40 CFR Table 6
Establishing Operating Limits
June 9, 2020
As stated in §63.11211, you must comply with the following requirements for establishing operating limits:
Open Table
| If you have an applicable emission limit for . . . | And your operating limits are based on . . . | You must . . . | Using . . . | According to the following requirements |
|---|---|---|---|---|
| 1. PM or mercury | a. Wet scrubber operating parameters | Establish site-specific minimum scrubber pressure drop and minimum scrubber liquid flow rate operating limits according to §63.11211(b) | Data from the pressure drop and liquid flow rate monitors and the PM or mercury performance stack tests | (a) You must collect pressure drop and liquid flow rate data every 15 minutes during the entire period of the performance stack tests; |
| (b) Determine the average pressure drop and liquid flow rate for each individual test run in the three-run performance stack test by computing the average of all the 15-minute readings taken during each test run. | ||||
| b. Electrostatic precipitator operating parameters | Establish a site-specific minimum total secondary electric power operating limit according to §63.11211(b) | Data from the secondary electric power monitors and the PM or mercury performance stack tests | (a) You must collect secondary electric power data every 15 minutes during the entire period of the performance stack tests; | |
| (b) Determine the average total secondary electric power for each individual test run in the three-run performance stack test by computing the average of all the 15-minute readings taken during each test run. | ||||
| 2. Mercury | Dry sorbent or activated carbon injection rate operating parameters | Establish a site-specific minimum sorbent or activated carbon injection rate operating limit according to §63.11211(b) | Data from the sorbent or activated carbon injection rate monitors and the mercury performance stack tests | (a) You must collect sorbent or activated carbon injection rate data every 15 minutes during the entire period of the performance stack tests; |
| (b) Determine the average sorbent or activated carbon injection rate for each individual test run in the three-run performance stack test by computing the average of all the 15-minute readings taken during each test run. | ||||
| (c) When your unit operates at lower loads, multiply your sorbent or activated carbon injection rate by the load fraction, as defined in §63.11237, to determine the required injection rate. | ||||
| 3. CO | Oxygen | Establish a unit-specific limit for minimum oxygen level | Data from the oxygen analyzer system specified in §63.11224(a) | (a) You must collect oxygen data every 15 minutes during the entire period of the performance stack tests; |
| (b) Determine the average hourly oxygen concentration for each individual test run in the three-run performance stack test by computing the average of all the 15-minute readings taken during each test run. | ||||
| 4. Any pollutant for which compliance is demonstrated by a performance stack test | Boiler operating load | Establish a unit-specific limit for maximum operating load according to §63.11212(c) | Data from the operating load monitors (fuel feed monitors or steam generation monitors) | (a) You must collect operating load data (fuel feed rate or steam generation data) every 15 minutes during the entire period of the performance test. |
| (b) Determine the average operating load by computing the hourly averages using all of the 15-minute readings taken during each performance test. | ||||
| (c) Determine the average of the three test run averages during the performance test, and multiply this by 1.1 (110 percent) as your operating limit. |
[78 FR 7520, Feb. 1, 2013, as amended at 81 FR 63130, Sept. 14, 2016]
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