D.C. Mun. Regs. tit. 20, § 723
723.1 Consumer products wherein the label, packaging, or accompanying literature specifically states that the product should be diluted with water or non-VOC solvent before use shall comply with the following:
(a) Limits specified in the Table of Standards in § 720.1 shall apply to the product only after the minimum recommended dilution has taken place; and
(b) Minimum recommended dilution shall not include recommendations for incidental use of a concentrated product to deal with limited special applications such as hard-to-remove soils or stains.
723.2 Consumer products wherein the label, packaging, or accompanying literature states that the product should be diluted with any VOC solvent prior to use, shall comply with the limits specified in the Table of Standards in § 720.1, only after the maximum recommended dilution has taken place.
SOURCE: Final Rulemaking published at 51 DCR 3879 (April 16, 2004); as amended by Final Rulemaking published at 51 DCR 10781 (November 26, 2004); as amended by Notice of Final Rulemaking published at 58 DCR 11286, 11312 (December 30, 2011).