This project focuses on the industrial process inspections and unannounced smokestack flue gas investigations for polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), heavy metals (Pb, Cd, and Hg), fine particulate matters (PM2.5), chromium and hexavalent chrome, particulates-sulfur oxidants-nitrogen oxidants (PSN), and non-methane hydrogen carbon (NMHC); fuel samples were also collected and analyzed for sulfur contents from the stationary sources in Kaohsiung City. The ambient air, in an air quality monitoring station were also collected and analyzed for PCDD/Fs, polychlorinated biphenyls (PCBs), and 19 heavy metals. The approaches of this project in 2014 and 2015 are described as follows. 1. This project has inspected 170 industrial processes and their smokestacks. Most of the factories were corresponded to the regulated standards of operation conditions recorded in the operation permit. However, some factories still had violated the regulated standards which are inquired to modify/improve and will be checked again in the following period. We will continuously ask the improvement industrial processes. 2. There were 50 stationary sources unannounced investigated for PCDD/Fs emissions in 2014 and 2015. The PCDD/Fs concentrations ranged between 0.001 (Wastewater incineration) and 3.02 (dichloroethane processing) ng I-TEQ/Nm3. Two of the 50 station sources were found to violate the PCDD/Fs emission regulation of Taiwan EPA. One is the steam generation boiler (fueled by woodchip) with the mean total PCDD/F concentration 1.59 ng I-TEQ/Nm3 in the smokestack flue gas; the other one is dichloroethane processing with the mean total PCDD/F concentration 3.02 ng I-TEQ/Nm3 in the smokestack flue gas. The respective PCDD/F emission regulations are 0.5 and 1.0 ng I-TEQ/Nm3. The reasons why they were violated the PCDD/Fs emission regulation is described in section 3.2.7 of this report. 3. The emission sources of heavy metals (Pb, Cd, and Hg) were detected from the smokestacks, including 9 MSWIs, 17 IWIs, 1 MWIs, 1 CFB, 1 WFBs. All the detected sources are within the regulated values. 4. Four times ambient air monitoring were scheduled for analyzing PCDD/Fs and PCBs, and twice was for analyzing 19 heavy metals in the Nanzi ambient air monitoring station. In 2015, results show the highest PCDD/F I-TEQ concentrations in February (0.1338 pg I-TEQ/Nm3). In 2014, results show the lowest PCDD/F I-TEQ concentrations in September (0.0246 pg I-TEQ/Nm3). Possible contribute sources had described in section 5.1.2. 5. Four factories of the station sources were arranged for PCDD/Fs and PSN emission reduction consults owing to the violations of the PCDD/Fs emission requirements. The control strategies of PCDD/Fs were suggested. 6. Ten of the PM2.5 samples from the smokestack flue gases were collected and analyzed. The concentrations of filterable particulate matter for those size < 2.5 μm ranged between 0.062 and 26.5 mg/Nm3. The lowest FPM concentration was found in the crematorium, while highest concentration was found in a liquid waste incinerator. 7. There were 34 PSN, 30 NMHC, 5 chromium and hexavalent chrome collected from the smokestack flue gases and 61 fuels were analyzed for sulfur contents. Five of the 34 station sources were found to violate the PSN emission regulation of Taiwan EPA. There were one of the 61 station sources were found to violate the fuels regulation of Taiwan EPA.

Dioxins, heavy metals (Pb, Cd, and Hg), fine particulate matters, inspection