This proposed change to Appendix A provides clarifications, with one exception (the Section A2 addition). All the other changes (except the A2addition) are minor, clarifying rather than altering the intended meaning. Currently Appendix A does not indicate whether to apply the infiltration credit, Section 4.1.3, before or after Section A3. In some cases, the order in which Sections A3 and 4.1.3 are applied will affect the final whole-building ventilation rate (in cases where Section 4.1.3 zeros out the whole-building ventilation rate). It seems logical to use the order stated in the proposed change to Section A2.