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' Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX (415) 364 9333 <br /> r'V404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sa6fatnento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> . . . � <br /> Pacific Environine'ntal Group MCllent Project ID 310-097ryiA/0123,Tracy <br /> 2025 Gateway Place, Suite 440 Matrix SOLID <br />' San Jose, CA 95110 F <br /> ;~Attention Maree Doden Work Order# 9505F62 17-30, 32-36 Reported Jun 7, 1995` <br /> v V r\MV 4ri1 ` v t 1 xy v v. }` •nxx rw J rv{.vr > 4 v x r^^' a+f q vV v z vhY �x <br />' QUALITY CONTROL DATA REPORT <br />' Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GCO52595BTEXEXB GCO52595BTEXEXB G0052595BTEXEXB GCO52595BTEXEXB <br /> Analy. Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br />' Prep. Method- EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst- S Mann S Mann S Mann S Mann <br /> MS/MSD #: 9505A4021 9505A4021 9505A4021 9505A4021 <br />' Sample Conc : N D N D N D N D <br /> Prepared Date- 5/25/95 5/25/95 5/25/95 5/25/95 <br /> Analyzed Date 5/25/95 5/25/95 5/25/95 5/25/95 <br /> Instrument I D # GCHP1 GCHP1 GCHP1 GCHP1 <br /> Conc Spiked- 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 60 mg/Kg <br /> Result- 017 017 017 051 <br /> MS %Recovery- 85 85 85 85 <br /> Dup Result 016 016 016 048 <br />' MSD %Recov 80 80 80 80 <br /> RPD 61 61 61 61 <br /> RPD Limit 0-50 0-50 0-50 a-50 <br />' LCS #. <br /> Prepared Date: <br /> Analyzed Date. <br />' Instrument I.D.#: <br /> Conc. Spiked: <br />' LCS Result <br /> LCS % Recov.. <br />' LCS <br /> Control Limits 55-145 47-149 47-155 56-140 <br /> IPlease Note <br /> The LCS is a control sample of known,Interferent-free matrix that is analyzed using the same reagents, <br /> UOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure if <br /> the re very of analytes from the matnx spike does not fall within specified control limits due to matrix <br /> E11 en A <br /> interference,the LCS recovery is to be used to validate the batch <br /> _ n <br /> Project Manager *i°MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9505F62 PPP <3> <br />