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'"We `►' 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 Inc.McCampbell Analytical, ITelephone:925-798-1620 Fax:925-798-1622 Website:www.mccampbell.com E-mail:main@mccampbell.com QC SUMMARY REPORT FOR SW8260B W.O.Sample Matrix: Water QC Matrix: Water WorkOrder:0605317 EPA Method:SW8260B Extraction:SW5030B BatchlD:21725 Spiked Sample ID 0605317-004B Analyte Sample Spiked MS MSD MS-MSD LCS LCSD LCS-LCSD Acceptance Criteria(%) pg/L Ng/L %Rec. %Rec. %RPD %Rec. %Rec. %RPD MS/MSD LCS/LCSD tert-Amyl methyl ether(TAME ND 10 102 97.6 4.08 94.8 96.8 2.05 70- 130 70- 130 t-Butyl alcohol(TBA) ND 50 113 106 6.29 113 113 0 70- 130 70- 130 1,2-Dibromoethane(EDB) ND 10 119 117 1.70 118 118 0 70-130 70- 130 1,2-Dichloroethane(1,2-DCA) ND 10 105 102 3.26 101 101 0 70- 130 70- 130 Diisopropyl ether(DIPS) ND 10 115 111 3.21 112 112 0 70- 130 70- 130 Ethyl tert-butyl ether(ETBE) ND 10 101 96.7 4.04 96.2 96.8 0.588 70- 130 70- 130 Methyl-t-butyl ether(MTBE) ND 10 110 106 3.88 103 105 1.33 70- 130 70- 130 %SSI: 97 10 105 105 0 106 107 0.622 70- 130 70- 130 All target compounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions: NONE BATCH 21725 SUMMARY Sample ID Date Sampled Date Extracted Date Analyzed Sample ID Date Sampled Date Extracted Date Analyzed 0605317-OOIB 5/15/06 11:20 AM 5/17/06 5/17/06 3:47 AM 0605317-002B 5/15/06 10:55 AM 5/17/06 5/17/06 3:20 PM 0605317-003B 5/15/06 9:32 AM 5/16/06 5/16/06 11:27 PM 0605317-004B 5/15/06 8:30 AM 5/17/06 5/17/06 12:11 AM 0605317-005B 5/15/06 10:10 AM 5/17/06 5/17/06 4:53 PM 0605317-006B 5/15/06 9:00 AM 5/17/06 5/17/06 5:38 PM MS=Matrix Spike;MSD=Matrix Spike Duplicate;LCS=Laboratory Control Sample;LCSD=Laboratory Control Sample Duplicate;RPD=Relative Percent Deviation. %Recovery=100'(MS-Sample)/(Amount Spiked);RPD=100'(MS- MSD)/((MS+MSD)/2). MS/MSD spike recoveries and/or%RPD may fall outside of laboratory acceptance criteria due to one or more of the following reasons:a)the sample is inhomogenous AND contains significant concentrations of analyte relative to the amount spiked,or b)the spiked sample's matrix interferes with the spike recovery. N/A=not enough sample to perform matrix spike and matrix spike duplicate. 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 analyte content. Laboratory extraction solvents such as methylene chloride and acetone may occasionally appear in the method blank at low levels. DHS Certification No. 1644 OVQA/QC Officer `VAPI, %Mp/