hordruma/ontario_laws_and_regs huggingface dataset:
Same structure contamination
 9. (1) The following approved dispersion models are the only approved dispersion models that may be used for the purposes of this Part with respect to the contaminant and a point of impingement that is located on the same structure as the source of contaminant: 1. The ASHRAE method of calculation. 2. A dispersion model or combination of dispersion models that, pursuant to subsection 7 (3), is deemed to be included in references in this Part to approved dispersion models, if the notice given under subsection 7 (1) states that the Director is of the opinion that the dispersion model or combination of dispersion models would predict concentrations of the contaminant at least as accurately as the ASHRAE method of calculation. 3. The method of calculation required by the Appendix to Regulation 346, if section 19 applies to discharges of the contaminant.  O. Reg. 516/07, s. 5; O. Reg. 507/09, s. 7. (2) The ASHRAE method of calculation may be used for the purposes of this Part with respect to a contaminant only with respect to a point of impingement that is located on the same structure as the source of contaminant.  O. Reg. 516/07, s. 5.
Requirement for ESDM report before implementation of Schedule 3 standards
 23. (1) A person who discharges or causes or permits discharges of a contaminant into the air shall, before February 1, 2010, prepare a report in accordance with section 26 if, pursuant to subclause 20 (3) (a) (i), section 20 will first apply to those discharges on that date.  O. Reg. 419/05, s. 23 (1). (2) A person who discharges or causes or permits discharges of a contaminant into the air shall, before February 1, 2013, prepare a report in accordance with section 26 if, pursuant to subclause 20 (3) (b) (i), section 20 will first apply to those discharges on that date.  O. Reg. 419/05, s. 23 (2). (2.1) Subsection (2) does not apply to discharges of a contaminant from fuel burning equipment that is used for the sole purpose of providing heating to a building, if, (a) the equipment uses no fuel other than propane or natural gas; and (b) the equipment is the only source of contaminant at the facility that discharges the contaminant into the air.  O. Reg. 507/09, s. 22 (1). (3) If a person is required to prepare a report under this section, section 20 shall be deemed to apply for the purpose of preparing the report.  O. Reg. 419/05, s. 23 (3). (4) If, for the purpose of preparing a report required by this section, a person is required under subsection 10 (2) or 12 (1) to use an approved dispersion model in accordance with the scenario described in paragraph 2 of subsection 10 (1), the person shall also use the model in accordance with the scenario described in paragraph 1 of subsection 10 (1).  O. Reg. 507/09, s. 22 (2).
Incident-specific ESDM report
 24.1 (1) The Director may order a person to prepare a report in accordance with section 26 and to submit the report to the Director not later than a date specified in the order, if the Director has reasonable grounds to believe that a contaminant was discharged from the facility and, as a result of the discharge, the person may have, (a) contravened section 19 or 20; or (b) if sections 19 and 20 do not apply to discharges of the contaminant, caused an adverse effect. O. Reg. 109/18, s. 6. (2) An order made under subsection (1) may, (a) require that the report only be prepared with respect to contaminants and, despite subsection 17 (4), averaging periods specified in the order and need not list all contaminants that are discharged from the property, despite anything to the contrary in section 26; (b) despite sections 6 and 7, require that a dispersion model that, in the opinion of the Director, would predict concentrations of the contaminant at least as accurately as an approved dispersion model, be used as the approved dispersion model for the purposes of preparing the report; (c) despite section 10, require that an approved dispersion model be used in accordance with a scenario that uses actual operating data for the facility during the time at which the discharge referred to in subsection (1) occurred; (d) despite section 11, require that an approved dispersion model be used with an emission rate that is an accurate reflection of the emission rate at the time the discharge referred to in subsection (1) occurred; and (e) require that the approved dispersion model be used with meteorological data approved under paragraph 3 of subsection 13 (1) as an accurate reflection of meteorological and local land use conditions at the time the discharge referred to in subsection (1) occurred. O. Reg. 109/18, s. 6. (3) An order made under subsection (1) may require the person to include the following information in the report: 1. The cause of the discharge referred to in subsection (1), if known, and the circumstances surrounding the discharge. 2. If the cause of the discharge is not known, an assessment of the most likely cause based on the best information available and an explanation of steps that have been taken or will be taken to determine the cause. O. Reg. 109/18, s. 6.
Abatement plan
 29. (1) A person who gives a notice to a provincial officer under subsection 28 (1) or (1.1) in respect of a contaminant shall, not later than 30 days after giving the notice, prepare and submit to a provincial officer a written abatement plan for the contaminant that recommends steps that should be taken to prevent discharges of the contaminant from resulting in a contravention of section 19 or 20 or an adverse effect.  O. Reg. 419/05, s. 29 (1); O. Reg. 605/05, s. 8 (1); O. Reg. 507/09, s. 29. (2) Subsection (1) does not apply if, (a) an abatement plan for the contaminant is already required to be submitted to a provincial officer within the 30-day period referred to in subsection (1); (a.1) an abatement plan for the contaminant has previously been submitted to a provincial officer under subsection (1) and the Director is satisfied that another plan is not necessary; or (b) a plan for the contaminant was submitted to the Ministry before November 30, 2005 and the Director is satisfied that it is not necessary to prepare and submit an abatement plan under subsection (1).  O. Reg. 419/05, s. 29 (2); O. Reg. 605/05, s. 8 (2).