Protecting the precious environment
Cyclical resource use

We use resources carefully in every process of our business activities and aim to recycle them as much as possible.

Appropriate treatment and recycling status of construction waste

Construction waste treatment status

In fiscal 2019, the volume of construction waste discharged was 467,000t (70.0%) from new building construction work and 199,900t (30.0%) from demolition work, totaling 666,900t. This was an increase of 101,400t (or 17.9%) from fiscal 2018.

* Volume per unit of net sales is based on new building construction work.
* Volume per unit of net sales excludes the portion for recycling treatment facilities (wood waste and waste plastics); only data of mixed waste has been collected.

Recycling status of construction waste

In fiscal 2019, the volume of recycled construction waste was 462,900t (70%) from new building construction work and 197,700t (30%) from demolition work, totaling 660,600t (99.0%). In demolition work, 0.3t of halon were collected for destruction process and 69.05t of asbestos was properly processed and disposed of.

There was no release of refrigerant chlorofluorocarbon (CFC) during the process.

Promotion of the Use of Manufacturers’ Recycling Systems

Recycling by manufacturers (wide-area certification system) refers to a system in which product manufacturers are authorized by the Minister of the Environment to collect and recycle their products that became wastes (product offcuts). The system ensures proper recycling of wastes.

At Haseko, for example, we collect plasterboards from construction sites and separates them into plaster powder and paper at other manufacturers’ plants. Plaster powder is recycled into raw materials of plasterboards, and paper is recycled into raw materials for paper production.

In fiscal 2019, we recycled 4,183t of waste plasterboards.

Yard for separating waste plasterboards
(protected from rain by roof and sheets)

Reducing cardboard packaging materials through the use of reusable boxes

At construction sites, we have collaborated with manufacturers to reduce the amount of cardboard packaging at the time of delivery to the construction sites by using returnable packaging for water heaters and reusable boxes for power distribution boards for each condominium unit and also downlight appliances for private areas. As an additional effort to reduce the use of cardboard for packaging, downlight appliances for private areas of condominiums are delivered to worksites after having lightbulbs pre-installed at their factories.

Returnable packaging for water heaters
Reusable boxes to deliver power distribution boards for each condominium unit
Reusable boxes to deliver power distribution boards for each condominium unit

Lightbulbs installed to downlight appliances before delivery to worksites

Execution division's educational initiatives

Education for new employees

To train new recruits with an engineering background before assigning them to duties, we conducted a training session for separating industrial waste generated at a construction site and took them on a tour of inspection of an intermediate processing facility of industrial waste.

At the construction site, we held an on-the-job training session on the generation status of industrial waste and management by separation of industrial waste, and at the intermediate processing facility, participants saw the waste treatment process and learned the importance of resources and the significance of recycling.

Education of skilled workers at construction sites

To promote the separating and recycling of waste at construction sites, we conduct a patrol of the sites by a designated industrial waste disposal company once a month to check the state of sorting. Based on patrol results, we analyze the state of sorting for each site and offer waste separation education suited for each site.

Initiatives to Reduce Wastes from Office Activities

Effective utilization of paper resources

In fiscal 2019, copy paper usage was 17.91 million sheets. Amid the increasing work volume, copy paper usage increased 0.7% year-on-year by 130,000 sheets. Going forward, we will continue to promote double-sided copying, copying of two or more pages on one side of paper, use of reverse side of used paper, and reduction of conference materials in an effort to effectively utilize paper resources.

Promotion of recycling of resources

In fiscal 2019, the green purchase rate of stationery was 93.5%. The purchase rate has been maintained above the 90% level, which is the result of the widespread acceptance of the promotion of recycling of resources.

Reduction of total waste disposal volume

In fiscal 2019, the total waste disposal volume decreased 24.6% year-on-year to 27.6t. Going forward, we will continue making efforts to reduce the volume of waste by utilizing recycle boxes and separating waste in thoroughgoing manner.

Water resources

Water is an essential resource for people's lives. In order to carefully use the limited water resource, the Company monitors its water usage and prevents pollution, striving to conserve water resources.

Water Usage Trends

The Company's water usage is as follows.

Category Unit FY2017 FY2018 FY2019
Water intake*1 Construction sites
Water intake thousand m3 333 349 408
Office activities
Water intake thousand m3 30 30 28
Total water usage thousand m3 363 379 435
Effluents*2 Construction sites
Effluents thousand m3 254 295 308
Office activities
Effluents thousand m3 29 28 26
Total effluents thousand m3 283 323 333

*1 Aggregated amount of water taken from public water
*2 Aggregated amount of water discharged to public water