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Development of an exposure model for diesel locomotive emissions near the Alameda Corridor.

The present investigation is part of a program of study at the Center for Energy and Environmental Research and Services (CEERS) at CSULB to assess the exposure risks of the particulate matter (PM) in the outdoor environment related to the seaport operations and goods movement. An approximation of PM2.5 concentration was obtained for the diesel locomotive emissions near the Alameda corridor railroad using a TSI DustTrak aerosol monitor. Measurements were carried out at different distances from the railroad from -4.6 m to 90 m, where the distance of -4.6 m denotes the distance from the other side of the railroad. For all measurements, local wind speed and direction were obtained using a Young model 85000 2-axis anemometer. The investigations were performed on different days. At each monitoring location, extended measurements were carried out to assess the effects of different locomotives on the local PM concentration. Results indicate between10-15% increase in PM concentration from the passage of the diesel locomotives.