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i <br /> 110 2nd Avenue South 4D7 Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc FTelephone 925-798-1620 Fax 925 798-1622 <br /> Ihttp 1/www mccampbell com E-inail mamQmccatnpbell com <br /> QC SUMMARY REPORT FOR SW8260B - <br /> Matrix W WorkOrder 0307414 <br />' EPA Method SW8260B Extraction SW5030B BatchlD 7934 Spiked Sample ID 0307398-002A <br /> Sample Spiked MS" MSD" MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) <br /> pg/L Ng/L % Rec %Rec %RPD % Rec %Rec %RPD Low High <br /> Benzene ND 10 110 105 421 106 105 0 856 70 130 <br /> Methyl-t-butyl ether(MTBE) ND 10 109 103 556 102 101 0 532 70 130 — <br /> Toluene ND 10 116 112 348 116 116 0 70 I 130 <br /> %SS 1 945 100 106 I05 0 829 102 102 0 70 130 <br /> %SS2 981 100 997 976 2 10 974 977 0 288 70 130 <br /> %SS3 950 100 102 105 280 102 102 0 70 130 <br /> IAll target compounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions <br /> NONE <br /> I <br /> 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)I(Amount Spiked),RPD=100.(MS—MSD)/(MS+MSD)"2 <br /> •MS and/or MSD spike recoveries may not be near 100%or the RPDs near 0%fi 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 /> N/A=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 /> Laboratory extraction solvents such as methylene chloride and acetone may occasionally appear in the method blank at low levels <br />