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Sequoia " 8195t:rar Avenue.Suite <br /> ■-'`-/J_ � Sacramento,CA 95834 <br /> (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical w .sequolalabs.com <br /> Kleinfelder-Stockton Project: Granite Office <br /> ` 2825 East Myrtle Street Project Number: 13257 Reported: <br /> Stockton CA,95205 Project Manager: Tony Maz2ei 04/10/02 17:50 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %"REC Limits RPD Limit Notes <br /> Batch 2DO3021 -EPA 5030B McOH <br /> ` Blank(2DO3021-BLKI) Prepared&Analyzed:04/02/02 <br /> p-Isopropyltoluene ND 0.50 ugd <br /> Methylene chloride ND 0.50 " <br /> Naphthalene ND 5.0 " <br /> n-Propylbenzene ND 0.50 " <br /> Styrene ND 0.50 " <br /> 1,1,1,2-Tetrachloroethane ND 0.50 " <br /> L 1,1,2,2-Tetrachloroethane ND 0.50 " <br /> Tetrachloraethene ND 0.50 " <br /> Toluene ND 0.50 " <br /> L 1,43-Trichlorobenzene ND 0.50 " <br /> 1,2,4-Trichltnnbenzene ND 0.50 <br /> L1,1,1-Trichloroethane ND 0.50 ^, <br /> 1,1,2-Trichloroethane ND 0.50 <br /> Trichloroethene ND 0.50 <br /> Trichlorofluoromethane ND 0.50 " <br /> 1,2,3-Trichloropropane ND 0.50 <br /> 1,2,4-Trimethylbenzene ND 0.50 <br /> 1,3,5-Trimethylbenzene ND 0.50 " <br /> LVinyl chloride ND 0.50 " <br /> Total Xylenes ND 0.50 <br /> Surrogate:DibromoJluoromethane 9.61 10.0 96.1 50-150 <br /> LSurrogate:1,2-Dichloroethane-d4 9.58 10.0 95.8 50-150 <br /> Surrogate:Toluene-d8 9.96 10.0 99.6 SO-ISO <br /> Surrogate:4-Bromofluorobemene 9.93 10.0 99.3 50-ISO <br /> LCS(2D03021-BSI) Prepared&Analyzed:04/02/02 _ <br /> Benzene 10.3 0.50 ug/l 10.0 103 70-130 <br /> r Chlorobenzene 10.4 0.50 10.0 104 70-130 <br /> 1,1-Dichloroethene 10.1 0.50 10.0 101 70-130 <br /> Toluene 11.0 0.50 10.0 110 70-130 <br /> Trichloroethene 9.88 0.50 10.0 98.8 70-130 <br /> Surrogate:Dibromofluoromethane 9.74 10.0 97.4 50-150 <br /> Surrogate:1,2-Dichloroethaned4 9.48 10.0 94.8 50-150 <br /> t� Surrogate:Toluene-d8 10.1 10.0 101 50-150 <br /> Surrogate:4-Bromol7wrobenzene 10.1 10.0 102 50-150 <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 /> r <br /> Page 6 of 8 <br />