567—29.1 (455B) Methodology and qualified observer. The federal method for visual determination of opacity of emissions and requirements for qualified observers as defined in Method 9, 40 CFR Part 60 Appendix A as amended through March 12, 1996, is adopted by reference.
To qualify as an observer a candidate must, after meeting the requirements established in Method 9, 40 CFR Part 60 Appendix A, have on record with the department a minimum of 250 readings of black plumes and 250 readings of white plumes, taken at approved smokereading courses.
This rule is intended to implement Iowa Code chapter 455B.