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• �� �� iti•�a �c�auvin n7ltiLT 314HL P.8 <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415) 364-9600 • FAX I(415)364-9233 <br /> fam,� -...... <br /> Client Project 10: <br /> 7� 15005201, Hull i`ic CO. � <br /> 10 Main Street Matroc son <br /> Esc:alon, CA.95320 <br /> �� tlart: Tom Lf�tterrnan � OC Sarrtple Grow :3.!70801-10 t9, '1993 <br /> QUALITY CONTROL DATA REPORT <br /> BeMlk Csdrniurn Chromium hiidrel <br /> Method: EPA 6010 ?EPA 6010 EPA 8010 EPA 6010 <br /> Armlyst: G Madefeaaer C.'Madetesssr G Mwde%saer C.Medetesaor <br /> Code. Spiked: 100 too too 100 <br /> Units: mg/ks m9/kg MG/kg m9/k8 <br /> LCS Batch#: 8LK101M 8LK101893 - S K1o1893 BLK101823 <br /> Date Prepared: 10/18M 10/1e/93 110/110/93 <br /> Date Analyzed: 10/19/93 10/19/93 10/19/93 10/19/93 <br /> instrment l.D.#: MTJ1-2 'MTJA-2 MT.A2 MTJA-2 <br /> LCS% <br /> Recovery:. 105 106 102 <br /> Control Limits: 75-125 7125 75-125 .75.125 <br /> MS/MSD <br /> Batch#: 37=t 3!70901 370801 3J708 <br /> 01 <br /> Date Prepared: 10/18/93 i'0118/M 10/18/93 10/18/93 <br /> Date Analyzed: 10/19/93 110/14/93 10/19/93 10/19/93 <br /> Instrument 1-D.#: MTJA,2 MTJA• 2 M7'JA-2 MTJA-2 <br /> Matrix Spike <br /> %Recovery: 100 100 102 100 <br /> Mabix Spike <br /> Duplicate% <br /> Recovery. 977 98 106 92 <br /> Relative% <br /> Difference: 30 4.1 6.1 8.3 <br /> r ph"0e Now. <br /> SEQUOIA ANALYTICAL The LCS is a control sample of known,interferent free matrix that is analyzed using the aame fsarem <br /> preparatfor*and analytical n wtfiods empbyrd for the awToas. Tne LCS%recovery dose Is usea for <br /> raaDon or sample Dain results, Due to matrix effects,the QC limits for MSJMSCk are advisory only <br /> and are not need to accept- reject batch results. <br /> Vickie Tague <br /> Project Manager 3i7+a INAT <7> <br />