We have several clients who are implementing LEED v4. While the changes in Fundamental and Enhanced Cx are rather straight forward for the Mechanical systems, the electrical systems Cx seems to be a bit more complicated. We are working with electrical engineers and other providers who are providing a wide range of fees and interpretations for the scope of service included in the 'electrical service and distribution' commissioning. Are you able to provide some calcification regarding the rigor and scope around electrical commissioning services required for LEED v4?