This document describes the analysis of air monitoring and other data collected from a late summer though fall of 2012 under EPA’s initiative Natural Gas Ambient Air Monitoring Initiative (NGAAMI) to assess potentially elevated levels of air toxics and PM2.5 concentrations around natural gas extraction facilities.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Executive Summary (PDF)(2 pp, 289 K, November 2015)