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Airshed Modeling for EIA of Petrojam Refinery Upgrade, Kingston, Jamaica The Petrojam petroleum refinery located in Kingston, Jamaica, is being upgraded to expand its petroleum refining capacity from 35,000 to 50,000 barrels per day and to convert heavy fuel oil into more valuable light petroleum products. VIRTUAL was assigned the work to complete the section on Air Quality and Impact of Air Pollution for the Environmental Impact Assessment Report Petrojam Refinery Upgrade. VIRTUAL worked for estimation of emissions from flare, various point and fugitive sources including emissions from the storage tanks and decoker units (photo of petroleum refinery courtesy of Petrojam Limited).
 The impact of emission from Petrojam petroleum refinery sources as well as all the sources in the airshed were evaluated by the current version of the AERMOD (Version 5.9) and associated models (AERMET and AERMAP). Predictions of SO2, NO2, TSP and CO concentrations were made for averaging periods of one hour, 24 hours and on annual basis with a complex terrain option. The airshed model domain was 29 km in the east-west and 23 km in north-south directions centred near the mid-point of the property.
One year of meteorological data from the Norman Manley International Airport, the nearest meteorological station to the petroleum refinery plant site was taken into account. Airshed model predictions were made for over 3,000 receptors. The receptors included the intersections of grids with spacings of 1,000 m over the entire domain, 500 m up to 7,000 m from a point within the petroleum refinery plant site; 250 m up to 5,000 m from a point within the petroleum refinery plant site; 100 m up to 3,000 m from a point within the petroleum refinery plant site; fenceline receptors and two-tiered fenceline grids 100 m and 200 m from the fenceline with spacings of 50 and 100 m. Sensitive receptors such as schools, hospitals and health centres were also considered.
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