EarthWorks Environmental -

Location:	California North Coast Treatment: Bio Enhanced Surfactant
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, free product some sections where trapped in plastic
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: 1 ppm). Non-detect for MTBE in all samples (Sensitivity 100ppb). Sixteen samples showed varying levels of BTEX (Sensitivity at 100ppb), the highest of which was 280 PPB total Xylenes in one sample. After two weeks of additional residence time at flag locations retest proved non-detect.

If you have any questions or concern regarding this website please

contact the webmaster.