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819 Striker Avepue,Surto 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www sequotalabs com <br /> SECOR International-Rancho Cordova Project ARCO 595,Stockton,CA <br /> 3017 Kilgore Road,Suite 100 Project Number ARCO 595,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Project Maw- Rusty Benkosky 02/04/02 14 46 <br /> 4 - <br /> Anions by EPA Method 300 0-Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC APD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2020008-General Preparation <br /> Blank(202000$-BLKl) Prepared&Analyzed 02/01/02 _ <br /> Nitrate as NO3 ND 0 023 mgll <br /> Nitrate/Nrtnte-Nitrogen ND 0 023 " <br /> Nitrite as N ND 0 030 " <br /> LCS(2020008-BS1) _ Prepared&Analyzed 02/01/02 <br /> Nitrate as NO3 531 0 023 mg/l 500 106 80-120 <br /> Nitrate/Nitnte-Nitrogen 286 0 023 265 108 80-120 <br /> Nitrite as N 1 66 0 030 " 152 109 80-120 <br /> Matrix Spike(2020008-MS1) Source S202011-01 Prepared&Analyzed 02/01/02 <br /> Nitrate as NO3 440 0 023 mg/1 Soo 42 400 -75-125 QM-07 <br /> Nitrate/Nitrite-Nitrogen 120 0 023 265 96 906 75-125 <br /> Nitrite as N 203 0 030 1 52 ND 134 75-125 QM-07 <br /> 02/01/02 <br /> 1 Nitrate as NO3 44 2 0 023 m 5 00 42 44 - <br /> Matrix Spike up - SourcePrepared Analyzed <br /> ' 0 75-125 0 454 20 QM-0 <br /> Nitrate/Nitrite-Nitrogen 121 0 023 265 96 943 75-125 0 830 20 <br /> Nitrite as N 209 0 030 152 ND 138 75-125 291 20 QM-07 <br /> Sequoia Analytical-Sacramento The results to this report apply to the samples analyzed in accordance with the chain <br /> l of custody document This analytical report must be reproduced to its entirety <br /> Page Page 7 of 8 <br />