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110 2nd Avenue South #D7,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-79&1620 Fax 925-798-1622 <br />' http//www:nccarnpbellcom E-mail mamQmceampbell com <br /> • QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> BatchlD 2498 Matrix W WorkOrder 0206274 <br />' EPA Method SW8021 B/8015Cm Extraction SW5030B Ext Date 6118/02 Spiked Sample ID 0206274-002A <br /> Sample Spiked MS* MSD` MS-MSD' LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> Compound - <br />' pg/L pg/L %Rec %Rec %RPD %Rec A Rec %RPD Low High <br /> TPH(gas) NO 60 Its 116 134 113 111 10 80 120 <br /> MTBE 5 492 10 953 93 1 57 808 812 040 80 120 <br /> Benzene ND 10 95 6 968 128 103 96 3 6 3 80 120 <br /> Toluene ND 10 102 104 147 101 98 3 2 80 120 <br />' Ethylbcnzene ND 10 99 7 102 182 991 95 9 3 3 80 120 <br /> Xylenes ND 30 100 103 328 997 98 7 10 80� 120 <br />' %SS 105 10 105 105 4 218 989 100 1 2 80 120 <br /> All target compounds in the Method Blank of this extraction batch 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)I(Amount Spiked) RPD=100'(MS-MSD)I(MS+MSD)*2 <br />' *MS and I or MSD spike recoveries may not be near 100%or their RPDs near 0%it a)the sample is mhoniogeneous AND contains significant concentrations of <br /> . analyze relative to the amount spiked or b)if that specific sample matrix interferes with spike recovery <br /> 1 <br />