realization of a sustainable and environmentally …...the taisei group environmental report 2019 2...

The Taisei Group Environmental Report 2019 1

By improving and applying environmental technology, the Taisei Group is striving to achieve the 2050 Environmental Targets “Sustainable and Environmentally Friendly Society” involving the entire value chain in unity.

Realization of a Sustainable and Environmentally Friendly Society

Promotion of Environment Management Activities

We established the Environmental Policy to work on the formation of high-quality social capital through our corporate activities

having the construction business as the core in harmony with nature under the Taisei Group’s philosophy, “To create a vibrant

environment for all members of society.” Based on this policy, we set up the 2050 Environmental Targets and identify ESG materi-

ality, and clarify our position to help reduce the burden on the global environment.

EMS Organization (ISO14001)

President Chief ofEnvironment Division

Company-wide EMS

EMS of each division

EMS of each branch

Other organizations: Central Safety Committee,Energy-Saving Promotion Committee,Taisei Group Environment Promotion Council

EnvironmentCommittee

ISO14001 certification• Scope: The head office and all 13 branch offices (certified rate: 100%)• Certification registered in 1998

PDCA for Environment Management System Based on ISO

We are operating an environment management system (EMS) based on

ISO14001:2015.

By conforming to environment-related laws and regulations,

and participating in organizations and initiatives related to climate change

such as CDP* Japan Club, we identify risks and opportunities among

social requirements related to climate change, etc., internal and external

environmental issues and needs. To achieve the Environmental Targets

established from a long-term viewpoint, we aim to improve the activities

continuously by using the PDCA cycle for EMS. In this way, we also

provide value to our stakeholders, and generate business opportunities.

EMS’s Organizational Frameworks

Environment strategies including the Environmental Policy and the

medium- to long-term targets are deliberated on by the Environment

Committee, and reflected in the company-wide EMS activities.

The committee is chaired by the President, and consists of committee

members including members of the board. It holds a meeting four times

a year. We also use the meeting committee structure for group compa-

nies to share the know-how in environment management and implement

measures as the whole group.

Stakeholders’needs

Identification of risks and opportunities

Environmental Policy

TAISEI Green Target 2050

Annual Environmental Targets

PDCA of annual activities

Provision of value to stakeholdersGeneration of sustainable business opportunities

Realization of a Sustainable and EnvironmentallyFriendly Society

A P

C D

Management review Improvement

of activities

Performanceevaluation

EMS implementation plan of the head

of�ce and branches

Technologydevelopment

and deploymentEffort related to

environment protection

Cooperation among supply chainCooperation with stakeholders

Environmental Plan /Environmental Policy

based on theGroup’s Philosophy

Environment risk and social issuesHigh temperature, water shortage,

torrential rain, environmental pollution,loss of natural resources, price hikes of building

materials,worsened labor andliving environment through urbanization,

environmental laws and regulations, tax system,changes in the demand for buildings and

infrastructurelarge-scale disasters,social assessment

Internal / External Issues and Needs of the Organization

* It is a non-profit organization based in the U.K., and it sends questionnaires on environmental strategies and greenhouse gas emissions to major companies in the world, analyzes and evaluates the replies, and publicizes it for investors.

ISO26000 • Environment



For the Realization of a Sustainable and Environmentally Friendly Society

As we can see from the adaptation of the Paris Agreement, which received much attention in the world, and SDGs, international

society is accelerating the movement toward achieving a sustainable and environmentally friendly society. Based on this trend, in

2018 we identified important ESG issues (materiality) which contribute to the achievement of SDGs. We also reviewed our me-

dium- to long-term goal, 2050 Environmental Targets (TAISEI Green Target 2050) based on environmental issues such as climate

change, recycling of resources, co-existing with nature and environment pollution risk. As the entire group, we are striving to

accomplish the “Realization of a Sustainable and Environmentally Friendly Society.”

Activities to Reduce Environmental Impact, TAISEI Sustainable Action (TSA)

Taisei Corporation is promoting company-wide activities to reduce environ-

mental impact, such as by promoting paperless meetings, adopting LED

temporary lights, ensuring energy-saving operation of heavy machinery and

vehicles, using hybrid-type heavy machinery, utilizing renewable energy and

arranging a green environment that pays attention to people’s wellness,

under the name of TAISEI Sustainable Action.

Through the promotion of TSA, we are reducing greenhouse gases (CO2)

by improving the efficiency of energy usage for the construction stage at all

worksites and utilizing renewable energy.

Moreover, to have employees and many people involved in construction

recognize the importance of reducing environmental impact, we distribute

the “Guideline for the Achievement of Targets,” which presents detailed

examples to demonstrate the relationship between environmental impact

reduction and the improvement of productivity. We also established a new

award system to evaluate ideas about environment activities, which can be

used as a model, as well as ambitious challenges. In this way, we aim to

achieve Environmental Targets.

Please refer to p.11 for the material flow.

Realization of a Sustainable and Environmentally Friendly Society

TAISEI Green Target 2050Environmental Targets of Taisei Corporation by 2050

“Guide for Achieving Targets”

* Total CO2 emissions at construction stage and predicted CO2 emissions at operation stage• All CO2 reduction rates are comparisons with FY1990.

2030 Targets

CO2 emissions at construction stage –62%Predicted CO2 emissions at operation stage –55%

Low Carbon Society

• To realize a society with no climate change risk

CO2 emissions* Aim for

–80%

Recycling Oriented Society

• To realize a sustainable, resource recycling society

• To create a society where people co-exist with nature

Minimizing impacton natural capital

Nature Co-Existing Society

• To realize a society where safetyis ensured

Aim to provide valuewith zero

environmental risk

Safety Secured Society

Aim for final disposal rateof construction waste of

0%


FY2018 Results Against Environmental Targets and FY2019 Targets

*1 Target base year : FY1990.*2 Target base year : FY2010.

● KPI Key Performance Indicator

EnvironmentallyConscious

SocietyImplementation Measures Management Indicators

FY2018

FY2019 targets

Targets Results

Low Carbon Society

Reduction of CO2

emissions

At construction stage *1

CO2 emissions per construction cost(intensity)

–25% –28.9% –26%

At construction stage *1

Total CO2 emissions–51% –44.7% –51%

At building operation stage *1

Predicted CO2 emissions of design-build projects

–38% –40.2% –39%

Back-office departments *2

Energy consumption (Intensity)–18% –21.0% –19%


Promotion of buildingdesigns that consider

resource recycling

At building design stageNumber of green

(environmentally conscious) procurement items

10 per project or more

9.7 per project10 per project

or more

Promotion of recyclingconstruction waste

Final disposal rate 3.7% or less 3.4% 3.4% or less

Nature Co-Existing Society

Implementation of proposals that

consider biodiversity Number of proposals 30 or more 35 30 or more

Implementation of biodiversity conservation activities at construction stage

Number of implemented projects 20 or more 18 —

Safety Secured SocietyProper management of

construction waste,construction waste water,

polluted soil, harmful and / or chemical

substances andradioactive materials

Zero environmental accidents(Implementation of management

procedure based on“Operation Manual for Priority

Environmental Issues” )

0 0 0

KPI

KPI

KPI

KPI

KPI

KPI



For Realization of Low Carbon Society (Risks and Opportunities)

In recent years, the trend toward rising temperatures, together with disasters brought about by larger typhoons and extreme

torrential rain, have become environmental risk factors that cause interruptions and delays in construction for the construction

industry. At the same time, Zero Energy Building (ZEB), a measure to mitigate climate change, has created new business opportu-

nities by solving and responding to problems with technology and initiatives. “Adaptation to climate change” was stated as one of

the socio-economic background factors required for green infrastructure, in the “Green Infrastructure Promotion Strategy” an-

nounced by the Ministry of Land, Infrastructure, Transport and Tourism in July 2019. Taisei Corporation regards the “expansion of

markets for strengthening infrastructure against climate change” as an opportunity to receive orders, and is working to expand this

opportunity by promoting technological development and design proposals related to “green infrastructure,” which will alleviate and

reduce damages using natural functions.

Taisei Corporation refers to the TCFD (Task Force on Climate-related Financial Disclosures) recommendations to identify risks and

opportunities that account for the effects of climate change over the short- to long-term, employ the identified items in various

initiatives in its EMS (Environmental Management System).

For Realization of Low Carbon Society

Major Results in FY2018

● SBT Certification and Medium and Long-Term Activities

Taisei Corporation’s greenhouse gas reduction target was certified by Science Based Targets (SBT), an international initiative. Our

CO2 emission reduction target for 2030, which is a benchmark of Environmental Target 2050, was recognized as having a scientific

basis, and contributes to the achievement of the target of the Paris Agreement to keep the temperature to less than two degrees

Celsius above the level before the Industrial Revolution.

Through the popularization of ZEB and environmentally friendly designs for customers, we have been working on reducing

environmental burden and CO2 at worksites in Japan during construction by establishing CO2 reduction intensity targets (compared

with the value of finished work) for the building operation stage (Scope 3) and construction stage (Scope 1+2). Our 2030 target

certified by SBT was reflected in the annual Environmental Targets. To achieve the targets, in addition to implementing TSA (see

p.2), we will cooperate with various stakeholders including supply chain partners and customers to reduce the emission amount.

Taisei Corporation’s SBT:

Reduce Scope 1 + 2 emissions (CO2 at construction stage) by 26% by 2030

Reduce Scope 3 emissions (CO2 at building operation stage) by 25% by 2030

* Both SBTs are compared with the amounts in FY2013. Please refer to the following KPIs indicated on p.5.

* International standard for the calculation and reporting of greenhouse effect gas (GHG) emissions

103t-CO2 Scope 3 (upstream) Scope1+2 Scope 3 (downstream)

GHG protocolstandard*

Category 1 to 82,400

236Category 11 to 12

3,400

For environmental risks (negative impact) and opportunities (positive impact), please refer to “Important ESG Tasks for the Taisei Group (Materiality) and Impact on Corporate Activities” on p.14 of TAISEI ANNUAL REPORT 2019.


● CO2 Emission Volume by Scope (Non-Consolidated)


For details regarding Aichi Environmental Research Center & Aichi Prefectural Institute of Public Health, please refer to p.35 of TAISEI ANNUAL REPORT 2019. For the ZEB Demonstration Building at Taisei Advanced Center of Tchnology, please refer to the following website.

WEB https://www.taisei.co.jp/english/profile/technology/

For Realization of Low Carbon Society

● CO2 Emission by Business (Non-Consolidated)

● Predicted of CO2 emissions in the building operationstage and reduction percentage (Non-consolidated)

■ Reducing Environmental Impactat Construction Sites

Taisei Corporation has been implementing “CO2 Zero Action,” an initiative to reduce environmental impact in the construction stage, at all construction sites in Japan and at some construction sites overseas in cooperation with many companies in the supply chain.

Specifically, as basic activities to be implemented at the con-struction sites, seven items including energy saving, use of rainwa-ter, fuel-economical driving for heavy machinery/vehicles have been implemented regularly.

■ Promoting ZEB for Buildings Designed by Taisei CorporationTaisei Corporation calculates Scope 3 emissions for ten categoriesrelated to its business.

By promoting energy saving and ZEB in buildings that we design, the reduction rates of predicted CO2 emissions at the stage of building operations will be improved. This helps reduce the CO2 emissions in Category 11 (use of products sold) in Scope 3 based on the GHG protocol criteria.

We are currently steadily accumu-lating results and accelerating the spread of highly marketable ZEB (Aichi Environmental Research Center & Aichi Prefectural Institute of Public Health; the New Head Office Building of Kinki Sangyo Credit Union; the ZEB Demon-stration Building at Taisei Advanced Center of Tchnology, and the Next Generation R&D Building at the Technology Center, etc.).

The world’s first ZEB demonstra-tion building, which has acquired platinum WELL certification (all newly constructed/existing buildings)

*1 Base years for CO2 emissions targets: FY1990 *2 Including dissemination and promotion of ZEB● The calculated total values may not be consistent with the total values due to data rounding. ● Third-party assured values (independent assurance report on p.15) are indicated with the mark.

* Green Infrastructure: In urban planning, actively using the natural functions of weather, soil and plants to create roads and facilities. This is a new infrastructure concept that uses the functions of natural ecosystems to build social capital and manage national territory.

(Non-consolidation) FY2018 Targets FY2018 Results FY2019 Targets Department responsible for promotion

At construction stage: CO2 emissions per construction cost (intensity)*1 25% 28.9% 26%

Environment DivisionAt construction stage: Total CO2 emissions*1 51% 44.7% 51%

At building operation stage: Design-build estimated CO2 emissions*1*2 38% 40.2% 39%

0

100

200

300

0100200300

108

8888

122

226209

9292

2014 2015 2016

13 12

113

231

106106

2017

12

124

245

110110

2018

11

148

261

102102

11

250250

186 195 211 195196

250

■Of�ce ■Construction site (civil engineering) ■Construction site (building)CO2 emissions(103t-CO2)

Reduction targets of CO2 emissions at the construction stage

(vs FY1990 level)

CO2 emissionsat the

construction stage

FY2030- 62%

FY2018Results

FY2050- 80%

FY1990 criterion453 (10³tCO2)

● CO2 emission intensity(kg-CO2 / mil. yen)

(FY)

0

20

40

60

0

150

100

50 40

2014 2015 201625

34

202017

84

46 1751

32 36

56

201824

2030

10

■Calculated value based on 1990 criterion■Predicted CO2 emissions

・Predicted CO2 emissions increased as target calculation range expanded from FY2016.

CO2 emissions(103t-CO2)

(FY)

Emissions per unit �oor area ● (kg-CO2 / year.m2)

40

20

0

37.5 41.7

2014 2015 2016

38.9

201740.2

48.1

2018 2019 (FY)

● Predicted CO2 reduction percentage（%）

2018Targetvalue38.0

Targetvalue39.0

● Promoting Green Infrastructure* as a Measure for Adapting to Climate Change

In the Shinagawa Season Terrace, a multi-purpose building that makes effective use of the upper part of the Water Reclamation Center, we built a reservoir for rainwater in the basement of the Center, in order to temporarily store water during the early stages of heavy rain, to prevent polluted water from flowing directly into the sea. The building demonstrates other multifaceted functions of green structures, including the creation of a wide open green space situated on artificial ground constructed above the ground, reduction of the heat island effect on the city by using this greenery to cool wind from the Tokyo Bay before sending it into the city area, and conservation of biodiversity by fostering new ecosystems through waterfront creation using rainwater.

Shinagawa Season TerraceGreen Promenade

Underground sewerage facilities of the Shinagawa Season Terrace (reservoir for rainwater)

(Key Performance Indicators)



For Realization of a Recycling Society (Risks and Opportunities)

Most of the materials used for the construction business are limited natural resources. Japan imports most of the raw materials.

Therefore, when the supply of materials becomes unstable due to a disaster caused by an extreme climate, it may create a signifi-

cant risk to business continuity. By promoting green procurement, Taisei Corporation aims to achieve a recycling society by con-

sidering the life cycle of selecting materials from the building design stage and providing technology that enables buildings to last

many years.


● Recycling and Effective Utilization of Resources Based on Green Procurement GuidelineIn 2001, the Taisei Corporation Green Procurement Guideline was

established and put into effect to promote the use of materials, equip-

ment and building methods that have small environmental burden during

the design, construction, operation and demolition of structures.

By referring to and reflecting the content of the Green Purchase Law

(the law concerning the promotion of procurement of eco-friendly goods

and services by the state and other entities), we review the subject

items every year. In FY2018, 94 items were included in the guideline.

Companywide application of the guideline could achieve not only the

recycling of resources but also energy-saving, a reduction of CO2

emissions, resource-saving, non-use of toxic substances and the

preservation of the natural environment. Through CSR procurement, we

are also promoting environmental consideration for procurement when

we work with suppliers.

● Recycling of Waste PlasticWaste plastic such as building and wrapping materials generated in the construction process

are strictly sorted for specialist waste disposers to recycle properly. (Large forming material

may be melted with a solution to reduce the volume to be treated. In addition, we are imple-

menting measures to utilize waste plastic by combining it with waste wood products and

creating an artificial recycled wood product.) Taisei Corporation supports the Plastic Smart Campaign by the Ministry of the Environment.

Adoption of Green Procurement Item(Construction design phase: non-consolidated)

Details ofadopted items

Facilities 60%●LED light●Automatic faucet●Western-style toilet

(water-saving type)●Automatic cleaning

equipment andbuilt-in urinal(water-saving type)

●Energy-savingelectric toilet seat

●Highly efficienttransformer, etc.

Other items 10%●Greening of roofs,etc.

●Recycled steel materials

●High-strengthconcrete, etc.

Structural items12%

Constructionitems 18%

●Ceramic tile●Heat insulating and door●Recycled vinyl flooring, etc.


For Realization of a Recycling Oriented Society

Taisei Corporation aims to

achieve a sustainable,

resource recycling society

within TAISEI Green Target

2050.

Taisei Corporation is now

conducting resource recy-

cling initiatives, including

waste plastics, in coopera-

tion with our supply chains

and customers.


• To realize a sustainable, resource recycling society

Recycling resources

Dissolving Styrofoam (foam material)

Sorting resources

Sorting and collection of waste plastics

Reusing resources

Using recycled wood•Louver (photograph)•Walking decks, etc.

Aim for final disposal rateof construction waste of

0%

Provide collection vehicles with ef�cient collection routes

Transport wastes to recycling plants, etc.

Travel around construction sites to collect wastes

Promote material recycling as raw

materials for products


● Recycling and Effective Utilization ofResources at Worksites

The emission volume of construction waste varies depending

on the scale and type of construction. In general, the bigger

the construction is, the larger the amount of waste becomes.

However, most of the waste is strictly sorted and transported

by specialists. Then, it is treated by removing dirt which

became attached after construc-tion and recycled. The ratio

of the final disposal of the emitted waste, such as disposal at

the final waste disposal site, is less than 4%.

Currently, we operate a “routine collection system” for

many types of waste, including waste plastics at our con-

struction sites in Japan. In the future, we will continue to

analyze data to obtain an efficient collection frequency as well

as mechanisms for collaboration between construction sites,

and stabilize the loading ratios of collection vehicles. We are

also considering promoting nationwide deployment and aim

to achieve a final disposal rate of 0% for construction waste

in 2050.


For Realization of a Recycling Oriented Society

Quantity of Construction Waste (Non-Consolidated)

（103t）

0

500

1,000

1,500

2,000

2,500

3,000

2014

2,260（1,418）2,260

（1,418）

95（71）

2,355（1,489）

2015

2,211（1,432）2,211

（1,432）

73（71）

2,284（1,503）

2016

2,320（1,599）2,320（1,599）

95（59）

2,415（1,658）

2017

2,528（1,539）2,528（1,539）

1,961（921）1,961（921）

116（105）

2,644（1,644）

2,020（973）

2018

60（52）

(FY)

( ) is the quantity excluding polluted mud and specially controlled industrial waste■Quantity recycled ■Quantity of �nal disposal

The flow of waste collection

Construction Waste Treatment Breakdown (Non-Consolidated) (103t)

Am

ount

gen

erat

ed

973

Con

trac

ted

dis

pos

al a

mou

nt

909 Direct �nal disposal amount 52

Intermediate treatment

amount857

Intermediate treatment residue 36 Final

disposal amount

88

Recycled amount885

Sale of valuable materials, wide-area certi�cation,

self-disposal, etc.64

(excluding sludge and specially controlled industrial waste)

● Third-party assured values (independent assurance report on p.15) are indicated with the mark.● KPI result is not only calculated by the waste treatment breakdown above but by other non attributable factors.


Promotion of recycling construction waste: Final disposal rate 3.7% 3.4% 3.4% Environment Division


Emissions and Recycling Rate by Construction Waste Category (Non-Consolidated) Unit: 103t

Construction waste Civilengineering

Building constructionTotal Recycling

rateNewconstruction Demolition Subtotal

Concrete remnants 157 197 168 365 522 99.9%Asphalt - concrete remnants 62 42 8 50 112 100.0%

Construction site sludge 721 279 6 284 1,006 —

Mixed waste 44 34 6 40 84 43.1%Wood scrap 14 8 7 15 29 95.0%Metal scrap 2 29 26 55 57 99.4%Miscellaneous 108 76 26 102 210 79.3%Total 1,108 666 247 913 2,020 —

Calculation Standard for Quantity of Construction Waste

Objective Item Calculation Method & Standard

Material-flow

related

[Civil Engineering and Building Construction (sites), and factories] Calculation of construction and industrial waste emissions

Construction by-products (waste and valuable resources) emitted at the sites of the Taisei Group’s individual construction projects, joint venture construction for which Taisei Group is the representative, and factories owned by Taisei Group.

Resourcerecycling

Results for adoption of green procurement items

Calculated the quantities based on the design specifications by Eco Sheet CASBEE introduced to buildings designed by Taisei Corporation

Final disposal rate (%)

(final disposal quantity / quantity arising) × 100 (excluding construction sludge and quantities not attributable to Taisei Corporation)Recycle rate = 100 - final disposal rate


For Realization of a Nature Co-Existing Society (Risks and Opportunities)

There is always a concern that construction would significantly affect the surrounding environment including nature. During the

planning phase, we extract risks such as the violation of environmental laws and regulations as well as opportunities including

chances to add value. We pay attention to biodiversity until the operation and management support phase after construction, and

provide solutions to create a rich environment to customers. We will contribute to the achievement of a society that cohabits with

nature by properly evaluating the value of natural resources to utilize for the development of infrastructure and buildings and

reducing the influence of construction.

● Biodiversity-Conscious Research, Planning, Construction and MonitoringWith Ecological Planning, our proprietary environment planning technology, Taisei Corporation contributes to the realization of a

nature co-existing society by analyzing the natural environment of construction sites and surroundings, carrying out planning based

on predictive estimates and monitoring the construction and post-construction status. In addition, based on our long years of

experience, we developed “Ikimono Concierge,” a tool that conducts a predictive estimation of animals that could be introduced to

a planned site and “Mori Concierge,” a tool to select plants suitable for the environment of a planned site. Using these tools, we

provide high-quality proposals that contribute to cohabitation with nature.

● Biodiversity Conservation and Creation ActivitiesIn the construction of the Sapporo Dome, which was completed in 2001, we used our

proprietary ecological planning technology from the planning stage.

In order to verify that the environment is actually inhabited by various types of living

creatures, we have conducted long-term monitoring surveys based on the number of

species of birds, butterflies, dragonflies, and other creatures, from the planning stage in

1997 to the completion of construction in 2001, at both 3 years and 10 years after

construction, and also in the present day.

Knowledge and concrete results accumulated during this process have been used

for the development of the biodiversity communication tools, the “Ikimono (living crea-

tures) Concierge,” and have contributed to the conservation and sustainable use of

natural resources through various environmental awareness activities conducted by

Sapporo Dome Co., Ltd.

● Declaration of Biodiversity PreservationTaisei Corporation has agreed to the Declaration of Biodiversity by Keidanren, and formulated the “Declaration of on

Biodi-versity Preservation” in September 2010, in order to clarify its corporate stance on the conservation and creation of

biodiversity.



For Realization of a Nature Co-Existing Society

1997 Before

construction

2310

5

188

15

3835

30

2001 Year of

completion

2015 15th year after

completionSapporo Dome

WEB �https://www.taisei.co.jp/about_us/corp/rinen/policys.html

Number of species confirmed by biological monitoring

■ Number of species of birds

■ Number of species of butterflies

■ Number of species of dragonflies

Taisei


● Consideration of Biodiversity for ProposalDuring civil engineering construction, there are many chances to face the natural environ-

ment. Therefore, we propose measures to protect endangered animals and plants and avoid

having an influence on them considering biodiversity. As for construction, our biodiversity

evaluation tools such as “IKIMONO-Concierge®” and “MORI-Concierge®” are effectively used

for greening plans at construction sites or for redevelopment projects.

● Implementation of Activities to Contribute to Environment and Society in Cooperation with Various Stakeholders

The direction of the measures for biodiversity is presented with the Environmental Policy and Declaration of Biodiversity Preserva-

tion. We are proceeding with company-wide activities to reduce environmental impact by utilizing our own Biodiversity Guideline.

Not only for business-related considerations for biodiversity but also as nature and environmental education program for employ-

ees and their families including those of group companies, we have been conducting volunteer activities to create nest boxes

for dormice and Tokyo Greenship Action, which is nature conservation program hosted by Tokyo in cooperation with the Animal

Pathway Research Society and Animal-pathway & Wildlife Association over 10 years. Moreover, since 2011, we have been

supporting REDD+project to preserve forests in the Philippines and Kamaishi Forest Owner’s Association to regenerate forests

affected by the Great East Japan Earthquake and forest fire.

● The Taisei Group Environmental Volunteers

1) Making dormouse nest boxes Since 2004, Taisei Corporation has participated in

the Animal Pathway (bridges for tree-dwelling

rodents) Research Society, and has supported

ecosystem conservation activities for tree-dwelling

rodents, such as the dormouse, through develop-

ment and facilities for animal pathways and moni-

toring. As part of these activities, our group em-

ployees and their families participate every year in

volunteer activities to construct dormouse nest boxes. In our activities held in FY2018,

we completed 180 nest boxes, and donated these boxes to the Dormouse Museum of

KEEP, Inc.

We have conducted this environmental volunteering activity every year, with partici-

pants working to build a total of 2,945 dormouse nest boxes, thus far.

2) TAISEI 1 Ton CLUB Since 2010, we have conducted this environmental contribution activity a total of seven

times, under the theme of “simultaneously achieving carbon offsets at the Company and

in the homes of employees.”

In 2012 and 2015, we supported the Kamaishi Forest Owner’s Association, which

manages the mountain forests of Unosumai District. On May 9, 2017, a large-scale wild

fire occurred in the District due to a suspicious fire, resulting in the burning of 413 hect-

ares as well as heavy damage. Accordingly, carrying on from FY2017, we continued our

support in FY2018 through fundraising to donate the cost of planting saplings for the

reforestation of Kamaishi Forest. We were also involved in the construction of Kamaishi

Unosumai Memorial Stadium, where trees that had been felled by the fire in Unosumai

District were used to make wooden seats, public toilets, benches and louvers sunshades.

Volunteer activities to make dormouse nest boxes

IKIMONO-Concierge



Implementation of proposals that consider biodiversity: Number of proposals 30 cases 35 cases 30 cases Environment Division


For Realization of a Nature Co-Existing Society

Dormouse nest boxes made in volunteer activities:

Employees participating in the “TAISEI 1 ton CLUB”, FY2018:

2,945

1,677

Status of saplings for donation for planting


For Realization of a Safety Secured Society (Risks and Opportunities)

Environment pollution caused by construction has a significant impact on the surroundings and society. Compliance with environ-

mental laws and regulations is always one of the most important environmental issues. We keep contributing to the reduction of

environmental risks of society by promoting the proper management of construction waste, the development of new technologies

and measures to cope with the regulations for soil pollution which are expected to become stricter than now.




Zero environmental accidents (Implementation of management proce-dure based on “Operation Manual for Priority Environmental Issues” )

0 cases 0 cases 0 cases Safety Administration Division


For Realization of a Safety Secured Society

● Risk Measures at WorksitesWith a worksite environment patrol, the Environment Depart-

ment of the head office and branches conduct an internal audit

to check the observance of the environment law at worksites.

As for the findings, we establish corrective and preventative

measures for continuous improvement. At a worksite, based

on the Environment Management manual, we provide environ-

mental education to our employees and specialized contrac-

tors. By sharing the cases that could result in an environmental

accident, issuing notifications of the proper management of

toxic substances such as asbestos and PCB, and reinforcing

adequate control and treatment of polluted soil, we have been

raising awareness of the importance of environment manage-

ment and the prevention of environment-related accidents. Regarding the management of water resources, Taisei Corporation is

working to “prevent water pollution caused by construction wastewater, etc.” as a management priority. In FY2018, there were no

environmental accidents or violations of environmental laws and regulations.

This technology has attracted attention as the first of its kind in the world, receiving many prestigious awards, including the Special Award of the 32nd (FY2018) Fuji Sankei Business Eye Cutting Edge Technology Grand Awards.

● Developing new technologies to realize a society that ensures safety1,4-dioxane is a chemical substance that is commonly used as a solvent in the chemical

industry, but it is now subject to water pollution regulations. However, since this sub-

stance does not decompose easily, the environmental burden and cost required for its

handling pose major issues. We searched for 1,4-dioxane-degrading bacterium from vari-

ous environments, and found a new bacterium to degrade 1,4-dioxane effectively. We

have established a water treatment process using the degrading bacterium, and com-

pleted verification using polluted groundwater and factory wastewater.

● Complaint to Worksites and Handling ThereofWe take proper measures regarding environment-related

complaints addressed to a workplace, make a record and

report using a communication sheet based on an EMS

procedure and share the information horizontally among

concerned departments or within the entire company as

required. In addition, we are properly handling comments

given by citizen groups.

Percentage of complaint items

Noise 38%

Water pollution 14%

Others 23%

House damage 3%

Radio disturbances 3%

Dust 5% Vibrations 9%

Traf�c obstruction 5%

Foul odors 2%

Percentage by complaint item

Type Measure (Example)

Noise

In response to a complaint about the noise generated with machinery work such as tunnel drilling or that at the temporary yard for crushed stone, we implemented noise-proof measures and arranged working hours.

Water pollution

Hydraulic oil was discharged to the drains of a factory. We eliminated the oil using oil absorption material, and installed polluted water treatment equipment for the water discharged to the drains.

Vibration In response to a complaint about the vibration caused by drilling, we slowed down the speed of heavy machinery.

DustIn response to a complaint about the dirt that came off from construction vehicles on a public road, we cleaned the road and tires of the construction vehicles.



Material Flow and Third-Party Assurance

■Taisei Corporation■7 Main Group Companies

78 95

1

32

71511

2

12

1

12

Diesel

Kerosene

GasolineHeavy oil

Fossil fuel (103KL)

Construction sites (sites)

Factories

Of�ces

Electricity (106kWh)

Ready mixed concrete3,375

(Non-consolidated)

Aggregates2,038

Cement695

Steel 414

Others 18

Main construction materials

(103t)

Taisei Corporation1,436

7 Main Group Companies 115

Water (103m3)

OUTPUT(Quantity discharged)

(Consumption)

INPUT

25011 7

27

66179

2520

1

79

57

■Taisei Corporation■7 Main Group Companies


7 Main Group Companies109


7 Main Group Companies266

Construction sites(sites)

Factories

CO2

(103t-CO2)

Of�ces

Scope1

Scope2

Scope3

CO2 by Scope(103t-CO2)

Construction waste(103t)

Water(103m3)

Civil Engineering BuildingConstruction

Offices

・ Organizations covered: the Taisei Group (Taisei Corporation, TAISEI ROTEC CORPORATION, Taisei-Yuraku Real Estate Co., Ltd., TAISEI U-LEC CO., LTD., TAISEI SETSUBI CO., LTD., TAISEI HOUSING CORPORATION, SEIWA RENEWAL WORKS CO., LTD., and J-FAST Co., Ltd.), which are all within Japan only. Environmental data cover more than 90% of the sales made by the entire Taisei Group.

・ Calculation standard: Calculated based on in-house standards and the Taisei Group’s environmental data calculation manual for the management of environmental information, complying with the Act on the Rational Use of Energy, the Act on Promotion of Global Warming Measures, the Waste Disposal and Public Cleansing Act, and the GHG Protocol, etc. In calculation of CO2 emissions, Taisei Corporation uses the value of the fuel consumption of the Japan Construction Mechanization Association, from which the fat content is excluded. Energy-related: Fossil fuels (heavy oil, diesel, gasoline, kerosene), electrical power, city gas, and LPG consumption and their energy-equivalent values.

● Third-party assured values (independent assurance report on p.15) are indicated with the 　mark.

Calculation Standard for Material Flow Data

objective Item Calculation Method & Standard

Classification by business type Classification into civil engineering and building construction (sites), offices (excluding development projects and others), and factories

CO2 emissions Scope classification Scope 1: CO2 emissions associated with the combustion of fossil fuelsScope 2: Indirect CO2 emissions associated with the use of electricity, steam, and chilled and hot waterScope 3: CO2 emissions associated with the transport of construction waste off construction sites and the outward and return transport of soil from construction (off-site emissions)

CO2 emissions CO2 emission coefficient: Calculated using the emission coefficient in accordance with the Act to Rationalize the Use of Diesel, Heavy Oil, and Energy and the Act on Promotion of Global Warming Countermeasures. For offices, the actual emission coefficient for FY2017 according to the electrical power company is used.

Electrical power: Calculated using the 2017 emission coefficient on the user end announced by the Japan Business Federation (before reflecting the Kyoto credit), 0.495t-CO2/MWh.

City gas: Calculated using the standard calorific value of the gas supply company and the emission coefficient of the Act on Promotion of Global Warming Countermeasures.

[Offices and Factories] Energy-related and water consumption

The annual quantities purchased and used by the offices and factories of the Taisei Group are calculated in monthly units.

[Civil Engineering and Building Construction (sites)] Energy-related and water consumption

Calculated for each company based on the Taisei Group environmental data manual. Consumption in a two-month period in FY2018 is sampled at 190 construction sites to calculate the consumption per unit of construction turnover (basic unit). Annual consumption is calculated by multiplying this basic unit by the construction turnover for the year. For civil engineering, this calculation is performed for each construction type.

[Civil Engineering and Building Construction (sites)] Calculation of the main construction materials and other materials (concrete formworks and alternative formworks) purchased.

The quantities of the main construction materials and other materials purchased directly through individual construction of Taisei Corporation and joint venture construction for which Taisei Corporation is the representative. The same calculation method applies to the consumption of concrete formworks and alternative formworks.

[Civil engineering, Building Construction (sites), and factories] Calculation of construction and industrial waste emissions

Construction by-products (waste and valuable resources) emitted at the sites of the Taisei Group individual construction projects, joint venture construction for which Taisei Group is the representative, and factories owned by Taisei Group.

Mat

eria

l flow

-rel

ated



Taisei Corporation Material Flow

INPUT Units FY 2014 FY 2015 FY 2016 FY 2017 FY 2018

Total energy use 109MJ 3.26 3.57 3.67 3.90 4.14

　Construction Site (building) 109MJ 1.34 1.40 1.61 1.72 1.61

　Construction Site (civil engineering) 109MJ 1.67 1.93 1.81 1.95 2.31

　Offices 109MJ 0.25 0.24 0.24 0.23 0.22

Total fossil fuel use 103kL 55 58 61.9 68.9 79.0

　Diesel 103kL 54 57 60.0 66.3 77.8

　Kerosene 103kL 0.7 0.6 1.4 2.0 0.5

　Heavy oil 103kL 0.1 0.2 0.5 0.6 0.8

Total electricity 106kWh 115 134 129 125 111

　Construction Site (building) 106kWh 40 33 35 49 43

　Construction Site (civil engineering) 106kWh 56 82 76 60 52

　Offices 106kWh 19 18 18 16 15

City gas (offices) 103m3 103 91 94 227 140

Total quantity of the main construction materials (following 6 items) 103t 10,472 7,638 7,738 6,811 6,540

　Ready mixed concrete 103t 8,249 4,321 4,833 4,375 3,375

　Aggregates (gravel, crushed stone, etc.) 103t 1,095 2,411 1,979 1,679 2,038

　Cement 103t 326 190 262 283 695

　Steel 103t 765 690 638 446 414

　Timber 103t 27 21 15 24 16

　Asphalt 103t 10 2 11 4 2

　(of which the green procurement quantity)* 103t 2,946 1,152 681 995 1,253

Total concrete formwork use 103m2 5,085 3,473 3,042 4,082 3,464

　Tropical plywood formwork 103m2 3,219 2,514 1,801 2,850 1,883

　Alternative formwork 103m2 1,866 959 1,241 1,233 1,581

　Alternative formwork percentage % 36.7 27.6 40.8 30.2 45.6

Water (consumption) 103m3 1,383 1,970 2,338 1,691 1,436

OUTPUT Units FY 2014 FY 2015 FY 2016 FY 2017 FY 2018

Total CO2 emissions 103t-CO2 209 226 231 245 261

　Construction Site (building) 103t-CO2 88 92 106 110 102

　Construction Site (civil engineering) 103t-CO2 108 122 113 124 148

　Offices 103t-CO2 13 12 12 11 11


　Scope1 103t-CO2 124 128 138 151 179

　Scope2 103t-CO2 67 76 71 67 57

　Scope3 103t-CO2 18 22 22 27 25

NOX t 931 989 1,040 1,151 1,345

SOX t 139 148 158 175 205

Quantity of Chlorofluorocarbon and halon recovered t 7 11 18 12 15

Construction waste 103t 2,355 2,284 2,415 2,644 2,020

　Quantity recycled and given intermediate processing 103t 2,312 2,261 2,372 2,609 1,961

　Quantity of direct final disposal 103t 43 22 43 20 60

　(of which, asbestos quantity disposed) 103t 5 8 11 8 5

Water (discharged) 103m3 1,839 3,003 8,172 4,701 4,483

� Third-party assured values are indicated with the mark

TAISEI ROTEC CORPORATION91

TAISEI U-LEC CO., LTD.5

Other 5Main GroupCompanies4

グループ全体340

Whole Group361

■7 Main Group Companies100

■Taisei Corporation　261

●��CO2 Emissions of the Taisei Group (FY2018) Units:103t-CO2

■Taisei Corporation　2,020

Whole Group2,286

■7 Main GroupCompanies266

TAISEI ROTEC CORPORATION176

TAISEI U-LEC CO., LTD.67

Other 5Main GroupCompanies23

●��Construction Waste Amount of the Taisei Group (FY2018) Units:103t



Material Flow for Group Companies

INPUT Units FY 2014 FY 2015 FY 2016 FY 2017 FY 2018

Total energy use 109MJ 1.91 1.73 1.61 1.53 1.62

　Sites (construction sites) 109MJ 0.42 0.40 0.37 0.29 0.39

　Factories 109MJ 1.33 1.19 1.10 1.12 1.10

　Offices 109MJ 0.16 0.14 0.14 0.13 0.12

Total fossil fuel use 103kL 35 30 27 25 26

　Diesel 103kL 15 12 11 9 12

　Kerosene 103kL 3 3 2 2 2

　Heavy oil 103kL 16 14 12 12 11

　Gasoline 103kL 2 2 2 2 2

Total electricity use 106kWh 46 44 42 41 40

　Sites (construction sites) 106kWh 1 1 1 1 1

　Factories 106kWh 36 35 34 33 33

　Offices 106kWh 9 8 7 7 7

City gas 103m3 2,592 2,888 3,622 3,794 4,628

LPG t 92 58 92 63 378

Water (consumption) 103m3 142 137 132 153 115

OUTPUT Units FY 2014 FY 2015 FY 2016 FY 2017 FY 2018


　Sites (construction sites) 103t-CO2 29 27 26 19 27

　Factories 103t-CO2 85 75 67 68 66

　Offices 103t-CO2 10 8 8 7 7

Total CO2 emissions 103t-CO2 — — 101 95 100

　Scope1 103t-CO2 — — 77 73 79

　Scope2 103t-CO2 — — 23 21 20

　Scope3 103t-CO2 — — 2 1 1

NOX t 325 277 249 211 257

SOX t 148 128 109 106 107

Quantity of Chlorofluorocarbon and halon recovered t 1 2 2 2 3

Total industrial waste emissions 103t 321 391 352 259 266

　Quantity recycled 103t 312 365 333 248 256

　Final disposal quantity 103t 9 26 19 11 10

Water (quantity discharged) 103m3 142 137 121 143 109

� Third-party assured values are indicated with the mark

Over the past five years, we have standardized and manual-

ized the method of collecting and aggregating environmental

data such as the quantity of energy consumed, the quantity of

CO2 emissions and the volume of industrial waste for the 7

main group companies participating in the Taisei Group

Environmental Promotion Conference. In FY2018, continuing

from the previous year, the 7 main group companies received

third-party assurance for their actual performance data.

Among the group companies, TAISEI ROTEC CORPORA-

TION, TAISEI U-LEC CO., LTD., TAISEI SETSUBI CO., LTD.

and J-FAST Co., Ltd. were inspected by auditors visiting their

head offices, major offices and factories.

Third-party assurance not only guarantees the data reliabil-

ity but also leads to a review and improvement of the man-

agement structure and initiatives of each group company.

Third-party Assurance of Environmental Data within the Taisei Group

*Usage of green procurement items in the specifications of major construction materials● Data is rounded off; therefore, the total value may not equal the sum of the parts. ● Third-party assured values are indicated with the mark.

For calculation standards other than the material flow calculation standard described above, please refer to pp. 3, 4 and 8.

Item NOx and SOx emissions

Calculation Method & Standard

Calculation of NOx and SOx emissions originating from diesel, heavy oil, and kerosene of the Taisei Group. Calculated using the emission coefficient of the Architectural Institute of Japan’s “Guide to Building LCA - Evaluation Tool for Measures against Global Warming, Resource Consumption, and Waste - Revised Version.”

Item[Civil Engineering and Building Construction (sites)] Calculation of chlorofluorocarbons and halon recovered.


Recovered quantity of chlorofluorocarbon and halon processing commissioned by the Taisei Group.

Item[Civil Engineering and Building Construction (sites)] Calculation of construction soil emissions


Surplus construction soil removed from construction sites of Taisei Corporation.

● Calculation Standard for Material Flow



Environmental Accounting

● Economic Effect Associated with Environmental Conservation Measures Units: million yen

●��Environmental Research and Development Cost Ratio

0

10

20

30

2014 2015

17.2

2016

14.8

2017

8.9 7.0

2018

5.9

● Environmental R&D cost / total R&D cost(%)

(FY)

●��Environmental Impact Ratio (only derived from Taisei Corporation)

●��Environmental Efficiency

0

10

20

40

30

2014 2015

21.0

2016

16.7

2017

7.6 16.2

39.8

2018

● Direct �nal disposal quantity / construction amount(kg/million yen)

(FY)0

2

4

6

2014 2015

5.5

2016

5.2

2017

5.0 5.1 5.0

2018

● Sales / CO2 emissions (construction + of�ce)(million yen / t-CO2)

(FY)

● Data is rounded off; therefore, the total value may not equal the sum of the parts.

Classification Details of main initiatives

FY 2018

Investment amount Cost

TotalRatio ofprevious

year

Civilengineering Building Offices Total

Ratio ofprevious

year

1. Cost in business areas — 12,175 17,831 52 30,058 5,072

（1） Pollution prevention cost● Cost of temporary works on sites to prevent air pollution,

water contamination, noise, vibration, etc.— 0 0 14 14 –0

（2） Global environmental conservation cost

● Cost of recovery of CFC and halon, green electricity procurement cost

— 0 74 0 74 18

（3） Resource recycling cost● Waste processing cost on site, resource recycling cost,

asbestos and PCBs recovery and processing cost— 12,175 17,757 38 29,970 5,684

2. Upstream and downstream cost

● Personnel cost and management cost for environmentally friendly design and engineering

— 0 0 1,758 1,758 –521

3. Administration cost● Personnel cost, education cost, and inspection cost for

EMS, greening around construction sites, cooperation

communities, etc.— 0 0 1,336 1,336 134

4. Research and development cost

● Personnel cost and management cost for environmental research and development (includes biodiversity conservation related cost of 26 mil. yen)

15 10 0 0 2,029 2,029 550

5. Social activity cost ● Donation to environmental NGOs, etc. — 0 0 10 10 7

6. Environmental remediation cost

● Soil survey and decontamination cost for real estate for sale by the Company, cost of land subsidence, and repair of roads and other neighboring repairs, etc.

— 0 0 2 2 –4

Total 15 10 12,175 17,831 5,186 35,192 5,867

● Environmental Conservation Cost Units: million yen

Economic Effect Associated with Environmental Conservation Measures Amount

Economic Effect Associated withEnvironmental Conservation Measures (substantial effect)

Earnings ● Recycling of waste produced by the main business activities 1,136

Cost reduction

● Reduction in office energy cost due to energy efficiency 19

● Reduction in construction site energy cost –576

● Reduction in waste processing cost associated with resource conservation and recycling –6,434

Economic Effect Associated withEnvironmental Conservation Measures (estimated effect) Reduction of environmental impact converted to monetary amount 260



Independent Assurance Report

realization of a sustainable and environmentally …...the taisei group environmental report 2019 2...

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