§50.7. National primary and secondary ambient air quality standards for PM 2.5 . — Inbound Citations

(e) EPA, State, interstate, and substate agencies shall provide full and open information on legal proceedings to the extent not inconsistent with court requirements, and where such disclosure would not prejudice the conduct of the litigation. EPA actions with regard to affording opportunities for public comment before the Department of Justice consents to a proposed judgment in an action to enjoin discharges of pollutants into the environment shall be consistent with the Statement of Policy issued by the Department of Justice (see title 28, CFR, chapter 1, § 50.7).

All measurements of air quality that are expressed as mass per unit volume (e.g., micrograms per cubic meter) other than for particulate matter (PM2.5) standards contained in §§ 50.7, 50.13, 50.18, and 50.20, and lead standards contained in § 50.16 shall be corrected to a reference temperature of 25 (deg) C and a reference pressure of 760 millimeters of mercury (1,013.2 millibars). Measurements of PM2.5 for purposes of comparison to the standards contained in §§ 50.7, 50.13, 50.18, and 50.20, and of lead for purposes of comparison to the standards contained in § 50.16 shall be reported based on actual ambient air volume measured at the actual ambient temperature and pressure at the monitoring site during the measurement period.