Report

PR-312-18209-E03 GHG Reporting Transmission Pipeline Blowdown Data Review and Emission Factor Trends

Abstract

Previous project reports and a white paper provided background and analysis of pipeline blowdown data reported to under under Subpart W of the GHG Reporting Program. Pipeline blowdown data reported for the 2018 calendar year released by EPA in late 2019 were include in a June 2020 version of this white paper. Since data pipeline blowdown data trends are of interest, this white paper updates the June 2020 White Paper (which included EPA data through the 2018 reporting year) to add 2019 data released by EPA in November 2020. Pipeline blowdown emission factors are relatively consistent from year to year based on 2017 through 2019 data.

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