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Table 3. Simulated Time in Years for TCE Contamination to Reach Critical Locations.

Concentration

Model

A

B

C

D

E

1%

of Source Concentration

1D

2.3**

5.6

8

19

42

2D

2.6

6.5

10

24

52.5

5%

of Source Concentration

1D

3.1

6.3

9.3

21.6

47

2D

4.7

9.8

15

34.5

76

10%

of Source Concentration

1D

3.7

7.2

10.3

23.2

49.2

2D

7

17

4*

4

4

20%

of Source Concentration

1D

5

9

12

26

53

2D

4

4

4

4

4

A - The boundary of the OSP property (x = 1140 ft).

B - 24th Street in the residential area (x = 1960 ft).

C - Half mile down-gradient (x = 2640 ft).

D - One mile down-gradient ( x = 5280 ft).

E - Willamette River ( x = 10400 ft).

* - 4 implies that TCE may not reach the specified location at this concentration level.

** - in years.


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