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Sequoia <br />Analytical <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921 -0 100 <br />www.sequoialabs.com <br />Kleinfelder - Stockton Project: Granite Bumpile <br />2825 East Myrtle Street Project Number: 20-1108-33 [reported: <br />Stockton CA, 95205 Project Manager: Doug Heard 08/15/01 17:24 <br />Semivolatile Organic Compounds by EPA Method 8270C - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Reporting Spike Source %REC RPD <br />Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 1H02022 - EPA 3550B Sonication <br />Blank (lH02022-BLKI) Prepared: 08/02/01 Analyzed: 08/04/01 <br />Surrogate: 2,4,6-Tribromophenol 3.04 mg/kg 5.00 60.8 19-122 <br />Surrogate: p-Terphenyl-d14 3.61 113.33 108 18-137 <br />LCS (1H02022 -BSI) <br />Prepared: 08/02/01 Analyzed: 08/03/01 <br />Acenaphthene <br />2.68 <br />0.10 <br />mg/kg 3.33 <br />80.5 <br />31-137 <br />4-Chloro-3-methylphenol <br />4.05 <br />0.10 <br />5.00 <br />81.0 <br />26-103 <br />2 -Chlorophenol <br />3.68 <br />0.10 <br />5.00 <br />73.6 <br />25-102 <br />1,4 -Dichlorobenzene <br />2.46 <br />0.20 <br />3.33 <br />73.9 <br />28-104 <br />2,4-Dinitrotoluene <br />2.48 <br />0.20 <br />3.33 <br />74.5 <br />28-89 <br />4-Nitrophenol <br />2.90 <br />0.50 <br />5.00 <br />58.0 <br />11-114 <br />N-Nitrosodi-n-propylamine <br />2.82 <br />0.10 <br />3.33 <br />84.7 <br />41-126 <br />Pentachlorophenol <br />3.82 <br />0.50 <br />5.00 <br />76.4 <br />17-109 <br />Phenol <br />3.59 <br />0.10 <br />5.00 <br />71.8 <br />26-90 <br />Pyrene <br />3.16 <br />0.20 <br />3.33 <br />94.9 <br />35-142 <br />1,2,4-Trichlorobenzene <br />2.71 <br />0.20 <br />3.33 <br />81.4 <br />38-107 <br />Surrogate: 2-Fluorophenol - - - ----- <br />3.57 <br />5.00 <br />71.4 <br />25-121 <br />Surrogate: Phenol -d6 <br />3.50 <br />5.00 <br />70.0 <br />24-113 <br />Surrogate: Nitrobenzene -d5 <br />2.35 <br />3.33 <br />70.6 <br />23-120 <br />Surrogate: 2-Fluorobiphenyl <br />2.73 <br />3.33 <br />82.0 <br />30-115 <br />Surrogate: p-Terphenyl-d14 <br />3.26 <br />3.33 <br />97.9 <br />18-137 <br />LCS Dup (1H02022-BSE11) <br />Prepared: 08/02/01 Analyzed: 08/04/01 <br />Acenaphthene <br />2.71 <br />0.10 <br />mg/kg 3.33 <br />81.4 <br />31-137 <br />1.11 <br />40 <br />4-Chloro-3-methylphenol <br />4.08 <br />0.10 <br />5.00 <br />81.6 <br />26-103 <br />0.738 <br />40 <br />2 -Chlorophenol <br />3.63 <br />0.10 <br />5.00 <br />72.6 <br />25-102 <br />1.37 <br />40 <br />1,4 -Dichlorobenzene <br />2.43 <br />0.20 <br />3.33 <br />73.0 <br />28-104 <br />1.23 <br />40 <br />2,4-Dinitrotoluene <br />2.48 <br />0.20 <br />3.33 <br />74.5 <br />28-89 <br />0.00 <br />40 <br />4-Nitrophenol <br />2.82 <br />0.50 <br />5.00 <br />56.4 <br />11-114 <br />2.80 <br />40 <br />N-Nitrosodi-n-propylamine <br />2.84 <br />0.10 <br />3.33 <br />85.3 <br />41-126 <br />0.707 <br />40 <br />Pentachlorophenol <br />3.80 <br />0.50 <br />5.00 <br />76.0 <br />17-109 <br />0.525 <br />40 <br />Phenol <br />3.52 <br />0.10 <br />5.00 <br />70.4 <br />26-90 <br />1.97 <br />40 <br />Pyrene <br />3.72 <br />0.20 <br />3.33 <br />112 <br />35-142 <br />16.3 <br />40 <br />1,2,4-Trichlorobenzene <br />2.75 <br />0.20 <br />3.33 <br />82.6 <br />38-107 <br />1.47 <br />40 <br />Surrogate: 2-Fluorophenol <br />3.63 <br />5.00 <br />72.6 <br />25-121 <br />Surrogate: Phenol -d6 <br />3.56 <br />5.00 <br />71.2 <br />24-113 <br />Surrogate: Nitrobenzene -d5 <br />2.41 <br />3.33 <br />72.4 <br />23-120 <br />Sequoia Analytical - Sacramento <br />The results in this report apply to the samples analyzed in accordance with the chain of <br />custody document. This <br />analytical report must be reproduced in its entirety. <br />Page 17 of 20 <br />