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110 2nd Avenue South,#137 Pacheco,CA 94553-5560 <br /> McCampbell Analytical, Inc. Telephone 925-798-1620 Fax 925-798-1622 <br /> Website www mccampbell cam E-mail mam t@rnccampbell cum <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix W WorkOrder 0406263 <br /> EPA Method SW8021B/8015Cm Extraction SW5030B BatchtD 11979 Spiked Sample ID 0406264-015A <br /> Sample Spiked MS' MSD' MS-MSD' LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> pg/L pg/L %Rec %Rec %RPD %Rec %Rec % RPD Low High <br /> TPH(btex)£ ND 60 947 966 202 973 961 I 25 70 130 <br /> MTBE ND 10 100 103 259 112 101 106 70 130 <br /> Benzene ND 10 106 109 2 12 110 105 4 87 70 130 <br /> Toluene ND 10 984 102 339 104 986 5 22 70 130 <br /> Ethylbenzene ND 10 107 107 0 108 104 3 58 70 130 <br /> Xylenes T ND 30 953 95 0 350 95 3 913 429 70 130 <br /> °/asS 108 10 107 107 0 106 104 1 45 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 m 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)/((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 /> E TPH(btex)=sum of BTEX areas from the RD <br /> #cluttered chromatogram sample peak eoelutes 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 soil matnx 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 />