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110 2nd Avenue South 4D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br />' A# I http I/www mccampbell com E-mail mam@rnecampbell corn <br /> i <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> BatchlD 2681 Matnx W WorkOrder 0206465 <br />' EPA Method SW8021 B/8015Cm Extraction SW5030B Ext Date 6/28/02 Spiked Sample ID 0206465-005A <br /> Sample Spiked NIS* MSD* MS-MSD- LCS LCSD LCS-LCSD Acceptanoe Criteria(%} <br /> Compound <br /> pg/L pg/L % Rec %Rec %RPD %Rec %Rec %RPD Low High <br /> TPH(gas) ND 60 103 108 461 102 104 20 80 120 <br />' MTBE ND 10 807 833 3 11 809 893 98 80 120 <br /> Benzene ND 10 926 912 1 52 873 903 3 3 80 120 <br />' Toluene ND 10 943 942 00861 903 99 6 9 9 80 120 <br /> Ethylbenzene ND 10 961 955 0 619 912 91 9 070 80 120 <br /> Xylenes ND 30 95 95 0 93 7 99 5 5 80 120 <br />' %SS 102 10 102 101 0 814 101 100 060 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 /> I <br /> MS=Matrix Spike MSD=Matnx 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%if a)the sample is inhomogeneous AND contains significant concentrations of <br /> analyze relative to the amount spiked or b)if that specific sample matrix interferes with spike recovery <br /> I ' <br />