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(580 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wig,t La.� Walnut Creek.CA 94598 (510)988-9600 FAX(510)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento.CA 95834 (916)921-9600 FAX(9[6)921-0100 <br /> Analytical 1455 McDowell Blvd.North,Ste,D Petaluma.CA 94954 (707)797-1865 FAX(707)792-034Z <br /> ....................... <br /> ................ <br /> ........... <br /> . .......... ... <br /> ............... --------- ...... <br /> ..:ATC Project I D: 15591, 62574.0002 <br /> :'.:1260 Graphics Drive Matrix: Liquid <br /> -1502 <br /> :.-.Modesto, CA 95351 <br /> Attention: Jeanne Homsey Work Order#: 9804196 -01, 02 Reported: Apr 27, 199S..." <br /> ...................................................................................................... ..... <br /> . ....................__....... ......................... <br /> ............ <br /> ........................... ........ <br /> .................. ............... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Diesel <br /> OC Batch#: GC0402980HBPEXC <br /> Analy. Method: EPA 8015M <br /> Prep. Method: EPAS510 <br /> Analyst: N. Herrera <br /> MS/MSD#: 980410103 <br /> Sample Conc.: 62000 <br /> Prepared Date: 4/2/98 <br /> Analyzed Date: 4/3/98 <br /> Instrument I.D.#: GCHP4 <br /> Conc. Spiked: 1000pg/L <br /> Result: 70000 <br /> MS % Recovery: 800 <br /> Dup. Result; 39000 <br /> MSD % Recov.: -2300 <br /> RPD: 57 <br /> RPD Limit: 0-50 <br /> ............ ................. ......................... .... <br /> .......... <br /> ..... ...... ... .. <br /> _­..................... ...... ........... ------- . .................... <br /> .�.......... .................... <br /> . .. .......... ....... <br /> .............. ... .... <br /> ............ . ..... .... .... .. .. <br /> . ......... ...... <br /> . ........... ....-—-----. .. ...... ...... <br /> ..... . ..... .... .................. ..................... <br /> LCS#: BLK040698 <br /> Prepared Date, 4/6/98 <br /> Analyzed Date: 4/6/98 <br /> Instrument LID.#: GCHP4 <br /> Conc. Spiked: 10OOpg/L <br /> LCS Result: 810 <br /> LCS % Recov.: 81 <br /> MS/IVISD 50-150 <br /> LCS 60-140 <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 /> :31EQUOIA ANALYTICAL 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. It <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 /> K h iimyaii <br /> Project Manager MS=Matrix Spike, MSD=MS Duplicate, APO=Relative%Difference 9804196.AAA <1> <br />