Do recycling rooms need to be negatively pressurized to meet the requirements of Interior Cross-Contamination Prevention in LEED V4 now that recylcing rooms must include the collection of batteries

Dear all, We have mechanically ventilated spaces. For the option 1 we therefore have to comply with the requirement B. interior cross-contamination prevention.

In LEED v2009, if a project has less than 1 annualized FTE occupancy it was not possible to achieve any of the IEQ points.

Is there any ACP available for India?

In this credit, two options are available, Options 1 and 2. Can a project achieve Option 2 only without pursuing Option 1?

Has the pressure differential requirement of at least 5 pascals for LEED v2009 IEQc5 Indoor and Chemical Source Pollutant Control been eliminated from the requirement of this credit?

Do monitoring requirements also apply to spaces which only have exhaust requirements as per ASHRAE 62.1 - 2010 (e.g. toilets)? Thanks in advance!

Is it allowed to install additional door arrest systems or free-swinging closers to the self-closing doors, so that in case the occupant is able to keep the door open for a short period?

Option 1, Enhanced IAQ Strategies, paragraph B states spaces are to be exhausted where hazardous gases or chemicals may be present or used.

Hello, What if a project has small retail stores on the bottom floor, less than 3m long, and the ground outside doesn't belong to the property owner but the municipality (and therefor not possible