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Sequoia 404 N WiLane <br /> Walrtut Creek CAA 94598 <br /> ,!T� Analytical FAX(925) 988 9600 <br /> (925)988-9573 <br /> 72300CIayton <br /> ton Project San Joaquin HSA <br /> Rodd Project Number San Joaquin HSA Reported <br /> Concord CA,94520 Project Manager ScottLookuigbill 17-Dec-99 13 22 <br /> ITotal Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Repartmg Spike Source %REC RPD <br /> Analyte Result Lunt Units Leel Result °/aREC Lumis RPD Larut Notes <br /> Batch 9KIS002 Prepared 18-Nov-99 Using EPA 5030B [PIT] <br /> Blank(9K18002-BLKI) <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 0 50 <br /> Toluene ND 0 50 <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a a a-rrri luorotoluene 307 300 102 70-130 <br /> LCS(9K18002-BSI) <br /> Bervene 220 0 50 ug/l 200 110 70-130 <br /> TolULne 222 050 200 111 70-130 <br /> 0 ylbenzenc 19 6 0 50 200 98 0 70-130 <br /> lenes(total) 685 0 50 600 114 70-130 <br /> Surrogate a a a-Trai luorotoluene 288 300 960 70-130 <br /> LCS Dup (9KI8002-BSD1) <br /> Benzene 22 0 050 ugfl 200 110 70-i30 0 20 <br /> 1 oiuene 221 0 50 200 111 70-130 0 451 20 <br /> Rhylbenzene 22 6 050 200 113 70-130 142 20 <br /> Xylenes(total) 68 7 050 600 114 70-130 0 292 20 <br /> Surrogate a a a-Tnfluorotoluene 310 300 103 70-130 <br /> Batch 9K39001 Prepared 19-Nov-99 Using EPA 5030B [P/T1 <br /> i <br /> Blank(9K19001-BLKI) <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 0 50 <br /> Toluene ND 0 50 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a a a-Tnfluorotoluene 32 0 300 107 70-130 <br /> Pcquoia Analytical-Walnut Creek The results in this report apply to thesamples analyzed in accordance with the chain of <br /> custody document This analyncal report must be reproduced in r is entirety <br /> c <br /> u <br /> Jtt ne Ag ey, Project anag Page 5 of 7 <br />