Table C.2: 2012 Segment Data for Emissions per Gross Throughput and Emissions per Segment Throughput GHG Inventory 2012 Segment Segment Emissions CH4 Throughput Fractions Volumes TCF mol Mass Ratio Volume Ratio Natural CH4/mol TCF Source of Segment (Gg CH4/Gg CH4) (TCF gas/TCF gas) Segment Gg CH4 Gas natural gas Natural Gas Throughput Volumes Es/GP Es/TP Production 2,215.6 0.139 0.833 29.5 EIA, gas withdrawals28 Gathering 404.0 0.025 0.833 29.5 EIA, gross gas and Boosting withdrawals28 Processing 891.2 0.053 0.870 17.5 EIA, Gas Processed29 Transmission 2,071.0 0.116 0.934 25.6 EIA, Dry gas production30 + net gas and Storage imports31 Distribution 1,231.3 0.069 0.934 13.3 Gas delivered to consumers from EIA Form 6,813.1 0.402 1.44% Not additive due to different denominators
Table C.2: 2012 Segment Data for Emissions per Gross Throughput and Emissions per Segment Throughput GHG Inventory 2012 Emissions Segment CH4 Fractions Segment Throughput Volumes Source of Segment Throughput Volumes Mass Ratio (Gg CH4/Gg CH4) Es/GP Volume Ratio (TCF gas/TCF gas) Es/TP Segment Gg CH4 TCF Natural Gas mol CH4/mol natural gas TCF Natural Gas Production 2,215.6 0.139 0.833 29.5 EIA, gas withdrawals28 Gathering and Boosting 404.0 0.025 0.833 29.5 EIA, gross gas withdrawals28 Processing 891.2 0.053 0.870 17.5 EIA, Gas Processed29 Transmission and Storage 2,071.0 0.116 0.934 25.6 EIA, Dry gas production30 + net gas imports31 Distribution 1,231.3 0.069 0.934 13.3 Gas delivered to consumers from EIA Form 6,813.1 0.402 1.44% Not additive due to different denominators