WPC 2 ZB 0X`\  PQPЫ`\  PQP)\  ` TmsRmn 10pt (F)Xw P7XP* `(CG Times (Scalable)X`\  PQP)\  ` TmsRmn 10pt (F)23|`@1-@  #Xw P7XP# l 1. SUMMARY AND CONCLUSIONS ă 1.1. MAJOR CONCLUSIONS Based on the weight of the available scientific evidence, the U.S. Environmental Protection Agency (EPA) has concluded that the widespread exposure to environmental tobacco smoke (ETS) in the United States presents a serious and substantial public health impact. Xp` hp x (#%'0*,.8135@8: