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South <br /> McCampbell Analytical, Inc. 110 2nd 925-79 f{16 Pacheco,25 94-1622 60 <br /> Telephone 925-798 1620 Fax 925-798-k622 <br /> Website www mecampbell cont L-mail main@mccampbeil com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix W WorkOrder 0402359 <br /> EPA Method SW8021B18015Cm Extraction SW5030B BatchlD 10494 Spiked Sample 1D 0402345-002A <br /> Sample Spiked MS' MSD' MS-MSD' LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> pg1L pglL %Rec %n Rec %RPD %Rec %Rec %RPD Low High <br /> TPH(btex)c ND 60 111 106 505 109 110 101 70 130 <br /> MTBE ND 10 98 962 185 864 E68 0 427 70 130 <br /> Benzene NO 10 111 110 1 27 104 106 237 70 130 <br /> Toluene ND 10 108 106 159 105 107 169 70 130 <br /> Ethylbenzene ND 10 114 1 l 1 287 106 107 131 70 130 <br /> Xylenes ND 30 107 100 645 107 110 308 70 130 <br />' %SS 892 10 105 103 142 86 2 88 I j 2 14 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 /> 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)I(Amount Spiked) 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%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 enough sample to perform matrix spike and matrix spike duplicate <br /> . NR W analyte concentration in sample exceeds spike amount for soil matrix or exceeds 2x spike amount for water matnx or sample diluted due to high matrix or <br /> analyte content <br />' DHS Certification No 1644 L- QA/QC Officer <br />