Annual Benzene Summary for Santa Barbara-W Carillo Street

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ARB:

AQD:


	Annual Toxics Summary
	Santa Barbara-W Carillo Street
	Benzene
	parts per billion

Year

Months
Present

Minimum

Median

90th
Percentile

Maximum

Standard
Deviation

Number of
Observations

Detection
Limit

Estimated
Risk

2002

0

2001

0

2000

0.4

1.2

0.38

5

0.2

1999

0.1

0.4

0.79

1.6

1.9

0.58

30

0.2

73

1998

0.3

0.6

0.81

1.5

2.3

0.48

30

0.2

75

1997

0.1

0.8

0.95

1.7

2.6

0.56

29

0.2

88

1996

0.25

0.25

0.73

1.5

2.9

0.65

30

0.5

68

1995

0.25

0.8

0.91

1.8

2.7

0.71

29

0.5

84

1994

0.25

1.2

1.33

2.2

3.3

0.73

30

0.5

123

1993

0.25

1.0

1.18

2.1

2.4

0.71

31

0.5

109

1992

0.25

1.3

1.42

3.0

3.6

0.97

28

0.5

131

1991

0.8

1.4

1.90

4.0

4.8

1.25

34

0.5

175

1990

0.8

2.4

2.78

4.7

6.5

1.51

27

0.5

258

1989

0.8

1.8

2.78

4.7

7.6

1.79

22

0.5

257



	Notes:	Values below the Limit of Detection (LoD) assumed to be ½ LoD. Means and risks shown only for years with data in all 12 months. Risks shown only for those substances with unit risk factors.