90.1-2007 Table G3.1.1A for Additions and Alterations

Do the requirements of Table G3.1.1A Baseline HVAC System Types apply to the whole building or just to the project area for additions and alterations? I am working on a project renovating a large existing sports complex. The existing building area is over 150,000 square feet, but the renovation project area is about 17,000 square feet. Would this fall under System 7/8 or System 3/4? This question is also applied to the heating source. If the existing building uses fossil fuel, but the project area uses 100% electric, would my baseline system fall under the fossil fuel column or electric?