| 215 | Post-treatment dust collector new diaphragm valve installation work | Iljin Steel Co., Ltd. | Iljin Steel Co., Ltd. | 2022.11 |
| 214 | Borax dust collector duct repair and cleaning work | Iljin Steel Co., Ltd. | Iljin Steel Co., Ltd. | 2022.11 |
| 213 | Gunsan wastewater treatment plant separation membrane replacement and cleaning work | Gunsan City Waterworks Office | Gunsan Wastewater Treatment Plant | 2022.11 |
| 212 | Improvement of the filtration dust collector environment (4set) | Korea Glass Industry Co., Ltd. | Korea Glass Industry Co., Ltd. | 2022.10 |
| 211 | Atmosphere prevention facility installation work | Mido Co., Ltd. | Mido Co., Ltd. | 2022.10 |
| 210 | Waste change permit service | Bogwang Industry Co., Ltd. | Bogwang Industry Co., Ltd. | 2022.09 |
| 209 | RTO duct installation work/canvas replacement work | Iljin Steel Co., Ltd. | Iljin Steel Co., Ltd. | 2022.09 |
| 208 | Gochang FCW 2nd factory dust collection duct piping extension installation work | Hyundai General Metal Co., Ltd. | Hyundai Metal Co., Ltd. Gochang Factory | 2022.09 |
| 207 | Pickling scrubber replacement and cleaning | SM Steel Co., Ltd. | SM Steel Co., Ltd. | 2022.09 |
| 206 | Filter dust collector environmental improvement/large dust collector, cleaning dust collector maintenance | Korea Glass Industry Co., Ltd. | Korea Glass Industry Co., Ltd. | 2022.08 |
| 205 | Laboratory sink plumbing repair work | Tata Daewoo Commercial Vehicles Ltd. | Tata Daewoo Commercial Vehicles Ltd. | 2022.08 |
| 204 | Shinpung pressurization plant piping equipment repair | Gunsan City Waterworks Office | Shinpung pressurization plant | 2022.08 |
| 203 | SCR boiler piping work | Soom Co., Ltd. | Soom Co., Ltd. | 2022.08 |
| 202 | Air and wastewater licensing service/magnetic pump installation | Dio Electronics Co., Ltd. | Dio Electronics Co., Ltd. | 202208 |
| 201 | Scrava polling delivery | Danseok Industrial Co., Ltd. Gunsan Factory 1 | Danseok Industrial Co., Ltd. Gunsan Factory 1 | 2022.07 |
| 200 | Bag filter maintenance and dust collector repair | Korea Glass Industry Co., Ltd. | Korea Glass Industry Co., Ltd. | 2022.07 |
| 199 | Post-processing dust collector duct cleaning and duct installation work | Iljin Steel Co., Ltd. | Iljin Steel Co., Ltd. | 2022.07 |
| 198 | Activated carbon and filter replacement | Woosuk Engineering Co., Ltd. | Woosuk Engineering Co., Ltd. | 2022.07 |
| 197 | Digestion tank A~C series primary digestion sludge extraction piping improvement work | Techcross Environmental Services Co., Ltd. | Techcross Environmental Services Co., Ltd. | 2022.07 |
| 196 | Pipe cutting fume dust collector installation work | Iljin Steel Co., Ltd. | Iljin Steel Co., Ltd. | 2022.07 |
| 195 | Air and wastewater change report permit service | Dio Electronics Co., Ltd. | Dio Electronics Co., Ltd. | 2022.07 |
| 194 | In addition to reporting the start of operation of air and wastewater | Yusu Industry Co., Ltd. | Yusu Industry Co., Ltd. | 2022.07 |
| 193 | bag filter dust collector | Jeongdo Industry | Jeongdo Industry | 2022.06 |
| 192 | Waste super refrigerant coagulation reaction tank FRP coating, etc. | Dasong Kister Co., Ltd. | Dasong Kister Co., Ltd. | 2022.06 |
| 191 | Scrava polling replacement work | Danseok Industrial Co., Ltd. Gunsan Factory 1 | Danseok Industry Co., Ltd. | 2022.06 |
| 190 | Sewage treatment plant odor reduction facility repair work | Gunsan City Waterworks Office | Gunsan City Waterworks Office | 2022.06 |
| 189 | Scrava repair, polling and demister replacement work | Daeil Precision Co., Ltd. | Daeil Precision Co., Ltd. | 2022.05 |
| 188 | Production and installation of local exhaust facilities, air quality permit, hazardous risk prevention plan | PH Energy | PH Energy | 2022.05 |
| 187 | Manufacturing and installation of MPM dust collection facility | Iljin Steel Co., Ltd. | Iljin Steel Co., Ltd. | 2022.05 |
| 186 | 24Silt chamber impurities skip hoist repair | Techcross Environmental Service Co., Ltd. | Techcross Environmental Service Co., Ltd. | 2022.05 |
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