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404 N Wiget Lane , <br /> Sequoia Walnut Geek CA 94598 <br /> (925)988-9600 <br /> FAX <br /> IQF Analytical www equ 988 X73 <br /> �v sequoialabs com <br /> Secor-Rancho Cordova Project Arco , <br /> 3017 Kilgore Rd Ste #100 Project Number Arco# 595 Stockton Reported <br /> Rancho Cordova CA ,95670 Project Manager Rusty Benkosky 29-Aug-01 11 31 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control ' <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %RLC RPD ' <br /> Analyte Result Limit Units Level Result %RCC Lnutti RPD Litnit Notes <br /> Batch IG20008- EPA 50308 McOH <br /> Blank(I G20008-BLK I) Prepared 20-Jul-OI Anal /c-d 23-Jul-01 , <br /> Purgeable Hydrocarbons(C6 C12) ND 1 0 mg/k,, <br /> Benzene ND 00050 <br /> Toluene ND 00050 , <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> Methyl tent-butyl ether(M FBE) ND 0 050 ' <br /> Surrogate a a a-Trti luorotoluene 0 660 0 600 110 40 140 <br /> LCS(1G20008-BSI) Prepared 20-Jul-01 Analyzed 25-Jul-01 ' <br /> Benzene 0 802 00050 mgll.g 0 800 100 50 150 <br /> Toluene 0 840 00050 0 800 105 50 150 <br /> Ethylbenzene 0 870 00050 0 800 109 50-150 . <br /> Xylenes(total) 2 63 00050 240 [to 50 150 <br /> Surrogate a a a-Trifluorotoluene - 0 796 0 600 133 40 140 <br /> Matrix Spike(1G20008-MS1) Source W107294-05 Prepared 20-Jul-01 Analyzed 26-Jul-01 <br /> Benzene 0 758 00050 mg/kg 0 800 ND_ 94 8 50-150 <br /> Toluene 0 798 00050 0 800 ND 99 8 50-150 <br /> Ethylbenzene 0 832 00050 - _ - 0 800 Tf ND --- 104----50-150 <br /> Xylenes(total) 248 00050 240 ND 103 50-150 <br /> Surrogate aaa-Tris luorololuene 0 622 0 600 104 40-140 <br /> Matrix Spike Du (IG20008-MSD1) Source:W107294-05 Prepared 20-Jul-01 Analyzed 26-Jul-01 ' <br /> Benzene O;756 -CO050 mg/kg 0 800 ND 94 5 50-150 0 264 20 <br /> Toluene 0 798 00050 0 800 ND 998 50-150 000 20 <br /> Ethylbenzene 0 832 00050 0 800 ND 104 50-150 000 20 , <br /> Xylenes(total) 251 00050 240 ND 105 50-150 120 20 <br /> Surrogate a a a-Tri luorotoluene 0 618 0 600 103 40-140 <br /> Sequoia Analytical - Walnut Creek The results in this report apply to the samples analyzed to accordance wi h the char <br /> custody document Ats analytical report must he reproduced to its enit <br /> Page 11 of 16 <br />