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4D Sequoia 819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> (916) 921-9600 <br /> Analytical FAX(916)921-0 100 <br /> . www sequoialabs com <br /> Delta Environmental Consultants(Caineron Park) Project Arco 6100,Tracy,CA <br /> 3330 Cameron Park Dr Project Number N/A <br /> Cameron Park CA,95682 Reported <br /> Project Manager ,Tay Johnson 02/27/01 17 07 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1020117-EPA 5030B(PIT <br /> Blank(1020117-BLKI) Prepared&AnaIyzed 02/12/01 <br /> Purgeable Hydrocarbons ND 500 ug/l -- <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Surrogate a a a-Trtfluorotoluene 101 1919 <br /> 101 bD-140 <br /> LCS(10201I7-SSI) _ Prepared&Anal <br /> Benzene P Analyzed 02/12/0] <br /> Toluene <br /> 944 0 500 ug/1 10 0 944 70-130 <br /> 9 64 0 500 100 <br /> Ethylbenzene 964 70-130 <br /> 974 0 500 10 0 974 70-130 <br /> les(total) _ 299 0 500 — 30 0 <br /> 997 70-130 <br /> rogaa-Trtfluorotoluene 102 <br /> te a a 10 0 —`� <br /> IO2 60-]40 <br /> Matrix Spike(10201177MSI) _�l_ Source S102102-03 Prepared&Analyzed 02/12/01 <br /> Benzene �9 41 0 500 ug/1 100 ND 941 60-140 <br /> Toluene 962 0 500 100 ND 962 60-140 <br /> Ethylbenzene 979 0 500 100 ND 979 60-140 <br /> Xylenes(total) 301 0 500 300 ND 100 60-140 <br /> Surrogate a a a-Tnfluorotoluene 116 100 <br /> 116 60-I40 <br /> Matrix Spike Dup(1020117-MSDi} Source SI02iD2-03 Prepared&Analyzed 02/12/01 <br /> Benzene <br /> Toluene 936 0 500 ugll 100 ND 93 6 60-140 0 533 25 <br /> 960 0 500 100 ND 96 0 60-140 0208 25 <br /> Ethylbenzene 972 0 500 100 ND 97 2 60-140 0 718 25 <br /> Xylenes(total}— 29 9 0 500 300 ND 997 60-140 0 667 25 <br /> Surrogate a a a-Trfluorotoluene 128 100 — —-� — <br /> 128 60-140 <br /> is Analytical - Sacramento The results in this report a 1 Y to the sam tv a <br /> P pp) MMP'es analyse to rccordcnce w„h i,te chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 6 of 9 <br />