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As a result of the recent revisions that the U.S. Environmental Protection Agency's (EPA) made to AP-42 Chapter 7.1, industry and regulatory agencies are re-evaluating the tools they use for estimating storage tank emissions. The Bay Area Air Quality Management District is the latest in a list of agencies that have embraced the BREEZE TankESPTM software. Agencies that have purchased TankESP licenses include EPA, states and local jurisdictions. In the West these include:

  • EPA (all regional offices)
  • WA: Northwest Clean Air Agency (NWCAA)
  • NV: Clark County Department of Air Quality (Clark County DAQ)
  • AZ: Maricopa County Air Quality District (MCAQD)
  • CA: Bay Area Air Quality Management District (BAAQMD)

Many companies are already TankESP licensed holders, including the majority of refineries in the Bay Area. A key feature of TankESP is that it allows the user to toggle back and forth between the old AP-42 equations and the new AP-42 equations, which is very handy given that each jurisdiction seems to have its own timetable for when the new equations will be required. Trinity Consultants is currently reaching out to the CA Air Quality Districts to determine each District's timeline for adapting the new AP-42 equations. After a given jurisdiction has transitioned to requiring the new equations for permits going forward, it can be helpful to be able to toggle back to the old equations to check compliance with a previously-issued permit.

Rob Ferry of Trinity Consultants will be providing an in-person training session to BAAQMD in the near future. Please email Tiffany Stefanescu or call (972) 661-8881, if you would like more information or to schedule a web-based demonstration.