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i n <br />' <br /> 4D (9819 Striker Avenue,Suite <br /> Sequoia Sacramento,CA 95834 <br /> 4 <br /> 16)921-9600 <br /> Analytical FAX(916)921-0 100 <br /> www.scquotalabs.com <br /> i <br /> Kleinfelder-Stockton Project: 4628 E.Woodward Ave 5605427 <br /> 2825 East Myrtle Street Project Number: 71324.G01 Reported: <br /> Stockton CA,95205 Project Manager: Steve Wiesner 06/07/06 15:52 <br /> EDB AND DBCP IN WATER BY GC/ECD (EPA 504.1) -Quality Control <br /> Del Mar Analytical- Colton <br /> Reporting Spike Source %REC RPD <br /> JAnalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Bateb C6E2515-EPA 504.1 1 EPA 504.1 <br /> Blank(C6E2515-BLKI) Prepared&Analyzed:05/25/06 <br /> 1,2-Dibromo-3-chloropropane ND 0.0050 ugll <br /> Surrogate, 4-Bromofluorobenzene 4.54 5.00 91 65-170 <br /> Laboratory Control Sample(C6E2515-BS1) Prepared&Analyzed:05/25/06 <br /> } 1,2-Dibromo-3-chloropropane 0.260 0.0050 ug/1 0.250 104 70-130 <br /> Surrogate:4 Bromofluorobenzene 5.26 5.00 105 65-174 <br /> Laboratory Control Sample(C6E2515-BS2) Prepared:05/25/06 Analyzed:05/26/06 <br /> 1,2-Dibromo-3-chloropropane 0.274 0.0050 ug/l 0.250 110 70-130 <br /> Surrogate:4-Bromofluorobenzene 5.39 5.00 108 65-170 <br /> Laboratory Control Sample Dup(C6E2515-BSD1) Prepared:05/25/06 Analyzed:05/26/06 <br /> 1,2-Dibromo-3-chloropropane 0.0921 0.0050 ug/1 0.100 92 70-130 12 30 <br /> Surrogate:4-Bromofluorobenzene 4.94 " 5.00 99 65-170 <br /> Matrix Spike(C6E2515-MS1) Source:5605427-02 Prepared:05/25/06 Analyzed:05/26/06 <br /> 1,2-Dibromo-3-chloropropane 0.246 0.0050 ug/l 0.250 ND 98 60-140 <br /> '- Surrogate:4-Bromofluorobenzene 5.19 5,01 104 65-170 <br /> F+ <br /> 4 <br /> E <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br />{ custody document. Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 5 of 7 <br />