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- 885l Dave <br /> Sequoia Morgan(40CA 8)77 9503, <br /> 6 9600 <br /> Analytical FAX(408)7826308 <br /> www sequoialabs com <br /> i <br /> I <br /> I <br /> Secor-Rancho Cordova(ARCO) Project ARCO#4932,Stockton,CA MOJ0547 <br /> 3017 Kilgore Rd Suite 100 Project Number GOC813-0001 Reported <br /> Rancho Cordova CA,95670 Project Manager Clinton Harms 10/20/05 12 56 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spice Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lunt Notes <br /> I <br /> Batch 5315006- EPA 5030B PIT/EPA 8260B <br /> Matrix Spike(5J15006-MS1) Source MOJ0547-06RE1 Prepared 10/15/05 Analyzed 10/16/05 <br /> tert-Amyl methyl ether 1550 50 ug/l 1500 ND 103 80 115 <br /> Benzene 477 50 516 ND 92 65-115 <br /> tert-Butyl alcohol 15700 2000 14300 ND 110 75-120 <br /> Di-isopropyl ether 1530 50 1510 ND 101 75-125 <br /> 1 2-Dibromoethane(EDB) 1650 50 1490 ND 111 85-120 <br /> 1,2-Dtehloroethane 1580 50 1470 ND 107 85-130 <br /> Ethanol 13800 10000 14200 ND 97 70-135 <br /> Ethyl ten-butyl ether 1470 50 1500 ND 98 75-130 <br /> Ethylbenzene 718 50 754 ND 95 75-135 <br /> Methyl tert-butyl ether 2110 50 702 1600 73 65-125 <br /> Toluene 3680 50 3720 23 98 85-120 <br /> ;Xyl,Xylenes(total) 3870 50 4120 49 93 85-125 <br /> Ga- Gasoline Range Organics(C4-C12) 46200 5000 44000 1900 101 60-140 <br /> Surrogate 12-Dichloroethane-d4 512 500 102 60-135 <br /> Matrix Spike Dup(5,115006-MSD1) Source MOJ0547-06RE1 Prepared 10/15/05 Analyzed 10/16/05 <br /> tert-Amyl methyl ether 1600 50 ug/I 1500 ND 107 80-115 3 15 <br /> Benzene 525 So 516 ND 102 65-115 10 20 <br /> tert-Butyl alcohol 16000 2000 14300 ND 112 75-120 2 25 <br /> Di-isopropyl ether 1570 50 1510 ND 104 75-125 3 15 <br /> 1,2-Dibromoethane(EDB) 1760 50 1490 ND 118 85-120 6 15 <br /> 1,2-Dichloroethane 1580 50 1470 ND 107 85-130 0 20 <br /> Ethanol 17700 10000 14200 ND 125 70-135 25 35 <br /> Ethyl tent-butyl ether 1610 50 1500 ND 107 75-130 9 25 <br /> Ethylbenzene 825 50 754 ND 109 75-135 14 15 <br /> Methyl tent-butyl ether 2140 50 702 1600 77 65-125 1 20 <br /> Toluene 3810 50 3720 23 102 85-120 3 20 <br /> Xylenes(total) 4130 50 4120 49 99 85-125 6 20 <br /> Gasoline Range Organics(C4-C12) 49400 5000 44000 1900 108 60-140 7 25 <br /> Surrogate 12-Dichloraethaned4 493 Soo 99 60-135 <br /> I <br /> i <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise slatee4 results are reported on a wet weight basu <br /> This analytical report must be reproduced in its entirety <br /> Page 19 of 24 <br />