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Updated 10/25/19

SANGEA-4 is a desktop database program with a user-friendly interface that can be used to manage various types of sources throughout a large entity for corporate and/or regulatory reporting requirements.  In order to build a solution that would promote long-term software usability and easy maintenance, the new product was migrated from its previous spreadsheet-based application to stand-alone software in Microsoft .NET framework with Access database files for storing source information. 

SANGEA-4 provides calculation methodologies in various modules that are grouped based on API's Compendium 2009 and corresponding subparts of the U.S. EPA's Mandatory Reporting Rule (MRR) for GHG emissions.  The new software also includes emission factors for criteria pollutants, which enable users to quantify emissions for both GHG and criteria pollutants in one software tool.  The information from SANGEA is used for API GHG benchmarking studies, climate change industry reporting, and  submissions to federal GHG emission mandatory reporting rules for the petroleum industry.

The new SANGEA integrates two GHG reporting protocols with numerous source types in one software tool.  The table shows the source “modules” available in SANGEA-4.  Under each module, wizards help users set up emission sources and multiple calculation methods without reading the methods in the protocols.  The software guides users to specify source parameters that are needed for GHG emissions calculation and/or reporting requirements.  These source parameters are stored in the software source database for future emission inventory reports.  SANGEA-4 also offers a “User Defined Sources” module under the API Compendium protocol that allows users to define sources that are not already established in the two protocols of the SANGEA reporting system.

EQ Summer 2012_SANGEA

There are many user-friendly editing functions included in SANGEA-4 that allow users to create, delete and edit sources quickly.  The following functions are examples of these user-friendly features:

  • Gas composition property and API gravity calculations
  • Source import and export tools in Excel spreadsheets for several common source types (e.g., combustion sources, O&G well venting sources, tanks, etc.) - this allows users to edit a large number of the same type of sources in Excel spreadsheets then import into SANGEA-4.  Source
    parameters can also be exported to spreadsheets that can be used in other applications such as EPA's MRR reporting tools.
  • For each new reporting year, users can copy from an existing report file - this function copies all source parameters from the existing file and removes all activity data that should be updated for the new reporting year. 

The American Petroleum Institute distributes SANGEA™ free of charge to organizations in the petroleum and other applicable industries.  Ms. Adefemi of API stated that, “The objective of sponsoring SANGEA-4 is to provide a user-friendly reporting tool to the Oil & Gas industry and to encourage consistent reporting of GHG emissions. API sponsors an annual survey on GHG emissions and criteria pollutants. SANGEA-4 will assist the industry in recording and benchmarking consistent and comparable data, and also in analyzing the environmental footprint.”  Many large oil and gas companies have adopted SANGEA for corporate GHG reporting requirements.  To request a copy of this software, visit

SANGEA-4 development is led by T3, a division of Trinity Consultants that implements EH&S information management solutions (EMIS), with commercial software development expertise from the BREEZE software group.  Digital Solutions has over 15 years experience developing custom software and implementing EMIS solutions in myriad industries.  For more information about Digital Solution's capabilities, visit or contact Tiffany Stefanescu at