“…At 85 dBA, the excess risk estimate increases to 6.7%, and at 90 dBA, the excess risk estimate increases substantially to 24.7% [Prince et al, 1997]. In recent years, exposure to high sound levels has been found also to cause adverse effects such as psychological stress [Ohstrom et al, 1988], disruption of job performance [Suter, 1989], and possibly hypertension [Talbot et al, 1990].…”