We are still in the brainstorming stage on what we should use to contain spill of Fresh Acid and Spent Acid (sulfuric acid, conc. 91%). The existing primary containment is a steel tank and the existing secondary containment is a concrete curb or wall. We got cited for not enough secondary containment volume so our job now is to increase the secondary contaiment. We already identified concrete wall/floor type as the secondary containment. Anybody has any idea of other options to use as a secondary containment, for example direct leak to an underground reservoir and pump it back to another good tank, etc?
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