NESHAP for Natural Gas Transmission and Storage (40 CFR part 63, subpart HHH) (Renewal)

OMB 2060-0418

OMB 2060-0418

The National Emission Standards for Hazardous Air Pollutants (NESHAP) for Natural Gas Transmission and Storage (40 CFR Part 63, Subpart HHH) apply to existing facilities and new facilities that are major sources of hazardous air pollutants (HAP) and that either transport or store natural gas prior to entering the pipeline to a local distribution company or to a final end user (if there is no local distribution company). The 2012 amendment eliminates the startup, shutdown and malfunction (SSM) exemption, establishes MACT standards for small glycol dehydration units (glycol dehydrators with an actual annual average natural gas flowrate less than 283,000 scmd or actual average benzene emissions less than 0.9 Mg/yr), and requires facilities using carbon adsorbers as a control device to keep records of their carbon replacement schedule. New facilities include those that commenced construction or reconstruction after the date of proposal. In general, all NESHAP standards require initial notifications, performance tests, and periodic reports by the owners/operators of the affected facilities. They are also required to maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility, or any period during which the monitoring system is inoperative. These notifications, reports, and records are essential in determining compliance with 40 CFR Part 63, Subpart HHH.

The latest form for NESHAP for Natural Gas Transmission and Storage (40 CFR part 63, subpart HHH) (Renewal) expires 2021-10-31 and can be found here.

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