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110 god Avenue South f1D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798 1622 <br /> littpWwwwrnecarMbellrom E-rr>ad main@mccarripbellcom <br /> • QC SUMMARY REPORT FOR SW8021B18015Cm <br /> I <br /> Matrix A WorkOrder 0309365 <br /> EPA Method SW8021BIB015Cm Extraction SW5030B BatchlD 8619 Spiked Sample ID NIA <br /> Sample Spiked MS' MSD' MS-MSD' LCS LCSD LCS-LCSD Acceptance Cntena(%) <br />' pg/L pg/L %Rec %Rec %RPD %Rec % Rec %RPD Low High <br /> TPH(btex) NIA 60 N/A N/A N/A 933 936 0 332 70 130 <br /> MTBE NIA 10 N/A N/A N/A 971 101 431 70 130 <br /> Benzene N/A 10 NIA N/A N/A 975 102 450 70 130 <br /> Toluene NIA 10 N/A N/A N/A 899 936 405 70 130 <br /> Ethylbenzene NIA 10 NIA N/A N/A 962 987 249 70 130 <br /> Xylenes N/A 30 N/A N/A N/A 86 90 455 70 130 <br /> %SS N/A 100 N/A N/A N/A 102 104 171 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 /> I NONE <br /> lie <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)/(MS+MSD)'2 <br /> MS and!or MSD spike recovenes 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 coelules with surrogate peak <br /> NIA=not enough sample to perform matrix spike and matrix spike duplicate <br /> NR=analyte concentraSion rn sample exceeds spike amount for sotl matrix or exceeds Zx spike amount for water matrix or sample diluted due to high matrix or <br /> aria a content <br />