40 CFR Part 63, Subpart DDDDD, Table 7 to Subpart DDDDD of Part 63 - Establishing Operating Limits

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View PDF at GPOPt. 63, Subpt. DDDDD, Table 7
Table 7 to Subpart DDDDD of Part 63—Establishing Operating Limits
As stated in § 63.7520, you must comply with the following requirements for establishing operating limits:
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, TSM, or mercury a. Wet scrubber operating parameters i. Establish a site-specific minimum scrubber pressure drop and minimum flow rate operating limit according to § 63.7530(b) (1) Data from the scrubber pressure drop and liquid flow rate monitors and the PM or mercury performance test (a) You must collect scrubber pressure drop and liquid flow rate data every 15 minutes during the entire period of the performance tests.
(b) Determine the lowest hourly average scrubber pressure drop and liquid flow rate by computing the hourly averages using all of the 15-minute readings taken during each performance test.
b. Electrostatic precipitator operating parameters (option only for units that operate wet scrubbers) i. Establish a site-specific minimum total secondary electric power input according to § 63.7530(b) (1) Data from the voltage and secondary amperage monitors during the PM or mercury performance test (a) You must collect secondary voltage and secondary amperage for each ESP cell and calculate total secondary electric power input data every 15 minutes during the entire period of the performance tests.
(b) Determine the average total secondary electric power input by computing the hourly averages using all of the 15-minute readings taken during each performance test.
2. HCl a. Wet scrubber operating parameters i. Establish site-specific minimum pressure drop, effluent pH, and flow rate operating limits according to § 63.7530(b) (1) Data from the pressure drop, pH, and liquid flow-rate monitors and the HCl performance test (a) You must collect pH and liquid flow-rate data every 15 minutes during the entire period of the performance tests.
(b) Determine the hourly average pH and liquid flow rate by computing the hourly averages using all of the 15-minute readings taken during each performance test.
b. Dry scrubber operating parameters i. Establish a site-specific minimum sorbent injection rate operating limit according to § 63.7530(b). If different acid gas sorbents are used during the HCl performance test, the average value for each sorbent becomes the site-specific operating limit for that sorbent (1) Data from the sorbent injection rate monitors and HCl or mercury performance test (a) You must collect sorbent injection rate data every 15 minutes during the entire period of the performance tests.
(b) Determine the hourly average sorbent injection rate by computing the hourly averages using all of the 15-minute readings taken during each performance test.
(c) Determine the lowest hourly average of the three test run averages established during the performance test as your operating limit. When your unit operates at lower loads, multiply your sorbent injection rate by the load fraction (e.g., for 50 percent load, multiply the injection rate operating limit by 0.5) to determine the required injection rate.
c. Alternative Maximum SO2 emission rate i. Establish a site-specific maximum SO2 emission rate operating limit according to § 63.7530(b) (1) Data from SO2 CEMS and the HCl performance test (a) You must collect the SO2 emissions data according to § 63.7525(m) during the most recent HCl performance tests.
(b) The maximum SO2 emission rate is equal to the lowest hourly average SO2 emission rate measured during the most recent HCl performance tests.
3. Mercury a. Activated carbon injection i. Establish a site-specific minimum activated carbon injection rate operating limit according to § 63.7530(b) (1) Data from the activated carbon rate monitors and mercury performance test (a) You must collect activated carbon injection rate data every 15 minutes during the entire period of the performance tests.
(b) Determine the hourly average activated carbon injection rate by computing the hourly averages using all of the 15-minute readings taken during each performance test.
(c) Determine the lowest hourly average established during the performance test as your operating limit. When your unit operates at lower loads, multiply your activated carbon injection rate by the load fraction (e.g., actual heat input divided by heat input during performance test, for 50 percent load, multiply the injection rate operating limit by 0.5) to determine the required injection rate.
4. Carbon monoxide a. Oxygen i. Establish a unit-specific limit for minimum oxygen level according to § 63.7520 (1) Data from the oxygen analyzer system specified in § 63.7525(a) (a) You must collect oxygen data every 15 minutes during the entire period of the performance tests.
(b) Determine the hourly average oxygen concentration by computing the hourly averages using all of the 15-minute readings taken during each performance test.
(c) Determine the lowest hourly average established during the performance test as your minimum operating limit.
5. Any pollutant for which compliance is demonstrated by a performance test a. Boiler or process heater operating load i. Establish a unit specific limit for maximum operating load according to § 63.7520(c) (1) Data from the operating load monitors or from steam generation monitors (a) You must collect operating load 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.
[76 FR 15664, Mar. 21, 2011, as amended at 78 FR 7203, Jan. 31, 2013]

Title 40 published on 2015-07-01.

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  • 2015-12-04; vol. 80 # 233 - Friday, December 4, 2015
    1. 80 FR 75817 - NESHAP for Brick and Structural Clay Products Manufacturing; and NESHAP for Clay Ceramics Manufacturing: Correction
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      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; correction.
      This action is effective December 28, 2015.
      40 CFR Part 63

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United States Code

Title 40 published on 2015-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 63 after this date.

  • 2015-12-04; vol. 80 # 233 - Friday, December 4, 2015
    1. 80 FR 75817 - NESHAP for Brick and Structural Clay Products Manufacturing; and NESHAP for Clay Ceramics Manufacturing: Correction
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; correction.
      This action is effective December 28, 2015.
      40 CFR Part 63