2022 Environmental Testing Report
Chongqing Tianshi Precision Technology Co., Ltd. entrusted Chongqing Ouming Testing Co., Ltd. to conduct testing on the company's exhaust gas, wastewater, drinking water, and noise from August 4, 2022 to August 11, 2022.
After testing, Chongqing Tianshi Precision Technology Co., Ltd.'s organized waste gas Phase 1 COB, EOL workshop waste gas (G1), Phase 2 COB, and EOL workshop waste gas (G2) testing items for non methane total hydrocarbons, lead and its compounds, tin and its compounds all meet the atmospheric pollutant emission limits in Table 1 of the Comprehensive Emission Standards for Air Pollutants DB 50/418-2016. The pH value, suspended solids, chemical oxygen demand, ammonia nitrogen, petroleum, and animal and vegetable oils tested at the first phase wastewater discharge outlet (W1) and the second phase wastewater discharge outlet (W2) meet the maximum allowable discharge concentration of Class II pollutants in Table 4 of the Comprehensive Wastewater Discharge Standard GB 8978-1996, which is a third level standard for other polluting units.
The pH value, total coliforms, total bacterial count, chromaticity, turbidity, visible substances, odor and taste, oxygen consumption, and nitrate nitrogen in the testing items of drinking water (terminal water) on the 1st floor (W3), 2nd floor (W4), 3rd floor (W5), 1st floor (W6), 2nd floor (W7), and 3rd floor (W8) of Phase 1 all meet the standard limits in Table 1 of the "Sanitary Standards for Drinking Water" GB 5749-2006. Chlorine gas and free chlorine preparations comply with the terminal water standard limits in Table 2 of the "Sanitary Standards for Drinking Water" GB 5749-2006.
The daytime and nighttime detection results of the industrial enterprise boundary environmental noise detection points outside the north boundary of Phase 1 (V1) and outside the west boundary of Phase 2 (V2) meet the daytime and nighttime limits of Class 3 acoustic environmental functional zones in Table 1 of the "Emission Standards for Industrial Enterprise Boundary Environmental Noise" GB12348-2008.
