Indiana Administrative Code
Title 355 - STATE CHEMIST OF THE STATE OF INDIANA
Article 2 - COMMERCIAL FERTILIZERS
Rule 5 - Diked Secondary Containment of Fluid Bulk Fertilizers
Section 5-12 - Drainage from contained areas within dikes; elephant rings instead of a diked containment area
Current through March 20, 2024
Authority: IC 15-16-2-44
Affected: IC 15-16-2
Sec. 12.
(a) Individual storage containers not exceeding three thousand (3,000) gallons may be contained within a secondary storage container (elephant ring) instead of a diked containment area.
(b) Both the primary storage container and the elephant ring shall be fabricated of material compatible with:
(c) The height of the elephant ring wall shall not exceed four (4) feet. The volume contained within the secondary storage walls up to the working height of the elephant ring shall be sufficient to contain a volume equal to the volume contained in the primary storage container plus the volume displaced by any equipment, that is, pumps or meters, placed within the secondary containment vessel up to the safe storage level of the elephant ring, plus a freeboard of six (6) inches, which freeboard is exempted if the containment system is protected from rainfall.
(d) The elephant ring shall be free of leaks and structural defects. The base shall be:
(e) All piping connections to the primary storage container shall be:
Pumps and other fixtures, if located within the elephant ring containment structure, shall be placed on an elevated platform.
(f) Accumulations of liquids shall be drained from the elephant ring over the wall of the container by means of a manually operated pump for use in the blending process or for proper disposal in accordance with all applicable regulations.
(g) Elephant rings shall be maintained as necessary to assure compliance with this rule.