Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 Irl Wtget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite F Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> I <br /> I <br /> I <br /> Ground Zero Analysis, Inc Client Project ID 95-163 Knowles Roek <br /> 1714 Main Street Matrix Liquid <br /> E Escalon, CA 95320 <br /> Attention Justin Powers Work Order # 9803929-02 Reported Apr 1, 1998 <br /> I <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GCO32098BTEX02A GC032098BTEX02A GC032098BTEX02A GCO32098BTEX02A GC032098BTEX02A <br /> Analy Method EPA 8020 EPA 8020 EPA 3020 EPA 8020 EPA 8015M <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> I <br /> Analyst C DeMartinl C DeMartmi C DelAartini C DeMartlni C DeMartinl <br /> MS/MSD # 980358002 980358002 980358002 980358002 980356002 <br /> Sample Cone N D N D N D ND N D <br /> Prepared Date 3/20/98 3/20/98 3/20/98 3/20/98 3/20/98 <br /> Analyzed Date 3/20/98 3/20/98 3/20/98 3/20/98 3/20/98 <br /> Instrument I D # GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone Spiked 10 pg/L 10 pg IL 1019/L 30 pg/L 60 us/L <br /> Result 10 11 11 34 68 <br /> MS % Recovery 100 110 1 0 113 113 <br /> Dup Result ac 81 90 26 54 <br /> MSD %Recov 80 81 90 87 90 <br /> RPD 22 30 20 27 23 <br /> RPD Limit 025 0 25 0 25 025 025 <br /> LCS # BLK032098 BLK032098 BLK032098 BLK032098 BLK032098 <br /> Prepared Date 3/20/98 3/20/98 3/20/98 3/20/98 3/20/98 <br /> Analyzed Date 3/20/98 3/20/98 3/20/98 3/20/98 3/20/98 <br /> Instrument l D # GCHP2 GCHP2 GC-fP2 GCHP2 GCHP2 <br /> Cone Spiked 10pg/L 10pg/L 10pg/L 30pg/L 60p9/L <br /> LCS Result 913 10 11 33 64 <br /> LCS % Recov 98 100 110 110 107 <br /> 60-140 60 140 60140 60-140 60140 <br /> LCS 70-130 70130 70130 70130 70-130 <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 /> SE A AL ICAL preparation and analytical methods employed for the samples The matrix spike Is an aliquot of sample <br /> fortified with known quantities if specific compounds and subjected to the entire analytical procedure It <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> mterfefence the LCS recovery Is to be used to validate the batch <br /> Pe y P r <br /> Pro, ct nager **MS=Matrix Spike MSD=MS Duplicate RPD=Relative% Difference 9803929 GGG <2> <br />