By A M O Mohamed; UAE-Japan Symposium on Sustainable GCC Environment and Water Resources
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Extra resources for Arid land hydrogeology : in search of a solution to a threatened resource
Option 10: Technical feasibility This option covers technological risks linked principally to the stage of development or applicability of technologies selected for decontamination of the canal. Possible ratings are shown in Table 6. Table 5. Possible ratings of options of the temporary environmental criteria for the comparative analysis. 4 Technical and economic criteria Option 11: Follow-up measures in study zone and associated costs This option evaluates the amount of follow-up which will be necessary after completion of decontamination in the study zone.
However, measures can be provided to reduce this effect. With regard to on-site solidification/stabilization, protective measures are included in the design. Furthermore, the treatment work area could be sealed off by preventing water flow from upstream, thereby preventing downstream pollution. Hence, this option cannot be used to discriminate one treatment alternative from the other. Table 6. Possible ratings of options of the technical criteria for the comparative analysis. , cement or geomembrane) Proven technology for similar treatment Proven technology for a different treatment Technology not commercially proven (at pilot or pre-industrial stage) 10 Table 7.
For example, a second rating, for a top-rated option, will have the same weight as a first rating for a second class rated option. Both will be given a second-weight rating. As the maximum number of ratings (class of importance) possible is three, a maximum of five corresponding ranks will be possible, as indicated in Table 8 (Holmes 1971). The class of importance was determined from a perspective of sustainable development. The class of importance assigned to each of the twelve options is shown in Table 9.
Arid land hydrogeology : in search of a solution to a threatened resource by A M O Mohamed; UAE-Japan Symposium on Sustainable GCC Environment and Water Resources