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Environmental Impact Assessment Case study:
Delimara Thermal Power Station, Malta
Screening level analysis of the 144 MW extension
The first level of screening runs for the capacity extesnion simply increases the baseline
emission by 50%, retaining all other parameters and model inputs unchanged.
The screening scenarios were run again for three years (2008, 2009, 2010)
and several emission scenarios:
- Delimara 450 MW extended generating capcity version only 150 m stack with 112.5 g/s NOx average emissions,
based on the DPS IPPC report and permit;
- Delimara 450 MW base version, but with the actual measure emissions for
one to three years, depending on data availability;
- Delimara 450 MW base version, together with other relevant
emissions such as the second power plant in Marsa, waste incinerator,
Free Harbor and several fuel depots and loading stations,
Malta International Airport, local traffic.
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Screening 2008: Delimara 450 MW, 150 stack, 112.5 g/3 NOx;
Meteorology: AERMET 2008, (extracted from MM5 re-analysis runs for the station: Zejtun)
Resolution: 100m, 8760 hourly runs.
Annual average: 4.30 µg/m3
Hourly maxium: 436µg/m3 3007 instances (0.002 %)
distinct times: 52 (0.59 %); distinct locations: 2315 (10.29 %)
Compliance: (simulated NOx against NO2 standards)
- annual: compliance
- hourly: violations
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Screening 2009: Delimara 450 MW, 150 stack, 112.5 g/3 NOx;
Meteorology: AERMET 2009, (extracted from MM5 re-analysis runs for the station: Zejtun)
Resolution: 100m, 8760 hourly runs.
Annual average: 9.60 µg/m3
Hourly maxium: 372 µg/m3 7,532 instances (0.004 %)
distinct times:1,493 (17.04 %); distinct locations: 378 (1.68%)
Compliance: (simulated NOx against NO2 standards)
- annual: compliance
- hourly: violations
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Screening 2010: Delimara 450 MW, 150 stack, 112.5 g/3 NOx;
Meteorology: AERMET 2010, (extracted from MM5 re-analysis runs for the station: Zejtun)
Resolution: 100m, 8760 hourly runs.
Annual average: 7.69 µg/m3
Hourly maxium: 622.8 µg/m3 7,120 instances (0.004%)
distinct times: 1,408 (16.07%) distinct locations: 454 (2.02%)
Compliance:
- annual: compliance
- hourly: violation
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