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8 5 <br /> ^Y'- 8Hi Jarvis Drive <br />- �� Sequoia Morgan Hill <br /> CA 95037037 <br /> 4D (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> www sequoialabs corn <br /> URS Corporation [Arco I I Project ARCO#5469, Stockton,CA MOL0448 <br /> 2870 Gateway Oaks Dr, Ste 300 Project Number GOBZP-0002 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 12/22/05 11 44 <br /> Total Metals by EPA 200 Series Methods - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 5L19005- EPA 3005A/EPA 200 7 <br /> Blank(5L19005-BLK1) Prepared&Analyzed 12/19/05 <br /> Iron ND 100 ug/I <br /> Laboratory Control Sample(5L19005-BSI) Prepared 12/19/05 Analyzed 12/20/05 <br /> Iron 990 100 ug/I 1000 99 85-115 <br /> Matrix Spike(5L19005-MSI) Source MOL0599-27 Prepared 12/19/05 Analyzed 12/20/05 <br /> Iron 1070 100 ugA 1000 110 96 85-115 <br /> Matrix Spike Dup(5L19005-MSDI) Source MOL0599-27 Prepared 12/19/05 Analyzed 12/20/05 <br /> Iron 1040 100 ug/I 1000 110 93 85-115 3 20 <br /> Batch 5L20019- EPA 3005A 1 EPA 200 7 <br /> Blank(5L20019-BLK1) Prepared&Analyzed 12/20/05 <br /> ND 100 ugA <br /> oratory Control Sample(5L20019-BSI) Prepared&Analyzed 12/20/05 <br /> Iron 947 100 ug/1 1000 95 85-115 <br /> Matrix Spike(5L20019-MSI) Source MOL0448-08 Prepared&Analyzed 12/20/05 <br /> Iron 22400 100 ug/I 1000 21000 140 85-115 BB,LM <br /> Matrix Spike Dup(5L20019-MSDI) Source MOL0448-08 Prepared&Analyzed 12/20/05 <br /> Iron 22400 100 ug/I 1000 21000 140 85-115 0 20 BB LM <br /> �uoia Analytical- Morgan Hill The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document Unless otherwise stated,results are reported on a wet weight bases <br /> This analytical report must be reproduced in its entirety <br /> Page 11 of 18 <br />