federal_register: 2023-03578
Data license: Public Domain (U.S. Government data) · Data source: Federal Register API & Regulations.gov API
This data as json
| document_number | title | type | abstract | publication_date | pub_year | pub_month | html_url | pdf_url | agency_names | agency_ids | excerpts | regulation_id_numbers |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-03578 | Reference Measurement Principle and Calibration Procedure for the Measurement of Ozone in the Atmosphere (Chemiluminescence Method) | Proposed Rule | The Environmental Protection Agency (EPA) is proposing to update the current ozone absorption cross-section to the recommended consensus-based cross-section value of 1.1329x10<SUP>-</SUP>\17\ cm\2\ molecule<SUP>-</SUP>\1\ or 304.39 atm<SUP>-</SUP>\1\ cm<SUP>-</SUP>\1\, with an uncertainty of 0.94 atm<SUP>-</SUP>\1\ cm<SUP>-</SUP>\1\. The new value is 1.2% lower than the current value of 308 atm<SUP>-</SUP>\1\ cm<SUP>-</SUP>\1\, and reduces the uncertainty in the value to 0.31%. The adoption of this updated ozone absorption cross-section could result in increases in measured ozone concentrations but given the existing sources of potential variability in monitoring data, it is unlikely that there would be any consistent measurable and predictable effect on reported data. The EPA is also proposing to update the dates of publication for two references, add a new reference for the updated cross-section value, and move the figures inadvertently placed in Section 6.0 References to a new Section 7.0 Figures. | 2023-02-24 | 2023 | 2 | https://www.federalregister.gov/documents/2023/02/24/2023-03578/reference-measurement-principle-and-calibration-procedure-for-the-measurement-of-ozone-in-the | https://www.govinfo.gov/content/pkg/FR-2023-02-24/pdf/2023-03578.pdf | Environmental Protection Agency | 145 | The Environmental Protection Agency (EPA) is proposing to update the current ozone absorption cross-section to the recommended consensus-based cross-section value of 1.1329x10<SUP>-</SUP>\17\ cm\2\ molecule<SUP>-</SUP>\1\ or 304.39 atm<SUP>-</SUP>\1\... |