Entry Type ID Date Applicable Rating System Primary Credit Inquiry (LIs) Ruling (LIs) Related Addenda/LIs Related Resources Campus Applicable Internationally Applicable Country Applicability Reference Guide (Addenda) Page (Addenda) Location (Addenda) Description of Change (Addenda) "LEED Interpretation" "5186" "2009-02-10" "New Construction, Core and Shell, Schools - New Construction" "WEc2 - Innovative wastewater technologies " "This CIR seeks clarification on what fixtures and systems are covered in WE Credit 2. The credit specifically mentions water closets and urinals as fixtures for conveying building sewage. The subject project is a 35,000 sf office building for dentists and orthodontists. A typical office of this kind uses a water-intensive vacuum system for conveyance of human biological waste in the form of blood, saliva and mucous. A number of the doctors are considering using ""waterless"" vacuum systems that drastically cut the demand for potable water for purposes of conveying human biological waste. We seek guidance on the following: Should the fixtures that comprise a dentists\' vacuum system for wastewater (blackwater) conveyance be considered when calculating WE Credit 2." "The applicant is requesting clarification whether fixtures that comprise a dentists\' vacuum system for wastewater conveyance should be considered in the WEc2 calculations. Water use from dentists\' vacuum systems is considered process water use and is not eligible for consideration under WEc2 and WEc3. Previous CIRs dated 2/21/2007 and 3/9/2004 contain additional clarification regarding process water use. Note: this ruling does not apply to Core and Shell projects. Applicable Internationally. " "None" "None" "X"