The 15-volume report summarizes the results of a comprehensive program to quantify methane (CH4) emissions from the U.S. natural gas industry for the base year.

The objective was to determine CH4 emissions from the wellhead and ending downstream at the customer's meter.

The accuracy goal was to determine these emissions within +/-0.5% of natural gas production for a 90% confidence interval.

For the 1992 base year, total CH4 emissions for the U.S. natural gas industry was 314 +/- 105 Bscf...