Callaghan and Toth IWMP Report revised

the biopod storages and the infiltration through the porous floor of the detention units, should achieve a
slight reduction in the required detention volume, albeit at the expense of substantially greater design
complexity. The 82 cubic metre volume was then simply apportioned between the two groups of roof
areas, on the basis of contributing roof area as a proportion of total roof area, and then adjusted slightly to
suit the space constraints, resulting in the conceptual arrangement shown in Figure 4 below. This provides
a total of 82 cubic metres, using the ecoAID underground cellular system. Details of this system are
shown in the brochure in Appendix A hereto.




Figure 4:    Conceptual Arrangement Of Detention Volume




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