This project is part of the NETL In-House R&D Ambient Air Quality Research Program. As part of the overall DOE-FE air quality sampling and analysis activities, NETL's Office of Science & Technology (OST) has initiated an in-house ambient monitoring program that builds upon the Center's core capabilities and competencies in inorganic and organic analyses and instrumentation. The program has culminated with the establishment of a fine particulate/air toxics sampling station at the Center's research laboratory in Pittsburgh. This air monitoring station consists of a new 715 ft² indoor facility housing equipment to monitor continuously gaseous pollutants O₃, SO₂, NH₃, NO_y, NOx, CO, H₂S, and peroxide, and PM2.5 particulates containing carbon and polyaromatic hydrocarbons. In addition, a fully-instrumented, fourteen bay rack has been constructed to support a variety of ambient monitoring equipment. OST will also collaborate with Consol and the Allegheny (PA) County Health Department in evaluating the performance of PM2.5 FRM samplers. The NETL sampling station will use an existing 10-meter meteorological tower that has been collecting weather-related data for the past seven years. Two in-house laboratories have been completely renovated to support the analysis of PM2.5/air toxics samples, including the installation of a Kratos MS50 high-resolution mass spectrometer for the detailed characterization of organic compounds.