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' 1102nd Avenue South,#D7,Pacheco CA 94553-5560 <br /> McCampbell Analytical, Inc. Telephone 925-798-1620 Fax 925-798-1622 <br /> Website www rrecampbell corn E-mail main@inceampbell com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> I <br /> Matrix W WorkOrder 0405480 <br />' EPA Method SW8021 B/8015Cm Extraction SW5030B BatchlD 11755 Spiked Sample 1D 0406004-002A <br /> Sample Spiked MS* MSD' MS-MSD* LCS LCSD LCS-LCSD Acceptance Cntena N <br /> pglL pg/L %Rec %Rec %RPD %Rec % Rec % RPD Low High <br /> I TPH(btex)a ND 60 101 101 0 98 8 100 1 53 70 130 <br />' MTBE ND 10 113 115 1 89 111 112 0 803 70 130 <br /> Benzene ND t0 110 112 2 12 113 112 0 504 70 134 <br /> Toluene ND to 105 106 1 49 108 106 197 70 130 <br />' Ethylbenzene ND 10 111 112 0 498 112 112 0 74 130 <br /> Xylenes ND 30 100 100 0 100 100 0 70 130 <br />' %SS i 105 10 102 102 0 105 104 0 295 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 />' MS=Matnx Spoke,MSD=Matnx Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duplicate RPD=Relative Percent <br /> Deviation <br /> %Recovery=100'(MS-Sample)/(Amount Spoked) RPD=100*(MS- MSD)I((MS+MSD)12) <br /> MS and 1 or MSD spike recoveries may not be near 100%or the RPDs near 0%of a)the sample is inhomogenous AND contains significant concentrations of <br /> analyte relative to the amount spiked or b)if that specrfoc sample matrix interferes with spoke recovery <br /> £TPH(btex)=sum of BTEC(areas from the FID <br /> #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> N/A=not applicable or not enough sample to perform matrix spoke and matrix spoke duplicate <br /> NR=analyte concentration on sample exceeds spoke amount for soil matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or <br /> analyte content <br /> DHS Certification No 1644 QA/QC Officer <br /> 1 <br />