; and (B) stored in an external container, with or without testing or processing the regulated substance. (11) Regulated substance The term regulated substance means— (A) a substance listed in the table contained in section 4(a); and (B) a substance included as a regulated substance by the Administrator under section 4(c). 4. Listing of regulated substances (a) List of regulated substances Each of the following substances, and any isomers of such a substance, shall be a regulated substance: Chemical Name Common Name Exchange Value CHF 2 CHF 2 HFC–134 1100 CH 2 FCF 3 HFC–134a 1430 CH 2 FCHF 2 HFC–143 353 CHF 2 CH 2 CF 3 HFC–245fa 1030 CF 3 CH 2 CF 2 CH 3 HFC–365mfc 794 CF 3 CHFCF 3 HFC–227ea 3220 CH 2 FCF 2 CF 3 HFC–236cb 1340 CHF 2 CHFCF 3 HFC–236ea 1370 CF 3 CH 2 CF 3 HFC–236fa 9810 CH 2 FCF 2 CHF 2 HFC–245ca 693 CF 3 CHFCHFCF 2 CF 3 HFC–43–10mee 1640 CH 2 F 2 HFC–32 675 CHF 2 CF 3 HFC–125 3500 CH 3 CF 3 HFC–143a 4470 CH 3 F HFC–41 92 CH 2 FCH 2 F HFC–152 53 CH 3 CHF 2 HFC–152a 124 CHF 3 HFC–23 14800. (b) Review The Administrator may— (1) review the exchange values listed in the table contained in subsection (a) on a periodic basis; and (2) subject to notice and opportunity for public comment, adjust the exchange values solely on the basis of— (A) publicly available, peer-reviewed scientific data; and (B) other information consistent with widely used or commonly accepted existing exchange values. (c) Other regulated substances (1) In general Subject to notice and opportunity for public comment, the Administrator may designate a substance not included in the table contained in subsection (a) as a regulated substance if— (A) the substance— (i) is a chemical substance that is a saturated hydrofluorocarbon; and (ii) has an exchange value, as determined by the Administrator in accordance with the basis described in subsection (b)(2), of greater than 53