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819 Striker Avenue,Suite 8 <br /> D <br /> Sauam 916,CA -96WSequoia 5834 <br /> (916)921-9600 <br /> FAX(916)921-0100 <br /> qwr Analytical w .sequolalabs.com <br /> =EastMyrtle <br /> Project: Helena Chemical <br /> ProjectNumber: 23-4850-60Reposed: <br /> Project Manager: Joe Zilles 04/22/02 13:14 <br /> Conventional Chemistry Parameters by APHA/EPA Methods - Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2040323-General Preparation <br /> IBlank(2040323-BLKI) Prepared:04/12/02 Analyzed:04/15/02 <br /> Total Kjeldahl Nitrogen ND 20 mg/kg <br /> LCS(2040323-BSI) Prepared:04/12/02 Analyzed:04/15/02 <br /> Total Kjeldahl Nitrogen 127 20 mg/kg 120 106 80-120 <br /> Matrix Spike(2040323-MSI) Source:P204138-06 Prepared:04/12/02 Analyzed:04/15/02 <br /> Total Kjeldahl Nitrogen 694 200 mg/kg 120 480 178 75-125 QM-0X <br /> Matrix Spike Dup(2040323-MSD1) Source:P204138-06 Prepared:04/12/02 Analyzed:04/15/02 <br /> Total Kjeldahl Nitrogen 535 200 mg/kg 120 480 46 75-125 26 35 QM-4X <br /> Batch 2040362-General Preparation <br /> Blank(2040362-BLKI) Prepared:04/15/02 Analyzed:04/16/02 <br /> Total Kjeldahl Nitrogen ND 20 mg/kg <br /> LCS(2040362-BS1) Prepared:04/15/02 Analyzed:04/16/02 <br /> Total Kjeldahl Nitrogen 104 20 mg/kg 120 87 80420 <br /> Matrix Spike(2040362-MS1) Source:S204095-46 Prepared:04/15/02 Analyzed:04/16/02 <br /> Total Kjeldahl Nitrogen 507 200 mg/kg 120 710 NR 75-125 QM-4X <br /> Matrix Spike Dup(2040362-MSDI) Source:S20409546 Prepared:04/15/02 Analyzed:04/16/02 <br /> Total Kjeldahl Nitrogen 698 200 mg/kg 120 710 NR 75-125 32 35 QM-4X <br /> Batch 2040363-General Preparation <br /> Blank(2040363-BLKI) Prepared:04/15/02 Analyzed:04/16/02 <br /> Total Kjeldahl Nitrogen ND 20 mg/kg <br /> 1 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 22 of 24 <br />