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110 2nd Avenue South #D7 Pacheco CA 94553 5560 <br /> McCampbell Analytical, Inc. Telephone 925-798-1620 Fax 935-798 1622 <br />' Wi.6stte www mccampbell coin Email mom a muampbell nom <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix W WorkOrder 0405315 <br /> EPA Method SW8021B18015CM Extraction SW5030B BatchlD 11604 Spiked Sample ID 0405300-001A <br /> Sample Spiked Ms. MSD' 'MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> p9IL Pg/L %Rec %Rec %RPD %Rec %Rec % RPD Low High <br /> TPJI(btex)£ ND 60 103 106 343 103 102 1 15 70 130 <br /> MTBE ND 10 109 969 119 110 105 5 17 70 130 <br /> Benzene ND 10 110 108 1 13 106 112 4 86 70 130 <br /> Toluene ND 10 118 108 8 89 109 102 669 70 130 <br /> Ethylbenzent, ND — 10 111 113 1 84 109 114 468 70 130 <br /> Xylenes ND 30 100 t00 0 100 110 952 70 130 <br />' °/uSS 969 10 105 104 1 02 979 105 7 18 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 />' TONE <br /> MS=Matrix Spike,MSD=Matrix Spike Duplicate LCS=Laboratory Control Sample LCSD=Laboratory Control Sample Duphcate RPD=Relative Percent <br /> Deviation <br /> %Recovery=100*(MS Sample)/(Amount Spiked) RPD=100'(MS- MSD)/((MS+MSD)/2) <br /> *MS and/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 BTEX 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 spike and matrix spike duplicate <br /> NR=analyte concentration in sample exceeds spike amount for sail matnx 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 />