Industrial Stormwater Permit Guide

Your link to federal and state compliance resources

Storage Tanks: Stormwater Compliance Photo Comparison

Compliant Condition

Above Ground Storage Tanks With Proper Secondary Containment
These two photographs of above ground tank systems are example of proper secondary containment. Storage tanks can leak their contents and therefore secondary containment to capture and control and leaking material, is provided. In addition, the stormwater that comes in contact with the surface of the equipment, including dispensing nozzles, etc. can be captured and treated on or off-site.

Compliant Storage Tanks

Compliant Storage Tanks

Photos courtesy of Tetra Tech, Inc.

Non-Compliant Condition

Compliant Storage Tanks
Above Ground Storage Tank - No Secondary Containment
Although the tank in this photo was originally a mobile tank on a trailer, the owner has added various pumps and there is evidence that the tanker is now being used as an above ground storage tank and dispensing system. These tanks can leak their contents and therefore secondary containment to capture and control the material should be provided. In addition, stormwater comes in contact with the surface of the equipment, including dispensing nozzles, etc. that are contaminated with the contents of the tank. This contaminated stormwater should be contained so that it does not enter the environment prior to being treated on or off-site.

Photo courtesy of Tetra Tech, Inc.