CFR › Title 46 › Part 153 › §153.160846 CFR §153.1608Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)The total NLS residue for each tank is calculated by adding the stripping quantity and the clingage NLS residue.(b)The clingage NLS residue for each tank is calculated using the following formula: