Rating System

LEED BD+C: New Construction, LEED BD+C: New Construction

Rating System Version

v2 - LEED 2.0, v2 - LEED 2.2

Inquiry

The 12/21/04 Ruling to our WEc1.1 CIR stated the following: "if the project\'s certification submittal demonstrates that the quantity of anticipated rainfall flowing from the site to the Potomac River is equal to 50% of the site\'s irrigation needs, WE Credit 1.1 will be awarded. This is because the net effect of drawing that amount of water from the lagoon is the same as if the rainwater was captured on site." Later, a 4/4/05 Ruling to a WEc1.2 CIR stated: "The approach of designing rainwater storage for a "normal" rainfall year and providing potable water as backup is acceptable as implied by the LEED-NC Reference Guide calculations section." We have two questions based on these Rulings. 1) We have performed calculations that demonstrate that the quantity of anticipated rainfall flowing from the site to the Potomac River is equal to over 100% of the site\'s irrigation needs. Please confirm that we can earn WEc1.2 as well based on extrapolating the 12/21/04 WEc1.1 Ruling. 2) The Government is considering the possible need for a potable water back-up to the lagoon-fed system described in our 12/3/04 WEc1.1 CIR for use in drought conditions. Please confirm that, combined with our lagoon-based compliance path, the provision of a back-up potable water supply will not compromise our ability to earn WEc1.2.