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Sequoia 404 N WiLane <br /> Walnut Creek CA 94598 <br /> (925)988-9600 <br /> Analytical <br /> FAX(925) 988-9673 <br /> Roy P Weston Project San Joaquin HSA <br /> 2300 Clayton Road Project Number San Joaquin HSA Reported <br /> Concord CA, 94520 Project Manager Scott Lookitigbill 17-Dec-99 13 22 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source °/.REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lunit Notes <br /> IBatch 9K19001 Prepared 19-Nov-99 Using EPA 5030B [PIT] <br /> LCS(9K19001-BSI) <br /> Benzene 19 4 0 50 ugll 200 970 70-130 <br /> Toluene 196 050 200 980 70-130 <br /> Ethylbenzene 171 050 200 855 70-130 <br /> Xylenes(total) 61 0 050 600 102 70-130 <br /> Surrogate a a a-Tri luorotoluene 295 300 983 70-130 <br /> LC Dup (9K19001-BSD 1) <br /> Benzene 199 050 ug/1 200 995 70-130 254 20 <br /> Toluene 182 0 50 200 91 0 70-130 741 20 <br /> 0 ylbenzene 173 050 200 965 70-130 116 20 <br /> lenes(total) 623 050 600 104 70-130 2 11 20 <br /> Surrogate a a a-Trz luororoluene 285 300 95 0 70-130 <br /> Ple—qu�oiaa�lytic,adl�-Walnut Creek The results in this report apply to the samples cmalyzed i n accordance wash the chain of <br /> custody document This analytical report must he reproduced m i is entirety <br /> c <br /> JUVIIe eg ey, Project Manafer Page 6 of 7 <br />