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9.13.4.7.(2)
OH1
ObjectiveOH1 Indoor Conditions
Attribution
Application
Application 1: 
Sealing of penetrations of interior floors that are in contact with the ground, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Exceptions: 
except as stated in Sentence 9.13.4.1.(2), which applies to the control of the infiltration of soil gas in:
  • floors in garages, and
  • buildings located where soil gas is at a sufficiently low concentration as to not constitute a hazard.
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Intent
Intent 1: 
To limit the probability of the infiltration of soil gas, which could lead to negative effects on the air quality of indoor spaces, which could lead to harm to persons.
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