Environmental Engineering Reference
In-Depth Information
Table 8. Calculation of environmental score values: Project (ii)
Key Environmental Factors:
Score values determined by appraisal management team
Member (i) Member
(ii)
Member
(iii)
Member
(iv)
Member
(v)
Average
Score
1.
Landfill (tons of waste per year)
3.9
3.6
4.2
4.7
4.9
4.3
2.
Emissions and Waste (per unit of product)
7.7
7.0
8.0
8.2
7.8
7.7
3.
Biodegradable / compostable (%)
8.2
7.8
7.7
8.4
8.1
8.0
4.
Hazardous air emissions
7.1
7.0
7.0
6.9
6.8
7.0
5.
Hazardous waste
6.7
7.2
7.2
6.8
6.9
7.0
6.
Toxic pollution
6.8
6.1
5.7
5.9
6.0
6.1
7.
Total energy used
3.3
3.0
3.2
4.0
3.9
3.5
Table 9. The Environmental Score (ES) Index: Project (i)
Environmental key factors
Weighting
(a)
Average Agreed Scores
0 to 10 (b)
(a) x (b)
1.
Landfill (tons of waste per year) 0.8 4.7 3.8
2.
Emissions and Waste (per unit of product) 0.8 8.1 6.5
3.
Biodegradable / compostable (%) 0.8 8.4 6.7
4.
Hazardous air emissions 1.0 7.8 7.8
5.
Hazardous waste 1.0 8.5 8.5
6.
Toxic pollution 1.0 8.9 8.9
7.
Total energy used 0.9 7.3 6.6
The ES Index 48.8 (77%)
The weighting in column (a) represents the senior corporate management's view of the importance of each environmental factor. The agreed
score values in column (b) are specific to the project under review (see Table 7). The ES Index represents the total of the weighted score
values with a maximum possibility (based on the agreed weights in this example) of 63.
Table 10. The Environmental Score (ES) Index: Project (ii)
Key Environmental Factors:
Weighting
(a)
Average Agreed
Scores
0 to 10 (b)
(a) x (b)
1.
Landfill (tons of waste per year)
0.8
4.3
3.4
2.
Emissions and Waste (per unit of product)
0.8
7.7
6.2
3.
Biodegradable / compostable (%)
0.8
8.0
6.4
4.
Hazardous air emissions
1.0
7.0
7.0
5.
Hazardous waste
1.0
7.0
7.0
6.
Toxic pollution
1.0
6.1
6.1
7.
Total energy used
0.9
3.5
3.2
The ES Index
39.3 (62%)
See Table 8, for the average agreed scores used in column (b).
