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Y <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415)364.9233 <br /> 404 N.Wiget Lane Walnut Cretk,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> .Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921-0100 <br /> Terra Vac.Cor .. <br /> P Client Project ID Chevron'#9-4054 .. <br /> 1651 Alvarado Street Sampled "�Sep 29 30, 97, <br /> Sample Matrix: Soil Received. Oct 1, 1997 <br /> San Leandro, CA 94577 Analysis Method: EPA 5030/8015 Mod-/8020 Reported: Oct 17, 1997' <br /> Attention Cliff Garrett First Sample #: 710-0076 <br /> QC Batch Number: SP101097 SP101097 SP101097 SPIC1097 SP101097 SP101697 <br /> eBI $0 <br /> 20TOTAL PURGEABLE PETROLEUM HYDROCARBONwithTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. 1.D. 1.D. 1.D. I.D. <br /> I.D. <br /> mg/kg 710-0076 710-0077 710-0078 710-0079 710-0080 710-0081 <br /> GP7-19.0 " GP7-23.0 * GP7-27.0 GP9-15.0 GP9-19.0 * GP9-23.0 " <br /> Purgeable <br /> Hydrocarbons 1.0 1,300 380 1.8 4.0 490 2,200 <br /> Benzene 0.0050 6.4 0.81 0.10 0.028 5.2 18 <br /> I <br /> Toluene 0.0050 6.1 4.0 0.034 0.013 1.0 4.1 <br /> Ethyl Benzene 0.0050 18 5.1 0.048 0,064 9.4 31 <br /> Total Xylenes 0.0050 57 31 0.10 0.52 19 210 j <br /> i MTBE 0.050 12 N.D. N.D. 0.18 N.D. N.D. J <br /> i <br /> Chromatogram Pattern: Gasoline Gasoline Gasoline Gasoline Gasoline Gasoline <br /> Quality Control Data <br /> ReportLimit Multiplication Factor: 50 100 1.0 1.0 100 200 <br /> I Date Analyzed: 10/10/97 10/10/97 � <br /> 10/10/97 10/10/97 10/10/97 10/16/97 <br /> Instrument Identification: HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> ISurrogate Recovery, %: 159 - <br /> (QC Limits = 40-140%) 89 93 393 <br /> 1 <br /> I, <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard. <br /> Analytes reported as N.D.were not detected above the stated reporting limit. <br /> SEQUOIA ANALYTICAL, #1271 Please Note: <br /> *Surrogate recoveries were below detection limit due to sample dilution. <br /> Q , - Surrogate recoveries were outside of the upper control limit due to peak coelution. PPP <br /> Sample 710-0081was initially analyzed within hold time on 10/10/97,but TPH value was <br /> Melissa A. Brewer outside of calibration range. <br /> Client Services Representative <br /> 7100064.NC <3> ' <br /> r I <br />