2.1 Any domestic premises, hotel, hostel,
hospital, clinic, nursery, temporary housing accommodation, school,
educational institution, office, factory, shop, shopping centre, place
of public worship, library, court of law, sports stadium or performing
arts centre shall be considered to be a sensitive receiver.
2.2 Any other premises or place with which,
in terms of duration or number of people affected, has a similar sensitivity
to the air pollutants as the aforelisted premises and places shall also
be considered to be a sensitive receiver.
The air quality assessment shall take
into consideration the following aspects:
3.1 Identification of Emission Characteristics
It involves the identification of emission
characteristics for major sources (including new source(s) proposed
in the EIA study, if any) within the study area including, but not limited
to, the following elements:
- emission rates, exit velocity and
exit temperature as a function of load, time and air pollutants emitted
for maximum, average and nominal operating/design conditions;
- location, height of emission, grade
level above mean sea level and physical dimensions of emission points,
areas, volumes and lines;
- anticipated growth changes over the
time horizon of the EIA study.
3.2 Description of Study Area
The study area for assessing air quality
impact may vary from case to case and the EIA study brief may prescribe
the study area. It involves the description of the topographical and
man-made features which may affect the dispersion characteristics of
air pollutants within the study area. This includes terrain height,
locations and dimensions of physical obstruction, existing and potential
land use, existing and potential building downwash, building wake, street
canyon or cavity effects within the study area.
3.3 Description of Sensitive Receivers
It involves the description of locations,
height, grade level, dimension of sensitive receivers and impact area.
3.4 Baseline Study
It involves the description of the existing
air quality based on, but not limited to, existing air quality monitoring
on-site or quality assured measured data which can be obtained from
government agencies, companies or instructions. The baseline study involves
a discussion of background air quality value due to uninventoried sources
and contributions from outside the study area and description of the
method used for determining this value.
3.5 Meteorological Conditions
Assessment shall use the recent representative
sequential hourly meteorological data obtained from on-site observation,
government agencies, companies or institutions. It also involves a discussion
of meteorological variations due to difference between the monitoring
site and the study area as well as within the study area. Meteorological
conditions due to topographic / land use influences shall be identified
and discussed.
3.6 Impact Prediction and Assessment
- Assessment results shall provide information
on the worst case meteorology; areas of maximum impacts in the study
area and cumulative impacts due to background and identified sources.
- Presentation of assessment results
shall be assisted by summary tables and contour map of pollutant concentration.
- Assessment results shall be compared
with acceptable air quality standards as defined according to Annex
4.
