Calculating the hardscapes that are shaded

Rashid, the reasons for using June 21st are that A) it's the day of peak insolation in the Northern Hemisphere,  and B) picking one date creates a uniform measure for all LEED projects.This credit is more about calculating compliance of permanently installed features, rather than operating in a certian way during a specific performance period, so it doesn't matter whether June 21 falls during your Performance Period.To show compliance you need to use an accurate site plan that is consistent with the plans used for other aspects of your project. Does that answer your last question?

Rashid, the LEED Online credit form does not specify that the plan needs to be approved by a licensed surveyor, although having your landscape architect or professional engineer put their stamp on it would not hurt.According to LEED Online, the following are the requirements for the site plan:1) It was accurate as of the close of the performance period.
2) All non-roof hardscape areas within the LEED project boundary are highlighted.
3) Each portion of hardscape complying with any strategy in this submittal option is clearly marked and labeled.