Dear All,

For LEED v4 O&M projects, do we need to establish performance periods for all the credits? Especially for credits which are not required to make any kind of a measurement in order to achieve points. Could you please let me know how to determine for what credits we need to establish a performance period?

I'm working on a couple of O&M project and I need to inform clients ASAP, so I'd highly appreciate any input.

Thanks in advance,