Annual Benzene Summary for Burbank-W Palm Avenue

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ARB:

AQD:


	Annual Toxics Summary
	Burbank-W Palm Avenue
	Benzene
	parts per billion

Year

Months
Present

Minimum

Median

90th
Percentile

Maximum

Standard
Deviation

Number of
Observations

Detection
Limit

Estimated
Risk

2002

0.21

0.71

1.01

2.1

2.6

0.656

31

0.05

93

2001

0.39

0.8

1.06

1.9

3.8

0.814

30

0.05

98

2000

0.4

1.1

1.27

2.6

3.0

0.75

29

0.2

117

1999

0.1

1.3

1.64

3.3

4.4

1.12

29

0.2

151

1998

0.1

1.4

1.66

3.1

4.0

0.93

29

0.2

154

1997

0.5

1.4

1.48

2.9

3.9

0.93

30

0.2

137

1996

0.25

1.8

1.91

2.8

7.4

1.26

30

0.5

177

1995

0.25

2.3

2.45

3.7

6.7

1.43

31

0.5

227

1994

0.25

3.2

3.33

4.8

7.7

1.61

29

0.5

308

1993

0.25

2.2

2.63

4.5

5.5

1.33

33

0.5

244

1992

1.0

3.2

3.44

5.6

6.3

1.45

30

0.5

319

1991

0.25

3.4

3.91

7.5

8.4

2.37

29

0.5

362

1990

2.0

3.9

4.79

8.4

10

2.32

31

0.5

444

1989

1.7

4.8

10.9

11

3.13

12

0.5



	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.