Could somebody tell me which EBOM credits require an Engineer to sign-off on them for LEED online? My customer is wanting to achieve LEED EB certification for a small office building (2100 sq. ft.) and is replacing the HVAC system that is nearly 20 years old. The HVAC contractor is trying to charge more for ENgineering support that I am not sure is required for an EB project (he only has experience with NC). This is my first EB project, as well.