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  1. willcoll100

    Iniltration chamber bed outflow

    I have modeled a roof runoff infiltration chamber bed in HydroCad, which had a primary (6" pvc) outflow of 0.25 cfs for a 25 yr. event, and a 0.36 cfs for the 100 yr. The 25 yr. total for the site was 0.03 cfs higher than pre development and the reviewing engineer wants it the same or less to...

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