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`/ �' 819 Stoker Avenue.Suite 8 <br /> Sequoia Sacramento. -96M <br /> (916)92 92 1-9600 <br /> Analytical wFAX(916)921-0 100 <br /> ww.sequoialabs.com <br /> Kleinfelder-Stockton Project: Sierra View Animal Health <br /> 2825 East Myrtle Street Project Number: 20-4555-01.G01 Reported: <br /> Stockton CA,95205 Project Manager: Gary Gulseth 04/20/01 14:35 <br /> Volatile Organic Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1040235-EPA 5030B [P/T[ <br /> LCS(1040235-BS1) _ Prepared&Analyzed:04/19/01 <br /> Surrogate:4-BFB 47.6 ug/t 50.0 95.2 70-130 <br /> Matrix Spike(1040235-MSI) Source:5104233-02RE1 Prepared&Analyzed:04/19/01 <br /> Benzene 45.0 2.00 ugfl 50.0 ND 90.0 60-140 <br /> Chlorobenzene 51.1 2.00 50.0 ND 102 60-140 <br /> 1,1-Dichlormthene 54.0 2.00 50.0 ND 108 60-140 <br /> Toluene 45.3 2.00 50.0 ND 90.6 60-140 <br /> Trichloroethene 51.4 2.00 50.0 ND 103 60-140 <br /> Surrogate:Dibromofluorometham 55.4 50.0 111 70-130 <br /> Surrogate:l,2-DCA-d4 52.5 50.0 105 70-130 <br /> Su"ogate:Toluene-dB 46.3 50.0 92.6 70-130 <br /> Surrogate:4-BFB 47.4 50.0 94.8 70-130 <br /> Matrix Spike Dup(1040235-MSDI) Source:S104233-02RE1 Prepared&Analyzed:04/19/01 <br /> Benzene 44.6 2.00 ug0 50.0 ND 89.2 60-140 0.893 25 <br /> Chlorobenzene 50.6 2.00 50.0 ND 101 60.140 0.983 25 <br /> IJ-Dichloroethene 53.0 2.00 50.0 ND 106 60-140 1.87 25 <br /> Toluene 45.7 2.00 50.0 ND 91.4 60-140 0.879 25 <br /> Trichloroethene 51.6 2.00 50.0 ND 103 60-140 0.388 25 <br /> Su"ogate:Dibromofluaromethane 53.9 50.0 108 70-130 <br /> Surrogate:l,2-DCA-d4 52.6 50.0 105 70-130 <br /> Surrogate:Toluened8 46.9 50.0 93.8 70-130 <br /> Surrogate:4-BFB 48.3 50.0 96.6 70-130 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 8 of 10 <br />