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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> %07 Analytieai 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> 0, <br /> Apex Envirotech Client Project ID Moore Petroleum <br /> 7844 Madison Ave, Suite 106 Matrix Water <br /> Fair Oaks, CA 95628 <br /> Attention Jeff Rothgery OC Sample Group 702-0546 Reported Mar 4, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 1,1-Dlchloro- Tnchloro Chloro- <br /> ethane ethene benzene <br /> Method EPA 601 EPA 601 EPA 601 <br /> Analyst K Pocan K Pocan K Pocan <br /> Concentration <br /> Spiked 10 ug/L 10 ug/L 10 ug/L <br /> LCS Batch# LCS022697 LCS022697 LCS022697 <br /> Date Prepared 02/26/97 02/26/97 02/26/97 <br /> Date Analyzed 02/26/97 02/26/97 02/26/97 <br /> Instrument I D # GC-5 GC-5 GC-5 <br /> . LCS <br /> Recovery 105 98 93 <br /> Control Limits 65-135 70-130 70-130 <br /> MS/MSD <br /> Batch # 7020458 7020458 7020458 <br /> Date Prepared 02/26/97 02/26/97 02/26/97 <br /> Date Analyzed 02/26/97 02/26/97 02/26/97 <br /> Instrument l D # GC-5 GC-5 GC-5 <br /> Matrix Spike <br /> % Recovery 138 124 115 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 147 132 122 <br /> Relative% <br /> Difference 62 63 59 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that 1s analyzed using the same reagents, <br /> OUOIA ANALYTICAL preparation and analytical methods employed for the samples The LCS%recovery data 1s used for <br /> validation of sample batch results Due to matrix effects,the QC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results <br /> Edana M Belschner <br /> Project Manager/Sacramento Laboratory <br /> 7020546APE <2> <br />