SAN DIEGO COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 260.46b - COMPLIANCE AND PERFORMANCE METHODS AND PROCEDURES FOR PARTICULATE MATTER AND NITROGEN OXIDES
(Rev. Effective 9-21-93)

(a) The particulate matter emission standards and opacity limits under Rule 260.43b apply to all times except during periods of startup, shutdown, or malfunction. The nitrogen oxides emission standards under Rule 260.44b apply at all times.

(b) Compliance with the particulate matter emission standards under Rule 260.43b shall be determined through performance testing as described in Section (d) of this rule.

(c) Compliance with the nitrogen oxides emission standards under Rule 260.44b shall be determined through performance testing under Sections (e) or (f) of this rule, or under Sections (g) and (h) of this rule, as applicable. (Rev. Effective 9-21-93)

(d) To determine compliance with the particulate matter emission limits and opacity limits under Rule 260.43b, the owner or operator of an affected facility shall conduct an initial performance test as required under Rule 260.8 using the following procedures and reference methods: (Rev. Effective 9-21-93)

1. Method 3B is used for gas analysis when applying Method 5 or Method 17.
2. Method 5, Method 5B or Method 17 shall be used to measure the concentration of particulate matter as follows:

   (i) Method 5 shall be used at affected facilities without wet Flue Gas Desulfurization (FGD) systems; and

   (ii) Method 17 may be used at facilities with or without wet scrubber systems provided that the stack gas temperature does not exceed a temperature of 160°C (320°F). The procedures of Sections 2.1 and 2.3 of Method 5B may be used in Method 17 only if it is used after a wet FGD system. Do not use Method 17 after wet FGD systems if the effluent is saturated or laden with water droplets.

   (iii) Method 5B is to be used only after wet FGD systems.

3. Method 1 is used to select the sampling site and the number of traverse sampling points. The sampling time for each run is at least 120 minutes and the minimum sampling volume is 1.7 dscm (60 dscf) except that smaller sampling times or volumes may be approved by the Administrator when necessitated by process variables or other factors.
4. For Method 5, the temperature of the sample gas in the probe and filter holder is monitored and is maintained at 160°C (320°F).
5. For determination of particulate emissions, the oxygen or carbon dioxide sample is obtained simultaneously with each run of Method 5, Method 5B or Method 17 by traversing the duct at the same sampling location.
6. For each run using Method 5, Method 5B or Method 17, the emission rate expressed in ng/J heat input is determined using:

   (i) The oxygen or carbon dioxide measurements and particulate matter measurements obtained under this rule.

   (ii) The dry basis F_e factor, and

   (iii) The dry basis emission rate calculation procedure contained in Method 19 (Appendix A).

7. Method 9 is used for determining the opacity of stack emissions.

(e) To determine compliance with the emission limits for nitrogen oxides required under Rule 260.44b, the owner or operator of an affected facility shall conduct the performance test as required under Rule 260.8b using the continuous system for monitoring nitrogen oxides under Rule 260.48(b).

1. For the initial compliance test, nitrogen oxides from the steam generating unit are monitored for 30 successive steam generating unit operating days and the 60-minute average emission rate is used to determine compliance with the nitrogen oxides emission standards under Rule 260.44b. An exceedance of the standard averaged over any given hour is a violation.
2. Following the date on which the initial performance test is completed or is required to be completed under Rule 260.8 of this Regulation, whichever date comes first, the owner or operator of an affected facility which fires coal or which fires residual oil having a nitrogen content greater than 0.30 weight percent shall determine compliance with the nitrogen oxides emission standards under Rule 260.44b on a continuous basis through the use of a 60-minute average emission rate. An exceedance of the standard averaged over any given hour is a violation.
3. Following the date on which the initial performance test is completed or is required to be completed under Rule 260.8 of this Regulation, whichever date comes first, the owner or operator of an affected facility which has a heat input capacity greater than 73 MW (250 million BTU/hour) and which fires natural gas, distillate oil, or residual oil having a nitrogen content of 0.30 weight percent or less shall determine compliance with the nitrogen oxides standards under Rule 260.44b on a continuous basis through the use of a 60-minute average emission rate. An exceedance of the standard averaged over any given hour is a violation.
4. Following the date on which the initial performance test is completed or required to be completed under Rule 260.8 of this Regulation, whichever date comes first, the owner or operator of an affected facility which has a heat input capacity of 73 MW (250 million BTU/hour) or less and which fires natural gas, distillate oil, or residual oil having a nitrogen content of 0.30 weight percent or less shall upon request determine compliance with the nitrogen oxides standards under Rule 260.44b through the use of a 30-day performance test. During periods when performance tests are not requested by the Control Officer, nitrogen oxides emissions data collected pursuant to Rule 260.48b(g)(1) or 260.48b(g)(2) are used to calculate a 60-minute average emission rate on an hourly basis and to prepare excess emission reports.
5. If the owner or operator of an affected facility which fires residual oil does not sample and analyze the residual oil for nitrogen content, as specified in Rule 260.49b(e), the requirements of Subsection (e)(3) of this rule apply and the provisions of Subsection (e)(4) of this rule are inapplicable.

(f) To determine compliance with the emission limit for nitrogen oxides required by Rule 260.44b(a)(4) for duct burners used in combined cycle systems, the owner or operator of an affected facility shall conduct the performance test required under Rule 260.8 using the nitrogen oxides and oxygen measurement procedures in 40 CFR Part 60 Appendix A, Method 20. During the performance test, one sampling site shall be located as close as practical to the exhaust of the turbine, as provided by Section 6.1.1 of Method 20. A second sampling site shall be located at the outlet to the steam generating unit. Measurements of nitrogen oxides and oxygen shall be taken at these two sampling sites simultaneously during the performance test. The nitrogen oxides emission rate from the combined cycle system shall be calculated by subtracting the nitrogen oxides emission rate measured at the sampling site at the outlet from the turbine from the nitrogen oxides emission rate measured at the sampling site at the outlet from the steam generating unit.

(g) The owner or operator of an affected facility described in Rule 260.44b(j) or 260.44b(k) shall demonstrate the maximum heat input capacity of the steam generating unit by operating the facility at maximum capacity for 24 hours. The owner or operator of an affected facility shall determine the maximum heat input capacity using the heat loss method described in Sections 5 and 7.3 of the ASME Power Test Codes 4.1. This demonstration of maximum heat input capacity shall be made during the initial performance test for affected facilities that meet the criteria of Rule 260.44b(j). It shall be made within 60 days after achieving the maximum production rate at which the affected facility will be operated, but not later than 180 days after initial startup of each facility, for affected facilities meeting the criteria of Rule 260.44b(k). Subsequent demonstrations maybe required by the Control Officer at any other time. If this demonstration indicates that the maximum heat input capacity of the affected facility is less than that stated by the manufacturer of the affected facility, the maximum heat input capacity determined during this demonstration shall be used to determine the capacity utilization rate for the affected facility. Otherwise, the maximum heat input capacity provided by the manufacturer is used. (Effective 9-21-93)

(h) The owner or operator of an affected facility described in Rule 260.44b(j) that has a heat input capacity greater than 73 MW (250 million BTU/hour) shall: (Effective 9-21-93)

1. Conduct an initial performance test as required under Rule 260.8 over a minimum of 24 consecutive steam generating unit operating hours at maximum heat input capacity to demonstrate compliance with the nitrogen oxides emission standards under Rule 260.44b using Method 7, 7A, 7E, or other approved reference methods; and
2. Conduct subsequent performance tests once per calendar year or every 400 hours of operation (whichever comes first) to demonstrate compliance with the nitrogen oxides emission standards under Rule 260.44b over a minimum of 3 consecutive steam generating unit operating hours at maximum heat input capacity using Method 7, 7A, 7E, or other approved reference methods.