Notice is hereby given that the Environmental Protection Agency (EPA) has designated one new reference method for measuring concentrations of nitrogen dioxide (NO2 ) in ambient air.
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Ambient Air Monitoring Reference and Equivalent Methods; Designation of One New Reference Method
Notice is hereby given that the Environmental Protection Agency (EPA) has designated one new reference method for measuring concentrations of nitrogen dioxide (NO<INF>2</INF>) i...
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83 FR 6174
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“Ambient Air Monitoring Reference and Equivalent Methods; Designation of One New Reference Method,” thefederalregister.org (February 13, 2018), https://thefederalregister.org/documents/2018-02813/ambient-air-monitoring-reference-and-equivalent-methods-designation-of-one-new-reference-method.