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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 /> http://www.nwc"bell.com E-mail:Tnain@niccampbelf.com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix; A WorkOrder: 0312468 <br /> ' EPA Method: SW8021B/8015Cm Extraction: SW50308 BatchlD:9833 Spiked Sample ID: NIA <br /> Sample Spiked MS' MSD* M,9-MSD- LCS LCSD LCS-LCSD Acceptance Criteria{%) <br /> pg/L lag/L % Rec. %Ree. %RPD %Rec. %Rec. %RPD Low High <br /> TPH(btex)£ N/A 60 N/A N/A NIA 90.8 85.9 5.57 70 130 <br /> t MTBE. N/A 10 NIA NIA N/A 93.9 90.5 3.65 70 130 <br /> Benzene NIA 10 N/A NIA N/A 101 98.4 2.66 70 130 <br /> Toluene NIA 10 N/A NIA N/A 105 101 3.39 70 130 <br /> Ethylbenzene N/A 10 N/A N/A N/A 106 97.7 8.27 70 130 <br /> Xylenes NIA 30 N/A NIA N/A 110 107 3.08 70 130 <br /> ' %SS: NIA 100 N/A NIA NIA 105 103 1.60 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 /> lie <br /> t I <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)I((MS+MSD)!2). <br /> i <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 coelutes with surrogate peak. <br /> NIA=not enough sample to perform matrix 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 /> analyte content. <br /> 1 , <br />