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• 819 Striker Ave Ste 8 <br />95934 <br />Sequoia Sacmm(916mo, 92 -9600 <br />,( y (916)921-9600 <br />Wo Analytical FAX (916)921-0100 <br />Analytical <br />w FAX <br />921-0100 <br />Central Valley Waste Services Project:Wash Pad Sludge 5501572 <br />P.O. Box 241001 Project Numbern/a R`pOftedO <br />Lodi CA, 95241 Project Manager:C. Kennedy 02/11/05 10:51 <br />Total Metals by EPA 6000/7000 Series Methods - Quality Control <br />Sequoia Analytical - Sacramento <br />Reporting Spike Source %REC RPD <br />Acolyte Result Limit Units Level Resta[ "AREC Livtits RPD Limit Notin <br />Batch 5010400 - EPA 3050B I EPA 6010B <br />Laboratory Control Sample (5010400 -BSI) <br />Prepared: 01/28/05 Analyzed: 02/01105 <br />Silver <br />138 <br />8.0 <br />mg/kg 100 138 80-120 <br />0001 <br />Arsenic <br />107 <br />20 <br />100 107 80-120 <br />Copper <br />87.8 <br />1.0 <br />100 88 80.120 <br />Cadmium <br />91.4 <br />1.0 <br />100 91 80-120 <br />Chromium <br />90.1 <br />1.0 <br />100 90 80-120 <br />Thallium <br />111 <br />20 <br />100 111 80-120 <br />Nickel <br />105 <br />16 <br />100 105 80-120 <br />Lead <br />82.8 <br />10 <br />100 83 80-120 <br />Selenium <br />117 <br />20 <br />100 117 80-120 <br />Zinc <br />90.8 <br />1.0 <br />100 91 80-120 <br />Antimony <br />159 <br />10 <br />100 159 80-120 <br />Qcol <br />Matrix Spike (5010400 -MR) <br />Source: 5501442-01 <br />Prepared: 01/28/05 Analyzed: 02/01/05 <br />Thallic <br />61.7 <br />20 <br />mg/kg 100 ND 62 80-120 <br />QM02 <br />Zinc <br />3880 <br />1.0 <br />100 4000 NR 80-120 <br />QM02 <br />Selenium <br />131 <br />20 <br />100 55 76 80-120 <br />QM02 <br />Antimony <br />82.5 <br />10 <br />100 9.7 73 80-120 <br />QCO2 <br />Silver <br />110 <br />8.0 <br />100 5.9 104 80-120 <br />Arsenic <br />85.1 <br />20 <br />100 15 70 80-120 <br />QM02 <br />Cadmium <br />75.0 <br />1.0 <br />100 ND 75 80-120 <br />QM02 <br />Chromium <br />98.6 <br />1.0 <br />100 31 68 80-120 <br />QM02 <br />Copper <br />264 <br />1.0 <br />100 220 44 80-120 <br />QM02 <br />Nickel <br />124 <br />16 <br />100 48 76 80-120 <br />QM02 <br />Lead <br />103 <br />10 <br />100 22 81 80.120 <br />Matrix Spike Dup (5010400-MSD1) <br />Source: SM1442-01 <br />Prepared: 0128105 Analyzed: 02/01/05 <br />Copper <br />216 <br />1.0 <br />mg/kg 100 220 NR 80-120 <br />20 <br />20 <br />QM02 <br />Chromium <br />86.6 <br />1.0 <br />100 31 56 80-120 <br />13 <br />20 <br />QM02 <br />Cadmium <br />66.6 <br />1.0 <br />100 ND 67 80-120 <br />12 <br />20 <br />QM02 <br />74.4 <br />20 <br />100 15 59 80-120 <br />13 <br />20 <br />QM02 <br />Arsenic <br />Silver <br />100 <br />8.0 <br />100 5.9 94 80-120 <br />10 <br />20 <br />3050 <br />1.0 <br />100 4000 NR 80-120 <br />24 <br />20 <br />QC20, QM02 <br />Zinc <br />56.6 <br />20 <br />100 ND 57 80-120 <br />9 <br />20 <br />QM02 <br />Thallium <br />119 <br />20 <br />100 55 64 80-120 <br />10 <br />20 <br />QM02 <br />Selenium <br />65.3 <br />10 <br />100 9.7 56 80-120 <br />23 <br />20 <br />QCO2, QC20 <br />Antimony <br />113 <br />16 <br />100 48 65 80-120 <br />9 <br />20 <br />QM02 <br />Nickel <br />86.6 <br />10 <br />100 22 65 80.120 <br />17 <br />20 <br />QM02 <br />Lead <br />Sequoia Analytical - Sacramento <br />The results in this report apply to the samples analyzed in accordance with the than of <br />custody document. Unless otherwise stated, results are reported <br />on a wet <br />weight basis. <br />This analytical report must be reproduced in Its entirely. <br />Page 6 of 9 <br />