Protecting the precious environment
Environmental accounting

We introduced environmental accounting in fiscal 2004 to get a grasp of environmental conservation activities in quantitative terms and promote such activities in an efficient manner.

#Cyclical resource use#Energy & CO2#Pollution prevention and the local environment#Supply chain

Basic matters/results

Scope of calculations

Haseko Corporation's activities

  1. Completed works at 159 worksites (new building works: 131, demolition works: 28)
  2. Offices (Tokyo region: Shiba Head Office Building/Yokohama Branch, Kansai region: Osaka Hiranomachi Building, Nagoya Branch/Kyoto Branch)

Target period

April 1, 2018 to March 31, 2019

Aggregation method

The following cost items were aggregated by using "Environmental Accounting Guidelines 2005 (Ministry of the Environment)" and "Environmental Accounting Guidelines in the Construction Industry 2002 (Japan Federation of Construction Contractors)" as reference.

  1. Business area costs
    1. Pollution prevention costs: Costs for measures to prevent air pollution, water contamination, noise, vibration, etc. were aggregated.
    2. Global environmental conservation costs: Costs for measures to prevent global warming, save energy, prevent the destruction of the ozone layer, etc. were aggregated.
    3. Resource circulation costs: Costs for waste separation/recycling and appropriate processing, etc. were aggregated.
  2. Upstream/downstream costs
    Labor costs incurred in proposing environment-conscious designs were aggregated.
  3. Administration costs
    Costs for environmental conservation management activities and ISO14001:2015 implementation and maintenance costs were aggregated.
  4. R&D costs
    Costs for research and technological development related to environmental conservation were aggregated.
  5. Social activity costs
    Costs for making donations, providing assistance, etc. to environmental groups and local communities were aggregated.
  6. Environmental remediation costs
    Costs for repairing the surrounding environment and manifest purchasing expenses (fund portion) were aggregated.
Classification Description of main activities Amount of costs (million yen)
FY2014 FY2015 FY2016 FY2017 FY2018
Business area costs   3,789 3,424 4,191 4,006 5,216
(1) Pollution prevention costs Costs for measures to prevent pollution at worksites 331 309.4 392.8 559.2 519.9
(2) Global environmental conservation costs Costs for stop-idling campaigns and
costs for appropriate processing of CFC		 7 8.3 13.4 21.2 13.5
(3) Resource circulation costs Costs for separation, recycling and
appropriate processing of construction waste		 3,451 3,106 3,784.80 3,425.20 4,683
Upstream/downstream costs Labor costs for environment-conscious designs 9.2 8.4 10.9 8.8 12.3
Administration costs ISO14001 registration/examination/implementation costs
Labor costs for ISO14001 activities
Costs for monitoring and measuring environmental impact
Environmental education costs		 267 219 413.9 260.8 377.1
R&D costs Costs for research and
technological development related to
environment-related technologies		 67 75.5 88.3 94.9 108
Social activity costs Donations to environmental groups and
local communities		 1.1 0.3 0.4 0.6 0.4
Environmental remediation costs Costs for repairing surrounding environment and manifest purchasing expenses
(fund portion)		 97 83 144.5 76.6 110
Total environmental conservation costs 4,230 3,810 4,849 4,447 5,824

Environmental conservation effects

Item Unit FY2014 FY2015 FY2016 FY2017 FY2018
Business area effects Construction activities Volume of construction waste discharged thousand tons 495.8 416.8 520.2 538.3 565.5
Volume of construction waste recycled thousand tons 457.2 404.3 498.7 532.7 538.8
Final disposal volume of construction waste thousand tons 38.6 12.5 21.5 5.6 26.7
CO2emissions (new building construction) thousand tons-CO2 37.9 35.3 28.9 34.7 36.6
CO2emissions per unit of net sales (new building construction) t-CO2/hundred million yen 11.31 11.04 10.43 10.53 10.21
Office activities Electricity usage thousand kWh 6,147 6,254 6,222 6,347 6,386
Copy paper usage ten thousand sheets 1,788 1,998 1,813 1,841 1,778
CO2emissions t-CO2 2,111 2,145 2,113 2,159 2,165
General waste discharged tons 51.7 71.1 80.1 57.0 44.3
Upstream/downstream
effects		 Green procurement Steel for electric furnace (reinforcing steel) thousand tons 233 211 194 203 228
Blast furnace cement and freshly-mixed concrete thousand m3 254 206 255 176 225
Recycled tiles thousand m2 434 439 310 302 356
Recycled plasterboards thousand m2 4,570 6,142 4,055 4,566 4,765
Particle boards (double flooring) thousand m2 147 209 96 189 255
Styrene materials (wall-backing packing) m3 368 375 326 395 419
Water-saving toilet bowl thousand units 16 16 18 16 20
Rooftop and wall greening thousand m2 5 4 9 11 11
Permeable paving thousand m2 16 20 21 16 26
SUS piping (water supply piping in communal areas) tons 99 105 98 84 53
Hf inverter lighting equipment thousand units 15 18 24 39 50
Long vinyl sheets thousand m2 198 196 297 280 383
Extruded polystyrene foam thousand m3 － － 4 4 4
CFC-free urethane form thousand m2 － － － － 389
Green purchase rate of stationery % 91.0 92.3 93.1 93.8 93.9

* Upstream/downstream effects of green procurement have been calculated for extruded polystyrene foam since FY2016 and CFC-free urethane form since FY2018.