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South 110 2nd Avenue 25-79 -162 Pacheco,CA 98-1622560 -F McCampbell Analytical, Inc. Telephone 1 Fax Website:www.mccampbell.can E-mail:main©mccmnpbell.com QC SUMMARY REPORT FOR SW8021B/8015Cm Matrix: S WorkOrder: 0409241 EPA Method: SW8021B/8015Cm Extraction: SW5030B BatchlD:13156 Spiked Sample ID: 0409204-097A V Sample Spiked MS' MSD' MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) Analyte mg/Kg mg/Kg %Rec. %Rec. %RPD %Rec. %Rec. %RPD Low High TPH(btex)e ND 0.60 94.8 95.9 1.13 118 96.4 20.3 70 130 MTBE ND 0.10 83.6 86.9 3.91 99.7 96.9 2.85 70 130 ----------- _ _ _. _. i -_ Benzene ND 0.10 99.6 101 1.03 116 97.5 17.2 70 130 Toluene ND 0.10 80.5 82.1 1.94 107 82.1 26.7 70 130 i. Ethylbenzene ND 0.10 101 102 1.50 118 97 19.3 70 130 Xylenes ND 0.30 89.7 90 0.371 110 85.7 24.9 70 130 %SS: 89.6 0.10 104 104 0 110 102 7.69 70 130 r All target wmpounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions: NONE t. r r MS=Matrix Spike;MSD=Matrix Spike Duplicate;LCS=Laboratory Control Sample;LCSD=Laboratory Control Sample Duplicate;RPD=Relative Percent Deviation. %Recovery=100'(MS-Sample)/(Amount Spiked);RPD=100•(MS- MSD)/((MS+MSD)/2). - 'MS/MSD spike recoveries and/or%RPD may fall outside of laboratory acceptance criteria due to one or more of the following reasons:a)the sample is inhomogenous AND contains significant concentrations of analyte relative to the amount spiked,or b)the spiked samples matrix interferes with the spike recovery. E TPH(btex)=sum of BTEx areas from the FID. 4 #cluttered chromatogram;sample peak coelutes with surrogate peak. N/A=not enough sample to perform matrix spike and matrix spike duplicate. NR=analyte concentration in sample exceeds spike amount for soil matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or r analyte content. DHS Certification No. 1644 AQAIQC Officer