federal_register: E9-20395
Data license: Public Domain (U.S. Government data) · Data source: Federal Register API & Regulations.gov API
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| document_number | title | type | abstract | publication_date | pub_year | pub_month | html_url | pdf_url | agency_names | agency_ids | excerpts | regulation_id_numbers |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| E9-20395 | Revisions to Test Method for Determining Stack Gas Velocity Taking Into Account Velocity Decay Near the Stack Walls | Proposed Rule | EPA is proposing to revise the voluntary test method for determining stack gas velocity taking into account the velocity decay near the stack or duct walls. When the method was originally developed, it addressed only sources where the flow measurements were made in locations with circular cross-sections. The proposed revised test method addresses flow measurement locations with both circular and rectangular cross-sections. The proposed revisions also include changes that increase the accuracy of the method and simplify its application. The primary users of the proposed method are likely to be owners and operators of utility units subject to the Acid Rain Program under Title IV of the Clean Air Act; and certain large electric generating units and large non-electric generating units that are subject to the nitrogen oxides (NO<INF>X</INF>) state implementation plan (SIP) call under Title I of the Clean Air Act. These sources use volumetric stack flow rate monitors in order to measure sulfur dioxide (SO<INF>2</INF>) and NO<INF>X</INF> mass emissions and unit heat input, and must conduct periodic relative accuracy test audits (RATAs) of the flow rate monitors at these units. | 2009-08-25 | 2009 | 8 | https://www.federalregister.gov/documents/2009/08/25/E9-20395/revisions-to-test-method-for-determining-stack-gas-velocity-taking-into-account-velocity-decay-near | https://www.govinfo.gov/content/pkg/FR-2009-08-25/pdf/E9-20395.pdf | Environmental Protection Agency | 145 | EPA is proposing to revise the voluntary test method for determining stack gas velocity taking into account the velocity decay near the stack or duct walls. When the method was originally developed, it addressed only sources where the flow measurements... |