|
Location:
|
California North Coast |
|
Volume of soil:
|
1915 yd3 |
|
Contamination type(s):
|
Gasoline and MTBE |
|
Average level of contamination:
|
306
PPM gasoline; 31 PPM MTBE |
|
Peak levels of contamination:
|
Measured at over 7000 PPM, but some sections saturated with contaminant
liquid |
|
Elapsed time for project:
|
Fifteen days |
|
Elapsed time after completion
prior to collecting confirmation samples:
|
Twenty days |
|
Number of confirmation samples
collected:
|
38 |
|
Results from confirmation
testing:
|
Non-detect for
gasoline in all samples (sensitivity at parts-per-million).
Non-detect for MTBE in all samples (sensitivity at
parts-per-billion). Sixteen samples showed varying levels of BTEX
(sensitivity at parts-per-billion), the highest of which was 280 PPB
total Xylenes in one sample. After two weeks of additional
residence time, retest proved non-detect. |
