Emission Limitations

For each fed-batch fermenter producing yeast in the following fermentation stage . . . 98-percent option: You must not exceed the following VOC emission limitation a according to the timeline in Table 7 to this subpart . . . Average option: You must not exceed the following VOC emission limitation a according to the timeline in Table 7 to this subpart . . . Batch option: You must not exceed the following VOC emission limitation a according to the timeline in Table 7 to this subpart . . . Last stage 100 ppmv (measured as propane) for BAVOC for at least 98 percent of all batches in each 12-month calculation period described in § 63.2171(b) and (e) 95 ppmv (measured as propane) for the average BAVOC of all batches in this stage in each 12-month calculation period described in § 63.2171(c) and (e) 100 ppmv (measured as propane) for BAVOC for each batch. Second-to-last stage 200 ppmv (measured as propane) for BAVOC for at least 98 percent of all batches in each 12-month calculation period described in § 63.2171(b) and (e) 190 ppmv (measured as propane) for the average BAVOC of all batches in this stage in each 12-month calculation period described in § 63.2171(c) and (e) 200 ppmv (measured as propane) for BAVOC for each batch. Third-to-last stage 300 ppmv (measured as propane) for BAVOC for at least 98 percent of all batches in each 12-month calculation period described in § 63.2171(b) and (e) 285 ppmv (measured as propane) for the average BAVOC of all batches in this stage in each 12-month calculation period described in § 63.2171(c) and (e) 300 ppmv (measured as propane) for BAVOC for each batch. a The emission limitation does not apply during the production of specialty yeast.