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
The Taisei Group Environmental Report 2019 2
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 safety is ensured
Aim to provide valuewith zero
environmental risk
Safety Secured Society
Aim for final disposal rateof construction waste of
0%
The Taisei Group Environmental Report 2019 3
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%
Recycling Oriented Society
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 Society
Proper management ofconstruction waste,
construction waste water,polluted soil,
harmful and / or chemicalsubstances and
radioactive 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
ISO26000 • Environment
The Taisei Group Environmental Report 2019 4
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.
ISO26000 • Environment
● CO2 Emission Volume by Scope (Non-Consolidated)
The Taisei Group Environmental Report 2019 5
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 operation stage and reduction percentage (Non-consolidated)
■ Reducing Environmental Impact at 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 categories related 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)
ISO26000 • Environment
The Taisei Group Environmental Report 2019 6
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.
Major Results in FY2018
● 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 and built-in urinal (water-saving type)●Energy-saving electric toilet seat●Highly efficient transformer, etc.
Other items 10%●Greening of roofs,etc.
●Recycled steel materials●High-strength concrete, etc.
Structural items12%
Constructionitems 18%
●Ceramic tile●Heat insulating and door●Recycled vinyl flooring, etc.
ISO26000 • Environment
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.
Recycling Oriented Society
• 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
The Taisei Group Environmental Report 2019 7
● Recycling and Effective Utilization of Resources 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.
ISO26000 • Environment
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.
(Non-consolidation) FY2018 Targets FY2018 Results FY2019 Targets Department responsible for promotion
Promotion of recycling construction waste: Final disposal rate 3.7% 3.4% 3.4% Environment Division
(Key Performance Indicators)
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
The Taisei Group Environmental Report 2019 8
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 TAISEI on Biodi-
versity Preservation” in September 2010, in order to clarify its corporate stance on the conservation and creation of biodiversity.
Major Results in FY2018
ISO26000 • Environment
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
The Taisei Group Environmental Report 2019 9
● 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
ISO26000 • Environment
(Non-consolidation) FY2018 Targets FY2018 Results FY2019 Targets Department responsible for promotion
Implementation of proposals that consider biodiversity: Number of proposals 30 cases 35 cases 30 cases Environment Division
(Key Performance Indicators)
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
The Taisei Group Environmental Report 2019 10
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.
Major Results in FY2018
(Key Performance Indicators)
(Non-consolidation) FY2018 Targets FY2018 Results FY2019 Targets Department responsible for promotion
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
ISO26000 • Environment
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.
The Taisei Group Environmental Report 2019 11
ISO26000 • Environment
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
Taisei Corporation4,483
7 Main Group Companies109
Taisei Corporation2,020
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
The Taisei Group Environmental Report 2019 12
ISO26000 • Environment
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
Total CO2 emissions 103t-CO2 209 226 231 245 261
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
The Taisei Group Environmental Report 2019 13
ISO26000 • Environment
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
Total CO2 emissions 103t-CO2 124 111 101 95 100
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.
Calculation Method & Standard
Recovered quantity of chlorofluorocarbon and halon processing commissioned by the Taisei Group.
Item[Civil Engineering and Building Construction (sites)] Calculation of construction soil emissions
Calculation Method & Standard
Surplus construction soil removed from construction sites of Taisei Corporation.
● Calculation Standard for Material Flow
The Taisei Group Environmental Report 2019 14
ISO26000 • Environment
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