Seiko Instruments Inc.

Social and Environmental Activities

Environmental Report

Environmental Performance

Results of Water-Quality and Air-Quality Measurements

Water-Quality Measurements

Units: mg / liter; pH; parts per cubic meter
ND: Not detected
Dash ("- ") indicates that the item is not regulated or was not measured.
Values: Highest measurements
    Regulated Substance Takatsuka Unit Ohno Unit SII Crystal Tecnology Sendai Unit Morioka Seiko Instruments Inc. Akita Unit
Results of Water-Quality and Air-Quality Measurements 1 pH 7.0 - 7.7 7.7 - 8.3 6.9 - 7.6 6.8 - 7.4 7.0 - 7.7 6.5 - 7.3
2 BOD 7.2 4.5 5.2 66 8.7 10
3 COD 11
4 Suspended solids 10 6 2 4 2 13
5 n-Hex ND ND ND 3.7 ND ND
6 Phenols ND ND ND ND ND
7 Copper 0.05 0.02 ND 0.03 0.03
8 Zinc 0.13 0.11 ND 0.1 0.096
9 Iron 0.24 0.08 0.11 0.21 0.06
10 Manganese 0.11 ND ND 0.21 ND
11 Total chromium ND 0.04 ND ND ND
12 Number of coliform group ND ND ND ND 90
13 Nitrogen 25 18 22
14 Phosphorus 0.41 1.4 ND
Results of Water-Quality and Air-Quality Measurements 1 Cadmium ND ND ND ND ND
2 Cyanogen ND ND ND ND ND ND
3 Organic phosphorus ND ND ND ND ND
4 Lead ND ND ND ND ND ND
5 Hexavalent chromium ND ND ND ND ND
6 Arsenic ND ND ND ND ND
7-1 Total mercury ND ND ND ND ND
7-2 Alkyl mercury ND ND ND ND
8 PCB ND ND ND ND ND
9 Trichloroethylene ND ND ND ND ND
10 Tetrachloroethylene ND ND ND ND ND
11 Dichloromethane ND ND ND ND ND
12 Carbon tetrachloride ND ND ND ND ND
13 1,2-dichloroethane ND ND ND ND ND
14 1,1-dichloroethylene ND ND ND ND ND
15 dichloroethylene ND ND ND ND ND
16 1,1,1-trichloroethane ND ND ND ND ND
17 1,1,2-trichloroethane ND ND ND ND ND
18 1,3-dichloropropane ND ND ND ND ND
19 Thiuram ND ND ND ND ND
20 Simazine ND ND ND ND ND
21 Thiobencarb ND ND ND ND ND
22 Benzene ND ND ND ND ND ND
23 Selenium ND ND ND ND ND
24 Boron 0.07 0.14 0.28 1.65 0.04
25 Fluorine 1.3 0.3 0.5 1.2 ND ND
26 Ammonia, Ammonia compounds, Nitrous acid compounds, Nitrates 23 0.03 8.8 1.5 7.1 1.5



Air-Quality Measurements

ND: Not detected
Dash ("- ") indicates that the item is not regulated or was not measured.
Values: Highest measurements
Regulated Substance Takatsuka Unit Ohno Unit SII Crystal Tecnology
Sendai Unit Morioka Seiko Instruments Inc. Akita Unit
Particulate matter (g/m3N) ND ND ND ND ND
SOx (m3N/h) ND ND ND ND ND
NOx (ppm) 19.8 44.5 37 62 84