CFR›Title 40›Chapter I›Part 503›Subpart D ContainsSections 503.30–503.33CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart D—Pathogens and Vector Attraction Reduction Sections 503.30 § 503.30 Scope. 503.31 § 503.31 Special definitions. 503.32 § 503.32 Pathogens. 503.33 § 503.33 Vector attraction reduction. Previous C Subpart C—Surface Disposal Next E Subpart E—Incineration