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' 110 2nd Avenue South,tlD7 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-79&1620 Fax 925-798-1622 <br /> http//www mccampbell coin E mail mam@mccampbell com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> BatchlD 2101 Matrix W WorkOrder 0205399 <br /> EPA Method SW8021 B/8015Cm Extraction SW50308 Ext Date 5/29/02 Spiked Sample ID 0205399-004A <br /> Sample Spiked MS' MSD' MS-MSD <br /> Compound LCS LCSD LCS-LCSD Acceptance Criteria(°k) <br />' Ng/L pg/L %Rec %Rec -%/.,RPD %Rec °Re Rec %RPD Low High <br /> TPH(gas) ND 60 105 105 0 419 110 108 22 80 120 <br />' MTBE ND 10 887 86 3 02 917 967 53 80 120 <br /> Benzene ND 10 946 93 1 158 957 95 3 042 80 120 <br /> Toluene ND 10 97 6 96 1 1 53 100 987 13 80 120 <br />' Ethylbenzene ND 10 987 97 9 0 759 102 I01 12 80 120 <br /> Xylenes ND 30 99 953 377 103 103 0 80 120 <br />' %SS 105 10 105 <br /> 104 0 896 103 103 0 21 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 /> 1 • <br /> i <br /> 1 <br /> 1 <br /> 1 <br /> MS=Matrix Spike MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample,LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br /> IDeviation <br /> N/A=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)I(MS+MSD)`2 <br /> I `MS and 1 or MSD spike recoveries may not be near 100%or their RPDs near 0%if a)the sample is inhomogeneous AND contains significant concentrations of <br /> analyze relative to the amount spiked or b)if that spepfic sample matrix interferes with spike recovery <br /> I <br />