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9.33.4.7.(1)
OH1OS3
ObjectiveOH1 Indoor Conditions
Attribution
Application
Application 1: 
Heating and air-conditioning systems serving garages that are part of a single dwelling unit, and systems serving other occupied parts of a single dwelling unit but located in or running through a garage, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability that contaminants that may be present in the garage will migrate from the garage into the dwelling unit, which could lead to the accumulation of such contaminants to levels that could pose a risk to human health from long-term exposure, which could lead to harm to persons.
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