The name is absent

and the relative costs of abatement of SPM across emission sources would determine
the final trading outcome. These have been obtained as follows.

The effect of emissions from various discharge points in the plant on the local
ambient air quality is determined using the Gaussian Plume model. The source-
receptor-pollutant transfer coefficients are computed from the calculated contributions
of each source to the ambient concentrations at each of the 8 receptors in the airshed.
The model was run to obtain the 24-hourly average ground level concentrations of SPM
for the month of December. Information on geographic location and configuration of
various discharge points (stack top diameter, stack height) [see annexure 1],
characteristics of SPM laden gas (velocity, temperature and volumetric flow), and rate
of emission from various discharge points is obtained from the BSP.

The costs of SPM abatement for various sources is obtained from the SPM
abatement cost functions. Engineering cost functions of SPM control are derived from
the plant level data on the financial costs of abatement obtained from the BSP.

6. Results and Discussion

Current total abatement of SPM in BSP from the six sources considered in the
study is 1797.15 tonnes per day (table 2) at an average cost of abatement of Rs. 412 per
ton. The distribution of total SPM abated by these sources is given in annexure 2.
Marginal costs of SPM abatement vary from as low as Rs. 42.1 per kg to Rs. 2486.4 per
kg of SPM abated. Of all the sources of SPM considered in the study, the Sinter plant
has the highest and thermal power plant (TPP) has the lowest abatement cost per kg of
SPM.

Table 2. Quantity and cost of SPM abated under alternative scenarios

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