This study was performed to evaluate the asbestos exposure levels and to calculate excess lifetime cancer risk (ELCR) for the risk assessment of the asbestos fibers released from asbestos-cement slate roofing (ASR) building. Total number of ASR buildings was into 21,267 in Busan, and 82.03 percent of the buildings was residential houses, and 43.61 percent of the buildings was constructed in 1970s. For this study, ten buildings were selected randomly among the ASR buildings. The range of airborne asbestos concentration in the selected ten ASR buildings was from 0.0016 to 0.0067 f/mL, and the concentration around no-admitted ASR buildings was higher than that around admitted buildings. The ELCR based on US EPA IRIS (integrated risk information system) model is within 3.5E-05 ~ 1.5E-04 levels, and the ELCR of no-admitted ASR buildings was higher than 1.0E-04 (one person per million) level that is considered a more aggressive approach to mitigate risk.
These results indicate that the cancer risk from ASR buildings is higher than other buildings, and systematic public management is required for control of no-admitted ASR buildings within near future.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 슬레이트지붕 건축물 조사
  2.2. 공기 중 석면 노출농도 측정
  2.3. 인체 위해성평가
 3. 결과 및 고찰
  3.1. 석면슬레이트 지붕 현황
  3.2. 실내 ․외 공기 중 석면농도
  3.3. 인체 위해성평가
 4. 결 론
 참 고 문 헌

• 정재원(부산광역시보건환경연구원) | Jae-Won Jeong (Busan Metropolitan City Institute of Health and Environment)
• 조순자(부산대학교 미생물학과) | Sunja Cho (Department of Microbiology, Pusan National University)
• 이상준(부산대학교 미생물학과) | Sang-Joon Lee (Department of Microbiology, Pusan National University) Corresponding author
• 박근태(부산대학교 산학협력단) | Geun-Tae Park (Institute for research & industrial cooperation, Pusan National University)