This page provides an overview of the natural gas pneumatic devices source type reporting requirements for Subpart W.

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.

The natural gas pneumatic devices source type is applicable to Onshore petroleum and natural gas production (98.236(a)(2)), Onshore natural gas transmission compression (98.236(a)(4)), Underground natural gas storage (98.236(a)(5)), and Onshore petroleum and natural gas gathering and boosting (98.236(a)(9)) facilities.

Indicate if the facility has the source type via the radio buttons.

If the source type is present you must report the required elements.

If the facility has the source type, then indicate whether missing data procedures were used.

Reporting Requirements

Table B.1 Pneumatic device emissions must be completed if the facility has any pneumatic devices subject to reporting under 98.232.

For each type of pneumatic device at the facility, report:

• Total number of devices [98.236(b)(1)(i)]
• Estimated average number of hours in the calendar year that the devices were used [98.236(b)(2)]
• Total carbon dioxide emissions (mt CO₂) [98.236(b)(3)]
• Total methane emissions (mt CH₄) [98.236(b)(4)]

Facilities in the Onshore petroleum and natural gas production or Onshore petroleum and natural gas gathering and boosting sectors have the option to estimate the total number of each type of device if it is the facility's first or second year of reporting. The following data elements must be reported:

• Whether or not the total number of devices is estimated [98.236(b)(1)(ii))] If yes, then specify:
  • Whether the estimation is for the first or second year of reporting [98.236(b)(1)(ii)(C)]
  • The actual count [98.236(b)(1)(ii)(A)]
  • The estimated count [98.236(b)(1)(ii)(B)]

Table B.2 Missing data procedures used for Pneumatic Device emission calculations is required for the identification of missing data procedures used for pneumatic device emission calculations:

• Type of Pneumatic Device
• Parameters
• Measurement Frequency

• Number of quarters missing data procedures were used [98.236(bb)(1)] (required only if the measurement frequency was quarterly)

• Total number of hours in the year missing data procedure was used [98.3(c)(8)], [98.236(bb)(2)] (required unless the measurement frequency was quarterly, annually, biannually, or N/A)

Table B.2 Missing data procedures used for Pneumatic Device emission calculations

 

Total Emissions

The total emissions roll-up at the top of the sheet reflects the sum of each gas emission reported for the source type. These summations are calculated automatically by the Smart Form and tabulated on the Introduction tab.