Ill. Admin. Code tit. 41, § 160.230 - Dikes - Material and Construction
a) Dikes shall be constructed of earth, clay,
solid masonry or reinforced concrete not higher than one-half the height of the
tank or tanks enclosed, so constructed as to afford protection from leaks,
spills, or other discharge of product.
b) Earthwork dikes shall be firmly and
compactly built of good earth or clay, from which stones, vegetable matter and
other foreign material have been removed. They shall have a flat section at the
top not less than two and one-half feet wide and a slope of at least 1 to 1
(45°) on both sides.
c) Masonry
or concrete dikes shall have footings below the frost line.
d) It is permissible to cover earthwork dikes
with gravel or stones not larger than 2" in diameter.
e) If a concrete floor covering is provided
for the area enclosed by a concrete dike, a sump shall be provided at some
convenient place, attached to which shall be a pump conforming to NFPA #70
(1984), Chapter 5, so that any accumulation of water or oil may be removed
immediately.
Notes
Amended at 9 Ill. Reg. 10012, effective October 1, 1985
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