For all stormwater management measures, some literature is available on their design, performance and maintenance; however, practical experience with these measures is often missing, or relates to different climates. The selection of BMPs is empirically based, generally starting with application of source controls (policies) followed up by "structural" BMPs. The selection process starts with establishing the performance goals, listing solution alternatives, eliminating unfeasible measures, ranking the remaining measures with respect to benefit/cost ratios, and finally selecting the most effective combination of BMPs, A recommended treatment train - the first element are SCs, then minimise connected impervious areas, at individual lots - swales, filter strips, infiltration trenches (Roesner and Urbonas, in Maidment). Source control measures should be selected with respect to their ability to meet regulatory requirements, effectiveness of practice to remove pollutants of concern, public acceptance of the practice, ability to implement, institutional constraints and costs. Such a selection process can be aided by ranking the applicable practices.
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