250-RICR-120-05-1. Visible Emissions

1.1 Purpose A. The purpose of this Regulation is to limit the opacity of visible emissions from sources of air contaminants. 1.2 Authority A. These Regulations are authorized pursuant to R.I. Gen. Laws § 42-17.1-2(19) and Chapter 23-23, and have been promulgated pursuant to the procedures set forth in the Rhode Island Administrative Procedures Act, R.I. Gen. Laws Chapter 42-35. 1.3 Repealed 1.4 Repealed 1.5 Definitions A. Unless otherwise expressly defined in this Section, the terms used in this Regulation shall be defined by reference to Part 0 of this Subchapter (General Definitions). 1.6 Limitations A. No person shall emit into the atmosphere from any source any air contaminant for a period or periods aggregating more than three minutes in any one hour which is greater than or equal to 20 percent opacity. 1.7 Test Procedures and Observer Qualifications A. All tests must be performed as per the 40 C.F.R. § 60 (2020), Appendix A-4, Method 9. B. All observers must qualify as per: 1. 40 C.F.R. § 60 (2020), Appendix A-4, Method 9; or, 2. Alternative EPA approved method ALT-152 to the procedures of section 3.2 of 40 C.F.R. § 60 (2020), Appendix A-4 Method 9. ALT-152 is the alternative method of certification of a candidate in Method 9 opacity reading through use of a virtual reality (“VR”) headset. 1.8 Exemptions A. Where the presence of uncombined water is the only reason for failure to meet the requirements of § 1.6 of this Part, such failure shall not be a violation of this Regulation.