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 5-2 - Walls

Universal Citation: 355 IN Admin Code 5-2

Current through March 20, 2024

Authority: IC 15-16-2-44

Affected: IC 15-16-2

Sec. 2.

(a) The walls of a secondary containment facility shall be:

(1) constructed of earth, steel, concrete (precasted modules or poured), or solid masonry; and

(2) designed to withstand a full hydrostatic head of any discharged liquid and weight load of material used in construction.

(b) Cracks and seams shall be sealed to prevent leakage.

(c) Walls constructed of earth or other permeable materials shall be lined as provided under sections 3 through 7 of this rule.

(d) Earthen walls shall have a horizontal-to-vertical slope consistent with good engineering practice. All interior slopes shall be protected with:

(1) flat road stone or a similar crushed stone material; or

(2) a minimum of six (6) inches of vegetative soils planted and maintained with shallow rooted grasses.

(e) The top of earthen walls shall be no less than two and one-half (2.5) feet wide.

(f) Walls may not exceed six (6) feet in height above interior grade unless provisions are made for:

(1) normal access and necessary emergency access to storage containers, valves, and other equipment; and

(2) safe exit from secondary containment.

(g) Walls constructed of concrete or solid masonry shall rest upon:

(1) a floating base of concrete prepared as in section 4 of this rule; or

(2) suitable concrete footings that extend below the average frost depth. Joints between walls and base shall be made watertight.

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