EPA Proposes Clean Data Determination for Washington, DC-MD-VA Nonattainment Area

Summary

The Environmental Protection Agency (EPA) is proposing to determine that the Washington, DC-MD-VA nonattainment area has clean data for the 2015 ozone national ambient air quality standard, based on quality-assured monitoring data from 2019 to 2021.

Original source language: Federal Register — Environmental Protection AgencyOpen original release →

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