HPD 2.1.1 Standard

About HPD Open Standard v2.1.1

HPD Open Standard v2.1.1 was released on July 2, 2018, and became “Effective” in the HPD Builder in December 2018. HPD v2.1.1 was replaced by HPD v2.2 as the “Effective” version of the HPD Open Standard on May 18, 2020. 

The HPD v2.1.1 added new pathways to clarify how they should report on products with “Special Conditions”—situations where the already-defined HPD methods cannot be applied. Also included were updates to strengthen the consistency of Hazard Screening Methods.

Key Features of the HPD v2.1.1 Standard

Special Conditions. Materials or substances may be considered within the HPD Open Standard to be “Special Conditions” for several reasons, among which are these examples:

• • A content inventory cannot be created due to variable or unknown composition and lack of CAS Registry Numbers, or CASRNs. This can occur, for example, with some biological materials, geological materials, or mixed recycled content.
  • A content inventory can be created, in theory, using regular HPD methods, but it is judged not practical or feasible to do so. For example, when electronics are a minor component of a building product, if the added value to building project decision-makers of having a regular inventory reported for the electronic component is seen to be low, using a Special Condition has been approved by the Technical Committee. This is a determination that is made by the HPDC Technical Committee, not a determination to be made by an individual preparer of an HPD.

HPD Open Standard v2.1.1 rigorously defines, using Emerging Best Practices guidance, when Special Conditions apply to selected materials and substances, and how manufacturers can characterize a Special Condition in a completed HPD. Importantly, HPDs developed using HPD-defined Special Conditions will be able to qualify for the key LEED v4 credit, “Building products disclosure and optimization: Material ingredients,” Option 1.  Currently, HPDC has released Special Conditions guidance for four situations: biological materials, geological materials, mixed recycled content, and electronics. Our volunteer committees and additional guest experts are working on additional Special Conditions, including polymers and metal alloys, and are poised to release new guidance as it is completed.  Note that Special Conditions cannot be applied to a material or substance in an HPD until guidance is posted in Emerging Best Practices for that material or substance.

Hazard Screening Methods in HPD v2.1.1.  The HPD v2.1.1 release also addresses potential inconsistencies in hazard screening results of HPDs created using different automated hazard screening tools. HPD Collaborative worked with Clean Production Action and its GreenScreen® List Translator™ automators to develop the “Harmonized Methods for Hazard Screening” in HPD v2.1.1, now included in Emerging Best Practices guidance. This harmonized method addresses the frequency of updating and methods for handling chemical groups in lists used in GreenScreen List Translator and HPD Hazard Warning listings. In addition, HPD v2.1.1 now provides more details on other aspects of hazard screening such as criteria for selecting HPD Priority Hazard Lists, definitions of hazard screening terms, and specific requirements for hazard screening for HPDs.

Consistent with HPD v2.1 in Other Areas.  HPD v2.1.1 continues to offer all previous improvements made in the v2.1 release of the HPD Open Standard in 2017. Key features include full harmonization with LEED v4 credit requirements, and integration of a LEED “pre-check” indicator. The latter enables project teams to rapidly identify, for further review, products that have the basic requirements to be compliant with the LEED v4 Material Ingredient and Disclosure credit.