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110 2nd Avenue South #D7 Pacheco,CA 94553-5560 <br />' :M:C:( <br /> alnpbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> http/lwww mccampbell com E-mail main@mccampbell com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix W WorkOrder 0309340 <br />' EPA Method SW8021B/8015Cm Extraction SW5030B Batch(D 8603 Spiked Sample ID 0309344-009A <br /> SampleSpiked MS* MSD* MS-MSD LCS LCSD LCS-LCSD Acceptance Critena(%) <br />' pg/L ug/L % Rec % Rec %RPD %Rec %Rec %RPD Low High <br /> TPH(btex)E ND 60 105 102 283 958 989 3 12 70 130 <br />' MTBE ND 10 109 105 403 937 101 769 70 130 <br /> Benzene ND 10 105 106 —0712 992 IO2 3 43 70 130 <br /> Toluene ND 10 973 97 0 337 913 93 181 70 130 <br /> Ethylbenzene ND 10 104 104 0 995 103 3 18 70 130 <br /> Xylenes NI) 30 953 953 0 903 947 468 70 130 <br /> %$$ 106 I00 102 f04 156 103 102 4135 70 130 <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 /> t <br /> 1 <br /> I <br /> I MS=Matrix Spike MSD=Matrix Spike Duplicate, LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br /> Deviation <br /> %Recovery=100*(NIS-Sample)/(Amount Spiked) RPD=100*(MS—MSD)I(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 /> . £TPH(btex)=sum of STEX areas from the FID <br /> #cluttered chromatogram sample peak coelutes with surrogate peak <br /> NIA=not enough sample to perform matrix spike and matrix spike duplicate <br /> NR=anatyte concentration in sample exceeds spike amount for sod matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or <br /> analyte content <br />