Environmental Management

Circular Economy Model

CTCI develops its engineering circular economy model based on the theory of circular economy, which includes the three significant aspects of the circular supply of resources, resource recovery, and extension of the life of products and assets. 

Policy and Management System

In order to understand about comprehensive and macroscopic environmental trends, and consider multifaced environmental issues as part of business activity, CTCI introduces ISO 14001:2015 environment management system, adopting integrated management to environmental factors. In practical execution, we incorporate it with ISO 45001:2018 occupational health and safety management system into the health, safety, and environmental (HSE) management system, so as to bring it into the Company's routine operations. The Company's HSE management system is applicable to the activities, products and services that the Company can either control or influence in design, procurement, construction, commissioning phases i.e. 100% of revenue collection. Moreover, the system is certified by a third-party.
▼ Safety, health, and environmental policies

▼ Effectiveness in Water Resource Management
Region Measures Water conservation (in cubic meter)
2015 2016 2017 2018
Headquarters building

▶Printing water conservation slogans

▶Adjusting toilet water flow

▶Installing sensor-activated faucets

▶Weekly inspection and adjustment of amount and time of water flow at restrooms and pantry sinks

▶Circulating and re-using the water in the outdoor landscape pool

▶ Elevating water tanks to increase water pressure by using the difference in height, thus the times of the activation of pressure motors can be minimized.

▶Precise timing for closing inlet valves before cleaning water tanks.

526 3,109 -1,030 869
▼ Air Pollution Preventive Measures in Construction Sites
Item Measures Purpose
Land leveling and excavation operations
  • Formulating work plan in advance to minimize exposed land and back-fill swiftly, as well as paving plant vegetation and cleaning soil pollution, taking pollution prevention measures.
  • Daily sprinkling with sprinkling truck.
  • Sprinkling using temporary automatic sprinkling systems or manual sprinkling.
  • Avoiding secondary pollution from mud resulting from over-sprinkling.
  • Water supply and cost are taken into consideration for the sprinkling plan.
  • Covering soil mounds with dust gauzes.
Preventing blowing dust and dust fall
Material and soil stacking
  • Setting up fences for stacking.
  • Sprinkling to maintain moisture or covering with canvas when stacking is exposed under the sun or in windy conditions.
  • Waste soil must be shipped to qualified disposal grounds, landfills, or processing grounds.
Preventing blowing dust and dust fall
Sandblasting operation
  • In principle, the operation shall be carried out in protection-equipped indoor conditions.
  • Sand on the sandblasting grounds is swept away or sprinkled upon.
  • Protective equipment includes sprinklers, ventilation, and particulate control, with bag-type dust collectors installed when necessary.
Preventing air pollution and impact on health
Spray paint, paint, and solvents
  • Operated in indoor environments with control equipment.
  • Not allowed to operate under unstable weather conditions.
  • Installing ventilation and washing (using water or otherwise) equipment downwind of the operating location.
Preventing effusion of VOCs and impact on health
Vehicular transportation and cleaning
  • Vehicles transporting construction materials or particulate waste are covered with canvas or another non- permeable cover.
  • All vehicles and machinery must be hosed down in the washing pool before leaving construction sites to ensure cleanliness.
  • After loading, truck beds must be covered with tarpaulin, and then tied up the tarpaulin.
  • When driving through a construction site, vehicles must follow construction site rules and the instructions of construction site managers.
Preventing blowing dust and dust fall
Open burning
  • Any open burning is prohibited.
Preventing air pollution and impact on health
▼ Soil and Groundwater Protection in Construction Sites
Item Measures Purpose and results
Sewage plans
  • At the planning stage of the construction site, sewage pipeline arrangement is included in the design process.
  • In situations where wastewater from the construction site is included in the proprietor's existing wastewater treatment facility, laws and regulations apply.
Sewage plans may minimize dusting on the construction site and prevent air pollution; they may also be used in concrete cooling and curing.
Sewage channels
  • Sewage channels are constructed using impermeable materials to prevent wastewater from entering the soil and causing secondary pollution
Sewage channels may minimize pollution from wastewater entering the ground; they may also be used in sorting and collecting wastewater and rainwater on construction sites.
Domestic wastewater
  • Installing septic tanks
  • Domestic wastewater is released into the sewage system of a neighboring business or city.
  • CTCI contracts qualified and legal service providers for collecting, transporting, and treatment of domestic wastewater.
Minimizing pollution from wastewater directly entering the soil; bathroom sewage is collected in septic tanks and removed regularly by legal contractors to prevent overflowing, and other types of domestic wastewater are released into the sewage system.
Wastewater from construction
  • Installing settling basins.
  • After the settling process, the supernatant is extracted for sprinkling on the construction site.
  • Wastewater that does not contain hazardous substances and is not unclean is reused.
  • When containing hazardous substances or is unclean, the wastewater is treated on-site, or by a contractor that treats the wastewater until it meets environmental standards for effluents, and then released.
Preventing wastewater from construction from directly permeating into the soil; the wastewater is collected and sorted with treatment facilities, and the reusable water is reused.
Wastewater generated from commissioning process
  • Wastewater is collected according to water quantity and quality for release or reuse.
To prevent wastewater generated from commissioning directly entering the sewage system, the wastewater is sorted based on water quality for reuse or released via legal pipelines.
Machinery maintenance
  • For regular machinery maintenance, oil changes are not allowed on construction sites, preventing oil dripping and pollution during the oil change process.
  • Before machinery and construction vehicles leave a construction site, they are required to be cleaned of mud using sprinkling equipment or washing pools. The wastewater from car washing is also necessary to be appropriately handled.
Machinery is maintained and repaired regularly to prevent exhaust that does not comply with regulations. Oil seals are periodically changed to avoid the leakage of heavy oil.
▼ Resource Recycling Results
Region Type Measures Result(kg)
2015 2016 2017 2018
Headquarters building Paper
  • Encouraging the use of recycled paper
  • Installing paper recycling bins
21,045 18,010 17,290 13,840
Headquarters building Metals
  • Installing recycling bins for recycling resources
485 290 190 185
Headquarters building Plastic
  • Installing recycling bins for recycling resources
790 480 320 294
Headquarters building Kitchen waste
  • Installing kitchen waste recycling bins
3,516 2,189 6,953 7,000
Construction sites Construction waste (iron)
  • Recycling resources
150,540 0 0 3,918,941
Construction sites Construction waste (wood)
  • Recycling resources
264,426 2,040,000 285,490 0
Construction sites Construction waste (paper)
  • Installing recycling bins for recycling resources
687,437 5,150 - -