The Vault Maintenance System / VMS Filter Sock allows you to safely pump underground vaults directly into the environment. The VMS filters below regulatory guidelines for TSS and Oil & Grease. TSS Removal: 99.4% Oil & Grease Removal: Non-Detect. The VMS filters out oil, oil sheen, and oil-borne contaminants - as fine as rust. It is configured as a portable, easy-to-use multi-staged filter sock available with a quick connect fitting, and a liquid-tight container. The VMS was originally designed for Southern California Edison to remove oil and rust from their discharge waters when pumping their underground vaults. http://www.adsorb-it.com/