| Summary: | Bus station is an important part of city transportation system to meet the
demand of people and goods mobilization. Besides controlling, monitoring,
arranging, and operating of the traffic, facilitating human and goods
transportation, it produces emission of air pollutants too.
Bus station operational that never stops in 24 hours a day throughout the
year potentially results emission production that can lead air pollution in the bus
station and the surrounding, which will affect public health. Gas emission that
needs concern as a result of the concentrated vehicles at the bus station is SO2.
This study aims to find out the approximated ambient air quality of SO2
affected by bus activities, to determine the factors affected ambient air quality,
and to propose the alternative SO2 emission controlling scenarios at Giwangan
Bus station.
This study was conducted by measuring the rate of SO2 emission from
buses exhaust gas and ambient air distribution of SO2. The emission rate models
used are emission quality, and SO2 gas distribution model in the ambient air is
Box Model. The impact on the environmental quality of air is measured by
comparing the value of SO2 ISPU to previous year period.
The study results showed that ambient air quality of SO2 at Giwangan bus
station at specific condition, especially low/tranquil wind velocity, caused by
buses activities are categorized in �moderate� quality. Inter-province economic
class bus is the major source of emission because it is a bus type with the
highest SO2 emission. To minimize the ambient air quality degradation the buses
that currently operate at Giwangan Bus station, especially the type of AP, AKDP,
and AKAP_E already need renewal or/and change wont of turned on the bus in
queue called as \"ngetem\" maximally 7 minutes while the bus wait for passengers.
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