Linn County Air Quality Division
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Bulk Gasoline Distribution Plants

40 CFR Part 63, Subpart BBBBBB (NESHAP 6B)

General Permit for Small Plant - < 20,000 gallons per month (DOC File | PDF File)
General permit for Large Plant - < 20,000 gallons per day (DOC File | PDF File)
Compliance Assistance Materials (Iowa Waste Reduction Center)

Initial Notification Form - January 10, 2011 (DOC File | PDF File)

Brief Summary
New EPA Regulations for
Gasoline Distribution Bulk Terminals, Bulk Plants, and Pipeline Facilities
40 CFR Part 63 Subpart BBBBBB

EPA has requirements to reduce air pollution from bulk gasoline terminals, pipeline break-out stations, pipeline pumping stations, and bulk gasoline plants. The vapors from these facilities pose a health risk to anyone who breathes air containing them. About 100 million pounds of volatile organic compounds and 5 million pounds of hazardous air pollutants will be reduced by these standards.

NOTE: NESHAP 6B requirements vary by the size and type of the facility being operated. The following is a summary of the new NESHAP 6B requirements facilities must comply with by January 10, 2011. New facilities must comply on the date when operations begin. For additional details and assistance, please contact the Air Quality Branch.

For All Facilities

  • Owners or operators must check for equipment leaks monthly by smelling, listening to, and looking at all pieces of equipment in service for liquid- or vapor-phase gasoline.

Bulk Gasoline Plants (with a throughput of < 20,000 gallons per day)

  • For storage tanks that can hold more than 250 gallons, owners or operators must load the storage tank using submerged fill (drop tubes) such that, when liquid is flowing through the pipe, the pipe opening is no more than 6 inches from the bottom of the tank.
  • Cargo Tank Loading Racks must use submerged fill (drop tubes).

Bulk Gasoline Terminals and Pipeline Facilities

  1. Storage Tanks
    • Storage tanks ≥ 20,000 gallons each must use specified floating roofs and seals, or a closed vent system and control device to reduce emissions by 95%
    • Storage tanks < 20,000 gallons each must cover the tank with a fixed roof and maintain all openings in a closed position when the tank is not in use.
  2. Cargo Tank Loading Racks (throughput ≥ 250,000 gallons per day)
    • Owners or operators must reduce the total organic compound (TOC) emissions to 0.00067 pounds per gallon (80 milligrams per liter) of gasoline loaded into cargo tanks; and
    • Only load gasoline into cargo tanks that are demonstrated to be vapor-tight.
  3. Cargo Tank Loading Racks (throughput < 250,000 gallons per day)
    • Owners or operators must use submerged fill (drop tubes) when loading cargo tanks.


  • Control devices used on loading racks at bulk terminals must be tested to show that they meet the emission limit and the operation of the control device must be continuously monitored.
  • Closed vent systems and control devices used on storage tanks also must be tested to show they meet the emission limit.
  • Recent performance tests or documentation may be used to demonstrate said control devices meeting the emission limit(s) and other operating requirements.
  • Storage tank roofs and seals at bulk terminals and pipeline break-out stations must be inspected annually.
  • Storage tank and loading rack control devices must be continuously monitored for proper operation and compliance with the emission limit.


  • Bulk plants already using submerged fill (drop tubes) under state, local, or tribal regulation or permit are not required to submit an Initial Notification or Notification of Compliance Status, provided those requirements meet 40 CFR §63.11086(a) and the facility is in compliance with those requirements.
  • For owners or operators already meeting the NESHAP 6B requirements, the Notification of Compliance Status form may be used instead of the Initial Notification, provided it contains the information required under 40 CFR §63.11086(e).
  • For owners or operators not already meeting the NESHAP 6B requirements, an Initial Notification for and a Notification of Compliance Status mus be submitted.
  • Each owner or operator of a bulk gasoline terminal that is not yet meeting the NESHAP 6B requirements must submit a Notification of Performance test form prior to completing the first compliance demonstration test on vapor processing and collection systems at the facility.
  • Owners or operators must submit semi-annual compliance reports and report any excess emissions during any "high emissions" event.

Recordkeeping Requirements

Records must be kept for a period of five (5) years either at the facility or electronically if it is an exact copy of the original record and can be accessed immediately. These include records of each cargo tank loading (including monitoring of parameters), cargo tank vapor tightness test results and certifications, records of equipment component inspections, and records of vapor processor monitoring of system parameters and test results.