It has always been my understanding, underscored by the LEEDuser LEED EBOM reference above in the Birdseye narrative, that an NC project could achieve an ID credit by complying with an EBOM credit. We have done so in the past by complying with the MR4 EBOM credit for low mercury lamps.

The compliance threshold used to be 90 picograms of mercury per mean lumen hour. Then it was lowered to 70 picograms to reflect v4 thresholds. Now when I look at the Innovation catalog for my LEED 2009 project, it says that to get an ID credit via EBOM MR4 we would have to not just comply but meet the Exemplary Performance level of 35 picograms per mean lumen hour.

It seems unreasonable to me to require not only compliance but Exemplary Performance compliance with a LEED v4 credit for my LEED 2009 project. And it breaks with the rationale that the project is achieving an ID credit for complying with a credit borrowed from another system. Is it now the case that a project needs to reach an Exemplary Performance threshold of a borrowed LEED v4 credit to achieve 1 ID pt? If true, when did that happen? If only true of EBOM MR4, why? Can anyone explain this?