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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord,California 94520 <br /> I 11I (510) 686-9600 FAX (510) 686-9689 <br /> »:::am edFeb8 1....94 <br /> ��� Sampled: 99 .. <br /> >::>:::>t:»:Trac >::> <br /> ::::>:::.»�E��11th S <br /> ( >::<:>::>:::>::::>:::::�::::<:<:<»::::>::>:::<::>;::>_:<:»>::>::>::>::>::>::>:::<:>::>::>:<:>::>:> li of�Pro'�ect�ID: Unocal 0788 8203 <br /> MPDS Services, Inc. C e i y p <br /> 2401 Stanwell Dr., Ste. 400 Sample Matrix: Water Received:, Feb 18, 1994;:::: <br /> Concord, CA 94520 Analysis Method: EPA 5030/8015/8020 Reported: Mar 7, 1994:``: <br /> Attention: Avo Avedissian First Sample#: 402-1110 <br /> r 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. I.D. <br /> pg/L 402-1110 402-111.1 402-1112 402-1113 402-1114 402-1115 <br /> U1 U2 U3 U4 U5 U6 <br /> Purgeable <br /> Hydrocarbons 50 N.D. N.D. N.D. N.D. 91 120 <br /> r <br /> Benzene. 0.5 N.D. N.D. N.D. N.D. 3.3'' 1.3 <br /> Toluene 0.5 N.D. N.D. N.D. N.D. 0.57 N.D. <br /> i <br /> 3 Ethyl Benzene 0.5 N.D. N.D. N.D. N.D. 0.63 1.8 <br /> r <br /> Total Xylenes 0.5 N.D. N.D. N.D. N.D. 2.0. 3.6 <br /> Chromatogram Pattern: Gasoline Gasoline <br /> i. Id .. <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1.0 1.0. 1.0 .,1.0 1.0 1.0 <br /> Date Analyzed: 2/28/94 2/28/94 2/28/94 3/1/94 2/28/94 2/28/94 <br /> r Instrument Identification: ML#2 ML#2 ML#2 HP-4 ML#2 ML#2 <br /> Surrogate Recovery, %: 93 110 87 , 98 90 90 <br /> (QC Limits = 70-130%) <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 /> t SEQUOIA ANALYTICAL <br /> A <br /> Project Man ger <br /> 4021110.MPD <1> <br /> 3 <br />