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I Sequoia680 Chesapeake Drive Redwood City,CA 94063 (415) 364.9600 FAX (415) 364-9233 <br /> 404 N. W'tget Lane Walnut Creek,CA 94598 (530) 988.9600 FAX(510)988.9673 <br /> t <br /> Analytiea 819 Striker Avenue,Suite a Sacramento,C4 95834 (916) 911.9600 FAX(916)921.0100 <br /> t � <br /> Terra Vac�Co� >:.: -. - ..:. �: .,: -.: <br /> P• Client Project ID Chevron #9-4054 <br /> l Sampled. Sep 29'-30, 97 <br /> 1651 Alvarado Street <br /> Sample Matrix: Soil Received: Oct 1, 1997 <br /> San Leandro, CA 94577 Analysis Method: EPA 5030/8015 Mod. 8020 <br /> Attention Cliff Garrett First Sample #: 710-0070 Mod-/8020 Oct 17, 1997. <br /> QC Batch Number: SP101097 SP101097 SP101697 SP101697 SP101397 SP101397 <br /> $ I8020ExaTOTAL PURGEABLE PETROLEUM HYEXA DROCARBONwith BTX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I.D. I.D. I.D. I.D. <br /> mg/kg 710-0070 710-0071 710-072 710-0073 710-0074 710-0075 <br /> GP3-15.0 ' GP3-19.25 GP3-23.0 " GP5-17.2 " GPS-23.0 * GP5-27.0 <br /> Purgeable <br /> Hydrocarbons 1.0 150 8.5 1,500 1,200 34 4.1 <br /> Benzene 0.0050 2.0 0.77 15 14 2.0 0.25 <br /> Toluene 0.0050 0.73 0.040 3.1 18 1.2 0.030 <br /> Ethyl Benzene 0.0050 3.8 0.21 26 20 0.92 0.040 <br /> i <br /> Total Xylenes 0.0050 2.0 0.035 92 110 3.3 0.077 <br /> MTBE 0.050 N.D. 0.11 18 - N.D. N.D. N.D. <br /> Chromatogram Pattern. Gasoline Gasoline Gasoline Gasoline Gasoline <br /> Gasoline <br /> Quality Control Data <br /> I <br /> Report Limit Multiplication Factor: 50 1.0 200 100 20 1.0 <br /> Date Analyzed: 10/10/97 10/10/97 10/16/97 10 16 97 10/13/97 <br /> 10/13/97 <br /> / / <br /> i <br /> Instrument Identification: HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> Surrogate Recovery, %: <br /> 9 ry, 383 74 567 . 243 37 59 <br /> (OC Limits = 40-140%) <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 recovery was below detection limit due to sample dilution. <br /> Q "Surrogate recoveries were outside of the upper control limit due to peak coelution. <br /> I ampler 710-0072&-073 were initially analyzed within hold time on 10/10/97,but TPH value was <br /> i Melissa A. Brewer outside of calibration range. <br /> Client Services Representative <br /> 710064,TVC <2> <br />