40 CFR §60.2935

1. (a)Yes, you may conduct a repeat performance test at any time to establish new values for the operating limits. The Administrator may request a repeat performance test at any time.
2. (b)For each very small municipal waste combustion unit or institutional waste incineration unit for which you opt to demonstrate continuous compliance following the requirements in § 60.2932(d), if you want to establish new operating parameter limits or establish a different waste profile, you must comply with either paragraph (b)(1) or (2) of this section.
   1. (1)You must conduct a new performance test of the unit using the test methods listed in table 1b to this subpart and the procedures in § 60.2922 with a waste stream representative of the new waste profile or under the new operating parameter limits.
   2. (2)You must identify a representative performance test that meets the requirements in § 60.2929(c). You must submit the information in § 60.2929(b)(1) and (2) to the Administrator.