40 CFR Appendix Table 32 to Subpart UUU of Part 63, Requirements for Performance Tests for HAP Emissions From Sulfur Recovery Units Not Subject to the New Source Performance Standards for Sulfur Oxides
Table 32 to Subpart UUU of Part 63  Requirements for Performance Tests for HAP Emissions From Sulfur Recovery Units Not Subject to the New Source Performance Standards for Sulfur Oxides
As stated in § 63.1568(b)(2) and (3), you shall meet each requirement in the following table that applies to you.
For . . .  You must . . .  Using . . .  According to these
requirements . . . 

1. Option 1: Elect NSPS. Each new and existing sulfur recovery unit  a. Measure SO2 concentration (for an oxidation or reduction system followed by incineration) or measure the concentration of reduced sulfur (or SO2 if you use an instrument to convert the reduced sulfur to SO2) for a reduction control system without incineration  Data from continuous emission monitoring system  Collect SO2 monitoring data every 15 minutes for 24 consecutive operating hours. Reduce the data to 1hour averages computed from four or more data points equally spaced over each 1hour period. 
b. Measure O2 concentration for the inlet air/oxygen supplied to the system, if using Equation 1 of 
i. Data from continuous emission monitoring system; or  Collect O2 monitoring data every 15 minutes for 24 consecutive operating hours. Reduce the data to 1hour averages computed from four or more data points equally spaced over each 1hour period; and average over the 24hour period for input to Equation 1 of 

ii. Data from flow monitor for ambient air and purchased oxygenenriched gas  Collect gas flow rate monitoring data every 15 minutes for 24 consecutive operating hours. Reduce the data to 1hour averages computed from 4 or more data points equally spaced over each 1hour period; calculate the hourly O2 percent using Equation 10 of 

2. Option 2: TRS limit, using CEMS. Each new and existing sulfur recovery unit  Measure the concentration of reduced sulfur (or SO2 if you use an instrument to convert the reduced sulfur to SO2)  Data from continuous emission monitoring system  Collect TRS data every 15 minutes for 24 consecutive operating hours. Reduce the data to 1hour averages computed from four or more data points equally spaced over each 1hour period. 
3. Option 2: TRS limit, if using continuous parameter monitoring systems. Each new and existing sulfur recovery unit  a. Select sampling port's location and the number of traverse ports  Method 1 or 1A in Appendix A1 to 
Sampling sites must be located at the outlet of the control device and prior to any releases to the atmosphere. 
b. Determine velocity and volumetric flow rate  Method 2, 2A, 2C, 2D, or 2F in appendix A1 to 

c. Conduct gas molecular weight analysis; obtain the oxygen concentration needed to correct the emission rate for excess air  Method 3, 3A, or 3B in appendix A2 to 
Take the samples simultaneously with reduced sulfur or moisture samples.  
d. Measure moisture content of the stack gas  Method 4 in appendix A3 to 
Make your sampling time for each Method 4 sample equal to that for 4 Method 15 samples.  
e. Measure the concentration of TRS  Method 15 or 15A in appendix A5 to 
If the crosssectional area of the duct is less than 5 square meters (m ^{2}) or 54 square feet, you must use the centroid of the cross section as the sampling point. If the crosssectional area is 5 m ^{2} or more and the centroid is more than 1 meter (m) from the wall, your sampling point may be at a point no closer to the walls than 1 m or 39 inches. Your sampling rate must be at least 3 liters per minute or 0.10 cubic feet per minute to ensure minimum residence time for the sample inside the sample lines.  
f. Calculate the SO2 equivalent for each run after correcting for moisture and oxygen  The arithmetic average of the SO2 equivalent for each sample during the run  
g. Correct the reduced sulfur samples to zero percent excess air  Equation 1 of 

h. Establish each operating limit in Table 30 of this subpart that applies to you  Data from the continuous parameter monitoring system  
i. Measure thermal incinerator: combustion zone temperature  Data from the continuous parameter monitoring system  Collect temperature monitoring data every 15 minutes during the entire period of the performance test; and determine and record the minimum hourly average temperature from all the readings.  
j. Measure thermal incinerator: oxygen concentration (percent, dry basis) in the vent stream  Data from the continuous parameter monitoring system  Collect oxygen concentration (percent, dry basis) data every 15 minutes during the entire period of the performance test; and determine and record the minimum hourly average percent excess oxygen concentration. 
[ 80 FR 75312, Dec. 1, 2015]