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Sequoia 8l, Jarvis <br /> Dr <br /> Ma'pn Hill,CA 9503737 <br /> • (408)700 <br /> Analytical FAX(408)782-6382-6308 <br /> www.wquoialabs.cam <br /> Stratus Environmental Inc. Project: ARCO#5469,Stockton,CA MLL0827 <br /> 3330 Can iron Park Dr.,Suite 550 Project Number: ARCO#5469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson <br /> 01/07/03 13:36 <br /> Conventional Chemistry Parameters by APHA/EPA Methods <br /> Sequoia Analytical- Morgan Hill <br /> Reporting <br /> [Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1 MLL0827-01 Water Sampled: 12/23/02 07:15 Received: 12/23/02 13:40 <br /> Total Alkalinity 790- 10 mg/I 2 2L30031 12/30/02 12/30/02 SM 2320B <br /> Chemical Oxygen Demand ND" 30 1 2L30024 12/27/02 12/30/02 EPA 410.4 <br /> Dissolved Oxygen 2.88' 1.00 21-26038 12/23/02 12/23/02 EPA 360.1 <br /> Total Dissolved Solids 950-/ 10 2L31040 12/27/02 12/27/02 EPA 160.1 <br /> MW-2 MLL0827-02 Water Sam led: 12/23/02 06.55 Received: 12/23/02 13:40 <br /> Total Alkalinity 380 r 25 mg/1 5 2L30031 12/30/02 12/30/02 SM 2320E <br /> Chemical Oxygen Demand ND, 30 1 2L30024 12/27/02 12/30/02 EPA 410.4 <br /> Dissolved Oxygen 4.69, 1.00 2L26038 12/23/02 12/23/02 EPA 360.1 <br /> Total Dissolved Solids 560/ 10 " 2L31040 12/27/02 12/27/02 EPA 160.1 <br /> MW-4 MLL0827-03 Water Sampled: 12/23/02 07:35 Received: 12/23/02 13:40 <br /> Total Alkalinity 640 25 mg/I 5 2L30031 12/30/02 12/30/02 SM 2320B <br /> Chemical Oxygen Demand ND , 30 1 2L30024 12/27/02 12/30/02 EPA 410.4 <br /> Dissolved Oxygen 1.75 1.00 21,26038 12/23/02 12/23/02 EPA 360.1 <br /> Total Dissolved Solids 950 IQ 1121,31040 12/27/02 12/27/02 EPA 160.1 <br /> MW-5 MLL0827-04 Water Sampled: 12/23/02 08:30 Received: 12/23/02 13:40 <br /> Total Alkalinity 620 25 mg/l 5 21-30032 12/30/02 12/30/02 SM 2320B <br /> Chemical Oxygen Demand 60 30 l 2L30024 12/27/02 12/30/02 EPA 410.4 <br /> Dissolved Oxygen 3.55, 1.00 2L26038 12/23/02 12/23/02 EPA 360,1 <br /> Total Dissolved Solids 1300 10 2L31040 12/27/02 12/27/02 EPA 160.1 <br /> MW-7(MLL0827-05)Water Sampled: 12/23/02 08:00 Received: 12/23/02 13:40 <br /> Total Alkalinity 500 • 25 mg/1 5 2L30032 12/30/02 12/30/02 SM 23208 <br /> Chemical Oxygen Demand ND . 30 1 2L30024 12/27/02 12/30/02 EPA 410.4 <br /> Dissolved Oxygen 3.64 , 1.00 21,26038 12/23/02 12/23/02 EPA 360.1 <br /> Total Dissolved Solids 1400. 10 21-31040 12/27/02 12/27/02 EPA 160.1 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> 0 custody document. Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its enrirety. <br /> Page 4 of 18 <br />