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it <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) a64.9600 FAX(415) 364-9133 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686-9600 FAX (510)6869689 <br /> leo Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX (916) 9210100 <br /> ............. <br /> -West Project ID: 1218.03 afeway Stockton <br /> X 455 Capitol Mall, 8th Fir Matrix: Water <br /> Sacramento, CA 95814 ii <br /> : <br /> Attention. Laurie Depies OC Sample Group: 5031193-1194 ReportedApr 12, 1995 <br /> X: <br /> . .......... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Diesel Acenaphthene Phenanthrene Pyrene <br /> Method: EPA 8015M EPA 8310 EPA 8310 EPA 8310 <br /> Analyst: C. Lee L Haar L Haar L.Haar <br /> Concentration jj <br /> 250 ug/L 100 ug/L <br /> 300 ug/1- 1000 ug/L <br /> Spiked: <br /> LCS Batch#: LC5040695 LC5032B95 LCS032895 LC5032895 <br /> Date Prepared: 4/6/85 3/28/95 3/28/95 3/28/95 <br /> Date Analyzed: 4/11/95' 3/29/95 3/29/95 3/29/95 <br /> Instrument I.D.#: GCHPr3B GCW 1 GCW 1 GCW1 <br /> LCS % l M <br /> Recovery: 971 <br /> 99 64 96 <br /> Control Limits: 60-130 50-150 50-150 50-150 <br /> �E <br /> MS/MSD <br /> Batch #: BLK040695 BLK032895 BLK032895 BLK032895 <br /> Date Prepared: 4/6/95 3/28/95 3/28/95 3/28/95 <br /> Date Analyzed: 4/11]95 3/29/95 3/29/95 3/29/95 <br /> Instrument I.D.#: GCHP-3B GCW I GCW I GCW 1 <br /> Matrix Spike <br /> %Recovery: 97 99 64 96 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 96 60 92 <br /> Relative % <br /> I. Difference: 3.0 3.1 6.5 4.3 <br /> Please Note: <br /> JThe 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 LCS%recovery data is used for <br /> validation of sample batch results. Due to matrix effects,the 00 limits for MS/MSD's are advisory only <br /> J11 and are not used to accept or reject batch results. <br /> Linda C. Schneider <br /> Project Manager <br /> 5031191ERS <5> <br />