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4i) Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX (510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> RESNA u' Client Project ID 150081 01 Gardner Property <br /> ,'1710 Main Street Matrix LIQUID <br /> Escalon, CA 95320 <br /> ' Attention Tom Lutterman Work Order# 9412G60-02, 03 Reported Jan 10, 1995 r <br /> QUALITY CONTROL DATA REPORT <br /> Analyte' Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#. GC0102958TEX2oA GC010295121TEX20A G0010295BTEX20A G00102958TEX20A <br /> Anally. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method- N/A N/A N/A N/A <br /> Analyst J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD# 941262704 941262704 9412132704 9412G2704 <br /> Sample Conc: N D N D N D N D <br /> Prepared Date N/A N/A N/A N/A <br /> Analyzed Date 1/2/95 1/2/95 1/2/95 1/2/95 <br /> Instrument I D.# GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc Spiked 10ug/L 10ug/L 10ug/L 30ug/L <br /> Result 99 99 10 30 <br /> MS %Recovery: 99 99 100 100 <br /> Dup Result- 10 10 10 30 <br /> MSD%Recov- 100 100 100 100 <br /> RPD 10 10 00 00 <br /> RPD Limit- 0-50 0-50 0-50 0-50 <br /> S sv { n > } r V r r 4 G <br /> LCS #: <br /> Prepared Date- <br /> Analyzed Date- <br /> Instrument I.D.#: <br /> Conc. Spiked: _ <br /> LCS Result. <br /> LCS %Recov : - _ <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br /> The LCS Is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sample <br /> r fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> Hit <br /> l-�l.L WL—� the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> (, interference,the LC3 recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager '•MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9412G60 WAT <27 <br /> �n <br />