• Calculated total values may not be consistent with the total values due to rounding of data.
  • Third-party assured values (Independent Assurance Report) are indicated with the mark.

Response to Global Warming

ISO:6.5.5 Climate change mitigation and adaptation
GRI:EN15, EN16, EN17, EN18,EN19, EN27

Prediction of CO2 Emissions in the Building Operation Stage and Reduction Percentage

Prediction of CO2 Emissions in the Building Operation Stage and Reduction Percentage

CO2 Emissions

CO2 Emissions

*In accordance with the calculation method set by the Japan Federation of Construction Contractors

CO2 Emissions in the Construction Stage

CO2 Emissions in the Construction Stage

Scope3 (Analyzing Lifecycle CO2 Emissions)

Taisei Corporation is endeavoring to determine the broader Scope3, calculated using industry organization criteria* and GHG protocol criteria.
For FY 2014 we were able to calculate for the 10 categories related to our business activities out of the total of 15 categories, for which the quantity of emissions was about 17 million t-CO2. For our company the quantity of emissions was greatest for CAT. 11 (use of sold products), and energy efficient and low carbon technologies during planning and design of buildings is an essential factor.


Response to Climate Change, and Information Disclosure

In 2006 Taisei Corporation started responding to the CDP "Climate change" program questionnaire, and for five consecutive years since 2010, we have been selected as a disclosure leading company. In FY 2014 we were selected as a "Climate Disclosure Leadership Index (CDLI)" company and a "Climate Performance Leadership Index (CPLI)" company. 15 Japanese companies were selected for both CDLI and CPLI, of which only one was in the general construction business.
Measurement of CO2 emissions in overseas works was started from FY 2012, and in FY 2014 about 20,000 tons of CO2 emissions was confirmed for civil engineering construction carried out in Sri Lanka. The company has also started a carbon pricing initiative towards realization of a low carbon society.

Supply Chain (Environment)

In the CDP supply chain program, disclosure of information regarding CO2 emissions of the company's suppliers, etc., is required. In FY 2013 Taisei Corporation was one of the few Japanese companies to participate in this program, and in FY 2014 we have requested the cooperation of more than 40 suppliers from among CDP participating companies. Other CDP programs that companies undertaking are Water (water risks) and Forest (forest risk commodities), which currently have a major effect throughout the world, for which information disclosure questionnaires started to be distributed in 2009.

Contribution to realizing Low Carbon Society

The company implements environmentally friendly design utilizing CO2 emissions data, to reduce the predicted CO2 emissions during the building operation stage. We are also engaged in the development of advanced environmental technologies, such as urban-style ZEBs, etc. (Special Feature)
Intensity targets (emissions per construction turnover) have also been set for the quantity of CO2 emissions during the construction stage, and all domestic construction sites endeavor to reduce the environmental impact through CO2 Zero Action activities.

Reduction Rate of Predicted CO2 Emissions in the Building Operation Stage


Reduction Rate of CO2 Emissions in The Construction Stage


Effective Utilization of Resources

ISO:6.5.4 Sustainable resource use
GRI:EN2, EN23, EN28

Emissions and recycling rate by construction waste category

Emissions and recycling rate by construction waste category

Quantity of construction waste

Quantity of construction waste

Construction waste treatment breakdown

Construction waste treatment breakdown

Adoption of green procurement items

Adoption of green procurement items

Every year the green procurement items are reviewed based on the "Green Procurement Guidelines" with the objective of adopting materials and equipment and applying construction methods with low environmental impact during the design of structures. In FY 2014 the number of items was 83.
In FY 2014, 7.9 items were adopted per building designed project. Equipment like energy saving lighting fixtures and sanitary wares were adopted per building accounted for nearly 70%.

Promotion of 3R Activities and Green Procurement

Construction waste final disposal percentage / green procurement percentage In FY 2014, the final disposal rate of construction waste excluding polluted mud and waste not originating from the company was 4.8%. (From FY 2014, the notation has been changed from the recycling percentage)
Also, the green procurement percentage calculated from procurement data was 36.1%, as a result of operation of the "Green Procurement Guidelines".
(Refer to Material Flow for the quantities of the main green procurement building materials)

Final Disposal Rate of Construction Waste


Conservation of Biodiversity

ISO:6.5.6 Protection of the environment, biodiversity and restoration of natural habitats
Assessment of biodiversity risks
Taisei Group's Technologies

Towards a richer natural environment

Ecological Planning

For construction planning taking biodiversity into consideration for richer technology-nature, it is important to study the environmental characteristics of the region under consideration, and to set the planning policy utilizing its potential. "Ecological Planning" is a technology for planning and implementation of the creation of the ideal environment for that locality, from analysis of the four viewpoints of water, greenery, wind, and people, and three scales of broad, medium, and narrow for the proposed location of the facility.
As a result of more than 10 years of monitoring at Sapporo Dome, which was designed based on our "Ecological Planning (reduce or avoid the impact)", it was found that there was an increase in the number of species of birds and insects compared with prior to construction, and there was an increase in biodiversity. Sapporo Dome utilizes this result in environmental education activities for local elementary school students.
These initiatives were recognized as "Sapporo Dome ECOMOTION and Taisei Ecological Planning" as an affiliated project of the "Japan Committee on UNDB (UNDB-J)".
In addition, utilizing the knowledge gained from Sapporo Dome, and other projects, the tablet using tool "Ikimono (living creatures) Concierge" was developed for evaluation and communication regarding biodiversity using a tablet.
These technologies will be used in the future for proposing to customers schemes taking biodiversity into consideration.

Taisei Group's Initiatives

Learning and Participating

Environmental Education

In FY 2014 Taisei Corporation published the environmental education pamphlet "TAISEI MEGANE (glasses)" for children on the theme "Awareness". The company's environmental initiatives are summarized in an easy to understand manner in picture book format.
In addition, we are engaged in cultivating ESD* and environmental human resources through implementation of e-learning on natural resources for all employees, through experiencing the link between nature and humanity by the participation of group company employees and their families in activities such as Tokyo Greenship Action, volunteers for making dormouse nest boxes, etc.

Environmental Contribution Activities

Since FY 2010, the company has been carrying out fundraising activities among the employees through the "Taisei 1 Ton Club". In FY 2014, 179 members participated, providing support through donations to 8 different organizations engaged in protection of rare animals and forests, both within Japan and overseas.
Also, we have been engaged in various environmental activities such as promotional initiatives to industry groups and the Eco - First Promotion Counsel, etc., participation in The Green Wave and WaterProject, etc.

Nature Co-existing Society

*ESD(Education for Sustainable Development)


Activities through Industrial Organizations

Taisei Corporation is undertaking conservation of biodiversity through KNCF/Keidanren Committee on Natural Conservation.
We made a presentation on the company's initiatives regarding Sapporo Dome and animal pathways at a side event to the 12th meeting of the Conference of the Parties to the Convention on Biological Diversity held in October 2014 in Pyeongchang, Republic of Korea. Also, we are engaged in planting activities on the Tsunami Memorial Park NAKANOHAMA in Miyako City, Iwate Prefecture.

Reduction of Environmental Risk

ISO:6.5.3 Prevention of pollution

Risk Management at Construction sites and Offices

Proportion of site environmental patrol observation items (FY 2014)

Proportion of site environmental patrol observation items (FY 2014)

Site Environmental Patrols are implemented to survey compliance with environmental laws and regulations on construction sites throughout the company. Corrective actions and preventative measures are taken in response to observations, in order to achieve continuous improvement.
We also work to raise awareness of proper management of harmful chemicals such as asbestos and PCBs, etc., and to achieve appropriate processing and proper management of contaminated soil, etc.

Complaints on Construction Sites and Responses Taken

Proportions of complaint types and examples of responses (FY 2014)

Proportions of complaint types and examples of responses (FY 2014)

Types Response measures

Types Response measures (examples)
Noise In response to complaints regarding noise due to construction and wastewater pumps, adjustments in working hours, installation of soundproof sheets, changing the location of pumps, etc., have been implemented
Dust In response to complaints regarding dust due to mud on nearby roads, thorough cleaning of tires, and reduction of dispersion using water sprinkling vehicles, etc., have been implemented
Vibration In response to complaints regarding vibrations in nearby
houses due to movements of heavy equipment, controls having placed on the speed of movement on site, and steel plates have been laid on the locations where the vehicles move
Traffic obstruction It is desirable to improve the poor visibility at corners due to temporary enclosures, and this has been dealt with by further increasing the corner cutoff
Radiowave interference When there are reports of poor television reception or radiowave interference, countermeasures against radiowave interference are implemented
Water contamination Muddy water is washed downstream by the rise in river water levels due to heavy rain. This is dealt with by installing wastewater pumps within the rivers, and processing the muddy water

Proper Management of Construction Waste

Taisei is promoting the use of the electronic manifest (waste transmittal forms) in cooperation with waste processing companies, collection and transport companies, and waste disposal companies, in order to achieve proper processing of construction waste.
As a result, in cities its use is virtually 100%, but there are some sites where the electronic manifest system cannot be introduced due to conditions of the construction site or the customer, or the scale of the companies. Introduction of the electronic manifest results in reliable management and reduction in labor, so we continue to make efforts to increase this percentage.

Rate of Using Electronic Manifest at Construction Sites


Promotion of Technical Development

As environmental problems become more serious year-by-year and environmental risks increase, Taisei has taken this as an opportunity to create new businesses, and is promoting environmentally friendly technological development. The development fields are diverse, such as low carbon, resource recycling, natural symbiosis, etc.
T-Root® is a simple raking steel pipe-pile foundation construction method for solar panel racks and small-scale structures, derived by biomimetics (bio-mimicry) obtained by imagining the roots of trees. The method enables stable quality foundations to be installed in a short period of time on various site conditions without the use of excavation or concrete, and also enables removal and restoration of the original condition to be easily carried out. Therefore in addition to the economic effects such as reduction in the construction time and reduction in cost, CO2 emissions are reduced through construction that does not require heavy equipment, that enables effective utilization of resources, reduction in the environmental impact on the local ecosystem, and care for the environment. In March 2015 the method obtained the "Certificate of Technological Evaluation" from the Japan Society of Civil Engineers.

T-Root(R)Conceptual Diagram

Comprehensive Environmental Activities

CO2 Zero Action

TAISEI commenced CO2 Zero Action, a commitment to seven items for effectively reducing CO2 emissions in construction, at all construction sites in April 2012.
The aim of the program is to further promote corporate environmental activities, including adherence to Environmental Policy, achieving the Taisei Agenda and vitalizing environment management systems.

CO2 Zero Action Initiatives

(1) Indicate implementation status of environmental activities using temporary enclosures, etc.
(2) Turn off unnecessary lights in offices and site stations
(3) Moderate temperature of heating/cooling systems in offices and site stations
(4) Utilize rainwater and spring water on site
(5) Conduct daily checks and maintenance of construction equipment and vehicles
(6) Practice idling stop
(7) Promote eco-friendly driving

Eco Model Project

TAISEI has designated construction sites that minimize environmental impact, particularly during construction, as "Eco Model Construction Sites." At these sites, we aim for zero emissions and execute advanced measures to reduce CO2 emissions during construction. We believe that combining conventional practices with the CO2 Zero Action program will be effective in reducing power consumed at building sites.

Eco Model Activities

(1) Zero emissions
(2) Reduction of greenhouse gases (=Reduction of CO2 emissions)
(3) Environmental consideration

Response to Restoration and Recovery from The Great East Japan Earthquake

Four years have now past since the occurrence of this earthquake, and we still continue to be engaged in restoration and recovery of the areas affected by the disaster.
In connection with decontamination technologies, we are developing environmentally friendly soil decontamination technology, ensuring the safety of the workers engaged in related construction, and implementing thorough patrols. Also, we are making various proposals regarding environmentally friendly urban planning, development of environmental infrastructure, etc., to further restoration and recovery.
In the Tohoku region, we are supporting recovery through the "Taisei 1 Ton Club", and as a participating member of the Keidanren Committee on Nature Conservation. We are also cooperating with local forestry cooperatives, investigating the effective use of domestic timber resources, utilization of forestry carbon credits, etc.

Providing Environmentally Friendly Technologies

In FY 2014, there were 41 press releases regarding research and development of environmental technologies and their application to projects. Of these, the largest number was 16 in connection with zero energy buildings (ZEB) and smart community related technologies in the field of energy efficiency and response to global warming. This was followed by 9 relating to decontamination and disaster related technologies, and other announcements were in connection with the development of materials that lead to low carbon emissions and effective utilization of resources, reduction of environmental risk, systems relating to the field of natural symbiosis, etc. These technologies that reduce the environmental load have received many favorable external evaluations.

Number of Media Announcements Regarding Environment Related Technology Development


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