Air Quality and Road Emission Results for Fort Stewart, Georgia

Kirkham, Randy R. ; Driver, Crystal J. ; Chamness, Mickie A. ; Barfuss, Brad C.

Pacific Northwest National Laboratory (U.S.)

关键词: Forests;    Air Quality;    Monitoring;    Us Epa;    Management;   

DOI  :  10.2172/877086
RP-ID  :  PNNL-14933
RP-ID  :  AC05-76RL01830
RP-ID  :  877086

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Directorate of Public Works Environmental & Natural Resources Division (Fort Stewart /Hunter Army Airfield) contracted with the Pacific Northwest National Laboratory (PNNL) to monitor particulate matter (PM) concentrations on Fort Stewart, Georgia. The purpose of this investigation was to establish a PM sampling network using monitoring equipment typically used in U.S. Environmental Protection Agency (EPA) ''saturation sampling'', to determine air quality on the installation. In this initial study, the emphasis was on training-generated PM, not receptor PM loading. The majority of PM samples were 24-hr filter-based samples with sampling frequency ranging from every other day, to once every six days synchronized with the EPA 6th day national sampling schedule. Eight measurement sites were established and used to determine spatial variability in PM concentrations and evaluate whether fluctuations in PM appear to result from training activities and forest management practices on the installation. Data collected to date indicate the average installation PM2.5 concentration is lower than that of nearby urban Savannah, Georgia. At three sites near the installation perimeter, analyses to segregate PM concentrations by direction of air flow across the installation boundary indicate that air (below 80 ft) leaving the installation contains less PM2.5 than that entering the installation. This is reinforced by the observation that air near the ground is cleaner on average than the air at the top of the canopy.