Rating System

LEED BD+C: New Construction

Rating System Version

v2 - LEED 2.2

Inquiry

Background The Phoenix Sky Harbor International Airport Automated Train is a LEED NC Version 2.2 registered project and consists of an automated electric train which travels on an open, elevated guideway serving three train stations and one maintenance facility. A Parking Toll Plaza Building and parking Kiosks are also part of the project. The Terminal 4 Station, 44th Street Station, Toll Plaza Building, and Parking Kiosks are enclosed, normally occupied and conditioned buildings. The EEL (East Economy Lot) Station is unenclosed, unconditioned, and not normally occupied (similar to a parking garage where people spend little time passing through the building and there is no full time staff assigned). The MSF (Maintenance Facility) will be enclosed, normally occupied, and conditioned, but will be designed and constructed by another team. The design team has elected to approach certification of the project as a campus in accordance with the "LEED-NC Application Guide for Multiple Buildings and On-Campus Building Projects", dated 10/05. Credit Interpretation Request This CIR requests verification that the campus certification approach taken and the LEED Project Boundary defined are appropriate. The automated train project campus will be owned by the PSHIA Airport Authority and operated under a contract to them as a single owner. All of the buildings and infrastructure within the campus will be constructed in approximately the same time frame. The certification option on page 6 of the Guideline "Certifying a group of new buildings as a package where the entire building set will be rated as a package and only one rating received" was identified as the option that best fits this project. Do you concur? The Guideline seems to allow considerable latitude in the definition of the LEED Project Site Boundary as long as it is applied consistently to all credits. The project scope of work includes considerable site development including parking pavement areas and roadways well away from the buildings and guideway. In order to pursue the Non-Roof Heat Island effect credit as mandated by the client, the LEED Project Site Boundary has been defined to include the buildings; immediately adjacent landscaped and pervious pavement areas; and the guideway, but excludes parking pavement and roadway areas which will be part of the construction project. Please verify that the project team has the latitude to define the LEED Project Boundary in this way. Also, please verify that it will be permissible to include the Parking Toll Plaza Building and the Parking Kiosks in the campus with their own project boundaries not contiguous with the campus boundary as shown on the plan. Phase 2 of this project will extend the guideway to other airport terminal buildings with stations similar to that at Terminal 4. While the route of the guideway is known at this time, the design team is reluctant to include this area in the LEED Project Boundary at this time because inclusion of this presently paved area would have a detrimental effect on achieving the Non-Roof Heat Island Effect credit. While it seems obvious that adjustment of the LEED Project Boundary to include the Phase 2 work as a Version 2.2 project will be permissible if the Phase 1 project has not been submitted for certification, will it permitted to add Phase 2 as a Version 2.2 project at a later date, if Phase 1 has already been submitted for certification?