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6.2.3.8.(6)
OH1
ObjectiveOH1 Indoor Conditions
Attribution
Application
Application 1: 
Exhaust ventilation systems, in buildings to which Part 6 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 6], that:
  • serve rooms that are accessible only from a storage garage,
  • do not exhaust any contaminants that would adversely affect the air quality in the storage garage, and
  • are designed in accordance with Sentence 6.2.3.9.(3).
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Intent
Intent 1: 
To limit the probability that, when an exhaust system is not operating and under conditions of positive stack effect pressure, airborne contaminants (e.g. exhaust fumes from a parking garage) will enter the building, which could lead to negative effects on the air quality of indoor spaces, which could lead to harm to persons.
Intent 2: 
To exempt certain situations from the application of Sentence 6.2.3.8.(5), where there is little risk of airborne contaminants entering the building.
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