On 10th March, the EPA proposed changes to its GHG reporting requirements that the American Public Gas Association have said will affect natural gas distribution operators that currently have to report estimated fugitive emissions of natural gas from distribution piping. Only systems with estimated emissions of methane and CO2 equivalent to 25 000 t or more are currently required to report. Emissions are estimated, rather than measured, based on mileage of mains by material, number of service lines by material, number of underground regulator stations by inlet pressure, and a count of leaking components at gate stations owned by the operator. Current rules require the operator to perform complex and confusing calculations specified in the regulations to convert mileage and counts into CO2 equivalents.
Thoughts on the proposals
The proposed rules would require fewer calculations by reporting operators as EPA would now perform the calculations to convert reported methane in to CO2 equivalents. Operators would only perform calculations to convert standard ft3 into t of methane. Many APGA members have complained about the confusion caused by the current rules and EPA’s unresponsiveness to questions, so APGA members have complained about the confusion caused by the current rules and EPA’s unresponsiveness to questions, so APGA welcomes EPA’s attempts to simplfy the reporting leakage from the system that grossly exceeds reasonable amounts, sometimes exceeding the total unaccounted for gas. These overestimates of distribution system leakage have often been mischaracterised in the press and by congressional analysts. APGA welcomes any effort to make reporting easier and more accurate.
Comments on the above are due to the EPA by 24th April 2014.
Adapted from a press release by Claira Lloyd.
Read the article online at: https://www.hydrocarbonengineering.com/gas-processing/14032014/changes_to_ghg_reporting266/