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Table 6.1: Estimates of benzene risk to populations in Auckland, Christchurch, Hamilton and Dunedin

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  Estimated annual average benzene µgm-3 Population Estimated no. of people at
4.4 x 10-6
Estimated no. of people at
7.5 x 10-6
Estimated no. of people at
8.3 x 10-6
Estimated no. of people at
29 x 10-6
Percent of population effected based on
7.5 x 10-6

Auckland

2.8

791,000

10

17

18

64

0.002%

Christchurch

3.3

280,000

4

7

8

27

0.002%

Hamilton

2.5

115,000

1

2

2

8

0.002%

Dunedin

1.9

90,000

1

1

1

5

0.001%