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+ 1 C) <br /> 819 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Anal Tical FAX(916)4230100 <br /> u www.sequoialabs.com <br /> Kleinfelder-Stockton Project:DSS-Tracy S512627 <br /> 2825 East Myrtle Street Project Number:2913 IXO I Reported: <br /> Stockton CA,95205 Project Manager:Francis Bean 01/17/06 15:10 <br /> Conventional Chemistry Parameters by APHAIEPA Methods - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 6010197-General Preparation/EPA 150.1 <br /> Duplicate(6010197-DUP1) Source: S512629-01 Prepared&Analyzed: 12/29/05 <br /> pH 9.81 1.00 pH Units 9.81 0 10 <br /> Batch 6010005-General Preparation/EPA 160.1 <br /> Blank(6010005-BLKI) Prepared&Analyzed:01/03/06 <br /> Total Dissolved Solids ND 23 mg/l <br /> Laboratory Control Sample(6016005-BSI) Prepared&Analyzed:0I/03/06 <br /> Total Dissolved Solids 481 5.0 mg/l 500 96 80-120 <br /> Matrix Spike(6010005-MS1) Source:S512630-08 Prepared&Analyzed:01/03/06 <br /> Total Dissolved Solids 1020 5,0 mg/l 500 548 94 80-120 <br /> Matrix Spike Dup(6010005-MSDI) Source:5512630-08 Prepared&Analyzed:01/03/06 <br /> Total Dissolved Solids 1040 5.0 mg/l 500 548 98 80-120 2 20 <br /> Batch 6010114-General Preparation/SM 2320 <br /> Blank(6010114-BLKI) Prepared&Analyzed:01/09/06 <br /> Total Alkalinity ND 5.0 mg/l <br /> Bicarbonate Alkalinity ND 5.0 " <br /> Carbonate Alkalinity ND 5.0 " <br /> i Hydroxide Alkalinity ND 5.0 " <br /> Laboratory Control Sample(60I0114-BS1) Prepared&Analyzed:01/09/06 <br /> i Total Alkalinity 29.8 5.0 mgA 26.5 112 80-120 <br /> l <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 10 of 15 <br />