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d) a maximum volume equal to 859�� of the treatment volume may be dead storage <br /> 3 to 6 f�et deep <br /> � e) underground dead storage must tie at least 3 feet deep -�o Ccun f a� r�n o{-� a�ee1�n�P�'f' <br /> � the length-to-width ratio of dead storage areas must be 3:1 or greater V cl�ma • <br /> g) dead storage azeas must be"flow-through", i.e., runoff must enter a!one end and <br /> exit at the other <br /> h) if dead storage is provided in multiple sections of underground pipe, the runoff <br /> from each section of pavement must travel through a proportionate length of pipe: <br /> on the attached example, the runoff from=_74% of the pave� area would not be <br /> allowed to flow through only the downstream=17% of underground storage <br /> Miscellaneous con�ideration: <br /> I) if the combi�:ed storage depth (i�., the dead storage depth (treatment) plus the live <br /> storage depth (detention)) in a surface pond is greater than 3 feet,the pond must be <br /> fenced with a 6 foot high perimeter fence. <br />