Table A6. Sixth TCE study--Effect of a wash and oven drying on a pump exposed
to high levels of TCE.
Initial TCE concentration (mg/L) in well water
A
131
B
129
C
129
130
X
Desorbed TCE concentration (mg/L) in DI water after wash and hot air drying
DI water
(gal.)
Pump*
Tubing**
1
0.195
0.0056
1
0.215
0.0041
1
0.138
0.0031
0.183
0.0043
X
3
LD
0.0046
3
LD
0.0045
3
LD
0.0047
LD
0.0046
X
6
LD
0.0054
6
LD
0.0053
6
LD
0.0064
LD
0.0057
X
9
LD
0.0054
9
LD
0.0037
9
LD
0.0060
LD
0.0050
X
LD = Less than detection level
MDL = 0.0024 mg/L
* One gallon equals eight pump volumes pumped through pump.
** One gallon equals 1.3 tubing volumes flushed through tubing.
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