ISO26000

Environment

Realization of a Sustainable andEnvironmentally Friendly Society
Based on the “Environmental Policy” we work to reduce various environmental risks and impact andcreate a sustainable social infrastructure.

■ Promoting Environmental Management
Under the group philosophy “To Create a Vibrant Environment for All Members of Society,” Taisei Corporation, through its
construction activities, strives for development of high-quality social infrastructure and improvement of the living environment inharmony with nature.
Moreover, considering the realization of a sustainable society to be the origin of environmental management, Taisei Corporationand its Group companies actively strive for an “environmentally friendly society,” while setting medium- to long-term targets andsingle-year targets in line with the Environmental Policy and pursuing environmentally friendly activities to achieve those targets.
Single-year environmental targets are set each year on a company-wide scale, based on our medium- to long-term targets.
Specifically, Taisei Corporation operates an environmental management system (EMS) in compliance with ISO1 4 0 0 1:2 0 1 5, andidentifies risks and opportunities related to environmental problems taking into account compliance with environmental laws andregulations, various issues in the construction business and social demands and expectations related to climate change and other issues.
We pursue environmental activities while implementing a PDCA (plan-do-check-act) cycle with a view to achieving our planned
environmental targets.
Realizing a Sustainable
Environmentally Friendly Society

Low Carbon
Society

Recycling
Oriented Society

Environmental Policy

Nature Co-existingSociety

A Society Where
Safety is Ensured

TGT 2050
Fiscal Year Environmental Targets / Plan

* TGT 2050 … TAISEI Green Target 2050

■ TAISEI Green Target 2050
Taisei Corporation revised its medium- to long-term targets in 2018 in light of the most recent developments such as the effectuation of
the Paris Agreement and the adoption of the SDGs, which are attracting keen interest worldwide. Based on our Environmental Policy,
we aim to realize a sustainable environmentally friendly society, which is one of the Taisei Group’s material issues (materiality).

TAISEI Green Target 2050
Environmental Targets of Taisei Corporation by 2050

Low Carbon
Society●

To realize a society withno climate change risk
CO2 emissions*
Aim for-80%

Recycling Oriented
Society●

To realize a sustainable,
resource recycling society

Aim for final disposal rateof construction waste of0%

Nature Co-existingSociety●

To create a society where
people co-exist with nature

Minimizing impact
on natural capital

A Society Where
Safety is Ensured●

To realize a society where
safety is ensured
Aim to provide value
with zeroenvironmental risk

2030 Targets
CO2 emissions atconstruction stage
Predicted CO2 emissions
at operation stage

-62%
-55%

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

The Taisei Group Environmental Report 20181

■ Fiscal Year Environmental Targets and Results
Taisei Corporation’s Fiscal Year environmental targets are set based on the Environmental
Policy and on medium- to long-term targets. Aiming to realize an environmentally friendly
society, we have set out methods for implementing company-wide measures in fourareas and numerical targets thereof in FY2018.
We have published the “Guide for Achieving Targets,” which explains in an easy-tounderstand manner how to calculate the amount of CO2 emissions, and provides
examples of specific initiatives, their effects and how they relate to achieving thosetargets. The guide is used to understanding and environmental awareness of employees
at all business sites that set out those targets.

“Guide for Achieving Targets”

FY2017 Results Against Environmental Targets and FY2018 Targets
FY2017

Environmentally
Conscious
Society

Implementation Measures

Management Indicators

FY2018 targets
Targets

Results-18％-28.4％-25％-47% or more

-48.4%-51%

At building operation stage *1
Predicted CO2 emissions ofdesign-build projects-37% or more

-48.1%-38%

Back-office departments *2
Energy consumption (Intensity)-17% or more

-20.5%-18%

Promotion of building
designs that consider
resource recycling

At building design stage
Number of green(environmentally conscious)
procurement items

9 per projector more9.5 per project

10 per projector morePromotion of recycling
construction waste

Final disposal rate

4.0% or less

3.2%

3.7% or less

KPI

At construction stage *1
CO2 emissions per construction cost(intensity)
KPI

At construction stage *1
Total CO2 emissions

Low Carbon Society
Reduction of CO2
emissions

Recycling Society

KPI

KPI

KPI

Society Coexistingwith Nature

Implementation of proposals thatconsider biodiversity

Number of proposals *30 or more

52

30 or more

Implementation of biodiversity
conservation activities
at construction stage

Number of implemented projectsーー

20 or more

0

0

KPI

Safety Secured Society

Proper management ofconstruction 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” )*1 Target base year : FY1990.
*2 Target base year : FY2010.
●KPI Key Performance Indicator

The Taisei Group Environmental Report 20182

ISO26000

Environment

Realization of a Sustainable and Environmentally Friendly Society : Low Carbon Society
CO2 Emissions by Business (Non-Consolidated)

Prediction of CO2 emissions in the building operation stage andreduction percentage (Non-consolidated)

CO2 emissions(103t-CO2)■Office ■Construction site (civil engineering) ■Construction site (building)CO2 emissions(103t-CO2)

300

15

250

200

13

CO2 emissions
at the 143
construction stage

209 12
108

226

122

12

231

88

92

FY2030
- 62%

124

113

234

100
92

Reduction targets of CO2 emissions
at the construction stage(vs FY1990 level)
245
234 FY2017
Results
11

106

FY2050
- 80%

150

0

0

36

32

46

50

40

29

25

2013

2014

56

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

84

34

51

20

2015

2016

60
40
20
46
24

2017 (FY)200・Predicted CO2 emissions increased as target calculation range expanded from FY2016.

FY1990 criterion
453 (10³tCO2)● CO2 emission intensity

38

100

110

■Calculated value based on 1990 criterion■Predicted CO2 emissions● Predicted CO2 reduction percentage（%）

0(kg-CO2 / mil. yen)

300

229

186

200

195

211

100

35.3

37.5

2013

2014

40

0

2013

2014

2015

2016

2017

41.7

38.9

2017
Target
value
37.0
48.1

2015

2016

2017

20

196

(FY)

CO2 emissions by scope (Non-consolidated)(10³t-CO2)

Scope3(upstream)

Scope1＋2

Scope3(downstream)

GHG protocol criteria*1

Category 1 – 8
2,100

207

Category 11 and 12
4,300

Targetvalue
38.0

2018 (FY)

Taisei Corporation calculates Scope 3 emissions for ten categories related
to its business.
By promoting energy saving and Zero Energy in buildings that we design,
we improve the reduction rates of predicted CO2 emissions at the stage ofbuilding operations. This helps reduce the CO2 emissions in Category 11 (useof products sold) in Scope 3 based on the GHG protocol criteria.

■ 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, seven items
including energy saving, rainwater use, and fuel-economical driving for heavy machinery andvehicles have been implemented as basic activities to be implemented at the construction sites.
Calculation Standards for CO2 Emissions

Prevention of
global warming

Material flow-related

Objective

Item

Calculation Method & Standard

Classification bybusiness typeClassification into civil engineering and building construction (sites), offices (excluding development projects and others),
and factories

CO2 emissions
Scope classification*2

Scope 1: CO2 emissions associated with the combustion of fossil fuels
Scope 2: Indirect CO2 emissions associated with the use of electricity, steam, and chilled and hot water
Scope 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 FY2016 according to the electrical
power company is used.
Calculated using the 2016 emission coefficient on the user end announced by the Federation of Electrical Power Industries of Japan
Electrical power:(before reflecting the Kyoto credit), 0.518t-CO2/MWh.
Calculated using the standard calorific value of the gas supply company and the emission coefficient of the Act on Promotion of Global
City gas:		
Warming Countermeasures.

Estimated CO2 emissions
and reduction rate in thebuilding operation stageCalculated using the “Energy Efficiency Plan” for each of 48 projects, each with a total floor area of 300 m2
or more and with a total area of about 1,170,000 m2, of Taisei Corporation building construction projects.

CO2 emissions andreduction rate in theconstruction stage

CO2 emissions at Taisei Corporation construction sites and percentage of CO2 emissions reduced from FY1990 emissions. In somecases, temporary or special construction that has a major effect on the date continuity has been excluded from the calculation.

・Energy Efficiency Plan: A plan that summarizes the measures for the efficient use of energy such as building thermal insulation, air conditioning facilities, etc., which is required to be submitted when
designing buildings with a total floor area of 300 m2 or more in accordance with the Act on the Rational Use of Energy.

FY2018 Targets

KPIs

At construction stage CO2 emissions per construction cost (intensity)

25% (compared with FY1990)

At construction stage Total CO2 emissions

51% (compared with FY1990)

At building operation stage Design-build estimated CO2 emissions*3

38% (compared with FY1990)

Environment Division*1 Global standard for calculation and reporting of Greenhouse Gas (GHG) emissions (URL: http://www.ghgprotocol.org/). *2 Calculation range criteria set by the Japan Federation of Construction Contractors.
*3 Predicted CO2 emissions at operation stage of design and construction projects (including popularization 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 E-12) are indicated with themark.

The Taisei Group Environmental Report 20183

Realization of a Sustainable and Environmentally Friendly Society : Recycling Oriented Society
Construction Waste Treatment Breakdown (Non-Consolidated)(103t)■Quantity recycled ■Quantity of final disposal( ) is the quantity excluding polluted mud and specially controlled industrial waste(excluding sludge and specially controlled industrial waste)

Sale of valuable materials,
wide-area certification,
self-disposal, etc.
104(103t)

3,000
2,500
2,000
1,500

2,606
（1,631）

1,000

2,260
（1,418）2,320（1,599）2,211（1,432）

Amount generated

2,695
2,644
（1,709）（1,644）
2,415
89
2,355
116
2,284
（1,658）（78）（1,489） （1,503）
（105）
95
95
73
（59）
（71）
（71）

2,528
（1,539）

1,644

500

Recycled amount
1,539

Contracted disposal amount

Quantity of Construction Waste (Non-Consolidated)

Intermediate
treatment
amount1,520
Intermediate
treatment
residue 85

1,540

0

2013

2014

2015

2016

Direct final disposal amount 20

2017 (FY)

Emissions and Recycling Rate by Construction Waste Category

Adoption of Green Procurement Items(Construction Design: Non-Consolidated)
Other items

Equipment items●Rooftop greening, etc.

● LED lighting

9%

Final
disposalamount105

Civil
engineering

Construction waste

fixtures● Automaticwater faucets
Structural items● Water-saving
14%● Recycled
toiletbowl
Breakdown ofsteel material● Automatic flushingspecified items● Ultra-high-strength
system andin theconcrete, etc.
water-saving urinal
18% design stage 59%
with automatic
flushing system● High-efficiency
Architectural items
transformers● Ceramic tiles● Energy-saving● Thermal insulation sashes
electronicand doors
toilet seats, etc.
● Recycled gypsum board, etc.

Concrete remnants
Asphaltconcrete remnants
Construction site sludge
Mixed waste
Wood scrap
Metal scrap
Miscellaneous
Total

197

(Non-Consolidated) Unit: 103t

Building construction
New
construction Demolition
532

377

Subtotal
909

Total

Recycling
rate

1,106

100.0%

64

52

12

64

128

100.0%

480
13
21
9
65
850

483
55
9
53
114
1,299

19
12
3
41
31
496

501
67
12
94
145
1,792

982
80
34
103
210
2,644

ー
67.5%
95.0%
99.8%
58.8%
ー

■ Reducing Environmental Impact in the Supply Chain
Taisei Corporation annually publishes the “Taisei Corporation
Green Procurement Guidelines” which set out designatedprocurement items for public works under the Act on
Promoting Green Procurement (Act on Promotion of
Procurement of Eco-Friendly Goods and Services by the Stateand Other Entities) as well as its proprietary environmentallyfriendly construction methods, technologies and initiatives.

These guidelines are used at each stage of design,
procurement and construction by employees in the related
divisions. Design departments set targets for the adoption ofgreen procurement items based on these guidelines. In
FY2017, we adopted 9.5 items per project (compared to thetarget of 9 or more items).

Calculation Standard for Quantity of Construction Waste
Objective
Material-flow
relatedResource
recycling

Item

Calculation Method & Standard

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

FY2018 Targets

KPIs

Promotion of recycling construction waste Final disposal rate

3.7%

Environment Division* The final disposal rate for construction waste of KPIs is not consistent with the numerical values calculated based on figures in the above graph and chart due to the difference in calculation methods.
● The calculated total values may not be consistent with the total values due to data rounding. ● Third-party assured values (independent assurance report on E-12) are indicated with themark.

The Taisei Group Environmental Report 20184

ISO26000

Environment

Realization of a Sustainable and Environmentally Friendly Society : Nature Co-existing Society
Taisei Corporation is continuously working to develop technologies with the aim of promoting the creation of a richer naturalenvironment. We are developing a wide range of projects using those technologies, from planning and construction of facilities tosupport for operation and management after completion.
To realize a society with a richer natural environment, it is important to “visualize” the effects of initiatives on biodiversity. In
2014, we developed a biodiversity assessment tool “IKIMONO-Concierge®,” which enables us to easily confirm such effects byassessing the impact on living creatures
visiting the planning area as an indicator.
This has been used widely in greening
plans and biotope creation.
IKIMONO-Concierge
MORI-Concierge
Enter the address of the planning area
In 2017, we developed the second
tool of the concierge series, “MORIConcierge®.” In order to further deepen

our approach to biodiversity, this toolevaluates a site and shows an ideal
green space for the regional environment
in order to increase the diversity of thegreen space in the area. Focusing on thegreen transition process in which
grasses grow first, then shrubs andeventually forests, this tool enables us topropose various types of green spacesuitable for the environment of theplanning area. We have already begun to
apply the tool to actual projects andcreated an environment with richbiodiversity.

Assess the surrounding environment

Determine potential natural vegetation

Plant type suitable for the planning area

Enter information on the environment in the planning area

Climax forests (Chinju-no-Mori sacred forests surrounding shrines)

Coppice

Glass land
(Annual grasses)

Glass land
(Perennial grasses)

Pioneer forests

Vines / shrubs

Predict and evaluate the possibility that creatures designatedas indicators would fly into the area

○

○

△

△

◎

ー

Select the type of plants you want to use■ Environmental Contribution Activities and Environmental Education
The Taisei Group has implemented various educational andenvironmental activities, including volunteer activities that wehave continued for more than 10 years. We also support NGOs
working to protect small animals and forests, for the purpose ofhelping employees and their families better understand theimportance between the connection of the construction

・ Volunteer activities to protect rural communities(Tokyo Greenship Action)business, social life, and the natural environment. In addition,
we conducted seminars on the environment regarding
environmental management as a whole including biodiversity(lecture on risk management required for companies) ande-learning for all employees (on environmental management:
what does it mean to be conscious of the environment?).

・ Volunteer activities to make dormouse
nest boxes

・ Environmental contribution activities by
volunteer employees “TAISEI 1ton CLUB”(Support for forest reconstruction activities by
Kamaishi Forest Owner’s Association)

FY2018 Targets

KPIs

Implementation of proposals that consider biodiversity Number of proposals

The Taisei Group Environmental Report 2018

30 or more

5

Environment Division

Realization of a Sustainable and Environmentally Friendly Society : A Society Where Safety is Ensured■ Risk Management at Construction Sites and Offices■ Complaints on Construction Sites and Responses Taken

Proportion of Observation Items

Portion of Complaint Types■Education and training, etc.
32%

Noise 46%

Others 20%■Environmental targets
10%
Others0.4％

Traffic
obstruction 8%■Laws andregulations, etc.
58%

Law forpromotion ofeffective
utilizationof resources2％

Dust 13%

Soil
Contamination
Countermeasures
Act
0.4%
WaterPollution Air Pollution Industrial
Control Act, etc. Control Act, Safety and3%
etc.
Health Act
6%6％

Waste management Act
27％

Construction
material recycling Act
7％

Ordinance on Prevention of
Health Impairment due toAsbestos / Hazardous
substance-related acts
7%

At Taisei Corporation, Site Environmental Patrols are implemented
by the environmental departments at head office and branches tosurvey compliance with environmental laws and regulations on
construction sites throughout the Company. Corrective actions
and preventative measures are taken in response to observations
in order to achieve continuous improvement.
At construction sites, we provide our employees andsubcontractors with environmental education based on the“Operation Manual for Prioritized Environmental Issues” tohelp them understand the importance of environmental
management and prevent environment-related accidents,
through measures such as sharing cases leading toenvironmental accidents, raising awareness of the proper
management of harmful chemicals such as asbestos andPCBs, and thoroughly implementing appropriate management
and processing of contaminated soil.
In FY2017, no accidents or legal violations related to theenvironment occurred.

Vibrations 13%
Types

Response measures (examples)

Noise

In response to complaints about noise from night-timework using an engine cutter, the noisy work period waschanged to daytime.

Vibrations

In response to complaints about vibrations during nighttime when shield machines were passing undercommunity roads, the construction time was reduced andthe work period was changed to only in daytime.

Dust

In response to complaints about the dust produced bydump trucks and other work vehicles, immediate wateringwith a water spray car was carried out.

Traffic
obstruction

In response to complaints about work vehicles waiting in
the vicinity of the site, directions were given to thedrivers of such vehicles and guards to not park vehicles
in such area.

Taisei Corporation takes the appropriate measures regarding
complaints related to the environment reported to its
construction sites, etc., and maintains records and reports
using communication sheets based on the EMS procedures
and communicates across the relevant departments andcompanywide when necessary.
We also responded appropriately to opinions from citizen
groups and other organizations.

FY2018 Targets

KPIs

Zero environmental accidents (Implementation of management procedure based on“Operation Manual for Priority Environmental Issues” )0 cases

Safety Administration Division

Promote Development of Technologies■ Technologies and Initiatives That Are Useful for Solving Environmental Issues
Technologies and initiatives to reduce risks and solve
issues concerning the environment are developed anddeployed at various stages of the Taisei Group’s businessactivities, from planning and design to construction, operation,and demolition, and these contribute to reducing the impact
on the global environment.
Environmental risks and issues influence each other and areprofoundly interrelated in various fields such as low carbon,
resource recycling, and co-existence with nature (biodiversity).
For that reason, the development and deployment ofenvironmentally friendly technologies in any one of these fields
contributes to reducing the environmental impact in all, andTaisei Corporation has an important role to play as a socially
responsible company involved in the formation of social capital.

The Taisei Group Environmental Report 20186

ISO26000

Environment■Environment Related Technologies and Initiatives

🅐：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.
Titles in blue are externally awarded technologies and initiatives

Planning and Design● Low-carbon Building

Urban-type ZEB
T-ZEB simulator
Energy simulation technique		● Energy-saving and ZEB technology
T-Zone Saver
T-Breeze Floor System
T-Personal Air Ⅲ
T-Soleil, T-Soleil 100
North Country Air Conditioning
T-Light Cube
Photovoltaic system for building
T-Radiant SlabSite installing pile using geothermal conditioning
Organic EL Task Lighting
Original TAISEI LED lighting
Duct-capping air conditioning system Radio control system
Natural air ventilation system (T-Fresh Air) T-Façade Air
Ground Source Heat Pumps
T-Green BEMS
Task and ambient system for lighting and air-conditioning
Zero Energy House Technology🅔
● Smart community related technology
Smart thermal/electrical storage system
DC Powered Office
Application of renewal energy
Demand response technology*1
Fuel Cell System of Hydrogen
Area Energy Management System (AEMS)● Miscellaneous
CO2 underground sequestration simulation Electrification Floor
Wide area landscape evaluating system
BIM and VR/CIM*2 coupled functionality
Prediction system for strong wind stream among high building
Verification of Smart Wellness OfficeOutside-air supply system of Data Center
T-Flexible Clean room, T-Smart Clean room
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Low Carbon Societ

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Construction

Operation, Renovation, Demolition● CO2 Zero Action● General renovation work

● Application of energy-saving construction methods

Continuous belt conveyor tunnel construction method
Upward shield construction method
Fiber-reinforced ferro concrete segments
Harmonica method
Paving using Visco-Mix🅐
● Improvement of transport methods
Modal shift (surplus soil, industrial waste)
Reduced transport distance
Education in fuel-economical driving● Reduce CO2 by shortening construction periods
Continuous long-distance boring by shield machine with double bits
The continuous cutting of the gravel ground by multi-layered of cemented carbide tip● Adopt energy-saving machines and equipment
Electric-powered backhoe, LED lighting, solar power● Use biodiesel fuel● Simple foundation method for a frame with solar photovoltaic generation panels(T-Root)
●
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●

●
●
●

● Use renewable energy

Extending building life, installing information
telecommunications capability, conversion to barrier free
● Energy-saving renovation work🅓● Energy management
T-Green BEMS
Demand response technology*1● ESCO business*6🅑
● Recovery of fluorocarbons● Recovery of SF6● ZEB renovation technology● District heat plant renovation

Mega-solar power generation system
Concentrated solar power generation system
Geothermal utilization system● Develop liquefied CO2 storage facilities● Light-modulating ceiling system● Heat-recovering solar battery louvers● BIM and VR/CIM*2 coupled functionality ● T-Siteview● Aquarium using artificial seawater● Mole navigator● Breeding water recycling system● Vegetable plant● Wind power generation● Methane hydrate gas leak monitoring● CO2 underground sequestration(CO2 underground sequestration related facilities, CO2 transportation)● Electric power stabilization by electric power storage evaluation system (NaS battery*7)● Distributed energy network technology● Mega-Solar power generation system using the top of final landfill site
● T-BIM Cloud system● T-Light Duct 100● T-Light Blind● Life extension of buildings● TAISEI super concrete●●

Application of Research and Development Technology

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Recycling Oriented Society● Long-life design (develop materials, construction methods)

T-RESPO construction method
TASMO
T-Grid, T.G-WALL, T.T-WALL
TASS-floor (3D)
T-RESQ FTASS unit
T-Feels
TAS-Fine
U.F.C
Automatic warehouse rack seismic vibration control system
Ultra high-strength concrete construction planning technology● Resource-saving
Eco-friendly concrete
Corrugated air duct
T-POP construction method
CFT construction method
TAS-Clean
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● Reduction of construction waste, recycling

Recycling cutter bits of shield machines
E-DAM(environmental data management system)
Recycle wood building materials generated by construction
Construction method using reduced-slurry soil cement columns in rows
Efficient use of soil generated by construction
Use tree cuttings go mulch, compost, charcoal
Reuse of soil generated by construction🅕
● Resource-saving
Precasting ultra high-strength concrete
Green procurement
Fc 200N precast column application
Ultra high-strength concrete with 300 N compressive strength
Reuse of existing pilings during building reconstruction
LNG tank dual PC dike
nePre🅒
Wall PC Structure with Seismic isolation (PALLOUGE χ Premium)🅒
Manufacturing precast products with rapid-hardening concrete🅒
Manufacturing concrete segments with fine powder of blast-furnace slag🅒
Joint molding of PC formwork using recycled plastic board🅒
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Conversion
Renovation
Earthquake resistance, base isolation, seismic vibration control
Embankment structure anti-seismic reinforcement method
Short stroke seismic isolated system for an urban area
Anti-seismic reinforcement by Post-Head-bar🅕
Use of ground flex mole method (flexible boring) for anti-seismic
reinforcement of tank conforming to old law
TASS-Flex FRAME(Anti-seismic construction method for high-rise RC residential buildings)● Pipe refreshing method● Measures against liquefaction of existing facilities with the groundwater level lowering method● Measures against liquefaction of existing facilities with the WinBLADE method● Efficient use of concrete debris● Health Monitoring System for Foundations● Post-Head-Anchor
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● T-POP construction method● Super green concrete● Reusing shield tunneling cutter bits

● Reuse demolished concrete as aggregate● Use tree cuttings for charcoal, compost● Use dehydrated cake produced after chitosan flocculant treatment for planting base●

● Produce ethanol from rice straw●● Business of restoring final waste disposal sites● Business of improving and operating final disposal sites through PFI, DBO*8● Biogas fermentation of domestic animal waste, garbage, and use for electric power generation● Methane fermentation without dilution by water● T-WOOD OA Floor● T-WOOD column-exposed wall, drop-in wood wall

● Construction waste cyclic collecting system for project sites● Use of sewage and sludge in agriculture		● Production of biomass fuels from energy crops		

Nature Co-existing Society●● Ecological Planning● T-Heats Turf

● Rooftop greening, wall greening, rooftop vegetable garden🅔● Relocation and preservation of historic building● Eco-system survey following biotope construction● Urban forest developing technology● Mitigation, biotope● Friendly to raptors and other rare organisms● Conservation of cultural assets● Greening plan based on cluster analysis● Eco-system conservation, Environmentally co-existing planning● Wetland environment impact assessment● Nature-friendly greening, green space ecology planning● Wetland environment restoration● Natural environment conservation and disaster mitigation design method using GIS*3● Water purification using high-density oxygen water● Bottom sediment purification method● Urban forest creation● Pre-Forest● Transport rare plants● Conservation technolog of ecosystem of animals and plants (Mitigation)● Forest saver project● Research on eco-system● Eco-system friendly environmental education● Manufacturing PC products with demolding agents using soybean oil🅒

● TSounds-Ambience, TSounds-Floor● TWinds● Low-carbon city block simulator● Closed system disposal site

● Remediation of contaminated soil
● Groundwater remediation● Healthful housing plans● Radiation decontamination● Energy Saving Diagnosis● Technology for spraying local wild grasses● Aquatope● Improving water environment with LED● Aquatic environment restoration

Restoration of tidal flats and Zostera beds
Restoration technology of coral reef
● Placement and promotion of animal pathways on existing roads●● MORI-Concierge (Plant biodiversity assessment tool)*9● T-Heats● Biodegradable slope frame made of “Biohard”●● IKIMONO-Concierge*4 (Simplified biodiversity assessment tool)● Environmental Assessment

Safety Secured Society● Inherit and develop local culture● Association mat*10● Environmentally Friendly Construction● Environmentally friendly demolition planning and method● Temporary enclosure greening

TECOREP system, TECOREP Light		
Method of dismantling smokestacks “TECOREP Stack”
Incinerator demolition system compliant laws
● Laser non-slip work method● Remediation of contaminated soil, in situ remediation● Asbestos countermeasures
Robot to remove spray-on asbestos inside elevator shafts
Asbestos removal in subways using specialized wagon
Asbestos leaking monitoring system● Proper storage of PCBs
● Radiation decontamination●● Water retaining pavement technology with water supply functionality🅐

Cool Road, Cera Cool🅐● Cool Way🅐
● Underground water reservoir construction method🅐● Guidance regarding MSDS*5● Technology for accelerating decontamination work
● Large-diameter curved pipe roof method● Weeds ad vegetation volume reduction● Automatic noise and vibration monitoring system● UD-HOMET construction method● Application of photocatalytic air purifier in underground construction● ICT-based management technology for dam construction (4D-DIS)● Tunnel Blasting noise reduction system● Unmanned construction equipment system● Remediation of contaminated soil, in situ remediation
Water injection bio-sparging method
Biodegradation method (T-Bio Treat)
Naturally derived heavy metals treatment
Soil remediation method🅕● Groundwater remediation
Permeable purifying barrier (Multi-barrier) method🅕
Biodegradation method (T-Bio Treat)● Non-welding method for Precast Concrete panel joint🅒
●

●

●

●

●

●
●

●
●
●

● Local environment assessment system● Vibration analysis system● Forecasting floods from localized severe rainstorms● Sick house countermeasures● Indoor air pollution prevention● Robot to remove spray-on asbestos● On-site asbestos abatement detoxification system● Decontamination technology for radioactive cesium-enriched fly ash● Technology for collecting radioactive cesium from contaminated soil
● Soil and groundwater remediation● Water purification system using photocatalytic air purifier

In situ remediation of soil contaminated with benzene/cyanogen activating microorganisms
Water purification system using photocatalytic air purifier
Microorganism-based purification of contaminated water “1,4-Dioxane Degrading Technology”
Compact drainage processing system
Bioremediation of Groundwater Contaminated by Chlorinated Ethenes
Using Rhodococcus jostii Strain RHA1
Purification technology of the groundwater contaminated by chlorination ethylene

●
●
●
●
●

●

●
●

*1 A system that varies the energy demand to achieve a balance between supply and demand.
*2 BIM: building information model; VR: virtual reality (both 3D technologies); CIM: Construction Information Modeling*3 Geographic information system*4 Assesses effects of creating a space that considers biodiversity by showing the organisms that may potentially visit.
*5 Material safety data sheet*6 Business providing comprehensive services including energy-saving proposals, provision of facilities, maintenance, and management.
*7 Sodium-sulfur batteries*8 A business method similar to the private finance initiative (PFI) in which the public sector takes on fund-raising and contracts design, construction, and operation to the private sector.
*9 Technology to select plants suitable for the environment of the planning area from the plant succession perspective.
*10 Plant mat combining native plants suitable for the environment of the planning area.
As of March 31, 2018

The Taisei Group Environmental Report 20187

Material Flow and Third-Party Assurance
Material Flow of Taisei Group

1
2

7

2

12

66

Gasoline
Heavy oil109

Offices

Fossil fuel(103KL)

Electricity(106kWh)

Factories

9

Aggregates
1,679

Construction sites(sites)Diesel

Civil engineering

11
68
Factories

21

234
67

CO2
(103t-CO2)
19(Consumption)

Taisei Corporation
1,691(Non-consolidated)

I N PU T

27

Water(103m3)

Ready mixed concrete
4,375

Building
Construction

7

Offices

Main construction
materials(103t)

1■Taisei Corporation■7 Main Group Companies

7 Main Group Companies
153

Steel
Cement 446
283

33

Kerosene2

Others 28

16

Offices

OUT PUT(Quantity discharged)

1

7 Main Group Companies
259

7 Main Group Companies
143

151

Scope3

Scope2

Construction sites(sites)CO2 by Scope(103t-CO2)

Construction waste(103t)Taisei Corporation
2,644

Scope1■Taisei Corporation■7 Main Group Companies

Water(103m3)
Taisei Corporatio
4,701

73

Calculation Standard for Material Flow Dataobjective

Item
Classification by business typeCO2 emissions Scope classification

Material flow-related

CO2 emissions[Offices and Factories] Energyrelated and water consumption[Civil Engineering and building
construction (sites)] Energy-related
and water consumption[Civil Engineering and building
construction (sites)] Calculation of
the main construction materials
and other materials (concrete
formworks and alternative
formworks) purchased.
[Civil engineering, building
construction (sites), and factories]
Calculation of construction andindustrial waste emissions

Calculation Method & Standard
Classification into civil engineering and building construction (sites), offices (excluding development projects and others),
and factories
Scope 1: CO2 emissions associated with the combustion of fossil fuels
Scope 2: Indirect CO2 emissions associated with the use of electricity, steam, and chilled and hot water
Scope 3: CO2 emissions associated with the transport of construction waste off construction sites and the outward andreturn transport of soil from construction (off-site 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 FY2016 according to the electrical power company is used.
Electrical power: Calculated using the 2016 emission coefficient on the user end announced by the Federation of ElectricalPower Industries of Japan (before reflecting the Kyoto credit), 0.518t-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.
The annual quantities purchased and used by the offices and factories of the Taisei Group are calculated in monthly units.
Calculated for each company based on the Taisei Group environmental data manual. Consumption in a two-month period in
FY2017 is sampled at 199 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 civilengineering, this calculation is performed for each construction type.
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.

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.

・ 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 morethan 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, fromwhich the fat content is excluded. Energy-related: Fossil fuels (heavy oil, diesel, gasoline, kerosene), electrical power, city gas, and LPG consumption and their energyequivalent values.
● Third-party assured values (independent assurance report on E-12) are indicated with theはmark.

The Taisei Group Environmental Report 20188

ISO26000

Environment■Taisei Corporation Material Flow
INPUT

Third-party assured values are indicated with themark■Material Flow for Group Companies

mark

Units
109MJ

FY 2013

FY 2014

FY 2015

FY 2016

FY 2017

3.84

3.26

3.57

3.67

3.90

Construction Site (building)

109MJ

1.41

1.34

1.40

1.61

1.72

Construction Site (civil engineering)

109MJ

2.16

1.67

1.93

1.81

1.95

Factories

109MJ

1.43

1.33

1.19

1.10

1.12

Offices

109MJ

0.27

0.25

0.24

0.24

0.23

Offices

109MJ

0.16

0.16

0.14

0.14

0.13

103KL

71

55

58

61.9

68.9

103KL

33

35

30

27

25

Diesel

3

10 KL

70

54

57

60.0

66.3

Diesel

103KL

9

15

12

11

9

Kerosene

103KL

0.8

0.7

0.6

1.4

2.0

Kerosene

103KL

3

3

3

2

2

Heavy oil

103KL

0.2

0.1

0.2

0.5

0.6

Heavy oil

103KL

19

16

14

12

12

Total electricity

Total energy use

Total fossil fuel use

INPUT

Third-party assured values are indicated with the

Total energy use
Sites (construction sites)

Total fossil fuel use

Units
109MJ

FY 2013

FY 2014

FY 2015

FY 2016

1.90

1.91

1.73

1.61

FY 2017

1.53

109MJ

0.32

0.42

0.40

0.37

0.29

106kWh

110

115

134

129

125

Construction Site (building)106kWh

37

40

33

35

49

Construction Site (civil engineering)

106kWh

53

56

82

76

60

Sites (construction sites)

106kWh

1

1

1

1

1

Offices

10 kWh

20

19

18

18

16

Factories

106kWh

38

36

35

34

33

City gas (offices)

103m3

140

103

91

94

227

Offices106kWh

10

9

8

7

7

Total quantity of the main construction materials (following 6 items)

103t

7,702

10,472

7,638

7,738

6,811

City gas

103m3

3,181

2,592

2,888

3,622

3,794

Ready mixed concrete

103t

6,441

8,249

4,321

4,833

4,375

LPG

Aggregates (gravel, crushed stone, etc.)

103t

519

1,095

2,411

1,979

1,679

Water (consumption)

Cement

103t

102

326

190

262

283

Steel

103t

606

765

690

638

446

Timber

103t

31

27

21

15

24

Asphalt

103t

4

10

2

11

(of which the green procurement quantity)*

103t

2,701

2,946

1,152

Total concrete formwork use

103m2

5,640

5,085

Tropical plywood formwork

103m2

3,712

Alternative formwork

103m2

1,928

％

6

Gasoline
Total electricity use

103KL

2

2

2

2

2

106kWh

48

46

44

42

41

t

255

92

58

92

63

103m3

138

142

137

132

153

Units
103t-CO2

FY 2013

FY 2014

FY 2015

FY 2016

FY 2017

121

124

111

101

95

Sites (construction sites)

22

29

27

26

19

4

103t-CO2

Factories

90

85

75

67

68

681

995

103t-CO2

Offices

10

10

8

8

7

3,473

3,042

4,082

103t-CO2

1,801

2,850

ー

ー

95

2,514

ー

101

3,219

103t-CO2

Scope1

1,241

1,233

ー

ー

ー

73

959

103t-CO2

77

1,866

Scope2

27.6

40.8

30.2

ー

ー

21

36.7

ー

23

34.2

103t-CO2

Scope3

1,383

1,970

2,338

1,691

ー

ー

1

5,231

ー

2

103m3

103t-CO2

NOX

t

259

325

277

249

211

Units
103t-CO2

FY 2013

FY 2014

FY 2015

FY 2016

FY 2017

SOX

t

153

148

128

109

106

250

209

226

231

245

Quantity of Chlorofluorocarbon and halon recovered

t

2

1

2

2

2

Construction Site (building)103t-CO2

92

88

92

106

110

Total industrial waste emissions

103t

397

321

391

352

259

Construction Site (civil engineering)103t-CO2

143

108

122

113

124

103t

389

312

365

333

248

Offices

103t-CO2

15

13

12

12

11

103t-CO2

250

209

226

231

245

103t
103m3

8
138

9
142

26
137

19
121

11
143

Scope1103t-CO2

163

124

128

138

151

Scope2103t-CO2

65

67

76

71

67

Scope3103t-CO2

22

18

22

22

27

NOX

t

1,215

931

989

1,040

1,151

SOX

t

182

139

148

158

175

Quantity of Chlorofluorocarbon and halon recovered

t

12

7

11

18

12

103t

2,695

2,355

2,284

2,415

2,644

Quantity recycled and given intermediate processing

103t

2,660

2,312

2,261

2,372

2,609

Quantity of direct final disposal

103t

35

43

22

43

20

(of which, asbestos quantity disposed)

103t

8

5

8

11

8

103m3

964

1,839

3,003

8,172

4,701

Alternative formwork percentage
Water (consumption)
INPUT
Total CO2 emissions

Total CO2 emissions

Construction waste

Water (discharged)■CO2 Emissions of the Taisei Group (FY2017)■Construction Waste Amount of the Taisei Group (FY2017)

Units:10 t-CO2

Units:10 t

3■Taisei Corporation
245

3■7 Main Group
Companies
95

TAISEI ROTEC CORPORATION
87■Taisei Corporation
2,644

Whole Group340
Other 5Main Group
Companies
4
TAISEI U-LEC CO., LTD.
5

Whole Group
2,903■7 Main Group
Companies
259

TAISEI ROTEC CORPORATION191
TAISEI U-LEC CO., LTD.
45

INPUT
Total CO2 emissions

Total CO2 emissions

Quantity recycled
Final disposal quantity
Water (quantity discharged)

Third-party Assurance of Environmental Data
within the Taisei Group■ Calculation Standard for Material Flow

Over the past five years, we have standardized andmanualized 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 FY2017,
continuing from the previous year, the 7 main groupcompanies received third-party assurance for their actual
performance data.
Among the group companies, TAISEI ROTECCORPORATION, TAISEI HOUSING CORPORATION, TaiseiYuraku Real Estate Co., Ltd. and SEIWA RENEWAL WORKS
CO., LTD. were inspected by auditors visiting their head
offices, major offices and factories.
Third-party assurance not only guarantees the datareliability but also leads to a review and improvement of the
management structure and initiatives of each group company.

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

Item

Item

NOx and SOx emissions[Civil engineering and building construction(sites)] Calculation of chlorofluorocarbons andhalon recovered.

Calculation Recovered quantity of chlorofluorocarbon
Method & and halon processing commissioned by theStandard Taisei Group.
Item[Civil engineering and building construction(sites)] Calculation of construction soil emissions

Calculation
Surplus construction soil removed from
Method &construction sites of Taisei Corporation.
Standard
Other 5Main Group
Companies
22* The quantity used as green procurement products out of the main construction materials● The calculated total values may not be consistent with the total values due to data rounding.
● Third-party assured values are indicated with themark.
For calculation standards other than those for material flow above, please refer to E-3, 4 and 8.

The Taisei Group Environmental Report 20189

ISO26000

Environment

Environmental Accounting■Environmental Conservation Cost

Units: million yen

FY 2017Classification

Investment amount

Details of main initiatives

Total

Building

Offices

Total

Ratio ofprevious
year

ー

7,319

16,99344

24,356(4,215)

Cost of temporary works on sites to prevent air pollution,water contamination, noise, vibration, etc.

ー

0

0

14

14

(318)

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

ー

0

56

0

57

(33)

Waste processing cost on site, resource recycling cost,asbestos and PCBs recovery and processing cost

ー

7,319

16,93730

24,286(3,865)

Personnel cost and management cost for environmentallyfriendly design and engineering

ー

0

0

2,279

2,279

(27)

Personnel cost, education cost, and inspection cost for EMS,
greening around construction sites, cooperation
communities, etc.

ー

0

0

1,201

1,201

66

0

0

1,479

1,479

651

1. Cost in business areas（1）Pollution prevention cost（2）Global environmental
conservation cost●●（3）Resource recycling cost

2. Upstream anddownstream cost

●

●

●

3. Administration cost●

4. Research anddevelopment cost

5. Social activity cost●●

6. Environmental
remediation cost

Cost

Ratio of
Civil
previous
engineering
year

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

5

(7)

Donation to environmental NGOs, etc.

ー

0

0

3

3

(6)

Soil survey and decontamination cost for real estate for saleby the Company, cost of land subsidence, and repair ofroads and other neighboring repairs, etc.

ー

0

0

167

167

140

7,319

16,993

5,173

29,486(3,392)

5

Total

(7)

■Economic Effect Associated with Environmental Conservation Measures

Units: million yen

Economic Effect Associated with Environmental Conservation Measures
Earnings
Economic Effect Associated withEnvironmental Conservation Measures (substantial effect)

Economic Effect Associated withEnvironmental Conservation Measures (estimated effect)

Cost reduction

Amount2,737●

Recycling of waste produced by the main business activities●

Reduction in office energy cost due to energy efficiency●

Reduction in construction site energy cost

(604)

●

Reduction in waste processing cost associated with resource conservation and recycling

3,472

(１)

102

Reduction of environmental impact converted to monetary amount■ Environmental Research andDevelopment Cost Ratio■ Environmental Impact Ratio■ Environmental Efficiency● Environmental R&D cost / total R&D cost(%)

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

30

30

● Sales / CO2 emissions (construction + office)(million yen / t-CO2)

20
10
0

19.2

17.2

(only derived from Taisei Corporation)

20

14.8
8.9

7.0

2013 2014 2015 2016 2017 (FY)

24.2

16.7

4

16.2
7.6

10
0

5.5

6
21.0

5.2

5.0

5.1

2

2013 2014 2015 2016 2017 (FY)● The calculated total values may not be consistent with the total values due to data rounding.

The Taisei Group Environmental Report 2018

4.1

10

0

2013 2014 2015 2016 2017 (FY)

Independent Assurance Report

The Taisei Group Environmental Report 201811