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i <br /> 110 2nd Avenue South iID7 Pacheco CA 94553-5560 <br /> Inc.McCampbell Analytical, Telephone 925-798-1620 Fax 925-798-1622 <br /> IWebsite www mecampbetl corn E-mail mam@mccampbell com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matnx W WorkOrder 0403246 <br /> IEPA Method SW8021 B18015Cm Extraction SW5030B BatchlD 10767 Spiked Sample ID 0403242-009A <br /> Sample Spiked MS' MSD' MS-MSD' LCS LCSD LCS-LCSD Acceptance Cnteria <br /> I pg/L pg/L %Rec %Rec %RPD %Rec %Rec %RPD Low High <br /> TPH(btex)a ND 60 106 100 553 102 102 0 70 130 <br /> M 013E ND 10 105 112 603 100 103 223 70 130 <br /> Benzene ND 10 117 117 0 110 113 222 70 130 <br /> Toluene ND 10 107 110 2 17 103 104 0 926 70 1 130 <br />' Ethylbenzene ND 10 112 113 0 712 109 110 1 22 70 130 <br /> Xylenes ND 30 100 100 0 96 100 408 70 130 <br />' %SS l01 10 110 107 254 106 106 0 70 130 <br /> All target compounds to 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 /> MS=Matrix Spike,MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br /> Deviation <br /> %Recovery=100'(MS-Sample)/(Amount Spiked) RPD=100'(MS- MSD)/((MS+MSD)/2) <br /> MS and 1 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 /> N/A=not enough sample to perform matrix spike and matrix spike duplicate <br /> NR=analyte concentration in sample exceeds spike amount for soil matnx or exceeds 2x spike amount for water matrix or sample diluted due to high matnx or <br /> analyte content <br />' DHS Certification No 1644 I1— QA/QC Officer <br />