Mich. Admin. Code R. 285.642.8 - Alternative to diking for storage containers

Rule 8.

(1) An individual storage container that has a capacity of less than 3,000 gallons may be contained within an elephant ring instead of a diked containment area.

(2) Both the primary storage container and the elephant ring shall be fabricated of material that is compatible with each other and with the fertilizer that is being stored.

(3) The height of the elephant ring wall shall not be more than 4 feet.

(4) The volume that is contained within the secondary storage walls up to the working height of the elephant ring shall be sufficient to contain 110% of the volume that is contained in the primary storage container plus the volume that is displaced by the footings of any equipment which is placed within the secondary containment vessel.

(5) The elephant ring shall be free of leaks and structural defects. The base shall be protected from corrosion, both from inside and outside, and shall be underlaid with a concrete pad or with 8 inches of compacted gravel beneath 4 inches of compacted sand or clay, or shall be protected as recommended by the manufacturer of the elephant ring.

(6) All piping connections to the primary storage container shall be made over the wall of the elephant ring and shall be adequately supported and braced. Pumps and other fixtures, if located within the elephant ring containment structure, shall be placed on an elevated platform or otherwise protected from water accumulation.

(7) Accumulations of storm water and other material shall be pumped over the wall of the elephant ring and shall be disposed of in accordance with the provisions of R 285.642.10(1).

Notes

Mich. Admin. Code R. 285.642.8

2003 AACS