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(D Sequoia <br />1W Analytical <br />819 Striker Ave Ste 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www.sequoialabs.com <br />Kleinfelder - Stockton <br />Project: <br />Northbrook <br />5308269 <br />2825 East Myrtle Street <br />Project Number: <br />34202.E01 <br />Reported: <br />Stockton CA, 95205 <br />Project Manager: <br />Joe Zilles <br />08/20/03 17:53 <br />Total Metals by EPA 6000/7000 Series Methods <br />Sequoia Analytical - Sacramento <br />Reporting <br />Walyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br />132-24" (5308269-01) Soil Sampled: 08/13/03 08:45 Received: 08/13/03 16:50 <br />Cadmium ND 1.0 mg/kg 4 3080192 08/14/03 08/15/03 EPA 6010B <br />Chromium 20 1.0 " " "1.'. <br />1. <br />Hexavalent Chromium 4.3 2.5 10 3080254 08/18/03 08/18/03 EPA 7196A <br />Nickel 15 4.0 4 3080192 08/14/03 08/15/03 EPA 6010B <br />Lead ND 10 <br />Zinc 58 1.0 <br />133-24" (S308269-02) Soil Sampled: 08/13/03 09:10 Received: 08/13/03 16:50 <br />Cadmium <br />ND <br />1.0 mg/kg <br />4 <br />3080192 <br />08/14/03 <br />08/15/03 <br />EPA 6010B <br />Chromium <br />19 <br />1.0 " <br />" <br />" <br />11 <br />1. <br />Hexavalent Chromium <br />ND <br />1.2 <br />5 <br />3080254 <br />08/18/03 <br />08/18/03 <br />EPA 7196A <br />Nickel <br />17 <br />4.0 <br />4 <br />3080192 <br />08/14/03 <br />08/15/03 <br />EPA 6010B <br />Lead <br />ND <br />10 <br />Zinc <br />36 <br />1.0 <br />134-24" (S308269-03) Soil <br />Sampled: 08/13/03 09:20 <br />Received: 08/13/03 16:50 <br />ND <br />1.0 mg/kg <br />4 <br />3080192 <br />08/14/03 <br />08/15/03 <br />EPA 6010B <br />Cadmium <br />Chromium <br />22 <br />ND <br />1.0 " <br />1.2 <br />" <br />5 <br />3080254 <br />08/18/03 <br />08/18/03 <br />EPA 7196A <br />Hexavalent Chromium <br />20 <br />4.0 <br />4 <br />3080192 <br />08/14/03 <br />08/15/03 <br />EPA 6010B <br />Nickel <br />Lead <br />ND <br />10 <br />Zinc <br />34 <br />1.0 <br />135-24" (S308269-04) Soil <br />Sampled: 08/13/03 10:15 <br />Received: 08/13/03 16:50 <br />ND <br />1.0 mg/kg <br />4 <br />3080192 <br />08/14/03 <br />08/15/03 <br />EPA 6010B <br />Cadmium <br />Chromium <br />20 <br />ND <br />1.0 " <br />1.2 <br />" <br />5 <br />3080254 <br />08/18/03 <br />08/18/03 <br />EPA 7196A <br />Hexavalent Chromium <br />18 <br />4.0 <br />4 <br />3080192 <br />08/14/03 <br />08/15/03 <br />EPA 6010B <br />Nickel <br />Lead <br />ND <br />10 <br />Zinc <br />34 <br />1.0 <br />" <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 />Pate 6 of 29 <br />