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j SEQUOIA ANALYTICAL
<br /> 680 Chesapeake Drive a Redwood City, CA 94063
<br />;I (415) 364-9600 FAX (415) 364-9233 h
<br /> :RESNA Client Project ID: W4801, PG&E, Stockton Service Center::
<br /> :1710 Main Street Matrbc: Soil
<br /> Escalon, CA 95320 = `
<br /> Attention: Lois Frantz QC Sample Group: 3C42201 I Re rted: Mar 1 i 1
<br /> Po 993
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<br /> QUALITY CONTROL DATA REPORT
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<br /> ANALYTE Total Extractable E
<br /> Petroleum
<br /> Hydrocarbons
<br /> Method: EPA 8015
<br /> Analyst: C.Lee
<br /> Concentration
<br /> Spiked: 1s
<br /> 4
<br /> LCS Batch#: D&Kwiows5
<br /> Date Prepared: 3/10/93
<br /> Date Analyzed 3/10/93
<br /> Instrument I.D.#: GCHP-4 INJ.A p
<br /> LCS %
<br /> Recovery: 80
<br /> Control Limits: 50-150
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<br /> MS/MSD
<br /> Batch#: D9303-330-01 i
<br /> Date Prepared: 3/9/93
<br /> Date Analyzed 3/9/93 i
<br /> Instrument I.D.#: GCHP-5 INJ.B i
<br /> Matrix Spike "
<br /> % Recovery: 16
<br /> Matrix Spike
<br /> Duplicate%
<br /> Recovery: 6.7
<br /> Relative%
<br /> Difference: 29
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<br /> Please Note: l
<br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, k
<br /> SEQUOIA ANALYTICAL preparation and analytical methods employed for the samples. The LCS%recovery data is used for
<br /> vauidation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only
<br /> and are not used to accept or reject batch results.
<br /> �nrie I
<br /> roject Manager 3C42201.WAT <3>
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