Vents

Section 604.1315  Vents a)         Finished water storage structures must be vented as follows: 1)         the overflow pipe must not be considered a vent; and 2)         open construction between the sidewall and roof is not permissible. b)         Vents must: 1)         prevent the entrance of surface water and rainwater; 2)         exclude birds and animals; 3)         exclude insects and dust to the extent practicable; 4)         on ground level structures, open downward with the opening at least 24 inches above the roof or sod and be covered with 24 mesh non-corrodible screen; and 5)         on elevated tanks and standpipes: A)        open downward; and B)        be fitted with either four mesh non-corrodible screen, or with finer mesh non-corrodible screen in combination with an automatically resetting pressure-vacuum relief mechanism, as required by the Agency.