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4DSequoia 1455 McDowell Blvd,North Ste D <br /> Petatwna,CA 94954 <br /> Analytical (707)792-1865 <br /> FAX(707)792-0342 <br /> www sequoialabs.com <br /> ffAnalytical Project General <br /> Olive Dnve,Suite D Project Number Equtva 2575 Country Club Blvd,Stockton Reported: <br /> Davis CA,95616 Project Manager Joel Kiff 11/13/0114 09 <br /> 'total Metals by EPA 200 Series Methods- Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %R-EC Limits RPD Limit Notes <br /> Batch 1100676-EPA 3020A <br /> Blank 1100676-BLKI Prepared 10/31/01 Analyzed 11/02/01 <br /> Cadmium ND 050 ugA <br /> Chromium ND 5 0 " <br /> Copper ND 5 0 " <br /> Lead ND 5 0 " <br /> Nickel ND 5 0 " <br /> LCS 1100676-BSlPrepared 10/31/01 Analyzed 11/02/01 <br /> Cadmium 1 81 050 ug/1 200 905 85-115 <br /> Chromium 9 67 5 0 100 96 7 85-115 <br /> Copper 904 5 0 100 904 85-115 <br /> Lead 41 7 50 400 104 85-115 <br /> Nickel 2I 0 5 0 200 105 85-115 <br /> Wx$ ike 1100676-MSl Source:?110463-09 Rrepared 10/31/01 Analyzed 11/02/01 <br /> Cadmium 1 69 050 ug/I 2 00 ND $45 75-125 <br /> Chromium 8 41 50 100 ND 841 75-125 <br /> Copper 8 02 5 0 100 ND 802 75-125 <br /> Lead 448 5 0 400 5 2 990 75-125 <br /> Nickel 472 20 200 23 121 75-125 <br /> Matn:Spike Du 1100676-MSDI Source:P110463-01 Pre aced 10/31/01 Analyzed 11/02/01 <br /> Cadman 1 75 050 ugn 200 ND 87 5 75-125 349 20 <br /> Chromium 7 62 5 0 Wo ND 762 75-125 986 20 <br /> Copper 893 5 0 100 ND 893 75-125 107 20 <br /> Lead 440 50 40 0 52 97 0 75-125 180 20 <br /> Nickel 480 20 200 23 125 75-125 1 68 20 <br /> Ola Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report mast be reproduced in its entirety <br /> Page 3 of 5 <br />