audits (RATA) shall be
             performed by testing firms/laboratories who have received
             approval from the District by going through the District's
             laboratory approval program.
        8.   Whenever EPA Protocol 1 gases are not available because
             National Institute for Standards and Testing (NIST) does not
             produce Standard Reference Materials (SRM's) for these gases
             at the appropriate concentration, EPA Protocol 2 (use of gas
             dilution systems) may be used to certify calibration gas
             standards.  In the case where no SRM's are available, the
             facility can submit a gas calibration protocol for approval,
             which specifies the steps to be taken for analyzing the
             concentration and stability of calibration gases.

   B.   MONITORING SYSTEMS

        1.   Information Required for Each 15-Minute Interval

                       All  CEMS  for  affected  equipment  shall,  at  a
                       minimum,  generate  and  record the following data
                       points once for each successive  15-minute  period
                       on  the  hour  and  at  equally  spaced  intervals
                       thereafter:

             a.   Nitrogen oxides concentration in the stack in units of
                  ppmv;
             b.   Oxygen concentration or carbon dioxide concentration in
                  the stack in units of percent;
             c.   Volumetric flow rate of stack gases in units of dry or
                  wet standard cubic feet per hour (dscfh or wscfh).  For
                  affected equipment standard gas conditions are defined as a
                  temperature at 68øF and one atmosphere of pressure;
             d.   Fuel flow rates in units of standard cubic feet per
                  hour (scfh) for gaseous fuels or pounds per hour (lb/hr) for
                  liquid fuels if EPA Method 19 is used to calculate the stack
                  gas volumetric flow rate;
             e.   Nitrogen  oxide  mass  emission  in units  of
                  lb/hour. The nitrogen oxide mass emissions is
                  calculated according to the following:

                            ei = ai x ci x 1.195 x 10-7           (Eq. 1)

                            where:

                            ei   =    The mass emissions of nitrogen
                                 oxides in pounds                   per
                                 hour.

                            ai   =    The stack gas concentration of
                                 nitrogen oxides                    on a
                                 dry basis (ppmv).

                            ci   =    The stack gas volumetric flow rate
                                 (dscfh).

                  Example Calculation:

                                 ai = 40 ppm
                                 ci = 150,000 dscfh
                                 ei = 40 x 150,000 x 1.195 x 10-7
                                 ei = 0.72 lb/hr

                       When the CEMS uses the heat input rate  and oxygen
                       concentration to determine the nitrogen oxide mass
                       emissions, the following equation shall be used to
                       calculate the emissions of nitrogen oxides:

                                                     r
                       ei = ai x [20.9/(20.9 - bi)] x 1.195 x 10-7 xä
             (Fdij x dij x Vij)    (Eq. 2)
                                                    j=1
                       where:

             ei        =    The  mass  emissions  of  nitrogen oxides  in
                                 pounds per hour

             ai        =    The  stack  gas  concentration   of  nitrogen
                                 oxides on a dry basis (ppmv)

             bi        =    The stack gas concentrations of oxygen  on  a
                                 dry basis (%)

                       r    =The number of different types of fuel

             Fdij      =    The  dry  F factor 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/106 Btu)

             dij       =    The fuel flow rate  for  each  type  of  fuel
                                 measured every 15-minute period

                                                                     Vij=
                                 The higher heating value of the fuel for
                                 each type of fuel

                  The product (dij x Vij) shall have units of millions of
             Btu per hour (106 Btu/hr).
                  Equation 2 may not be used in cases where enriched
             oxygen is used, non-fuel sources of carbon dioxide are
             present (e.g., lime kilns and calciners), and the oxygen
             content of the stack gas is 19 percent or greater.
             Example Calculation:

                  ai = 40 ppm
                  bi = 3.5%
                  Fdij = 8710 dscf/106 Btu
                  dij = 5,000 dscf
                  Vij = 1050 Btu/scf  or  1050 mmBtu/mmscf

                                                   r
             ei = ai x [20.9/(20.9-bi)]x1.195x10-7xä(Fdij x dij x Vij)
                                                  j=1

             ei = 40 x [20.9/(20.9-3.5)]x1.195x10-7x[8710/106x5000x1050]
             ei = 0.26 lb/hr

                       When  the CEMS uses the heat input rate and carbon
                       dioxide  concentration  to  determine the nitrogen
                       oxide mass emissions, the following equation shall
                       be  used  to calculate the emissions  of  nitrogen
                       oxides:

                                         r
             ei = (ai/ti)x100x1.195x10-7xä(FdijxdijxVij)    (Eq. 3)
                                        j=1
                       where:

             ei        =    The mass  emissions  of  nitrogen  oxides  in
                                 pounds per hour.

             ai        =    The   stack  gas  concentration  of  nitrogen
                                 oxides on a dry basis (ppmv).

             ti        =    The  stack   gas   concentrations  of  carbon
                                 dioxide on a dry basis (%).

                  r    =    The number of different types of fuel.

             Fcij      =    The carbon-based, dry  F factor for each type
                                 of fuel, the ratio of the dry gas volume
                                 of carbon dioxide to the heat content of
                                 the fuel (dscf/106 Btu).

             dij       =    The  fuel  flow rate for each  type  of  fuel
                                 measured every 15-minute period.

            Vij        =    The higher heating value of the fuel for
                                 each type of fuel.

                  The product (dij x Vij) shall have units of millions of
             Btu per hour (106 Btu/hr).
             Example Calculation:

                  ai = 40 ppm
                  ti = 11.0%
                  Fcij = 1040 scf/106 Btu
                  dij = 5,000 dscf
                  Vij = 1050 Btu/scf  or  1050 mmBtu/mmscf

                                               r
                  ei = ai/tix100x  x1.195x10-7xä(Fcijxdij x Vij)
                                              j=1

                  ei = 40/11.0x100x1.195x10-7x[1040x5000x1050x10-6]
                  ei = 0.24 lb/hr

                       f.   All measurements for concentrations and stack
                            gas flow rates,  and  selection  of  F factor
                            shall  be  made  on  a  consistent wet or dry
                            basis.

                       g.   CEMS status. The following status codes shall
                            be used to report the CEMS status:

                            1-1 VALID DATA

                            2-2 CALIBRATION

                            3-3 OFF LINE

                            4-4 ALTERNATE DATA ACQUISITION
                                 (e.g., manual sampling)

                            5-5 OUT OF CONTROL

                            6-6 FUEL SWITCH
                                 (e.g., gas to oil, coke to coal)

                  2.   Hourly Calculations

                       The  hourly  average  stack gas concentrations  of
                       nitrogen  oxides  and  oxygen,   the   stack   gas
                       volumetric  flow  rate, the fuel flow rate and the
                       emission  rate  of  nitrogen   oxides   shall   be
                       calculated for each equipment as follows:

                              n
                              ä ai
                             i=1
                        A =  -----    (for NOx concentration)     (Eq. 4)
                               n

                              n
                              ä bi
                             i=1
                        B =  -----    (for O2 concentration)      (Eq. 5)
                               n

                              n
                              ä ci
                             i=1
                        C =  -----   (for stack gas volumetric flow rate)(Eq. 6)
                               n

                              n
                              ä di
                              i=1
                        Di =  -----    (for fuel flow rates)      (Eq. 7)
                               n

                  Calculate D for each type of fuel firing separately.

                              n
                              ä ei
                              i=1
                        Ek = -----    (for NOx emissions)         (Eq. 8)
                               n

             All concentrations and stack gas flow rates shall be
             calculated on a consistent wet or dry basis.
                  where:

                  A =  The  hourly  average  stack  gas  concentration of
                            nitrogen oxides (ppmv)

                  ai = The measured stack gas concentrations  of nitrogen
                            oxides (ppmv)

                  B =  The hourly average oxygen stack concentration (%)

                  bi = The  measured  stack gas concentrations of  oxygen
                            (%)

                  C =  The hourly average stack gas flow rate (dscfh)

                  ci = The  measured  stack  gas  volumetric  flow  rates
                            (dscfh)

                  D =  The hourly average fuel flow rates, for each type
                       of fuel (appropriate units of volumetric flow rate
                       for each type of fuel, e.g., scfh, gal/hr, lb/hr,
                       bbl/hr, liters/hr, etc.)

                  di = The measured fuel flow rates for each type of fuel
                       (appropriate units of volumetric flow rate for
                       each type of fuel, e.g., scfh, gal/hr, lb/hr,
                       bbl/hr, etc.)

                  Ek = The hourly average  emissions  of  nitrogen oxides
                            (lb/hr)

                  ei = The measured mass emissions of nitrogen  oxides in
                            pounds per hour

                  n =  Number of valid data points during the hour

             The values of A through Ek shall be recorded for each
             affected piece of equipment.
                  3.   Daily Calculations

                       a.   Daily mass emissions calculation

                            The daily emissions of nitrogen oxides  shall
                            be  calculated and recorded for each affected
                            NOx source using the following procedure:


                              N   P   Q    S
                            G=äEk+äEm+äEst+äEsh                 (Eq.9)
                             k=1 m=1 o=1  r=1

                            where:

                            G    =    The  daily  emissions  of  nitrogen
                                     oxides (lb/day)

                            Em    =   The  hourly  average emissions  of
                                      nitrogen  oxides  using  substitute
                                      data (see Chapter 2, Subdivision B,
                                      Paragraph  5,  Subparagraph  b  and
                                      Chapter 2 Subdivision F)(lb/hr)

                             Ek     =  The hourly  average  emissions  of
                                        nitrogen oxides using data recorded
                                        by CEMS (lbs/hr)

                             Est    =  The  hourly  average  emissions of
                                        nitrogen   oxides   during  startup
                                        (lb/hr) (see Chapter 2 SubdivisionG)

                             Esh     =The  hourly  average emissions  of
                                      nitrogen  oxides   during  shutdown
                                      (lbs/hr) (see Chapter 2 Subdivision
                                      G)

                             N        =  Number of hours of valid data (see
                                         Chapter 2, Subdivision B, Paragraph
                                         5)  from  the CEMS coinciding  with
                                         the source operating hours

                              P        =  Number of  hours  using substitute
                                          data when the source is operating

                              Q         =  The number of hours during startup
                                           period

                              S        =  The   number   of   hours   during
                                          shutdown period

                                          and,

                               M        =   Number of operating hours of  the 
                                            source during the day.

                            Note that:M = N + P + Q + S

             Example Calculation:

                         Ek  =  0.5 lb/hr      Est = 0 lb/hr     Q = 0 hr
                         Em  =  0.7 lb/hr      Esd = 0 lb/hr     S = 0 hr
                         N   =  21 hr
                         P   =  3 hr
                         M   =  24 hr
                         G   =  (0.5 lb/hr)(21 hr/day)+(0.7 lb/hr)(3hr/day) +
                                (0 lb/hr)(0 hr/day)+ (0 lb/hr)(0 hr/day)
                         G   =  10.5  +  2.1  =  12.6 lb/day

                  4.   Operational Requirements

                       The  CEMS  shall  be  operated  and  data recorded
                       during  all  periods of operation of the  affected
                       NOx   source  including   periods   of   start-up,
                       shutdown,  malfunction  or  emergency  conditions,
                       except    for   CEMS   breakdowns   and   repairs.
                       Calibration data shall be recorded during zero and
                       span  calibration   checks,   and  zero  and  span
                       adjustments.   For  periods  of  hot  standby  the
                       Facility Permit holder may enter a  default  value
                       for  NOx  emissions.   Before  using  any  default
                       values the Facility Permit holder shall obtain the
                       approval of the Executive Officer and must include
                       in   the  CEMS  applications  or  CEMS  plans  the
                       estimates    of    NOx    emissions,    the    NOx
                       concentrations, the oxygen concentrations, and the
                       fuel  input rates or the stack gas volumetric flow
                       rates  during   hot   standby   conditions.    The
                       Executive  Officer  will disapprove those emission
                       values  which  do not correspond  to  hot  standby
                       conditions.

                  5.   Requirements for Valid Data Points

                        Valid data points are data points from the CEMS which
                  meet the requirements of Chapter 2, Subdivision B, Paragraph
                  16  or are obtained by the methods indicated in Chapter 2,
                  Subdivision B, Paragraph 6 and Chapter 2, Subdivision B,
                  Paragraph 7.
                  a.   Each CEMS and component thereof shall be capable of
                   completing a minimum of one cycle of operation (sampling,
                   analyzing and data recording) for each successive 15-minute
                   interval.  All NOx concentration, volumetric flow, and NOx
                   emission rate data shall be reduced to 1 hour averages.
                   These averages shall be equally computed from four or more
                   data points equally spaced over each 1 hour period, except
                   for periods of calibration, quality assurance activities,
                   CEMS maintenance, or CEMS repair.  During these periods a
                   valid hour shall consist of at least two data points with
                   each representing a 15-minute period and a cycle of
                   operation as described above, provided the number of these
                   periods does not exceed four per day.
                  b.   Failure of the CEMS to acquire the required number of
                   valid data points shall result in the loss of such data for
                   the entire hour and the Facility Permit holder shall record
                   and report data by means of the data acquisition and
                   handling system for the missing hour in accordance with the
                   applicable procedures for substituting missing data in the
                   Missing Data Procedures in Chapter 2 Subdivision E of this
                   document.
             6.   Alternative Data Acquisition Using Reference Methods
                       a.   When valid  nitrogen  oxides emission data is
                            not  collected  by the permanently  installed
                            CEMS,  emission rate  data  may  be  obtained
                            using District  Methods 7.1 or 100.1 (for NOx
                            concentration   in    the   stack   gas)   in
                            conjunction with District  Methods  1.1, 2.1,
                            3.1, and 4.1 or by using District Methods 7.1
                            or 100.1 in conjunction with District  Method
                            3.1  and  EPA Method 19.  For District Method
                            7.1 a minimum  of  12 samples, equally spaced
                            over a one-hour period, shall be taken.  Each
                            sample shall represent the five-minute period
                            in which it was taken.

                       b.   If the Facility Permit  holder chooses to use
                            a standby CEMS (such as in  a  mobile  van or
                            other  configuration),  to obtain alternative
                            monitoring  data  at  such  times   when  the
                            permanently  installed  CEMS for the affected
                            source(s) cannot produce valid data, then the
                            standby  CEMS  is  subject to  the  following
                            requirements:

                            i.   Standby  CEMS  shall  be  equivalent  in
                                 relative     accuracy,      reliability,
                                 reproducibility  and timeliness  to  the
                                 corresponding   permanently    installed
                                 CEMS.

                            ii.  The Facility Permit holder shall  submit
                                 a standby CEMS plan to the District  for
                                 review prior to using the standby CEMS.

                            iii. District acceptance of standby CEMS data
                                 shall be contingent on District approval
                                 of the plan.

                            iv.  The use of standby CEMS shall be limited
                                 to a total of 6 months for any source(s)
                                 within a calendar year.

                            v.   The  Facility Permit holder shall notify
                                 the District  within  24  hours  if  the
                                 standby  CEMS  is to be used in place of
                                 the permanently installed CEMS.

                            vi.  During the first 30 days of standby CEMS
                                 use, the Facility  Permit  holder  shall
                                 conduct  a Certified Gas Audit (CGA)  of
                                 the standby CEMS.

                            vii. The Facility  Permit holder shall notify
                                 the District within the 30-day period if
                                 the standby CEMS  shall  be  used longer
                                 than 30 days.

                            viii.After  the  first  30 days of using  the
                                 standby  CEMS  ,  the  Facility   Permit
                                 holder  shall  conduct at least one RATA
                                 of the standby CEMS  and  the RATA shall
                                 be  conducted  within  90  days  of  the
                                 initial use of the standby CEMS.

                            ix.  All  RATA and certification tests  shall
                                 be      performed       by       testing
                                 firms/laboratories   who  have  received
                                 approval  from  the  District  by  going
                                 through   the   District's    laboratory
                                 approval program.

                            x.   Immediately prior to obtaining data from
                                 the  source(s)  to  be  monitored,   the
                                 standby CEMS shall be quality assured in
                                 accordance with District Method 100.1


             7.   Alternative Data Acquisition Using Process Curves or
                  Other Means
                  Process curves of NOx emission rates or other
                  alternative means of NOx emission rate data generation may
                  be used to obtain nitrogen oxides emission data, provided
                  the Facility Permit holder has obtained the approval of the
                  Executive Officer prior to using alternate means of NOx
                  emission rate data generation.  The process curves and the
                  alternate means of NOx emission data generation mentioned in
                  this paragraph shall not be used more than 72 hours per
                  calendar month and may only be used if no CEMS data or
                  reference method data gathered under Chapter 2, Subdivision
                  B, Paragraph 6 is available.  Process curves may be used on
                  units which have air pollution control devices for the
                  control of nitrogen oxides emissions provided the Facility
                  Permit holder submits a complete list of operating
                  conditions that characterize the permitted operation.  The
                  conditions will be specified in the Facility Permit for that
                   equipment.  The process variables specified in the Facility
                   Permit conditions shall be monitored by the source.
            8.   Span Range Requirements for NOx Analyzers

                       Full  scale  span  ranges for the NOx analyzers at
                       each source shall be  set  on an individual basis.
                       The  full scale span range of  the  NOx  analyzers
                       shall  be set so that all the data points gathered
                       by the CEMS  lie within 20-95 percent of the full-
                       scale span range.
            9.   Calibration Drift Requirements

                 The CEMS design shall allow determination of
                 calibration drift (both negative and positive) at zero-level
                 (0 to 20 percent of full scale) and high-level (80 to 100
                 percent of full scale) values.  Alternative low-level and
                 high-level span values may be allowed with the prior written
                 approval of the Executive Officer.
             10. Relative Accuracy Requirements for Stack Gas Volumetric
                 Flow Measurement Systems
                 The stack gas volumetric flow measurement system shall
                 meet a relative accuracy requirement of being less than or
                 equal to 10 percent of the mean value of the reference
                 method test data in units of dscfh.  Relative accuracy is
                 calculated  by the equations in Section 8 of 40 CFR Part 60,
                 Appendix B, Performance Specification 2.  The volumetric
                 flow measurement system shall also meet the specifications
                 in Appendix B of these protocols.  The District recommends
                 (but does not require) performing a flow profile study
                 following the procedures in 40 CFR, Part 60, Appendix A,
                 Test Method 1.1, Section 2.5 to determine the acceptability
                 of the potential flow monitor location and to determine the
                 number and location of flow sampling points required to
                 obtain a representative flow value.
             11.  Relative Accuracy Requirements for Emission Measurement
                  The emission measurement shall meet a relative accuracy
                 requirement of being less than or equal to 20 percent of the
                 mean value of the reference method test data in units of
                 lb/hr.  Relative accuracy is calculated  by the equations in
                 Section 8 of 40 CFR, Part 60, Appendix B, Performance
                 Specification 2.  The emission rate measurement shall also
                 meet the specifications in Attachment-B of this document.
             12.  Certification Requirements for Analyzers
                 The portion of the CEMS which samples, conditions,
                 analyzes, and  records  the  nitrogen  oxides  and
                 oxygen  concentrations  in  the stack gas shall be
                 certified  according to the specifications  in  40
                 CFR,   Part   60,    Appendix    B,    Performance
                 Specifications 2 and 3.  Units using monitors with
                 more   than   one  span  range  must  perform  the
                 calibration error  test  on all span ranges.  This
                 portion   of  the  CEMS  shall   also   meet   the
                 specifications  in  Attachment  B  (BIAS  TEST) of
                 these protocols.

            13.  Provisional Approval

                 The Facility Permit holder of a major source shall
                 submit, certification test results and supporting documents
                 to the District for each CEMS by December 31, 1994 for Cycle
                 1 facilities and June 30, 1995 for Cycle 2 facilities.  The
                 Facility Permit holder shall certify that the results show
                 that the CEMS has met all the requirements of the protocol
                 if its submission is after August 31, 1994.  Upon receipt of
                 the test results and the certification that the CEMS is in
                 compliance, the District will issue a Provisional Approval.
                 After the Provisional Approval, all the data measured
                 and recorded by the CEMS will be considered valid quality
                 assured data, (retroactive to January 1, 1995) provided that
                 the Executive Officer does not issue a notice of disapproval
                 of final certification.  Final certification of the CEMS
                 will be granted if the certification test results show that
                 the CEMS has met all the requirements of the protocol.
                 In the case where the test results show that the CEMS
                 does not meet all the requirements of the rule, the
                 Executive Officer will disapprove the final certification.
                 If this occurs, the previously considered valid data from
                 January 1, 1995 will be replaced by data as specified in the
                 "Missing Data" section of the protocol.  This procedure
                 shall be used until the time that new certification test
                 results are submitted, and the CEMS has received final
                 approval by the District.
            14.  Sampling Location Requirements

                 Each affected piece of equipment shall have sampling
                 locations which meet the "Guidelines for Construction of
                 Sampling and Testing Facilities" in the District Source Test
                 Manual.  If an alternate location (not conforming to the
                 criteria of eight duct diameters downstream and two
                 diameters upstream from a flow disturbance) is used, the
                 absence of flow disturbance shall be demonstrated by using
                 the District method in the Source Test Manual, Chapter X,
                 Section 1.4, or 40 CFR, Part 60, Appendix A, Method 1.
                 Section 2.5 and the absence of stratification shall be
                 demonstrated using District method in the Source Test
                 Manual, Chapter X, Section 13.


            15.  Sampling Line Requirement
                 The  CEMS  sample line from the CEMS probe to  the
                 sample conditioning  system  shall  be  heated  to
                 maintain  the  sample  temperature  above  the dew
                 point  of  the sample.  This requirement does  not
                 apply to dilution  probe  systems  where no sample
                 condensation occurs.

            16.  Recertification Requirements

                 The District will reevaluate the monitoring systems at
                 any affected piece of equipment where changes to the basic
                 process equipment or air pollution control equipment occur,
                 to determine the proper full span range of the monitors.
                 Any monitor system requiring change to its full span range
                 in order to meet the criteria in Chapter 2, Subdivision B,
                 Paragraph 8 shall be recertified according to all the
                 specifications in  Chapter 2, Subdivision B, Paragraphs 10,
                 11, and 12 , as applicable, including the relative accuracy
                 tests, the calibration drift tests, and the calibration
                 error tests.  A new CEMS application shall be submitted for
                 each CEMS which is reevaluated.
                 The recertification for any existing CEMS shall be
                 completed within 90 days of the start-up of newly changed or
                 modified equipment monitored by such CEMS.  The Facility
                 Permit holder shall calculate and report NOx emission data
                 for the period prior to the CEMS recertification by means of
                 the automated data acquisition and handling system according
                 to the following procedures:
                       a.   For any CEMS which is recertified  within  90
                            days   of  start-up  of  the  newly  modified
                            equipment,  the emission data recorded by the
                            CEMS prior to  the  recertification  would be
                            considered   valid  and  shall  be  used  for
                            calculating and  reporting  NOx emissions for
                            the equipment it serves.

                       b.   For any CEMS which is not recertified  within
                            90  days  of  start-up  of the newly modified
                            equipment, the 90th percentile  emission data
                            (lbs  per  day)  for  the  previous  90  unit
                            operating days recorded by the CEMS prior  to
                            the   recertification   shall   be  used  for
                            calculating  and reporting NOx emissions  for
                            the equipment it serves.

                  17.  Quality Assurance Procedures for Analyzers
                       The   quality  assurance   and   quality   control
                       requirements for analyzers, flow monitors, and NOx
                       emission  rate  systems are given in  Attachment C
                       (QUALITY ASSURANCE AND QUALITY CONTROL PROCEDURES)
                       of these protocols.   The  quality assurance plans
                       required by Attachment C of these protocols  shall
                       be  submitted  along with the  CEMS  certification
                       application to the  District  for  the approval of
                       the   Executive   Officer   .   Source  test   and
                       monitoring equipment inspection  reports  required
                       by  the  Protocols  shall  be kept on-site for  at
                       least three years.  The reference method tests are
                       those methods in Chapter 8 -  Reference Methods of
                       these protocols.  Any CEMS which is deemed out-of-
                       control by Attachment C of these  protocols  shall
                       be  corrected,  retested  by the appropriate audit
                       procedure,  and restored to  in-control  condition
                       within 24 hours after being deemed out-of-control.
                       If the CEMS is  not  in-control  at the end of the
                       24-hour  period, the CEMS data shall  be  gathered
                       using the  methods  in  Chapter  2, Subdivision B,
                       Paragraph   6   and  Chapter  2,  Subdivision   B,
                       Paragraph 7 of these  requirements  or  using  the
                       Missing  Data  Procedures in Chapter 2 Subdivision
                       E.  All data which  is gathered in order to comply
                       with  Attachament C of  these  protocols  shall be
                       maintained  for  three years and be made available
                       to the Executive Officer  upon  request.  Any such
                       data which is invalidated shall be  identified and
                       reasons  provided for any data invalidation.   The
                       nitrogen oxides  and  oxygen  monitors  shall also
                       meet  the  specifications  in  Attachment B  (BIAS
                       TEST) of these  protocols.

                  18.  Quality Assurance for Fuel Flow Meters

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

                       If  the flow device manufacturer has a  method  or
                       device that permits the fuel flow measuring device
                       to be  tested  as installed for relative accuracy,
                       the Facility Permit  holder shall request approval
                       from  the  Executive Officer.   Approval  will  be
                       granted in cases  where the Facility Permit holder
                       can  demonstrate  to   the   satisfaction  of  the
                       Executive   Officer   that  no  suitable   testing
                       location exists in the exhaust stacks or ducts and
                       that  it  would be an inordinate  cost  burden  to
                       modify the  exhaust stack configuration to provide
                       a suitable testing location.  The method or device
                       used  for  relative   accuracy  testing  shall  be
                       traceable to NIST standards.  This method shall be
                       used only if natural gas, fuel oil, or other fuels
                       which the Facility Permit  holder  can show to the
                       satisfaction of the Executive Officer  have stable
                       F-factors  and  gross  heating  values, or if  the
                       Facility Permit holder measures the  F-factor  and
                       gross heating value of the fuel.

                  19.  Calibration Gas Traceability

                       All  calibration  gases  used during certification
                       tests and quality assurance  and  quality  control
                       activities shall be certified according to 40 CFR,
                       Part   75,   Appendix  H  -  Revised  Traceability
                       Protocol No. 1.

   C.   REPORTING PROCEDURES
        1.   Interim Reporting Procedures
         a. From January 1, 1994 until December 31, 1994 (Cycle 1
            facilities) and July 1, 1994 until June 30, 1995 (Cycle 2
            facilities), the Facility Permit holder shall be allowed to
            use an interim procedure for data reporting and storage.
            The Facility Permit holder shall submit as part of the
            Facility Permit application, the methodology for interim
            data reporting and storage.  The Facility Permit application
            shall be subject to the approval of the Executive Officer
            and shall, at a minimum, meet the requirements of  Chapter
            2, Subdivision C, Paragraph 1 Subparagraphs b, c, and d
         b. All the data required in Chapter 2, Subdivision C,
            Paragraph 1, Subparagraphs c and d  shall be made available
            to the Executive Officer.
         c. For each piece of equipment the following information
            shall be stored on site and be made available to the
            Executive Officer upon request:
            i.   Calendar dates covered in the reporting period;
            ii.  Each monthly emissions (lb NOx/month) and each hourly
                 emissions (lb NOx/hour);
            iii. Identification of the operating hours for which a
                 sufficient number of valid data points has not been
                 taken, reasons for not taking sufficient data, and
                 a description of corrective action taken;
            iv.  Identification of Fd factor for each type of fuel
                 used for calculations and the type of fuel burned;
         d. The following information for the entire facility shall
            be on a monthly basis in a format approved by the Executive
            Officer:
            i.   Calendar dates covered in the reporting period;
            ii.  The  sum  of  the  daily  emissions  (lb
                 NOx/day) from all NOx RECLAIM sources.

        e.   All data required by Chapter 2, Subdivision C,
             Paragraph 1, Subparagraphs c and d shall be recorded and/or
             transmitted to the District in a format specified by the
             Executive Officer.
        2.   Final Reporting Procedures
        a.   On and after January 1, 1995 (Cycle 1 facilities) and
             July 1, 1995 (Cycle 2 facilities), the RTU installed at each
             location shall be used to electronically report total daily
             mass emissions of NOx and daily status codes to the District
             Central NOx Station.
        b.   On and after January 1, 1995 (Cycle 1 facilities) and
             July 1, 1995 (Cycle 2 facilities), the Facility Permit
             holder shall submit to the Executive Officer a Monthly
             Emissions Report in the manner and form specified by the
             Executive Officer within thirty calendar days of the close
             of each of the first eleven months of the compliance year.
        c.   On and after January 1, 1995 (Cycle 1 facilities) and
             July 1, 1995 (Cycle 2 facilities), all or part of the
             interim data storage systems shall remain as continuous
             backup systems.
        d.   An alternate backup data storage system may be
             implemented, upon request.
  
  D.   ALTERNATIVE PROCEDURES FOR EMISSION STACK FLOW RATE
       DETERMINATION
        1.   Multiple Sources Venting to a Common Stack
             In the event that more than one source vents to a
             common stack, the alternative reference method for
             determining individual source flow rates shall use the F-
             factors in EPA Method 19 and the following equation:
                                      r
            ci = [20.9/(20.9 - bi)] x ä  (Fdij x dij x Vij)       (Eq. 10)
                                     j=1

                       ci  =  The stack gas flow rate for the individual
                       source

                       bi  =  The stack gas concentration of oxygen on a
                       dry basis (%),

                       Fdij=  The dry F factor for each type of fuel, the
                       ratio of the drygas volume of the products of
                       combustion to the heatcontent of the fuel (dscf/mm
                       Btu)

                       dij =  The fuel flow rate for each type of fuel
                       for individual sourcemeasured every 15-minute
                       period

                       Vij =  The higher heating value of the fuel for
                       each type of fuel

                       The product Dij x Vij shall have units of millions
                       of Btu per hour (mmBtu/hr)

                       The measurement of wet concentration and wet F
                       factor shall be allowed provided that wet
                       concentration of NOx is measured

             Example Calculation:

                       bi   =  4.2% O2
                       Fdij =  8710 dscf/106 Btu
                       dij  =  3000 dscfh
                       Vij  =  1050 Btu/scf
                       ci   =  [20.9/(20.9-4.2)]x[(8710/106)(3000)(1050)
                       ci   =  34,337 dscfh

                  This method may be used for applicable sources before
             and after the interim period mentioned in Chapter 2,
             Subdivision C, Paragraph 1.  The orifice plates used in each
             affected piece of equipment vented to a common stack shall
             meet the requirements in Chapter 2, Subdivision D, Paragraph 2.

        2.   Quality Assurance for Orifice Plate Measurements
             Each orifice plate used to measure the fuel gas flow
             rate shall be checked once every 12 months using Reference
             Methods.  If the orifice plate cannot be checked using
             Reference Methods, it may be checked using other methods
             that can show traceability to NIST standards.  If the
             orifice plate cannot be checked by Reference Methods or
             other methods that can show traceability to NIST standards,
             the orifice plate shall be removed from the gas supply line
             for an inspection once every 12 months, and the following
             inspection procedure shall be followed:
             a.   Each orifice plate shall be visually inspected for any
                  nicks, dents, corrosion, erosion, or any other signs of
                  damage according to the orifice plate manufacturer's
                  specifications.
             b.   The diameter of each orifice shall be measured using
                  the method recommended by the orifice plate manufacturer.
             c.   The flatness of the orifice plate shall be checked
                  according to the orifice manufacturer's instructions. The
                  departure from flatness of an orifice plate shall not exceed
                  0.010 inches per inch of dam height (D-d/2) along any
                  diameter. Here, D is the inside pipe diameter, and d is the
                  orifice diameter at its narrowest constriction.
             d.   The pressure gauge or other device measuring pressure
                  drop across the orifice shall be calibrated against a
                  manometer, and shall be replaced if it deviates by more than
                  ñ2 percent across the range.
             e.   The surface roughness shall be measured using the
                  method recommended by the orifice plate manufacturer. The
                  surface roughness of an orifice plate shall not exceed 50
                  microinches.
             f.   The upstream edge of the measuring orifice shall be
                  square and sharp so that it shall not show a beam of light
                  when checked with an orifice gauge.
             g.   In  centering  orifice  plates,  the  orifice
                  shall  be  concentric with the inside of  the
                  meter  tube  or  fitting.  The  concentricity
                  shall be maintained  within  3 percent of the
                  inside diameter of the tube or  fitting along
                  all diameters.

             h.   Any other calibration tests specified by the orifice
                  manufacturer shall be conducted at this time.
                  If an orifice plate fails to meet any of the
                  manufacturer's specifications, it shall be replaced within
                  two weeks of the inspection.

  E.   MISSING DATA PROCEDURES

        1.   Procedures for Missing NOx Concentration Data

             For each equipment, whenever a valid hour  of  NOx
             pollution concentration data has not been obtained
             or  recorded,  the  Facility  Permit  holder shall
             provide substitute data using the procedures in 40
             CFR part 75 subpart D if the relative accuracy  of
             the  pollutant  analyzer, flow measurement system,
             and emission measurement  is less than 10%, or use
             the procedures below.

             a.   The Facility Permit holder shall calculate on a daily
                  basis the percent data availability from the NOx pollutant
                  concentration monitoring analyzer according to the following
                  procedures:
                  i.   Calculate on a daily basis a rolling percentage of the
                       operating hours of each equipment that each 
                       concentration monitoring system was available for the 
                       previous 365 days;
                  ii.  Record, on a daily  basis,  the  percent
                       annual       concentration       monitor
                       availability    using    the   following
                       equation:

                          W  =  Y/Z x 100                 (Eq. 11)

                       where:
                        W   =  the   percent   annual    monitor
                                availability

                        Y   =  the  total  operating  hours  for
                               which    the   monitor   provided
                               quality-assured  data  during the
                               previous 365 days

                        Z   =  the total operating hours  of the
                               equipment during the previous 365
                               days.

             Example Calculation:

                             Y   =   1,680 hrs
                             Z   =   2,160 hrs
                             W   =   Y/Z x 100
                             W   =   (1,680/2,160) x 100
                             W   =   77.78%

                       b.   Whenever     data    from    the    pollutant
                            concentration monitor have been available and
                            recorded for 95  percent or more of the total
                            operating hours of  the  equipment during the
                            previous 365 days, the Facility Permit holder
                            shall calculate substitute data for each hour
                            according to the following procedures.

                            i.   For a missing data period less than or
                                 equal to 24 hours, substitute data shall
                                 be calculated using the 1N Procedure in
                                 Attachment A.
                            ii.  For a missing data period  greater  than
                                 24   hours,  substitute  data  shall  be
                                 calculated   using  the  maximum  hourly
                                 concentration     recorded     by    the
                                 concentration  monitor  for the previous
                                 30 days.

                      c.   Whenever data from the concentration monitor have 
                           been available for 90 percent or more but less 
                           than 95 percent of the total operating hours of 
                           the equipment during the previous 365 days, the 
                           Facility Permit holder shall calculate substitute 
                           data for each hour according to the following 
                           procedures.
                           i.   For a missing data period of less than or
                                equal to 3 hours, substitute data shall be
                                calculated using the average of the recorded
                                concentration for the hour immediately
                                before the missing data period and the hour
                                immediately after the missing data period.
                          ii.  For a missing data period of more than 3 hours
                               but less than or equal to 24 hours, substitute
                               data shall be calculated using the maximum
                               hourly concentration recorded by the
                               concentration monitor for the 30 days previous
                               to the missing data period.
                          iii. For a missing data period of greater than
                               24 hours, substitute data shall be calculated
                               using the maximum hourly concentration
                               recorded by the concentration monitor for the
                               365 days previous to the missing data period.
                          iv.  Whenever  data  from  the  concentration
                               monitor  have  been available  for  less
                               than 90 percent  of  the total operating
                               hours  of  the  equipment   during   the
                               previous 365 days, substitute data shall
                               be  calculated  using the highest hourly
                               concentration   recorded    during   the
                               service of the monitoring system.


                       d.   For missing data periods where there is no prior 
                            CEMS data available:
                            1.   for less than or equal to 24  hours, the
                                 mass emissions shall be calculated using
                                 totalized  fuel  usage  and the starting
                                 emission factor specified  in Table 1 of
                                 Rule  2002  or any alternative  emission
                                 factor  used  in  the  determination  of
                                 intial allocations; or

                            2.   for less than or  equal  to 24 hours and
                                 where  fuel usage is not available,  the
                                 mass emissions shall be calculated using
                                 the equipment  maximum  rated  capacity,
                                 100  percent  equipment uptime, and  the
                                 starting emission  factor  specified  in
                                 Table 1 of Rule 2002; or

                            3.   for  greater  than  24  hours,  the mass
                                 emissions shall be calculated using  the
                                 equipment  maximum  rated  capacity, 100
                                 percent   equipment   uptime,  and   the
                                 Emission Fee Billing Factor specified in
                                 Table 3-D.

                  2.   Procedures for Missing Stack Flow Data

                       For each piece of equipment, the  Facility  Permit
                       holder  shall provide substitute data as described
                       below whenever  a  valid hour of flow data has not
                       been obtained and recorded.

                       a.   The Facility Permit holder shall calculate on
                            a daily basis the  percent  data availability
                            from the flow monitoring system  according to
                            the following procedures:

                            i.   Calculate  on  a  daily basis a  rolling
                                 percentage  of  the operating  hours  of
                                 each equipment that each flow monitoring
                                 system was available  for  the  previous
                                 365 days;
                            ii.  Record  on  a  daily  basis  the percent
                                 annual  flow monitor availability  using
                                 the following equation:

                                 W  =  Y/Z x 100                 (Eq. 12)

             Example Calculation:

                              Y    =   1,680 hrs
                              Z    =   2,160 hrs
                              W    =   Y/Z x 100
                              W    =   (1,680/2,160) x 100
                              W    =   77.78%

                  where:
                            W   =   the  percent   annual   flow  monitor
                            availability

                            Y   =   the total operating hours  for  which
                                    the  monitor provided quality-assured
                                    data during the previous 365 days

                            Z   =   the  total  operating  hours  of  the
                                    equipment  during  the  previous  365
                                    days.

        b.   Whenever data from the flow monitor have been available
             and recorded for 95 percent or more of the total operating
             hours of the equipment during the previous 365 days, the
             Facility Permit holder shall calculate substitute data for
             each hour according to the following procedures:
             i.   For a missing data period less than or equal to 24
                  hours, substitute data shall be calculated using the 1N
                  Procedure in Attachment-A.
             ii.  For a missing data period greater than 24 hours,
                  substitute data shall be calculated using the maximum hourly
                  flow recorded by the flow monitor for the previous 30 days.
        c.   Whenever data from the flow monitor have been available
             for 90 percent or more but less than 95 percent of the total
             operating hours of the equipment during the previous 365
             days, the Facility Permit holder shall calculate substitute
             data for each hour according to the following procedures:
                            i.   For  a  missing data period of less than
                                 or equal  to  3  hours,  substitute data
                                 shall be calculated using the average of
                                 the  recorded  flow  rate for  the  hour
                                 immediately  before  the   missing  data
                                 period  and  the hour immediately  after
                                 the missing data period.
             ii.  For a missing data period of more than 3 hours but less
                  than or equal to 24 hours, substitute data shall be
                  calculated using the maximum hourly flow rate recorded by
                  the flow monitor for the previous 30 days.
             iii. For a missing data period of greater than 24 hours,
                  substitute data shall be calculated using the maximum hourly
                  flow rate recorded by the flow monitor for the previous 365
                  days.
             iv.  Whenever data from the flow monitor have been available
                  for less than 90 percent of the total operating hours of the
                  equipment during the previous 365 days, substitute data
                  shall be calculated using the highest hourly flow rate
                  recorded during the service of the monitoring system.


   F.   TIME-SHARING

        1.   Time-sharing is where an analyzer and possibly the
             associated sample conditioning system is used on more than
             one source.  Time-sharing is allowed for NOx RECLAIM sources
             provided the CEMS can meet the following requirements in
             addition to the other requirements in this document for each
             source that is time-shared.
        2.   All sources shall have mutually compatible span
             range(s).  The span range(s) shall be able to meet the
             criteria in Chapter 2, Subdivision B, Paragraph 8.
        3.   Each source shall have a data reading period greater
             than or equal to 3 times the longest response time of the
             system.  For shared systems the response time is measured at
             the input or probe at each source.  A demonstration of
             response time for each source shall be made during
             certification testing.  Data is not to be collected
             following a switch of sampled sources until an amount of
             time equal to the response time has passed.
        4.   The CEMS shall be able to perform and record zero and
             span calibrations at each source.
   G.   EMISSIONS DURING STARTUP OR SHUTDOWN PERIODS
             The Facility Permit holder of a major source with startup or
                  shutdown periods at least 6 hours  in  duration  during
                  which  the  pollutant  or diluent concentrations do not
                  fall  within  20-95%  of  the   normal  operation  span
                  range(s)   shall   apply  the  following   methodology;
                  otherwise, the Facility Permit holder shall comply with
                  Chapter 2, Subdivision  E,  Paragraph  1 - Missing Data
                  Procedures:

                  1.   During equipment startup or shutdown  the Facility
                       Permit holder shall apply the unregulated emission
                       factor specified in Table 3-D; or

                  2.   If  the  emission  factors  in  Table  3-D do  not
                       reflect  the  emission factors during startup  and
                       shutdown periods, the Facility Permit holder shall
                       propose emission   factors for the approval of the
                       Executive Officer and  shall  submit  source  test
                       data   to   substantiate   the  proposed  emission
                       factors.   The  hourly  average  emissions  during
                       startup and shutdown periods  shall  be calculated
                       and reported according to:

                       Est  =  Dst   x   EFst                     (Eq.13)

                       where:

                       Est  =  The  summation  of  hourly  average   mass
                               emission of nitrogen oxides during startup
                               period (lb/hr).

                       Dst  =  The  summation of hourly average fuel flow
                               rate for  each type of fuel during startup
                               period (mmscf/hr or mgal/hr).

                       EFst =  The unregulated or Facility Permit holder-
                               specified emission  factor  during startup
                               period (lb/mmscf or lb/mgal).

                       Esh  =  Dsh   x   EFsh                     (Eq.14)

                       where:

                       Esh  =  The  summation  of  hourly  average   mass
                               emission   of   nitrogen   oxides   during
                               shutdown period (lb/hr).

                       Dsh  =  The summation of hourly average fuel  flow
                               rate for each type of fuel during shutdown
                               period (mmscf/hr or mgal/hr).

                       EFsh =  The unregulated or Facility Permit holder-
                               specified emission factor  during shutdown
                               period (lb/mmscf or lb/mgal).





                                      TABLE 2-A

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                               EQUIPMENT TYPE : BOILERS

                  EQUIPMENT             |        MEASURED VARIABLES
             Boilers                    | 1.Stack NOx concentration and
                                            exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Steam production rate;
                                        |
        Boilers with low NOx burners    | All variables identified for
                                          boilers.
       Boilers with staged combustion   | All variables identified for
                                          boilers.
             Boilers with FGR           | All variables identified for
                                           boilers; AND
                                        | 4.Flue gas recirculation rate.
             Boilers with SCR           | All variables identified for
                                           boilers; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SCR;
                                        |
             Boilers with SNCR          | All variables identified for
                                           boilers; AND
                                        | 4.Ammonia (or urea) injection
                                            rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SNCR;
                                        |
             Boilers with NSCR          | All variables identified for
                                           boilers; AND
                                        | 4.Natural gas (or other HC)
                                            injection rate.





                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                              EQUIPMENT TYPE : FURNACES

                  EQUIPMENT             |         MEASURED VARIABLES
             Furnaces                   | 1.Stack NOx concentration and
                                            exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Production rate;
                                        |
   Furnaces with low NOx burners        | All variables identified for
                                          furnaces.
             Furnaces                   | All variables identified for
                                          furnaces.
             with combustion modification
             Furnaces with SCR          | All variables identified for
                                          furnaces; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SCR;
                                        |
             Furnaces with SNCR         | All variables identified for
                                          furnaces; AND
                                        | 4.Ammonia (or urea) injection
                                            rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SNCR;
                                        |




                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                                EQUIPMENT TYPE : OVENS

           EQUIPMENT                    |            MEASURED VARIABLES
             Ovens                      | 1.Stack NOx concentration and
                                            exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                             rate;
                                        | 2.Status codes;
                                        | 3.Production rate;
                                        |
     Ovens with low NOx burners         | All variables identified for
                                          ovens.
     Ovens with combustion modification | All variables identified
                                          for ovens.
             Ovens with SCR             | All variables identified for
                                          ovens; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SCR;
                                        |
             Ovens with SNCR            | All variables identified for
                                            ovens; AND
                                        | 4.Ammonia (or urea) injection
                                            rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SNCR;
                                        |




                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                               EQUIPMENT TYPE : DRYERS

                  EQUIPMENT             |          MEASURED VARIABLES
    Dryers                              |  1.  Stack NOx concentration and
                                               exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Production rate;
                                        |
     Dryers with low NOx burners        | All variables identified for
                                           dryers.
     Dryers with combustion modification| All variables identified
                                           for dryers.
             Dryers with FGR            | All variables identified for
                                           dryers; AND
                                        | 4.Flue gas recirculation rate.
             Dryers with SCR            | All variables identified for
                                           dryers; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SCR;
                                        |
             Dryers with SNCR           | All variables identified for
                                           dryers; AND
                                        | 4.Ammonia (or urea) injection
                                            rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SNCR;
                                        |
             Dryers with NSCR           | All variables identified for
                                           dryers; AND
                                        | 4.Natural gas (or other HC)
                                            injection rate.




                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                           EQUIPMENT TYPE : PROCESS HEATERS

            EQUIPMENT                   | MEASURED VARIABLES
             Process heaters            | 1.Stack NOx concentration and
                                            exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Production rate;
                                        |
             Process heaters            | All variables identified for
                                           process heaters.
             with low NOx burners
    Process heaters with combustion     | All variables identified for
                                            process heaters.
             modification
             Process heaters with FGR   | All variables identified for
                                            process heaters; AND
                                        | 4.Flue gas recirculation rate.
             Process heaters with SCR   | All variables identified for
                                           process heaters; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SCR;
                                        |
             Process heaters with SNCR  | All variables identified for
                                           process heaters; AND
                                        | 4.Ammonia (or urea) injection
                                            rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SNCR;
                                        |
             Process heaters with NSCR  | All variables identified for
                                          process heaters; AND
                                        | 4.Natural gas (or other HC)
                                            injection rate.
             Process heaters with water | All variables identified for
                                           process heaters; AND
             (or steam) injection       | 4.Water (or steam) injection rate.



                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                            EQUIPMENT TYPE : INCINERATORS

        EQUIPMENT                       | MEASURED VARIABLES
             Incinerators               |  1.  Stack NOx concentration and
             exhaust flow rate; OR
                                        |   Stack NOx, and O2
    concentrations, and fuel flow rate;
                                        | 2.Status codes;
                                        | 3.Production rate;
                                        |
             Incinerators with SCR      | All variables identified for
             incinerators; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
             stream to SCR;
                                        |
             Incinerators with SNCR     | All variables identified for
             incinerators; AND
                                        | 4.Ammonia (or urea) injection
             rate;
                                        | 5.Temperature of the inlet gas
             stream to SNCR;
                                        |




                                Table 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                       EQUIPMENT TYPE : REFINERY TAIL GAS UNITS

         EQUIPMENT                      |       MEASURED VARIABLES
             Refinery tail gas units    | 1.Stack NOx concentration and
                                            exhaust flow rate; OR;
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Production rate;
                                        |




                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                             EQUIPMENT TYPE : TEST CELLS

            EQUIPMENT                   |        MEASURED VARIABLES
             Test cells                 | 1.Stack NOx concentration and
                                            exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Shaft horsepower output;
                                        |
             Test cells with SCR        | All variables identified for
                                           test cells; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SCR;
                                        |
         Test cells with Packed Chemical|All variables identified for
                                          test cells; AND
             Scrubber                   | 4.Chemical injection rate.




                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                     EQUIPMENT TYPE : INTERNAL COMBUSTION ENGINES

         EQUIPMENT                      |      MEASURED VARIABLES
             Internal combustion engines| 1.Stack NOx concentration and
                                            exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Throttle setting shaft
                                            horsepower output;
                                        |
        Internal combustion engines with| All variables identified
                                          for internal combustion engines.
         combustion modification
        Internal combustion engines with| All variables identified
         for internal combustion engines.
        Injection Timing Retard 4 degree
        Internal combustion engines with| All variables identified
             for internal combustion engines.
             turbocharger, aftercooler,
             intercooler.
        Internal combustion engines     | All variables identified for
             internal combustion engines;
             with SCR                   | AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
             stream to SCR;
                                        |
        Internal combustion engines     | All variables identified for
             internal combustion engines; with NSCR
             AND
                                        | 4.Natural gas (or other HC)
             injection rate.




                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                            EQUIPMENT TYPE : GAS TURBINES

         EQUIPMENT                      |       MEASURED VARIABLES
             Gas turbines               | 1.Stack NOx concentration and
                                            exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Shaft horsepower output;
                                        |
             Gas turbines with Water    | All variables identified for
                                           gas turbines; AND
             or Steam Injection         | 4.Water or steam injection
                                            rate;
             Gas turbines with SCR      | All variables identified for
                                          gas turbines; AND
             and Steam Injection        | 4.Ammonia injection rate; or
                                        | 5.Steam injection rate
                                        | 6.Temperature of the inlet gas
                                            stream to SCR;
                                        |
             Gas turbines with SCR      | All variables identified for
                                          gas turbines; AND
             and Water Injection        | 4.Ammonia injection rate; or
                                        | 5.Water injection rate
                                        | 6.Temperature of the inlet gas
                                            stream to SNCR;
                                        |



                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                         EQUIPMENT TYPE : KILNS AND CALCINERS

                  EQUIPMENT             |       MEASURED VARIABLES
             Kilns and calciners        | 1.Stack NOx concentration and
                                            exhaust flow rate; OR
                                        |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Production rate;
                                        |
            Kilns and calciners         | All variables identified for
                                          kilns and calciners.
                                          with low NOx burners
            Kilns and calciners         | All variables identified for
                                          kilns and calciners.
        with combustion modifications
          Kilns and calciners with FGR  | All variables identified for
                                           kilns and calciners; AND
                                        | 4.Flue gas recirculation rate.
          Kilns and calciners with SCR  |All variables identified for
                                          kilns and calciners; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SCR;
                                        |
           Kilns and calciners with SNCR| All variables identified for
                                          kilns and calciners; AND
                                        | 4.Ammonia (or urea) injection
                                            rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SNCR;
                                        |
           Kilns and calciners with NSCR| All variables identified for
                                          kilns and calciners; AND
                                        | 4.Natural gas (or other HC)
                                            injection rate.




                                TABLE 2-A (CONTINUED)

                       MEASURED VARIABLES FOR MAJOR NOx SOURCES

                   EQUIPMENT TYPE : FLUID CATALYTIC CRACKING UNITS

                  EQUIPMENT             |      MEASURED VARIABLES
             FCCUs                      | 1.Stack NOx concentration and
                                            exhaust flow rate; OR
             (CO Boilers)               |   Stack NOx, and O2
                                            concentrations, and fuel flow 
                                            rate;
                                        | 2.Status codes;
                                        | 3.Production rate;
                                        |
             FCCUs                      | All variables identified for
                                          refinery tail gas units.
                                          with combustion modifications
             FCCUs with SCR             | All variables identified for
                                          refinery tail gas units; AND
                                        | 4.Ammonia injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SCR;
                                        |
             FCCUs with SNCR            | All variables identified for
                                          refinery tail gas units; AND
                                        | 4.Ammonia (or urea) injection rate;
                                        | 5.Temperature of the inlet gas
                                            stream to SNCR;
                                        |
             FCCUs with NSCR            | All variables identified for
                                          refinery tail gas units; AND
                                        | 4.Natural gas (or other HC)
                                          injection rate.





                                      TABLE 2-B

                     REPORTED VARIABLES FOR ALL MAJOR NOx SOURCES

                  EQUIPMENT             |       REPORTED VARIABLES
                        All Major       | 1.Total daily mass emissions
                                            from each source;
                    NOx sources         | 2.Daily Status codes.
                                        |