This project was carried out from Jan 10 2009 to Jan 9 2010, totally 12 months, in which the following works were executed: assistance of administrative and paper work for complaint cases, investigation of complaints, sampling of odor and pollution for complaints, satisfaction surveys, site surveys and secondary surveys, interviews in the neighborhood of complaint sites, 2008 white book for public hazard complaints in Tainan County, data summarization for items audited, and training of auditors. Each of the work items was completed as scheduled. In this project, administrative and paper work of 8,244 complaints were carried out, and assistance was provided to 1,878 cases of auditing (including night auditing and major public hazard cases). In addition, odor detection was carried out at 10 spots for public hazard complaints, all of which complied with applicable standards. 2,825 times of satisfaction survey were carried out, and the results shows 2,363 cases of satisfaction (97.13%) and 78 cases of dissatisfaction (including great dissatisfaction) (2.87%). Among the dissatisfaction (including great dissatisfaction), there were 28 cases of odor complaints (35.9%) accounting for the most, followed by 19 complaints of illegal waste disposal (24.36%). 21 on-site interviews were carried out for repetitive complaints, major pollutions, and cases of dissatisfaction. The cause of dissatisfaction was analyzed to be that the emission of pollutants with lower threshold emitted from public or private facilities may comply with emission criteria, but the odor is still a public nuisance. Another cause is that odor dissipates very quickly, and evidence collection is difficult. Also, the intensity of odor may be different due to the distance between pollution source and those who filed complaints. 2 sessions of auditor training were given at the meeting room of the Environmental Protection Bureau on Mar 18 and Sep 22 2009. Lectures were provided for applicable regulations, auditing practice, sampling process, skills of emergency response, techniques of pollution investigation, and case studies. Also, training session was given on Jun 10 2009 for emergency response of complaints, as well as telephone manners. Through the training given, auditors were improved in terms of better knowledge of regulations and more efficient handling of urgent public hazard complaints.