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110 2nd Avenue South 4137 Pacheco CA 94553--)560 <br /> McCampbell Analytical Inc I Telephone 925-798-1620 Fax 925 798-1622 <br /> http I/www mccainpbell corn E marl main rr mccampt ell corn <br />' QC SUMMARY REPORT FOR SW8260B <br />' Matrix W WorkOrder 0307250 <br /> EPA Method SW8260B Extraction SW5030B BatchlD 7826 Spiked Sample ID 0307243-010C <br /> Sample Spiked MS' MSD' MS-MSD LCS LCSD jLCS-LCSD Acceptance Criteria(%) <br />' pg/L. pg/L % Rec %Rec % RPD %Rec %Rec %RAD Low m High <br /> tent-Amyl methyl ether(7 AME) ND 10 92 101 920 944 103 j 829 70 130 <br />' t-Butyl alcohol(TBA) -- Y ND— —50 102 102 0 – –92 Y 109 — 173 70 130 <br /> Dusopropyl ether(DIPS) 'ND 10 106 989 1 6 70 872 111 238 70 130 <br />' Ethyl tert-butyl ether(ETBE) ND 10 91 4 937 Y 244 833 98 3 16 5 70 130 <br /> Methyl-t-butyl ether(MTBE) ND 10 964 959 0 483 829 101 198 70 130 <br /> - _ 3 <br />' %SS1 ND 100 92 5 955 3 13 977 933 463 70 130 <br /> All target compounds in the Method Blank ofthrs 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)I(Amount Spiked) RPD=104'(MS–MSD)1(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)it that specific sample matrix interferes with spike recovery <br /> •I N/A=not enough sample to perform matrix spike and matrix spike duplicate N R=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 /> Laboratory exfractian solvents such as methylene chloride and acetone ma occasionally ap ear an the method blank at low levels <br />