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1 Water temperature %u21031 time / 6 months31.4 30.4 282 Hydrogen ion concentration index (pH value) 5~9 7.4 7.4 7.23 Chemical Oxygen Demand (COD) 500 mg/L 394 121 1274 Biochemical Oxygen Demand (BOD))300 mg/L 153 27.3 315 Suspended Solids (S.S.) 300 mg/L 38.5 25.4 8.66 True Color 400 Color unit 37 <25 <257 Free available chlorine 2 mg/L N.D. N.D. N.D.Yilan No. 2 Plant wastewater discharge (annual / t)605.4 Water pollution controlBioteque Yilan No. 2 Plant and E-Ko Plant both have implemented rainwater and wastewater separation systems and installed wastewater treatment tanks. Wastewater is discharged through a wastewater outlet approved by the Yilan County Environmental Protection Bureau and is sent to the sewage system for treatment. 9,6046,3784,2782021 2022 2023 ItemStandardValue UnitTestingFrequency 110%u5e74%u6aa2%u6e2c%u503c 111%u5e74%u6aa2%u6e2c%u503c 112%u5e74%u6aa2%u6e2c%u503cBBIOTEQUE CORPORATION2023 Sustainability ReportAdditionally, BOD values are self-tested every quarter to ensure compliance with discharge standards. Regular cleaning or increased cleaning and removal frequency is carried out based on test results. Every six months, a qualified testing company conducts wastewater quality analysis and reports according to regulations, with all results meeting discharge standards.Plant: Yilan No. 2 Plant