Environmental ReportEnvironmental Reporting

Mitigate and Adapt to Climate Change

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

CO2 emissions in the construction stage (Non-consolidated)

CO2 emissions in the construction stage (Non-consolidated)

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

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

Reducing the estimated CO2 emissions at the stage of building operation helps reduce the CO2 emissions in Category 11 (use of products sold) in Scope 3 based on the GHG protocol criteria.

(103t-CO2) Scope 3 (upstream) Scope 1 and 2 Scope 3 (downstream)
GHG protocol criteria*1 Category 1 - 8
1,900
209 Category 11 and 12
4,100
Industry organization criteria*2 22 -

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

Recognized as a Climate "A List Company" by CDP

CDP A LIST 2016 CLIMATE

In FY2016, Taisei Corporation was recognized by CDP*3 on its "A List," which evaluates initiatives by companies to address climate change. This is the highest of eight levels on the evaluation, and, of 500 Japanese companies surveyed, 22 received recognition.
The Company works to promote environmental management across the entire Group, by participating in the CDP Supply Chain Program with six major Group companies who are our business partners, and by identifying and analyzing risks and opportunities related to climate change.

3 CDP: A not-for-profit organization based in the U.K. that sends questionnaires on environmental strategies, GHG emissions, etc., to leading companies around the world and analyzes and evaluates their answers, and publishes the results to investors.

Calculation Standards for CO2 Emissions

Objective Item Calculation Method & Standard
Material flow-related 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 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 FY2015 according to the electrical power company is used.
Electrical power:
Calculated using the 2015 emission coefficient on the user end announced by the Federation of Electrical Power Industries of Japan (before reflecting the Kyoto credit), 0.534t-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.
Prevention of global warming Estimated CO2 emissions and reduction rate in the building operation stage Calculated using the "Energy Efficiency Plan" for each of 44 projects, each with a total floor area of 300 ㎡ or more and with a total area of about 910,000 ㎡, of Taisei Corporation building construction projects.
CO2 emissions and reduction rate in the construction stage CO2 emissions at Taisei Corporation construction sites and percentage of CO2 emissions reduced from FY1990 emissions. In some cases, 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.

KPIs

Contribution to realizing Low Carbon Society

  • Environment Division

Taisei Corporation is working to reduce the estimated CO2 emissions at the stage of building operations by promoting ZEB and implementing environmentally friendly designs. We have also set intensity targets (emissions per construction turnover) for CO2 emissions at the construction stage, and all construction sites throughout Japan are striving to reduce environmental impact and CO2 emissions during construction.

Improve reduction rate of CO2 emissions at the operation stage of buildings ・・・38.9%
Improve reduction rate of CO2 emissions at the construction stage on building construction sites and civil engineering sites ・・・51.9%

Effectively Utilize Resources

ISO 6.5.4 Sustainable resource use
GRI EN23、EN28

Quantity of Construction Waste (Non-Consolidated)

Quantity of Construction Waste (Non-Consolidated)

Construction Waste Treatment Breakdown (Non-Consolidated)

Construction Waste Treatment Breakdown (Non-Consolidated)

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

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

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

Construction waste Civil engineering Building construction Total Recycling rate
New construction Demolition Subtotal
Concrete remnants 233 180 651 832 1,065 100.0%
Asphalt and concrete remnants 59 41 42 83 142 100.0%
Construction site sludge 408 277 57 334 742 -
Mixed waste 11 27 14 40 51 71.1%
Wood scrap 20 7 7 14 34 98.3%
Metal scrap 80 67 41 108 188 99.9%
Miscellaneous 31 68 93 161 193 69.8%
Total 843 667 905 1,572 2,415 -

Reducing Environmental Impact in the Supply Chain

Taisei Corporation sets targets to manage the adoption of green procurement items during the design of buildings based on the "Taisei Corporation Green Procurement Guidelines." In FY2016, we adopted 9.8 green procurement items per project (compared to the target of 9 or more items). We also organize study groups on SDGs and supply chain management for procurement departments.

Calculation Standard for Quantity of Construction Waste

Objective Item Calculation Method & Standard
Material
flow-related
[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's individual construc-tion projects, joint venture construction for which Taisei Group is the representative, and factories owned by Taisei Group.
Resource recycling 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 attribut-able to Taisei Corporation)
Recycle rate = 100 - final disposal rate

KPIs

Promotion of 3R* Activities and Green Procurement

  • Environment Division

In FY2016, the final disposal rate for construction waste excluding sludge and quantities not attributable to Taisei Corporation was 3.5%. We also operate the "Taisei Corporation Green Procurement Guidelines" for the purpose of adopting materials and equipment and applying construction methods with low environmental impact. In FY2016, the green procurement rate was 30.8%, based on procurement data for 91 items.

Decrease construction waste final disposal ・・・ 3.5%

3R: Reduce / Reuse / Recycle

Conserve Biodiversity

ISO 6.5.6 Protection of the environment, biodiversity and restoration of natural habitats
GRI EN13

Support and Practice Activities & Trainings to Preserve Natural Environment

Taisei Corporation is continuously working to develop technologies to create a society with rich biodiversity. We are developing a wide range of proposals using those technologies, from planning and construction of facilities to support for operation and management after completion.
At Sapporo Dome, our technologies were adopted from the planning stage with the aim of creating an environment that can be used by diverse living creatures. In order to verify that they can actually inhabit the environment, long-term monitoring of living creatures has been implemented and demonstrated from the planning stage to the present day. The store of knowledge acquired in the process has been used in developments such as the biodiversity communication tool "Ikimono (living creatures) Concierge," and is shared broadly with society through various environmental awareness plans and activities conducted by Sapporo Dome Co., Ltd.
Taisei Corporation cooperated and participated in the "2nd Expedition to Find the Living Creatures of Sapporo Dome - Let's Observe the Birds and Insects that Live in the Dome" (organized by Sapporo Dome Co., Ltd.), a nature observation event for elementary school students and their parents held at Sapporo Dome on August 1, 2016.
After an explanation by Taisei Corporation employees about environmental measures taken during construction, participants wandered around the grounds of Sapporo Dome accompanied by biology specialists, looking for birds and insects and touching the natural surroundings with their own hands in this program implemented to teach the value of biodiversity.

Support and Practice Activities & Trainings to Preserve Natural Environment

Environmental Contribution Activities and Environmental Education

The Taisei Group carries out initiatives for employees and their families to help them better understand the importance of the connection of the construction business and social life with the natural environment. We implement various environmental activities and education, including volunteer activities that have continued for more than 10 years, and support for NGOs working to protect small animals and forests.

  • Volunteer activities to protect rural communities (Tokyo Greenship Action) Environmental Contribution Activities and Environmental Education
  • Environmental contribution activities by volunteer employees "TAISEI 1ton CLUB"
    (Support for forest conservation activities in the Philippines by REDD+project) Environmental Contribution Activities and Environmental Education
  • Volunteer activities to make dormouse nest boxes Environmental Contribution Activities and Environmental Education
  • Support for "animal pathways" for small animals
  • Seminars on the environment (Specialists are invited to give talks on topics such as eco-life overseas)
  • E-learning on the environment for all employees (Environmental management targets and initiatives as an Eco First Corporation)

Reduce Environmental Risks

ISO 6.5.3 Prevention of pollution
GRI G4-14、EN34

Risk Management at Construction Sites and Offices

Proportion of Observation Items

Proportion of Observation Items

At Taisei Corporation, Site Environmental Patrols are implemented by the environmental departments at head office and branches to survey compliance with environmental laws and regulations on construction sites throughout the Company. Corrective actions and preventative measures are taken in response to observations in order to achieve continuous improvement.
At construction sites, we provide our employees and subcontractors with environmental education based on the "Operation Manual for Prioritized Environmental Issues" to help them understand the importance of environmental management and prevent environment-related accidents, through measures such as sharing cases leading to environ-mental accidents, raising awareness of the proper manage-ment of harmful chemicals such as asbestos and PCBs, and thoroughly implementing appropriate management and processing of contaminated soil.
In FY2016, no accidents or legal violations related to the environment occurred.

Complaints on Construction Sites and Responses Taken

Portion of Complaint Types

Portion of Complaint Types
Types Response measures (examples)
Noise In response to complaints about the noise of a compressor that was set up at a designated place outside the building in order to do chipping work inside a building, the location of the compressor was changed.
Traffic obstruction In response to complaints about the location where dump trucks and other work vehicles waited in the vicinity of the site, the specialist contractor was directed not to have trucks on standby, and the site was checked regularly.
Vibrations In response to complaints from the neighborhood about noise and vibration during blasting and digging of tunnels, a measuring device was set up and the measure-ments checked regularly to ensure that the noise was below the control values agreed upon in discussion with customers.
Dust In response to comments that the dust produced on the construction site was carried outside the site on the workers' shoes, the number of mats where workers could wipe their feet was increased after cleaning up the dust.
Water pollution In response to an incident in which water used to rinse paint was released into storm drains and polluted water flowed into a river, measures were taken to pre-vent recurrence, including thorough implementation of education and appropriate processing across the Company.

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 and companywide when necessary.
We also strive to respond appropriately to opinions received from citizen groups and other organizations.

KPIs

Proper Management of Construction Waste

  • Environment Division

In order to ensure the proper processing of construction waste, Taisei Corporation has been promoting the use of the electronic manifest (waste transmittal form) in cooperation with outsourcing companies for waste processing, collection and transport companies, and waste disposal companies, and has worked to improve the rate of use. Since we have achieved our initial goal of increasing use, the electronic manifest has become a matter for everyday management starting in FY2017, but we are continuing our efforts to ensure proper management of waste, including digitalization of subcontracts for industrial waste processing and promotion of the electronic manifest within the Taisei Group.

Improve electronic manifest diffusion rate ・・・94.7%

Promote Development of Technologies

ISO 6.5.2 Principles and considerations
GRI EN27

Technologies and Initiatives That Are Useful for Solving Environmental Issues

Technologies and initiatives to reduce risks and solve issues concerning the environment are developed and deployed at various stages of the Taisei Group's business activities, 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 are profoundly interrelated in various fields such as low carbon, resource recycling, and co-existence with nature (biodiversity). For that reason, the development and deployment of environmentally friendly technologies in any one of these fields contributes to reducing the environmental impact in all, and Taisei Corporation has an important role to play as a socially responsible company involved in the formation of social capital.

KPIs

Providing Environmentally Friendly Technologies

  • Environment Division

Taisei Corporation pursues research and development for the prevention of global warming, effective utilization of resources, and conservation of biodiversity. In FY2016, we made 30 media announcements about environment-related technology and projects that apply it. Main examples include technologies and systems related to ZEB and smart communities, earthquake resistance and seismic isolation technologies and technologies to analyze and evaluate earthquake response, purification technologies for contaminated soil or water, and solar lighting systems.

Promote media presentations on research, development and promotion of environmental technologies ・・・ 30 Projects

Promote Environmental Activities

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

Implementation of CO2 Zero Action and Eco Model Project

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 together with many companies in the supply chain. In addition, construction sites that carry out particularly advanced initiatives are selected as "Eco Model Projects," and further CO2 reduction activities are implemented.

CO2 ZARO ACTION  Eco Model Project

ZEB (Zero Energy Building) Proposals

Taisei Corporation Technology Center ZEB Demonstration Building

Taisei Corporation Technology Center
ZEB Demonstration Building

Starting with the construction of Japan's first urban Net Zero Energy Building, the "ZEB Demonstration Building," Taisei Corporation has worked to spread and expand ZEB as an industry top runner by realizing ZEB in customers' buildings, among other measures.
We will continue our efforts to contribute to achieving Japan's CO2 reduction targets by widely promoting the shift to ZEB in buildings of various purposes, including tenant buildings.

Material Flow and Third-Party Assurance

ISO 6.5.4 Sustainable resource use
6.5.5 Climate change mitigation and adaptation
GRI EN1、EN3、EN8、EN15、EN16、EN17、EN19、EN20、EN21、EN22、EN23、EN25

Material Flow of Taisei Group

Material Flow of Taisei Group

Calculation Standard for Material Flow Data

objective Item Calculation Method & Standard
Material flow-related 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 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 FY2015 according to the electrical power company is used.
Electrical power:
Calculated using the 2015 emission coefficient on the user end announced by the Federation of Electrical Power Industries of Japan (before reflecting the Kyoto credit), 0.534t-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 FY2016 is sampled at 193 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.
  • Organization 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.

Taisei Corporation material flow

Third-party assured values are indicated with the mark

INPUT Units FY 2012 FY 2013 FY 2014 FY 2015 FY 2016
Total energy use 109MJ 3.55 3.84 3.26 3.57 3.67
 Construction Site
 (building)
109MJ 1.56 1.41 1.34 1.40 1.61
 Construction Site
 (civil engineering)
109MJ 1.64 2.16 1.67 1.93 1.81
 Offices 109MJ 0.35 0.27 0.25 0.24 0.24
Total fossil fuel use 103KL 55 71 55 58 61.9
 Diesel 103KL 53 70 54 57 60.0
 Kerosene 103KL 0.9 0.8 0.7 0.6 1.4
 Heavy oil 103KL 0.9 0.2 0.1 0.2 0.5
Total electricity 106kWh 143 110 115 134 129
 Construction Site
 (building)
106kWh 58 37 40 33 35
 Construction Site
 (civil engineering)
106kWh 56 53 56 82 76
 Offices 106kWh 29 20 19 18 18
City gas (offices) 103m3 150 140 103 91 94
Total quantity of the main
construction materials
(following 6 items)
103t 6,676 7,702 10,472 7,638 7,738
 Ready mixed concrete 103t 5,200 6,441 8,249 4,321 4,833
 Aggregates
 (gravel, crushed stone, etc.)
103t 870 519 1,095 2,411 1,979
 Cement 103t 130 102 326 190 262
 Steel 103t 440 606 765 690 638
 Timber 103t 30 31 27 21 15
 Asphalt 103t 6 4 10 2 11
 (of which the green
 procurement quantity)*
103t 2,161 2,701 2,946 1,152 681
Total concrete formwork use 103m2 4,407 5,640 5,085 3,473 3,042
 Tropical plywood formwork 103m2 3,543 3,712 3,219 2,514 1,801
 Alternative formwork 103m2 864 1,928 1,866 959 1,241
 Alternative formwork percentage % 19.6 34.2 36.7 27.6 40.8
Water (consumption) 103m3 1,663 5,231 1,383 1,970 2,338
OUTPUT Units FY 2012 FY 2013 FY 2014 FY 2015 FY 2016
Total CO2 emissions 103t-CO2 216 250 209 226 231 
 Construction Site
 (building)
103t-CO2 97 92 88 92 106 
 Construction Site
 (civil engineering)
103t-CO2 103 143 108 122 113 
 Offices 103t-CO2 16 15 13 12 12 
Total CO2 emissions 103t-CO2 216 250 209 226 231 
 Scope1 103t-CO2 118 163 124 128 138 
 Scope2 103t-CO2 73 65 67 76 71 
 Scope3 103t-CO2 25 22 18 22 22 
NOX t 921 1,215 931 989 1,040 
SOX t 143 182 139 148 158 
Quantity of Chlorofluorocarbon
and halon recovered
t 3 12 7 11 18 
Construction soil
(transported off site)
103m3 2,753 2,333 3,342 861 1,081
Construction waste 103t 2,236 2,695 2,355 2,284 2,415 
 Quantity recycled and
 given intermediate processing
103t 2,220 2,660 2,312 2,261 2,372
 Quantity of direct final disposal 103t 17 35 43 22 43
 (of which, asbestos
 quantity disposed)
103t 6 8 5 8 11
Water
(discharged)
103m3 - 964 1,839 3,003 8,172

The quantity used as green procurement products out of the main construction materials

CO2 emissions of theTaisei Group (FY 2016)

units:103t-CO2

CO2 emissions of theTaisei Group

Construction waste amount of the Taisei Group
(FY 2016)

units:103t

Construction waste amount of the Taisei Group

Material flow for group companies

Third-party assured values are indicated with the mark

INPUT Units FY 2012 FY 2013 FY 2014 FY 2015 FY 2016
Total energy use 109MJ 1.74 1.90 1.91 1.73 1.61 
 Sites
 (construction sites)
109MJ 0.28 0.32 0.42 0.40 0.37 
 Factories 109MJ 1.30 1.43 1.33 1.19 1.10 
 Offices 109MJ 0.16 0.16 0.16 0.14 0.14 
Total fossil fuel use 103KL 30 33 35 30 27 
 Diesel 103KL 8 9 15 12 11 
 Kerosene 103KL 2 3 3 3
 Heavy oil 103KL 17 19 16 14 12 
 Gasoline 103KL 3 2 2 2
Total electricity use 106kWh 45 48 46 44 42 
 Sites
 (construction sites)
106kWh 1 1 1 1
 Factories 106kWh 35 38 36 35 34 
 Offices 106kWh 9 10 9 8
City gas 103m3 2,853 3,181 2,592 2,888 3,622 
LPG t 133 255 92 58 92 
Water
(consumption)
103m3 105 138 142 137 132
OUTPUT Units FY 2012 FY 2013 FY 2014 FY 2015 FY 2016
Total CO2 emissions 103t-CO2 107 121 124 111 101 
 Sites
 (construction sites)
103t-CO2 18 22 29 27 26 
 Factories 103t-CO2 81 90 85 75 67 
 Offices 103t-CO2 8 10 10 8
Total CO2 emissions 103t-CO2 - - - - 101 
 Scope1 103t-CO2 - - - - 77 
 Scope2 103t-CO2 - - - - 23 
 Scope3 103t-CO2 - - - -
NOX t - 259 325 277 249
SOX t - 153 148 128 109
Quantity of Chlorofluorocarbon
and halon recovered
t - 2 1 2 2
Total industrial waste emissions 103t 278 397 321 391 352 
 Quantity recycled 103t 267 389 312 365 333
 Final disposal quantity 103t 11 8 9 26 19
Water
(quantity discharged)
103m3 - 138 142 137 121

Third-party Assurance of Environmental Data within the Taisei Group

Over the past five years, we have standardized and manualized 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 FY2016, 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 CORPORATION and TAISEI HOUSING CORPORATION were inspected by auditors visiting their head offices, major offices and factories.
Third-party assurance not only guarantees the data reliability but also leads to a review and improvement of the management structure and initiatives of each group company. The Taisei Group was awarded the "Encouragement Prize for Company Developing Environmental Leadership 2016" for its unified approach to environmental management and efforts that have led to environmental leadership development.

Calculation Standard for Material Flow

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.

Environmental Accounting

ISO 6.5.2 Principles and considerations
GRI EN31、SO8

Environmental conservation cost

Units: million yen

Classification Details of main initiatives FY 2016
Investment amount Cost
Total Ratio of previous year Civil engineering Building Offices Total Ratio of previous year
1. Cost in business areas   -   10,628 17,901 42 28,571 5,703
(1) Pollution prevention cost
  • Cost of temporary works on sites to prevent air pollution, water contamination, noise, vibration, etc.
-   262 54 16 332 (43)
(2) Global environmental conservation cost
  • Cost of recovery of CFC and halon, green electricity procurement cost
-   0 89 0 89 37
(3) Resource recycling cost
  • Waste processing cost on site, resource recycling cost, asbestos and PCBs recovery and processing cost
-   10,366 17,758 26 28,150 5,710
2. Upstream and downstream costs
  • Personnel costs and management costs for environmentally friendly design and engineering
-   0 0 2,306 2,306 532
3. Administration cost
  • Personnel cost, education cost, and inspection cost for EMS, greening around construction sites, cooperation communities, etc.
-   2 1 1,132 1,136 118
4. Research and development cost
  • Personnel cost and management cost for environmental research and development (includes biodiversity conservation related cost of 20 mil. yen)
12 (4) 0 0 828 828 (452)
5. Social activity costs
  • Donation to environmental NGOs, etc.
-   0 0 9 9 1
6. Environmental remediation costs
  • 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 27 27 23
Total   12 (4) 10,630 17,902 4,345 32,878 5,925

Economic effect associated with environmental conservation measures

Units: million yen

Economic Effect Associated with Environmental Conservation Measures Amount
Economic Effect Associated with
Environmental Conservation Measures
(substantial effect)
Earnings
  • Recycling of waste produced by the main business activities
308
Cost reduction
  • Reduction in office energy cost due to energy efficiency
24
  • Reduction in construction site energy cost
2,287
  • Reduction in waste processing cost associated with resource conservation and recycling
(3,827)
Economic Effect Associated with
Environmental Conservation Measures
(estimated effect)
Reduction of environmental impact converted to monetary amount 67

Environmental research and development cost ratio

Environmental research and development cost ratio

Environmental impact ratio
(only derived from Taisei Corporation)

Environmental impact ratio (only derived from Taisei Corporation)

Environmental efficiency

Environmental efficiency