Analysis

Concentration mg/l

Time min

event

1

50.00

7 - 8

After start of air lift pumping

2

4 .00

8 - 10

120 min after start of air lift pumping

3

0.0

10 - 15

300 min after start of air lift pumping

4

0 .0

15 - 19

240 min

12 hours during final Inspection