The evaluation procedure up to this point has resulted in potential sites being identified for a particular treatment alternative and then field investigations being conducted to obtain data for the feasibility determination. The evaluation of the field data will indicate whether or not the site requirements listed in Table 2.1 and Table 2.2 exist. If site conditions are favorable, it can be concluded that the site is apparently feasible for the intended concept. If only one site and related treatment concept result from this screening process, then the focus can shift to final design and possibly additional detailed field tests to support or refine the design. If more than one site for a particular concept or more than one concept remain technically feasible after the screening process, it will be necessary to conduct a preliminary cost analysis to identify the most cost-effective alternative. The criteria in Chapters 4 through 10 should be used for a preliminary design of the concept in question. The planning-level equations in this chapter should not be used for preliminary or final design. Cost-effectiveness should be determined from a detailed cost estimate of all the elements of the treatment system including pumping, preapplication treatment, storage, land, and final disposition of the treated water. In many cases, the final selection will also be influenced by non-financial factors, such as the social and institutional acceptability of the proposed site and concept to be developed on it.
Was this article helpful?