Bathrooms and Storage rooms

You will have to comply with either natural ventilation or required exhaust rates regardless of your system type.

While what Andrew says is true, unoccupied storage rooms do not require outdoor air and may not require exhaust depending on whether chemicals, etc. are to be stored in the closet. Also in my experience, even though the exhaust is required in restrooms by ASHRAE 62.1-2007, you normally don't have to include any reference to restroom exhaust in your IEQp1 ventilation calculations. The same spaces that are excluded from VRP calculation requirements are also excluded from 100% outdoor air system tabulations, yes.

Nena, dont forgot that exaust requirements in 62.1-2007 depend on wether it is or isnt an ocupiable space. Look up the definition of occupiable space in the 62.1 definitions section.