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Y +o r <br /> Sequoia 885 Jarvis Drive <br /> Morgan Hill CA 95037 <br /> (408) 776-9600 <br /> N-0 Analytical FAX (408) 78Z-6308 <br /> 0 <br /> ATC Associates, Inc -Modesto Project Stockton fire Station #2 Sampled 12/14/99 <br /> l 1 17 Lone Palm Avenue Project dumber '15462574 0001 Received 12/17/99 <br /> Modesto CA 9535!-1502 Project,Nlanaeer Leanne Homsev Reported 1/14100 <br /> Diesel Hydrocarbons (C9-C24) by DHS LUFT/Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Motes* <br /> B-itch 9120732 Date Prepared 12/22/99 Extraction Method EPA 35I0H <br /> Blank 9120732-B LKI <br /> Diesel Range Hvdrocarbons 12/23/99 SID me/1 00500 <br /> Surrogate n-Pentacosane 0 100 0 109 <br /> -500-150 109 <br /> LCS 9120732-BSI <br /> Diesel Range Hydrocarbons 12/23/99 1 00 0 816 mg/t 600-140 ---996 <br /> 81 6 <br /> Surrogate n-Penracosane - --— -- 0 100 �- -- -- -- 0 099b----'---- --- 50 0-150 99 6 - - — -- �_- <br /> LCS Dup 9120732-BSD1 <br /> Diesel Range Hydrocarbons _-- 12/23/99 1 00 0 725 mg/I 600-140 72 5 _500 11 8 <br /> Surrogate n-Pentacosane 110 100 0 111 11 --3-0-0--150 111 - <br /> tch 9120820 Date Prepared 12/27/99 Extraction Method EPA 3510B <br /> Wes,,k 9120820-BLKI <br /> I Range Hydrocarbons----- - 12/30/99 _0 135 _ mg/I 005004 4 <br /> Surrogate n-Penracosane -- 0 100 --- -00884 - ' T---- 0 0-1 5 0 88 4 — - ------ <br /> LCS 9120820-BSI <br /> Diesel Range Hydrocarbons -� 12/30/99 1 00 _0 778 _ mm 600-140 77 8 <br /> Surrogate n-Pentacosane 0 100 ---- - 0192 �- -----j00-1-50— 192 - - -- ---- <br /> LCS Dun 9120820-BSD1 <br /> Diesel Range Hydrocarbons 12/30/99 1 00 ----0684 mg/I 600-140 684 500 129 <br /> Surrogate n-Pentacosane 0 100 00988 50 0-1 50 988 <br /> Sequoia Analytical -Morgan Hill *Refer to end of i eport for tett of notes and definitions <br /> Page 8 of 9 <br />