3745-23-02. Methods of measurement

[Comment: For dates of non-regulatory government publications, publications of recognized organizations and associations, federal rules, and federal statutory provisions referenced in this rule, see paragraph (C) of rule 3745-23-01 of the Administrative Code titled "Referenced materials."]

(A) For purposes of ascertaining, defining, and measuring ambient air quality, nitrogen dioxide shall be measured by the methods stated in paragraph (B) of this rule or by such other methods as may be approved by the director. Such measurements shall be corrected to standard conditions for purposes of comparing measurements with the ambient air quality standard set forth in rule 3745-25-02 of the Administrative Code.

(B) Concentrations of nitrogen dioxide shall be determined through the use of a reference method required by 40 CFR 50.11 based on 40 CFR Part 50, Appendix F, or through the use of continuous sampling and recording devices as approved by USEPA in accordance with 40 CFR Part 53 and designated reference or equivalent methods.

Five Year Review (FYR) Dates: 8/14/2019 and 08/14/2024
Promulgated Under: 119.03
Statutory Authority: 3704.03(D)
Rule Amplifies: 3704.03(A), 3704.03(D)
Prior Effective Dates: 02/15/1972, 09/23/2002, 05/15/2006, 04/18/2009, 09/08/2014

Prior History: (Effective: 09/08/2014
R.C. 119.032 review dates: 05/20/2014 and 09/08/2019
Promulgated Under: 119.03
Statutory Authority: 3704.03(D)
Rule Amplifies: 3704.03(A), 3704.03(D)
Prior Effective Dates: 2/15/72, 9/23/02, 5/15/06, 4/18/09)