Natural Gas Transmission and Storage Facilities

eCFR Subpart HHH [ecfr.gov]

This subpart applies to:

1. Sources that are Major Sources of HAPs* and transport or store natural gas prior to entering the pipeline to a local distribution company or final end user.

Affected sources:

1. Large glycol dehydration units;
2. Small glycol dehydration units.

*Major Sources of HAPs emit or have the potential to emit:

• ≥ 10 tons/year of any single HAP; or
• ≥ 25 tons/year of total HAPs.
• Area Sources emit less than Major Sources.

Not subject to this subpart:

1. Sources that do not contain glycol dehydration units.

Partial Exemption:

1. A facility with a facilitywide actual annual average natural gas throughput < 28.3 thousand standard cubic meters per day, where glycol dehydration units are the only HAP emission source, is not subject to the requirements of this subpart.
   1. Records shall be maintained as required in §63.10(b)(3).

NSPS – 40 CFR Part 60

Subpart Ka or Kb - Petroleum Liquid Storage
Subpart XX – Bulk Gasoline Terminals (loading racks)
Subpart KKK – Onshore Natural Gas Processing Plants (equipment leaks)
Subpart LLL – Onshore Natural Gas Processing

 

NESHAP – 40 CFR Part 63

Subpart HH – Oil and Natural Gas Production Facilities

eCFR Subpart HHH [ecfr.gov]

Source Classification

1. For small GDUs only
   • Existing = commenced construction on or before Aug 23, 2011
   • New = commenced construction after Aug 23, 2011
2. Large GDUs are not separated into New or Existing sources by date.

Initial Notification

1. Must be submitted by June 17, 2000 or within 1 year of becoming subject to this subpart, whichever is later.
2. Existing small GDUs:
   • Must submit by Oct 15, 2013 or within 1 year of becoming subject to this subpart, whichever is later.

Compliance Dates

1. For GDUs that commenced construction or reconstruction before Feb 6, 1998:
   • Must comply by June 17, 2002
   • Area Sources that become Major Sources must comply within 3 years of becoming Major.
2. For GDUs that commenced construction or reconstruction on or after Feb 6, 1998:
   • Must comply upon startup or by June 17, 1999, whichever is later.
   • Area Sources that become Major Sources must comply immediately upon becoming Major.
3. Existing small GDUs = Must comply by Oct 15, 2015
4. New small GDUs = Comply upon startup or by Oct 15, 2012, whichever is later.

Notice of Intent to Test

• 60 days prior to test

Compliance Status Notification

• Within 180 days of compliance date

Compliance Reports

1. Semi-annual
2. Due 60 days after the end of the applicable reporting period
3. First report
   • Must cover 6-month period beginning with Compliance Status Notification
   • Due 240 days after Compliance Status Notification
4. Subsequent reports every 6 months thereafter