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110 2nd Avenue South 4D7 Pacheco,CA 94553 5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> Ihttp-//www mccampbell com E-mail main@mccampbell com <br /> QC SUMMARY REPORT FOR SW8021B/8015Cm <br /> Matrix W WorkOrder 0305230 <br /> EPA Method SW8021 B/8015Cm Extraction SW5030B BatchlD 6923 Spiked Sample ID 0305228-028A <br /> Sample Spiked MS' MSD" MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> Compound <br /> pg/L pg/L % Rec %Rec %RPD %Rec %Rec %RPD Low High <br /> TPH(btex)£ ND 60 962 965 0 258 97 962 0 844 70 130 <br /> MTBE ND 10 982 961 2 13 105 945 108 70 130 <br /> Benzene ND 10 945 932 141 949 924 2 73 70 i 130 <br /> Toluene ND 10 984 981 0 347 991 97 1 2 13 70 130 <br /> Ethylbenzene ND 10 991 983 0 802 997 973 241 74 130 <br /> Xylenes ND 30 103 100 3 28 107 100 645 70 130 <br /> %SS 104 100 101 101 0 100 101 0 959 80 120 <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)/(Amount Spiked) RPD=100"(MS—MSD)1(MS+MSD)'2 <br /> -MS and/or MSO 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 /> ft cluttered chromatogram sample peak coelutes with surrogate peak <br /> N/A=not enough sample to perform matrix spike and matrix spike duplicate <br />' NR=analyte concentration in sample exceeds spike amount for sod matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix or <br />