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819 Striker Avenue Suite 13 <br /> y� 1 Sacramento C2 95834 <br /> 9600 <br /> Lr. (916)921-9600 <br /> FAX(916) 921-4100 <br /> Analytical <br /> www sequoialabs com <br /> Delta Environmental Consultants(Cameron Park) Project ARCO 2168, Stockton,CA <br /> 3330 Cameron Park Dr Project Number N/A Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 03/02/01 15 32 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPO <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 102023 -EPA 5030B(PIT) <br /> Blank(1020253-BLKI) Prepared&Analyzed 02/22/01 <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-Trruorotoluene 115 100 115 60-140 <br /> LCS(1020253-SSI) _ _ Prepared&Analyzed 02/22/01 <br /> Benzene 9 19 0 500 ug/l 100 91 9 70-130 <br /> Toluene 996 0 500 100 996 70-130 <br /> Ethylbenzene 104 0 500 100 104 70-130 <br /> leases(total) 271 0 500 300 903 70-130IlW __��- <br /> gate a a a-Tnfluorotoluene 00363 100 0 363 60-140 14-01 <br /> Matrix Spike(1020253-MS1) Y _ Source S102249-15 Prepared&Analyzed 02/22/01 <br /> Benzene 841 0 500 ug/l 100 ND 841 60-140 <br /> Toluene 907 0 500 100 ND 907 60-140 <br /> Ethylbenzene 960 0 500 100 ND 960 60-140 <br /> Xylenes(total) 256 0 500 300 ND 853 60-140 <br /> Surrogate a a a-Trtfluorotoluene 00728 100 0 728 60-140 R-01 <br /> Matrix Spike Dup(1020253-MSDI) _ Source 5102249-15 Prepared&Analyzed 02/22/01 <br /> Benzene 936 0 500 ug/l 100 ND 93 6 60-140 107 25 <br /> Toluene 9 80 0 500 100 ND 980 60-140 774 25 <br /> Ethylbenzene 107 0 500 100 ND 107 60-140 108 25 <br /> Xylenes(total) 28 6 0 500 300 ND 953 60-140 _ 11 1 25 ___ <br /> Surrogate aaa-Trtfluorotoluene 00473 Y 160 0 473 60-140 A-01 <br /> �uoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Thts analytical report must be reproducer)in its entirety <br /> Page 12 of 16 <br />