40 CFR Table 5
Required Elements of Floor-Level Mercury Vapor Measurement and Cell Room Monitoring Plans
June 9, 2020
Your Floor-Level Mercury Vapor Measurement Plan required by §63.8192(d) and Cell Room Monitoring Plan required by §63.8192(g) must contain the elements listed in the following table:
Open Table
| You must specify in your plan . . . | Additional requirements |
|---|---|
| Floor-Level Mercury Vapor Measurement Plan | |
| 1. Locations in the cell room where you will measure the level of mercury vapor | The locations must be representative of the entire cell room floor area. At a minimum you must measure the level of mercury vapor above mercury-containing cell room equipment, as well as areas around the cells, decomposes, or other mercury-containing equipment. |
| 2. Equipment or sampling and analytical methods that you will use to measure the level of mercury vapor | If an instrument or other equipment is used, the plan must include manufacturer specifications and calibration procedures. The plan must also include a description of how you will ensure that the instrument will be calibrated and maintained according to manufacturer specifications. |
| 3. Measurement frequency | Measurements must take place at least once each half day. |
| 4. Number of measurements | At least three readings must be taken at each sample location and the average of these readings must be recorded. |
| 5. A floor-level mercury concentration action level | The action level may not be higher than 0.05 mg/m3. |
| Cell Room Monitoring Plan | |
| 1. Details of your mercury monitoring system. | |
| 2. How representative sampling will be conducted | Include some pre-plan measurements to demonstrate the profile of mercury concentration in the cell room and how the selected sampling locations ensure conducted representativeness. |
| 3. Quality assurance/quality control procedures for your mercury monitoring system | Include a description of how you will keep records or other means to demonstrate that the system is operating properly. |
| 4. Your action level | Include the background data used to establish your level. |
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