On November 18, the Bureau of Ecology and Environment of Pingliang City, Gansu Province, announced the List of Provincial Eco-environmental Protection Inspectors'Mass Reporting Transfer and Border Supervision and Reform Publicity. Four of the seven problems handed over have been solved, and the "noise" problem complained by Pingliang Conch Cement Co., Ltd. has also been rectified. In 2023,
the informer complained to the Central Inspection Group about the noise problem of Pingliang Conch Cement Co., Ltd. After rectification, the company still had problems. The factory emitted particulate matter at 2-3 o'clock at night, and the equipment was accompanied by strong vibration during operation, which caused damage to the house and personal health of the informer's farm. The informer called the inspection group for verification and treatment.
After investigation and verification, some of the problems reflected are true.
1. About the problem of " I complained to the Central Inspection Group about the noise problem of Pingliang Conch Cement Co., Ltd. in 2023, and the company still exists after rectification". Pingliang Conch Cement Co., Ltd., reported in the complaint, is located in Xiantai Village, Xiamen Township, registered on April 8, 2008, with a registered capital of 470 million yuan, legal representative: Wang Zhixin, unified social credit code: 91620802670827453Q, and its business scope is cement production, non-coal mine mineral resources development, etc. During the supervision period of the central ecological environment protection in
2023, the masses reported the noise and vibration problems of Pingliang Conch Cement Co., Ltd. to the inspection team; In order to thoroughly and comprehensively rectify the problems, Pingliang Conch Cement Co., Ltd. has invested a total of 801,200 yuan to build 150 meters of damping ditches for aggregate crushers, install 150 meters of damping foam boards, 36 damping springs for aggregate production lines, 11 sets of noise sealing facilities for dust collection equipment, and reinforce the foundation pillars of aggregate screening machines. The rectification will be completed by the end of April 2024. On July 5,
2024, the District Bureau of Industry and Information Technology, together with the District Ecological Environment Sub-Bureau and the Xiamen Township Government, conducted a joint self-examination and self-examination on the rectification of the vibration and noise pollution problems of Pingliang Conch Cement Co., Ltd., confirming that the rectification measures for the problems reported by the masses handed over by the Central Ecological Environment Protection Supervision Group were in place, and that the conditions for sales were met and could be completed. From August 2 to 3,
2025, the District Bureau of Industry and Information Technology, together with Xiamen Township Government and Xiantai Village Committee, carried out a mass satisfaction survey on the residents of 7 resettlement sites; 14 households were interviewed, 13 households were satisfied with the problem handling results, 1 household was not satisfied, and the satisfaction rate was 92.86%. Kongtong District is reporting to the provincial and municipal governments step by step to apply for acceptance and sales numbers, and the provincial level has not yet organized acceptance. The normal production time of aggregate and machine-made sand production line of Pingliang Conch Co., Ltd. is from 9:00 to 24:00, which can be adjusted to 24-hour production according to market conditions. The aggregate and machine-made sand production line of Pingliang Conch Co., Ltd. is a fully enclosed operation, and dust collection equipment and dust-proof mesh cover are installed. On August 6,
2025, Gansu Pingliang Ecological Environment Monitoring Center monitored the unorganized air pollutants at the monitoring points around Pingliang Conch Cement Co., Ltd., and the monitoring results of the surrounding particulate matter (TSP) were as follows: the average value of 1 # in the upwind direction was 0.148mg/m ³, and the average value of 2 # in the downwind direction was 0.229mg/m ³. The average value of downwind 3 # is 0.254mg/m ³, and the average value of downwind 4 # is 0.224mg/m ³. The monitoring data conforms to the unorganized emission limit of air pollutants in Table 3 of Emission Standard of Air Pollutants for Cement Industry (GB4915-2013).
2. On the issue of " damage to the house and personal health of my farm caused by strong vibration during the operation of the equipment". The production line of Pingliang Conch Cement Co., Ltd. has built a damping ditch for aggregate crusher, installed damping foam board, damping spring and other equipment, and reinforced the foundation pillar of aggregate screening machine. After completing the rectification of the problems handed over by the Central Eco-environmental Protection Supervision Group, on October 16, 2024, 116100 yuan was invested to replace the hammer of the crusher; From September 11, 2024 to July 28, 2025, 143,500 yuan was invested successively to replace the original steel screen of the aggregate screen machine with the rubber screen, which greatly reduced the vibration and noise generated during the production of the equipment. On August 6,
2025, the District Eco-environmental Bureau entrusted Pingliang Eco-environmental Monitoring Center of Gansu Province to monitor vibration, noise and unorganized air pollutants at five monitoring points, namely, No.48, No.50, No.52, No.53 and No.7 cowshed of Xiantai Village, selected by the residential courtyards around the aggregate production line of Pingliang Conch Cement Co., Ltd. The District Bureau of Industry and Information Technology, the staff of Xiamen Township and the villagers'representatives of Xiantai Village participated in the whole process. The noise monitoring results were 50.60dB (A) in the day and 47.90dB (A) at night for No.48, 50.20dB (A) in the day and 43.70dB (A) at night for No.50, 46.60dB (A) in the day and 48.30dB (A) at night for No.52. No.53 42.10dB (A) in the daytime and 41.50dB (A) at night; The cowshed of Xiantai Qishe is 48.30dB (A) in the daytime and 49.00dB (A) at night, and the monitoring data are in line with the standard limits of Class 2 area in the Environmental Quality Standard for Noise (GB 3096-2008) (< 60dB (A) in the daytime and < 50dB (A) at night). The vibration monitoring results are respectively as follows: No.48: daytime VLz 55dB, nighttime VLz 54dB; No.50: daytime VLz 55dB, nighttime VLz 59dB; No.52: daytime VLz 52dB, nighttime VLz 57dB; No.53: daytime VLz 52dB, nighttime VLz 57dB. The daytime VLz is 58dB and the nighttime VLz is 61dB at the cowshed point in the 7th Community of Xiantai Village, and the monitoring data conform to the standard values (daytime VLz & lt; 75dB and nighttime VLz & lt; 72dB (A)) of the industrial concentration area in the Standard of Environmental Vibration in Urban Areas (GB10070-1988). The unorganized emission concentration of particulate matter from Pingliang Conch Cement Co., Ltd. meets the unorganized emission limit of air pollutants in Table 3 of Emission Standard of Air Pollutants for Cement Industry (GB4915-2013). There is no direct evidence to prove that the vibration caused by the operation of the equipment has caused damage to the houses and personal health of the surrounding farms.
After treatment and rectification, Pingliang Conch Cement Co., Ltd. has invested a total of 801,200 yuan in the noise and vibration problems complained by the central inspectors in 2023, and completed the rectification by building new damping ditches, installing damping foam boards, damping springs, noise sealing facilities for dust collection equipment and reinforcing the foundation pillars of screening machines. In the mass satisfaction survey conducted in August 2025, 13 of the 14 respondents were satisfied, with a satisfaction rate of 92.86%. At present, they are reporting to the provincial and municipal governments step by step to apply for acceptance and sales.
With regard to the emission of particulate matter from 2 to 3 at night, the normal production time of the company's aggregate and machine-made sand production line is from 9:00 to 24:00, which can be adjusted to 24-hour production as required. The production line adopts fully enclosed operation and is equipped with dust collection equipment and dust-proof mesh cover. The monitoring data on August 6, 2025 showed that the unorganized emission of particulate matter in the surrounding area met the relevant limits of the Emission Standard of Air Pollutants for Cement Industry (GB 4915-2013). Third, the vibration of equipment damages houses and affects health. The company has built vibration damping facilities and reinforced related equipment, and subsequently invested 259600 yuan to replace the crusher hammer and rubber screen to further reduce vibration noise. On August 6,
2025, five monitoring points were completed under the witness of many departments and villagers' representatives. The noise and vibration data were in line with relevant standards, and there was no direct evidence to prove that the vibration caused damage to houses and health effects.
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