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Has the pressure differential requirement of at least 5 pascals for LEED 2009 EQc5: Indoor and Chemical Source Pollutant Control been eliminated from the requirement of this credit?

Yes, the pressure differential has been eliminated in LEED v4. See LEEDuser's guidance for more info.

Question: 

Has the pressure differential requirement of at least 5 pascals for LEED 2009 EQc5: Indoor and Chemical Source Pollutant Control been eliminated from the requirement of this credit?