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1 819 Striker Avenue, Suite 8 <br />Sequoia Sacramento, CA 95834 <br />4D(916) 921-9600 <br />woAnalytical FAX (916) 921-0100 <br />EMCON/IT - Sacramento Project: Foothill Landfill, San Joaquin County Sampled: 1/24/00 <br />1433 N. Market Blvd., #1 Project Number: 791289/16037-200.000 Received: 1/25/00 <br />Sacramento, CA 95834 Project Manager: Steve Giacomini Reported: 2/9/00 <br />Total Metals by EPA 6000/7000 Series Methods/Quality Control <br />Sequoia Analytical - Sacramento <br />' <br />RPD <br />Date Spike Sample <br />QC <br />Reporting Limit <br />Recov. RPD <br />Analyte <br />Analyzed Level Result <br />Result <br />Units Recov. Limits <br />% Limit <br />% Notes* <br />Batch: 0010225 <br />Date Prepared: 1/25/00 <br />Extraction Method: General Preparation <br />Blank <br />0010225-BLKI <br />Hexavalent Chromium <br />1/25/00 <br />ND <br />mg/l 0.00500 <br />U <br />LCS <br />0010225-BS1 <br />Hexavalent Chromium <br />1/25/00 0.0500 <br />0.0468 <br />mg/I 80.0-120 <br />93.6 <br />Matrix Spike <br />0010225-MS1 S001324-01 <br />0.0552 <br />mg/1 75.0-125 <br />99.0 <br />Hexavalent Chromium <br />1/25/00 0.0500 0.00571 <br />Matrix Spike Dup <br />0010225-MSDI S001324-01 <br />Hexavalent Chromium <br />1/25/00 0.0500 0.00571 <br />0.0541 <br />mg/l 75.0-125 <br />96.8 20.0 <br />2.25 <br />Batch: 0020001 <br />Date Prepared: 2/1/00 <br />Extraction Method: EPA 7470A <br />Blank <br />0020001-BLK1 <br />Mercury <br />2/1/00 <br />ND <br />mg/1 0.000200 <br />U <br />LCS <br />0020001-BS1 <br />Mercury <br />2/1/00 0.00500 <br />0.00409 <br />mg/1 80.0-120 <br />81.8 <br />Matrix Spike <br />0020001-MS1 S001323-01 <br />' <br />Mercury <br />2/1/00 0.00500 ND <br />0.00420 <br />mg/1 75.0-125 <br />84.0 <br />Matrix Spike Dup <br />0020001-MSD1 S001323-01 <br />Mercury <br />2/1/00 0.00500 ND <br />0.00405 <br />mg/1 75.0-125 <br />81.0 20.0 <br />3.64 <br />t <br />' <br />Sequoia Analytical - Sacramento <br />*Refer to end of report for text of notes and definitions. <br />' <br />Page 10 of 16 <br />