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1 <br /> 110 2nd Avenue South 91)7,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mecampbell com E-mail mam@mecampbell com <br /> • QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix W WorkOrder 0207204 <br />' EPA Method SW8021 B/8015Cm Extraction SW5030B BatchlD 2969 Spiked Sample ID 0207203-002A <br /> Sample Spiked MS* MSD* MS-MSD" LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> Compound <br />' pg/L pg/L % Rec %Rec %RPD %Rec %Rec %RPD Low High <br /> TPH(gas) ND 60 106 105 0 680 104 I08 1 434 80 120 <br />' MTBE ND 10 902 93 8 390 969 1 958 1 13 80 120 <br /> Benzene ND t0 104 107 3 28 111 101 953 80 120 <br /> Toluene ND 10 107 110 267 112 103 7 97 80 120 <br /> Ethylbenzene ND 10 III 113 173 Ila 107 524 80 120 <br /> Xylenes ND 30 113 113 0 110 107 308 80 120 <br />' %SS 105 100 I03 105 189 109 975 112 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 />'• <br /> I <br /> MS=Matrix Spike MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br /> Deviation <br /> N/A=not enough sample to perform matnx spike and matrix spike duplicate <br /> NR=analyte concentration to sample exceeds spike amount for sod matnx or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or <br /> 0 analyte content <br /> %Recovery=100*(MS-Sample)/(Amount Spiker,RPD=104*(MS—MSD)/(MS+MSD)*2 <br /> *MS and/or MSD spike recoveries may not be near 100%or the RPDs near 0%it a)the sample is inhomogenous AND contains significant concentrations of <br /> analyte relative to the amountspiked or b)if that specific sample matrix interferes with spike recovery <br />