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Table 11 <br /> Dual Phase Extraction System -Groundwater Analytical Data <br /> Parcel 2A-L&M OU <br /> 666 West Weber Avenue, Stockton, CA <br /> HEM Ethyl- Total <br /> Date TRPH w/SGT TPHg TPHd TPHo Benzene Toluene benzene Xylenes MtBE DIPE ETBE TAME TBA <br /> Sampled Sample ID Notes pH (mg/L) (mg/L) (Ng/L) (ug/L) (Ng/L) (pg/L) (Ng/L) (Ng/L) (ug/L) (Ng/L) (pg/L) (Ng/L) (Ng/L) (Ng/L) <br /> Notes(continued): <br /> 22 =Matrix Spike/Matrix Duplicate results associated with sample GW-INF for the analytes Methyl-t-butyl ether and Tert-Butanol were affected by the analyte concentrations <br /> already present in the un-spiked sample. <br /> 23 =Surrogate Recovery for sample MID-1 for test method Mod. EPA 8015 ws outside of control limits. This may indicate a bias in the analysis due to the sample's matrix <br /> or an interference from compounds present in the sample. <br /> 24 =Matrix Spike/Matrix Spike Duplicate results for the analyte MtBE were affected by the analyte concentrations already present in the un-spiked sample. <br /> 25 =On August 28,2010 the system was automatically shut down due to the failure of the transfer pump for the first oil-water separator(OWS#1). The system was restarted on <br /> October 4,2010 after repairs and upgrades were completed. <br /> 26 =OWS#1 was removed from the system treatment train,with the second oil water separator(OSW#2)being the sole oil water separator in operation. <br /> 27 =There is no longer a MID-5,due to the removal of OWS#1 from the treatment train leaving six sample ports. <br /> \\Us1345-f01\secor\projects-077\Tidewater\TW Stockton(Parcel 2A-0415)\Engineering\O&M\Tables\O&M Tables 2010\4Q10\Parcel 2A OM Tables 4Q10.xlsx Page 14 of 14 <br />