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42 U.S.C. 7401 et seq.
43 FR 51393, Nov. 3, 1978, unless otherwise noted.
68 FR 5158, Jan. 31, 2003, unless otherwise noted.
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(a) Use EPA Reference Method 9 in appendix A of 40 CFR part 60 to determine compliance with the opacity limit.
(b) Conduct an initial test for opacity as specified in § 60.8 of subpart A of 40 CFR part 60.
(c) After the initial test for opacity, conduct annual tests no more than 13 calendar months following the date of your previous test.