Alternative 4 | Alternative 3 | Alternative 2 | Alternative 1 | Score | |||||
Irrigation | Evaporation ponds | Deep well injection | Pump to seawater | Weight | Criteria | ||||
PTS | Rating | PTS | Rating | PTS | Rating | PTS | Rating | 1, 2, 3 | |
Economic (30%) | |||||||||
5.0 | 2.1 | 5.5 | 2.3 | 5.0 | 2.1 | 10.6 | 4.4 | 2.4 | Construction cost |
4.1 | 1.8 | 7.6 | 3.3 | 5.1 | 2.2 | 8.7 | 3.8 | 2.3 | O&M |
9.2 | 13.1 | 10.1 | 19.3 | 4.7 | Subtotal | ||||
23.5 | Maximum points estimated % | ||||||||
11.7 | 16.7 | 12.9 | 24.6 | Percentages % | |||||
Environmental (35%) | |||||||||
7.8 | 2.7 | 9.3 | 3.2 | 8.4 | 2.9 | 7.5 | 2.6 | 2.9 | Pollution impact |
3.8 | 1.8 | 6.3 | 3.0 | 3.4 | 1.6 | 7.6 | 3.6 | 2.1 | Sustainability |
11.6 | 15.6 | 11.8 | 15.1 | 5.0 | Subtotal | ||||
25.0 | Maximum points estimated | ||||||||
16.3 | 21.8 | 16.5 | 21.1 | Percentages % | |||||
Technical (20%) | |||||||||
2.9 | 1.9 | 4.2 | 2.8 | 2.6 | 1.7 | 7.1 | 4.7 | 1.5 | Time of construction |
5.3 | 2.3 | 4.6 | 2.0 | 4.8 | 2.1 | 9.9 | 4.3 | 2.3 | Future expansion |
6.4 | 3.2 | 6.2 | 3.1 | 4.4 | 2.2 | 9.0 | 4.5 | 2.0 | Easy of construction |
5.3 | 2.1 | 7.3 | 2.9 | 5.3 | 2.1 | 12.0 | 4.8 | 2.5 | Easy of O&M |
7.8 | 2.8 | 5.6 | 2.0 | 6.4 | 2.3 | 8.1 | 2.9 | 2.8 | Risk |
27.6 | 27.9 | 23.5 | 46.1 | 11.1 | Subtotal | ||||
55.5 | Maximum points estimated | ||||||||
10.0 | 10.0 | 8.5 | 16.6 | Percentages % | |||||
Political social (15%) | |||||||||
5.6 | 3.5 | 4.5 | 2.8 | 5.4 | 3.4 | 4.3 | 2.7 | 1.6 | Political constraints |
7.5 | 3.4 | 4.2 | 1.9 | 7.7 | 3.5 | 6.2 | 2.8 | 2.2 | Social impact |
4.7 | 2.6 | 3.8 | 2.1 | 4.0 | 2.2 | 6.1 | 3.4 | 1.8 | Water price acceptance |
7.3 | 3.3 | 6.2 | 2.8 | 6.8 | 3.1 | 5.3 | 2.4 | 2.2 | Legal requirements |
25.0 | 18.6 | 23.9 | 21.9 | 7.8 | Subtotal | ||||
39.0 | Maximum points estimated | ||||||||
9.6 | 7.2 | 9.2 | 8.4 | Percentages % | |||||
47.6% | 55.7% | 47.0% | 70.8% | Total % |