ABSTRACT
The purpose of this case study is to demonstrate an application of the methods described and recommended in this book. The population group evaluated in this case study is sampled from the Survey of Activity Patterns of California Residences. The activity patterns recorded in the database have little information about the water uses that occurred during the recorded activities. The water-use characteristics are based on several surveys that are summarized in the Exposure Factors Handbook. Volatile and semi-volatile chemicals present in the water supply are released into the air during virtually all household water uses. The household water uses considered in this case study are: showers, faucets, bathtubs, toilets, dishwashers, clothes washers, and humidifiers. Two types of flow models are used to model the emissions during the household water uses: the plug flow model and the completely mixed flow model.
