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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento, 92 95834 <br /> l..Ul -, � - (916)921-9600. <br /> FAX (916)921-0100 <br /> Analytical www.5equoialabs.com . <br /> Kleinfelder-Stockton Project:. DSS-Tracy <br /> 1 2825 East Myrtle Street Project[lumber: 20-2245-36.E02 Reported: <br /> Stockton CA,95205 Project Manager; Doug Heard 12/15/00 15:04 <br />` Total Metals by EPA 200 Series Methods - Quality Control <br /> Sequoia Analytical - Sacramento <br /> t <br /> i Reporting Spike Source °hREC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> t Batch 0120065-EPA 3010A <br /> Blank(0120065-BLK1) Prepared: 12/06/00 Analyzed: 12/07/00 <br /> Hardness - --- ND LOG mg/1 <br /> Calcium ND 0.200 " <br /> Capper ND 0.00500 " <br /> Iron ND 0.0100 " <br /> Magnesium ND 0.0500 " <br /> Manganese ..ND 0.00500 " <br /> Potassium ND 0.500 " <br /> Sodium ND 0.200 <br /> zinc ND 0.00500 " <br /> LCS(0120065-BSI). Prepared: 12/06/00 Analyzed: 12/07/00 <br /> Hardness 8.65 1.00 mgll 8.25 105 80-120 <br /> Copper 0.480 0.00500 0.500 96.0 80-120 <br /> Iron 0.526 0.0100 '0.506 105 80-120 <br /> Manganese 0.501 0.00500 0.500 100 80-120' <br /> ' Zinc 0.513 0.00500 0.500 .. 103 80-120 <br /> Matrix Spike(0120065-MSI) Source:S011425-01 Prepared: 12/06/00 Analyzed: 12/07/00 <br /> Hardness 154 [.00 mgll 8.25 NR 80-120 Q-03 <br /> Copper 0.460 0.00500 0.500 92.0 80-120 <br /> iron 0.504 0.0100 0.500 10i 80-120 <br /> Manganese 0.479 0.00500 0.500 95.8' 80-120 <br /> Zinc 0.492 0.00500 0.500 98.4 80-120 <br /> Matrix Spike_Dup.(0120065-MSD1) Source:5011425-01 Prepared: 12/06/00 Analyzed:.12/07/00 _ <br /> Hardness 164 1.00 mg/1 8.25 NR 80-120- 3.10 20 Q-03 <br /> Copper. 0.479 0.00500 0.500 95.8 80-120 4.05 20 <br /> Iron 0.525 0A100 0.500 105 80-120 4.08 .. 20 <br /> Manganese 0.497 0.00500 0.500 99.4 80-120 3.69 20 <br /> Zinc 0.508 0.00500 0.500 102 - '80-120 3.20 20 <br /> { Sequoia Analytical-Sacramento The results to 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 /> 1 Page 6 of 11 <br />