ID Credit for Radon Mitigation system

We recently submitted an Innovation in Design credit for the design and installation of a radon mitigation system at a recently completed project. The submission included the project narrative, system drawings, US EPA radon information as well as post construction air quality testing reports. The ID credit was denied by the reviewer during our first submission. The review comments received were: 1. quantitative performance improvements (comparing a baseline and design case) 2. a comprehensive strategy (more than one product or process). The submitted strategy is not quantified using a baseline and design case. In addition, only those strategies that have significant environmental benefits beyond standard sustainable design practices are applicable to Innovation in Design credits. Has anyone recently successfully submitted for a credit like this? If so, what additional information was provided to satisfy the reviewer?