It was confirmed that the extreme value distribution model applies to probability of exceeding more than once a day monthly the facility capacities using data of daily maximum inflow rate for 7 wastewater treatment plant. The result of applying the extreme value model, A, D, E wastewater treatment plant has a problem compared to B, C, F, G wastewater treatment plant. but all the wastewater treatment plant has a problem except C, F wastewater treatment plant based 80% of facility capacity. In conclusion, if you make a standard in statistical aspects probability exceeding more than once a day monthly can be ‘exceed day is less than a few times annually’ or ‘probability of exceeding more than once a day monthly is less than what percent’.

1. 서 론
 2. 연구방법
  2.1 극치분포(Extreme Value Distribution)
  2.2 MLE(Maximum Likelihood Estimation)
  2.3 연구대상 및 데이터 전처리
 3. 결과 및 고찰
  3.1 월별 일최대유입량
  3.2 모델매개변수
  3.3 모델 진단
  3.4 시간에 따른 월 1회 이상 초과 유입확률
 4. 결 론
 References

• 최성현(중앙대학교 토목공학과) | Sunghyun Choi
• 유순유(중앙대학교 토목공학과) | Soonyoo Yoo
• 박태욱(중앙대학교 토목공학과) | Taeuk Park
• 박규홍(중앙대학교 토목공학과) | Kyoohong Park Corresponding author