Laserfiche WebLink
i <br /> ` <br /> cz_ <br /> Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX(415)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9,673 <br /> qAnalytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> EMCON Client Project ID ARCO?2130, Stockton, CA <br /> 1433 N Market Blvd Matrix Water <br /> Sacramento CA 95834 <br /> Attention Claudio Avila QC Sample Group 7080787-0798 Reported Sep 4, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene X lenes <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst S Phillips S Phillips S Phillips S Phillips <br /> Concentration <br /> Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Batch# LCS082897 LCS082897 LCS082897 LCS082897 <br /> Date Prepared 08/28/97 08/28/97 08/28/97 08/28/97 <br /> Date Analyzed 08/28/97 08/28/97 08/28/97 08/28/97 <br /> Instrument I D # GCHP-7 GCHP-7 GCHP-7 GCHP-7 <br /> LCS <br /> Recovery 97 93 92 91 <br /> Control Limits 70-130 70-130 70-130 70-130 <br /> MS/MSD <br /> Batch # 7081056 7081056 7081056 7081056 <br /> Date Prepared 08/28/97 08/28/97 08/28/97 08/28/97 <br /> Date Analyzed: 08/28/97 08/28/97 08/28/97 08/28/97 <br /> Instrument I D # GCHP-7 GCHP-7 GCHP-7 GCHP-7 <br /> Matrix Spike <br /> % Recovery 97 87 89 89 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 98 93 93 93 <br /> Relative % <br /> Difference 1 0 67 44 44 <br /> SEQUOIA ANALYTICAL Please Note <br /> c The LCB is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects the QC limits for MS/MSDs are advisory only <br /> Linda C Schneider and are not used to accept or refect batch results <br /> Prolect Manager/Sacramento Labora ory <br /> 7080787 EMC <6> <br /> g� <br />