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Publication Date: 11/01/2005
Type: Report - status
Title: Summary Report: Mercury Thermostats in Commercial Buildings in King County
Author: Primary Contact, Gail Savina
Abstract: In 2005 the Local Hazardous Waste Management Program in King County conducted a survey to develop estimates of the number of mercury thermostats in King County commercial buildings. A stratified random sample of one percent of commercial buildings was surveyed to collect data on heating controls and other building variables. Statistical tests were done to develop models for estimating the total number of mercury thermostats. The 346 buildings surveys contained 2,433 thermostats; of these, 443 thermostats contained mercury. Based on these data, estimates of the total number of mercury thermostats in King County commercial buildings range from 43,300 to 47,000, and the thermostats would contain an estimated 450 pounds of mercury. The study found that mercury thermostats were prevalent in buildings of all ages and that contractors should be aware of their ubiquity.
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