Laos Sustainability Report

26 27 Improving environment management PowerChina incorporates environment management into daily check and annual appraisal and assessment. The Group conducts strict entire-process supervision and control over the environment management status of subsidiary companies. If any irregularity is found, maximum fine can be up to USD100,000. The company benchmarked the environmental and social norms of World Bank and international financial companies, and signed the CA Agreement and Its Supplementary Environmental and Social Standard Responsibility Agreement with the Laotian government, expressly specifying that the Nam Ou River project would follow the principle of "adopting the highest standard "in performing environmental and social responsibility. According to the CA agreement, the company formulates the Specific Location Environmental Monitor Plan considering the onsite situation during the construction period, and identifies factors impacting the environment in different phases by reviewing all the places, sites and processes during the construction period; for pollutants that cannot be recycled or reclaimed, the company formulates protection and control measures, and conducts real-time tracking and monitor to solidly protect the environment around the project. PowerChina Overseas Investment Co., Ltd. actively constructs the environment management system, and pertinently develops and executes a series of environmental protection measures including Sandstone Plant and Concrete Mixing System Waste Water Treatment Measures, Sealing Measures for Dry Process of Stone Material Production and Measures on Central Treatment of Solid Waste, achieving environmental protection targets like zero discharge of construction waste water, zero dust in the air, and zero pollution of construction garbage. In order to strengthen environmental protection management, Nam Ou River Basin Hydropower Co., Ltd. under PowerChina sets up a "Environmental Protection and Water Protection Committee", releases the Charter of Hydropower Station Environmental Nam Ou River Phase II Project attaches importance to environmental management Nam Ou River Phase II Project has set up an environmental protection work leadership team led by the general manager, appointed the HSE management office as the responsible department, and designated dedicated personnel to be responsible for the environmental protection work. The company printed and distributed Nam Ou River Phase II Project Environmental Protection Management System, explicitly specifying the responsibility and work content of all participating units, fully identifying the handling process for waste water, sewage, solid waste, dust and noise; it compiled Environmental Protection Facility Standardization Manual, absorbing the environmental protection management experience of construction projects in China, specifying construction site handling processes during the construction period, and unifying environmental work standards. "Emphasizing ecological and environmental protection is both the starting point and the foothold for implementing projects. Starting from the design, we consider environmental protection in advance. On the basis of complying with international standards and Laos' local environmental requirements, we design a perfect environmental protection work plan, obtain the approved environmental evaluation report, and implement the ecological protection management of the Nam Ou River project systematically in a standardized manner. --Sheng Yuming, Chairman of PowerChina Overseas Investment Co., Ltd. Power Construction Corporation of China Protection and Water Protection Committee, strictly performs the agreement and follows international environmental protection standards, and invites the government and local people to participate in the supervision to ensure that environmental protection is solidly implemented. During period of the project feasibility study, PowerChina fully identifies environmental regulations of the Laotian government and relevant requirements, and engages third party institutions with environmental protection monitor qualification to conduct extensive monitor of the environmental protection work and assist the project to carry out environmental protection work. E Environmental Protection Facility Standardization Manual ΣΙ Laos' State Environment Ministry inspected the environmental protection work of Nam Ou River Phase I Project In June 2017, led by the Director of the Energy Project Environment Assessment Center of Laos' State Environment Ministry, a natural and social environment inspection team consisting of 24 people from Phongsali Provincial Environment Department, Muang Khua County Environment Bureau and Muang Mai County Environment Bureau conducted a comprehensive inspection of the environmental work of Nam Ou River Level-4 Hydropower Station. The inspection team checked in detail construction areas including the level-4 Hydropower Station mixing system, the mechanical repair factory, the lab, the aggregate field and the No.2 slag disposal pit, as well as the treatment of production and domestic sewage, treatment of solid waste, and dust prevention and noise reduction of the site's living area, and gave a high affirmation of the environmental protection work of the Nam Ou River project. Implementing clean production ○ Waste water treatment: PowerChina has set up multiple water quality monitor points in the upper and lower reaches of the construction site and conducts regular check of the quality of river water. The largest 3-stage sedimentation tank in Laos is used to treat waste water, which can be recycled after it is fully precipitated, thus achieving the target of energy conservation and emission reduction. GQ The environmental protection work Nam Ou River Level-3 Hydropower Station strengthens industrial waste water treatment Nam Ou River Level-3 Hydropower Station makes the sandstone and aggregate processing system a control priority for waste water discharge, and carried out rational renovation according to actual conditions. When the sedimentation tank did not work out well, the drainage was rationally remodeled by adding a submerged pump to pump water for re-precipitation; by installing multiple advection-type aggregate filter pools, there is zero waste water discharge in the dry season, and the discharge in the rainy season meets the standard. Industrial waste water treatment Waste residue treatment: Central waste treatment pools have been set up in the construction sites of the Nam Ou River cascade hydropower stations project, and professional domestic waste collection vehicles regularly collect domestic waste of the sites for central incineration and burial; waste tires and waste oil are piled and treated centrally; and factors impacting the environment are regularly monitored to ensure that the environmental protection work satisfies the requirements. ○ Dust treatment: In the production system of Nam Ou River Level-1 Hydropower Station, special dust removal equipment is adopted to mitigate the impact on environment of the dry production process; production machines are completely enclosed to minimize dust. In the level-2 Hydropower Station, six sprinklers operate at fixed time and location; the mixing station is upgraded to a mixing building as the aggregate production equipment, dust removal facilities are added, and a 3-stage sedimentation tank is installed, which is regularly cleaned every one or two days. PowerChina Cement Co., Ltd. carried out a large scale transformation of the dust removal equipment, changed the skeleton of the dust removal bag and the polar line and polar plate of the electrostatic precipitator of the kiln head, cleaned the dust in the porcelain bottle of the electrostatic precipitator of the kiln inlet, replaced the soft connection of the bulk cement discharge skeleton, and implemented clean transportation and planted trees. Laos Sustainability Report