As stated in § 63.1569(c)(1), you shall meet each requirement in the following table that applies to you.
| If you elect this standard . . .
| You shall demonstrate continuous compliance by . . .
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| 1. Option 1: Flow indicator, level recorder, or electronic valve position monitor. | Monitoring and recording on a continuous basis or at least every hour whether flow is present in the bypass line; visually inspecting the device at least once every hour if the device is not equipped with a recording system that provides a continuous record; and recording whether the device is operating properly and whether flow is present in the bypass line.
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| 2. Option 2: Car-seal or lock-and-key device | Visually inspecting the seal or closure mechanism at least once every month; and recording whether the bypass line valve is maintained in the closed position and whether flow is present in the line.
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| 3. Option 3: Solid blind flange | Visually inspecting the blind at least once a month; and recording whether the blind is maintained in the correct position such that the vent stream cannot be diverted through the bypass line.
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| 4. Option 4: Vent to control device | Monitoring the control device according to appropriate subpart requirements.
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| 5. Option 1, 2, 3, or 4 | Recording and reporting the time and duration of any bypass. |