4

Data Regarding Environment Preservation

1. Entire Company
Input

EnergyOutput367,000 kl/year(Electric power: 62 %, Fuel: 38 %)Chemical substance,
handling volumeWorksandLaboratories

1,551 ton/year(Chemical substance, PRTR law applicable)

Water:

Industrial waste:

16,213 ton/year

Recycling:

27,826 ton/year

Wastewater:

25,000 thousand ton/year

28,700 thousand ton/year

Energy: Converted into crude oil
Water: Industrial water, clean water and well waterIndustrial waste: Excluding industrial waste to be recycled
Recycling: Including recycled industrial waste andvaluables converted from industrial waste

2. Major Works
Below is presented the data for atmospheric emission
and wastewater quality, including NOx, SOx and dust

from major production facilities for the former, and pH,COD, SS and oil mist (mineral oil) for the latter.

■Atmospheric Emission Data (April 2000 - March 2001)
Chiba Works

Fukui Works

Item
Facility
Controlled value by law Agreed value Measured value
Melting furnace
200
63<30NOx(ppm) Boiler
150
82
46~67.3SOx✽
58
58
3.2~24.9(ppm)
Dust
Melting furnace
0.2
0.013
0.009~0.012(g/Nm3) Boiler
0.25
0.010
0.0015~0.0019✽ Control by immutable weight

Mie Works

ItemNOx(ppm)

Facility
Controlled value by law Pref. tightened value Measured value
Melting furnace
180
120
3~86
Heating furnace
130
120
1~59
Annealing furnace
130
120
1~11
Boiler130
120
28~113
Melting furnace17.5(K value)
160
5~41
SOx(ppm) Boiler
17.5(K value)380
5or less
Dust
Melting furnace0.2
0.2
0.005~0.172
0.25
0.12
0.005~0.059(g/Nm3) Heating furnace
Annealing furnace
0.25
0.12
0.005~0.050
Boiler0.1
0.1
0.005~0.008Item
Facility
Controlled value by law Agreed value Measured value
Melting furnace
18026~59
NOx(ppm) Annealing furnace
1809~35
SOx
Melting furnace0.60.095(Nm3/h)Dust
Melting furnace
0.3
0.02~0.23(g/Nm3) Annealing furnace
0.2
<0.01

Nikko Works (Sheet Plant)

Nikko Works (Kiyotaki District)

Item
NOx(ppm)

Item
NOx(ppm)

Facility
Controlled value by law Pref. tightened value Measured value
Heating furnace
200
17~70
Melting furnace
200
75~170Boiler230
45~140
Heating furnace
17.5
14.5
0.03~0.21
SOx(K value) Melting furnace
17.5
14.5
0.26~2.15
Boiler
17.5
14.5
<0.10
Dust
Heating furnace
0.2
0.002~0.022
0.2
0.001~0.003(g/Nm3) Melting furnace
Boiler0.25
0.001~0.006

Gothic figure means averaged value

Facility
Controlled value by law Pref. tightened value Measured value
Melting furnace
18050~81
Heating furnace
20018
Annealing furnace
20026~27
Boiler230
69~101
Melting furnace
17.5
14.5
0.29~0.35
SOx(K value) Heating furnace
17.5
14.5
0.06
Annealing furnace
17.5
14.5
0.05~0.08
Boiler17.5
14.5
0.49~0.68
Dust
Melting furnace
0.3
0.03~0.04
0.25
0.05(g/Nm3) Heating furnace
Annealing furnace
0.25
0.03
Boiler0.25
0.05~0.08✽ Only major production facilities are shown.

11

4

Data Regarding Environment Preservation■Wastewater Quality Data (April 2000 - March 2001)
Chiba Works

Fukui Works

Item
pHCOD
(mg/ )
SS(mg/ )
Oil mist (mg/ )ItemControlled value by law
pH
5~9COD(mg/ )
600
SS(mg/ )
600
Oil mist (mg/ )5Controlled value by law Agreed value
5~95~925
1550
20102

Measured value
7.6~8.53~131~6.8
0.1~0.3

Pref. tightened value
5~9180 Note)5

Measured value
6.87~8.48
3~114
5~120
0.1~2.6

Note: (COD+0.4×SS) = 180

Mie Works
Item
pH
COD
(mg/ )SS(mg/ )Oil mist (mg/ )Gothic figure means averaged value

Controlled value by law Agreed value
5.8~8.6
5.8~8.6
160
10200
25
55

Measured value
7.38~7.67
1.49~4.53
1.14~1.91
0.14~0.16

Nikko Works (Sheet Plant)
Item
Controlled value by lawpH
5.8~8.6
COD(mg/ )160
SS(mg/ )200
Oil mist (mg/ )5Gothic figure means averaged value

Pref. tightened value
5.8~8.6
2550
5Measured value
7.1~8.1
2.2~3.0<0.1<1

Nikko Works (Kiyotaki District)
Item
pH
CODSS
Oil mist

Controlled value by law
5.8~8.6(mg/ )160(mg/ )200(mg/ )5

Pref. tightened value
5.8~8.6
2550
5Measured value
7.0~7.4
0.8~2.7
1.1~9.5
0.04~0.05

3. Environment-Related Accounting
Covered business bases: All Works excluding the Shinagawa Works
Covered period:
April 1, 2000 - March 31, 2001

Unit of amount: million yen

Cost of Environment Preservation
Category

Major contents(1) Cost of environment preservation to suppress environmental
Pollution prevention, global environment
impact caused by the production or service activities ofpreservation, resource recycling, etc.
business generated within the business area (In house cost)(2) Cost of environment preservation to suppress environmental
impact caused by the production or service activities of Retrieval and recycling of containers,
business generated within the upstream and downstream packaging, drums, etc.
areas of business area (Up- and down-stream cost)

Amount of cost

Economic Effects Associated with Environment Preservation
Measures
Content3,360

456

Amount(1) Income gained by recycling

169(2) Reduction in waste disposal
costs through recycling-28

Physical Effects Associated with Environment Preservation
Measures

Construction, maintenance and management(3) Cost of environment preservation associated with of environment managing system,
maintenance of environment preservation,
management activities (Management cost)measurement of environmental impact, etc.

452(4) Cost of environment preservation associated with research
Publication of information, greening, etc.
and development activities (Research and development cost)

ReductionEnvironmental impact

Quantity

420(1) Industrial waste(disposed of by landfills) (ton)

16,213-901

R&D of environment-friendly products,(5) Cost of environment preservation associated with social research in substitutes for toxic substances,
R&D of environmental impact reduction inactivities (Social activity cost)
manufacturing processes, etc.

36(2) Emission of volatile chemicalcompounds (ton)120

1Assessment for environmental impact,(6) Cost of environment preservation dealing with environmental
inquiries and measures for soil contamination
impact (Environmental impact cost)and groundwater, etc.

21

172,088

2,434(4) SOX (ton)71

3(5) NOX (ton)641

86(6) Dust (ton)80

43Total4,745*The amount of cost excludes investment cost.

Investment and Research Costs
Environment-related investment

3,788(Entire investment cost

48,100)(Entire research cost

15,300)12(3) CO2 (carbon ton)(over previous year)