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. • 819 Striker Avenue,Suite 8 <br /> rV ' Sacramento.CA 95834 <br /> Sequoia (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www.sequolalabs.com <br /> Kleinfelder-Stockton Project: Fitzpatrick Homes <br /> 2825 East Myrtle Street Project Number: 20-4341-11 Reported: <br /> Stockton CA,95205 Project Manager: Doug Heard 07/11/01 17:04 <br /> Total Metals by EPA 6000/7000 Series Methods - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> lyre Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Watch 1070062-EPA 3050B <br /> lank(1070062-BLK1) Prepared:07/09/01 Analyzed:07/10/01 - <br /> Cadmium ND 0.25 mg/kg <br /> rromium ND 0.25 " <br /> d ND 2.5 <br /> Nickel ND 1.0 <br /> Ume 0.252 0.25 ZQ-18 <br /> CS(1070062-BSI) Prepared:07/09/01 Analyzed:07/10/01 _ <br /> Cadmium 49.3 0.25 mg/kg 50.0 98.6 80-120 <br /> hromium 50.6 0.25 50.0 101 80-120 <br /> Fad 50.1 2.5 50.0 100 80-120 <br /> Nickel 51.9 LO 50.0 104 80-120 <br /> me 49.2 0.25 50.0 98.4 80-120 <br /> f14atria Spike(1070062-MSI) Source:S107034-01 Prepared:07/09/01 Analyzed:07/10/01 <br /> Cadmium 47.7 lA mg/kg 50.0 ND 95.4 80-120 <br /> (ickel <br /> romium 52.9 1.0 50.0 4.8 96.2 80-120 <br /> ad 49.7 IO 50.0 ND 99.4 80-120 <br /> 53.6 4.0 50.0 4.7 97.8 80-120 <br /> Zinc 64.4 1.0 50.0 17 94.8 80-120 <br /> Latrix Spike r"(107006 MSDI) c •c107034-01 Prepared:07/09/01 Analyzed:07/10/01 <br /> Cadmium 47.7 1.0 mg/kg 50.0 ND 95.4 80-120 0.00 20 <br /> (ickel <br /> romium 52.9 1.0 50.0 4.8 96.2 80-120 0.00 20 <br /> ad 48.9 10 50.0 ND 97.8 80-120 1.62 20 <br /> 54.3 4.0 50.0 4.7 99.2 80-120 1.30 20 <br /> Zinc 64.6 1.0 50.0 17 95.2 80-120 0.310 20 <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 7 of 10 <br /> rte, <br />