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equola 680 Chesapeake Drive Redwood City,CA 94063 JTF5Y 4- 600 FAX(415) 364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 %00 FAX(510)988-9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 92t %00 FAX(916)921-0100 <br /> r` ry ry r r rr rnvY n <br /> Onviros- <br /> Client Project ID' XShell 6131 Pacific, Stockton v <br /> }x270 Perkins Ave Matrix Solid h <br /> Sonoma, CA 95476 <br /> q Attention .toe Neely Work Order# A 9707310 -01-04, 06-15 Reported Jul 21, 1997 <br /> r F <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> (2C Batch# GC071197BTEXEKA GCO71197BTEXEXA GC0711978TEXEXA GCO71197BTEXEXA GCO71197BTEXEXA <br /> Analy. Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep Method- EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J Heider J Heider J Heider J Heider J Heider <br /> MS/MSD #- 970731001 970731001 970731001 970731001 970731001 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date: 7/11/97 7/11/97 7/11/97 7/11/97 7/11/97 <br /> Analyzed Date 7/11/97 7/11/97 7/11/97 7/11/97 7/11/97 <br /> Instrument 11.10 # GCHP7 GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc. Spiked- 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 60 mg/Kg 1 2 mg/Kg <br /> Result 014 0 14 0 15 044 1 0 <br /> MS % Recovery- 70 70 75 73 83 <br /> Dup Result. 016 0 17 0 17 050 12 <br /> MSD %Recov : 80 85 85 83 100 <br /> RPD. 13 19 13 13 18 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS # ELK071197 BLK071197 BLK071197 ELK071197 BLK071197 <br /> Prepared Date: 7/11/97 7/11/97 7/11/97 7/11/97 7/11/97 <br /> Analyzed Date- 7/11/97 7/11/97 7/11/97 7/11/97 7/11/97 <br /> Instrument 1 D # GCHP7 GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc. Spiked: 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 60 mg/Kg 12 mg/K9 <br /> LCS Result 017 0 17 0 17 0 50 12 <br /> LCS %Recov .. 85 85 85 83 100 <br /> A <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS r 70-130 70-130 70-130 70-130 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 /> VUOLYTICAL 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 recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Project Manager * MS=Matrix Spike MSD=MS Duplicate,RPD=Relative% Difference 9707310 EEE <1> <br /> P` <br />