Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 604 - DESIGN, OPERATION, AND MAINTENANCE CRITERIA
Subpart M - STORAGE
Section 604.1315 - Vents
Universal Citation: 35 IL Admin Code ยง 604.1315
Current through Register Vol. 48, No. 38, September 20, 2024
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.
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