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{� 110 2nd Avenue South,#D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical, Inc. Telephone 925 798-1620 Fax 925-798-1622 <br /> Website www mccampbell com Email main®mccampbell corn <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix W WorkOrder 0406291 <br /> EPA Method SW8021B/8015Cm Extraction SW5030B BatchlD 12003 Spiked Sample ID 0406300-OOIA <br /> Sample Spiked MS' MSD' MS-MSD' LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> pg/L )1g/L %Rec %Rec %RPD %Rec %Rec %RPD Low High <br /> TPH(btex)e ND 60 968 982 140 957 982 254 70 130 <br />' MTBE — ND 10 109 112 235 113 115 1 29 70 130 <br /> Benzene ND 10 115 119 292 107 110 2 10 70 130 <br /> Toluene ND 10 109 111 2 10 100 103 330 70 130 <br />' Ethylbenzene ND 10 113 117 3 34 106 108 1 95 70 130 <br /> Xylenes ND 30 100 100 0 91 3 95 394 70 130 <br />' %SS 103 10 107 106 106 105 104 0 672 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 />' NONE <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)1((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 ceeiutes with surrogate peak <br /> NIA=not applicable or not enough sample to perform matnx spike and matrix spike duplicate <br /> 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 <br />' anal a content <br /> DHS Certification No 1644 QA/QC Officer <br />