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IASt5) <br /> Sequoia 680 Chesapeake Dnve Redwood Cary CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Surto L Concord f.A 94520 (510) 686 9600 FAX(510)686 9689 <br /> g11r Analytical 819 Sinker Avenue Suite 8 Sacramento Ca 95834 (916) 921 9600 FAX(916)921 0100 <br /> .,+c"afucru'' :xa3:s3`o�,:r ..':y` 's"x;< ` <br /> Groundwater Technology Client Project ID Chevron #9-8632,`Tracy, CA <br /> 1401 Halyard Drive, Suite 140 Matra Soil <br /> West Sacramento, CA 95691 <br /> Attention .lason Fedota OC Sample Group 505-0542 Reported May 24, 1995 <br /> {»�a,.S?.tZw'vii�uwa,»�3rS4,w5uS�xCt���,a��sL �a�awv�.saY,� ��� ns,s tu,a�o�`v 5�•i 4.a..,r'xsb'���tn.�a+in"�`�.o� �o�t+`z .4�^S2'�het <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Diesel 0118 Grease <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M SM 5520 CF <br /> Analyst C Chapman C Chapman C Chapman C Chapman C Lee S Phillips <br /> Concentration <br /> Spiked 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg 7 5 mg/kg 100 mg/kg <br /> LCS Batch#. LCS052395 LCS052395 LCS052395 LCS052395 LCSD51895 LCS051195 <br /> Date Prepared. 5/23/95 5/23/95 5/23/95 5/23/95 5/18/95 5/11/95 <br /> Date Analyzed 5/23/95 5/23/95 5/23/95 5/23/95 5/18/95 5/12/95 <br /> Instrument l.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-38 IR-1 <br /> LCS % <br /> Recovery 89 86 92 92 95 88 <br /> Control Limits 75-125 75-125 75-125 75-125 60-130 80-120 <br /> MS/MSD <br /> Batch # 5050747 5050747 5050747 5050747 5050915 BS051195 <br /> Date Prepared 5/23/95 5/23/95 5/23/95 5/23/95 5/18/95 5/11/95 <br /> Date Analyzed 5/23/95 5/23/95 5/23/95 5/23/95 5/19/95 5/12/95 <br /> Instrument I D # GCHP-1 GCHP-1 GCHP 1 GCHP-1 GCHP 3B IR-1 <br /> Matrix Spike <br /> % Recovery 85 86 88 90 102 88 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 90 89 90 92 93 88 <br /> Relative % <br /> Difference 5 7 34 22 2 2 9 2 00 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> preparation and analytical methods employed tot the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects the OC limits for MS/MSDs are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results <br /> Project Manager <br /> 5050542 GRW <4 i <br /> 'TJ <br />