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tSequoia <br /> • • 819 Stoker Avenue.Suite 8 <br /> Sacramemo,CA 95634 <br /> (916916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical w .seciuolalabs.com <br /> Kleinfelder-Sacramento Project: Helena Chemical <br /> 3077 Fite Circle Project Number: 234850-60 Reported: <br /> Sacramento CA,95827 Project Manage': Steve Dalton 05/13/02 13:22 <br /> Conventional Chemistry Parameters by APRA/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 2050234-General Preparation <br /> ,Batch <br /> Prepared:05/09/02 Analyzed:05/10/02 <br /> Total Kjeldahl Nitrogen ND 20 mg/kg <br /> ILCS(2050234-BSI) Prepared:05/09/02 Analyzed: 05/10/02 <br /> Total Kjeldahl Nitrogen 109 20 mg/kg 120 91 80-120 <br /> Matrix Spike(2050234-MS1) Source:S204448-21 Prepared:05/09/02 Analyzed:05/10/02 <br /> Total Kjeldahl Nitrogen 977 80 mg/kg 120 970 6 75-125 QM-4X <br /> Matrix Spike Dup(2050234-MSDI) Source:S204448-21 Prepared:05/09/02 Analyzed:05/10/02 <br /> CTotal Kjeldahl Nitrogen 890 80 mg/kg 120 970 NR 75-125 9 35 QM-4X <br /> Batch 2050236-General Preparation <br /> Blank(2050236-BLK1) Prepared:05/09/02 Analyzed: 05/10/02 <br /> Total Kjeldahl Nitrogen ND 20 mg/kg <br /> LCS(2050236-BSI) Prepared:05/09/02 Analyzed:05/10/02 <br /> Total Kjeldahl Nitrogen 107 20 mg/kg 120 89 80-120 <br /> Matrix Spike(2050236-MSI) Source:S204448-38 Prepared:05/09/02 Analyzed:05/10/02 <br /> Total Kjeldahl Nitrogen 1300 80 mg/kg 120 1000 250 75-125 QM-4X <br /> ,Matrix Spike Dup(2050236-MSDI) Source:S204448-38 Prepared:05/09/02 Analyzed:05/10/02 <br /> Total Kjeldahl Nitrogen 1450 80 mg/kg 120 1000 37575-125 11 35 QM-4X <br /> I <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 15 of 16 _ <br />