There are 2 options for testing:

1) Testing each room separately

     Advantages

• Can reduce the cost of cleanup if only certain rooms are contaminated

     Disadvantages

• Higher cost of initial testing

2) Testing up to 4 rooms with one test

     Advantages

• Lower cost of initial testing

     Disadvantages

• Can increase the cost of cleanup.  If a test comes back above the limit, there is no way to determine if it's only one room, some of the rooms, or all of the rooms.  Therefore, all rooms on that test are required to be cleaned.