Site Boundary

2 replies [Last post]
Apr 20 2010 Guest Post a Comment

I have a question regarding defining a site boundary for a fairly simple LEED project (one building and one parking lot).  The parking lot is connected to an EXISTING private drive which serves the site and is the only access to the site.  The project property line is the centerline of that private drive.  I've found CIRCredit Interpretation Ruling. Used by design team members experiencing difficulties in the application of a LEED prerequisite or credit to a project. Typically, difficulties arise when specific issues are not directly addressed by LEED information/guide responses that state that if a parking lot or drive is existing, it can be excluded from the boundary.  However, I don't know if it should be included if it's the only drive that serves the property.  Any help or thoughts would be great.  Thanks!

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David Posada Sustainability Manager, SS TAG member GBD Architects
Apr 20 2010
LEEDuser Expert
17568 Thumbs Up

Katie, In case you haven't

Geography:

Katie,
In case you haven't seen it yet, the Minimum Program Requirements (MPR) Supplemental Guidance document provides some help here:

1. The LEED project boundary must include all contiguous land that is associated with and supports normal building operations for the LEED project building, including all land that was or will be disturbed for the purpose of undertaking the LEED project.
2. The LEED project boundary may not include land that is owned by a party other than that which owns the LEED project unless that land is associated with and supports normal building operations for the LEED project building.
See
http://www.usgbc.org/ShowFile.aspx?DocumentID=6473
for this and the exceptions for non-contiguous parcels on page 13.

Project teams have a certain amount of discretion is determining what's included in the LEED site boundary, as long as it's reasonable and meets the MPR guidelines. One key question is what areas are included in the project scope of work and being improved. If the driveway is existing and not being improved, while the parking area is being improved and supports the building operations, the drive could probably be excluded and the parking lot be included. Sometimes a property line is the most logical site boundary, but often it's the project scope of work or area being impacted.
Just be sure to address all credits for all the areas included in the LEED site boundary, such as stormwater, light pollution, heat island effectHeat island effect refers to the absorption of heat by hardscapes, such as dark, nonreflective pavement and buildings, and its radiation to surrounding areas. Other sources may include vehicle exhaust, air-conditioners, and street equipment. Reduced airflow because of tall buildings and narrow streets exacerbate the effect., construction waste, material costs, recycled content, etc.

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Tristan Roberts LEED AP BD+C, Editorial Director – LEEDuser, BuildingGreen, Inc. Apr 21 2010 LEEDuser Moderator

I would only add to David's great summation that LEEDuser has a guidance page and some useful discussion of Minimum Program Requirements here.

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