Local Distribution Companies

Please see Reporting Form Instructions on downloading the blank reporting form and uploading the completed reporting form.
You may also refer to Optional Calculation Spreadsheet Instructions to download the Subpart W calculation spreadsheet.

This page provides an overview of the Subpart W local distribution companies source category reporting requirements.

The local distribution companies source category is applicable to Natural Gas Distribution segment.

If the facility has the source type, the Best Available Monitoring Methods and Missing Data table must be completed.
Reporting Requirements

Note: If you do not have a specific type of metering-regulating station, transmission-distribution station, distribution main, or distribution service, enter zero for the applicable data element(s), do not leave the fields blank.

The facility is required to report:

  • Total number of above grade T--D transfer stations in the facility (98.236(c)(16)(i))
  • Number of years over which all T--D transfer stations will be monitored at least once (98.236(c)(16)(ii))
  • Number of T--D stations monitored in calendar year (98.236(c)(16)(iii))
  • Total number of below grade T--D transfer stations in the facility (98.236(c)(16)(iv))
  • Total number of above grade metering-regulating stations (this count will include above grade T--D transfer stations) in the facility (98.236(c)(16)(v))
  • Total number of below grade metering-regulating stations (this count will include below grade T--D transfer stations) in the facility (98.236(c)(16)(vi))
  • Annual CO2 emissions from all above grade T--D transfer stations combined (98.236(c)(16)(xvii))
  • Annual CH4 emissions from all above grade T--D transfer stations combined (98.236(c)(16)(xvii))
  • Annual CO2 emissions from all below grade T--D transfer stations combined (98.236(c)(16)(xviii)
  • Annual CH4 emissions from all below grade T--D transfer stations combined (98.236(c)(16)(xviii))
  • Annual CO2 emissions from all above grade metering-regulating stations (including T--D transfer stations) combined (98.236(c)(16)(xix))
  • Annual CH4 emissions from all above grade metering-regulating stations (including T--D transfer stations) combined (98.236(c)(16)(xix))
  • Annual CO2 emissions from all below grade metering-regulating stations (including T--D transfer stations) combined (98.236(c)(16)(xx))
  • Annual CH4 emissions from all below grade metering-regulating stations (including T--D transfer stations) combined (98.236(c)(16)(xx))
  • Annual CO2 emissions from all distribution mains combined (98.236(c)(16)(xxi))
  • Annual CH4 emissions from all distribution mains combined (98.236(c)(16)(xxi))
  • Annual CO2 emissions from all distribution services combined (98.236(c)(16)(xxii))
  • Annual CH4 emissions from all distribution services combined (98.236(c)(16)(xxii))
  • Leak factor for meter/regulator run developed in Equation W-32 of 98.233 (98.236(c)(16)(viii))
  • Number of miles of unprotected steel distribution mains (98.236(c)(16)(ix))
  • Number of miles of protected steel distribution mains (98.236)(c)(16)(x))
  • Number of miles of plastic distribution mains (98.236(c)(16)(xi))
  • Number of miles of cast iron distribution mains (98.236(c)(16)(xii))
  • Number of unprotected steel distribution services (98.236(c)(16)(xiii))
  • Number of protected steel distribution services (98.236(c)(16)(xiv))
  • Number of plastic distribution services (98.236(c)(16)(xv))
  • Number of copper distribution services (98.236(c)(16)(xvi))

 

The emissions under 98.236(c)(xvii) and (xviii), above and below grade T-D stations are also reported under 98.236(c)(16)(xix) and (xx), above and below grade metering-regulating stations. To prevent double counting of these emissions the reporting system does not include T-D transfer stations in the source total. This has caused confusion but it is specifically required under 98.236(c)(16)(xix).

 

Total Emissions

The total emissions roll-up at the top of the sheet reflects the sum of the CO2 equivalents of each gas emission reported for the source type.  These summations are reflected and aggregated on the Introduction tab.

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