A report on the first part of this investigation of the possibilities of natural ventilation in small utility buildings was presented in 1982. During that investigation it became clear that it was necessary to gather information regarding air-leaks from inside walls and inside doors. This information is required in order to be able to determine the magnitude of the mutual influence of the ventilation in one room on the ventilation in other rooms.

The causative agent of Legionnaires' disease is the bacterium Legionella pneumophila (Lp). This organism is just one species of the genus Legionel/a. To date more than 36 species of Legionella have been isolated and these are being further divided into serogroups and subgroups. Approximately 90% of cases of Legionnaires' disease have been associated with· Lp serogroup 1, subgroup Pontiac. However about half of the known species of Legionel/a have caused serious disease and several fatalities in man.

A renewed interest in energy conservation has spaumed a revival of community-based energy management projects throughout the United States and Canada.