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1102nd Avenue South #D7 Pacheco CA 94553-5560 <br /> 4 1 McCampbell Analytical, Inc. Telephone 925-798 1620 Fax 925-798-1622 <br /> Website www mccan>pbel]com E mail mamQmecampbell com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matnx W WorkOrder 0406263 <br /> EPA Method SW8021B/8015Cm Extraction SW5030B BatchlD 11966 Spiked Sample ID 0406263-004A <br /> Sample Spiked MS' MSD' MS-MSD' LCS LCSD LCS-LCSD Acceptance Cntena (%) <br /> pg/L lig/L %Ree %Rec %RPD % Rec %Rec % RPD Low High <br /> TPH(btex)£ ND 60 944 966 237 979 962 176 70 130 <br /> MTBE ND 10 111 104 701 112 112 0 70 130 <br /> Benzene ND 10 1 114 112 1 84 110 109 123 70 130 <br /> Toluene ND 10 110 106 350 107 102 475 70 130 <br /> Ethylbenzene _ T ND 10 211 109 1 16 107 107 0 70 130 <br /> Xylenes ND 30 96 957 0 348 95 917 357 70 130 <br /> %SS 101 10 108 107 154 106 105 147 70 130 <br /> All target compounds in the Method Blank of this extraction batch were ND less than the method R1,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•WS-Sample)/(Amount Spiked) RPD=100•(MS- MSD)/((MS+MSD)/2) <br /> MS and I 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 applicable or not enough sample to perform matrix spike and matrix spike duplicate <br /> NR=analyte concentration in sample exceeds spike amount for sod matnx or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or <br /> analyte Content <br /> DHS Certification No 1644 ---—QA/QC Officer <br />