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Levine-F4c e•Recon <br /> Section:Table C-4 <br /> Date Initiated: September 23, 1996 <br /> Revision No.:6 <br /> Date Revised: October 16, 1998 <br /> Table C-4: Quanterra Method QC Criteria Page 7 of 8 <br /> Lincoln Center, Stockton, California <br /> Criteria' <br /> Groundwater from Treatment System <br /> Method QC Issue MW/PIPP Sampling Monitoring Comments <br /> VOCs in Soil, Surrogate(% Recovery) for samples, Standards 59- 113% N/A 4-Bromo0uorobenzene . <br /> EPA 8260A3 &Blanks <br /> 70- 121% 1,2-Dichloroethane-d, <br /> 84- 138% Toluene-d8 <br /> Laboratory and Duplicative Control Samples 65 - 135% N/A 1,1-Dichloroethene <br /> (% Recovery) <br /> 65 - 135 Benzene <br /> 65 - 135 Trichloroethene <br /> 65- 135 Toluene <br /> 65 - 135 Chlorobenzene <br /> Laboratory and Duplicative Control Samples 35% N/A 1,1-Dichloroethene <br /> (Relative % Difference) <br /> 35 Benzene <br /> 35 Trichloroethene . <br /> 35 Toluene <br /> 35 Chlorobenzene <br /> Sensitivity Approximately N/A MDLs will be analyte and matrix dependent. <br /> (MDL according to 40 CFR, Part 136, App B) 5 µg/kg <br /> RIFS-QAPP-TBLC-4-REV6-04111:5RL Page 7 018 <br /> 10/15/98 <br />