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110 2nd Avenue South,#D7 Pacheco,CA 94553-5560 <br /> McCampbell Analytical,, Inc. Telephone 925-798-1620 Fax 925-798 I622 <br /> Web57tL %vww mccampbell corn E mail main@ ccampb6l coni <br /> • QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix W WorkOrder 0406263 <br /> EPA Method SW8021B/8015Cm Extraction SW5030B BatchlD 11979 Spiked Sample ID 040626,4-015A <br /> Sample Spiked MS* MSD* MS-MSD* LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> pg/L lrg/L %Rec %Rec %RPD % Rec % Rec % RPD Low High <br /> TPH(btex)E ND 60 947 966 202 973 961 125 70 130 <br /> MTBE ND 10 100 103 258 112 101 106 70 130 <br /> Benzene ND 10 106 109 212 110 105 487 70 130 <br /> Toluene ND 10 984 102 3 39 104 986 522 70 130 <br /> Ethylbenzene ND 10 107 107 0 108 104 358 70 130 <br /> Xylenes ND 30 953 95 0 350 953 913 429 70 130 <br /> %5S 108 10 107 107 0 106 104 145 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 /> 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- MSI])/((MS+MSD)12) <br /> *MS and/or MSO 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 applicable or not enough sample to perform matrix spike and matrix spike duplicate <br /> NR=analyte 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 /> anal o content <br /> DHS Certification No 1644 QA/QC Officer <br />