77. (1) No person shall dispose of hazardous waste that is hazardous waste chemical by land disposal unless, before it is land disposed, the waste is treated in accordance with the following rules: 1.  Subject to paragraph 3, the following rules apply in respect of each regulated constituent set out for the waste in Part B of Schedule 2 if the waste is an aqueous waste: i.  If Column 6 of Part B of Schedule 2 sets out one or more treatment codes as the land disposal treatment requirement for that regulated constituent of the waste, A.  the waste must be treated in accordance with Part B of Schedule 2 using the treatment methods set out for those treatment codes in Schedule 7, and B.  the treated waste resulting from each treatment method must meet the treatment standard set out for that method in Schedule 7. ii.  If Column 6 of Part B of Schedule 2 sets out a numerical concentration as the land disposal treatment requirement for that regulated constituent of the waste, the waste must be treated so that, based on an analysis of composite samples, the concentration of the regulated constituent in the treated waste is less than that concentration. iii.  If subparagraphs i and ii both apply, the waste only needs to be treated in accordance with one of those subparagraphs. 2.  Subject to paragraph 3, the following rules apply in respect of each regulated constituent set out for the waste in Part B of Schedule 2 if the waste is a non-aqueous waste: i.  If Column 7 of Part B of Schedule 2 sets out one or more treatment codes as the land disposal treatment requirement for that regulated constituent of the waste, A.  the waste must be treated in accordance with Part B of Schedule 2 using the treatment methods set out for those treatment codes in Schedule 7, and B.  the treated waste resulting from each treatment method must meet the treatment standard set out for that method in Schedule 7. ii.  If Column 7 of Part B of Schedule 2 sets out a numerical concentration as the land disposal treatment requirement for that regulated constituent of the waste, the waste must be treated so that, based on an analysis of grab samples, the concentration of the regulated constituent in the treated waste is less than that concentration. iii.  For the purpose of subparagraph ii, if the numerical concentration set out in Column 7 of Part B of Schedule 2 is expressed as a TCLP concentration, the concentration in the treated waste must be determined using the Toxicity Characteristic Leaching Procedure. iv.  If subparagraphs i and ii both apply, the waste only needs to be treated in accordance with one of those subparagraphs. 3.  If treatment subcategories are set out for the waste in Part B of Schedule 2, paragraphs 1 and 2 apply to the treatment subcategory that most closely describes the waste.  O. Reg. 461/05, s. 15. (2) Dilution may not be used to comply with subparagraph 1 ii or 2 ii of subsection (1).  O. Reg. 461/05, s. 15. (3) Despite subsection (1), a person may dispose of hazardous waste that is hazardous waste chemical by land disposal if the waste has been treated in a manner that the Director has approved in writing as equivalent to the treatment referred to in subsection (1).  O. Reg. 461/05, s. 15. (4) Revoked: O. Reg. 297/17, s. 1.