CFR /  Title 40  /  Part 60  /  Sec. 60.1450 How must I monitor opacity for air curtain incinerators

(a) Use EPA Reference Method 9 in appendix A of this part to determine compliance with the opacity limit.

(b) Conduct an initial test for opacity as specified in Sec. 60.8.

(c) After the initial test for opacity, conduct annual tests no more than 13 calendar months following the date of your previous test.