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For .  .  . 98-percent option: You must demonstrate continuous compliance by .  .  . Average option: You must demonstrate continuous compliance by .  .  . Batch option: You must demonstrate continuous compliance by .  .  .
1. Each fed-batch fermenter producing yeast in a fermentation stage (last, second-to-last, or third-to-last) for which compliance is determined by monitoring VOC concentration in the fermenter exhaust
2. Each fed-batch fermenter producing yeast in a fermentation stage (last, second-to-last, or third-to-last) for which compliance is determined by monitoring brew ethanol concentration and calculating VOC concentration in the fermenter exhaust according to the procedures in §63.2161a
Showing that BAVOC for at least 98 percent of the batches for each 12-month calculation period ending within a semiannual reporting period described in §63.2181(b)(3) does not exceed the applicable maximum concentration in Table 1 to this subpart Showing that the average BAVOC of all batches in each fermentation stage during each 12-month calculation period ending within a semiannual reporting period described in §63.2181(b)(3) does not exceed the applicable concentration in Table 1 to this subpart Showing that BAVOC for each batch within a semiannual reporting period described in §63.2181(b)(3) does not exceed the applicable concentration in Table 1 to this subpart.

aMonitoring brew ethanol concentration to demonstrate compliance is not allowed on and after October 16, 2020, as specified in Table 8 to this subpart.


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