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4ZSequoia 885 Jarvis Drive <br /> _ Morgan Hill CA 95037 <br /> (408) 776-9600 <br /> Analytical FAX (408) 782-6308 <br /> ATC Associates Inc - Modesto Project Stockton Fire Station 42 Sampled 12/14/99 <br /> I 1 17 Lone Palm Avenue Project Number #5462574 0001 Received 12/17/99 <br /> Modesto CA 95351-€502 Project Manager Jeanne Homse,, Reported 1/14/00 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical- Morgan Hill <br /> Date Spike Sample QC Reporting Limit Rec,ov RPD RPD <br /> lAnalvte Analvzed Level Result Result Units Recov Limits % Limit "o Notes* <br /> Matrix Spike Dun(continued? 9120742-MSDI M912656-03 <br /> Surrogate—aa a-Trjluoratoluene 12/23/99 10 0 101 ugil 700-130 101 <br /> Batch 9120790 Date Prepared 12/27/99 Extraction Method EPA 5030E PIT <br /> Blank 9120790-BLK1 <br /> Purgeable Hydrocarbons 12/27/99 NO ug/1 500 <br /> Benzene NO <br /> 0500 <br /> Toluene " NO 0 500 <br /> Ethvlbenzene NO <br /> 0 500 <br /> Xylenes(total) NO 0 500 <br /> Methvl tent-butyl ether _ NO " 250 <br /> Surrogate a a a-Trifluvrotoluene 10 0 — -- 937 LL 700-130 987 ----W <br /> 9120790-BSI -- <br /> eable Hydrocarbons 12/27!99 250 214 ug 70 0-130 SS 6 <br /> ur100 <br /> Jrogate a a a-Tnfluorotoluene 10 0 11 5 " 700-130 115 <br /> _Matrix Spike 9120790-MSI iM912683-06 <br /> Purgeable Hydrocarbons 12/27/99 250 ND_ __ 242 ug/I 600-140 968 <br /> Surrogate a a a-Trjluorotoluene 100 11 "0 0-130 115 <br /> Matrix Spike Dup 9120790-MSD1 M912683-06 <br /> Purgeable Hydrocarbons 12/27/99 250 ND 226 ug/l 600-140 904 25 0 684 <br /> Surrogate a a a Trrfluorotoluene 100 W !15 700-130 115 <br /> Batch 9120791 Date Prepared 12/27/99 Extraction ivfethod EPA 5030E [P/Tl <br /> Blank 9120791-BLKI <br /> Purgeable Hvdrocarbons 12/27/99 NO ue 50 0 <br /> Benzene NO 0 500 <br /> Toluene NO 0 500 <br /> Ethylbenzene NO 0 500 <br /> Xvlenes(total) NO 0 500 <br /> 4lethvi tert-butvl ether ND 250 <br /> Surrogate a a a-Tr jhrorotoluene 100 --- 9 73 70 0 130 973 - - -- <br /> LCS 9120791-BSI <br /> Purgeable Hvdrocarbons _ __ 12/27/99 250 227 ug/I 70 0-130 90 8 <br /> Surrogate a a a-Trjluorotoluene 10 0 - — _ g 78 - — - 700-130 - 978 ---- - <br /> Batch 9120818 D ite Prep-ired 12/28/99 Extraction Method EPA 5030E1P/Tl <br /> Wk 9120818-BLK1 <br /> able Hydrocarbons 12128199 NO Ug/1 50 0 <br /> Sequoia Analytical-Morgan Hill 'Refer to end of report Jor text of notes and definitions <br /> Page 6 of 9 <br />