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Secondary Containment Facts
Farming Secondary Containment Facts
- Existing farm fertilizer storage tanks that must dike by January 1, 2007, are those that:
*have a storage tank of 5,000 gallons or more at one location; or
*have more than one storage tank with an aggregate capacity of more than 5,000
gallons at one location; and
*store fertilizer for more than 30 days.
All new farm fertilizer storage tanks over 5,000 gallons that store fertilizer for more than 30 days must have secondary containment.
Plans for secondary containment must meet all applicable zoning regulations, building standards, and fire codes.
Plans for secondary containment must be approved by the Ohio Department of Agriculture.
The storage tank must comply with the following requirements:
*tank must be equipped with a locable liquid level gauging device;
*tank must be secured to prevent floatation;
*tank must have its designated capacity and the identity of its contents stenciled
(4 inches in height) on a visible side of the tank;
*tank must have a lockable shutoff valve.
Appurtenances (plumbing, pumps, valves, gages, fittings, etc.):
*must be in the diked area or have a seperate means of containment;
*all hoses for loading and unloading must have a shut-off valve;
*must be supported to prevent sagging & protected to prevent damage.
All secondary containment shall:
*have 10% more volumetric capacity than the largest storage tank located within
the containment area;
*not have a tank over 15 tall less than four feet from the base of the containment;
*be constructed of material to prevent vertical movement of fertilizer at a rate
not top exceed thirth five hundredths of an inch per day.
Checks and / or inspections are needed:
*weekly for equipment;
*monthly for a visual inspection of the exterior surfaces;
*monthly for all spill equipment;
*yearly using an API 653 checklist for the exterior of the tank;
*once every five years using an API 653 checklist for the interior of the tank.
Records are required:
*weekly for recording the liquid level of each tank with fertilizer in it;
*whenever there is a discharge of fertilizer outside the containment area;
*for all repairs and maintenance work performed on each tank.
