40 CFR §63.1319

1. (a)Except as specified in paragraphs (b) and (c) of this section, owners or operators using a control or recovery device to comply with § 63.1316 shall comply with the applicable recordkeeping provisions specified in § 63.1315(a), except that, for the purposes of this paragraph (a), references to group determinations (i.e., total resource effectiveness) do not apply, and owners or operators are not required to comply with § 63.113.
2. (b)Records demonstrating compliance with the applicability determination procedure for PET affected sources using a dimethyl terephthalate process. Owners or operators complying with § 63.1316(b)(1)(i) by demonstrating that mass emissions per mass product are less than or equal to the level specified in § 63.1316(b)(1)(i) (i.e., 0.12 kg organic HAP per Mg of product) shall keep the following records.
   1. (1)Results of the mass emissions per mass product calculation specified in § 63.1318(b).
   2. (2)Records of any change in process operation that increases the mass emissions per mass product.
3. (c)Records demonstrating compliance with temperature limits for final condensers. Owners or operators of continuous process vents complying with § 63.1316(b)(1)(i)(B) or § 63.1316(c)(1)(ii) shall keep records of the daily averages required by § 63.1318, per the recordkeeping provisions specified in § 63.1335(d).