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j SEQUOIA ANALYTICAL
<br /> 680 CA 94063
<br /> City,ke Dnve - Redwood
<br /> (415) 364-9600 FAX(415) 364-9233
<br /> Clien3 Prosect ID 15004701, Ekhdm Property
<br /> �1710 Main Street Matrvc Sal ��
<br /> �Escalon, CA 95320 r
<br /> r;Attentlon John Lane QC Sample Group 3�IB6201-4 A� Reported Oct 27, i 993 �_
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<br /> QUALITY CONTROL DATA REPORT
<br /> ANALYTE Ethyl_
<br /> Benzene Toluene Benzene X enes
<br /> Method: EPA 8020 EPA 8x20 EPA 8020 EPA 8020
<br /> Analyst: A Marald A.Marald A.Maralit A.Marei t
<br /> Conc. Spiked: 020 020 020 0 60
<br /> ' Units. mg/kg mg/kg mg/kg mg/kg
<br /> LCS Batch#: GBLK102293 GBLK102293 GBLK102293 GBLK102293
<br /> ' Date Prepared: 10/22/93 10/22/93 10/22/93 10/22/93
<br /> Date Analyzed: 10/22/93 10/22/93 10/22/93 10/22/93
<br /> Instrument I.D.#: GCHP-8 GCHP-6 GCHP-6 GCHP-6
<br /> LCS%
<br /> Recovery: 105 100 105 102
<br /> ' Control Limits: 60-140 60-140 60-140 60.140
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<br /> MS/MSD
<br /> Batch#: 3JA1307 3JA1307 3JA1307 3JA1307
<br /> Date Prepared: 10/22/93 10/22/93 10/22/93 10/22/93
<br /> Date Analyzed:_ 1o/22/93 10/22/93 10/22/93 10/22/93
<br /> Instrument I.D.#: GCHP-6 GCHP-6 GCHP-6 GCHP-6
<br /> ' Matrix Spike
<br /> %Recovery: 100 100 100 97
<br /> Matrix Spike
<br /> Duplicate%
<br /> Recovery: 105 los los 102
<br /> ' Relative% _
<br /> Difference: 49 49 49 so
<br /> SEQUOIA ANALYTICAL Please We
<br /> The LCS is a control sample of known,Interferent free matrix that is analyzed using the same reagents,
<br /> �h A� preparation and analytical methods employed for the samples The LCS%recovery data is used for
<br /> ' Y'l validation of sample hatch results Due to matnz effects,the 0C limits for MS/MSD's are advisory only
<br /> and are not used to accept or reject batch results
<br /> Vickie Tague
<br /> Project Manager 3JB6201 WAT <2>
<br />
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