Specified dispersion models
 7. (1) The Director may give written notice to a person who discharges or causes or permits the discharge of a contaminant from a property stating that the Director is of the opinion that, with respect to discharges of the contaminant from that property, (a) one or more dispersion models specified in the notice would predict concentrations of the contaminant at least as accurately as an approved dispersion model; (b) a combination specified in the notice of two or more dispersion models would predict concentrations of the contaminant at least as accurately as an approved dispersion model; (c) a combination specified in the notice of one or more dispersion models and one or more sampling and measuring techniques would predict concentrations of the contaminant at least as accurately as an approved dispersion model; or (d) one or more approved dispersion models specified in the notice would predict concentrations of the contaminant less accurately than, (i) a dispersion model or combination specified under clause (a), (b) or (c), or (ii) another approved dispersion model.  O. Reg. 419/05, s. 7 (1); O. Reg. 507/09, s. 5 (1). (1.1) A notice given by the Director under subsection (1) may provide that it only applies in respect of the use of an approved dispersion model with one or more types of scenarios required to be considered under section 10, as specified in the notice. O. Reg. 109/18, s. 2. (2) Before the Director gives a person a notice under subsection (1), the Director shall give the person a draft of the notice and an opportunity to make written submissions to the Director during the period that ends 30 days after the draft is given.  O. Reg. 419/05, s. 7 (2). (3) If a notice is given under subsection (1) with respect to discharges of a contaminant from a property, a reference in this Part to an approved dispersion model shall be deemed, with respect to those discharges, (a) to include a dispersion model or combination specified under clause (1) (a), (b) or (c); and (b) not to include a dispersion model that is specified under clause (1) (d).  O. Reg. 419/05, s. 7 (3). (4) Revoked:  O. Reg. 507/09, s. 5 (2). (5) Subsection (3) does not apply to a discharge of a contaminant until, (a) three months after the notice is given under subsection (1), unless clause (b) applies; or (b) one year after the notice is given under subsection (1), if the notice includes a notice under clause (1) (c).  O. Reg. 419/05, s. 7 (5). (6) Subsection (5) does not apply for the purpose of preparing a report to which subsection 22 (1.1) or (1.2), 23 (3), 24 (2), 30 (5) or 33 (6) applies.  O. Reg. 419/05, s. 7 (6); O. Reg. 605/05, s. 2 (1); O. Reg. 507/09, s. 5 (3). (7) Subsection (5) does not apply to a discharge of a contaminant if subsection (3) would have the effect of permitting the discharge.  O. Reg. 419/05, s. 7 (7). (8) If a notice is given to a person under subsection (1) and section 20 does not apply to the person in respect of a contaminant, subsection (3) applies to the person in respect of the contaminant only after section 20 begins to apply to the person in respect of the contaminant.  O. Reg. 419/05, s. 7 (8). (9) Despite subsection (8), if a notice is given to a person under subsection (1) and section 20 does not apply to the person in respect of a contaminant, subsection (3) applies to the person in respect of the contaminant for the purpose of preparing a report to which subsection 22 (1.2), 23 (3), 24 (2), 30 (5) or 33 (6) applies.  O. Reg. 419/05, s. 7 (9); O. Reg. 605/05, s. 2 (2); O. Reg. 507/09, s. 5 (4). (10) If a notice given under subsection (1) is amended by a notice given under section 52, the notice under section 52 takes effect, and subsection (3) begins to apply to the amended notice, (a) three months after the notice is given under section 52, unless clause (b) or (c) applies; (b) one year after the notice is given under section 52, if the amendment adds a statement described in clause (1) (c) to the notice given under subsection (1), unless clause (c) applies; or (c) on the day the notice is given under section 52, if the application of subsection (3) to the amended notice would have the effect of permitting a discharge that would otherwise be prohibited.  O. Reg. 507/09, s. 5 (5). (11) If a notice given under subsection (1) is revoked by a notice given under section 52, the notice under section 52 takes effect, and subsection (3) ceases to apply to discharges of the contaminant, (a) three months after the notice is given under section 52, unless clause (b) applies; or (b) on the day the notice is given under section 52, if the revocation of the notice given under subsection (1) would have the effect of permitting a discharge that would otherwise be prohibited.  O. Reg. 507/09, s. 5 (5). (12) Revoked:  O. Reg. 507/09, s. 5 (5).