Ventilation Quarterly

EPA has prepared a new version of the Subpart FF Reporting Form (Version 4) that must be used to prepare annual reports for reporting year 2017 and subsequent years.  

If you wish to resubmit a Subpart FF report for 2016 or any earlier year, you must use Version 3 of the reporting form. 

Reporting form can be downloaded at: Reporting Form Instructions

Table 4 Instructions

Fill out the table for ventilation monitoring points on a quarterly basis; fill out four rows (quarters) for each monitoring point. Calculation support for Equation FF-1 is not provided because not all equation inputs are collected. Calculation support is provided for Equation FF-2 in Table 10a on tab 10. Calculation support is provided for Equation FF-4 in Table 10b on tab 10.

The table below includes space for 600 rows. If more are needed, please submit a request to the e-GGRT Help Desk at GHGReporting@epa.gov.

Complete the table from top to bottom and left to right without skipping rows. The pick list in the first column links to a previous sheet, to restrict entry to previously entered ventilation monitoring points.

For perspective the entire table width, 33 columns, is presented below. Enlarged views of this table is presented below the perspective view.

The following example shows the first 8 columns:

• Ventilation Monitoring Point that corresponds to centralized monitoring point or individual shaft from previous tab Select from the pick list
• Quarter Select from the pick list
  • Dates where active ventilation of mining operations is taking place (start date and stop date).
    • If there was continuous venting during the quarter, insert the first date of the quarter in the column labeled "Start date" and insert the last date of the quarter in the column labeled "Stop date". If there were interruptions, include as many rows as needed for the ventilation monitoring point/quarter combination.
• Method used for flow rate Select from the pick list
• Quarterly volumetric flow rate used in Eq. FF-1
• Units for parameter V, quarterly volumetric flow rate Select from the pick list

• Length of time that substitute data are used for the quarterly volumetric flow rate used in Eq. FF-1

Click this link to expand

 

The next example shows the next 8 columns:

• Location of each measurement of flow rate used in Eq. FF-1
• Date of each measurement of flow rate used in Eq. FF-1.
  • For CEMS measurements, only include the first date of the quarter.
• Dates when continuous monitoring equipment for the flow rate is not properly functioning, if applicable (start date and stop date).
  • You are required to complete these columns only if you indicated CEMS (method 3 in Column A5) as your measurement method. Insert the first date of the episode in the column labeled "Start date" and insert the last date of the episode in the column labeled "Stop date"; include as many rows as needed for the quarter. If CEMS was not used during the quarter, or if CEMS was functioning properly during the quarter, you are not required to enter any information in these columns.
• Method used for concentration Select from the pick list
• Quarterly CH4 concentration used in Eq. FF-1
• Was Eq. FF-9 required to calculate CH4 concentration Select from the pick list
  • If yes, provide the gaseous organic concentration correction factor, used in Eq. FF-9

Click this link to expand

 

The next example shows the next 7 columns:

• Length of time that substitute data are used for the quarterly CH4 concentration
• Location of each measurement of concentration
  • For CEMS measurements, only include the first date of the quarter.
• Date of each measurement of concentration
• Dates when continuous monitoring equipment for the concentration is not properly functioning, if applicable (start date and stop date).
  • You are required to complete these columns only if you indicated CEMS (method 3 in Column A5) as your measurement method. Insert the first date of the episode in the column labeled "Start date" and insert the last date of the episode in the column labeled "Stop date"; include as many rows as needed for the quarter.
  • If CEMS was not used during the quarter, or if CEMS was functioning properly during the quarter, you are not required to enter any information in these columns.
• Temperature used in Eq. FF-1
• Length of time that substitute data are used for the temperature used in Eq. FF-1

Click this link to expand

 

The final example shows the last 10 columns:

• Absolute Pressure used in Eq. FF-1
• Length of time that substitute data are used for the pressure used in Eq. FF-1
• Whether the quarterly CH4 ventilation flow rates and Quarterly CH4 concentrations were measured on the same dry or wet basis or were measured on a different basis.
• If concentration and flow were measured on a different basis, whether or not a flow meter was used and, if used, whether the flow meter automatically corrected for moisture content.
• Moisture content used in Eq. FF-1 if the volumetric flow rate and CH4 concentration were measured on a different basis and a flow meter did not automatically correct for moisture content.
• Length of time that substitute data are used for the moisture content used in Eq. FF-1
• Moisture correction factor used in Eq. FF–1 (Note: the data is applicable to RY 2013 and later, and is disabled for RY 2011 and 2012)
• Length of time that substitute data are used for the moisture correction factor used in Eq. FF-1 (Note: the data is applicable to RY 2013 and later, and is disabled for RY 2011 and 2012)
• Quarterly CH₄ liberated from ventilation monitoring point
• The file name(s) of the MSHA report used to report quarterly CH4 flow concentration and rates. These file names should be consistent with file(s) load uploaded on the Subpart FF Facility Overview screen.

Click this link to expand