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L <br /> r) <br /> Sequoia 690 Chesapeake Drive Rcd-ood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 404 N. Wiget Lane Walnut Creek.CA 944598 (510) 998-9600 FAx(510)988.9673 <br /> Analytical 819 Striker Avenue,Suite a Sacramento,CA 95834 (916) 911-96W FAX (916)921-0100 <br /> Terra Vac Co...rp. <br /> Client Project- <br /> [D.- Chevron *94054Sampled. Se r p 1 29-30, 97. <br /> 1651 Alvarado Street Sample Matrix: Soil <br /> San Leandro, CA 94577 Analysis Method: EPA 5030/8015 Mod. 8020 Received: Oct 1, 1997 <br /> Reported: Oct 17, 1997 <br /> Attention: Cliff Garrett First Sample #: 710-0064 <br /> CC Batch Number: ... <br /> SP100997 SP101697 SP101697 SP100997 SP101697 SP100997 1- <br /> 8020EXA FXA 8020EXA 8020EXA 8020EXA <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX 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 710-0064 710-0065 710-0066 710-0067 710-0068 710-0069 <br /> GP1-15.0 GP1-19.5 - GP1-23.5 - GP2-15-0 GP2-19.0 GP2-23-0 <br /> Purgeable <br /> Hydrocarbons 1.0 1.0 110 140 N.D. 400 130 <br /> Benzene 0.0050 0.030 2.7 0.79 N.D. 2.7 2.5 <br /> Toluene 0.0050 N.D. 2.4 1.3 N.D. N.D. 4.1 <br /> Ethyl Benzene 0.0050 0.0054 2.2 0.53 N.D. 3.1 2.5 <br /> Total Xylenes 0,0050 0.011 5.4 0.96 N.D. 20 12 <br /> MTBE 0.050 N.D. N.D. N.D. N.D. N.D. N.D. <br /> Chromatogram Pattern: Gasoline Gasoline Gasoline Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1.0 50 50 1.0 200 50 <br /> Date Analyzed: 10/9/97 10/16/97 10/16/97 10/9/97 10/16/97 10/9/97 <br /> Instrument identification: HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> Surrogate Recovery, %: 77 93 <br /> (OC Limits = 40-140%) <br /> Purgeabfe 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 /> Samples 710-0065,-O066&-0058 were initially analyzed within hold time on 10/9/97,but TPH <br /> tllv-Irue was outside of calibration range. <br /> Melissa A. Brewer <br /> Client Services Representative <br /> 7100064.TVC <1> <br />