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• <br />r. <br />• <br />110 2nd Avenue South #D7 Pacheco, CA 94553-5560 <br />McCampbell Analytical Inc Telephone 925-79$-1620 Fax 925-798-1622 <br />http Ilwww mccampbel l com E mad main(@mccampbell com <br />QC SUMMARY REPORT FOR SW8260B <br />BatchfD 2025 Matrix W WorkOrder 0205332 <br />EPA Method SW8260B Extraction SW5030B Ext Date 5/23/02 Spiked Sample ID NIA <br />Compound <br />Sample <br />Spiced <br />MS' <br />MSD" <br />MS -MSD* <br />LCS <br />LCSD <br />ILLS-LCSE) Acceptance Cnteria (%) <br />pg/L <br />pg/L <br />% Rec <br />% Rec <br />% RPD <br />% Rec <br />% Rec <br />% RPD Low <br />High <br />Dnsopropyl ether (DIPE) <br />N/A <br />10 <br />N/A <br />N/A <br />N/A <br />115 <br />117 <br />095 <br />70 <br />130 <br />Ethyl tert-butyl ether (ETBE) <br />NIA <br />10 <br />N/A <br />NIA <br />N/A <br />115 <br />115 <br />026 <br />70 <br />130 <br />Methyl -t -butyl ether (MTBE) <br />N/A <br />10 <br />N/A <br />NIA <br />N/A <br />113 <br />112 <br />034 <br />70 <br />130 <br />tert-Amyl methyl ether (TAME) <br />N/A <br />10 <br />N/A <br />N/A <br />N/A <br />112 <br />112 <br />038 <br />70 <br />130 <br />°/aS5 <br />N/A <br />10 <br />N/A <br />N/A <br />NIA <br />105 <br />104 <br />10 <br />70 <br />130 <br />All target compounds in the Method Blank of this extraction hatch were ND less than the method RL with the following exceptions <br />NONE <br />MS = Matrix Spike MSD = Matrix Spike Duplicate LCS = Laboratory Control Sample, LCSD = Laboratory Control Sample Duplicate, RPD = Relative Percent <br />Deviation <br />NIA = not enough sample to perform matrix spike or analyte concentration in sample exceeds spike amount <br />% Recovery = 100 ' (MS -Sample) / (Amount Spiked) RPD = 100 " (MS — MSD) / (MS + MSD) . 2 <br />MS and I or MSD spike recoveries may not be near 100% or the RPDs near 0% if a) the sample is inhomogenous AND contains significant concentrations of <br />analyte relative to the amount spiked or b) if that specific sample matrix interferes with spike recovery <br />Laboratory extraction solvents such as methylene chloride and acetone may occasionally appear in the method blank at low levels <br />