Currently working on a project that is a large site with an existing building currently on the site. The new LEED building is away from this current building creating a smaller LEED Boundary than that of the entire site. We plan to locate a silt fence around the entire site and not around the LEED Boundary of the building. Is this an acceptable way to maintain the SS Pre-Req. or do we need to have silt fencing encompassing the LEED Boundary as well? Essentially double fencing?